angleton better living corporation

CITY OF ANGLETON, TEXAS ANGLETON BETTER LIVING CORPORATION Meeting @ 5:30 p.m., Monday, March 27, 2017

Located at 120 S. Chenango in the Council Chambers, Angleton, Texas 77515

1.) Declaration of Quorum and Call to Order.

2.) Discussion and Possible Action on approving the January 9, 2017 meeting minutes.

3.) Update and Discussion on the Angleton Recreation Center Natatorium Renovations.

4.) Discussion and Possible Action on the Angleton Recreation Center HVAC Specifications.

5.) Adjourn.

In compliance with the Americans with Disabilities Act, the City of Angleton will provide reasonable accommodations for persons attending Angleton Better Living Corporation Meetings. To better serve you, requests should be received 24 hours prior to the meeting. Please contact Shelly Deisher, City Secretary, at 979-849-4364, extension 2115.

CERTIFICATION

I certify that copies of this agenda of items to be considered by the Angleton Better Living Corporation were posted in the following locations:

City Hall Bulletin Board: Date: _______________ Time: _________

City of Angleton Website: Date: ______________ Time: _________

___________________ Alyssa Deaton, Assistant City Secretary

1

Angleton Better Living Corporation Meeting

City of Angleton, Texas

Meeting Minutes Monday, January 9, 2017

MEMBERS & STAFF

Randy Rhyne – Chairman George Rau – Board Member (Absent) Chris Peltier – Board Member (Absent) Bonnie Church – Board Member Dr. William Jackson – Board Member Charlyn Rogers – Board Member Hardwick Bieri – Board Member Susie Hernandez – Finance Director Will Blackstock – Parks & Recreation Director Alyssa Deaton – Assistant City Secretary

AGENDA

1. Declaration of Quorum and Call to Order at 5:34 pm.

2. Discussion and Possible Action on approving the November 8, 2016 meeting minutes.

Motion by Bonnie Church to approve the minutes; Second by Charlyn Rogers. Motion carries 5 for; 0 against; 2 absent (Peltier, Rau)

3. Discussion and Possible Action on the 2017 holiday closure calendar for the Angleton Recreation Center. Will Blackstock, Parks & Rec Director, explained the calendar to the Board Members and stated that the Rec Center will be open 360 out of 365 days in 2017. Motion by Charlyn Rogers to approve the calendar as presented; Second by Dr. William Jackson. Motion carries 5 for; 0 against; 2 absent (Peltier, Rau)

4. Discussion and Possible Action on awarding a bid for the Angleton

2

Recreation Center Natatorium renovations. Will Blackstock goes over both bids with Board Members and explained why he is recommending Progressive over the other company, Fromberg. Charlyn Rogers asks if the City will be going into debt to cover the cost of the projects. Will Blackstock and Susie Hernandez, Finance Director, explain that ABLC is transferring funds to help cover the cost and the remaining amount will be in the bond issuance that the City is doing in the Summer of 2017. Motion by Bonnie Church to award the bid to Progressive; Second by Charlyn Rogers. Motion carries 5 for; 0 against; 2 absent (Peltier, Rau)

5. Adjourned at 5:51 pm.

CERTIFICATION

Randy Rhyne, ABLC Chairman Alyssa Deaton, Asst. City Secretary

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ABLC AGENDA ITEM

Meeting Date: March 27, 2017

SUBJECT: Update and discussion on Angleton Recreation Center Natatorium Renovations

___ Consent item _x Discussion item _ _ Discussion and possible action ___ Public Hearing

REQUESTED BY: Will Blackstock, Parks & Recreation Director

Attachments: Will provide latest project pictures at meeting

Executive Summary: The renovations of the Angleton Recreation Center natatorium are progressing nicely. The slide and play features are painted and mostly reassembled. The ceiling painting is nearly complete. Remaining items include electrical, lighting and plaster.

Recommendation:

Will Blackstock March 20, 2017 __________________ ______________ Name Date

4

ABLC AGENDA ITEM

Meeting Date: March 27, 2017

SUBJECT: Discussion and Possible Action on approval of the Angleton Recreation Center HVAC Specifications.

___ Consent item _ _ Discussion item _x _ Discussion and possible action ___ Public Hearing

REQUESTED BY: Will Blackstock, Parks & Recreation Director

Attachments: HVAC Specifications from CAI Engineers

Executive Summary: CAI Engineers has finished creating specifications for the Angleton Recreation Center HVAC replacement. The specifications allow for options to replace units with different brands and/or unit footprints. This will allow for more competitive bidding by including structural recommendations that would allow us to replace the units with one of a different size and/or weight.

Recommendation: Staff recommends the specifications be approved and to move forward with the competitive bidding process.

Will Blackstock March 20, 2017 __________________ ______________ Name Date

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SPECIFICATIONS FOR:

ANGEL TON RECREATION CENTER HV AC REPLACEMENT CITY OF ANGLETON

Will Blackstock Parks and Recreation Director

Angleton Recreation

1601 N. Valderas Angleton, Texas 77515

Documents Dated: February 27, 2017

Documents Prepared By:

CAI Engineers

10700 Richmond Ave., Suite 145 Houston, Texas 77042

Phone No.: (713) 785-0334 Contact Person: Sam Jabori, P.E.

Email: [email protected]

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Angleton Recreation Center HV AC Replacement


Number Title

TABLE OF CONTENTS

DIVISION 23 - MECHANICAL

23 05 00

23 05 13

23 05 23 23 05 29

23 05 48

23 05 93

23 07 00

23 09 00

23 11 23

23 31 13

23 33 00

23 34 00

23 41 00

23 81 03

Common Work Results for Mechanical

Common Motor Requirements for HV AC Equipment

General-Duty Valves for HVAC Piping

Hangers and Supports for HV AC Piping and Equipment

Vibration and Seismic Controls for HV AC Piping and Equipment

Testing, Adjusting, and Balancing for HV AC

Mechanical Insulation

Instrumentation and Control for HV AC

Facility Natural-Gas Piping

Metal Ducts

Air Duct Accessories

HVAC Fans

Particulate Air Filtration

Packaged Rooftop Air Conditioning Units -Non-Custom

DIVISION 26 - ELECTRICAL

26 05 00

26 05 19

26 05 26

26 05 33

26 05 53

26 27 26

26 28 16

Common Work Results for Electrical

Low-Voltage Electrical Power Conductors and Cables

Grounding and Bonding for Electrical Systems

Raceway and Boxes for Electrical Systems

Identification for Electrical Systems

Wiring Devices Enclosed Switches and Circuit Breakers

END OF TABLE OF CONTENTS

TABLE OF CONTENTS

February 27, 201 7

TOC -1

7

23 05 00

COMMON WORK RESULTS FOR MECHANICAL

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Angleton Recreation Center HV AC Replacement City of Angleton, Texas

February 27, 2107

SECTION 23 05 00 - COMMON WORK RES UL TS FOR MECHANICAL

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following basic mechanical materials and methods to complement other

Division 23 Sections.

1. Piping materials and installation instructions common to most piping systems.

2. Concrete base construction requirements.

3. Escutcheons.

4. Dielectric fittings.

5. Flexible connectors.

6. Mechanical sleeve seals.

7. Equipment nameplate data requirements.

8. Labeling and identifying mechanical systems and equipment.

9. Nonshrink grout for equipment installations.

10. Field-fabricated metal equipment supports.

11. Installation requirements common to equipment specification sections.

12. Cutting and patching.

13. Touchup painting and finishing.

14. Provide the following electrical work as work of Division 23, complying with the electrical

requirements of Division 26 Sections:

a. Control wiring between field-installed controls, indicating devices and equipment.

Control wiring, as used in this specification, is defined as wiring that functions to

connect controls or indicating devices specified in Division 23 with equipment specified

in Division 23 or Division 26 and is not power supply wiring.

b. Interlock wiring between field-installed equipment, except where specified as factory

installed. Interlock wiring, as used in this specification, is defined as that wiring

between electrically-interlocked equipment for the purpose of controlling one piece or

pieces of equipment by the operation ( on, off, etc.) of another piece or pieces of

associated equipment.

1.2 REFERENCES

A. Applicable Standards:

1. American Society for Testing and Materials (ASTM):

a. A47 - Ferritic Malleable Iron Castings.

b. A53 - Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless.

c. A126 - Gray Iron Castings for Valves, Flanges, and Pipe Fittings.

d. A536 - Ductile Iron Castings.

e. B32 - Solder Metal.

f. Cl 107 - Packaged Dry, Hydraulic-Cement Grout (Nonshrink).

g. D709 - Laminated Thermosetting Materials.

2. American Society of Mechanical Engineers (ASME):

a. A13.l - Scheme for the Identification of Piping Systems.

b. B 1.20.1 - Pipe Threads, General Purpose (Inch).

c. B 16.21 - Nonmetallic Flat Gaskets for Pipe Flanges.

COMMON WORK RESULTS FOR MECHANICAL 23 05 00 - 1

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City of Angleton, Texas February 27, 2107

d. B 18.2.1 - Square and Hex Bolts and Screws - Inch Series.

3. American Water Works Association (AWWA):

a. Cl 10 - Ductile-Iron and Gray-Iron Fittings, 3 In. through 48 In., for Water and Other

Liquids.

b. Cl 11 - Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.

4. American Welding Society (AWS):

a. A5.8 - Filler Metals for Brazing and Braze Welding.

b. DI .1 - Structural Welding Code - Steel.

c. D 10.12 - Recommended Practices and Procedures for Welding Low Carbon Steel Pipe.

d. Brazing Handbook.

e. Soldering Manual.

5. Copper Development Association Inc.

a. Copper Tube Handbook.

1.3 DEFINITIONS

A. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces,

pipe and duct shafts, unheated spaces immediately below roof, spaces above ceilings, unexcavated

spaces, crawl spaces, and tunnels.

B. Exposed, Interior Installations: Exposed to view indoors. Examples include finished occupied

spaces, mechanical equipment rooms and utility tunnel.

C. Exposed, Exterior Installations: Exposed to view outdoors, or subject to outdoor ambient

temperatures and weather conditions. Examples include rooftop locations.

D. Concealed, Interior Installations: Concealed from view and protected from physical contact by

building occupants. Examples include above ceilings and in duct shafts.

E. Concealed, Exterior Installations: Concealed from view and protected from weather conditions

and physical contact by building occupants, but subject to outdoor ambient temperatures.

Examples include installations within unheated shelters.

1.4 SUB MITT ALS

A. General, all Division 23 Sections: Follow the procedures specified in Division 01. Prepare

operating and maintenance manuals.

B. Submit the following for this Section.

1. Product Data: For dielectric fittings, flexible connectors, mechanical sleeve seals, and

identification materials and devices.

2. Shop Drawings: Detail fabrication and installation for metal and wood supports and

anchorage for mechanical materials and equipment.

3. Coordination Drawings: For access panel and door locations.

4. Samples: Of color, lettering style, and other graphic representation required for each

identification material and device.


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1.5 QUALITY ASSURANCE

February 27, 2107

A. Comply with ASME A13.1 for lettering size, length of color field, colors, and viewing angles of

identification devices.

B. Equipment Selection: Equipment of higher electrical characteristics, physical dimensions,

capacities, and ratings may be furnished provided such proposed equipment is approved in writing

by Angleton Recreation Center, City of Angleton and connecting mechanical and electrical

services, circuit breakers, conduit, motors, bases, and equipment spaces are increased. Additional

costs shall be borne by the Contractor for these increases. If minimum energy ratings or

efficiencies of equipment are specified, equipment must meet design and commissioning

requirements.

C. The product models shown on the schedules on the plans represent the type, size and material of

the minimum requirements. Contractor shall provide an equal or better product.

D. If there is a discrepancy between plans, specifications or applicable codes, a better product shall be

provided or more stringent requirements shall be met or as approved by the Angleton Recreation

Center, City of Angleton.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping,

storage, and handling to prevent pipe end damage and prevent entrance of dirt, debris, and

moisture.

B. Protect stored pipes and tubes from moisture and dirt. Elevate above grade. Do not exceed

structural capacity of floor, if stored inside.

C. Protect flanges, fittings, and piping specialties from moisture and dirt.

1.7 SEQUENCING AND SCHEDULING

A. Coordinate mechanical equipment installation with other building components.

B. Arrange for pipe spaces, chases, slots, and openings in building structure during progress of

construction to allow for mechanical installations.

C. Coordinate installation of required supporting devices and set sleeves in poured-in-place concrete

and other structural components, as they are constructed.

D. Sequence, coordinate, and integrate installations of mechanical materials and equipment for

efficient flow of the Work. Coordinate installation of large equipment requiring positioning before

closing in building.

E. Coordinate connection of mechanical systems with exterior underground and overhead utilities and

services. Comply with requirements of governing regulations, franchised service companies, and

controlling agencies.


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February 27, 2107

F. Coordinate requirements for access panels and doors if mechanical items requiring access are

concealed behind finished surfaces.

G. Coordinate installation of identifying devices after completing covering and painting, if devices are

applied to surfaces. Install identifying devices before installing acoustical ceilings and similar

concealment.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the

following:

I. Dielectric Unions:

a. Capitol Manufacturing Co.

b. Central Plastics Co.

c. Eclipse, Inc.; Rockford-Eclipse Div.

d. Epco Sales Inc.

e. Hart Industries International, Inc.

f. Watts Industries, Inc.; Water Products Div.

g. Zurn Industries, Inc.; Wilkins Div.

2. Dielectric Flanges:

a. Capitol Manufacturing Co.


c. Epco Sales Inc.

d. Watts Industries, Inc.; Water Products Div.

3. Dielectric-Flange Insulating Kits:

a. Calpico, Inc.


4. Dielectric Couplings:

a. Calpico, Inc.

b. Lochinvar Corp.

5. Dielectric Nipples:

a. Grinnell Corp.; Grinnell Supply Sales Co.

b. Perfection Corp.

c. Victaulic Co. of America.

6. Metal, Flexible Connectors:

a. ANAMET Industrial, Inc.

b. Central Sprink, Inc.

c. Flexicraft Industries.

d. Flex-Weld, Inc.

e. Grinnell Corp.; Grinnell Supply Sales Co.

f. Hyspan Precision Products, Inc.

g. McWane, Inc.; Tyler Pipe; Gustin-Bacon Div.

h. Mercer Rubber Co.

1. Metraflex Co.

J. Proco Products, Inc.


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Angleton Recreation Center HVAC Replacement


k. Uniflex, Inc.

7. Rubber, Flexible Connectors:

a. General Rubber Corp.

b. Mercer Rubber Co.

c. Metraflex Co.

d. Proco Products, Inc.

e. Red Valve Co., Inc.

f. Uniflex, Inc.

8. Mechanical Sleeve Seals:

a. Calpico, Inc.

b. Metraflex Co.

c. Thunderline/Link-Seal.

2.2 PIPE AND PIPE FITTINGS

February 27, 2107

A. Refer to individual Division 23 piping Sections for pipe and fitting materials and joining methods.

B. Pipe Threads: ASME B 1.20.1 for factory-threaded pipe and pipe fittings.

2.3 JOINING MATERIALS

A. Refer to individual Division 23 piping Sections for special joining materials not listed below.

B. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system

contents.

1. ASME B l6.21, nonmetallic, flat, asbestos-free, 1/8-inch maximum thickness, unless

thickness or specific material is indicated.

a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

2. A WW A C 110, rubber, flat face, 1/8 inch thick, unless otherwise indicated; and full-face or

ring type, unless otherwise indicated.

C. Flange Bolts and Nuts: ASME B 18.2.1, carbon steel, unless otherwise indicated.

D. Solder Filler Metals: ASTM B32.

1. Alloy Sn95 or Alloy Sn94: Approximately 95% tin and 5% silver, with 0.10% lead content.

2. Alloy E: Approximately 95% tin and 5% copper, with 0.10% maximum lead content.

3. Alloy HA: Tin-antimony-silver-copper zinc, with 0.10% maximum lead content.

4. Alloy HB: Tin-antimony-silver-copper nickel, with 0.10% maximum lead content.

5. Alloy Sb5: 95% tin and 5% antimony, with 0.20% maximum lead content.

E. Brazing Filler Metals: A WS A5.8.

1. BCuP Series: Copper-phosphorus alloys.

2. BAgl : Silver alloy.

F. Welding Filler Metals: Comply with AWS D l0.12 for welding materials appropriate for wall

thickness and chemical analysis of steel pipe being welded.

COMMON WORK RES UL TS FOR MECHANICAL 23 05 00 - 5

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February 27, 2107

2.4

G. Flanged, Ductile-Iron Pipe Gasket, Bolts, and Nuts: A WW A C 110, rubber gasket, carbon-steel

bolts and nuts.

H. Couplings: Iron-body sleeve assembly, fabricated to match OD of plain-end, pressure pipes.

A.

B.

C.

D.

E.

F.

1. Sleeve: ASTM A126, Class B, gray iron.

2. Followers: ASTM A4 7 malleable iron or ASTM A536 ductile iron.

3. Gaskets: Rubber.

4. Bolts and Nuts: AWWA Cl 11.

5. Finish: Enamel paint.

DIELECTRIC FITTINGS

General: Assembly or fitting with insulating material isolating joined dissimilar metals, to prevent

galvanic action and stop corrosion.

Description: Combination of copper alloy and ferrous; threaded, solder, plain, and weld-neck end

types and matching piping system materials.

Insulating Material: Suitable for system fluid, pressure, and temperature.

Dielectric Unions: Factory-fabricated, union assembly, for 250-psig minimum working pressure at

180°

F (82°

C).

Dielectric Flanges: Factory-fabricated, companion-flange assembly, for 150- or 300-psig minimum

working pressure as required to suit system pressures.

Dielectric-Flange Insulation Kits: Field-assembled, companion-flange assembly, full-face or ring

type. Components include neoprene or phenolic gasket, phenolic or polyethylene bolt sleeves,

phenolic washers, and steel backing washers.

1. Provide separate companion flanges and steel bolts and nuts for 150- or 300-psig minimum

working pressure as required to suit system pressures.

G. Dielectric Couplings: Galvanized-steel coupling with inert and noncorrosive, thermoplastic lining;

threaded ends; and 300-psig minimum working pressure at 225°F (107°C).

H. Dielectric Nipples: Electroplated steel nipple with inert and noncorrosive, thermoplastic lining;

plain, threaded, or grooved ends; and 300-psig minimum working pressure at 225°F ( 107°

C).

2.5 FLEXIBLE CONNECTORS

A. General: Fabricated from materials suitable for system fluid and that will provide flexible pipe

connections. Include 125-psig minimum working-pressure rating, unless higher working pressure is

indicated, and ends according to the following:

1. 2-Inch NPS and Smaller: Threaded.

2. 2-1/2-Inch NPS and Larger: Flanged.

3. Option for 2-1/2-Inch NPS and Larger: Grooved for use with keyed couplings.


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February 27, 2107

B. Bronze-Hose, Flexible Connectors: Corrugated, bronze, inner tubing covered with bronze wire

braid. Include copper-tube ends or bronze flanged ends, braze welded to hose.

C. Stainless-Steel-Hose/Steel Pipe, Flexible Connectors: Corrugated, stainless-steel, inner tubing

covered with stainless-steel wire braid. Include steel nipples or flanges, welded to hose.

D. Rubber, Flexible Connectors: CR or EPDM elastomer rubber construction, with multiple plies of

NP fabric, molded and cured in hydraulic presses. Include 125-psig minimum working-pressure

rating at 220°F (104°C). Units may be straight or elbow type, unless otherwise indicated.

2.6 MECHANICAL SLEEVE SEALS

A. Description: Modular design, with interlocking rubber links shaped to continuously fill annular

space between pipe and sleeve. Include connecting bolts and pressure plates.

2. 7 PIPING SPECIAL TIES

A. Sleeves: The following materials are for wall, floor, slab, and roof penetrations:

1. Steel Sheet Metal: 0.0239-inch minimum thickness, galvanized, round tube closed with

welded longitudinal joint.

2. Steel Pipe: ASTM A53, Type E, Grade A, Schedule 40, galvanized, plain ends.

3. Cast Iron: Cast or fabricated "wall pipe" equivalent to ductile-iron pressure pipe, with plain

ends and integral waterstop, unless otherwise indicated.

4. Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange. Include

clamping ring and bolts and nuts for membrane flashing.

a. Underdeck Clamp: Clamping ring with set screws.

B. Escutcheons: Manufactured wall, ceiling, and floor plates; deep-pattern type if required to conceal

protruding fittings and sleeves.

1. ID: Closely fit around pipe, tube, and insulation of insulated piping.

2. OD: Completely cover opening.

3. Cast Brass: One piece, with set screw.

a. Finish: Polished chrome-plate.

4. Cast Brass: Split casting, with concealed hinge and set screw.

a. Finish: Polished chrome-plate.

5. Stamped Steel: One piece, with set screw and chrome-plated finish.

6. Stamped Steel: One piece, with spring clips and chrome-plated finish.

7. Stamped Steel: Split plate, with concealed hinge, set screw, and chrome-plated finish.

8. Stamped Steel: Split plate, with concealed hinge, spring clips, and chrome-plated finish.

9. Stamped Steel: Split plate, with exposed-rivet hinge, set screw, and chrome-plated finish.

10. Stamped Steel: Split plate, with exposed-rivet hinge, spring clips, and chrome-plated finish.

11. Cast-Iron Floor Plate: One-piece casting.

2.8 IDENTIFYING DEVICES AND LABELS

A. General: Manufacturer's standard products of categories and types required for each application as

referenced in other Division 23 Sections. If more than one type is specified for application,

selection is Installer's option, but provide one selection for each product category.


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February 27, 2107

B. Equipment Nameplates: Metal nameplate with operational data engraved or stamped; permanently

fastened to equipment.

1. Data: Manufacturer, product name, model number, serial number, capacity, operating and

power characteristics, labels of tested compliances, and similar essential data.

2. Location: Accessible and visible location.

C. Stencils: Standard stencils, prepared for required applications with letter sizes complying with

recommendations of ASME A l 3.1 for piping and similar applications, but not less than 1-1/4-inch

high letters for ductwork and not less than 3/4-inch- high letters for access door signs and similar

operational instructions.

1. Material: Brass.

2. Stencil Paint: Standard exterior-type stenciling enamel; black, unless otherwise indicated;

either brushing grade or pressurized spray-can form and grade.

3. Identification Paint: Standard identification enamel of colors indicated or, if not otherwise

indicated for piping systems, comply with ASME A13.1 for colors.

D. Snap-on Plastic Pipe Markers: Manufacturer's standard preprinted, semirigid, snap on, color

coded, complying with ASME A13.1.

E. Pressure-Sensitive Pipe Markers: Manufacturer's standard preprinted, permanent adhesive, color

coded, pressure-sensitive vinyl, complying with ASME A13. l.

F. Plastic Duct Markers: Manufacturer's standard color-coded, laminated plastic. Comply with the

following color code:

1. Green: Cold air.

2. Yell ow: Hot air.

3. Yellow/Green or Green: Supply air.

4. Blue: Exhaust, outside, return, and mixed air.

5. For hazardous exhausts, use colors and designs recommended by ASME A13.l.

6. Nomenclature: Include the following:

a. Direction of airflow.

b. Duct service.

c. Duct origin.

d. Duct destination.

e. Design cubic feet per minute.

G. Engraved Plastic-Laminate Signs: ASTM D709, Type I, cellulose, paper-base, phenolic-resin

laminate engraving stock; Grade ES-2, black surface, black phenolic core, with white melamine

subcore, unless otherwise indicated.

1. Fabricate in sizes required for message.

2. Engraved with engraver's standard letter style, of sizes and with wording to match equipment

identification.

3. Punch for mechanical fastening.

4. Thickness: 1/16 inch, for units up to 20 sq. in. or 8 inches long; 1/8 inch for larger units.

5. Fasteners: Self-tapping stainless-steel screws or contact-type permanent adhesive.

H. Plastic Equipment Markers: Color-coded, laminated plastic. Comply with the following color

code:


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February 27, 2107

1. Green: Cooling equipment and components.

2. Yell ow: Heating equipment and components.

3. Yellow/Green: Combination cooling and heating equipment and components.

4. Blue: Equipment and components that do not meet any criteria above.

5. For hazardous equipment, use colors and designs recommended by ASME A 13 .1.

6. Nomenclature: Include the following, matching terminology on schedules as closely as

possible:

a. Name and room number.

b. Equipment service.

c. Design capacity.

d. Other design parameters such as pressure drop, entering and leaving conditions, and

rpm.

7. Size: Approximate 2-1/2 by 4 inches for control devices, dampers, and valves; and 4-1/2 by 6

inches for equipment.

I. Lettering and Graphics: Coordinate names, abbreviations, and other designations used in

mechanical identification, with corresponding designations indicated. Use numbers, lettering, and

wording indicated for proper identification and operation/maintenance of mechanical systems and

equipment.

1. Multiple Systems: If multiple systems of same generic name are indicated, provide

identification that indicates individual system number and service such as AHU #1, AHU #2.

2.9 GROUT

A. Nonshrink, Nonmetallic Grout: ASTM Cl 107, Grade B.

1. Characteristics: Post-hardening, volume-adjusting, dry, hydraulic-cement grout, nonstaining,

noncorrosive, nongaseous, and recommended for interior and exterior applications.

2. Design Mix: 5000-psig, 28-day compressive strength.

3. Packaging: Premixed and factory packaged.

PART 3 - EXECUTION

3.1 PIPING SYSTEMS - COMMON REQUIREMENTS

A. General: Install piping as described below, unless piping Sections specify otherwise. Individual

Division 23, piping Sections specify unique piping installation requirements.

B. General Locations and Arrangements: Drawing plans, schematics, and diagrams indicate general

location and arrangement of piping systems. Indicated locations and arrangements were used to

size pipe and calculate friction loss, expansion, pump sizing, and other design considerations.

Install piping as indicated, unless deviations to layout are approved on Coordination Drawings.

C. Install piping at indicated slope or per industry practice.

D. Install components with pressure rating equal to or greater than system operating pressure.

E. Install piping in concealed interior and exterior locations, except in equipment rooms and service

areas.


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F. Install piping free of sags and bends.

February 27, 2107

G. Install exposed interior and exterior piping at right angles or parallel to building walls. Diagonal

runs are prohibited, unless otherwise indicated.

H. Install piping tight to slabs, beams, joists, columns, walls, and other building elements. Allow

sufficient space above removable ceiling panels to allow for ceiling panel removal.

I. Install piping to allow application of insulation plus 1-inch clearance around insulation.

J. Locate groups of pipes parallel to each other, spaced to permit valve or fitting servicing.

K. Install fittings for changes in direction and branch connections.

L. Install couplings according to manufacturer's written instructions.

M. Install pipe escutcheons for pipe penetrations of concrete and masonry walls, wall board partitions,

and suspended ceilings according to the following:

1. Chrome-Plated Piping: Cast brass, one piece, with set screw, and polished chrome-plated

finish. Use split-casting escutcheons if required, for existing piping.

2. Uninsulated Piping Wall Escutcheons: Cast brass or stamped steel, with set screw.

3. Uninsulated Piping Floor Plates in Utility Areas: Cast-iron floor plates.

4. Insulated Piping: Cast brass or stamped steel; with concealed hinge, spring clips, and

chrome-plated finish.

5. Piping in Utility Areas: Cast brass or stamped steel, with set-screw or spring clips.

N. Sleeves are not required for core drilled holes.

0. Install sleeves for pipes passing through concrete and masonry walls, gypsum-board partitions, and

concrete floor and roof slabs.

1. Cut sleeves to length for mounting flush with both surfaces.

a. Exception: Extend sleeves installed in floors of mechanical equipment areas or other

wet areas 4 inches above finished floor level. Extend cast-iron sleeve fittings below

floor slab as required to secure clamping ring if ring is specified. See structural

drawings for structural frame for sleeve greater than 6" in size.

2. Build sleeves into new walls and slabs as work progresses.

3. Install sleeves large enough to provide 1/4-inch annular clear space between sleeve and pipe

or pipe insulation. Use the following sleeve materials:

a. Steel Pipe Sleeves: For pipes smaller than 6-inch NPS.

b. Steel, Sheet-Metal Sleeves: For pipes 6-inch NPS and larger, penetrating gypsum-board

partitions.

c. Stack Sleeve Fittings: For pipes penetrating floors with membrane waterproofing.

Secure flashing between clamping flanges. Install section of cast-iron soil pipe to

extend sleeve to 2 inches above finished floor level. Refer to Division 07 for flashing.

(1) Seal space outside of sleeve fittings with nonshrink, nonmetallic grout.

4. Except for underground wall penetrations, seal annular space between sleeve and pipe or pipe

insulation, using elastomeric joint sealants. Refer to Division 7 for joint sealant materials.


18



February 27, 2107

5. Use Type S, Grade NS, Class 25, Use 0, neutral-curing silicone sealant, unless otherwiseindicated.

P. Aboveground, Exterior-Wall, Pipe Penetrations: Seal penetrations using sleeves and mechanicalsleeve seals. Size sleeve for 1-inch annular clear space between pipe and sleeve for installingmechanical sleeve seals.

1. Install steel pipe for sleeves smaller than 6 inches in diameter.2. Install cast-iron "wall pipes" for sleeves 6 inches in diameter and larger.3. Assemble and install mechanical sleeve seals according to manufacturer's written

instructions. Tighten bolts that cause rubber sealing elements to expand and make watertightseal.

Q. Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors atpipe penetrations. Seal pipe penetrations with firestopping materials. Refer to Division 07 forfirestopping materials.

R. Verify final equipment locations for roughing-in.

S. Refer to equipment specifications in other Sections of these Specifications for roughing-inrequirements.

T. Piping Joint Construction: Join pipe and fittings as follows and as specifically required mindividual piping specification Sections:

1. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.2. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.3. Soldered Joints: Construct joints according to AWS's "Soldering Manual," Chapter "The

Soldering of Pipe and Tube"; or CDA's "Copper Tube Handbook."4. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," Chapter "Pipe and

Tube."5. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B 1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restorefull ID. Join pipe fittings and valves as follows:a. Note internal length of threads in fittings or valve ends, and proximity of internal seat or

wall, to determine how far pipe should be threaded into joint.b. Apply appropriate tape or thread compound to external pipe threads, unless dry seal

threading is specified.c. Align threads at point of assembly.d. Tighten joint with wrench. Apply wrench to valve end into which pipe is being

threaded.e. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.6. Welded Joints: Construct joints according to AWS Dl0.12, "Recommended Practices and

Procedures for Welding Low Carbon Steel Pipe," using qualified processes and weldingoperators according to "Quality Assurance" Article.


19


February 27, 2107

7. Flanged Joints: Align flange surfaces parallel. Select appropriate gasket material, size, type,

and thickness for service application. Install gasket concentrically positioned. Assemble

joints by sequencing bolt tightening to make initial contact of flanges and gaskets as flat and

parallel as possible. Use suitable lubricants on bolt threads. Tighten bolts gradually and

uniformly using torque wrench.

U. Piping Connections: Make connections according to the following, unless otherwise indicated:

1. Install unions, in piping 2-inch NPS and smaller, adjacent to each valve and at final

connection to each piece of equipment with 2-inch NPS or smaller threaded pipe connection.

2. Install flanges, in piping 2-1/2-inch NPS and larger, adjacent to flanged valves and at final

connection to each piece of equipment with flanged pipe connection.

3. Dry Piping Systems: Install dielectric unions and flanges to connect piping materials of

dissimilar metals.

4. Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping materials

of dissimilar metals.

3.2 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS

A. Install equipment to provide maximum possible headroom, if mounting heights are not indicated.

B. Install equipment according to approved submittal data. Portions of the Work are shown only in

diagrammatic form. Refer conflicts to Angleton Recreation Center, City of Angleton 's

representatives.

C. Install equipment level and plumb, parallel and perpendicular to other building systems and

components in exposed interior spaces, unless otherwise indicated.

D. Install mechanical equipment to facilitate service, maintenance, and repair or replacement of

components. Connect equipment for ease of disconnecting, with minimum interference to other

installations. Extend grease fittings to accessible locations.

E. Install equipment giving right of way to piping installed at required slope.

F. Install flexible connectors on equipment side of shutoff valves, horizontally and parallel to

equipment shafts if possible.

3.3 LABELING AND IDENTIFYING

A. Piping Systems: Install pipe markers on each system. Include arrows showing normal direction of

flow.

1. Stenciled Markers: According to ASME A13. l.

2. Plastic markers, with application systems. Install on insulation segment if required for hot,

uninsulated piping.

3. Locate pipe markers as follows if piping is exposed in finished spaces, machine rooms, and

accessible maintenance spaces, such as shafts, tunnels, plenums, and exterior nonconcealed

locations:


20



a. Near each valve and control device.

February 27, 2107

b. Near each branch, excluding short takeoffs for fixtures and tenninal units. Mark each

pipe at branch, if flow pattern is not obvious.

c. Near locations if pipes pass through walls, floors, ceilings, or enter nonaccessible

enclosures.

d. At access doors, manholes, and similar access points that permit view of concealed

p1pmg.

e. Near major equipment items and other points of origination and termination.

f. Spaced at maximum of 50-foot intervals along each run. Reduce intervals to 25 feet in

congested areas of piping and equipment.

g. On piping above removable acoustical ceilings, except omit intermediately spaced

markers.

B. Equipment: Install engraved plastic-laminate sign or equipment marker on or near each major item

of mechanical equipment.

1. Lettering Size: Minimum 1/4-inch- high lettering for name of unit if viewing distance is less

than 24 inches, 1/2-inch-high lettering for distances up to 72 inches, and proportionately

larger lettering for greater distances. Provide secondary lettering two-thirds to three-fourths

of size of principal lettering.

2. Text of Signs: Provide name of identified unit. Include text to distinguish between multiple

units, inform user of operational requirements, indicate safety and emergency precautions,

and warn of hazards and improper operations.

C. Duct Systems: Identify air supply, return, exhaust, intake, and relief ducts with duct markers; or

provide stenciled signs and arrows, showing duct system service and direction of flow.

1. Location: In each space, if ducts are exposed or concealed by removable ceiling system,

locate signs near points where ducts enter into space and at maximum intervals of 50 feet.

D. Adjusting: Relocate identifying devices as necessary for unobstructed view in finished

construction.

3 .4 CONCRETE BASES

A. Construct concrete bases of dimensions indicated, but not less than 4 inches larger in both

directions than supported unit. Follow supported equipment manufacturer's setting templates for

anchor bolt and tie locations. Use 3000-psig, 28-day compressive-strength concrete and

reinforcement as specified in Division 03.


21


3.5 ERECTION OF METAL SUPPORTS AND ANCHORAGE

February 27, 2107

A. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to

support and anchor mechanical materials and equipment.

B. Field Welding: Comply with AWS Dl.1, "Structural Welding Code--Steel."

3.6 CUTTING AND PATCHING

A. Cut, channel, chase, and drill floors, walls, partitions, ceilings, and other surfaces necessary for

mechanical installations. Perform cutting by skilled mechanics of trades involved.

B. Repair cut surfaces to match adjacent surfaces.

3.7 GROUTING

A. Install nonmetallic, nonshrink, grout for mechanical equipment base bearing surfaces, pump and

other equipment base plates, and anchors. Mix grout according to manufacturer's written

instructions.

B. Clean surfaces that will come into contact with grout.

C. Provide forms as required for placement of grout.

D. Avoid air entrapment during placing of grout.

E. Place grout, completely filling equipment bases.

F. Place grout on concrete bases to provide smooth bearing surface for equipment.

G. Place grout around anchors.

H. Cure placed grout according to manufacturer's written instructions.

END OF SECTION


22

23 05 13COMMON MOTOR REQUIREMENTS

FOR HVAC EQUIPMENT

23



February 27, 2107

SECTION 23 05 13 - COMMON MOTOR REQUIREMENTS FOR HV AC EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes basic requirements for factory-installed and field-installed motors.

1.2 REFERENCES


1. National Electrical Manufacturers Association (NEMA):

a. MG 1 - Motors and Generators.

2. National Fire Protection Association (NFP A):

a. 70 - National Electrical Code.

1.3 SUBMITT ALS

A. General: Submit the following in accordance with Section 23 05 00 - Common Work Results for

Mechanical.

1. Product Data: Show nameplate data and ratings; characteristics; mounting arrangements; size

and location of winding termination lugs, conduit entry, and grounding lug; and coatings.

2. Factory Test Reports: For specified tests.

3. Field Test Reports: Indicate and interpret test results for compliance with performance

requirements.


A. Comply with NFP A 70.

B. Listing and Labeling: Provide motors specified in this Section that are listed and labeled.

1. Terms "Listed and Labeled": As defined in the National Electrical Code, Article 100.

2. Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing Laboratory"

as defined in OSHA Regulation 1910.7.

PART 2 - PRODUCTS

2.1 BASIC MOTOR REQUIREMENTS

A. Basic requirements apply to mechanical equipment motors, unless otherwise indicated.

COMMON MOTOR REQUIREMENTS FOR HV AC EQUIPMENT 23 05 13 - 1

24


February 27, 2107

B. Motors 1/2 HP and Larger: Polyphase, unless otherwise indicated.

C. Motors Smaller than 1/2 HP: Single phase.

D. Frequency Rating: 60 Hz.

E. Voltage Rating: Determined by voltage of circuit to which motor is connected.

F. Service Factor: According to NEMA MG 1, unless otherwise indicated.

G. Capacity and Torque Characteristics: Rated for continuous duty and sufficient to start, accelerate,

and operate connected loads at designated speeds, in indicated environment, with indicated

operating sequence, and without exceeding nameplate ratings or considering service factor.

H. Enclosure: Open dripproof, unless otherwise indicated.

2.2 POL YPHASE MOTORS

A. Description: NEMA MG 1, medium induction motor.

1. Design Characteristics: NEMA MG 1, Design B, unless otherwise indicated.

2. Energy-Efficient Design: Premium efficiency in accordance with IEEE 112, Test Method B.

3. Stator: Copper windings, unless otherwise indicated. Multispeed motors have separate

winding for each speed.

4. Rotor: Squirrel cage, unless otherwise indicated.

5. Bearings: Double-shielded, prelubricated ball bearings suitable for radial and thrust loading.

6. Temperature Rise: Match insulation rating, unless otherwise indicated.

7. Insulation: Class F, unless otherwise indicated.

B. Motors Used with Reduced-Inrush Controllers: Match wmng connection requirements for

indicated controller, with required motor leads brought to motor terminal box to suit control

method.

C. Rugged-Duty Motors: Where indicated, motors are totally enclosed with 1.25 minimum service

factor, greased bearings, integral condensate drains, and capped relief vents. Windings are

insulated with nonhygroscopic material. External finish is chemical-resistant paint over corrosion

resistant primer.

D. Source Quality Control: Perform the following routine tests according to NEMA MG 1:

1. Measurement of winding resistance.

2. No-load readings of current and speed at rated voltage and frequency.

3. Locked rotor current at rated frequency.

COMMON MOTOR REQUIREMENTS FOR HV AC EQUIPMENT 23 05 13 - 2

25


4. High-potential test.

5. Alignment.

2.3 SINGLE-PHASE MOTORS

February 27, 2107

A. Type: As indicated or selected by manufacturer from one of the following, to suit starting torque

and other requirements of specific motor application.

1. Permanent-split capacitor.

2. Split-phase start, capacitor run.

3. Capacitor start, capacitor run.

B. Shaded-Pole Motors: Do not use, unless motors are smaller than 1/20 hp.

C. Thermal Protection: Provide on all single phase motors. Internal protection automatically opens

power supply circuit to motor when winding temperature exceeds a safe value calibrated to

temperature rating of motor insulation. Thermal protection device automatically resets when motor

temperature returns to normal range, unless otherwise indicated.

D. Bearings: Ball-bearing type for belt-connected motors and other motors with high radial forces on

motor shaft. Sealed, prelubricated sleeve bearings for other single-phase motors.

PART 3 -EXECUTION

3.1 ADJUSTING

A. Use adjustable motor mounting bases for belt-driven motors.

B. Align pulleys and install belts.

C. Tension according to manufacturer's written instructions.

END OF SECTION

COMMON MOTOR REQUIREMENTS FOR HY AC EQUIPMENT 23 05 13 - 3

26

23 05 23

GENERAL DUTY VALVES FORHVAC PIPING

27



SECTION 23 05 23 - GENERAL-DUTY VAL YES FOR HV AC PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes general duty valves common to several mechanical piping systems.

B. Related Work Specified Elsewhere:

1. Special purpose valves: Division 23.

1.2 REFERENCES



a. A126 - Gray Iron Castings for Valves, Flanges, and Pipe Fittings.

b. B62 - Composition Bronze or Ounce Metal Castings.

c. B584-90 - Copper Alloy Sand Castings for General Applications.


a. B 1.20.1 - Pipe Threads, General Purpose (Inch).

b. B 16.1 - Cast Iron Pipe Flanges and Flange Fittings.

c. B 16.5 - Pipe Flanges and Flanged Fittings.

d. B 16.18 - Cast Copper Alloy Solder Joint Pressure Fittings.

e. B 16.24 - Bronze Pipe Flanges and Flanged Fittings.

f. B31.1 - Power Piping.

g. B31.9 - Building Services Piping.

3. Manufacturers Standardization Society of the Valve and Fittings Industry (MSS):

a. SP-45 - Bypass and Drain Connections.

b. SP-67 - Butterfly Valves.

c. SP-70 - Cast Iron Gate Valves, Flanged and Threaded Ends.

d. SP-71 - Cats Iron Swing Check Valves, Flanged and Threaded Ends.

e. SP-78 - Cast Iron Plug Valves, Flanged and Threaded Ends.

f. SP-80 - Bronze Gate, Globe, Angle and Check Valves.

g. SP-85 - Cast Iron Globe and Angle Valves, Flanged and Threaded Ends.

h. SP-110 - Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved, and Flared Ends.

1.3 SUBMITT ALS

A. General: Submit each item in this Article in accordance with Section 23 05 00 - Common Work

Results for Mechanical.

1. Product Data for each valve type. Include body material, valve design, pressure and temperature

classification, end connection details, seating materials, trim material and arrangement,

dimensions and required clearances, and installation instructions. Include list indicating valve

and its application.

GENERAL-DUTY VAL YES FOR HV AC PIPING 23 05 23 - 1

28




February 27, 2107

A. Single-Source Responsibility: To the fullest extent possible, provide products of the same kind from

a single source.

B. ASME Compliance: Comply with ASME B31.9 for building services piping and ASME B31.1 for

power piping.

C. MSS Compliance: Comply with the various MSS Standard Practice documents referenced.


A. Prepare valves for shipping as follows:

1. Protect internal parts against rust and corrosion.2. Protect threads, flange faces, grooves, and weld ends.

3. Set globe and gate valves closed to prevent rattling.

4. Set ball and plug valves open to minimize exposure of functional surfaces.

5. Set butterfly valves closed or slightly open.

6. Block check valves in either closed or open position.

B. Use the following precautions during storage:

1. Maintain valve end protection.

2. Store indoors and maintain valve temperature higher than ambient dew-point temperature. If

outdoor storage is necessary, store valves off the ground in watertight enclosures.

C. Use a sling to handle large valves. Rig to avoid damage to exposed parts. Do not use handwheels

and stems as lifting or rigging points.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Gate Valves:

a. Crane Company; Valves and Fitting Division.

b. Hammond Valve Corporation.

c. Kitz Corp. of America.

d. Lunkenheimer/Cincinnati Valve Co.

e. Milwaukee Valve Company, Inc.

f. NIBCO Inc.

g. Powell: Wm. Powell Company (The).

h. Red-White Valve Corp.

i. Stockham Valves & Fittings, Inc.

2. Ball Valves:

a. Conbraco Industries, Inc.; Apollo Division.


c. Milwaukee Valve Company, Inc.

GENERAL-DUTY VALVES FOR HV AC PIPING 23 05 23 - 2

29



d. NIBCO Inc.

e. Stockham Valves & Fittings, Inc.

f. Tyler Pipe.

g. Victaulic Company of America.

3. Plug Valves:

a. Grinnell Corp.

b. Huber: J.M. Huber Corp.; Flow Control Division (Resun Valves).

c. NIBCO Inc.

d. Stockham Valves & Fittings, Inc.

e. Victaulic Company of America.

4. Globe Valves:

a. Crane Company; Valves and Fitting Division.


c. Kitz Corp. of America.

d. Lunkenheimer/Cincinnati Valve Co.

e. Milwaukee Valve Company, Inc.

f. NIBCO Inc.

g. Powell: Wm. Powell Company (The).

h. Red-White Valve Corp.

i. Stockham Valves & Fittings, Inc.

5. Butterfly Valves:

a. Center Line, Mark Controls Corporation.

b. Crane Company; Valves and Fitting Division.

c. General Signal; DeZurik Unit.

d. Grinnell Corp.

e. Hammond Valve Corporation.

f. Keystone Valve USA, Inc.

g. Milwaukee Valve Company, Inc.

h. NIBCO Inc.

1. Red-White Valve Corp.

J. Stockham Valves & Fittings, Inc.

k. Tyler Pipe.

1. Ultraflo Corporation.

m. Victaulic Company of America.

6. Swing Check Valves:

a. Cla-Val Co.

b. Crane Company; Valves and Fitting Division.

c. Hammond Valve Corporation.

d. Kitz Corp. of America.

e. Lunkenheimer/Cincinnati Valve Co.

f. Milwaukee Valve Company, Inc.

g. NIBCO Inc.

h. Powell: Wm. Powell Company (The).

1. Red-White Valve Corp.

J. Stockham Valves & Fittings, Inc.

k. Victaulic Company of America.

GENERAL-DUTY VALVES FOR HV AC PIPING

February 27, 2107

23 05 23 - 3

30



February 27, 2107

2.2 BASIC, COMMON FEATURES

A. Design: Rising stem or rising outside screw and yoke stems, except as specified below.

1. Nonrising stem valves may be used only where headroom prevents full extension of rising

stems.

B. Pressure and Temperature Ratings: As indicated in the "Application Schedule" of Part 3 of this

Section and as required to suit system pressures and temperatures.

C. Sizes: Same size as upstream pipe, unless otherwise indicated.

D. Operators: Use specified operators and handwheels, except provide the following special operator

features:

1. Handwheels: For valves other than quarter turn.2. Lever Handles: For quarter-turn valves 6 inches and smaller, except for plug valves, which shall

have square heads. Furnish Angleton Recreation Center, City of Angleton with 1 wrench for

every 10 plug valves.

3. Chain-Wheel Operators: For valves 4 inches and larger, installed 96 inches or higher above

finished floor elevation.

4. Gear-Drive Operators: For quarter-turn valves 8 inches and larger.

E. Extended Stems: Where insulation is indicated or specified, provide extended stems arranged to

receive insulation.

F. Bypass and Drain Connections: Comply with MSS SP-45 bypass and drain connections.

G. Threads: ASME Bl.20.1.

H. Flanges: ASME B 16.1 for cast iron, ASME B 16.5 for steel, and ASME B 16.24 for bronze valves.

I. Solder Joint: ASME B 16.18.

1. Caution: Where soldered end connections are used, use solder having a melting point below

840°F ( 450°C) for gate, globe, and check valves; below 421 °F (216°C) for ball valves.

2.3 GA TE VAL YES

A. Gate Valves, 2-1/2 Inches and Smaller: MSS SP-80; Class 125, 200-psi cold working pressure

(CWP), or Class 150, 300-psi CWP; ASTM B62 cast-bronze body and bonnet, solid-bronze wedge,

copper-silicon alloy rising stem, teflon-impregnated packing with bronze packing nut, threaded or

soldered end connections; and with aluminum or malleable-iron handwheel.

B. Gate Valves, 3 Inches and Larger: MSS SP-70, Class 125, 200-psi CWP, ASTM A126 cast-iron

body and bonnet, solid cast-iron wedge, brass-alloy stem, outside screw and yoke, teflon

impregnated packing with 2-piece packing gland assembly, flanged end connections; and with cast

iron handwheel.


31



February 27, 2107

2.4 BALL VALVES

A. Ball Valves, 4 Inches and Smaller: MSS SP-110, Class 150, 600-psi CWP, ASTM B584 bronze

body and bonnet, 2-piece construction; chrome-plated brass ball, standard port for 1/2-inch valves

and smaller and conventional port for 3/4-inch valves and larger; blowout proof; bronze or brass

stem; teflon seats and seals; threaded or soldered end connections:

1. Operator: Vinyl-covered steel lever handle.

2. Stem Extension: For valves installed in insulated piping.

3. Memory Stop: For operator handles.

2.5 PLUG VALVES

A. Plug Valves: MSS SP-78, 175-psi CWP, ASTM A126 cast-iron body and bonnet, cast-iron plug,

Buna N, Viton, or teflon packing, flanged or grooved end connections:

1. Operator: Lever.

2.6 GLOBE VALVES

A. Globe Valves, 2-1/2 Inches and Smaller: MSS SP-80; Class 125, 200-psi CWP, or Class 150, 300-

psi CWP; ASTM B62 cast-bronze body and screwed bonnet, rubber, bronze, or teflon disc, silicon

bronze-alloy stem, teflon-impregnated packing with bronze nut, threaded or soldered end

connections; and with aluminum or malleable-iron handwheel.

B. Globe Valves, 3 Inches and Larger: MSS SP-85, Class 125, 200-psi CWP, ASTM A126 cast-iron

body and bolted bonnet with bronze fittings, renewable bronze seat and disc, brass-alloy stem,

outside screw and yoke, teflon-impregnated packing with cast-iron follower, flanged end

connections; and with cast-iron handwheel.

2. 7 BUTTERFLY VALVES

A. Butterfly Valves: MSS SP-67, 200-psi CWP, 150-psi maximum pressure differential, ASTM A126

cast-iron body and bonnet, extended neck, stainless-steel stem, field-replaceable EPDM or Buna N

sleeve and stem seals, wafer, lug, or grooved style:

1. Disc Type: Nickel-plated ductile iron.

2. Disc Type: Aluminum bronze.

3. Operator for Sizes 2 Inches to 6 Inches: Standard lever handle.

4. Operator for Sizes 8 Inches to 24 Inches: Gear operator with position indicator.


32



2.8 CHECK VALVES

February 27, 2107

A. Swing Check Valves, 2-1/2 Inches and Smaller: MSS SP-80; Class 125, 200-psi CWP, or

Class 150, 300-psi CWP; horizontal swing, Y-pattem, ASTM B62 cast-bronze body and cap,

rotating bronze disc with rubber seat or composition seat, threaded or soldered end connections:

B. Swing Check Valves, 3 Inches and Larger: MSS SP-71, Class 125, 200-psi CWP, ASTM A126

cast-iron body and bolted cap, horizontal-swing bronze disc, flanged or grooved end connections.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine piping system for compliance with requirements for installation tolerances and other

conditions affecting performance of valves. Do not proceed with installation until unsatisfactory

conditions have been corrected.

B. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove special

packing materials, such as blocks, used to prevent disc movement during shipping and handling.

C. Operate valves from fully open to fully closed positions. Examine guides and seats made accessible

by such operation.

D. Examine threads on valve and mating pipe for form and cleanliness.

E. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper size,

length, and material. Check gasket material for proper size, material composition suitable for

service, and freedom from defects and damage.

F. Do not attempt to repair defective valves; replace with new valves.

3.2 INSTALLATION

A. Install valves as indicated, according to manufacturer's written instructions.

B. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate the

general arrangement of piping, fittings, and specialties.

C. Install valves with unions or flanges at each piece of equipment arranged to allow servicing,

maintenance, and equipment removal without system shutdown.

D. Locate valves for easy access and provide separate support where necessary.

E. Install valves in horizontal piping with stem at or above the center of the pipe.

F. Install valves in a position to allow full stem movement.


33



G. For chain-wheel operators, extend chains to 60 inches above finished floor elevation.

H. Installation of Check Valves: Install for proper direction of flow as follows:1. Swing Check Valves: Horizontal position with hinge pin level.

3.3 SOLDERED CONNECTIONS

A. Cut tube square and to exact lengths.

B. Clean end of tube to depth of valve socket with steel wool, sand cloth, or a steel wire brush to abright finish. Clean valve socket.

C. Apply proper soldering flux in an even coat to inside of valve socket and outside of tube.

D. Open gate and globe valves to fully open position.

E. Remove the cap and disc holder of swing check valves having composition discs.

F. Insert tube into valve socket, making sure the end rests against the shoulder inside valve. Rotatetube or valve slightly to ensure even distribution of the flux.

G. Apply heat evenly to outside of valve around joint until solder melts on contact. Feed solder until itcompletely fills the joint around tube. Avoid hot spots or overheating valve. Once the solder startscooling, remove excess amounts around the joint with a cloth or brush.

3.4 THREADED CONNECTIONS

A. Note the internal length of threads in valve ends and proximity of valve internal seat or wall todetermine how far pipe should be threaded into valve.

B. Align threads at point of assembly.

C. Apply appropriate tape or thread compound to the external pipe threads, except where dry sealthreading is specified.

D. Assemble joint, wrench tight. Wrench on valve shall be on the valve end into which the pipe isbeing threaded.

3.5 FLANGED CONNECTIONS

A. Align flange surfaces parallel.

B. Assemble joints by sequencing bolt tightening to make initial contact of flanges and gaskets as flatand parallel as possible. Use suitable lubricants on bolt threads. Tighten bolts gradually anduniformly with a torque wrench.

C. For dead-end service, butterfly valves require flanges both upstream and downstream for propershutoff and retention.


34



3.6 VAL VE END SELECTION

A. Select valves with the following ends or types of pipe/tube connections:

February 27, 2107

1. Copper Tube Size, 2-1/2 Inches and Smaller: Solder ends, except provide threaded ends for

heating hot water service.

2. Steel Pipe Sizes, 2-1/2 Inches and Smaller: Threaded or grooved end.

3. Steel Pipe Sizes, 3 Inches and Larger: Grooved end or flanged.

3.7 APPLICATION SCHEDULE

A. General Application: Use gate, ball, and butterfly valves for shutoff duty; globe, ball, and butterfly

for throttling duty. Refer to piping system Specification Sections for specific valve applications and

arrangements.

B. Domestic Water Systems: Use the following valve types:

1. Gate Valves: Class 125, bronze or cast-iron body to suit piping system.

2. Ball Valves: Class 150, 600-psi CWP, with stem extension.

3. Plug Valves: Neoprene-faced plug, Buna N packing.

4. Globe Valves: Class 125, bronze or cast-iron body to suit piping system, and bronze or teflon

disc.

5. Bronze Swing Check: Class 125, with rubber seat.

C. Hydronic Water Systems: Use the following valve types:

1. Gate Valves: Class 125, bronze body; or Class 125, cast-iron body.

2. Ball Valves: Class 150, 600-psi CWP, with memory stop.

3. Plug Valves: Buna N packing.

4. Globe Valves: Class 125, bronze body with bronze or teflon disc; or Class 125, cast-iron body.

5. Butterfly Valves: Aluminum bronze, epoxy-coated ductile iron disc; EPDM sleeve and stem

seals.

6. Check Valves: Class 125, bronze body swing check with rubber seat; Class 125, cast-iron body

swing check.

3.8 ADJUSTING

A. Adjust or replace packing after piping systems have been tested and put into service, but before final

adjusting and balancing. Replace valves if leak persists.

END OF SECTION


35

23 05 29HANGERS AND SUPPORTS

FOR HVAC PIPING AND EQUIPMENT

36



February 27, 2107

SECTION 23 05 29 - HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART l -GENERAL

1.1 SUMMARY

A. This Section includes hangers and supports for mechanical systems piping and equipment.

1.2 REFERENCES


1. American Society of Mechanical Engineers (AMSE):

a. B 18.10 - Track Bolts and Nuts.

b. B31.9 - Building Services Piping.

c. Boiler and Pressure Vessel Code.


a. A36/ A36M - Structural Steel.

b. A183 - Carbon Steel Track Bolts and Nuts.

c. A 780 - Repair of Damaged Hot-Dipped Galvanized Coatings.

d. C 150 - Portland Cement.

e. Cl 107 - Packaged Dry, Hydraulic-Cement Grout (Nonshrink).f. F844 - Washers, Steel, Plain (Flat), Unhardened for General Use.

3. American Welding Society (AWS):

a. D 1.1 - Structural Welding Code - Steel.

4. Factory Mutual (FM).

5. Manufacturers Standardization Society (MSS):

a. SP-58 - Pipe Hangers and Supports - Materials, Design, and Manufacture.

b. SP-69 - Pipe Hangers and Supports - Selection and Application.

c. SP-89 - Pipe Hangers and Supports - Fabrication and Installation Practices.

d. SP-90 - Guidelines on Terminology for Pipe Hangers and Supports.

6. National Fire Protection Association (NFPA):

a. 13 - Installation of Sprinkler Systems.

b. 70 - National Electric Code.

7. Steel Structures Painting Council (SSPC):

a. P A-1 - Shop, Field, and Maintenance Painting.

8. Underwriters Laboratories (UL).

1.3 DEFINITIONS: Terminology used in this Section is defined in MSS SP-90.

1.4 SUB MITT ALS


Mechanical.

1. Product data including installation instructions for each type of support and hanger.

2. Submit pipe hanger and support schedule showing manufacturer's figure number, size, location,

and features for each required pipe hanger and support.

3. Welder certificates, signed by Contractor, certifying that welders comply with requirements

specified under "Quality Assurance" Article.

HANGERS AND SUPPORTS FOR HV AC PIPING AND EQUIPMENT 23 05 29 - 1

37



4. Shop drawings for each type of support and hanger indicating dimensions, weights, required

clearances, and methods of component assembly.

5. Licensed Engineer's hanger and support installation report specified in the "Field Quality

Control" Article.


A. Qualify welding processes and welding operators in accordance with A WS D 1.1.

1. Certify that each welder has satisfactorily passed A WS qualification tests for welding processes

involved and, if pertinent, has undergone recertification.

B. Qualify welding processes and welding operators in accordance with ASME "Boiler and Pressure

Vessel Code", Section IX, "Welding and Brazing Qualifications."

C. Listing and Labeling: Provide hangers and supports that are listed and labeled as defined in NFP A

70, Article 100.

1. UL and FM Compliance: Hangers, supports, and components shall be listed and labeled by UL

and FM where used for fire protection piping systems.

2. Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing Laboratory"

(NRTL) as defined in OSHA Regulation 1910.7.

PART 2 - PRODUCTS

2.1 MANUFACTURED UNITS

A. Hangers and Support Components: Factory fabricated according to MSS SP-58.

1. Components shall have galvanized coatings where installed for piping and equipment that will

not have field-applied finish.

2. Pipe attachments shall have nonmetallic coating for electrolytic protection where attachments

are in direct contact with copper tubing.

B. Thermal Hanger Shield Inserts: 100 psi average compressive strength, waterproofed calcium

silicate, and encased with a sheet metal shield. Insert and shield shall cover entire circumference of

the pipe and shall be of length indicated by manufacturer for pipe size and thickness of insulation.

C. Mechanical-Anchor Fasteners: Insert-type attachments with pull-out and shear capacities

appropriate for supported loads and building materials where used. Fasteners for fire protection

systems include UL listing and FM approval.

2.2 MISCELLANEOUS MATERIALS

A. Structural Steel: ASTM A36/ A36M, steel plates, shapes, and bars, black and galvanized.

B. Bolts and Nuts: ASME B18.10 or ASTM A183, steel, hex-head, track bolts and nuts.

C. Washers: ASTM F844, steel, plain, flat washers.


38



D. Grout: ASTM Cl 107, Grade B, nonshrink, nonmetallic.

February 27, 2107

1. Characteristics include post-hardening, volume-adjusting, dry hydraulic-cement-type grout that

is nonstaining, noncorrosive, nongaseous and is recommended for both interior and exterior

applications.

2. Design Mix: 5000-psi, 28-day compressive strength.

3. Water: Potable.

4. Packaging: Premixed and factory-packaged.

PART 3 - EXECUTION

3.1 HANGER AND SUPPORT APPLICATIONS

A. Specific hanger requirements are specified in the Section specifying the equipment and systems.

B. Comply with MSS SP-69 for pipe hanger selections and applications that are not specified in piping

specification Sections.

3.2 HANGER AND SUPPORT INSTALLATION

A. General: Comply with MSS SP-69 and SP-89. Install hangers, supports, clamps, and attachments as

required to properly support piping from building structure.

B. Arrange for grouping of parallel runs of horizontal piping supported together on field-fabricated,

heavy-duty trapeze hangers where possible.

C. Install supports with maximum spacings complying with MSS SP-69.

D. Where piping of various sizes are supported together by trapeze hangers, space hangers for smallest

pipe size or install intermediate supports for smaller diameter pipe as specified above for individual

pipe hangers.

E. The following figure types given in Figure 1 of MSS SP-69 will not be acceptable: Types 5, 6, 7, 9,

10, 11, 12, 16, 17,20,23,and 25.

F. Install concrete inserts in new construction prior to placing concrete.

G. Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and other

accessones.

H. Install hangers and supports to allow controlled movement of piping system to permit freedom of

movement between pipe anchors and to facilitate action of expansion joints, expansion loops,

expansion bends, and similar units.

I. Load Distribution: Install hangers and supports so that piping live and dead loading and stresses

from movement will not be transmitted to connected equipment.


39


February 27, 2107

J. Insulated Piping: Comply with the following installation requirements:

1. Clamps: Attach clamps, including spacers (if any), to piping with clamps projecting through

insulation; do not exceed pipe stresses allowed by ASME B3 l .9.

2. Saddles: Install protection saddles MSS Type 39 where insulation without vapor barrier is

indicated. Fill interior voids with segments of insulation that match adjoining pipe insulation.

3. Shields: Install MSS Type 40 protective shields on cold piping with vapor barrier. Shields span

an arc of 180° (3.1 rad) and have dimensions in inches not less than that shown on Table 5 of SP

69.

4. Insert Material: Length at least as long as the protective shield.

5. Thermal Hanger Shields: Install with insulation of same thickness as piping.

3.3 METAL FABRICATION

A. Cut, drill, and fit miscellaneous metal fabrications for pipe and equipment supports.

B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be shop

welded because of shipping size limitations.

C. Field Welding: Comply with AWS Dl.1 procedures for manual shielded metal-arc welding,

appearance and quality of welds methods used in correcting welding work, and the following:

4. Use materials and methods that minimize distortion and develop strength and corrosion

resistance of base metals.

5. Obtain fusion without undercut or overlap.

6. Remove welding flux immediately.

7. Finish welds at exposed connections so that no roughness shows after finishing and so

that contours of welded surfaces match adjacent contours.

3.4 ADJUSTING

A. Hanger Adjustment: Adjust hangers to distribute loads equally on attachments and to achieve

indicated slope of pipe.

3.5 PAINTING

A. Touching-Up: Clean field welds and abraded areas of shop paint and paint exposed areas

immediately after erection of hangers and supports. Use same material as used for shop painting.

Comply with SSPC-PAl requirements for touch-up of field-painted surfaces.

1. Apply by brush or spray to provide a minimum dry film thickness of 2.0 mils.

B. Galvanized surfaces: Clean welds, bolted connections, and abraded areas, and apply galvanizing

repair paint to comply with ASTM A 780.

3.6 FIELD QUALITY CONTROL

A. Licensed Engineer's Report: Prepare hanger and support installation report. Include seal and

signature of Registered Engineer, licensed in Texas.

END OF SECTION

HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT 23 05 29 - 4

40

23 05 48VIBRATION AND SEISMIC

CONTROLS FOR HVAC PIPING AND EQUIPMENT

41



February 27, 2107

SECTION 23 05 48 - VIBRATION AND SEISMIC CONTROLS FOR HV AC PIPING & EQUIPMENT

PART I -GENERAL

I.I SUMMARY

A. Provide vibration isolators for mechanical equipment.

1.2 APPLICABLE STANDARDS

A. American Society for Testing and Materials (ASTM): A36/ A36M - Structural Steel.

1.3 SUBMITT ALSA. General: Submit following Section 23 05 00 - Common Work Results for Mechanical.

1. Product Data: Indicate types, styles, materials, and finishes for each type of isolator specified.Include load deflection curves.


A. Professional Engineer Qualifications: A professional engineer who is currently registered in Texasand who is experienced in providing engineering services of the kind indicated. Engineeringservices are defined as those performed for installations of vibration isolation bases that are similarto those indicated for this Project in material, design, and extent.

1.5 PROJECT CONDITIONS

A. Project seismic zone is 0.

B. Building Importance Factor: 1.0.

1.6 COO DINA TION

A. Coordinate layout and installation of vibration isolation and seismic-restraint devices with otherconstruction that penetrates ceilings or is supported by them, including light fixtures, HV ACequipment, fire-suppression-system components, and partition assemblies.

B. Coordinate size and location of concrete housekeeping and vibration isolation bases. Cast anchorbolt inserts into base. Concrete, reinforcement, and formwork requirements are specified inDivision 03 Sections.

C. Coordinate installation of equipment supports, and roof penetrations. These items are specified inDivision 07.

VIBRATION AND SEISMIC CONTROLS FOR HV AC PIPING & EQUIPMENT 23 05 48 - 1

42



PART 2 - PRODUCTS

2.1 MANUFACTURERS

February 27, 2107

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Ace Mountings Co., Inc.

2. Amber/Booth Company, Inc.

3. Isolation Technology, Inc.

4. Mason Industries, Inc.

5. Rubatex Corp.

6. Vibration Eliminator Co., Inc.

7. Vibration Isolation Co., Inc.

2.2 VIBRATION ISOLA TORS

A. Isolator Pads: Oil and water resistant and factory cut to sizes that match requirements of the

equipment supported.

1. Rubber Isolator Pads: Elastomer (neoprene or silicone) arranged in single or multiple layers and

molded with a nonslip pattern and steel base plates of sufficient stiffness to provide uniform

loading over the pad area.

2. Fiberglass or Cork Isolator Pads: Molded cork or glass fiber not less than 1 inch thick and

precompressed through 10 compression cycles at 3 times the rated load.

3. Load Range: From 10 to 50 psi and a deflection not less than 0.08 inch per 1 inch of thickness.

Do not exceed a loading of 50 psi.

B. Rubber Isolator Mounts: Double-deflection type, with molded, oil-resistant rubber or neoprene

isolator elements, with encapsulated top- and base plates. Factory-drilled and tapped top plate for

bolted equipment mounting. Factory-drilled baseplate for bolted connection to structure. Color

code to indicate capacity range.

C. Spring Isolators: Freestanding, laterally stable, open-spring-type isolators.

1. Outside Spring Diameter: Not less than 80% of the compressed height of the spring at rated

load.

2. Minimum Additional Travel: 50% of the required deflection at rated load.

3. Lateral Stiffness: More than 1.2 times the rated vertical stiffness.

4. Overload Capacity: Support 200% of rated load, fully compressed, without deformation or

failure.

5. Base Plates: Factory drilled for bolting to structure and bonded to a 1/4-inch-thick, rubber

isolator pad attached to the baseplate underside. Size base plates to limit floor loading to 100

psi.

6. Top Plates: Provide threaded studs for fastening and leveling equipment.


43


7. Finishes: Manufacturer's standard corrosive-resistant finish.

February 27, 2107

D. Restrained Spring Isolators: Vertically restrained, freestanding, laterally stable, steel open-spring

type isolators.

1. Housing: Welded steel with resilient vertical limit stops to prevent spring extension due to wind

loads or when weight is removed. Factory-drilled baseplate for bolting to structure and bonded

to a 1/4-inch- thick, rubber isolator pad attached to the baseplate underside. Provide adjustable

equipment mounting and leveling bolt.


load.


4. Lateral Stiffness: More than 0.8 times the rated vertical stiffness.

5. Overload Capacity: Support 200% of rated load, fully compressed, without deformation or

failure.

6. Finishes: Baked enamel for metal components on isolators for interior use. Hot-dip galvanized

for metal components on isolators for exterior use.

E. Rubber Hangers: Double-deflection type, with molded, oil-resistant rubber or neoprene isolator

elements bonded to formed-steel housings with threaded connections for hanger rods. Color-code to

indicate capacity range.

F. Spring Hangers: Combination spring and elastomeric hanger with coil spring and elastomeric insert

in compression.

1. Frame: Formed steel, fabricated for connection to threaded rods and to allow for 30° of angular

hanger rod misalignment without binding or reducing isolation efficiency.


load.


4. Elastomeric Element: Molded, oil-resistant rubber or neoprene.

5. Finishes: Baked enamel for metal components. Color-code to indicate capacity range.

G. Expansion Compensation: Flexible pipe connectors with stainless steel inner hose and braided

exterior sleeve. Flexible spherical expansion joints shall employ peroxide cured EPDM in the

covers, liners and kevlar tire cord. Frictioning solid steel rings shall be used within the raised face

rubber flanged ends to prevent pullouts.


44



PART 3 - EXECUTION

3.1 INSTALLATION

February 27, 2107

A. Install and anchor vibration- and sound-control products according to manufacturer's written

instructions.

B. Anchor interior mounts, isolators, and hangers to vibration isolation bases. Bolt isolator base plates

to structural floors.

C. Anchor exterior mounts, isolators, and hangers, to vibration isolation bases. Bolt isolator base

plates to structural supports.

D. Install pipe connectors at connections for equipment supported on vibration isolators.

3.2 ADJUSTING AND CLEANING

A. Adjust limit stops on restrained spring isolators to mount equipment at normal operating height.

After equipment installation is complete, adjust limit stops so they are out of contact during normal

operations.

B. Adjust thrust restraints for a maximum of 1/4 inch of movement at start and stop.

END OF SECTION

VIERA TION AND SEISMIC CONTROLS FOR HV AC PIPING & EQUIPMENT 23 05 48 - 4

45

23 05 93TESTING, ADJUSTING,

AND BALANCING FOR HVAC

46



February 27, 2107

SECTION 23 05 93 - TESTING, ADruSTING, AND BALANCING FOR HV AC

PART 1 -GENERAL

1.1 SUMMARY

A. This Section includes testing, adjusting, and balancing HV AC systems to produce design objectives,

including the following:

1. Balancing airflow and water flow within distribution systems, including submains, branches,

and terminals, to indicated quantities according to specified tolerances.

2. Adjusting total HVAC systems to provide indicated quantities.

3. Measuring electrical performance of HV AC equipment.

4. Setting quantitative performance of HV AC equipment.

5. Verifying that automatic control devices are functioning properly.

6. Reporting results of the activities and procedures specified in this Section.

E. All testing and balancing will be contracted separately by the owner and shall not be included in the

base bid. The owner will use this specification to bid out to third parties under a separate contract.

1.2 REFERENCES


1. Air Movement and Control Association (AMCA):

a. 201 - Fans and Systems.

2. Associated Air Balance Council (AABC):

a. National Standards for Testing and Balancing Heating, Ventilating, and Air Conditioning

Systems.

3. National Environmental Balancing Bureau (NEEB):

a. Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems:

Section II, "Requirement Instrumentation for NEEB Certification."

4. Sheet Metal and Air Conditioning Contractor's National Association (SMACNA):

a. HV AC Systems - Duct Design.

b. HV AC Systems -Testing, Adjusting, and Balancing.

1.3 DEFINITIONS

A. Adjust: To regulate fluid flow rate and air patterns at the terminal equipment, such as to reduce fan

speed or adjust a damper.

E. Balance: To proportion flows within the distribution system, including submains, branches, and

terminals, according to design quantities.

C. Draft: A current of air, when referring to localized effect caused by one or more factors of high air

velocity, low ambient temperature, or direction of airflow, whereby more heat is withdrawn from a

person's skin than is normally dissipated.

D. Procedure: An approach to and execution of a sequence of work operations to yield repeatable results.

E. Report Forms: Test data sheets for recording test data in logical order.

TESTING, ADJUSTING, AND BALANCING FOR HVAC 23 05 93 -1

47



February 2 7, 2107

F. Static Head: The pressure due to the weight of the fluid above the point of measurement. In a closed

system, static head is equal on both sides of the pump.

G. Suction Head: The height of fluid surface above the centerline of the pump on the suction side.

H. System Effect: A phenomenon that can create undesired or unpredicted conditions that cause reduced

capacities in all or part of a system.

I. System Effect Factors: Allowances used to calculate a reduction of the performance ratings of a fan

when installed under conditions different from those presented when the fan was performance tested.

J. Terminal: A point where the controlled medium, such as fluid or energy, enters or leaves the

distribution system.

K. Test: A procedure to determine quantitative performance of a system or equipment.

L. Testing, Adjusting, and Balancing Agent: The entity responsible for performing and reporting the

testing, adjusting, and balancing procedures.

M. AMCA: Air Movement and Control Association.

N. NEBB: National Environmental Balancing Bureau.

0. SMACNA: Sheet Metal and Air Conditioning Contractors' National Association.

1.4 SUBMITT ALS

A. Submit the following in accordance with Section 23 05 00 - Common Work Results for Mechanical.

1. Quality-Assurance Submittals: Within 30 days from the Contractor's Notice to Proceed, submit

2 copies of evidence that the testing, adjusting, and balancing Agent and this Project's testing,adjusting, and balancing team members meet the qualifications specified in the "Quality

Assurance" Article below.

2. Contract Documents Examination Report: Within 45 days from the Contractor's Notice to

Proceed, submit 2 copies of the Contract Documents review report as specified in Part 3 of this

Section.

3. HV AC Duct and Hydronic Piping System Layout: Prepare a schematic layout of each HV AC

system and hydronic piping system. Include all dampers, regulating devices, terminal units,

supply outlets, return and exhaust inlets, air handlers, pumps, chillers in the schematic layout.

4. Strategies and Procedures Plan: Within 60 days from the Contractor's Notice to Proceed, submit

2 copies of the testing, adjusting, and balancing strategies and step-by-step procedures as

specified in Part 3 "Preparation" Article below. Include a complete set of report forms intended

for use on this Project.

5. Certified Testing, Adjusting, and Balancing Reports: Submit 2 copies ofreports prepared, as

specified in this Section, on approved forms certified by the testing, adjusting, and balancing

Agent. Include the schematic layouts as prepared in Item 3 as background reference.

6. Sample Report Forms: Submit 2 sets of sample testing, adjusting, and balancing report forms.

7. Warranty: Submit 2 copies of special warranty specified in the "Warranty" Article below.

TESTING, ADJUSTING, AND BALANCING FOR HV AC 23 05 93 - 2

48




February 27, 2107

A. Agent Qualifications: Engage a testing, adjusting, and balancing agent certified by NEBB.

B. Testing, Adjusting, and Balancing Conference: Meet with the Angleton Recreation Center, City of

Angleton 's and the Engineer's representatives on approval of the testing, adjusting, and balancing

strategies and procedures plan to develop a mutual understanding of the details. Ensure the

participation of testing, adjusting, and balancing team members, equipment manufacturers' authorized

service representatives, HVAC controls Installer, and other support personnel. Provide 7 days'

advance notice of scheduled meeting time and location.

1. Agenda Items: Include at least the following:

a. Submittal distribution requirements.

b. Contract Documents examination report.

c. Testing, adjusting, and balancing plan.

d. Work schedule and Project site access requirements.

e. Coordination and cooperation of trades and subcontractors.f. Coordination of documentation and communication flow.

C. Certification of Testing, Adjusting, and Balancing Reports: Certify the testing, adjusting, and

balancing field data reports. This certification includes the following:

1. Review field data reports to validate accuracy of data and to prepare certified testing, adjusting,

and balancing reports.

2. Certify that the testing, adjusting, and balancing team complied with the approved testing,

adjusting, and balancing plan and the procedures specified and referenced in this Specification.

D. Testing, Adjusting, and Balancing Reports: Use standard forms from NEBB's "Procedural Standards

for Testing, Adjusting, and Balancing of Environmental Systems" or SMACNA's "HV AC Systems-

Testing, Adjusting, and Balancing."

E. Instrumentation Type, Quantity, and Accuracy: As described in NEBB's "Procedural Standards forTesting, Adjusting, and Balancing of Environmental Systems," Section II, "Required Instrumentation

for NEBB Certification."

F. Instrumentation Calibration: Calibrate instruments at least every 6 months or more frequently if

required by the instrument manufacturer.

1.6 PROJECT CONDITIONS

A. Partial Angleton Recreation Center, City of Angleton Occupancy: The Angleton Recreation Center,

City of Angleton may occupy completed areas of the building before Substantial Completion.

Cooperate with the Angleton Recreation Center, City of Angleton during testing, adjusting, and

balancing operations to minimize conflicts with the Angleton Recreation Center, City of Angleton 's

operations.

1.7 COORDINATION

A. Coordinate the efforts of factory-authorized service representatives for systems and equipment,

HV AC controls installers, and other mechanics to operate HV AC systems and equipment to support

and assist testing, adjusting, and balancing activities.

TESTING, ADJUSTING, AND BALANCING FOR HVAC 23 05 93 - 3

49



February 27, 2107

B. Notice: Provide 7 days' advance notice for each test. Include scheduled test dates and times.

C. Perform testing, adjusting, and balancing after leakage and pressure tests on air and water distribution

systems have been satisfactorily completed.

1.8 WARRANTY

A. General Warranty: The national project performance guarantee specified in this Article shall not

deprive the Angleton Recreation Center, City of Angleton of other rights the Angleton Recreation

Center, City of Angleton may have under other provisions of the Contract Documents and shall be in

addition to, and run concurrent with, other warranties made by the Contractor under requirements of

the Contract Documents.

B. Special Guarantee: Provide a guarantee on NEEB forms stating that NEEB will assist in completing

the requirements of the Contract Documents if the testing, adjusting, and balancing Agent fails to

comply with the Contract Documents. Guarantee includes the following provisions:

1. The certified Agent has tested and balanced systems according to the Contract Documents.

2. Systems are balanced to optimum performance capabilities within design and installation limits.

PART 2 - PRODUCTS

Not Used

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine Contract Documents to become familiar with project requirements and to discover

conditions in systems' designs that may preclude proper testing, adjusting, and balancing of systems

and equipment.

1. Contract Documents are defined in the General and Supplementary Conditions of the Contract.

2. Verify that balancing devices, such as test ports, gage cocks, thermometer wells, flow-control

devices, balancing valves and fittings, and manual volume dampers, are required by the Contract

Documents. Verify that quantities and locations of these balancing devices are accessible and

appropriate for effective balancing and for efficient system and equipment operation.

B. Prepare HV AC and Hydronic Piping Layout: Prepare a schematic layout of each HV AC system and

hydronic piping system. Include all dampers, regulating devices, terminal units, supply outlets,

return and exhaust inlets, air handlers, pumps, chillers in the schematic layout.

C. Examine approved submittal data of HV AC systems and equipment.

D. Examine project record documents described in Division O 1.

E. Examine Architect's and Engineer's design data, including HV AC system descriptions, statements of

design assumptions for environmental conditions and systems' output, and statements of philosophies

and assumptions about HV AC system and equipment controls.


50


February 27, 2107

F. Examine equipment performance data, including fan and pump curves. Relate performance data toproject conditions and requirements, including system effects that can create undesired orunpredicted conditions that cause reduced capacities in all or part of a system. Calculate systemeffect factors to reduce the performance ratings of HV AC equipment when installed under conditionsdifferent from those presented when the equipment was performance tested at the factory. Tocalculate system effects for air systems, use tables and charts found in AMCA 201, "Fans andSystems," Sections 7 through 1 O; or in SMACNA's "HV AC Systems--Duct Design," Sections 5 and6. Compare this data with the design data and installed conditions.

G. Examine system and equipment installations to verify that they are complete and that testing,cleaning, adjusting, and commissioning specified in individual Specification Sections have beenperformed.

H. Examine system and equipment test reports.

I. Examine HV AC system and equipment installations to verify that indicated balancing devices, suchas test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, andmanual volume dampers, are properly installed, and their locations are accessible and appropriate foreffective balancing and for efficient system and equipment operation.

J. Examine systems for functional deficiencies that cannot be corrected by adjusting and balancing.

K. Examine air-handling equipment to ensure clean filters have been installed, bearings are greased,belts are aligned and tight, and equipment with functioning controls is ready for operation.

L. Examine terminal units to verify that they are accessible and their controls are connected andfunctioning.

M. Examine strainers for clean screens and proper perforations.

N. Examine 3-way valves for proper installation for their intended function of diverting or mixing fluidflows.

0. Examine heat-transfer coils for correct piping connections and for clean and straight fins.

P. Examine equipment for installation and for properly operating safety interlocks and controls.

Q. Examine automatic temperature system components to verify the following:1. Dampers, valves, and other controlled devices operate by the intended controller.2. Dampers and valves are in the position indicated by the controller.3. Integrity of valves and dampers for free and full operation and for tightness of fully closed and

fully open positions.4. Automatic modulating and shutoff valves, including 2-way valves and 3-way mixing and

diverting valves, are properly connected.5. Thermostats and humidistats are located to avoid adverse effects of sunlight, drafts, and cold

walls.6. Sensors are located to sense only the intended conditions.7. Sequence of operation for control modes is according to the Contract Documents.


51

Angleton Recreation Center HY AC Replacement


February 27, 2107

8. Controller set points are set at design values. Observe and record system reactions to changes in

conditions. Record default set points if different from design values.

9. Interlocked systems are operating.

10. Changeover from heating to cooling mode occurs according to design values.

R. Report deficiencies discovered before and during performance of testing, adjusting, and balancing

procedures.

3.2 PREPARATION

A. Prepare a testing, adjusting, and balancing plan that includes strategies and step-by-step procedures.

B. Complete system readiness checks and prepare system readiness reports. Verify the following:

1. Permanent electrical power wiring is complete.

2. Hydronic systems are filled, clean, and free of air.

3. Automatic temperature-control systems are operational.

4. Equipment and duct access doors are securely closed.

5. Balance, smoke, and fire dampers are open.

6. Isolating and balancing valves are open and control valves are operational.

7. Ceilings are installed in critical areas where air-pattern adjustments are required and access to

balancing devices is provided.

8. Windows and doors can be closed so design conditions for system operations can be met.

3.3 GENERAL TESTING AND BALANCING PROCEDURES

A. Perform testing and balancing procedures on each system according to the procedures contained in

NEBB's "Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems" and

this Section.

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum

extent necessary to allow adequate performance of procedures. After testing and balancing, close

probe holes and patch insulation with new materials identical to those removed. Restore vapor barrier

and finish according to the insulation Specifications for this Project.

C. Mark equipment settings with paint or other suitable, permanent identification material, including

damper-control positions, valve indicators, fan-speed-control levers, and similar controls and devices,

to show final settings.

3.4 FUNDAMENTAL AIR SYSTEMS' BALANCING PROCEDURES

A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended

testing procedures. Crosscheck the summation of required outlet volumes with required fan volumes.

B. Prepare schematic diagrams of systems' "as-built" duct layouts.

C. For variable-air-volume systems, develop a plan to simulate diversity.

D. Determine the best locations in main and branch ducts for accurate duct airflow measurements.


52



February 27, 2107

E. Check the airflow patterns from the outside-air louvers and dampers and the return- and exhaust-air

dampers, through the supply-fan discharge and mixing dampers.

F. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

G. Verify that motor starters are equipped with properly sized thermal protection.

H. Check dampers for proper position to achieve desired airflow path.

I. Check for airflow blockages.

J. Check condensate drains for proper connections and functioning.

K. Check for proper sealing of air-handling unit components.

3.5 VARIABLE-AIR-VOLUME SYSTEMS' PROCEDURES

A. Variable-Air-Volume Systems: After the fan systems have been adjusted, adjust the variable-air

volume systems as follows:

1. Set outside-air dampers at minimum, and return-and exhaust-air dampers at a position that

simulates full-cooling load.

2. Select the terminal unit that is most critical to the supply-fan airflow and static pressure.

Measure static pressure. Adjust system static pressure so the entering static pressure for the

critical terminal unit is not less than the sum of the terminal unit manufacturer's recommended

minimum inlet static pressure plus the static pressure needed to overcome terminal-unit

discharge duct losses.

3. Measure total system airflow. Adjust to within 10% of design airflow.

4. Set terminal units at maximum airflow and adjust controller or regulator to deliver the designed

maximum airflow. Use the terminal unit manufacturer's written instructions to make this

adjustment. When total airflow is correct, balance the air outlets downstream from terminal

units as described for constant-volume air systems.

5. Set terminal units at minimum airflow and adjust controller or regulator to deliver the designed

minimum airflow. Check air outlets for a proportional reduction in airflow as described for

constant-volume air systems.

a. If air outlets are out of balance at minimum airflow, report the condition but leave the

outlets balanced for maximum airflow.

6. Remeasure the return airflow to the fan while operating at maximum return airflow and

minimum outside airflow. Adjust the fan and balance the return-air ducts and inlets as

described for constant-volume air systems.

7. Measure static pressure at the most critical terminal unit and adjust the static-pressure controller

at the main supply-air sensing station to ensure adequate static pressure is maintained at the

most critical unit.

8. Record the final fan performance data.

B. Set system at maximum design airflow by setting the required number of terminal units at minimum

airflow. Select the reduced airflow terminal units so they are distributed evenly among the branch

ducts.


53



February 27, 2107

C. Adjust supply fan to maximum design airflow with the variable-airflow controller set at maximumairflow.

D. Set terminal units being tested at full-airflow condition.

E. Adjust terminal units starting at the supply-fan end of the system and continuing progressively to theend of the system. Adjust inlet dampers of each terminal unit to design airflow. When total airflow iscorrect, balance the air outlets downstream from terminal units as described for constant-volume airsystems.

F. Adjust terminal units for minimum airflow.

G. Measure static pressure at the sensor.

H. Measure the return airflow to the fan while operating at maximum return airflow and minimumoutside airflow. Adjust the fan and balance the return-air ducts and inlets as described for constantvolume air systems.

3.6 ROOFTOP UNITS

B. Rooftop Units Test Reports: For rooftop units, include the following:1. Unit Data: Include the following:

a. Unit identification.b. Location.c. Make and type.d. Model number and unit size.e. Manufacturer's serial number.f. Unit arrangement and class.g. Discharge arrangement.h. Sheave make, size in inches (mm), and bore.1. Sheave dimensions, center-to-center and amount of adjustments in inches (mm).

J. Number of belts, make, and size.k. Number of filters, type and size.

2. Motor Data: Include the following:a. Make and frame type and size.b. Horsepower and rpm.c. Volts, phase, and hertz.d. Full-load amperage and service factor.e. Sheave make, size in inches (mm), and bore.f. Sheave dimensions, center-to-center and amount of adjustments in inches (mm).

3. Test Data: Include design and actual values for the following:a. Total airflow rate in cfm (Lis).b. Total system static pressure in inches wg (Pa.)c. Fan rpm.d. Discharge static pressure in inches wg (Pa.)e. Filter static-pressure differential in inches wg (Pa.).f. Cooling coil static-pressure differential in inches wg (Pa).g. Heating coil static-pressure differential in inches wg (Pa.).h. Outside airflow in cfm (Lis).


54



i. Return airflow in cfm (Lis).

J. Outside-air damper position.

k. Return-air damper position.

I. Vortex damper position.

B. Apparatus-Coil Test Reports: For apparatus coils, include the following:

1. Coil Data: Include the following:

a. System identification.

b. Location.

c. Coil type.

d. Number of rows.

e. Fin spacing in fins per inch (mm o.c. ).

f. Make and model number.

g. Face area in sq. ft. (sq. m).

h. Tube size in NPS (DN).

1. Tube and fin materials.

j. Circuiting arrangement.

2. Test Data: Include design and actual values for the following:

a. Airflow rate in din (Lis).

b. Average face velocity in fpm (mis).

c. Air pressure drop in inches wg (Pa).

d. Outside-air, wet-and dry-bulb temperatures in °F (0C).

e. Return-air, wet-and dry-bulb temperatures in °F (0C).

f. Entering-air, wet-and dry-bulb temperatures in °F (0C).

g. Leaving-air, wet-and dry-bulb temperatures in °F (°C).

h. Water flow rate in gpm (Lis).

1. Water pressure differential in feet of head or psig (kPa).

J. Entering-water temperature in °F (0C).

k. Leaving-water temperature in °F (0C).

I. Refrigerant expansion valve and refrigerant types.

m. Refrigerant suction pressure in psig (kPa).

n. Refrigerant suction temperature in °F (0C).

3.7 TEMPERATURE TESTING

February 27, 2107

A During testing, adjusting, and balancing, report need for adjustment in temperature regulation within

the automatic temperature-control system.

B. Measure indoor wet- and dry-bulb temperatures every other hour for a period of 2 successive 8-hour

days, in each separately controlled zone, to prove correctness of final temperature settings. Measure

when the building or zone is occupied.

C. Measure outside-air, wet- and dry-bulb temperatures.

3.8 TEMPERATURE-CONTROL VERIFICATION

A Verify that controllers are calibrated and commissioned.

B. Check transmitter and controller locations and note conditions that would adversely affect control

functions.


55



February 27, 2107

C. Record controller settings and note variances between set points and actual measurements.

D. Verify operation of limiting controllers (i.e., high- and low-temperature controllers).

E. Verify free travel and proper operation of control devices such as damper and valve operators.

F. Verify sequence of operation of control devices. Note air pressures and device positions and correlate

with airflow and water-flow measurements. Note the speed of response to input changes.

G. Confirm interaction of electrically operated switch transducers.

H. Confirm interaction of interlock and lockout systems.

I. Verify main control supply-air pressure and observe compressor and dryer operations.

J. Record voltages of power supply and controller output. Determine if the system operates on a

grounded or nongrounded power supply.

K. Note operation of electric actuators using spring return for proper fail-safe operations.

3.9 TOLERANCES

A. Set HY AC system airflow and water flow rates within the following tolerances:

1. Supply, Return, and Exhaust Fans: Plus 5 to plus 10%.

2. Air Outlets and Inlets: 0 to plus 10%.

3.10 REPORTING

A. Initial Construction-Phase Report: Based on examination of the Contract Documents as specified in

"Examination" Article above, prepare a report on the adequacy of design for systems' balancing

devices. Recommend changes and additions to systems' balancing devices to facilitate proper

performance measuring and balancing. Recommend changes and additions to HY AC systems and

general construction to allow access for performance measuring and balancing devices.

B. Status Reports: As Work progresses, prepare reports to describe completed procedures, procedures in

progress, and scheduled procedures. Include a list of deficiencies and problems found in systems

being tested and balanced. Prepare a separate report for each system and each building floor for

systems serving multiple floors.

3.11 FINAL REPORT

A. General: Typewritten, or computer printout in letter-quality font, on standard bond paper, in 3-ring

binder, tabulated and divided into sections by tested and balanced systems.

B. Include a certification sheet in front of binder signed and sealed by the certified testing and balancing

engineer.

1. Include a list of the instruments used for procedures, along with proof of calibration.

TESTING, ADJUSTING, AND BALANCING FOR HY AC 23 05 93 - 10

56


February 27, 2107

C. Final Report Contents: In addition to the certified field report data, include the following:

1. Fan curves.

2. Manufacturers' test data.

3. Field test reports prepared by system and equipment installers.

4. Other information relative to equipment performance, but do not include approved Shop

Drawings and Product Data.

5. HVAC duct system layout.

D. General Report Data: In addition to the form titles and entries, include the following data in the final

report, as applicable:

1. Title page.

2. Name and address of testing, adjusting, and balancing Agent.

3. Project name.

4. Project location.

5. Architect's name and address.

6. Engineer's name and address.

7. Contractor's name and address.

8. Report date.

9. Signature of testing, adjusting, and balancing Agent who certifies the report.

10. Summary of contents, including the following:

a. Design versus final performance.

b. Notable characteristics of systems.

c. Description of system operation sequence if it varies from the Contract Documents.

11. Nomenclature sheets for each item of equipment.

12. Data for terminal units, including manufacturer, type size, and fittings.

13. Notes to explain why certain final data in the body of reports vary from design values.

14. Test conditions for fans performance forms, including the following:

a. Settings for outside-, return-, and exhaust-air dampers.

b. Conditions of filters.

c. Cooling coil, wet- and dry-bulb conditions.

d. Fan drive settings, including settings and percentage of maximum pitch diameter.

e. Inlet vane settings for variable-air-volume systems.

f. Settings for supply-air, static-pressure controller.

g. Other system operating conditions that affect performance.

E. System Diagrams: Include schematic layouts of air distribution systems. Present with single-line

diagrams and include the following:

1. Quantities of outside, supply, return, and exhaust airflows.

2. Duct, outlet, and inlet sizes.

3. Terminal units.

4. Balancing stations.

F. Air-Handling Unit Test Reports: For air-handling units with coils, include the following:

a. Unit identification.

b. Location.

c. Make and type.

d. Model number and unit size.

e. Manufacturer's serial number.

f. Unit arrangement and class.

g. Discharge arrangement.


57



February 27, 2107

h. Sheave make, size in inches and bore.1. Sheave dimensions, center-to-center and amount of adjustments in inches.J. Number of belts, make, and size.k. Number of filters, type, and size.

1. Motor Data: Include the following:a. Make and frame type and size.b. Horsepower and rpm.c. Volts, phase, and hertz.d. Full-load amperage and service factor.e. Sheave make, size in inches, and bore.f. Sheave dimensions, center-to-center and amount of adjustments in inches (mm).

3. Test Data: Include design and actual values for the following.a. Total airflow rate in cfm.b. Total system static pressure in inches wg.c. Fan rpm.d. Discharge static pressure in inches wg.e. Filter static-pressure differential in inches wg.f. Cooling coil static-pressure differential in inches wg.g. Outside airflow in cfm.h. Return airflow in cfm.1. Outside-air damper position.J. Return-air damper position.

G. Round, Flat-Oval, and Rectangular Duct Traverse Reports: Include a diagram with a gridrepresenting the duct cross-section and record the following:

1. Report Data: Include the following:a. System and air-handling unit number.b. Location and zone.c. Traverse air temperature in °F (0C).d. Duct static pressure in inches wg.e. Duct size in inches.f. Duct area in sq. ft. (sq. m).g. Design airflow rate in cfm.h. Design velocity in fpm (mis).1. Actual airflow rate in cfm.J. Actual average velocity in fpm (mis).k. Barometric pressure in psig.


58



3.12 ADDITIONAL TESTS

February 27, 2107

A. Within 90 days of completing testing, adjusting, and balancing, perfonn additional testing and

balancing to verify that balanced conditions are being maintained throughout and to correct unusual

conditions.

B. Seasonal Periods: If initial testing, adjusting, and balancing procedures were not performed during

near-peak summer and winter conditions, perform additional inspections, testing, and adjusting during

near-peak summer and winter conditions.

END OF SECTION


59

23 07 00MECHANICALINSULATION

60



February 2 7, 2107

SECTION 23 07 00 - MECHANICAL INSULATION

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes pipe, duct, and equipment insulation.

1.2 REFERENCES

A. Applicable Standards:1 . American Society for Testing and Materials (ASTM):

a. B209 - Aluminum and Aluminum-Alloy Sheet and Plate.b. C 195 - Mineral Fiber Thermal Insulating Cement.c. C 196 - Expanded or Exfoliated Vermiculite Thermal Insulating Cement.d. C449 - Mineral Fiber Hydraulic-Setting Thermal Insulating and Finishing Cement.e. C533 - Calcium Silicate Block and Pipe Thermal Insulation.f. C534 - Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular

Form.g. C54 7 - Mineral Fiber Preformed Pipe Insulation.h. C552 - Cellular Glass Block and Pipe Thermal Insulation.1. C553 - Mineral Fiber Blanket and Felt Insulation (Industrial Type).j. C612 - Mineral Fiber Block and Board Thermal Insulation.k. C921 - Determining the Properties of Jacketing Materials for Thermal Insulation.1. E84 - Test Method for Surface Burning Characteristics of Building Materials.m. E96 - Test Methods for Water Vapor Transmission of Materials.

2. Military Specifications:a. MIL-A-3316C - Adhesives, Fire-Resistant, Thermal Insulation.b. MIL-C-20079H - Cloth, Glass, Tape, Textile Glass, and Thread, Glass and Wire

Reinforced Glass.

1.3 DEFINITIONS

A. Hot Surfaces: Normal operating temperatures of 1 00°F or higher.

B. Dual Temperature Surfaces: Normal operating temperatures that vary from hot to cold.

C. Cold Surfaces: Normal operating temperatures less than 75°F.

D. Thermal Resistivity: "r-values" represent the reciprocal of thermal conductivity (k-value). Thermalconductivity is the rate of heat flow through a homogeneous material exactly 1 inch thick. Thermalresistivities are expressed by the temperature difference in degrees F between two exposed facesrequired to cause one Btu to flow through one square foot of material, in one hour, at a given meantemperature.

E. Density: Is expressed in pound per cubic feet.

MECHANICAL INSULATION 23 07 00 - 1

61



1.4 SUBMITT ALS


HVAC.

1. Product data for each type of mechanical insulation identifying the k-value, thickness, and

accessories.


A. Fire Performance Characteristics: Conform to the following characteristics for insulation including

facings, cements, and adhesives, when tested according to ASTM E84, by UL or other testing or

inspecting organization acceptable to the authority having jurisdiction. Label insulation with

appropriate markings of testing laboratory.

1. Interior Insulation: Flame spread rating of 25 or less and a smoke developed rating of 50 or less.

2. Exterior Insulation: Flame spread rating of 75 or less and a smoke developed rating of 150 or

less.


A. Schedule insulation application after testing and painting of piping and duct systems.

PART 2 -PRODUCTS

2.1 MANUFACTURERS

A. Subject to compliance with requirements, provide products by one of the following:

1. Glass Fiber:

a. CertainTeed Corporation.

b. Knauf Fiberglass GmbH.

c. Manville.

d. Owens-Coming Fiberglas Corporation.

e. USG Interiors, Inc. - Thermafiber Division.

2. Flexible Elastomeric Cellular:

a. Armstrong World Industries, Inc.

b. Halstead Industrial Products.

C. IMCOA.

d. Rubatex Corporation.

B. All piping and duct insulation shall comply with IECC-2010.

2.2 GLASS FIBER

A. Material: Inorganic glass fibers, bonded with a thermosetting resin.

B. Jacket: All-purpose, factory-applied, laminated glass-fiber-reinforced, flame-retardant kraft paper

and aluminum foil having self-sealing lap.

C. R-Value for all insulation shall meet IECC-2010.


62



February 27, 2107

D. Board: ASTM C612, Class 2, semi-rigid jacketed board.1. Thermal Conductivity: 0.26 average maximum, at 75

°

F mean temperature.

2. Density: 12 pcf average maximum.

E. Blanket: ASTM C553, Type II, Class F-1,jacketed flexible blankets.

1. Thermal Conductivity: 0.32 average maximum, at 75°F mean temperature.

F. Preformed Pipe Insulation: ASTM C547, Class 1, rigid pipe insulation,jacketed.1. Thermal Conductivity: 0.26 average maximum at 75°F mean temperature.

2. Density: 10 average maximum.

G. Adhesive: Produced under the UL Classification and Follow-up service.

1. Type: Non-flammable, solvent-based.

2. Service Temperature Range: -20° to+ 180°F.

H. Vapor Barrier Coating: Waterproof coating recommended by insulation manufacturer for outside

service.

2.3 FLEXIBLE ELASTOMERIC CELLULAR

A. Material: Flexible expanded closed-cell structure with smooth skin on both sides.

1. Tubular Materials: ASTM C534, Type I.

2. Sheet Materials: ASTM C534, Type II.

B. Thermal Conductivity: 0.30 average maximum at 75°F.

C. Coating: Water based latex enamel coating recommended by insulation manufacturer.

2.4 SELF-ADHERING JACKETS

A. Self-adhering waterproofing membrane consisting of laminated reflective high density aluminum

foil, high density waterproof polymer films and 40 mil rubberized adhesive asphalt waterproofing

compound with release paper.

2.5 ADHESIVES

A. Flexible Elastomeric Cellular Insulation Adhesive: Solvent-based, contact adhesive recommended

by insulation manufacturer.

B. Lagging Adhesive: MIL-A-3316C, non-flammable adhesive in the following Classes and Grades.1. Class 1, Grade A for bonding glass cloth and tape to unfaced glass fiber insulation, sealing

edges of glass fiber insulation, and bonding lagging cloth to unfaced glass fiber insulation.

2. Class 2, Grade A for bonding glass fiber insulation to metal surfaces.

2.6 ACCESSORIES AND ATTACHMENTS

A. Glass Cloth and Tape: Woven glass fiber fabrics, plain weave, presized a minimum of 8 ounces

per square yard.

1. Tape Width: 4 inches.

2. Cloth Standard: MIL-C-20079H, Type I.

3. Tape Standard: MIL-C-20079H, Type IL


63


B. Bands: 3/4-inch wide, in one of the following materials compatible with jacket:

1. Stainless Steel: Type 304, 0.020-inch thick.

2. G alvanized Steel: 0.005-inch thick.

3. Aluminum: 0.007-inch thick.

4. Brass: 0.0 I-inch thick.

5. Nickel-Copper Alloy: 0.005-inch thick.

February 27, 2107

C. Wire: 14-gage nickel copper alloy, 16-gage, soft-annealed stainless steel, or 16-gage, soft

annealed galvanized steel.

D. Comer Angles: 28-gage, 1" x 1" aluminum, adhered to 2" x 2" kraft paper.

E. Anchor Pins: Capable of supporting 20 pounds each. Provide anchor pins and speed washers of

sizes and diameters as recommended by the manufacturer for insulation type and thickness.

2.7 SEALING COMPOUNDS

A. Vapor Barrier Compound: Water-based, fire-resistive composition.

1. Water Vapor Permeance: 0.08 perm maximum.

2. Temperature Range: -20°

to 180°F.

B. Weatherproof Sealant: Flexible-elastomer-based, vapor barrier sealant designed to seal metal

joints.

1. Water Vapor Permeance: 0.02 perm maximum.

2. Temperature Range: -50°

to 250°F.

3. Color: Aluminum.

PART 3 -EXECUTION

3.1 PREPARATION

A. Surface Preparation: Clean, dry, and remove foreign materials such as rust, scale, and dirt.

B. Mix insulating cements with clean potable water. Mix insulating cements contacting stainless

steel surfaces with demineralized water.

1. Follow cement manufacturer's printed instructions for mixing and portions.

3.2 INSTALLATION, GENERAL

A. Refer to schedules at the end of this Section for materials, forms, jackets, and thicknesses required

for each mechanical system.

B. Select accessories compatible with materials suitable for the service. Select accessories that do

not corrode, soften, or otherwise attack the insulation or jacket in either the wet or dry state.

C. Install vapor barriers on insulated pipe, ducts, and equipment having surface operating

temperatures below 60°F.

D. Apply insulation material, accessories, and finishes according to the manufacturer's printed

instructions.


64



February 27, 2107

E. Install insulation with smooth, straight, and even surfaces.

F. Seal joints and seams to maintain vapor barrier on insulation requiring a vapor barrier.

G. Seal penetrations for hangers, supports, anchors, and other projections in insulation requiring a

vapor barrier.

H. Seal Ends: Except for flexible elastomeric insulation, taper ends at 45° angle and seal with

lagging adhesive. Cut ends of flexible elastomeric cellular insulation square and seal with

adhesive.

I. Apply adhesives and coatings at manufacturer's recommended coverage-per-gallon rate.

J. Keep insulation materials dry during application and finishing.

K. Items Not Insulated: Unless otherwise indicated do not apply insulation to the following systems,

materials, and equipment:

1. Factory-insulated flexible ducts.

2. Factory-insulated plenums, casings, terminal boxes, and filter boxes and sections.

3. Flexible connectors for ducts and pipes.

4. Vibration control devices.

5. Testing laboratory labels and stamps.

6. Nameplates and data plates.

7. Access panels and doors in air distribution systems.

8. Sanitary drainage and vent piping.

9. Chrome-plated pipes and fittings, except for plumbing fixtures for the disabled.

10. Piping specialties including air chambers, unions, strainers, check valves, and flow

regulators.

3.3 FLEXIBLE ELASTOMERIC CELLULAR PIPE INSULATION INSTALLATION

A. Slip insulation on the pipe before making connections wherever possible. Seal joints with

adhesive. Where the slip-on technique is not possible, cut one side longitudinally and apply to the

pipe. Seal seams and joints with adhesive.

B. Valves, Fittings, and Flanges: Cut insulation segments from pipe or sheet insulation. Bond to

valve, fitting, and flange and seal joints with adhesive.

1. Miter cut materials to cover soldered elbows and tees.

2. Fabricate sleeve fitting covers from flexible elastomeric cellular insulation for screwed

valves, fittings, and specialties. Miter cut materials. Overlap adjoining pipe insulation.

3.4 DUCT INSULATION

A. Install block and board insulation as follows:

1. Adhesive and Band Attachment: Secure block and board insulation tight and smooth with at

least 50% coverage of adhesive. Install bands spaced 12 inches apart. Protect insulation

under bands and at exterior comers with metal comer angles. Fill joints, seams, and chipped

edges with vapor barrier compound.


65



February 27, 2107

2. Speed Washers Attachment: Secure insulation tight and smooth with speed washers and

welded pins. Space anchor pins 18 inches apart each way and 3 inches from insulation joints.

Apply vapor barrier coating compound to insulation in contact, open joints, breaks,

punctures, and voids in insulation.

B. Blanket Insulation: Install tight and smooth. Secure to ducts having long sides or diameters as

follows:

1. Smaller than 24 Inches: Bonding adhesive applied in 6-inch-wide transverse strips on 12-

inch centers.

2. 24 Inches and Larger: Anchor pins spaced 12 inches apart each way. Apply bonding

adhesive to prevent sagging of the insulation.

3. Overlap joints 3 inches.

4. Seal joints, breaks, and punctures with vapor barrier compound.

3.5 JACKETS

A. Install metal jacket with 2-inch overlap at longitudinal and butt joints. Overlap longitudinal joints

to shed water. Seal butt joints with weatherproof sealant recommended by insulation

manufacturer. Secure jacket with stainless-steel draw bands 12 inches on center and at butt joints.

3.6 FINISHES

A. Paint finished insulation as specified.

B. Flexible Elastomeric Cellular Insulation: After adhesive has fully cured, apply two coats of

protective coating to exposed insulation.

3.7 APPLICATIONS

A. General: Materials and thicknesses are specified in schedules at the end of this Section.

B. Interior, Exposed Piping Systems: Unless otherwise indicated, insulate the following piping

systems:

1. Domestic cold water.

2. Domestic hot water.

3. Sanitary drains for fixtures accessible to the disabled.

4. Refrigerant suction.

5. Chilled water piping (35°

to 99°

F).

6. Hydronic piping (100°

to 250°F).

7. Condensing drain piping.

C. Interior, Concealed Piping Systems: Unless otherwise indicated, insulate the following piping

systems:

1. Domestic cold water.

2. Domestic hot water.

3. Refrigerant suction.

4. Chilled water piping (35° to 55

°F).

5. Hydronic piping (100° to 250°F).

6. Condensate drain piping.

7. Roof drain pipe and horizontal runs of storm water drain including elbows.


66



D. Exterior Piping Systems: Unless otherwise indicated, insulate the following piping systems:1. Cold water piping in the utility tunnel.2. Cold and hot domestic water piping across the tug drive.3. Hydronic piping across the tug drive and in the utility tunnel.

E. Duct Systems: Unless otherwise indicated, insulate the following duct system:1. Interior concealed supply and outside air ductwork.2. Interior exposed supply and outside air ductwork.3. Interior exposed and concealed supply fans, air handling unit casings and outside air

plenums.

3.8 PIPE INSULATION SCHEDULES

A. Abbreviations used in the following schedules include:1. Field-Applied Jackets: A - Aluminum.2. Pipe Sizes: NPS - Nominal Pipe Size.3. R-value and thickness shall comply with IECC-2010.

EXTERIOR CONDENSATE DRAIN*

PIPE SIZES (NPS)

ALL SIZES

MATERIALS

FLEXIBLE ELASTOMERIC

*Insulate to 12" beyond unit perimeter.

THICKNESS IN INCHES

3/4

3.9 DUCT SYSTEMS INSULATION SCHEDULE

A. R-Value and thickness shall comply with IECC-2010.

VAPOR BARRIER REQ'D

NO

FIELDAPPLIED JACKET

YES

INTERIOR CONCEALED HV AC SUPPLY AND RETURN DUCTS AND PLENUMS

MATERIALS

GLASS FIBER

FORM

BLANKET OR

BOARD

MECHANICAL INSULATION

THICKNESS IN INCHES

2

VAPOR BARRIER REQ'D

YES

FIELDAPPLIED JACKET

NONE

23 07 00 - 7

67



February 27, 2107

EXTERIOR EXPOSED AND CONCEALED HV AC SUPPLY

AND RETURN DUCTS AND PLENUMS

MATERIALS FORM THICKNESS

IN

INCHES

GLASS FIBER BLANKET OR BOARD 3

*Insulation shall be sandwiched in a double wall duct installation.

END OF SECTION

MECHANICAL INSULATION

VAPOR FIELD-

BARRIER APPLIED

REQ'D JACKET

NO YES*

23 07 00 - 8

68

23 09 00INSTRUMENTATION AND

CONTROL FOR HVAC

69

(



February 27, 2107

SECTION 23 09 00 - INSTRUMENTATION AND CONTROL FOR HVAC

PART I -GENERAL

1.1 EXECUTIVE SUMMARY

A. The Control Systems shall be bid and contracted to the Mechanical Contractor.

B. All DDC controllers and control system components as described herein shall be provided orfurnished by an Angleton Recreation Center, City of Angleton approved CS manufacturer andintegrated into the respective, existing CMCS and shall be capable of receiving global programming

modifications from the CMCS. Approved manufacturers are limited to BACnet Native Controllers.

C. All VFD' s for rooftop units shall be provided, installed and wired by the equipment manufacturer.

D. All Automation Starters shall be provided under this Section as detailed in 23 09 00 3.2U.Automation Starters shall be installed and wired shall be by the Electrical Contractor.

E. CS design for increased energy efficiency shall be given high priority.

F. Humidity control will take priority over temperature control when rooms are vacant.

G. The CS shall not use reheat for humidity control except as a last resort. Controlling space temperatures to+/- 0.5 degrees at the expense of effective humidity control is unacceptable.

H. All temperature, humidity and CO2 sensors shall be located across the room from the unit.

1.2 DESCRIPTION

A. General: The control system (CS) shall consist of a high-speed, peer-to-peer network of DDC control

lers and a web-based operator interface. Management level Ethernet network speed shall be 1 Gbpsand Automation level MSTP network speed shall be 76.8 Kbps. Each mechanical system and buildingfloor plan shall be depicted on an operator workstation by point-and-click graphics. The preferred CSshall be reliable, easy to operate, easy to maintain, energy efficient and affordable.

B. Purpose: The purpose of the CS is to operate a building's HVAC system in a manner that provides effective temperature and humidity control while minimizing energy consumption. This means a con

trol strategy that employs reheat for humidity control only as a last resort.C. A single web server with a network interface card shall gather data from this system and generate web

pages accessible through a conventional web browser from all PC's connected to the network.D. Operators shall be able to perform all normal operator functions through the web browser interface

and all graphical/data representations must appear identical, whether the user is on site or viewing via

the web at a remote location.E. Contractor shall provide it's newest web-based software and software updates required for this pro

ject. Additionally the installing contractor shall provide all computer related components (BAS web

server - reference specifications for hardware requirements) for the new software platform to functionin a peer-to-peer environment.

F. Contractor shall provide all necessary hardware and software to facilitate an open architecture systemwhere the BACnet Building Communication protocol can be integrated with the City's SCADA System. All the rooftop units and HV AC equipment control points shall be monitored and controlled bythe SCADA System.

INSTRUMENTATION AND CONTROL FOR HVAC 23 09 00 - 1

70



February 27, 2107

G. The system shall directly control HV AC equipment as specified in Sequences of Operation. Each

zone controller shall provide occupied and unoccupied modes of operation by individual zone.

H. Furnish energy conservation features such as optimal start and stop, night setback, request-based logic, and demand level adjustment of setpoints.

I. System shall use the BACnet protocol for communication to the operator workstation or web serverand for communication between control modules. Schedules, setpoints, trends, and alarms specified

in Section 23 09 00 Sequences of Operation shall be BACnet objects.J. System shall be provided with the Utility reporting software and equipment as specified in the se

quence of operations.

K. Contractor shall provide as part of bid documentation a listing of specification subsection numbers

and paragraphs with which they DO NOT COMPLY. Any deviation of any kind from this specifica

tion must be CLEARLY addressed in the contractors bid proposal documents allowing the Angleton

Recreation Center, City of Angleton/engineer to evaluate all deviations from the desired system features detailed in this specification.

1.3 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions

and Division 1 Specification Sections, apply to this Section.

B. Division 23 for mechanical equipment.

C. Division 26 for electrical, lighting, and fire alarm equipment.

D. The Angleton Recreation Center, City of Angleton MEP Design Guidelines.

E. Angleton Recreation Center, City of Angleton BACnet Six Digit Device Instance and IP AddressAllocation Master.

1.4 SCOPE OF WORK

A. Provide a complete Control System (CS) turnkey installation as detailed in this section of these speci

fications. The CS shall be a native BACnet based system that is stand alone in all aspects except that

it shall be remotely monitored and controlled from the Central Monitoring and Control System(CMCS) utilizing the BACnet protocol to be designated by Angleton Recreation Center, City of Angleton. The operator's workstation, all building controllers, application controllers, and all in

put/output devices shall communicate using the protocols and network standards as defined by

ANSI/ ASHRAE Standard 135-2016, BACnet or latest revision. All workstations and controllers, in

cluding unitary controllers, shall be native BACnet devices conforming to the latest version of theASHRAE BACnet standard. System as specified in these documents shall include any and all soft

ware and hardware to support at least 50 simultaneous users. All contractors, subcontractors and ven

dors are to strictly adhere to the Design Guidelines. Prior written approval from Angleton Recreation

Center, City of Angleton is required for any deviation from these guidelines.

B. The CS shall comprise the following components:

1. Communication Control Panels (CCP), based on BACnet standards to interface the CS to theCMCS.

2. Unitary Controllers (UC), based on BACnet standards.

3. CS Automation Level Network, base on BACnet standards.4. Field instrumentation.

5. Automatic dampers (not furnished as part of a unit) and valves.


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6. Actuators for automatic valves and dampers.7. Communication, sequences of operation and optimization software.

February 27, 2107

8. All power supplies, interlocking and control relays, equipment enclosures, conduit, junction andmounting boxes, cabling and other components, materials and services required for a completedand fully operational turnkey CS installation meeting these specifications.

9. All software necessary for servicing CS controllers and other CS equipment.

C. Provide the following support for the CS facilities:I. Warranty and service during the warranty period.2. Submittals, samples and record documentation.3. Comprehensive commissioning and testing of the CS.4. Training services for the Angleton Recreation Center, City of Angleton and Operators.5. Coordination with other site contractors.6. Reporting to the General Contractor, the Architect and Engineer to ensure a well coordinated and

timely execution of the Work.

D. The CS shall be remotely monitored by the CMCS using BACnet over IP through the existingCMCS. The newest version of server and web software shall be provided.

E. Furnish the following devices for installation by Division 23:I. Temperature sensing thermowells.2. Automatic dampers.3. Pipe tap for insertion flowmeters.4. Tapping, piping and 3/8" ball valve, fully installed for all wet differential pressure sensors.5. Motorized control valves.6. Water pressure sensors and switches with isolation valves.7. Companion flanges for inline pipe mounted equipment.8. Furnish UC and damper actuators for terminal units and fan coil units to the unit manufacturer for

factory mounting.

The Mechanical Contractor shall provide access doors, where required, for all control system components to ensure proper maintenance access.

F. 120 Vac power shall be provided by Division 26 at locations indicated on the Division 26 drawings.Review and verify that these locations are adequate for the proposed CS. Extend power from theselocations to all devices, as necessary.

1.5 ABBREVIATIONS

AD

ANSI ASHRAE BIBB BBMD

cs

CCP

CMCS

CPU DDC ECPAP FAS

Automatic Damper

American National Standards Institute American Society of Heating, Refrigerating and Air-Conditioning Engineers BACnet Interoperability Building Block BACnet Broadcast Management Device

Remote school/building Control System

Communications Control Panel

Central Monitoring and Control System

Central Processing Unit Direct Digital Control Expandable Central Plant Application Panel Fire Alarm System


72



FCU

FPTU

FSD

HMI

HVAC

JCT

IEEE

1/0 IP

ISA

ISO

1/0 LAN

LCD

LED

MSTP

NEC NEMA

OIW

PC

PICS

PIM

POT

RAM

ROM

RFI

RH

SD

SVGA

UC

UDP

UL UV

VAV

VDU WAN

Fan Coil Unit

Fan Powered Terminal Unit

Fire / Smoke Damper

Human Machine Interface Heating, Ventilating and Air Conditioning

Information Communication Technology

Institute of Electrical and Electronics Engineers

Input/Output

Internet Protocol

Instrumentation Society of America

International Standards Organization

Input/Output

Local Area Network

Liquid Crystal Display Light Emitting Diode

Master Slave or Token Passing

National Electrical Code

National Electrical Manufacturers Association

Operator Interface Workstation

Personal Computer

Protocol Implementation Conformance Statement

Process Interface Module

Portable Operator Terminal

Random Access Memory

Read Only Memory

Radio Frequency Interference

Relative Humidity

Smoke Damper

Super Video Graphics Adapter

Unitary Controller

User Datagram Protocol

Underwriters Laboratory Unit Ventilator

Variable Air Volume

Video Display Unit Wide Area Network

1.6 WORK OF THE CS CONTRACTOR

February 27, 2107

A. The CS Contractor shall provide the mapping, storage, and reporting of the CS monitoring and con

trol objects into the CMCS and the preparation of data presentation for the CMCS ManagementLevel Network. Provide all necessary documentation, BIBB information, as required for the inte

gration of the CS monitoring and control functions into the CMCS.B. The CS Contractor shall assure that device instance, BBMD and UDP assignment and the network

design adheres to the Angleton Recreation Center, City of Angleton BACnet Device Instance andIP Address Allocation Master design standard. CS system shall communicate BACnet Annex J to

the CMCS and support network speeds of 100 Mbps. CS system design shall support thermograph

floor plans, standard alarms and consist of standard configurations for typical systems. The CS

Contractor shall provide the following:


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February 2 7, 2107

1. Provide and configure in the form of standard BACnet values, the following alarms to

be displayed by the CMCS.

a. Filter runtime alarm

b. Fan failure

c. Smoke alarm

d. Space temperature out of range

e. Supply air temperature out of range

f. Loss of communication alarm

g. HVAC equipment common alarm (i.e.: if any point in a piece of

equipment goes into alarm, an HV AC common alarm shall occur)h. Any other alarms as specified elsewhere herein

2. Provide standard BACnet configuration and access for the following to be displayed by

the CMCS using standard BACnet objects and values.

a. Schedules

b. Trendlogsc. Alarms

d. Any other displays as specified elsewhere herein

3. Provide the following data to be displayed and integrated into the BACnet CMCS.

a. Space temperature deviation from setpoint

b. Current controlling setpoint for each control loopc. HV AC equipment common alarm (i.e.: if any point in a piece of

equipment goes into alarm, an HV AC common alarm shall occur)

4. All CS system devices shall comply with BACnet Annex L Standardized Device

Profiles for communication to the CMCS BACnet Operator Workstation (B-OWS).• Building Controller (B-BC)• Advanced Application Controllers (B-AAC)• Application Specific Controllers (B-ASC)• Smart Sensor (B-SS)• Smart Actuators (B-ACT)

5. The CS system shall be designed to provide BACnet data communication per standard

BACnet Interoperability Blocks (BIBBs)(Annex K, ASHRAE Standard 135-2016

BACnet). The CS system shall communicate with the CMCS to share data, alarm andnotify events, schedule, trend, manage devices and manage the network per the

following BIBBs as a minimum.

Data Sharing

DS-RP-A

DS-RP-B

DS-RPM-A DS-RPM-B DS-WP-A

DS-WP-B

DS-WPM-A DS-WPM-B DS-COV-B

Read Property-Client User of Data From Device

Read Property- Device Providing Data Read Property Multiple-Client User of Data From Device

Read Property Multiple- Device Providing Data Write Property-Client User of Data From Device

Write Property- Device Providing Data

Write Property-Client User of Data From Device Write Property- Device Providing Data Change of Value- Device Providing Data


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Alarm and Event Notification

AE-N-A Notification-Client User of Data From Device

AE-ACK-A Acknowledge-Client User of Data From Device

AE-INFO-A Information-Client User of Data From Device

AE-ESUM-A Event Enrollment Summary-Client User of Data From Device

Scheduling

SCHED-A Schedule-Client User of Data From Device

Trending

T-VMT-A

T-ATR-AViewing and Modifying Trends-Client User of Data From Device

Automated Trend Retrieval-Client User of Data From Device

Device and Network Management

DM-DDB-A Dynamic Device Binding-Client User of Data From Device

DM-DDB-B Dynamic Device Binding - Device Providing Data

DM-DOB-A Dynamic Object Binding -Client User of Data From Device

DM-DOB-B Dynamic Object Binding - Device Providing Data DM-DCC-A Device Communication Control-Client User of Data From Device

DM-DCC-B Device Communication Control - Device Providing Data

DM-OCD-A Write Property-Client User of Data From Device

DM-TS-A Time Synchronization- Client User of Data From Device

DM-UTC-A UTC Time Synchronization- Client User of Data From Device DM-RD-A Reinitialize Device- Client User of Data From Device

DM-BR-A

DM-PT-A

DM-PT-B

DM-R-A

NM-CE-A

Backup and Restore- Client User of Data From Device

Private Transfer- Client User of Data From Device Private Transfer- Device Providing Data

Restore- Client User of Data From Device

Connection Establishment- Client User of Data From Device

6. All standardized BACnet objects and features shall be fully implemented including

but not limited to the following:

• Enter full alphanumeric descriptions of all object descriptions, object names, pointsand devices in each object, value and point.

• Each hardware and pseudo point and value in the CS shall be fully BACnet imple

mented.• All alarms shall have full alphanumeric descriptors .•

7. CS Contractor shall provide a complete and certified report of all CS network and data

information. The report shall provide the following as a minimum.• All object descriptors and object names.• All device and network addresses and descriptors.• All hardware point addresses and descriptors.• All analog and binary values and descriptors.• All trendlogs and descriptors.• All alarms and descriptors.


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February 27, 2107

8. Controllers for each type of controlled equipment shall be configured to one common

standard. Therefore, controller point use is consistent and will allow for consistent

graphic creation and presentation to the operator.

9. Provide review of the proposed CS, CCP, UC and Automation Level Network forthe compatibility and integration capabilities at the shop drawing and submittal stagethe project. Report to Angleton Recreation Center, City of Angleton on any concerns relating to

compatibility or integration of the CS into the CMCS.

10. Integrate the CS into the CMCS to include but not limited to the following:

a. Point monitoring and control

b. Trending

c. Alarm configuration and annunciation

d. Reporting of real time and historical datae. Equipment scheduling

11. Provide the necessary integration, graphics and interface commissioning of the

CS BACnet data into the BACnet CMCS.

12. Create a graphic for each specific piece of equipment, its associated

sequence of operation graphic and all menu penetration/summary graphics. This

equipment shall include as it pertains to the project the following:a. Dedicated Outside Air Handling Units

b. Rooftop Units

c. Split Systemsd. Exhaust Fans

e. Lighting Points

f. Misc. Points

13. Provide (1) dynamic thermographic floor plan for every 16,000 square feet offloor space. This floor plan shall allow an operator to immediately know which zones

are deviating from the current setpoint based on color changes on a zone by zonebasis. The CS Contractor shall be provided Mechanical and Electrical AutoCaddrawings at no additional cost to create floor plans. Displaying floor plans with only the

numerical temperature values without dynamic color graphics on the front-end is

unacceptable. All thermographs shall be visible via web interface as well as on the

LAN.

14. Provide (1) mechanical equipment floor plan for every 4,000 square

feet of floor space. This drawing is a second layer that enables the operator to view:a. Mechanical equipment layout including piping and ductwork

b. Equipment location

c. Wall sensors that display the current space temperature

d. VA V boxes and associated space temperature sensors

e. Room numbers, etc.


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February 27, 2107

15. Provide capability for global modification of user definable parameters standard to the operation

of the system. Global modification is defined as the mass adjustment of user definable parameters

across a defined group, area, facility, campus, or network. Parameters shall included, but not be

limited to temperature setpoint (rooftop units), equipment start/stop, equipment status, valve out

put signal, vfd speed control signal, and damper position signal. User shall be able to lock the de

finable parameter to a set value, or adjust a setpoint to an operator adjustable value. This function

shall be accomplished through the standard graphical user interface/workstation and is to be se

lectively applicable by the user to all controllers on the network, all controllers in a specific facility or all controllers in a specific zone within a specific facility.

1.7 CONTRACTOR QUALIFICATIONS

1.8

1.9

A. The CS Contractor shall:1. Have a local staff in the Angleton Recreation Center, City of Angleton, Texas area of trained

personnel capable of giving instructions and providing routine and emergency maintenance on the

CS, all components and software/firmware and all other elements of the CS.2. Have a proven record of experience in the supply and installation of equivalent BACnet systems

over a minimum period of five years. Provide documentation of at least three and no more thansix projects of equal or greater size and complexity, if so requested by the General Contractor.

3. Be a factory certified representative for the native BACnet CS manufacturer for design, installa

tion, and maintenance of the proposed systems.4. Have comprehensive local service, training and support facilities for the total CS as provided.

5. Maintain local, or have approved local contracted access to, supplies of essential expendable

parts.

B. Subject to their complete compliance with these Contract Documents, the CS Contractor shall be a

manufacturer or an approved representative of one of the following CS companies representing thefollowing manufacturers:

A.

B.

C. D.

E.

F.

G.

H.

A.

I. Alerton

2. Automated Logic3. Johnson Controls

RELATED WORK IN OTHER SECTIONS

Refer to Division O and Division 1 for Allowances and related contractual requirements. Refer to Section 23 05 00 for General Mechanical Provisions

Refer to Section 26 05 00 for General Electrical Provisions Chiller manufacturer shall provide, install and wire a BACnet interface to the chiller.

Division 23 shall provide all conduit and wiring for 120 volts and above, such as power

to control panels, 120v valve operators, VA V terminal units, power supplies, etc ..

Switchgear manufacturer shall provide Modbus interface to BAS.

Fire alarm manufacturer shall provide contacts within 18 inches of Division 23 09 00 control panels

for monitoring only of specified fire alarm devices, zones, etc.

CRAC unit manufacturer shall provide Modbus RTU interface to BAS.

ELECTRICAL POWER PROVISIONS

l 20Vac power shall be provided under a separate contract by the Electrical Contractor. Power fed

from the normal power circuits will be provided at the following locations:

Power fed from the emergency power circuits will be provided at the following locations:


77

Angleton Recreation Center HY AC Replacement


February 27, 2107

B. Normal power shall be provided to the UC serving fan powered terminal units via the control trans

former provided with the unit.

C. Provide the necessary low voltage power to the UC provided that will serve VA V terminal units fromthe power sources indicated above. Provide step down transformers within panel enclosures. Provide

all necessary fuses and circuit protection devices.

D. Power shall be provided to the dampers interlocked to fans via the control transformer provided withthe motor starter.

E. All components of the CS shall be powered from the sources above. Provide final terminations fromthe locations indicated on the Division 23 Drawings.

F. The CS Contractor shall provide any additional power that is required as part of this contract. This

shall include all conduit, cabling, circuit breakers, interfaces, etc.

1.10 SHOP DRAWINGS

A. The following information shall be included on the cover page for each shop drawing and equipment

documentation submittal:

1. Project name.

2. Date.

3. Submittal number and re-submittal number, as appropriate.4. Name and address of Consultant.

5. Name and address of General Contractor.

6. Name and address of CS Contractor.

7. Name and address of supplier or vendor, as appropriate.

8. Name of manufacturer.9. Reference to the applicable Specification Section by name and number.

B. Shop drawings shall be CAD generated, minimum plot size of 8.5 x 11 inches. Drawings shall include diagrams, mounting instructions, installation procedures, equipment details and software de

scriptions for all aspects of the system to be installed. At minimum, the shop drawings shall include:

1. CS topology schematic.2. CCP, UC and other panel layouts, including floor plan location and interconnection drawings.

3. Field instrumentation locations on floor plan drawings.

4. Schematic of systems indicating instrumentation locations.5. Installation details.

6. Schedule of cabling including details of proposed cable types.

C. Equipment submittals shall include design, performance and installation details for all aspects of the

system to be installed. At minimum, the equipment documentation submittals shall include:

1. Equipment technical data sheets with mounting and installation details.2. The documentation shall include comprehensive and complete details of the BIBB and Automa

tion Level documentation including address, associated controller type, etc. as required and for

the interface to the CMCS.

3. Details of networks/communications equipment, cabling and protocols proposed.4. Software specifications and descriptions including operating sequences.

5. Field sensor and instrumentation specification sheets.

6. Damper and actuator specification sheets.7. Valves and actuator specification sheets.


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February 27, 2107

8. Details of piping and/or tubing proposed.

1.11 O&M MANUAL CONTENTS AND FORMAT

A. Provide O&M Manual with full information to allow matching products under futureContracts to products under this contract, and to allow Angleton Recreation Center, City of Angleton

to operate, maintain and repair (for user-serviceable aspects) products, including trade names, modelor type Numbers, color dimensions and other physical characteristics.

B. Format:1. Produce on 8-1/2 x 11-inch pages, and bind in 3-ring/D binders with durable

plastic covers.2. Label binder covers with printed title "OPERATION AND MAINTENANCE

MANUAL", tit1e of project, and subject matter and "Number_ of_" of binderWhen multiple binders are required.

3. Separate each "Part" with substantial dividers tabbed and titled by Part number.

C. Contents:1. Table of Contents for each volume, naming each Part.2. Part 1: Directory with name, address and telephone number of Designer,

Contractor and Subcontractors and Suppliers for each Project Manual section.3. Part 2: Operation and maintenance instructions, arranged by Project Manual

Section number where practical and where not, by system. Include:a. For finish materials, maintenance instructions prepared by manufacturers

including recommended cleaning methods and materials and specialprecautions identifying detrimental agents.

b. HV AC, plumbing and electrical products, prepared by productmanufacturer, including:( 1) Product design criteria, functions, normal operating characteristic and limiting conditions.(2) Installation, alignment, adjustment, checking instructions and troubleshooting guide.(3) Operating instructions for start-up, normal operation, regulation and control, normal

shutdown and emergency shutdown.( 4) Spare parts list for operating products, prepared by manufacturers including detailed

drawings giving location of each maintainable part, lists of spares recommended for userservice inventory and nearest source of in-stock spares.

(5) Outline, cross-section and assembly drawings; engineering data and wiring diagrams(6) Test data and performance curves.

1.12 RECORD DOCUMENTATION

A. Provide Operators' Manuals with, at minimum, the following information:1. Details of all features and functions available to the Operators.2. Details of all alarm, diagnostic, error and other messages. Detail the Operator action to be taken

for each instance.3. Detail special programs provided and provide a complete programming instruction manual. Detail

operation of all software applications.4. Detailed list of the database for all installed devices.5. Details of all data base management functions and features.6. All details and descriptions shall be in a step by step format such that an Operator/ Manager

would be able to undertake the respective actions solely on the basis of information provided inthe manuals and drawings.


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B. Provide hardware manuals which shall include, at minimum, the following:

February 27, 2107

1. Specifications, maintenance requirements and installation requirements for all hardware compo

nents.2. Record drawings and schedules of the completed installation including location of devices,

mounting details, cabling details.3. Operating sequences and interlocks.

4. Names and addresses of spare parts suppliers.

C. Record drawings shall be CAD generated and shall include, at minimum, the following:

1. Details required by the shop drawings.2. Final locations and point ID for each monitored and controlled device.

D. In additional to the required hardcopies, provide a CD with all of the record documentation in PDFformat and a CD(s) containing backup copies of all installed software and graphics.

E. Online As-built documentation. Contractor shall provide digital replications of as-builts that shall be

accessible from each equipment graphic controlled or monitored by the BAS. Electronic documents

which shall be accessible include:

1. Module Drawing.a. Provide an electronic wiring diagram of each control module ( as shown in submittal docu

mentation). Diagram shall display wiring schematic and terminations to end devices.b. Diagram shall display each input and output terminals and label those

that are used for the control application.c. Dynamic live data shall be displayed for each control point.

d. Diagram shall display module type/name and network address.e. The module drawing shall be a separate graphic that is selectable at the

applicable location for the control program.

2. Equipment Schematic.a. Provide an electronic equipment schematic for each piece of mechanical equipment. In the

event there are multiple quantities of a specific piece of mechanical equipment (i.e. variablevolume box) the electronic schematic shall be viewable from each of these instances.The schematic shall display all mechanical equipment characterizes including fans, dampers,

valves, sensors and other applicable control devices.

b. The schematic shall show wiring terminations to each control device as

shown in the submittal and as-build documentation.c. Control devices shall be labeled by a symbol that can easily be identified in a bill of material

that is shown on this graphic. The bill of material shall show the device symbol, description,manufacture and part number.

3. Sequence of Operations.a. The sequence of operations shall be viewable for each piece of mechanical equipment and be

in a text format as shown in the as built documentation.

b. The sequence of operations shall be selectable at the applicable location for the control pro

gram.

4. Bill of Material.a. Provide a bill of material that indicates specific manufacture, part number, part description

and quantity of each device for all system components.

1.13 WARRANTY

1. Warranty shall cover all costs for parts, labor, associated travel, and expenses for a period of one

year from completion of system acceptance.


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February 27, 2107

11. Hardware and software personnel supporting this warranty agreement shall provide on-site or off

site service in a timely manner after failure notification to the contractor. The maximum acceptable

response time to provide this service at the site shall be 4 hours, during normal working hours.

111. This warranty shall apply equally to both hardware and software.

PART 2 - PRODUCTS

2.1 MANAGEMENT LEVEL NETWORK

A. Extension of the Management Level Network shall meet, at minimum, the following requirements:

1. Ethernet TCP/IP network.2. BACnet standards.

3. Cabling shall be Category 6 or higher quality and shall be tested and certified for 1 Gbps datatransfer rate.

2.2 CS AUTOMATION LEVEL NETWORK

A. CS Automation Level LAN shall consist of only the following LAN's:1. MSTP. (76.8 Kbps minimum)2. BACnet.

3. Data transfer rate and data throughput as required to meet the alarm annunciation requirements.

B. The failure of any node on the Automation Level LAN shall in no way affect the operation of the CSexcept to inhibit monitoring and control functions at the OIW for that node or any devices served by

the failed node.

C. The failure of any node shall not inhibit the communication between remaining nodes.

2.3 COMMUNICATION CONTROL PANELS (CCP)

A. CCP shall be software programmable controllers on the primary Management Level Network and

shall be a router between the BACnet/IP Management Level Network and the BACnet/MSTP Auto

mation Level Network.

B. Provide, at minimum, one CCP.

C. The CCP shall incorporate software as necessary to provide communications on the ManagementLevel Network.

D. The failure of any CCP shall be annunciated as an alarm at the CMCS.

E. Provide a real-time hardware clock at each CCP. The hardware real-time clock shall be used to syn

chronize all other hardware and software clocks in the CS.


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2.4 EXPANDABLE CENTRAL PLANT APPLICATION CONTROLLERS (ECPAC)

A. BACnet Conformance

1. Central Plant/ AHU Controller shall as a minimum support Point-to-Point (PTP), MS/TP andEthernet BACnet LAN types. It shall communicate directly via these BACnet LANs as a nativeBACnet device and shall support simultaneous routing functions between all supported LAN

types. Building controller shall be a BACnet conformance class 3 device and support all BACnetservices necessary to provide the following BACnet functional groups:

a. Clock Functional Group

b. Files Functional Group

c. Reinitialize Functional Group

d. Device Communications Functional Group

e. Event Initiation Functional Group

2. Please refer to section 22.2, BACnet Functional Groups, in the BACnet standard for a completelist of the services that must be directly supported to provide each of the functional groups listedabove. All necessary tools shall be supplied for working with proprietary information.

3. Standard BACnet object types supported shall include as a minimum: Analog Input, Binary Input,Analog Output, Binary Output, Analog Value, Binary Value, Device, File, Group, Event Enrollment, Notification Class, Program and Schedule object types. All necessary tools shall be supplied for working with proprietary information.

4. The Controller shall comply with Annex J of the BACnet specification for IP connections. Thisdevice shall use Ethernet to connect to the IP internetwork, while using the same Ethernet LAN

for non-IP communications to other BACnet devices on the LAN. Must support interoperabilityon wide area networks (WANs) and campus area networks (CANs) and function as a BACnet

Broadcast Management Device (BBMD).

B. Schedules

1. Each Central Plant/ AHU controller shall support a minimum of 50 BACnet Schedule Objects.

C. Logging Capabilities

1. Each controller shall support a minimum of 200 trend logs. Any object in the system (real or calculated) may be logged. Sample time interval shall be adjustable at the operator's workstation.

2. Controller shall periodically upload trended data to system server for long term archiving if desired.

3. Archived data stored in database format shall be available for use in third-party spreadsheet or database programs.

D. Alarm Generation

1. Alarms may be generated within the system for any object change of value or state either real orcalculated. This includes things such as analog object value changes, binary object state changes,and various controller communication failures.


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February 2 7, 2107

2. Alarm log shall be provided for alarm viewing. Log may be viewed on-site at the operator's ter

minal or off-site via remote communications.

3. Controller must be able to handle up to 200 alarm setups stored as BACnet event enrollment ob

jects - system destination and actions individually configurable.

2.5 UNITARY CONTROLLERS

2.6

A. The CS Contractor shall provide all Unitary Controllers (UC). UC shall be fully programmable or ap

plications specific controllers with pre-packaged operating sequences maintained in EEPROM orflash RAM.

B. The UC shall be a node on one of the Automation LANs and shall control its own communication so

that the failure of any one node, shall not inhibit communications on the network between the remain

ing nodes.

C.

D.

E.

F.

G.

A.

UC shall be totally independent of other LAN nodes for their monitoring and control functions.

Provide each UC with a battery back-up or EEPROM for the protection of volatile memory for a

minimum of 72 hours. Batteries shall be rated for a seven year life.

All associated applications programs shall reside at the UC. UC shall not require communication to

any other panel for normal operating sequences other than time scheduled base commands.

Control shall be based on either three term algorithms, i.e. proportional plus integral plus derivative,

or two term algorithms, i.e. proportional plus integral, unless specified otherwise.

Provide with each controller the BACnet configuration information including BIBB, address, control

ler configuration type, etc. to integrate the controller into the CMCS.

INTERFACE SOFTWARE

Alarms shall be generated by the CS upon the occurrence of one of the following events:

1. Failure of a CCP, UC, or any other CS hardware components.

2. Failure of communications of devices on the Automation Level Network.

3. A monitored status indicates a discrepancy between the actual and the required value.

4. A monitored value does not meet criteria established by the operator.

5. The deviation of a variable from setpoint exceeds operator established criteria.

6. The output to a final control element is outside operator established criteria.

7. A digital input is in the state defined by the operator as indicating an alarm condition.

8. Software failures and errors shall be diagnosed and annunciated by the CS.

Provide configuration of alarming for all monitored and controlled points. Coordinate all alarm limits

and definitions with Angleton Recreation Center, City of Angleton.

2.7 ENERGY MANAGEMENT SOFTWARE

A. An operator with CS configuration software shall be able to define a minimum time delay between

successive starts of equipment so that disturbances created on the building electrical system are min

imized in frequency and amplitude.


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February 27, 2107

B. An operator with CS configuration software shall be able to define the minimum time delay betweenthe stopping of a piece of equipment and its subsequent restart. This time delay shall be in effect for

motors in the CS software control mode and for motors in the CS manual control mode.

C. The CS shall not override any hardwired interlocks such as those provided at motor starters for overload protection, damper interlock, pressure interlock, etc. and those provided to facilitate control by

the Fire Alarm System regardless of the CS output control mode.

D. Unless stated otherwise elsewhere in these Specifications, the modulation of final control elements by

the CS in the CS software control mode shall be based on a Proportional-Integral-Derivative (PID)

control algorithm. The control constants for the PID algorithm shall be definable by the operator. Ifself-tuning algorithms are provided, it shall still be possible for the operator to manually tune the control loops. The software shall incorporate facilities to enable the bumpless transfer of a modulating

output from CS manual control to CS software control and vice versa and the prevention of integral

wind-up. PID algorithms shall maintain the system operation within the desired tolerance around thesetpoint.

E. Provide dynamic graphical trending software that emulates, at minimum, a three point strip graphical

format. The graphs shall be plotted as the values are sampled in a similar fashion to a chart recorderand when the plot reaches the right hand side of the X-axis, the X-axis shall scroll to the left so as to

accommodate newly sampled data.

F. Provide an energy monitoring software facility to monitor and report electrical energy usage and instantaneous energy demand. This feature shall also store data for recall via the historical data trend

package.

G. Provide run time totalizing software that will accumulate the operating times for motors and unitaryequipment as selected by the operator using an interactive procedure. Any piece of equipment thathas its status monitored by the CS shall be selectable for inclusion in this feature. It shall be possible

to concurrently monitor the accumulated operating time for every item of equipment monitoredand/or controlled by the CS.

H. Provide demand limiting and duty cycle programs that will duty cycle equipment usage in a mannerthat conserves energy. The cycling of equipment shall be initiated by one of the following means:

I. Operator defined schedule.2. Peak electric demand control software program.

3. Operator manual command.

The proportion of ON time to OFF time in a single cycle shall either be assigned by the operator us

ing an interactive procedure or the operator may elect to have a variable ON/OFF ratio based on other criteria.

I. Provide a scheduling program that will enable the CS to automatically schedule an item of equipment

on and off (occupied) and on and off (unoccupied) based on time to allow the AHU to operate withthe outside air dampers closed during non-occupied time periods. The operator shall be able to assigna minimum of four start and four stop times to each piece of equipment for each day of the week andfor holidays. These schedules shall only be in effect for a piece of equipment when it is in the CSsoftware control mode. The scheduling feature shall conform to the requirements of the CMCS

scheduling interface.


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February 27, 2107

J. Provide equipment fail restart software that will restart equipment shut down as the result of a signal

provided by the fire alarm system following the return to normal conditions or a power fail condition.

K. Provide a night setback software program that shall:I. Start HV AC equipment after normal hours of scheduled operation to maintain building after hour

setpoints, while reducing energy consumption.2. Night setback temperatures for heating shall be initially set at 55° Deg. F.(adj.) to activate the

heating equipment and 60° Deg. F. (adj.) to stop the heating equipment. Once activated, the unitsinvolved shall operate as specified in the respective sequence of operation. Coordinate the opera

tion of this program with the requirements for terminal unit controls.3. Night setup temperatures for cooling shall be initially set at 90° Deg. F. (adj.) to activate the cool

ing equipment and 85° Deg. F. (adj.) to stop the cooling equipment. Once activated, the units involved shall operate as specified in the respective sequence of operation. Coordinate the operation

of this program with the requirements for terminal unit controls.

4. This feature shall be provided for all HV AC equipment under control of the CS. The operatorshall be able to enable/disable this function on a unit by unit basis.

2.8 AUTOMATIC DAMPERS

A. Furnish automatic dampers (AD) as indicated on the Division 23 Mechanical Drawings for installation by the Division 23 Mechanical Contractor. Refer to Division 23 Drawings.

B. Provide actuators for all automatic dampers furnished as part of the CS contract. Provide all requiredactuator mountings, installation, drive arms, linkages and damper end switches. Provide actuators for

all dampers provided as part of a factory installation within AHU or unit ventilators.

C. Dampers and actuators shall be configured for normal and failure positions as indicated in the operat

ing sequences and as indicated in the Division 23 Mechanical Drawings.

D. The maximum leakage rate for AD shall not exceed IO cfm per square foot at 4 inches W.C.

E. Provide electric damper actuators for all AD. Electric actuators shall meet, at minimum, the followingrequirements:I. Actuators shall be directly coupled to damper drive blades with no intermediate linkages or shall

be rotary type actuators directly coupled to the damper drive shaft.2. 120 Vac + or - 10% 60 Hz or 24 Vac power supply.3. Actuators shall be motorized/driven in both the open and closed directions. Where required by

the sequences of operation, actuators shall have a spring return to the de-energized position uponloss of power. Damper normal and failure positions shall be as identified within the sequences of

operation.

F. Dampers shall be Honeywell or Belimo.

2.9 FIELD INSTRUMENTATIONA. Outside air temperature sensor: Provide outside air temperature sensors as indicated within

the Point Schedules. Temperature sensors shall meet, at minimum, the following require

ments:I. Ventilated white PVC sun shield.

2. Wall mount weather proof enclosure with conduit fitting.3. RTD or thermistor.4. CS shall report the monitored temperature with an end-to-end accuracy of± 0.5 Deg. F.

INSTRUMENTATION AND CONTROL FOR HV AC 23 09 00 - 16

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February 27, 2107

B.

C.

D.

Duct mounted temperature sensor: Provide duct mounted, single point temperature sensors as indicated within the Point Schedules. Temperature sensors shall meet, at minimum, the following requirements: 1. Averaging sensor on air handler applications.2. Duct probe sensor on terminal unit and unit ventilator applications.3. Stainless steel.4. RTD or thermistor.5. CS shall report the monitored temperature with an end-to-end accuracy of± 0.5 Deg. F.6. Provide with a galvanized box. Plastic boxes are not allowed.

Wall mounted space temperature sensor: Provide wall mounted temperature sensors for spaces as indicated within the Point Schedules. Temperature sensors shall meet, at minimum, the following requirements: 1. Location as shown on the Mechanical Drawings. Sensor location shall be across the

room from the unit.2. RTD or thermistor.3. 4.

5. 6. 7.

CS shall report the monitored temperature with an end-to-end accuracy of± 0.5 Deg. F. Mounted 48 inches above finished floor or adjacent to light switch. Mount even with top of light switch across the room from the unit. Setpoint adjustment slide bar Pushbutton override Provide flat plate stainless steel sensors with no local setpoint adjustment in corridors, gymnasiums and common areas.

Freezestat: Provide freezestats for all air handling systems that receive untreated outside air. Freezestats shall meet, at minimum, the following requirements:

1. Minimum 20 feet vapor tension element, which shall serpentine the inlet face on allcoils. Provide additional sensors, wired in series, to provide one linear foot per squarefoot of coil surface area.

2. Interlock to the associated fan so that fan will shut down when HOA switch is in Handor Auto position. Provide time delay relays with a 0-10 minute time delay relay duration to minimize nuisance freezestat trips. Time delay relay shall be adjustable at the associated control panel.

3. Manual reset.

E. Outside air relative humidity sensor: Provide outside air relative humidity sensors as indicated within the Point Schedules. Humidity sensors shall meet, at minimum, the following requirements:1. Non-corroding outdoor shield to minimize wind effects and solar heating. Wall mount

weather proof enclosure with conduit fitting.2. Two wire, 4-20 mA output proportional to relative humidity range of 0% to 100%.3. ± 2% accuracy (5 - 95% RH).4. Humidity sensor shall be replaceable.

F. Interior air relative humidity sensor: Provide wall mounted relative humidity sensors as indicated within the Point Schedules. Humidity sensors shall meet, at minimum, the followingrequirements:1. Wall mount enclosure with white cover.2. Two wire, 4-20 mA output or digitally communicating proportional to relative humidity

range of0% to 100%.


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February 27, 2107

3. Humidity sensor shall be replaceable.4. ± 2% accuracy (5 - 95% RH).5. Mounted 48 inches above floor across the room from the unit.

G. Duct mounted relative humidity sensor: Provide duct mounted relative humidity sensors asindicated within the Point Schedules. Humidity sensors shall meet, at minimum, the following requirements:

1. Duct mounted moisture resistant enclosure with conduit fitting.2. Two wire, 4-20 mA output proportional to relative humidity range of 0% to 100%.

3. Humidity sensor shall be replaceable.4. ± 2% accuracy (5 - 95% RH).5. 8 inch probe length.

H. Wall Mounted Carbon Dioxide Sensor: The CO2 sensor shall be capable of monitoring CO2

concentration in a space at an accuracy of+/- 30 parts per million (PPM). The CO2 sensorshall produce a linear 0-10 VDC signal over the range of O to 2000 PPM. The CO2 sensorshall measure using non-dispersed infrared (NDIR) technology to measure carbon dioxide gas

and shall have Automatic Background Calibration (ABC) algorithm to reduce typical zerodrift check maintenance. CO2 sensors for unit ventilators and fan coil units shall be mounted

across the room from the unit beside the wall mounted space sensor. Wall mounted carbondioxide sensors shall be Honeywell C7632A.

I. Duct Mounted Carbon Dioxide Sensor: The CO2 sensor shall be capable of monitoring CO2concentration in a space at an accuracy of+/- 30 parts per million (PPM). The CO2 sensor

shall produce a linear 0-10 VDC signal over the range of O to 2000 PPM. The CO2 sensorshall measure using non-dispersed infrared (NDIR) technology to measure carbon dioxide gas

and shall have Automatic Background Calibration (ABC) algorithm to reduce typical zerodrift check maintenance. CO2 sensors for duct mounted applications shall be installed in the

return air path. Duct mounted carbon dioxide sensors shall be Honeywell C7632B.

J. Momentary control relays: Provide momentary control relays as indicated within the PointSchedules and sequences of operation. Relays shall meet, at minimum, the following requirements:1. Coil ratings of 120 VAC, 50 mA or 10-30 VACNDC, 40 mA as suitable for the appli-

cation.2. Provide complete isolation between the control circuit and the digital output.

3. Located in the UC or other local enclosures.4. 10 amp contact rating.5. LED status indication.

6. Pin type terminals.7. Latching relays not acceptable.

K. Duct static pressure sensor: Provide duct mounted static pressure sensors as indicated within

the Point Schedules. Static pressure sensors shall meet, at minimum, the following requirements:1. Input range shall be O to 2.0 inches w.g. or as required by the application.

2. 4-20 mA output proportional to pressure input range.3. ± 5% accuracy.


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February 27, 2107

L. Current sensing relay: Provide current sensing relays as indicated in the Point Schedules for motor status. Current metering transformers and relays shall meet, at minimum, the follow

ing specifications:1. Rated for the applicable load.

2. The output relay shall have an accessible trip adjustment over its complete operatingrange. Provide LED indication of relay status.

3. Split core shall be sized for the application.4. Latching relays not acceptable.

M. Air differential pressure switch for fan shutdown: Provide air differential pressure switchesas indicated in the Point Schedules to shut down the associated fan in the event of sensing

high differential pressure. Air differential pressure switches shall meet, at minimum, the following requirements:1. Adjustable setpoint with a setpoint range of Oto 10 inches w.g.

2. 1/4 inch compression fittings suitable for copper sensing tubing.3. Manual reset.

N. Photocell: Provide ambient light level sensors as indicated within the Point Schedules. Lightlevel sensor shall meet, at minimum, the following requirements:1. Non-corroding and weatherproof housing with sensor shield suitable for exterior instal-

lations.2. 4-20 mA output proportional to the ambient light level.3. Mounted on the exterior of a North wall on the roof.4. Sensor reading from Oto 750 foot candles.

0. Occupancy Sensor

1. The ultrasonic occupancy sensors shall be capable of detecting presence in the controlarea by detecting doppler shifts in transmitted ultrasound.

2. Sensors shall use patent pending ultrasonic diffusion technology that spreads coverage

to a wider area.

3. Ultrasonic sensing shall be volumetric in coverage with a frequency of 40 KHz. It shallutilize Advance Signal Processing, which automatically adjusts the detection thresholddynamically to compensate for constantly changing levels of activity and airflowthroughout controlled space.

4. To avoid false ON activation and to provide immunity to RFI and EMI, Detection Signature Analysis shall be used to examine the frequency, duration, and amplitude of a

signal, to respond only to those signals caused by human motion.

5. Sensors of varying frequencies shall not be allowed so as to prevent sensors from interfering with each other and to assure compatibility in the event more sensors are added.

6. Sensors shall operate at 24 VDCN AC and half-wave rectified.

7. Detection shall be maintained when a person of average size and weight moves onlywithin or a maximum distance of twelve inches either in a horizontal or vertical mannerat the approximate speed of 12 inches per second. The sum of this distance, volume and

speed represent the average condition ultrasonic sensors must meet in order for the lightsto not go off when a person is reading or writing while seated at a desk.

8. Sensors shall have a manual on function that is facilitated by installing a momentaryswitch.


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February 27, 2107

9. Sensors shall be mounted to the ceiling with a flat, unobtrusive appearance and provide360° of coverage.

10. Sensors shall utilize SmartSet technology to optimize time delay and sensitivity settingsto fit occupants usage patterns. The use of SmartSet shall be selectable with a DIP

switch. Sensor shall have user-adjustable sensitivity setting.

11. Sensor shall feature a walk-through mode, where lights tum off 3 minutes after the area

is initially occupied if no motion is detected after the first 30 seconds.

12. Sensors shall cover 360° and up to 2000 square feet of walking motion.

13. Sensor shall have an additional single-pole, double throw isolated relay with normallyopen, normally closed, and common outputs. The isolated relay is for use with HY AC

control, data logging, and other control options.

14. Sensors shall have a time delay that is adjusted automatically (with the SmartSet setting)or shall have a fixed time delay of 5 to 30 minutes, set by dipswitch.

15. Sensors shall feature terminal style wiring, which makes installation easier.

16. The sensor shall have an LED indicator that remains active at all times in order to verifydetection within the area to be controlled. The LED can be disable for applications thatrequires less visibility.

17. To ensure quality and reliability, sensor shall be manufactured by an ISO 9002 certified

manufacturing facility and shall have a defect rate of less than 1/3 of 1 %.

18. Sensor shall have standard five year warranty and shall be UL and CUL listed.

P. Variable Frequency Drives1. The variable frequency drive (VFD) shall generate the required variable frequency

through three main input voltage lines connected to an LC filter and diode bridge. Thisshall produce a DC voltage for an insulated gate bi-polar transistor (IGBT) bridge. The

IGBT Bridge shall produce a pulse-width modulated (PWM) AC voltage for the motor. Amicroprocessor shall control the motor according to measured signals and control commands sent from the VFD control panel. The VFD enclosure shall be NEMA 1. VFDshall be suitable for INSERT DESIRED VOLT AGE RANGE (208-240 V AC or 380-500V AC. The VFD shall maintain functionality from -15% to + 10% of nominal voltage at a

frequency of 45-66 Hz. Ambient operating temperature range shall be 14 F to 104 F, andthe humidity range: 5 to 95% RH (non-condensing). VFD shall accommodate inputs of 0-

10 VDC, 4-20 mA, up to six digital inputs. VFD outputs shall include current of 0-20

mA, 500 ohm maximum with 10 bit resolution, and two programmable change-over relayoutputs with switching capacity of 24 VDC, 8A; 250 V AC, 8A; and 125 VDC, 0.4A. The

variable frequency drive shall have separate pre-loaded user-programmable applicationswhich can be modified using a personal computer-based commissioning tool with an op

tional software package, or an alpha-numeric LCD user interface. Aforementioned application functionality shall include but not be limited to:

2. Basic Functionality Application providing the following:a. Control 1/0 signals (two (2) analog inputs, one (1) digital input, and one (1) analog

output) are fixed

b. One (1) programmable digital input and one (1) programmable digital outputc. All parameters have default values,d. No more than nine (9) parameter settings are required for startup and operation.

3. Expanded Functionality Application providing all capabilities in the previousapplication as well as the following:


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a. One ( 1) programmable digital input and all outputs are programmableb. Frequency limit and prohibit capabilityc. Programmable start/stop and reversing logicd. Automatic restarte. Programmable actions for motor thermal and stall protectionf. DC brake at stop

4. Application that provides all previously mentioned capability as well as enabling the useof two different control and frequency sources. Each source must be programmable

5. Application which provides all functionality from the Expanded Functionality Applica

tion as well as accommodates multiple, required fixed speed references.6. PID Control Application - Uses internal PID control loop to control motor frequency as

well as providing:a. Input and output phase supervisionb. Programmable capability for three (3) digital inputs and all outputsc. Sleep function

7. Multi-purpose Control Application - The frequency reference can be selected from analog inputs, joystick control, motor potentiometer, or a mathematical function of the ana

log inputs.8. Application specifically designed to control one leading variable speed drive and up to 3

auxiliary drives.9. Variable frequency drives shall be UL listed and sized for the power and loads applied.

Drives shall include built-in radio frequency interference (RFI) filters and be constructedto operate in equipment rooms and shall not be susceptible to electromagnetic disturbances typically encountered in such environments. Similarly, the drives must not excessively disturb the environment within which it is used. All VFDs over 3 horsepower shallbe provided with an AC choke before rectifiers. All included chokes and filters shall beintegrated in the factory enclosure. VFDs shall be installed in strict conformance to themanufacturer's installation instructions, and shall be rated to operate over a temperaturerange of 14 to 104 F.

VFD automatic operation shall be suitable for 4-20 ma input signal. Each VFD shall be fan cooled and have an integral keypad and alphanumeric "plain-language" display unit for user interface. The display shall indicate VFD status (RUN motor rotation, READY, STOP, ALARM, and FAULT), and shall indicate the VFD current control source (DDC input signal, keypad, or field bus control). In addition to the alphanumeric display, the display unit shall have three pilot lights to annunciate when the power is on (green), when the drive is running (green, blinks when stopping and ramping down), and when the drive was shut down due to a detected fault (red, fault condition presented on the alphanumeric display).

10. Three types of faults shall be monitored, "FAULT" shall shut the motor down, "FAULTAuto-reset" shall shut the motor down and try to restart it for a programmable number oftries, and "FAULT Trip" shall shut the motor down after a FAULT Auto-reset fails to re

start the motor. Coded faults shall be automatically displayed for the following faults:

Over current Over voltage Earth ground Emergency stop System (component failure) Under voltage


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Phase missing Heat sink under temperature

Heat sink over temperature Motor stalled Motor over temperature Motor under load Cooling fan failure

Inverter Bridge over temperature Analog input control under current

Keypad failure Other product unique monitored conditions

February 27, 2107

11. In addition to annunciating faults, at the time of fault occurrence the VFD shall captureand make available to the user certain system data for subsequent analysis during faulttrouble shooting, including duration of operation (days, hours, minutes, seconds), outputfrequency, motor current, motor voltage, motor power, motor torque, DC voltage, unittemperature, run status, rotation direction, and any warnings. The last 30 fault occurrences shall be retained as well as the fault data listed in the previous sentence of each

fault. New faults beyond 30 shall overwrite the oldest faults.12. The display unit keypad shall allow setting operational parameters including minimum

and maximum frequency, and acceleration and deceleration times. The display shall offer user monitoring of faults, frequency, unit temperature, and motor speed, current,torque, power, voltage, and temperature.

13. VFD's shall be equipped with a Coo] B1ue Bypass14. VFD's shall be equipped with BACnet interface card

15. Provide Honeywell Series NXS, NXL or NXP VFD's

2.10 PANELS

A. Provide panels and enclosures for all components of the CS, which are susceptible to physical or en-vironmental damage.

B. Interior panels and enclosures shall meet be NEMA 1 rated painted steel panels with locking door.

C. Exterior mounted panels and enclosures shall be NEMA 4 painted steel panels with locking door.

D. Panels for UC's shall be mounted on the outside of all unit ventilators and fan coil units with threefeet of wall clearance in front of them.

2.11 LABELING and WARNING NOTICES

A. Provide labeling for all UC panels and enclosures.

B. Provide labeling of all cables and input/output points at the controller in all wall mounted panels.

C. Provide warning notices at all equipment controlled by the CS and at all associated motor starters.

2.12 TUBING AND PIPING

A. Provide tubing and piping as required for the field instrumentation.


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February 27, 2107

B. Tubing within equipment rooms, vertical risers, and penetrations to ductwork shall be either copperpipe or shall be plastic tubing within conduit. Tubing for all water-based instrumentation shall be

copper pipe. Identify the type of tubing proposed in the shop drawing submittal.

C. Provide suitable bulk head fittings for duct and panel penetrations.

D. Tubing in plenum rated areas shall be plastic tubing. Plastic tubing shall meet, at minimum, the fol

lowing requirements:1. Flame retardant.

2. Crack resistant.

3. Polyethylene tubing.

4. 300 psi burst pressure.

2.13 CONDUIT AND FITTINGS

A. Provide all conduit, raceways and fittings for the CS monitoring, communication and control cabling.

All work shall meet all applicable codes.

B. Conduit, where required, shall meet, the requirements specified within Division 26.

C. Conduit shall be provided whenever one of the following conditions exists:

1. Conduit is required by code.

2. Conduit is indicated on the drawings or specifically required by the specifications.3. Cabling runs through inaccessible areas such as within partitions/walls, above closed in ceilings,

under floor, within trenches on the exterior of the building, when encased in concrete or other material that makes the cable inaccessible or when located such that access to the cable is not readily

obtained.4. Cable within mechanical, telecommunications and electrical equipment rooms and control rooms

shall be enclosed within conduit.

5. Cable run on the exterior of the building shall be in conduit.6. Cable run on an exposed surface shall be in conduit.

7. Conduit shall be installed, inside wall from sensor box to above the wall, for all wall mounted

temperature, humidity and CO2 sensors.

D. CS monitoring and control cable shall not share conduit with cable carrying voltages in excess of 48

volts.

2.14 CABLING

A. Provide all cables for the CS. Cable shall meet, at minimum, the following requirements:1. Minimum 98% conductivity stranded copper.2. Proper impedance for the application as recommended by the CS component manufacturer.3. Monitoring and control cable shall be #18 AWG or larger, dependent on the application. Analog

input and output cabling shall be shielded.4. Management Level Network cable shall be CAT 6, 24 gauge unshielded.5. Automation Level Network cable shall be #24 AWG shielded.

6. Shield shall be grounded at the CCP, UC, or control panel. Ground at one end only to avoidground loops.

7. Identification of each end at the termination point. Identification should be indicated on and cor

respond to the record drawings.


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February 27, 2107

B. 120 VAC power wiring shall be of#12 AWG solid conductor or larger as required.

C. All cable within the building shall be plenum rated cable where required by code. All cable that isnot enclosed in conduit shall be plenum rated cable. Plenum rated cable not in conduit shall be routedparallel and perpendicular with the building column lines. Cable may follow ductwork routing andmay be fixed to the top or side of the ductwork. If cabling does not follow the ductwork routing, itshall be fixed tight to the structure above. Provide cable bridal rings and beam clamps, at minimum,

15 ft. to support the cabling.

D. All cable run underground shall be underground or direct burial rated cable.

PART 3 -EXECUTION

3.1 TRAINING

A. Training: The contractor shall provide 8 hours of training to Angleton Recreation Center, City of

Angleton maintenance personnel in a laboratory classroom environment. Training will be done byFactory Certified personnel locally. Students shall be provided with a dedicated computer workstation

utilizing a simulated BAS software platform that is installed for this project. Provide documentationfor this requirement in the initial BAS submittal. Following substantial completion.

1. Operator Overview - Consists of general system navigation, scheduling functions, setpoint modifications and parameter adjustments.

2. Advanced Topics Overview - Detailed analysis of trend setup/configuration, trend historian,alarm setup, alarm actions (email, printing, etc.), point renaming, and detailed analysis of equipment parameters.

3. Program/Logic Manipulation - Modify system programs as needed for additions and modifications.

4. Graphic Manipulation -Modify system graphics as needed for additions and modifications.

5. Hardware Troubleshooting - Classroom setup shall have· HV AC mock-up systems. Operators

shall be able to interact with this live system through the BAS utilized for this project. Class willprovide students the ability to identify and repair common problems regularly encountered.

6. Software Troubleshooting - Classroom setup shall have HVAC mock-up systems. Operators shallbe able to interact with this live system through the BAS utilized for this project. Class will provide students the ability to identify and repair common issues that can be utilized via softwaremodifications.

7. Central Plant Operation - At a minimum the instructor shall thoroughly explain different types of

central plant equipment and proper system modifications that can be made to enhance system performance and energy savings.


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February 27, 2107

HY AC System Training - Objective of this class is to provide basic HY AC system knowledge of various types of systems including types of air side distribution and water side distribution. Top

ics such as thermodynamics, psychometrics, de-humidification, and demand control ventilation shall be thoroughly explained.

3.2 INSPECTION DURING INSTALLATION

A. Prior to acceptance testing, the CS shall be available for use by the Angleton Recreation Center, Cityof Angleton. Use by the Angleton Recreation Center, City of Angleton shall not imply acceptance

of any component of the CS or the commencement of the warranty period.

B. Provide staff to assist the Angleton Recreation Center, City of Angleton/Engineer with inspectionsmade during the installation period that are required to review the progress and quality of ongoingwork. The Angleton Recreation Center, City of Angleton /Engineer will generate Field Observation

Reports on the findings of the inspection. The Angleton Recreation Center, City of Angleton

/Engineer shall advise the CS Contractor during the inspection of any concerns noted with respect tothe installation and shall repeat the concerns in writing as soon as possible after the inspection is

completed. The CS Contractor shall take corrective action to meet the requirements of the specifications.

3.3 COMMISSIONING REQUIREMENTS

A. Control system shall be set up and checked by factory trained competent technicians skilled in the set

ting up and adjustment of the BAS equipment used in this project. This technician is to be experienced in the type of HY AC systems associated with this project.

B. After completion of the commissioning, this contractor will demonstrate the sequence of operationsfor each system to the mechanical engineer or his representative.

C. Equipment checkout sheets are to be produced by this contractor showing checkboxes and compliance with the following procedures for each piece of equipment and turned over to the Angleton Rec

reation Center, City of Angleton and/or mechanical engineer.

D. Check all equipment to see that it follows the sequence of operation.

E. VAV RTU

1. Check all wiring from module can(s) to each end device including any starters, VFDs, and

dampers.2. Check the module(s) for shorts, correct power and change 4-20 jumpers.3. Check that the communication jumpers are set properly.4. If any safety devices are present check that they are wired properly. If they are adjustable make

sure that they are set to the proper setting before operating any equipment.5. Stroke dampers and valves for proper operation. Set dampers and valves up in the software.6. Check and calibrate all temperature sensors. If humidity is present check that it is set up proper-

ly in the software.7. Verify that the VFDs have been set up by the drive start up personal.8. Check VAY boxes and make sure that all dampers are open before you start/ stop the RTU.

9. This will keep the ductwork for being damaged.10. Start / Stop the unit to check starter or VFD for proper operation. While unit is running check

for status.

11. Check start/ stop of any ex-fans associated with the unit.


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12. Check all equipment to see that it follows the sequence of operation.

3.4 CONTROL SYSTEM DEMONSTRATION AND ACCEPTANCE

February 27, 2107

1. Demonstration. Prior to acceptance, perform the following performance tests to demonstrate

system operation and compliance with specification after and in addition to tests specified in

Article 4.3 (Commissioning Requirements). Provide Engineer with log documenting comple-

tion of startup tests.

2. Engineer will be present to observe and review system demonstration. Notify Engineer at least

10 days before system demonstration begins.

3. Demonstration shall follow process submitted and approved under Section 23 09 00 Article1.11 (Shop Drawings). Complete approved checklists and forms for each system as part of sys

tem demonstration.

4. Demon Demonstrate actual field operation of each sequence of operation as specified in Sequence of Operations. Provide at least two persons equipped with two-way communication.

Demonstrate calibration and response of any input and output points requested by Engineer.

Provide and operate test equipment required to prove proper system operation.5. Demonstrate compliance with sequences of operation through each operational mode.

6. Demonstrate complete operation of operator interface.

7. Demonstrate each of the following.

a. DDC loop response. Supply graphical trend data output showing each DDC loop's re

sponse to a setpoint change representing an actuator position change of at least 25% of

full range. Trend sampling rate shall be from 10 seconds to 3 minutes, depending on loop

speed. Each sample's trend data shall show setpoint, actuator position, and controlled var

iable values. Engineer will require further tuning of each loop that displays unreasonably

under- or over-damped control.

b. Demand limiting. Supply trend data output showing demand-limiting algorithm action.

Trend data shall document action sampled each minute over at least a 30-minute period

and shall show building kW, demand-limiting setpoint, and status of setpoints and other

affected equipment parameters.c. Trend logs for each system. Trend data shall indicate setpoints, operating points, valve

positions, and other data as specified in the points list provided with each sequence of op

eration in Section 23 09 00. Each log shall cover three 48-hour periods and shall have a

sample frequency not less than 10 minutes or as specified on its points list. Logs shall be

accessible through system's operator interface and shall be retrievable for use in other

software programs as specified in Section 23 09 00 Article 2.9 Paragraph E. (Dynamic

Graphical Trending).8. Tests that fail to demonstrate proper system operation shall be repeated after Contractor makes

necessary repairs or revisions to hardware or software to successfully complete each test.9. Prepare a log documenting startup testing of each input and output device, with technician's initials

and date certifying each device has been tested and calibrated. This document shall indicate proofthat the following functions have been commissioned. Include this information in the as-built

document

a. Short to ground check.

b. Trend configuration

c. Graphic displayd. Point to point

e. Lock point on. Equipment reaction.

f. Unlock point. Equipment reaction.

g. Equipment location correct.

h. Signal type.


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February 27, 2107

1. Stroke control valve.

J. Verify damper actuator operation

k. Module address verification

1. VA V box crossflow caps verified

m. Verify interlocks and shutdowns10. Calibrate and prepare for service each instrument, control, and accessory equipment furnished

under Section 23 09 00.11. Verify that control wiring is properly connected and free of shorts and ground faults. Verify that

terminations are tight.

12. Enable control systems and verify each input device's calibration. Calibrate each device accordingto manufacturer's recommendations.

13. Verify that binary output devices such as relays, solenoid valves, two-position actuators and control valves, and magnetic starters, operate properly and that normal positions are correct.

14. Verify that analog output devices such as 1/Ps and actuators are functional, that start and span are

correct, and that direction and normal positions are correct. Check control valves and automatic

dampers to ensure proper action and closure. Make necessary adjustments to valve stem and

damper blade travel.15. Verify that system operates according to sequences of operation. Simulate and observe each oper

ational mode by overriding and varying inputs and schedules. Tune PID loops and each control

routine that requires tuning.

16. Alarms and Interlocks.a. Check each alarm with an appropriate signal at a value that will trip the alarm.b. Trip interlocks using field contacts to check logic and to ensure that actuators fail in the prop

er direction.c. Test interlock actions by simulating alarm conditions to check initiating value of variable and

interlock action.

B. ACCEPTANCE

1. After tests described in this specification are performed to the satisfaction of both Engineer and

Angleton Recreation Center, City of Angleton, Engineer will accept control system as meetingcompletion requirements. Engineer may exempt tests from completion requirements that cannotbe performed due to circumstances beyond Contractor's control. Engineer will provide written

statement of each exempted test. Exempted tests shall be performed as part of warranty.2. System shall not be accepted until completed demonstration forms and checklists

3.5 HANGING AND SUPPORTING

A. Install all equipment, devices, materials and components in compliance with the manufacturer's rec

ommendations. Supports shall be suitable for the environment within which the component is to be

installed. Coordinate all hanging and supporting of components with all trades.

B. Provide sleeves for all cable and conduit passing through walls, partitions, structural components,

floors and roof.

3.6 HARDWIRED INTERLOCKS

A. Provide all required hardwired interlocks between fans, intake and discharge dampers, and motor ac

tuated damper as identified within this specification or the Mechanical Drawings, whether or not fur

nished under this Section unless the fan is furnished with interlock by fan manufacturer.


96

Angleton Recreation Center HVAC Replacement City of Angleton, Texas

February 2 7, 2107

B. SYSTEM - DEDICATED OUTSIDE AIR PACKAGED ROOFTOP UNIT

1. RTU Mode (Standard Features):

a. Occupied: The unit is enabled based on an occupancy schedule when integrated by a

Building Automation System (BAS), or from a time clock or mechanicalswitch/interlock.

b. Unoccupied: The unit is placed into standby with the fan off and the outside airdamper closed. The fan is capable of cycling on to maintain unoccupied cooling and

heating mode set points when monitoring space conditions.c. Heating: Is enabled when the controlled temperature falls below the heating set point and

cooling is disabled.

d. Cooling: Is enabled when the controlled temperature rises above the cooling set point and

free cooling is unavailable.e. Economizer. If outside air temperature is less than the controlled air set point and outside air

enthalpy is less than 23 BTU/lb. (adj.) for more than 30 minutes (adj.), the unit is in econo

mizer mode.

2. Supply Fan Mode:a. Occupied: The fan is commanded to operate continuously. All occupied and night cycle op

erations are enabled only when the supply fan feedback status is confirmed.b. Unoccupied: The fan is commanded off. The fan can cycle on for unoccupied cooling or

heating modes.

3. Exhaust Fan Mode:a. Occupied: The fan is commanded on when outside air damper is greater than or equal to the

outside air damper minimum position and the supply fan is operating. The fan also starts

when the heat wheel is operating.b. Unoccupied: The fan is commanded off. The exhaust fan does not night cycle.

4. Cooling Unoccupied Mode:a. The unit is disabled and the cooling valve is closed.b. If a space temperature sensor 1s used and the space temperature

rises above the unoccupied cooling set point of 80°'F (adj.), the unitis enabled. The unit operates with the outside air damper closed and the cooling staged on.When space temperature falls 2°F below set point, the cooling stages off, and four minuteslater, the fan stops.

c. Cooling is enabled when the space temperature is above the cooling set point of 74°F (adj.),and outside air temperature is above the cooling lockout set point of 50°F (adj.).

d. The unit stages on compressors as required to maintain the space temperature set point.e. When outside air enthalpy is below 23 BTU/lb. (adj.) and outside

air temperature is below the space temperature set point, coolingis disabled and free cooling, with outside air, becomes the first stage of cooling if required.

5. Heating Occupied Mode: Space Controla. Modulating heating is enabled when space temperature fails below the heating set point of

70°

F (adj.), and cooling is not operating.b. Modulating heating increases output until the space temperature rises above the heating set

point.c. Modulating heating is enabled when discharge temperature falls below the heating set point

(adj.), and cooling is not operating.

6. Heating Unoccupied Mode

a. Modulating heating is disabled.


97



February 27, 2107

b. If the space temperature sensor is used and the space temperature falls below the unoccupiedheating set point of 65°F (adj.), the fan starts and modulating heating increases its ouput to

100%. Modulating heating output decreases to 0% when space temperature reaches 2°F

above the unoccupied heating set point, and four minutes later, the fan stops.

7. Economizer Occupied Mode: Enthalpy Limita. If outside air temperature is less than the controlled air set point (adj.), and outside air enthal

py is less than 23 btu/LB. (adj.) for more than 30 minutes (adj.), the unit will be in the economizer mode.

b. Discharge Air Control Option: In the event mixed air temperature falls below 40°F (adj.)

during heating mode, the economizer will control to that set point.c. Space Control Option: In the event discharge air temperature fall below 60°F (adj.) during

heating mode, the economizer will control to that set point.d. When the unit is not in economizer mode, the outside air damper is set to minimum position,

as determined during air balancing.

8. Economizer Unoccupied Mode:a. The outside air damper remains fully closed.

C. SYSTEM-VENTILATION FANS

1. System Off - When the system is off:

a. The fan shall be off.

2. Initiation of System Start-Up - System start-up shall be initiated:a. Manually by a CMCS operator entered command.

b. Automatically by the CS base on time schedule.3. System Operation - When system start-up has been initiated, the following sequences shall be

implemented:

a. The fan shall be started.

4. Initiation of System Shutdown - ·System shutdown shall be initiated:

a. Manually by an operator entered command.

b. Automatically by the CS.

5. Alarms - The CS shall generate an alarm if:

a. The fan fails to start or fails in service.

D. SYSTEM - VA V ROOFTOP UNITS1. System Off - When the system is off:

a. The unit outside air damper shall be closed.

b. The supply air fan shall be off.

c. Compressors and condenser fans are off.

2. Initiation of System Start-Up - System start-up shall be initiated:

a. By an operator manually entered command at the CMCS.

b. Automatically by the CS based on night setup, time schedule.3. System Operation - When system start-up has been initiated, the following sequences shall be

implemented:a. The variable speed supply air fan shall start and the speed shall be modulated to maintain

the duct static pressure setpoint.

b. Once the unit is operating during normal occupied time periods, the outside air dampershall be modulated open to the maximum position as coordinated with the balancing con

tractor. The sequence shall differentiate between operating time schedules and occupiedoperating time schedules.


98



February 27, 2107

3.7

c. The compressors shall be energized and sequenced to maintain the supply air temperature

setpoint (current setting).

d. If the AHU has been operating for over 60 minutes and the return air CO2 is below the

operator defined high limit, then the outside damper shall be positioned to the 75% of full

open position. The CO2 sensor shall then through a DDC controller, modulate the outside

air damper to maintain the CO2 setpoint.

4. Setpoints - The setpoints for the system shall be determined as follows:

a. The setpoint for high static shutdown shall be set initially at 2.5 inches w.g.

b. The return air CO2 reset limit shall be initially set at 800 ppm(adj.).

5. Initiation of System Shutdown - System shutdown shall be initiated:

a. By operator entered manual command.b. Automatically by the CS when there are no terminal units requiring primary air.

c. High static pressure shut down.

6. Alarms - The CS shall generate an alarm:a. If the duct static pressure is outside the operator established low and high alarm limits, in

itially set at 0.5 and 1.5 inches w.g.b. If the supply air temperature is outside the operator established low and high limits,

which shall be set at + or - 4 Deg. F. around the current setpoint.c. All alarms shall be inhibited when the supply fan is not operating except the space tem

perature alarms. The alarms, except the fan failure to start and failure in service alarms

and the space temperature alarms, shall remain inhibited following start up of the unit for

an operator determined period of time initially set at 2 minutes.

d. If the space humidity is above 75 % RH.e. If the return air CO2 is above the operator established limit, initially set at 1100 ppm

(adj).

E. SYSTEM - EMERGENCY OUTSIDE AIR SHUTDOWN

A.

B.

C. D.

E. F.

G.

H.

I. System Off - When the system is off:

a. The fans and dampers shall operate under their normal sequences.

2. Initiation of System Start-Up - System start-up shall be initiated:

a. By an operator manually pushing the shutdown button.

3. System Operation:a. If the shutdown button is pressed, all outside air intake dampers shall close, all I 00% out

side air units shall shut down and the building exhaust fans shall be shut down.

CS POINT SCHEDULES

The following schedules define the minimum monitoring and control functions to be undertaken by the CS.

The column headed POINT provides an English language description of the point to be monitored

or controlled.

The column headed BI indicates digital input monitoring.

The column headed BO indicate digital output control.

The column headed AI indicates analog input monitoring. The column headed AO indicates analog output control.

The column headed HI indicated hardwired interface. The column headed CI indicates digital communications interface to a third party monitoring or controlling device.


99



POINT SCHEDULE: ROOFTOP UNIT

POINT BI

SMOKE DETECTOR X

CLOGED COIL SWITCH X

GAS HEATING CONTROL

COOLING CONTROL

MODULATING COMPRESSOR

CONTROL

RETURN AIR CO2

SUPPLY FAN VSD START AND STOP

SUPPLY FAN VSD SPEED CONTROL

SIGNAL

SUPPLY FAN VSD MOTOR OPERA TING X

STATUS

HIGH STATIC SHUTDOWN X

SUPPLY AIR TEMPERATURE

SUPPLY STATIC PRESSURE

RETURN AIR TEMPERATURE

POINT SCHEDULE: VENTILATION FANS

POINT BI BO

FAN CONTROL START/STOP X

FAN STATUS X

SPACE TEMPERATURE

SUPPLY AIR TEMPERATURE

SHUT-OFF DAMPER X

BO AI

X

X

X

X

X

X

X

AI AO

X

X

END OF SECTION

INSTRUMENTATION AND CONTROL FOR HVAC

February 27, 2107

AO NOTES

X

X

INTERLOCKED TO SHUT DOWN

UNIT UPON ACTIVATION

NOTES

23 09 00 - 31

100

23 11 23FACILITY

NATURAL-GAS PIPING

101



SECTION 23 11 23 FACILITY NATURAL-GAS PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes piping, specialties, and accessories for natural gas systems.

1.2 REFERENCES


1. American National Standards Institute (ANSI):

a. 221.15 - Manually Operated Gas Valves for Appliances, Appliance Connector

Valves, and Hose End Valves.

b. 221.18 - Gas Appliance Pressure Regulators.

c. 221.41 - Quick-Disconnect Devices for Use with Gas Fuel.

d. Z21.41a - Quick-Disconnect Devices for Use with Gas Fuel (Supplement to ANSI

221.41).

e. 221.41 b - Quick-Disconnect Devices for Use with Gas Fuel (Supplement to ANSI

221.41 and ANSI Z21.41a).


a. A53 - Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless.


a. B 1.20.1 - Pipe Threads, General Purpose (Inch).

b. B 16.1 - Cast Iron Pipe Flanges and Flanged Fittings.

c. B 16.3 - Malleable Iron Threaded Fittings.

d. B16.9 - Factory-Made Wrought Steel Buttwelding Fittings.

e. B l6.33 - Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up

to 25 psig (Sizes 1/2 through 2).

4. American Welding Society (A WS):

a. A5.8 - Filler Metals for Brazing, and Braze Metals.

5. Manufacturers Standardization Society of the Valve and Fittings Industry (MSS):

a. SP-69 - Pipe Hangers and Supports - Selection and Application.

b. SP-78 - Cast Iron Plug Valves, Flanged and Threaded Ends.

6. National Electrical Manufacturers Association (NEMA):

a. ISC 6 - Industrial Controls and Systems Enclosures.

7. National Fire Protection Association (NFPA):

a. 54 - National Fuel Gas Code.

b. 70 - National Electrical Code.

8. Steel Structures Painting Council (SSPC):

a. Paint 16 - Paint Specification No. 16: Coal Tar Epoxy-Polyamide Black (or Dark

Red) Paint.

1.3 DEFINITIONS

A. Low-Pressure Natural Gas Piping: Operating pressure of 0.5 psig or less.

FACILITY NATURAL-GAS PIPING 23 11 23 - 1

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February 27, 2107

B. Medium-Pressure Natural Gas Piping: Operating pressure greater than 0.5 psig, but not greater

than 2 psig.

C. High-Pressure Natural Gas Piping: Operating pressure greater than 2 psig, but not greater than

5 psig.

1.4 SYSTEM PERFORMANCE REQUIREMENTS

1.5

1.6

A. Minimum Working-Pressure Ratings: Except where otherwise indicated, minimum pressure

requirements are as follows:

1. Low-Pressure Natural Gas Piping: 2 psig.

2. Medium-Pressure Natural Gas Piping: 10 psig.

3. High-Pressure Natural Gas Piping: 20 psig.

B. Approximate values of natural gas supplied for these systems are as follows:

A.

B.

C.

D.

A.

1. Heating Value: 1000 Btu/cu. ft.

2. Specific Gravity: 0.6.

3. Service Line Pressure: 15 to 20 psig.

SUBMITTALS

General: Submit each item in this Article in accordance with Section 23 05 00 - Common

Work Results for Mechanical.

Product Data for each type of natural gas specialty and special-duty valve. Include pressure

rating, rated capacity, and settings of selected models.

Test reports specified in "Field Quality Control" Article in Part 3.

Maintenance data for natural gas specialties and special-duty valves to include in the operation

and maintenance manual specified in Section 23 05 00.

QUALITY ASSURANCE

Comply with NFP A 54 for gas piping materials and components; installations; and inspecting,

testing, and purging.

B. Comply with NFP A 70 for electrical connections between wiring and electrically operated

control devices.

C. Provide listing/approval stamp, label, or other marking on equipment made to specified

standards.

D. Listing and Labeling: Provide equipment and accessories specified in this Section that are

listed and labeled.

1. Terms "Listed" and "Labeled": As defined in National Electrical Code, Article 100.

2. Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing

Laboratory" (NRTL) as defined in OSHA Regulation 1910.7.


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February 27, 2107

A. Handling Flammable Liquids: Remove and legally dispose of liquids from drips in existing gas

piping. Handle cautiously to avoid spillage and ignition. Notify gas supplier. Handle flammable

liquids used by Installer with proper precautions and do not leave on premises from end of one

day to beginning of next day.


A. Notification of Interruption of Service: Notify each affected user when gas supply will be

turned off.

B. Work Interruptions: Leave gas piping systems in safe condition when interruptions in work

occur during repairs or alterations to existing gas piping systems.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:1. Gas Stops, 2-Inch NPS and Smaller:

a. Hammond Valve Corp.

b. Jomar International, Ltd.

c. Maxitrol Co.

d. McDonald: A.Y. McDonald Mfg. Co.

e. Milwaukee Valve Co., Inc.

f. Mueller Co.

g. National Meter.

2. Gas Valves, 2-Inch NPS and Smaller:

a. Conbraco Industries, Inc.; Apollo Div.

b. Core Industries, Inc.; Mueller Steam Specialty Div.

c. Huber: J.M. Huber Corp.; Flow Control Div.

d. McDonald: A.Y. McDonald Mfg. Co.

e. Milliken Valve Co., Inc.

f. Milwaukee Valve Co., Inc.

g. Mueller Co.

h. National Meter.

1. Nordstrom Valves, Inc.

j. Olson Technologies, Inc.

3. Gas Valves, 2-1/2-Inch NPS and Larger:

a. Core Industries, Inc.; Mueller Steam Specialty Div.

b. Huber: J.M. Huber Corp.; Flow Control Div.

c. Milliken Valve Co., Inc.

d. Nordstrom Valves, Inc.

e. Olson Technologies, Inc.

f. Xomox Corp.

4. Solenoid Valves:


104



a. Atkomatic Valve Co., Inc.

b. Automatic Switch Co.

c. Goyen Valve Corp.

d. Honeywell, Inc.; Skinner Valve Div.

e. ITT Fluid Technology Corp.; ITT Controls.

f. Magnatrol Valve Corp.

5. Gas Pressure Regulators:

a. American Meter Co.

b. Equimeter, Inc.

c. Fisher Controls International, Inc.

d. Maxitrol Co.

e. National Meter.

f. Richards Industries, Inc.; Jordan Valve Div.

g. Schlumberger Industries; Gas Div.

2.2 PIPES AND TUBES

February 27, 2107

A. Steel Pipe: ASTM A53; Type E, electric-resistance welded or Type S, seamless; Grade B;

Schedule 40; black.

2.3 PIPE AND TUBE FITTINGS

A. Malleable-Iron Threaded Fittings: ASME B16.3, Class 150, standard pattern, with threaded ends

conforming to ASME Bl.20.1.

B. Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint, and

threaded ends conforming to ASME B 1.20.1.

C. Cast-Iron Flanges and Flanged Fittings: ASME Bl6.1, Classes 125 and 250.

D. Steel Fittings: ASME B16.9, wrought steel, butt-welding type; and ASME B16.l 1, forged steel.

E. Transition Fittings: Type, material, and end connections to match piping being joined.

2.4 JOINING MATERIALS

A. Common Joining Materials: Refer to Section 23 05 00 for joining materials not included in this

Section.

B. Joint Compound and Tape: Suitable for natural gas.

C. Gasket Material: Thickness, material, and type suitable for natural gas.


105



2.5 VALVES

February 27, 2107

A. Manual Valves: Conform to standards listed or, where appropriate, to ANSI Z21.15.

B. Gas Stops, 2-Inch NPS and Smaller: AGA-certified, bronze-body, plug type with bronze plug, ball

type with chrome-plated brass ball, or butterfly valve with stainless-steel disc and fluorocarbon

elastomer seal, for 2 psig or less natural gas. Include AGA stamp, flat or square head or lever

handle, and threaded ends conforming to ASME B 1.20.1.

C. Gas Valves, 2-Inch NPS and Smaller: ASME B16.33, 125 psig WOG, cast-iron body, bronze plug,

straightaway pattern, square head, tapered-plug type, with threaded ends conforming to

ASME B l.20.1.

D. Gas Valves, 2-1/2-Inch NPS and Larger: MSS SP-78, Class 125 or Class 175 WOG, lubricated

plug type, semisteel body, wrench operated, with flanged ends.

1. Locking Device: Include locking ( tamperproof) feature.

2.6 SPECIAL TY VAL YES

A. Automatic Shutoff Valves: ANSI Z21.21, for operation by appliance automatic shutoff device. 2-

inch NPS and smaller with threaded ends conforming to ASME B 1.20.1 and 2-1/2-inch NPS and

larger with flanged ends.

1. Operation: Mechanical.

B. Solenoid Valves: Bronze, aluminum, or cast-iron body; 120 V AC, 60 Hz, Class B continuous-duty

molded coil; UL labeled and FM approved. Include NEMA ISC 6, Type 4, coil enclosure and

electrically opened and closed dual coils. Valve position is normally closed. Include threaded ends

conforming to ASME B 1.20.1 for 2-inch NPS and smaller and flanged ends for 2-1/2-inch NPS and

larger.

2. 7 PIPING SPECIAL TIES

A. Gas Pressure Regulators: ANSI Z2 l .18, single-stage, steel-jacketed, corrosion-resistant pressure

regulators. Include atmospheric vent, elevation compensator, with threaded ends conforming to

ASME B l.20.1 for 2-inch NPS and smaller and flanged ends for 2-1/2-inch NPS and larger.

Regulator pressure ratings, inlet and outlet pressures, and flow volume in cubic feet per hour of

natural gas at specific gravity are as indicated.

1. Appliance Gas Pressure Regulators: Inlet pressure rating not less than system pressure, with

capacity and pressure setting matching appliance.

2. Gas Pressure Regulator Vents: Factory- or field-installed corrosion-resistant screen in

opening when not connected to vent piping.

B. Flexible Connectors: ANSI Z2 l .24, copper alloy.

C. Strainers: Y pattern, full size of connecting piping. Include stainless-steel screens with 3/64-inch

perforations, except where other screens are indicated.

1. Pressure Rating: 125-psig minimum steam or 175-psig WOG working pressure, except where

otherwise indicated.


106



2. 2-Inch NPS and Smaller: Bronze body, with threaded ends conforming to ASME B 1.20.1.

3. 2-1/2-Inch NPS and Larger: Cast-iron body, with flanged ends.

4. Screwed screen retainer with centered blow-down and pipe plug.

D. Quick-Disconnect Devices: ANSI Z21.41, ANSI Z21.41a, and ANSI Z21.41b convenience outlets

and matching plug connector.

PART 3 - EXECUTION

3.1 PREPARATION

A. Close equipment shutoff valves before turning off gas to premises or section of piping. Perform

leakage test as specified in "Field Quality Control" Article to determine that all equipment is turned

off in affected piping section.

B. Comply with NFP A 54 Paragraph "Prevention of Accidental Ignition."

3.2 PIPING APPLICATIONS

A. General: Flanges, unions, transition and special fittings, and valves with pressure ratings same as or

higher than system pressure rating may be used in applications below, except where otherwise

indicated.

B. Low-Pressure, 0.5 psig or Less, Natural Gas Systems: Use the following:

1. I-Inch NPS and Smaller: Steel pipe, malleable-iron threaded fittings, and threaded joints.

2. 1-1/4- to 2-Inch NPS: Steel pipe, malleable-iron threaded fittings, and threaded joints.

3. 2-1/2- to 4-Inch NPS: Steel pipe, butt-welding fittings, and welded joints.

4. 4-Inch NPS and Larger: Steel pipe, butt-welding fittings, and welded joints.

C. Medium-Pressure, 0.5 to 2 psig, Natural Gas Systems: Use the following:

1. I-Inch NPS and Smaller: Steel pipe, butt-welding fittings, and welded joints.

2. 1-1/4-Inch NPS and Larger: Steel pipe, butt-welding fittings, and welded joints.

D. High-Pressure, 2 to 5 psig, Natural Gas Systems: Steel pipe, butt-welding fittings, and welded

joints.

E. Underground Natural Gas Systems, All Pressures: Steel pipe, butt-welding fittings, and welded

joints. Encase gas carrier piping in containment conduits.

F. Underground Containment Conduits: Steel pipe, butt-welding fittings, and welded joints. Provide

proper vent required by Code.

3 .3 VAL VE APPLICATIONS

A. Use gas stops for shutoff to appliances with 2-inch NPS or smaller low-pressure gas supply.


107



February 27, 2107

B. Use gas valves for shutoff to appliances with 2-1/2-inch NPS or larger low-pressure gas supply and

all sizes for medium-pressure gas supply.

3.4 PIPING INSTALLATIONS

A. Refer to Section 23 05 00 for basic piping installation requirements.

B. Concealed Locations: Except as specified below, install concealed gas piping in airtight conduit

constructed of Schedule 40, seamless, black steel pipe with welded joints. Vent conduit to outside

and terminate with screened vent cap.

1. Above-Ceiling Locations: Gas piping may be installed in accessible spaces, subject to

approval of authorities having jurisdiction, whether or not such spaces are used as plenums.

Do not locate valves in such spaces.

2. In Partitions: Do not install concealed piping in solid partitions. Protect tubing from physical

damage when installed inside partitions or hollow walls.

a. Exception: Tubing passing through partitions or walls.

3. In Walls: Gas piping with welded joints and approved protective wrapping may be installed in

masonry walls, subject to approval of authorities having jurisdiction.

4. Prohibited Locations: Do not install gas piping in or through circulating air ducts, gas vents,

ventilating ducts, or elevator shafts.

C. Drips and Sediment Traps: Install drips at points where condensate may collect. Include outlets of

gas meters. Locate where readily accessible to permit cleaning and emptying. Do not install where

condensate would be subject to freezing.

1. Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped.

Use minimum-length nipple of 3 pipe diameters, but not less than 3 inches long, and same size

as connected pipe. Install with space between bottom of drip and floor for removal of plug or

cap.

D. Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade, except

where indicated to be exposed to view.

E. Install gas piping at uniform grade of 0.1 % slope upward toward risers.

F. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side down.

G. Connect branch piping from top or side of horizontal piping.

H. Install unions in pipes 2-inch NPS and smaller, adjacent to each valve, at final connection to each

piece of equipment, and elsewhere as indicated. Unions are not required on flanged devices.

I. Install strainers on supply side of each control valve, gas pressure regulator, solenoid valve, and

elsewhere as indicated.

J. Install dielectric fittings (unions and flanges) with ferrous and brass or bronze end connections,

separated by insulating material, where piping of dissimilar metals is joined.

K. Install flanges on valves, specialties, and equipment having 2-1/2-inch NPS and larger connections.


108



February 27, 2107

L. Anchor piping to ensure proper direction of piping expansion and contraction. Install expansion

joints, expansion loops, and pipe guides as required.

M. Install containment conduits for gas piping below slabs, within building, in gastight conduits

extending minimum of 4 inches outside building, and vented to atmosphere. Terminate vents with

turned-down, reducing-elbow fittings with corrosion-resistant insect screens in large end. Prepare

and paint outside of conduits with coal-tar epoxy-polyamide paint according to SSPC-Paint 16.

3.5 JOINT CONSTRUCTION

A. Refer to Section 23 05 00 for basic piping joint construction.

B. Use materials suitable for natural gas service.

3.6 VALVE INSTALLATION

A. Install valves in accessible locations, protected from damage. Tag valves with metal tag indicating

piping supplied. Attach tag to valve with metal chain.

1. Refer to Section 23 05 00 for valve tags.

B. Install pressure relief or pressure-limiting devices so they can be readily operated to determine if

valve is free; test to determine pressure at which they will operate; and examine for leakage when

in closed position.

3.7 HANGER AND SUPPORT INSTALLATION

A. Refer to Section 23 05 29 - Hangers and Supports for pipe hanger and support devices.

B. Install hangers for horizontal steel piping with the following maximum spacing and minimum rod

sizes:

1. I-Inch NPS: Maximum span, 96 inches; minimum rod size, 3/8-inch.

2. 2-Inch NPS: Maximum span, 108 inches; minimum rod size, 3/8-inch.

3. 3-Inch NPS: Maximum span, 10 feet; minimum rod size, 1/2-inch.

4. 4-Inch NPS and Larger: Maximum span, 10 feet; minimum rod size, 5/8-inch.

3.8 CONNECTIONS

A. Install gas piping next to equipment and appliances using gas to allow service and maintenance.

B. Connect gas piping to equipment and appliances using gas with shutoff valves and unions. Install

gas valve upstream from and within 72 inches of each appliance using gas. Install union or flanged

connection downstream from valve. Include flexible connectors when indicated.

C. Sediment Traps: Install tee fitting with capped nipple in bottom forming drip, as close as practical

to inlet for appliance using gas.

D. Electrical Connections: Wiring is specified in Division 26.


109



3.9 ELECTRICAL BONDING AND GROUNDING

February 27, 2107

A. Install aboveground portions of natural gas piping systems that are upstream from equipmentshutoff valves, electrically continuous, and bonded to grounding electrode according to NFP A 70.

B. Do not use gas piping as grounding electrode.

3.10 FIELD QUALITY CONTROL

A. Inspect, test, and purge piping according to NFPA 54, Part 4 "Gas Piping Inspection, Testing, and

Purging" and requirements of authorities having jurisdiction.

B. Repair leaks and defects with new materials and retest system until satisfactory results are obtained.

C. Report test results promptly and in writing to Angleton Recreation Center, City of Angleton.

D. Verify correct pressure settings for pressure regulators.

E. Verify that specified piping tests are complete.

3.11 ADJUSTING

A. Adjust controls and safety devices. Replace damaged and malfunctioning controls and safety

devices.

END OF SECTION


110

23 31 13METAL DUCTS

111


February 27, 2107

SECTION 23 31 13 - MET AL DUCTS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes rectangular and round metal ducts and plenums for ventilating and air

conditioning systems in pressure classes from minus 2- to plus 10-inch wg.

B. Related Work Specified Elsewhere:

1. Fire-resistant sealants for use around duct penetrations and fire-damper installations in fire-rated

floors, partitions, and walls: Division 07.

2. Dampers, sound-control devices, duct-mounted access doors and panels, turning vanes, and

flexible ducts: Section 23 33 00 - Air Duct Accessories.

1.2 REFERENCES



a. A36 - Carbon Structural Steel.

b. Al67-99 Standard Specification for Stainless and Heat-Resisting Chromium-Nickle Steel

Plate, sheet and strip.

c. Al01 l-09a - Standard Specification for Steel, sheet and Strip, Hot Rolled, Carbon,

Structural, High-Strength Low-Allow, High Strength Low-Allow with improved

Formability, and Ultra-High Strength.

d. C 168 - Standard Terminology Relating to Thermal Insulating Materials.

e. C41 l - Test Method for Hot-Surface Performance of High-Temperature Thermal

Insulation.

f. C920 - Elastomeric Joint Sealants.

2. National Fire Protection Association (NFP A):

a. 90A - Installation of Air Conditioning and Ventilating Systems.

3. Sheet Metal and Air Conditioning Contractors' National Association (SMACNA):

a. HV AC Duct Construction Standards - Metal and Flexible.

1.3 DEFINITIONS

A. Thermal Conductivity and Apparent Thermal Conductivity (k-Value): As defined in ASTM Cl 68. In

this Section, these values are the result of the formula Btu x in./h x sq. ft. x deg F at the temperature

differences specified. Values are expressed as Btu.

1. Example: Apparent Thermal Conductivity (k-Value): 0.26 or 0.037.

1.4 SYSTEM DESCRIPTION

A. Duct system design, as indicated, has been used to select and size air-moving and -distribution

equipment and other components of air system. Changes to layout or configuration of duct system

must be specifically approved in writing by Angleton Recreation Center, City of Angleton.

Accompany requests for layout modifications with calculations showing that proposed layout will

provide original design results without increasing system total pressure.

METAL DUCTS 23 31 13 - 1

112



1.5 SUB MITT ALS

February 27, 2107


Mechanical.

B. Shop Drawings: Show details of the following:

1. Duct layout indicating pressure classifications and sizes on plans.

2. Fittings.

3. Penetrations through fire-rated and other partitions.

4. Hangers and supports, including methods for building attachment, vibration isolation, seismic

restraints, and duct attachment.


A. Welding Standards: Qualify welding procedures and welding personnel to perform welding processes

for this Project according to AWS Dl.1, "Structural Welding Code--Steel," for hangers and supports;

AWS Dl .2, "Structural Welding Code--Aluminum," for aluminum supporting members; and

A WS D9. l , "Sheet Metal Welding Code," for duct joint and seam welding.

B. Comply with NFP A 90A, "Installation of Air Conditioning and Ventilating Systems," unless

otherwise indicated.


A. Deliver sealant and firestopping materials to site in original unopened containers or bundles with

labels indicating manufacturer, product name and designation, color, expiration period for use, pot

life, curing time, and mixing instructions for multicomponent materials.

B. Store and handle sealant and firestopping materials according to manufacturer's written

recommendations.

PART 2 - PRODUCTS

2.1 SHEET MET AL MATERIALS

A. 304 Stainless Steel, Sheet Steel: Lock-forming quality; ASTM A653, G90 coating designation; mill

phosphatized finish for surfaces of ducts exposed to view.

B. Reinforcement Shapes and Plates: Galvanized steel reinforcement where installed on galvanized,

sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.

C. Tie Rods: 304 Stainless Steel, 1/4-inch minimum diameter for 36-inch length or less; 3/8-inch

minimum diameter for lengths longer than 36 inches.

2.2 SEALANT MATERIALS

A. Joint and Seam Sealants, General: The term "sealant" is not limited to materials of adhesive or mastic

nature but includes tapes and combinations of open-weave fabric strips and mastics.

1. Joint and Seam Tape: 2 inches wide; glass-fiber fabric reinforced.


113



3.4 CONNECTIONS

February 27, 2107

A. Connect equipment with flexible connectors according to Section 23 33 00 - Air Duct Accessories.

B. For branch, outlet and inlet, and terminal unit connections, comply with SMACNA's "HV AC Duct

Construction Standards--Metal and Flexible."

3.5 CLEANING

A. After completing system installation, including outlet fittings and devices, inspect the system.

Vacuum ducts before final acceptance to remove dust and debris.

END OF SECTION


116

23 33 00AIR DUCT

ACCESSORIES

117

23 34 00HVAC FANS

124

23 41 00PARTICULATE

AIR FILTRATION

130

23 81 03PACKAGED ROOFTOP AIR CONDITIONING UNITS -

NON-CUSTOM

134

26 05 00COMMON WORK

RESULTS FOR ELECTRICAL

140

26 05 19LOW-VOLTAGE

ELECTRICAL POWER CONDUCTORS AND

CABLES

146

26 05 26GROUNDING AND

BONDING FOR ELECTRICAL SYSTEMS

152

26 05 33RACEWAY AND BOXES

FOR ELECTRICAL SYSTEMS

158

26 05 53IDENTIFICATION FOR ELECTRICAL SYSTEMS

169

26 27 26WIRING DEVICES

174

26 28 16ENCLOSED SWITCHES

AND CIRCUIT BREAKERS

179

PLAN & PROFILES

183