Copyright 2010 Carrier Corporation Form 30MP-1PD

AquaSnap packaged liquid and con-denserless chillers feature a rugged, compact modular design for quick and easy installation. The modular chill-ers cover a wide range of applications from ice to heat recovery and various combinations can be easily combined to meet the required plant capacity. Flexible modular design, compact size, and user friendly controls make the 30MP chillers an optimal choice for reliable cooling.

Value-added features include:

• rotary scroll compression• HFC Puron® refrigerant (R-410A)• low sound• easy to use ComfortLink controls• application flexibility• energy efficiency• modular design

Features/BenefitsEasy to install, scroll chillers offer cost-effective and reliable cooling.Installation easeThe 30MP units are designed to re-duce installation time and costs. They arrive at the jobsite able to fit easily through a standard 36-in. door open-ing (762 mm) due to their compact de-sign. The 30MP units include fork pockets in the frame for use with fork-lifts or pallet jacks. Optional mobility and height adjustment kits allow units to quickly roll into place and mate with existing piping. Mobility kit wheels are rubber type, pivot for easy unit maneu-vering, and are lockable for safety.

AQUASNAP®

30MPA,MPW015-045Liquid Chillers

with Scroll Compressorsand COMFORTLINK™ Controls

15 to 45 Nominal Tons(53 to 158 kW)

ProductData

30MPA

30MPW

a30-5029

a30-5030

2

The 30MP height adjustment kit pro-vides a height adjustment mechanism located in each corner of the unit to aid in leveling and facilitate connection to existing piping. The ability to roll the 30MP chiller into most elevators and through most doors combined with the ability to adjust the unit height to match existing piping helps significant-ly to lower installation expense. The 30MP units come complete with an insulated evaporator, condenser (30MPW), compressors, controls, re-frigerant charge (30MPW), TXV (ther-mostatic expansion valve), filter drier, sight glass, entering and leaving chilled fluid temperature sensors, evaporator water pressure access port, factory in-stalled evaporator flow switch, oil charge, and need only the addition of a condenser water supply (30MPW), electrical power, and chilled fluid distri-bution system. The 30MPA units are designed for use with a remote con-denser and include a liquid line isola-tion valve, liquid line solenoid valve, and have a nitrogen holding charge. The 30MPA chillers may be connected to an air-cooled, evaporative condens-er(s) or even liquid condenser(s) sized to meet specific job requirements. All internal piping and wiring is com-plete, and since all essential controls and protective devices are installed at the factory, installation is completed in minimal time. The 60-Hz units are ETL and ETL, Canada listed and con-form to ASME (American Society of Mechanical Engineers) standards, sim-plifying the final inspection process.

Operating reliability and serviceabilityThe 30MP chiller uses the same com-pressor sub-assemblies and heat ex-changers that are proven to be reliable in Aquasnap® chillers in service around the world. Each unit includes many safeties as standard, including protec-tion from electrical overload, thermal overload, loss of phase, reverse rota-tion, high pressure, low refrigerant charge, and low chilled fluid tempera-ture. A factory-installed thermal disper-sion switch containing no moving parts provides reliable low flow and loss of flow protection. Heat exchangers

feature ANSI (American National Stan-dards Institute) 316 stainless steel brazed-plate construction. The modular design of the 30MP chiller allows units to be installed side by side with no clearance between units to achieve higher capacity. Since each circuit has its own dedicated pow-er supply and controls transformer, an individual chiller can be isolated and serviced while other units continue to operate. The remaining units can pro-vide a supply of chilled water even while a single chiller is down, providing true redundancy and ease of mind.

ComfortLink™ controlsThe ComfortLink controls communi-cate in plain English, making it as easy as possible to monitor and control each Aquasnap chiller while accurately maintaining fluid temperatures. The large scrolling marquee display acts as a window into the unit’s operation, providing easy-to-read information about chiller performance and over 15 diagnostic functions. The Carrier 30 Series chillers’ ComfortLink controls provide features such as chilled water temperature reset, compressor wear minimization and protection. They also display temperature, pressure and oth-er valuable unit operating information. The 30MP chillers employ more than the latest advanced microprocessor controls, they utilize an expandable platform that can adjust as needs change. ComfortLink controls are used in diverse applications from stand-alone operation to remotely monitored and operated multi-chiller plants. The scrolling marquee display also features Spanish, French, and Portuguese languages.

Operating efficiency and flexibilityThe 30MP chillers exceed ASHRAE (American Society of Heating, Refrig-erating, and Air Conditioning Engi-neers) 90.1 minimum efficiency re-quirements. At full load, 30MP chillers provide efficiencies exceeeding0.775 kW/ton at AHRI standard con-ditions. The 30MP chillers use ultra quiet, high-efficiency scroll compres-sors, operated in tandem or trio for

greater efficiency at partial loads. The 30MP chillers can also be operated with variable flow, allowing building owners to realize even greater overall system energy savings in the chilled water pumping system. The 30MP chillers also feature a wide, flexible operating range. Stan-dard units can provide up to 140 F leaving condenser water temperature for heat recovery applications while chillers equipped with the medium temperature brine option can provide leaving chilled fluid temperatures down to 15 F for ice build and process cool-ing. Units have the capability to start and pull down with up to 95 F (35 C) entering-fluid temperature due to the integral pressure limiting feature of the expansion valve. Whether in the classroom, on the production floor, or in the office, Com-fortLink controls can assist in adapta-tion to changing weather and business conditions. Accurate temperature con-trol, provided by Carrier’s Com-fortLink system, helps to maintain higher levels of indoor air quality, ther-mal comfort, and space productivity. While many chillers use only leaving fluid temperature control, the 30MP chillers utilize leaving fluid temperature control with entering fluid temperature compensation. This Carrier exclusive provides smart control and intelligent machine capacity staging.

Energy management made easyWhile 30MP chillers have many stan-dard features, such as network commu-nications capability and temperature reset based on return fluid tempera-ture, they can also expand as needs change. Supply temperature reset based on outside air or space tempera-ture is as easy as adding a thermistor. The energy management option allows use of changing utility rate structures with easy to use load shedding, de-mand limiting and temperature reset capabilities. Reset triggered via a 4 to 20 mA (requires EMM [energy man-agement module] option) signal makes integrating from an existing building management system simple.

Features/Benefits (cont)

3

Table of contentsPage

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4AHRI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6,7Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8,9Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10,11Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16,17Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19,20Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21,22Typical Control Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-27

LEAVING FLUID TEMPERATURE 44.1° FRun Status

Service Test

Temperature

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

Alarm Status

ENTER

MODE

ESCAPE

30MP COMPACT SIZE SCROLL COMPRESSOR

SCROLLING MARQUEE CLEAR LANGUAGE DISPLAY

a30-5031a30-5029

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30MP A 030 6 -

30MP – Aquasnap® Liquid Chiller with ComfortLink™ Controls

Condenser OptionA – Chiller without Condenser (Air-Cooled)

Design Revision Level

W – Chiller with Condenser (Water-Cooled)

- – Initial Release

Voltage Options1 – 575-3-60

5 – 208/230-3-606 – 460-3-60

Unit Size – Nominal Tons (kW)015 – 15 (54) 040 – 40 (138)020 – 20 (71) 045 – 45 (161)030 – 30 (108)

2 – 380-3-60

0

Sound/Mounting Options0 – None1 – Sound Enclosure Panels3 – Height Adjustment Kit4 – Height Adjustment Kit, Sound Enclosure Panels9 – Mobility Kit (Wheels)B – Mobility Kit (Wheels), Sound Enclosure PanelsD – Height Adjustment Kit, Mobility Kit (Wheels)F – Height Adjustment Kit, Mobility Kit (Wheels), Sound Enclosure Panels

0

Comfort Cooling/Medium Temp Brine Options0 – Comfort Cooling Duty (32-60 F) (Std)7 – Medium Temperature Brine (15-32 F)

0

Capacity Control Options0 – Standard1 – Hot Gas Bypass

0

Disconnect Options0 – Standard (Terminal Block)1 – Non-Fused Disconnect Switch

0

Controls/Interface Options0 – Scrolling Marquee Display (Std)5 – Scrolling Marquee Display, EMM

5

Packaging Options

5 – BagB – Export Crate

LEGENDEMM — Energy Management ModuleLON — Local Operating NetworkUPC — Unitary Protocol Controller

Model number nomenclature

5

AHRI RATINGS (60 Hz only)

LEGEND

NOTES:1. Certified (60 Hz unit) in accordance with AHRI Standard 550/590

at standard rating conditions.2. Standard rating conditions are as follows:

Evaporator Conditions:Leaving Water Temperature: 44 F (6.7 C)Flow: 2.4 gpm per ton (0.043 L/s per kW)

Condenser Conditions:Entering Water Temperature:85 F (29.4 C)Flow: 3.0 gpm per ton (0.054 L/s per kW)

Fouling Factor (Evaporator):0.00010 hr x sq ft x F per Btuh (0.000018 m2 x K per W)

Fouling Factor (Condenser):0.00025 hr x sq ft x F per Btuh (0.000044 m2 x K per W)

3. IPLV is a single number part-load efficiency value calculated fromthe system full-load efficiency values and corrected for a typicalbuilding air-conditioning application.

4. All data in this table is rated (60 Hz only) in accordance with AHRIStandard 550/590 as represented in the Packaged Chiller BuilderSelection Program (E-Cat) version 3.29.

5. Contact Carrier for custom ratings or for 30MPA remote air-cooledunit ratings.

UNIT30

CAPACITY INPUTPOWER

(kW)

EVAPORATORFLOW

EVAPORATORPRESSURE

DROP

CONDENSERFLOW

CONDENSERPRESSURE

DROP EERFULL LOAD IPLV

Tons kW Gpm L/s Ft ofWater kPa Gpm L/s Ft of

Water kPa IkW/Ton COP IkW/Ton COP

MPW015 15.6 54.7 12.4 37.4 2.4 11.8 35.1 46.7 2.9 11.5 34.4 15.1 0.795 4.43 0.564 6.24MPW020 20.7 72.8 15.6 49.8 3.1 14.9 44.6 62.2 3.9 13.4 40.1 15.9 0.753 4.67 0.585 6.01MPW030 31.0 109.1 23.6 74.5 4.7 14.0 42.0 93.1 5.9 13.1 39.1 15.8 0.760 4.63 0.578 6.08MPW040 39.9 140.4 30.2 95.9 6.1 9.7 28.9 119.9 7.6 14.9 44.6 15.9 0.756 4.65 0.560 6.28MPW045 46.6 163.8 35.1 111.9 7.1 12.2 36.4 139.9 8.8 14.6 43.7 15.9 0.753 4.67 0.568 6.20

AHRI — Air Conditioning, Heating and Refrigeration InstituteIkW — Input KilowattIPLV — Integrated Part Load Value

AHRI* capacity ratings

6

30MPA AIR-COOLED AND 30MPW LIQUID-COOLED UNITS — ENGLISH

* With optional hot gas bypass. NOTES:1. Operating weight includes refrigerant operating charge and weight

of fluid in the heat exchangers.2. 30MPW units are shipped with full operating charge.

UNIT 30MPA,MPW 015 020 030 040 045NOMINAL TONS 15 20 30 40 45OPERATING WT (lb)

MPA 626 635 722 913 934MPW 680 704 862 1099 1190

REFRIGERANT (lb) R-410AMPA — — — — —MPW 11.6 15.2 23.1 29.4 34.4

COMPRESSOR Scroll, HermeticQuantity 2 2 2 3 3Speed (rpm) 3500 3500 3500 3500 3500Compressor Nominal Tons 7.5 10 15 13 15Oil Charge (pt) 10.6 13.8 13.8 20.6 20.6Capacity Control — Standard

No. of Steps 2 2 2 3 3Minimum Step Capacity (%) 50 50 50 33 33

Capacity Control — Optional Hot Gas BypassNo. of Steps 3 3 3 4 4Minimum Step Capacity (%) 18 25 34 21 22

EVAPORATORWeight (lb, empty) 27.5 40.3 91.8 122.3 128.3Net Fluid Volume (gal.) 0.8 1.2 2.4 3.2 3.4Maximum Refrigerant Pressure (psig) 650 650 650 650 650Maximum Fluid-Side Pressure (psig) 300 300 300 300 300Water Connections (in.)

Inlet and Outlet (Victualic) 2 2 21/2 2 1/2 21/2Drain (NPT) 1/2 1/2 1/2 1/2 1/2

CONDENSER (30MPW Only)Weight (lb, empty) 34.9 43.6 104.6 136.7 188.3Net Fluid Volume (gal.) 1.2 1.6 2.9 4.1 5.9Maximum Refrigerant Pressure (psig) 650 650 650 650 650Maximum Fluid-Side Pressure (psig) 300 300 300 300 300Water Connections (in.)

Inlet and Outlet (Victualic) 2 2 21/2 2 1/2 21/2CHASSIS DIMENSIONS (in.)

Length 55 55 55 55 55Width 32 32 32 32 32Height 63 63 63 63 63

MINIMUM SYSTEM FLUID VOLUME (gal. per Ton)Normal Air Conditioning Standard 6 6 6 4 4 Optional Hot Gas Bypass 4 4 4 3 3Low Outdoor Ambient Cooling Operation (30MPA Units) Standard 10 10 10 8 8 Optional Hot Gas Bypass 7 7 7 6 6

CAPACITY STEPSStep 1 100% 100% 100% 100% 100%Step 2 50% 50% 50% 67% 67%Step 3 18%* 25%* 34%* 33% 33%Step 4 — — — 21%* 22%*

MINIMUM FLOW RATES (gpm)Evaporator 22 28 43 55 64Condenser 22 28 43 55 64

MAXIMUM FLOW RATES (gpm)Evaporator 74 97 148 188 220Condenser 74 97 148 188 220

Physical data

7

30MPA AIR-COOLED AND 30MPW LIQUID-COOLED UNITS — SI

* With optional hot gas bypass. NOTES:1. Operating weight includes refrigerant operating charge and weight

of fluid in the heat exchangers.2. 30MPW units are shipped with full operating charge.

UNIT 30MPA,MPW 015 020 030 040 045NOMINAL kW 54 71 108 138 161OPERATING WT (kg)

MPA 284 288 327 414 424MPW 308 319 391 499 540

REFRIGERANT (kg) R-410AMPA — — — — —MPW 5.2 6.9 10.5 13.3 15.6

COMPRESSOR Scroll, HermeticQuantity 2 2 2 3 3Speed (r/s) 58 58 58 58 58Compressor Nominal kW 26 35 53 45 53Oil Charge (L) 5.0 6.5 6.5 9.8 9.8Capacity Control — Standard

No. of Steps 2 2 2 3 3Minimum Step Capacity (%) 50 50 50 33 33

Capacity Control — Optional Hot Gas BypassNo. of Steps 3 3 3 4 4Minimum Step Capacity (%) 18 25 34 21 22

EVAPORATORWeight (kg, empty) 12.5 18.3 41.6 55.5 58.2Net Fluid Volume (L) 2.9 4.6 8.9 12.0 13.0Maximum Refrigerant Pressure (kPa) 4482 4482 4482 4482 4482Maximum Fluid-Side Pressure (kPa) 2068 2068 2068 2068 2068Water Connections (in.)

Inlet and Outlet (Victualic) 2 2 21/2 2 1/2 21/2Drain (NPT) 1/2 1/2 1/2 1/2 1/2

CONDENSER (30MPW)Weight (kg, empty) 15.8 19.8 47.4 62.0 85.4Net Fluid Volume (L) 4.5 5.9 11.1 15.4 22.4Maximum Refrigerant Pressure (kPa) 4482 4482 4482 4482 4482Maximum Fluid-Side Pressure (kPa) 2068 2068 2068 2068 2068Water Connections (in.)

Inlet and Outlet (Victualic) 2 2 21/2 2 1/2 21/2CHASSIS DIMENSIONS (mm)

Length 1397 1397 1397 1397 1397Width 813 813 813 813 813Height 1600 1600 1600 1600 1600

MINIMUM SYSTEM FLUID VOLUME (L per kW)Normal Air Conditioning Standard 23 23 23 15 15 Optional Hot Gas Bypass 15 15 15 11 11Low Outdoor Ambient Cooling Operation (30MPA Units) Standard 38 38 38 30 30 Optional Hot Gas Bypass 25 25 25 23 23

CAPACITY STEPSStep 1 100% 100% 100% 100% 100%Step 2 50% 50% 50% 67% 67%Step 3 18%* 25%* 34%* 33% 33%Step 4 — — — 21%* 22%*

MINIMUM FLOW RATES (L/s)Evaporator 1.4 1.8 2.7 3.5 4.0Condenser 1.4 1.8 2.7 3.5 4.0

MAXIMUM FLOW RATES (L/s)Evaporator 4.7 6.1 9.3 11.9 13.9Condenser 4.7 6.1 9.3 11.9 13.9

8

*Factory-installed option.†Field-installed accessory.

Factory-installed optionsHot gas bypass — Hot gas bypass can be factory-in-stalled to allow additional capacity reduction for unit oper-ation below the minimum step of unloading. This option isnot available in combination with medium temperaturebrine.Condenserless — Applicable to the 30MPA model only.This option is available for use with remote condensers.Energy management module (EMM) — Energy man-agement module is used for 4 to 20 mA leaving fluid tem-perature reset, cooling set point reset, 4 to 20 mA demandlimit and two-step demand limit. Temperature reset lets theunit reset the leaving fluid temperature to a higher temper-ature during low load conditions. Temperature reset canalso be accomplished based on return fluid, outdoor air orspace temperature. (The EMM option is not required whenusing entering-water, outdoor-air, or space temperature fortemperature reset. These types of reset are available withthe main board. However, an accessory thermistor is re-quired for outdoor-air and/or space temperature reset.)Demand limiting allows the unit capacity to be limited dur-ing periods of peak energy usage. Demand limit requiresan external 4 to 20 mA signal or a 2-step remote pair ofdry contacts. Both the 4 to 20 mA and 2-step demand lim-it percentage values are adjustable. This is also available asa field-installed accessory.Non-fused disconnect — For wiring convenience, anelectrical power disconnect for line and control power maybe factory-installed.Sound enclosure panels — Units may be ordered withacoustically insulated sheet metal enclosures installedaround the unit to reduce radiated sound levels. Panels arealso available as a field installed accessory.Medium temperature brine — Unit may be factory-modified to permit brine operation from 15 to 32 F (–9.4to 0.0° C) leaving brine temperature. Refrigeration circuitcomponents, such as the expansion device and liquid linesolenoid, are modified to permit the low refrigerant flowrates typical of brine duty operation.

Mobility kit — Wheels are shipped with the unit for fieldinstallation to aid in transportation of unit to its final instal-lation site. Wheels are rubber type, pivot for easy unit ma-neuvering, and are lockable for safety. Mobility kit is alsoavailable as a separately shipped, field-installed accessoryfor all 30MP units.Height adjustment (leveling) kit — A leveling adjust-ment mechanism is shipped with the unit and must be field-located in each corner of the unit, to facilitate easy instal-lation and connection to existing piping. Leveling kit is alsoavailable as a field-installed accessory.

Field-installed accessoriesHot gas bypass — Hot gas bypass can be field-installedto allow additional capacity reduction for unit operation be-low the minimum step of unloading. This accessory cannotbe used in combination with medium temperature brine.Vibration isolators — Isolators are installed on the baseof the unit to reduce vibration transmission from the unitthrough the floor. This package consists of 4 resilient padsor 4 springs for each model.BACnet* translator control — Provides an interface be-tween the chiller and a BACnet Local Area Network (LAN,i.e.,MS/TP EIA-485).LON (local operating network) Translator Con-trol — Provides an interface between the unit and a localoperating network (i.e., LonWorks† FT-10A ANSI/EIA-709.1).Condenser water temperature sensors — This acces-sory allows measurement of condenser water entry andleaving temperatures.Sound enclosure panels — This accessory is an acousti-cally insulated sheet metal enclosure that is installed aroundthe unit and reduces radiated sound levels. Panels are alsoavailable as a factory-installed option for 30MP units.Energy management module (EMM) — Energy man-agement module is used for 4 to 20 mA leaving fluid tem-perature reset, cooling set point reset, 4 to 20 mA demandlimit and two-step demand limit. Temperature reset lets theunit reset the leaving fluid temperature to a higher temper-ature during low load conditions. Temperature reset canalso be accomplished based on return fluid, outdoor air orspace temperature. (The EMM accessory is not requiredwhen using entering-water, outdoor-air, or space tempera-ture for temperature reset. These types of reset are avail-able with the main board. However, an accessory thermis-tor is required for outdoor air and/or space temperaturereset.) Demand limiting allows the unit capacity to be limit-ed during periods of peak energy usage. Demand limit re-quires an external 4 to 20 mA signal or a 2-step remotepair of dry contacts. Both the 4 to 20 mA and 2-step de-mand limit percentage values are adjustable. This is alsoavailable as a factory-installed option.Mobility kit — Wheels may be field-installed on the unitto aid in transportation of unit to its final installation site.Wheels are rubber type, pivot for easy unit maneuvering,and are lockable for safety.Height adjustment (leveling) kit — Leveling adjust-ment mechanism located in each corner of the unit, to

ITEM OPTION* ACCESSORY†Hot Gas Bypass X XCondenserless XEMM X XVibration Isolators (Pads) XVibration Isolators (Springs) XBACnet Translator XLON Translator XNon-Fused Disconnect XSound Enclosure Panels X XMobility Kit (wheels) X XMedium Temperature Brine XCondenser Water Temperature Sensors X

Height Adjustment (Leveling) Kit X XCompressor Return Gas Sensor XY Strainer XNavigator™ Display Module XRemote Enhanced Display X

Options and accessories

9

facilitate easy installation and connection to existing pip-ing. Leveling kit is also available as a factory-installed op-tion on 30MP units.Navigator™ display module — The accessory providesa portable, hand held display module for convenient accessto unit status, operation, configuration and troubleshootingdiagnostics capability. The 4-line, 80-character LCD (liquidcrystal display) display provides clear language informa-tion in English, French, Spanish or Portuguese. Theweatherproof enclosure and industrial grade extensioncord make the Navigator module ideally suited for outdoorapplications. Magnets located on the back of the moduleallow attachment of any sheet metal component for handsfree operation.

Remote enhanced display — The accessory kit con-tains a remotely mounted 40-character per line, 16-linedisplay panel for unit diagnostics.Y strainer — A strainer with a minimum of 40 meshmust be installed within 10 ft (3 m) of the heat exchangerfluid inlet to prevent debris from clogging or damaging theheat exchanger. This strainer is required and is available asan accessory. The strainer is available in sizes from 1.5 to6 inches.Compressor return gas sensor — Sensor is availableas an accessory for field-installation to measure compres-sor return gas temperature.

*Sponsored by ASHRAE (American Society of Heating, Refrigerating and Air Conditioning Engineers).†Registered trademark of Echelon Corporation.

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Leveling unitTo ensure proper oil return, be sure that unit is level,particularly in its major lengthwise dimension, as com-pressor oil return piping runs in that direction.

It should be determined prior to installation if anyspecial treatment is required to ensure a levelinstallation.

Evaporator fluid temperature1. Maximum sustained leaving chilled-fluid temperature

(LCWT) is 60 F (16 C). For sustained operation,entering-fluid temperature should not exceed 75 F(24 C). Unit can start and pull down with up to 95 F(35 C) entering-fluid temperature due to the pressurelimiting feature of the expansion valve.

2. Minimum LCWT for standard units is 32 F (0° C).For temperatures above 32 F (0° C) and below 40 F(4 C), ensure the chilled water loop has a suitablebrine solution. Lower LCWT can be used on mediumtemperature brine applications. Refer to MediumTemperature Brine Applications section below. Forapplications with ratings below 40 F (4 C) on stan-dard units, contact your local Carrier representative.

Medium temperature brine applications (15 to 32 F [–9.4 to 0.0° C])In all brine duty applications, a suitable brine (or antifreezeand water solution) must be provided to ensure freeze pro-tection. The solution crystallization point of the brineshould be below the suction temperature of the evaporator,and at least 15° F (8.3° C) below the leaving brine temper-ature. The brine solution must also be properly inhibited toprovide suitable corrosion protection.

Condenser (30MPW units) water temperature1. Maximum leaving condenser-water temperature is

140 F (60.0 C). This temperature is not available forbrine units.

2. Minimum entering condenser-water temperaturewithout condenser flow regulation is 65 F (18.3 C).

Evaporator and liquid-cooled condenser flow rangeRatings and performance data in this publication are for acooling temperature rise of 10° F (5.6° C) and are suitablefor a range from 5 to 15° F (2.8 to 8.3° C) temperaturerise without adjustment. Units may be operated at a differ-ent temperature range, provided flow limits are not ex-ceeded and corrections to capacity, etc. are made. Forminimum flow rates, see Minimum Evaporator and Con-denser Flow Rates and Minimum Loop Volume tables.High flow rate is limited by pressure drop that can betolerated.Minimum evaporator flow — The minimum evapoatorflow (maximum evaporator temperature rise) for standardunits is shown in Minimum Evaporator and CondenserFlow Rates and Minimum Loop Volume table below. When

gpm (L/s) required is lower (or rise is higher), follow recom-mendations below:

a. Multiple smaller chillers may be applied in series,each providing a portion of the design temperaturerise.

b. Chilled fluid may be recirculated to raise flow rate.However, the mixed temperature entering the evapo-rator must be maintained at a minimum of at least 5°F (2.8° C) above the leaving chilled fluid temperature.

NOTE: Recirculation flow is shown below.

Maximum evaporator flow (5 gpm/ton or < 5° Frise[0.09 L/s • kW or < 2.7° C rise]) — The maxi-mum evaporator flow results in practical maximum pres-sure drop through evaporator.

The return fluid may bypass the evaporator to keeppressure drop through the evaporator within acceptablelimits. This permits a higher T with lower fluid flowthrough evaporator and mixing after evaporator.NOTE: Bypass flow is shown on page 13.

MINIMUM EVAPORATOR AND CONDENSERFLOW RATES

MINIMUM LOOP VOLUME

LEGEND

NOTES:Gallons = V x ARHI capacity in tons.Liters = N x ARHI capacity in kW.

UNIT SIZEEVAPORATOR CONDENSER

Gal./Min L/s Gal./Min L/s30MP015 22 1.4 22 1.430MP020 28 1.8 28 1.830MP030 43 2.7 43 2.730MP040 55 3.5 55 3.530MP045 64 4.0 64 4.0

UNIT SIZEMINIMUM EVAPORATOR

LOOP VOLUMEGal. L

30MP015 92.4 349.730MP020 121.8 460.930MP030 184.8 699.330MP040 156.8 593.430MP045 183.2 693.3

ARHI — Air Conditioning, Heating, and Refrigeration InstituteN — Liters per kWV — Gallons per ton

APPLICATION V NNormal Air Conditioning 3 3.25Process Type Cooling 6 to 10 6.5 to 10.8Low Ambient Operation 6 to 10 6.5 to 10.8

RECIRCULATION FLOW

Application data

13

Variable evaporator flow rates — These variable ratesmay be applied to standard chillers. However, the unit willattempt to maintain a constant leaving chilled-fluid temper-ature. In such cases, minimum fluid loop volume must be inexcess of 3 gallons per ton (3.2 L per kW), and flow ratemust change in steps of less than 10% per minute. Apply 6gal. per ton (6.5 L per kW) fluid loop volume minimum ifflow rate changes more rapidly.Minimum liquid-cooled condenser flow — This value(maximum rise) is shown in Minimum Evaporator and Con-denser Flow Rates and Minimum Loop Volume tables onpage 12. Condensers may be piped in series. Ensure leav-ing-water temperature does not exceed 140 F (60.0 C).Chilled fluid loop volume — The chilled fluid loop vol-ume in circulation must equal or exceed 3 gal. per ton ofcooling (3.25 L per kW) for temperature stability and accu-racy in normal air conditioning applications. (For example,a 30MPW040 would require 120 gal. [454 L] in circulationin system loop — see Minimum Evaporator and CondenserFlow Rates and Minimum Loop Volume tables on page 12.)For process jobs where accuracy is vital or for operation atoutdoor ambient temperatures below 32 F (0° C) with lowunit loading conditions, there should be from 6 to 10 gal.per ton (6.5 to 10.8 L per kW). To achieve this volume, it isoften necessary to install a tank in the loop. Tank should bebaffled to ensure there is no stratification, and that water (orbrine) entering tank is adequately mixed with liquid in thetank.NOTE: Tank installation is shown below.

Fouling factor — The factor used to calculate tabulatedratings was 0.00010 ft2 • hr • F/Btuh (.000018 m2 •k/W). As fouling factor is increased, unit capacity decreas-es and compressor power increases. To determine

selections at other fouling factors, use chiller program inthe electronic catalog.

30MPA remote condenser requirements1. Ensure each refrigerant circuit has its own head pres-

sure control.2. Condenser must provide 15° F (8.3° C) subcooling, a

maximum of 40° F (22.2° C) difference between satu-rated condensing temperature and outdoor ambienttemperature (to prevent overload at high ambienttemperatures), and a minimum of 20° F (11.1° C) dif-ference (to ensure subcooling).

3. Do not manifold independent refrigerant circuits intoa single condenser.

4. Condenser should not be located more than 15 ft(4.57 m) below chiller to maintain subcooling.

5. Design discharge and liquid piping according toCarrier System Design Manual.

Oversizing chillersOversizing chillers by more than 15% at design conditionsmust be avoided as the system operating efficiency will beadversely affected (resulting in greater and/or excessiveelectrical demand and cycling of compressors). When fu-ture expansion of equipment is anticipated, install a singlechiller to meet present load requirements and install a sec-ond chiller to meet the additional load demand.

It is also recommended that the installation of 2 smallerchillers be considered where operation at minimum load iscritical. The operation of a smaller chiller loaded to a great-er percent of minimum is preferred to operating a singlechiller at or near its minimum recommended value.

Hot gas bypass should not be used as a means to allowoversizing chillers. Hot gas bypass should be given consid-eration where substantial operating time is anticipated be-low the minimum unloading step.

StrainersA 40 mesh strainer must be installed in the evaporator andcondenser fluid inlet lines, within 10 ft of the heat exchang-er in each line, between the pump and the chiller.

Parallel chillersWhere chiller capacities greater than can be supplied by asingle 30MP chiller are required, or where stand-by capa-bility is desired, chillers may be installed in parallel. Unitsmay be of the same or different sizes. However, evaporatorand condenser flow rates must be balanced to ensure prop-er flow to each chiller.

Series chillersWhere a large temperature drop (greater than 25 F[13.9 C]) is desired and higher fluid pressure drop acrossthe evaporator can be tolerated, chillers may be installed inseries. The leaving fluid temperature sensors need not berelocated. However, the evaporator minimum entering flu-id temperature limitations should be considered for thechillers located downstream of other chillers. Condensersshould be piped in parallel to maximize capacity and effi-ciency. This should also minimize condenser pressure dropand saturated condensing temperatures. However, if

BYPASS FLOW

CHILLER EVAPORATOR

TANK INSTALLATION

14

condensers are piped in series, ensure that the leaving wa-ter temperature does not exceed 140 F (60.0 C).

Energy managementDemand limiting and load shedding are popular techniquesused to reduce peak electric demands typically experiencedduring hot summer days when air conditioning loads arehighest. When utility electricity demands exceed a certainlevel, electrical loads are turned off to keep the peak de-mands below a prescribed maximum limit. Unit unloadingwill reduce electrical demand while allowing the chiller tooperate under part-load capacity and maintain partialchilled fluid cooling. The energy management module canbe added to accomplish this.

Electrical demand may be limited by unloading the chillerto a predetermined percentage of the load. One stage ofunloading can be initiated by a remote signal to significant-ly reduce the chiller power consumption. This power re-duction applies to the full load power at nominal condi-tions. The demand limit control should not be cycled lessthan 10 minutes on and 5 minutes off.

Vibration isolationAll compressors are isolated. External vibration isolation isnot generally required, but is available for 30MP units as anaccessory if desired.

Evaporator and liquid-cooled condenser freeze protectionIf chiller or fluid lines are in an area where ambient condi-tions fall below 40 F (4.4 C), it is recommended that anantifreeze (brine) solution be added to protect the unit andfluid piping to a temperature 15° F (8.3° C) below the low-est anticipated ambient temperature. In applications wherethe leaving evaporator fluid temperature is below 32 F(0° C), the medium temperature brine option should be se-lected so that the freeze point is at least 15° F (8.3° C) be-low the evaporator leaving fluid temperature and below thesuction temperature at the evaporator.

Use only antifreeze solutions approved for heat ex-changer duty. Use of automotive antifreezes is not recom-mended because of the fouling that can occur once theirrelatively short-lived inhibitor breaks down.

If not protected with an antifreeze solution, drainingevaporator and outdoor piping is recommended if systemis not to be used during freezing weather conditions.

Application data (cont)

15

Carrier’s packaged selection program provides quick,easy selection of Carrier’s liquid-cooled chillers. The pro-gram considers specific temperature, fluid and flowrequirements among other factors such as fouling and alti-tude corrections.

Before selecting a chiller, consider the following points:Leaving water (fluid) temperature (LWT):• The LWT must be at least 40 F (4.4 C) or greater for

fresh water applications.• If the LWT is greater than 32 F (0° C) and less than

40 F (4.4 C), select the standard unit and ensure a suit-able brine solution in the water loop.

• If the LWT is below 32 F (0° C), select the medium tem-perature brine option.

• If the LWT requirement is greater than 60 F (15.5 C), amixing loop is required.

Entering water (fluid) temperature (EWT):• If the EWT requirement is greater than 70 F (21.1 C), a

mixing loop is required. The EWT should not exceed70 F (21.1 C) for extended operation. Pulldown can beaccomplished from 95 F (35 C).

Evaporator flow rate or evaporator delta-T:• The evaporator delta-T (EWT – LWT) must fall between

5 and 20° F (2.8 and 11.1° C) while still meeting themaximum entering requirements.

• For larger or smaller delta-T applications, a mixing loopis required. If the evaporator flow is variable, the rate ofchange of flow should not exceed 10% per minute.The loop volume in circulation must equal or exceed3 gallons per nominal ton (3.2 L per kW) of cooling fortemperature stability and accuracy in normal air condi-tioning applications. In process cooling applications,there should be 6 to 10 gallons per ton (6.5 to 10.8 Lper kW). To achieve this loop volume, it is often neces-sary to install a tank in the loop. The tank should be baf-fled to ensure there is no stratification, and that water(or brine) entering the tank is adequately mixed with liq-uid in the tank. See Water Loop Volume in the Applica-tion Data section.

Water quality, fouling factor:• Poor water quality can increase the required evaporator

fouling factor.• Higher than standard fouling factors lead to lower

capacity and higher input kW from a given chiller sizecompared to running the same application with betterwater quality (and lower fouling factors).

Selection procedure

16

1203

100

1

80

e D

rop

(kPa

)

40

60

Wat

er P

ress

ure

20

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13

Liters/second

1 2 3 4 5

EVAPORATOR AND CONDENSER PRESSURE DROP CURVES

EVAPORATOR PRESSURE DROP CURVE — ENGLISH

EVAPORATOR PRESSURE DROP CURVE — SI

0

5

10

15

20

25

30

35

40

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200

Wat

er P

ress

ure

Dro

p (�

)

GPM

1 5432

LEGEND1 — 30MP0152 — 30MP0203 — 30MP0304 — 30MP0405 — 30MP045

Performance data

17

1201

100

80

e D

rop

(kPa

)

40

60

Wat

er P

ress

ure

20

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Liters/second

1 2 3 54

EVAPORATOR AND CONDENSER PRESSURE DROP CURVES

CONDENSER PRESSURE DROP CURVE — ENGLISH

CONDENSER PRESSURE DROP CURVE — SI

40

30

35

1 5432

25

30

Dro

p (�

)

15

20

Wat

er P

ress

ure

5

10

0

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240

GPM

LEGEND1 — 30MP0152 — 30MP0203 — 30MP0304 — 30MP0405 — 30MP045

18

LEGEND

*Supply Range — Units are suitable for use on electrical systemswhere voltage supplied to the unit terminals is not below or above thelisted range limits.

NOTES:1. All units have one field power terminal block.2. Maximum incoming wire size is as follows:

For units with terminal block: 350 kcmil for unit sizes 030-045; 208/230-3-60 voltages. 2/0 for all other unit sizes; all voltages.For units with optional non-fused disconnect: 350 kcmil for unit sizes: 030-045; 208/230-3-60 voltages. 045; 380-3-60 voltage.

3/0 for unit sizes: 015,020; 208/230-3-60 voltages. 020-040; 380-3-60 voltage. 030-045; 460-3-60 and 575-3-60 voltages. 2 AWG for unit sizes: 015; 380-3-60 voltage. 015-020; 460-3-60 and 575-3-60 voltages.

3. Additional control circuit power is not required. 4. Any field modification of factory wiring must be in compliance with

all applicable codes. Field-installed power wires must be rated75 C minimum.

5. Use copper conductors only. 6. Control circuit power supply is 24-v single phase. Control power is

supplied by the factory-installed control transformer.

UNIT SIZE30MPA,MPW

VOLTSNAMEPLATE(3 ph, 60 Hz)

VOLTAGE* COMPRESSOR UNIT

Quantity LRA(ea.) MCA ICF MOCP Rec

FuseMin Max

015208/230 187 253

2195 66.4 224.5 90 80

380 342 418 123 37.6 139.7 50 45460 414 508 95 33.1 109.7 45 40575 518 632 80 27.5 92.2 35 35

020208/230 187 253

2239 80.6 274.8 110 90

380 342 418 145 53.4 168.7 70 60460 414 508 125 40.3 142.9 50 45575 518 632 80 32.2 94.3 45 40

030208/230 187 253

2340 125.6 395.8 175 150

380 342 418 196 76.5 230.0 110 90460 414 508 179 60.5 205.9 80 70575 518 632 132 53.3 155.7 70 60

040208/230 187 253

3300 166.7 402.6 200 200

380 342 418 139 87.4 192.8 110 100460 414 508 150 75.1 196.2 90 90575 518 632 109 64.7 148.8 80 70

045208/230 187 253

3340 181.4 451.6 225 200

380 342 418 196 110.5 264.0 125 125460 414 508 179 87.4 232.8 110 100575 518 632 132 77.0 179.4 100 90

ICF — Maximum instantaneous current flow during starting.kcmil — Thousand circular milsLRA — Locked rotor amps.MCA — Minimum circuit amps (for wire sizing). Complies with

NEC, Section 430-24.MOCP — Maximum Overcurrent ProtectionNEC — National Electrical Code (U.S.A.)Rec Fuse

— Recommended dual element fuse amps (150% of com-pressor RLA). Size up to the next standard fuse size.

Electrical data

19

The controls consist of 24-v control circuits. The 24-v cir-cuit provides control power for the ComfortLink™ micro-processor control, all safeties, and the interlock relays.

MicroprocessorThe ComfortLink microprocessor controls overall unitoperation. Its central executive routine controls a numberof processes simultaneously. These include internal timers,reading inputs, analog to digital conversions, display con-trol, diagnostic control, output relay control, demand limit,capacity control, and temperature reset. Some processesare updated almost continuously, others every 2 to 3 sec-onds, and some every 30 seconds.

The microprocessor routine is started by switching theEmergency ON-OFF switch (switch 2) to ON position.

Scrolling marquee displayStandard control includes a four-digit alphanumeric displaythat shows all of the ComfortLink control codes (withexpandable clear language), plus set points, time of day,and temperatures.

Off cycleOn 30MPA units, during an off cycle, the crankcase heat-ers remain energized. The crankcase heaters are energizedany time all of the compressors in the circuit are off.

Start-upWhen the unit Enable/Off/Remote switch is set to theENABLE position, the 24-v control circuit will be ener-gized. When there is a call for cooling and all safety devicesare satisfied, the compressor will be started after a delay of2 to 5 seconds. The low pressure and oil pressure safetyswitches (if so equipped) will be bypassed, and the com-pressor unloaders will remain energized during a 2-minutetime delay after the compressor has been started.

Capacity controlThe 30MP015-030 units have 2 standard stages of capac-ity control and the 30MP040 and 045 units have 3 stan-dard stages of capacity control. The standard capacitystaging is provided by compressor staging. One additionalstage of capacity control can be provided by the optionalhot gas bypass.

When the leaving fluid temperature rises above the setpoint, the control will begin to add stages of capacity bystarting a compressor. The control uses a leaving-watertemperature control with entering water compensationroutine and will add additional stages of capacity as

required to meet the required load. If the unit is equippedwith hot gas bypass, the hot gas bypass solenoid and acompressor for the circuit will be energized as the firststage of capacity. When the leaving-fluid temperaturestarts falling below the set point, the control will removestages of capacity to match the decrease in building load.

Dual chiller controlThe ComfortLink controller allows 2 chillers (piped in par-allel) to operate as a single chilled water plant with standardcontrol functions coordinated through the master chillercontroller. This standard ComfortLink feature requires acommunication link between the 2 chillers and an addi-tional thermistor and well in the common supply line.

Safeties Loss of charge — This safety will lock out the compres-sor if the refrigerant pressure falls below the minimum per-mittable level. See base unit controls and troubleshootingliterature for loss of charge logic.High-pressure cutout — This protection will lock outthe compressor if the compressor discharge pressure risesabove the cutout setting. See base unit controls and trou-bleshooting literature for pressure settings. Compressor circuit breakers — Provided for short cir-cuit protection.Sensor failure protection — Failures are detected for allthermistors by the microprocessor.Loss-of-flow protection — Loss-of-flow protection isprovided by monitoring the standard proof-of-flow switch.Compressor anti-cycling — This feature limits com-pressor cycling.

Freeze protectionThis safety feature is provided by monitoring of the leavingfluid temperature. If the leaving chilled-fluid temperaturefalls below the unit freeze point, then the unit will shut offimmediately.

DiagnosticsMicroprocessor may be put through service test (see Con-trols, Start-Up, Operation, Service and Troubleshooting lit-erature) without additional equipment or tools. Service testconfirms microprocessor is functional, informs observerthrough display the condition of each sensor and switch inchiller, and allows observer to check for proper operationof control and compressor(s).

SensorsThe standard unit is provided with entering fluid, leavingfluid, suction pressure, and discharge pressure transducers.Additional sensors can be added for condenser enteringwater temperature, leaving water temperature, space tem-perature, outdoor air temperature, or suction gas tempera-ture to provide additional diagnostics and control features.

Default settingsTo facilitate quick start-ups, all chillers with ComfortLink™controls are pre-configured with a default setting thatassumes stand-alone operation supplying 44 F (6.7 C)chilled water.

Run Status

Service Test

Temperature

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

Alarm Status

ENTER

MODE

ESCAPE

Controls

20

Controls (cont)Configuration setting will be based on any options or

accessories included with the unit at the time of manufac-turing. Date and time are set to U.S.A. eastern time zoneand will need reconfiguring based on location and localtime zone. If operation based on occupancy scheduling isdesired, this will also need to be set during installation.

Remote alarmA 24-v alarm signal will be provided to a remote location inthe event of a lockout condition.

Demand limit switchDemand limiting can be accomplished through switchinput or by a field-supplied 4 to 20 mA signal. For eithercase, the Energy Management Module option (also avail-able as an accessory) is required. The field-supplied, nor-mally open contacts (single or pair) can be used to reducethe total chiller electrical demand during times of peakusage. This is accomplished by reducing the number ofcapacity stages. In a similar manner, a field-supplied 4 to20 mA signal can also be used to reduce the total capacityof the chillers.

Factory-installed optional controlsHot gas bypass — The hot gas bypass will provide anadditional stage of capacity control below the minimumstandard step of capacity.

Capacity control stepsRefer to the Capacity Control Steps tables below forcapacity control steps for standard units.NOTE: If the optional factory-installed hot gas bypass isused, there will be one more stage of unloading added andthe units will be able to operate with an additional step ofcapacity.

CAPACITY CONTROL STEPS

* Optional hot gas bypass.

UNIT30MP

CONTROLSTEPS

PERCENTDISPLACEMENT

0151 1002 503* 18

0201 1002 503* 25

0301 1002 503* 34

040

1 1002 673 334* 21

045

1 1002 673 334* 22

21

Typical piping and wiring

NO

TE

S:

1.C

hille

r m

ust b

e in

stal

led

leve

lly to

mai

ntai

n pr

oper

com

pres

sor

oil r

etur

n.2.

Wiri

ng a

nd p

ipin

g sh

own

are

gene

ral p

oint

s-of

-con

nect

ion

guid

es o

nly

and

are

not

inte

nded

for

a sp

e-ci

fic in

stal

latio

n. W

iring

and

pip

ing

show

n ar

e fo

r a

quic

k ov

ervi

ew o

f sys

tem

and

are

not

in a

ccor

danc

ew

ith r

ecog

nize

d st

anda

rds.

3.

All

wiri

ng m

ust c

ompl

y w

ith a

pplic

able

loca

l and

nat

iona

l cod

es.

4.A

ll pi

ping

mus

t fo

llow

sta

ndar

d pi

ping

tec

hniq

ues.

Ref

er to

Car

rier

Sys

tem

Des

ign

Man

ual o

r ap

prop

ri-at

e A

SH

RA

E (

Am

eric

an S

ocie

ty o

f H

eatin

g, R

efrig

erat

ing,

and

Air

Con

ditio

ning

Eng

inee

rs)

hand

book

for

deta

ils.

5.S

ee A

pplic

atio

n D

ata

sect

ion

on p

age

12 f

or m

inim

um s

yste

m f

luid

vol

ume.

Thi

s sy

stem

may

req

uire

the

addi

tion

of a

hol

ding

tank

to e

nsur

e ad

equa

te v

olum

e.

LIQ

UID

-CO

OLE

D 3

0M

PW

SH

OW

N

22

09DP

FIELDPOWERSUPPLY

CONTROLWIRING

CONTROLWIRING

NOTES:1. Chiller must be installed levelly to maintain proper compressor oil

return.2. Wiring and piping shown are general points-of-connection guides

only and are not intended for a specific installation. Wiring andpiping shown are for a quick overview of system and are not inaccordance with recognized standards.

3. All wiring must comply with applicable local and national codes.4. All piping must follow standard piping techniques. Refer to Carrier

System Design Manual part 3, Carrier E20-II® software Refriger-ant Piping program, or appropriate ASHRAE (American Societyof Heating, Refrigeration, and Air Conditioning Engineers) hand-book for details on proper piping sizes and design.

5. See Application Data section on page 12 for minimum systemfluid volume. This system may require the addition of a holdingtank to ensure adequate volume.

6. Hot gas lines should rise above refrigerant level in condenser cir-cuit. Double riser may be required; check unit minimum capacity.

7. Trap should be installed on hot gas lines to prevent condenser oiland refrigerant vapor migration from accumulating in the com-pressor during off cycle.

8. Pitch all horizontal lines downward in the direction of refrigerantflow.

9. For piping lengths greater than 50 ft, provide support to liquid andgas lines near the connections to the condenser coil.

10. For pressure relief requirements, see latest revision of ASHRAEStandard 15, Safety Code for Mechanical Refrigeration.

30MPA UNIT WITH 09DP REMOTE AIR-COOLED CONDENSER SHOWN

Typical piping and wiring (cont)

23

LE

GE

ND

AL

MR

—

Ala

rm R

elay

(24

V)

5 V

A M

axA

WG

—

Am

eric

an W

ire G

age

CF

R—

C

onde

nser

Fan

Rel

ayC

NF

S—

Con

dens

er F

low

Sw

itch

CN

P—

C

onde

nser

Pum

pC

NP

I—

C

onde

nser

Pum

p In

terlo

ckC

WP

—

Chi

lled

Wat

er P

ump

CW

PI

—

Chi

lled

Wat

er P

ump

Inte

rlock

CW

V—

C

onde

nser

Wat

er V

alve

EM

M—

E

nerg

y M

anag

emen

t Mod

ule

LVT

—

Low

Vol

tage

Ter

min

al S

trip

NE

C—

Nat

iona

l Ele

ctric

al C

ode

OA

T—

O

utsi

de A

ir Te

mpe

ratu

reS

PT

—

Spa

ce T

empe

ratu

re

NO

TE

S:

1.Fa

ctor

y w

irin

g is

in a

ccor

danc

e w

ith U

L 19

95 s

tand

ards

. Fie

ld m

odifi

catio

ns o

r ad

ditio

ns m

ust b

e in

com

plia

nce

with

all

appl

icab

le c

odes

.2.

All

units

or

mod

ules

hav

e si

ngle

poi

nt p

rim

ary

pow

er c

onne

ctio

n. M

ain

pow

er m

ust

be s

uppl

ied

from

a fi

eld

or fa

ctor

y su

pplie

d di

scon

nect

.3.

Wiri

ng fo

r m

ain

field

sup

ply

mus

t be

rate

d 75

C. U

se c

oppe

r co

nduc

tors

onl

y.a.

Inco

min

g w

ire s

ize

rang

e fo

r te

rmin

al b

lock

with

MC

A u

p to

120

am

ps i

s 14

AW

G (

Am

eric

anW

ire G

age)

to 2

/0.

b.In

com

ing

wire

siz

e ra

nge

for

term

inal

blo

ck w

ith M

CA

fro

m 1

20.1

am

ps t

o 31

0 am

ps is

6 A

WG

to 3

50 k

cmil.

c.In

com

ing

wire

siz

e ra

nge

for

non-

fuse

d di

scon

nect

with

MC

A u

p to

50

amps

is

10 a

wg

to 2

AW

G.

d.In

com

ing

wire

siz

e ra

nge

for

non-

fuse

d di

scon

nect

with

MC

A f

rom

50.

1 am

ps t

o 90

am

ps

is 6

AW

G to

3/0

.e.

Inco

min

g w

ire s

ize

rang

e fo

r no

n-fu

sed

disc

onne

ct w

ith M

CA

from

90.

1 am

ps to

250

am

ps i

s 4

AW

G to

350

kcm

il.4.

Ref

er t

o ce

rtifi

ed d

imen

sion

al d

raw

ings

for

exa

ct l

ocat

ions

of

the

mai

n po

wer

and

con

trol

pow

eren

tran

ce lo

catio

ns.

5.Te

rmin

al 2

4 of

the

LVT

is fo

r co

ntro

lof c

hille

d w

ater

pum

p (C

WP

) st

arte

r. Te

rmin

al 2

0 of

the

LVT

isfo

r co

ntro

l of

con

dens

er p

ump

(CN

P)

star

ter

or c

onde

nser

fan

rel

ay (

CF

R).

The

max

imum

loa

dal

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Typical control wiring schematic

24

Scroll Liquid ChillersHVAC Guide SpecificationsSize Range: 15 to 45 Tons (53 to 158 kW)Carrier Model Numbers:

30MPA,MPWPart 1 — General1.01 SYSTEM DESCRIPTION

Microprocessor controlled liquid-cooled condenser(30MPW) or condenserless (30MPA) liquid chillerutilizing scroll type compressors.

1.02 QUALITY ASSURANCEA. 60-Hz unit performance shall be rated per ARHI

Standard 550/590, latest edition (U.S.A.) at stan-dard rating conditions. All other unit performanceshall be based on ARHI Standard 550/590, latestedition.

B. All units shall be ASHRAE 90.1 compliant.C. Unit construction shall comply with ANSI/ASHRAE

15 Safety Standard (latest revision) and NEC.D. Unit shall be certified in accordance with ISO

9001:2000 manufacturing quality standard. E. Unit shall be ETL and ETL, Canada certified.

1.03 DELIVERY, STORAGE AND HANDLINGA. Unit shall be shipped factory-assembled with all pip-

ing and wiring, precharged with a complete operat-ing charge of R-410A (30MPW) or a holding chargeof nitrogen (30MPA) and shall be stored and han-dled according to manufacturer’s recommendations.

B. Unit controls shall be capable of withstanding 150 F(66 C) storage temperatures in the control compart-ment.

C. Chiller and starter should be stored indoors, pro-tected from construction dirt and moisture. Aninspection should be conducted under shippingtarps, bags, or crates to be sure water has not col-lected during transit. Protective shipping coversshould be kept in place until machine is ready forinstallation. The inside of the protective covershould meet the following criteria:

1. Temperature is between 40 F (4.4 C) and120 F (48.9 C).

2. Relative humidity is between 10% and 80%(non-condensing).

Part 2 — Products2.01 EQUIPMENT

A. General:Single-piece liquid chiller consisting of compres-sor(s), BPHE evaporator, condenser (30MPW only),controls, safeties, and any hardware required beforestart-up.

B. Unit Cabinet:1. Frame shall be of heavy-gage galvanized steel

with an electrostatically applied baked enamelfinish.

2. The unit shall pass through a standard 36-in.(914 mm) door and shall not exceed 57 in.(1448 mm) in length.

C. Compressor:1. Fully hermetic scroll type compressors.2. Direct drive, 3500 rpm, protected by line break

device, suction gas cooled motor.3. External vibration isolation - rubber in shear.

D. Evaporator:1. Evaporator shall be rated for a refrigerant work-

ingside pressure of 450 psig (3103 kPa) andshall be tested for a maximum water-side pres-sure of 300 psig (2068 kPa).

2. Shall be single-pass, ANSI type 316 stainlesssteel, brazed plate construction.

3. Shall be insulated with 3/4-in. (19 mm) closed-cell, polyvinyl-chloride foam with a maximum Kfactor of 0.28.

4. Unit shall be provided with a factory-installedflow switch.

5. Unit shall be provided with entering and leavingchilled water temperature sensors and waterpressure access port.

6. A strainer with a minimum of 40 mesh must beinstalled within 10 ft (3 m) of the heatexchanger fluid inlet to prevent debris fromclogging the heat exchanger. This strainer shallbe required and shall be available as anaccessory.

E. Brazed-Plate Condenser:1. Condenser shall be rated for a refrigerant work-

ingside pressure of 450 psig (3103 kPa) andshall be tested for a maximum water-side pres-sure of 300 psig (2068 kPa).

2. Single-pass, liquid-cooled, ANSI type 316,stainless-steel brazed-plate construction thatshall provide positive subcooling of liquid refrig-erant.

3. Unit shall be equipped with victaulic waterconnections.

4. A strainer with a minimum of 40 mesh must beinstalled within 10 ft (3 m) of the heatexchanger fluid inlet to prevent debris fromclogging the heat exchanger. This strainer shallbe required and shall be available as an acces-sory.

F. Refrigerant Components:1. Each chiller shall contain the following: sight

glass; filter drier; liquid line solenoid valve(30MPA); liquid line isolation valve (30MPA);thermostatic expansion valve; and chargingport.

2. Thermostatic expansion valve (TXV) shall belocated within 12-in. of the evaporator with nobend between TXV and evaporator in

Guide specifications

25

accordance with evaporator manufacturer rec-ommendation.

G. Controls, Safeties and Diagnostics:1. Controls:

a. Unit controls shall include the following min-imum components:

1) Microprocessor.2) Power and control circuit terminal

blocks.3) ON/OFF control switch.4) Thermistor is installed to measure evap-

orator entering and leaving fluidtemperatures.

5) Terminal block for temporary and/orpermanent interface to the CarrierComfort Network® or similar buildingsystem control.

b. Microprocessor with non-volatile memory.Battery backup system shall not be accepted.

c. Control transformer to serve all controllers,contactors, relays, and control components.

d. Replaceable solid-state relay panels andcontrollers.

e. Pressure transducers (used to calculate satu-rated suction temperature and saturated con-densing temperature).

f. Provision for field installation of accessorysensor to measure compressor return gastemperature (suction gas thermistor).

g. Terminals shall be provided in the controlbox for wiring of accessory field-installedcondenser temperature sensors.

h. Unit controls shall be capable of performingthe following functions:

1) Capacity control based on leavingchilled fluid temperature and compen-sated by rate of change of return-fluidtemperature.

2) Limiting of the chilled fluid temperaturepulldown rate at start-up to 1° F(0.56° C) per minute to prevent exces-sive demand spikes (charges) at start-up.

3) Seven-day time schedule.4) Leaving chilled fluid temperature reset

from return fluid.5) Dual chiller control for parallel chiller

applications (common leaving chilledwater sensor required)

6) Timed maintenance scheduling to sig-nal maintenance activities.

2. Diagnostics:a. The control panel shall include, as standard,

a scrolling marquee display capable of indi-cating the safety lockout condition by dis-playing a code for which an explanation maybe scrolled at the display.

b. Information included for display shall be:1) Compressor lockout.2) Loss of charge.3) Low fluid flow.4) Evaporator freeze protection.5) Thermistor malfunction.6) Entering and leaving-fluid temperature.7) Circuit suction and discharge pressure.8) Time of day.

c. Display module, in conjunction with themicroprocessor, must also be capable of dis-playing the output (results) of a service test.Service test shall verify operation of everyswitch, thermistor, and compressors beforechiller is started.

d. Diagnostics shall include the ability to reviewa list of the 20 most recent alarms with clearlanguage descriptions of the alarm event.Display of alarm codes without the ability forclear language descriptions shall beprohibited.

e. An alarm history buffer shall allow the userto store no less than 20 alarm events withclear language descriptions, time and datestamp event entry.

f. The chiller controller shall include a connec-tion port for communicating with the localequipment network and the Carrier ComfortNetwork (CCN) system.

g. The control system shall allow softwareupgrade without the need for new hardwaremodules.

3. Safeties:a. Unit shall be equipped with sensors and all

necessary components in conjunction withthe control system to provide the unit withthe following protections:

1) Loss of refrigerant charge protection.2) Low fluid flow detection.3) Low chilled fluid temperature protec-

tion.4) Low control voltage (to unit) protection.5) High-pressure switch.6) Reverse rotation.7) Overcurrent protection.8) Loss of phase.

b. Compressors shall be equipped with the fol-lowing protections:

1) High discharge temperature protection.2) Electrical overload through the use of

definite-purpose contactors and motoroverload protection through internalcompressor overload or external currentoverload.

3) Circuit breakers shall open all 3 phasesin the event of an overload in any onephase (single-phasing condition).

26

4) Circuit breakers for short circuit protec-tion.

H. Operating Characteristics:1. Unit shall be capable of starting with up to 95 F

(35 C) fluid temperature entering theevaporator.

2. Unit shall be capable of operating with variableevaporator fluid flow, up to 10% change in flowrate per minute.

I. Electrical Requirements:1. Single-point electrical power connection with

compressors factory-wired to a terminal blockin the control panel. Compressor sensors andsystem pressure transducers shall be factory-wired to the unit controller.

2. Control interface shall be accessed through lowvoltage terminal strip or terminal strip.

J. Chilled Water Circuit:1. Chilled water circuit shall be rated for 300 psig

(2068 kPa).2. Solid-state flow switch with integral relay shall

be factory installed and wired.K. Special Features:

Certain standard features are not applicable whenthe features designated by * are specified. For assis-tance in amending the specifications, contact yourCarrier representative.

1. Hot Gas Bypass:This factory-installed option shall permit chillerto provide an additional step of capacity reduc-tion over standard.

2. Sound Enclosure Panels:This acoustic package shall be either factory-installed or field-installed and shall entirelyenclose the compressor section to furtherreduce radiated sound.

3. Mobility Kit (Wheels):This package shall be factory-supplied for fieldinstallation and shall include 4 swivel wheels foreasy unit mobility.

4. Height Adjustment Kit:The units shall be shipped with a high adjust-ment mechanism located in each corner of theunit to aid in leveling the chiller and to facilitateconnections to existing piping.

5. Vibration Isolators (Resilient Pads):Vibration isolators shall be field-installed beforethe unit is set into its final location and shallreduce vibration transmission through themounting area of the chiller.

6. Vibration Isolators (Springs):Vibration isolators shall be field-installed beforethe unit is set into its final location and shallreduce vibration transmission through themounting area of the chiller.

7. Non-Fused Disconnect:The non-fused disconnect shall be factoryinstalled and shall disconnect all power to theunit (including control circuit power).

8. Brine:a. Special modifications shall be made at the

factory to permit operation with leavingchilled fluid temperatures between 15 and32 F (–9.4 to 0.0° C).

b. Unit shall be provided with a factory-installedliquid line solenoid (per refrigerant circuit) tobe used in medium temperature brine andcondenserless applications.

9. Strainer:A Y strainer shall be available in sizes 1.5 to6 in. with a minimum of 40 mesh for field-installation.

10. Remote Enhanced Display:Unit shall be supplied with indoor-mounted,remote, 40-character per line, 16-line displaypanel for field installation.

11. Energy Management Module (EMM):A factory or field-installed module shall providethe following energy management capabilities:4 to 20 mA signals for leaving fluid temperaturereset, cooling set point or demand limit control;2-point demand limit control (from 15% to100%) activated by a remote contact closure;and discrete input for “Ice Done” indication forice storage system interface.EMM shall be capable of:a. Leaving temperature reset form space tem-

perature, outdoor temperature, or 4 to 20mA signal.

b. Demand limit or load shed via field supplied4 to 20 mA signal or 2-step discrete contactclosure.

12. BACnet Translator Control:Unit shall be supplied with field-installed inter-face between the chiller and a BACnet LocalArea Network (LAN, i.e., MS/TP EIA-485).

13. LON Translator Control:Unit shall be supplied with field-installed inter-face between the chiller and a Local OperatingNetwork (LON, i.e., LonWorks FT-10A ANSI/EIA-709.1).

14. Navigator™ Hand Held Display Module:a. Portable hand held display module with a

minimum of 4 lines and 20 characters perline, or clear English, Spanish, Portugueseor French language.

b. Display menus shall provide clear languagedescriptions of all menu items, operatingmodes, configuration points and alarm diag-nostics. Reference to factory codes shall notbe accepted.

Guide specifications (cont)

27

c. RJ-14 connection plug shall allow displaymodule to be connected to factory-installedreceptacle.

d. Industrial grade coiled extension cord shallallow the display module to be movedaround the chiller.

e. Magnets shall hold the display module to anysheet metal panel to allow hands-freeoperation.

f. Display module shall have NEMA 4x hous-ing suitable for use in outdoor environments.

g. Display shall have back light and contrastadjustment for easy viewing in bright sun-light or night conditions.

h. Raised surface buttons with positive tactileresponse.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Pg 28 Catalog No. 04-52300023-01 Printed in U.S.A. Form 30MP-1PD

Replaces: NewSection 9Tab 9b

Carrier Corporation • Syracuse, New York 13221 1-10