installer's guide 4wcy4-ig-6 - climate solutions inc. · installer’s guide important: read...

Installer's Guide

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

Single Packaged Heat Pump, 14 SEERConvertible, 2 - 5 Ton, R-410A

WARNING: HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE CAPACITORS BEFORE SERVICING

IMPORTANT — This Document is customer property. Please return to service information pack and give this Installer's Guide to the homeownerupon completion of work.

4WCY4024A through 4WCY4060A

18-BB34-D1-64WCY4-IG-6

Installer’s Guide

IMPORTANT: Read this entire manual before beginning installation procedures.Safety Considerations

Read this manual carefully before attempting to install, operate, orperform maintenance on this unit. Installation and maintenanceshould be performed by qualified service technicians only.

NOTE: "Warnings" and "Cautions" appear at appropriateplaces in this manual. Your personal safety and the properoperation of this air conditioning product require that you followthem carefully. The manufacturer assumes no liability forinstallations or servicing performed by unqualified personnel.

WARNING: Indicates a potentially hazardous situa-tion which, if not avoided, could result in death orserious injury.

CAUTION: Indicates a potentially hazardous situa-tion which, if not avoided, may result in minor ormoderate injury. It may also be used to alert againstunsafe practices and where property-damage-onlyaccidents could occur.

NOTICEWarning and Cautions appear at appropriatelocations throughout this guide. Read thesecarefully.

SAFETY HAZARD!Bodily injury can result from high voltage electrical compo-nents, fast moving fans, and combustible gas. For protectionfrom these inherent hazards during installation and service,the electrical supply must be disconnected and the main gasvalve must be turned off. If operating checks must be per-formed with the unit operating, it is the technicians responsi-bility to recognize these hazards and proceed safely.

▲▲ WARNING!

SAFETY HAZARD!This information is for use by individuals having adequatebackgrounds of electrical and mechanical experience. Anyattempt to repair a central air conditioning product may resultin personal injury and/or property damage. The manufactureror seller cannot be responsible for the interpretation of thisinformation, nor can it assume any liability in connection withits use.

▲▲ WARNING!

SAFETY HAZARD!Do not operate the unit without the evaporator fan or coilaccess panels in place. Reinstall the access panels afterperforming maintenance proceedures on the fan. Operatingthe unit without the access panels properly installed mayresult in severe personal injury or death.

▲▲ WARNING! IMPORTANT: Wear appropriate gloves, arm sleeve protectors,and eye protection when servicing or maintaining thisequipment.

IMPORTANT: This product has been designed and manufac-tured to meet ENERGY STAR criteria for energy efficiency.However, proper refrigerant charge and proper air flow arecritical to achieve rated capacity and efficiency. Installation ofthis product should follow the manufacturer’s refrigerantcharging and air flow instructions. Failure to confirm propercharge and airflow may reduce energy efficiency andshorten equipment life.

IMPORTANT: Reconnect all grounding devices. All parts of thisproduct capable of conducting electrical current are grounded. Ifgrounding wires, screws, straps, clips, nuts, or washers used tocomplete a path to ground are removed for service, they must bereturned to their original position and properly fastened.

▲▲ CAUTION!

▲▲ CAUTION!

CONTAINS REFRIGERANT!SYSTEM CONTAINS OIL AND REFRIGERANT UNDER HIGHPRESSURE. RECOVER REFRIGERANT TO RELIEVE PRES-SURE BEFORE OPENING SYSTEM. Failure to follow properprocedures can result in personal illness or injury or severeequipment damage.

▲▲ CAUTION!

RECONNECT ALL GROUNDING DEVICES.All parts of this product that are capable of conductingelectrical current are grounded. If grounding wires, screws,straps, clips, nuts, or washers used to complete a path toground are removed for service, they must be returned totheir original position and properly fastened.

▲▲ CAUTION!

Hot Surface!Do Not touch top of compressor. May cause minor to severeburning.

Unit contains R-410A Refrigerant!R-410A operating pressure exceeds the limit of R-22. Properservice equipment is required. Failure to use proper servicetools may result in equipment damage or personal injury.

SERVICEUse only R-410A Refrigerant and approved POE com-

pressor oil.

▲▲ CAUTION!Caution must be taken at all times to avoid personal injuriesand/or damage to equipment.

Installer’s GuideIntroductionContents

Safety Considerations 2Introduction 3Step 1-Inspect Shipment 3Step 2-Determine Unit Clearances 4Step 3-Review Location and Recommendation

Information 10Step 4-Unit Installation 11 Ground Level Installation 11 Rooftop Installation -- Curb Mounting 11 Covert Horizontal Airflow to Down Airflow 11 Install Full Perimeter Roof Mounting Curb 11 Lifting and Rigging 12 Placing the Unit on the Mounting Curb 13 Rooftop Installation -- Frame Mounting 14 Rooftop Installation -- No Curb/Frame 14 Ductwork Installation 16 Attaching Downflow Ductwork to Roof Curb 16 Attaching Horizontal Ductwork to Unit 16 Condensate Drain Piping 16 Air Filter Installation 16 Electrical Wiring 17 Electrical Connections 17 Electrical Power 17 Disconnect Switch 17 Overcurrent Protection 17 Power Wiring 17 Field Wiring Diagram 18 Control Wiring (Class II) 19Step 5-Unit Startup 19 Pre-start Quick Checklist 19 Starting the Unit in the Cooling Mode 19 Operating Pressures 19 Voltage Check 19 Cooling Shut Down 19 Starting the Unit in Heating Mode 20 Heating Shutdown 20Sequence of Operation 20ECM Fan Motor Adjustment 20Demand Defrost Operation 21 Defrost Control 21Final Installation Checklist 21Maintenance 21 Owner Maintenance 21 Service Maintenance 21 Cooling Season Heating SeasonWarranty Information 22

Read this manual carefully before attempting to install, operate,or perform maintenance on this unit. Installation and maintenanceshould be performed by qualified service technicians only. Thisunit is listed by Underwriters Laboratory.

Model 4WCY4 heat pump units are designed for outdoormounting with a vertical condenser discharge. They can belocated either at ground level or on a roof in accordance with localcodes. Each unit contains an operating charge of refrigerant asshipped.

Extreme mounting kits are available for slab (BAYEXMK003A),utility curb (BAYEXMK002B) and perimeter curb(BAYEXMK001A) mountings.

This guide is organized as follows:

� Step 1 - Inspect Shipment

� Step 2 - Determine Unit Clearances

� Step 3 - Review Location and Recommendation Information

� Step 4 - Unit Installation

� Step 5 - Unit Startup

� Sequence of Operation

� Maintenance

Step 1—Inspect Shipment1. Check for damage after the unit is unloaded. Report

promptly to the carrier any damage found to the unit. Do notdrop the unit.

IMPORTANT: To prevent damage to the sides and top ofthe unit when hoisting, retain the top shipping skid on theunit or use “spreader bars” as shown on page 14.

2. Check the unit’s nameplate to determine if the unit is correctfor the intended application. The power supply must beadequate for both the unit and all accessories.

3. Check to be sure the refrigerant charge has been retainedduring shipment. Remove the Compressor access panel toaccess the 1/4" flare pressure taps.

4. If this unit is being installed on a curb, verify that the correctcurb is provided with the unit.

• 4WCY4024-036 use model BAYCURB050A.

• 4WCY4042-060 use model BAYCURB051A.

5. If the unit is being hoisted, accessory kit BAYLIFT002A isrecommended. It includes a kit of four (4) lifting lugs andinstructions.

NOTE: If practical, install any internal accessories to the unitat the shop.

Installer’s GuideStep 2—Determine Unit Clearances

Figures 1 through 6 show the unit critical dimensions.

Figure 1. 4WCY4024A through 4WCY4036A (1 of 3)

NOTE: The viewlabeled “BottomSide” representsthe Base as viewedlooking up from

underneath the unit.

Installer’s Guide


Installer’s Guide


NOTE: The viewlabeled “BottomSide” representsthe Base as viewedlooking up from

underneath the unit.

Installer’s Guide


Installer’s Guide

NOTE: The unit is shipped for horizontal installation.

Horizontal Airflow Units

1. Location of the unit must allow service clearance around it toensure adequate serviceability, maximum capacity, and peakoperating efficiency.

2. These units are design certified for outdoor installation. Theymay be installed directly on a slab, wood flooring, or on Class A,B, or C roof covering material. The discharge air from thecondenser fans must be unrestricted for a minimum of 3 feetabove the unit.

3. Exhaust vents or other sources of contaminated air should notbe near the unit’s air inlet if outside air is to be introduced asmake-up air or a ventilation feature is to be used. Contaminationfrom exhaust vents or chimneys may also foul the condensercausing degraded performance.

4. Check the handling facilities to ensure the safety of personneland the unit(s).

5. The unit must be mounted level for proper drainage of waterthrough the drain holes in the base pan.

6. The unit should not be exposed to direct roof water runoff.

7. Flexible duct connectors must be of a flame retardantmaterial. All duct work outside of the structure must beinsulated and weatherproofed in accordance with local codes.

8. Holes through exterior walls or roof must be sealed inaccordance with local codes.

9. All fabricated outdoor ducts should be as short as possible.

Clearances

1. The recommended clearances for single-unit installations areillustrated in Figures 1 to 6, pages 4-9.

2. Any reduction of the unit clearances indicated in these figuresmay result in condenser coil starvation or the recirculation ofwarm condenser air. Actual clearances, which appear to beinadequate should be reviewed with a local engineer.

3. See the unit’s nameplate for the absolute minimum clearancebetween the unit and any combustible surfaces.

Down Airflow Units

1. Location of the unit must allow service clearance around it toensure adequate serviceability, maximum capacity, and peakoperating efficiency.

2. Refer to the Installation section for instruction on converting thesupply and return airflow covers to down airflow.

3. The field assembled Roof Mounting Curb (BAYCURB050Aor BAYCURB051A) or a field fabricated curb should be inplace before the unit is hoisted to the roof top.

The Roof Mounting Curb (frame) must be installed on aflat, level section of the roof (maximum of 1/4" per footpitch) and provide a level mounting surface for the unit.Also, be sure to provide sufficient height above the roofto prevent water from entering the unit.

4. Be sure the mounting curb spans structural members (trusses) ofthe roof, thereby providing sufficient support for the weight of theunit, the curb, the duct(s), and any factory or field installedaccessories.

5. The unit must be mounted level for proper drainage of waterthrough the drain holes in the base pan.

6. Be sure the hole in the structure for the ducts is large enoughto accommodate the fabricated ducts and the insulationsurrounding them. Flexible duct connectors must be of aflame retardant material. All duct work outside of thestructure must be insulated and weatherproofed inaccordance with local codes.

7. Holes through exterior walls or roof must be sealed inaccordance with local codes.

8. These units are design certified for outdoor installation. Theymay be installed directly on a slab, wood flooring, or on ClassA, B, or C roof covering material. The discharge air from thecondenser fans must be unrestricted for a minimum of 3 feetabove the unit.

9. Exhaust vents or other sources of contaminated air should not benear the unit’s air inlet if outside air is to be introduced as make-up air or a ventilation feature is to be used. Contamination fromexhaust vents or chimneys may also foul the condenser causingdegraded performance.

10. Check the handling facilities to ensure the safety ofpersonnel and the unit(s).

Clearances1. The recommended clearances for single-unit installations are

illustrated in Figures 1 to 6, pages 4-9.2. Any reduction of the unit clearances indicated in these figures

may result in condenser coil starvation or the recirculation ofwarm condenser air. Actual clearances, which appear to beinadequate should be reviewed with a local engineer.

3. See the unit’s nameplate for the absolute minimum clearancebetween the unit and any combustible surfaces.

Step 3—Review Location and Recommendation Information

▲▲ CAUTION!Caution must be taken at all times to avoid personal injuriesand/or damage to equipment.

Installer’s Guide

Figure 7. Typical Ground Level Applications

Note: Use the extrememounting kit, BAYEXMK003AA,to secure the unit to the slab.

Step 4—Unit InstallationNOTE: The factory ships this unit for horizontal installation.

Ground Level InstallationTo install the unit at ground level:

1. Place the unit on a pad the size of the unit or larger. The unitmust be mounted level for proper drainage of water throughthe holes in the base pan. To attach the unit securely to theslab, use extreme mounting kit, BAYEXMK003A.

The pad must not come in contact with the structure (seeFigure 7.) Be sure the outdoor portion of the supply andreturn air ducts are as short as possible.

Unit requires vibration support as indicated in Figure 7 belowand in Figure 9 on page 13.

2. Location of the unit must allow service clearance around it.Clearance of the unit must be given careful consideration.See Figures 1 to 6, pages 4-9.

NOTE: Any reduction of the unit clearances indicated inthese illustrations may result in condenser coil starvation orthe recirculation of warm condenser air. Actual clearances,which appear to be inadequate should be reviewed with alocal engineer.

IMPORTANT: The air outlet duct must have 1" clearance tocombustible material downstream from the unit.

3. Attach the supply and return air ducts to the unit as explainedin the following Ductwork Installation section on page 16.

4. Flexible duct connectors must be of a flame retardantmaterial. Insulate any ductwork outside of the structure withat least two (2) inches of insulation and weatherproof. Theremust be a weatherproof seal where the duct enters thestructure.

5. Do not expose the unit to direct roof water runoff.

6. Seal all holes through exterior walls in accordance with localcodes.

7. Continue with the following installation sections to completethe installation: Ductwork on page 16, Filter on page 16, andElectrical Wiring on page 17.

Rooftop Installation -- Curb MountingConvert Horizontal Airflow to Down AirflowThe factory ships the unit for horizontal airflow. Perform this procedureto convert the unit to down airflow:

1. Remove the three (3) sheet metal screws securing the supply aircover and the four (4) sheet metal screws securing the return aircover from the base of the unit. Remove the covers from the base.See Figure 8, page 12.

2. Place the covers over the horizontal supply and return openings(painted side out). Align the screw holes, and secure using thesame screws removed in step 1.

Install Full Perimeter Roof Mounting Curb

1. Verify that the roof mounting curb is correct for the unit. There are two curbs depending on the unit cabinet sizes: • 4WCY4024 through 4WCY4036 use model BAYCURB050A. • 4WCY4042 through 4WCY4060 use model BAYCURB051A.

2. Assemble and install the curb following the instructions in the Installer's Guide included with the curb.

SIDING

RETURNAIRDUCT

SUPPLYAIRDUCT

EXTERIORWALL

INSULATEWEATHERPROOFOR RAIN SHIELD

FLEXIBLE DUCTCONNECTORS

3/4" VIBRATION ISOLATORS, USE 7 ISOLATORS ASSHOWN IN FIGURE 9, PAGE 13.

SUPPORT PADFOUNDATION

OUTDOOR AIRDISCHARGE

Installer’s Guide

Figure 8. Converting Horizontal to Down Airflow

Placing the Unit on the Mounting Curb 1. The unit is designed with a perimeter drip lip that is lower than

the unit base pan, see Figure 10, inset A, on page 14.

2. Position the unit drip lip down over and in contact with theoutside corner of the curb, as illustrated in Figure 10, inset A,on page 14. Continue to lower the unit on top of the curb, withthe unit drip lip astraddle, and in contact with, both the end andside rail of the curb. The unit should now rest on top of the curb.Use the extreme mounting kit, BAYEXMK001A, to add addi-tional hold down strength to the mounting.

NOTE: The ductwork is installed as part of the curb installation.Do not attach ductwork to the unit and lower the unit withductwork onto the curb.

Lifting and Rigging

Improper Unit Lift!Test lift unit approximately 24 inches to verify propercenter of gravity lift point. To avoid dropping of unit,reposition lifting point if unit is not level. Failure to properlylift unit could result in death or serious injury or possibleequipment or property-only damage.

▲▲ WARNING!

IMPORTANT: Do not lift the unit without test lifting for balanceand rigging. Do not lift the unit in windy conditions or abovepersonnel. Do not lift the unit by attaching clevis, hooks, pins, orbolts to the unit casing, casing hardware, corner lugs, angles,tabs, or flanges. Failure to observe these warnings may resultin equipment damage.

1.Before preparing the unit for lifting, check the unit dimensiondrawings for center of gravity for lifting safety (Figures 1 to 6,page 4-9). Because of placement of internal components, the unit’sweight may be unevenly distributed. Approximate unit weights arealso provided in the unit drawings.

NOTE: When unit rigging and hoisting it is recommended thataccessory kit BAYLIFT002B be used. It includes a kit of four (4)lifting lugs. See Figure 10 inset B, on page 14.

2. Insert the four lifting lugs in the openings provided in the driplip on each end of the unit. See Figure 10 inset B on page 14.A tap or jerk to the lug will overcome the interference that arisesdue to the dimple on the lug.

3. When hoisting the unit, be sure that a proper method of riggingis used. Use either the unit's top shipping skid with straps orslings and spreader bars for protection during lifting. Alwaystest-lift the unit to determine the exact unit balance and stabilitybefore hoisting it to the installation location.

4. When the curb and air ducts have been properly installed, theunit is ready to be hoisted to the roof and set in position.

IMPORTANT: To prevent damage to the sides and top of theunit when hoisting, retain the top shipping skid on the unit or use“spreader bars” as shown on page 14.

IMPORTANT: The unit must be lowered into position. TheP.V.C. rubber tape on the curb flange permits the unit to berepositioned if required without destroying the P.V.C. rubberseal affixed to the mounting curb.

Installer’s Guide

Rooftop Installation -- Frame MountingFor roof top applications using field fabricated frame and ducts, usethe following procedure:

1. Locate and secure the frame to the roof by bolting or welding.Frame must provide adequate center support via a crossmember centrally located channel rail. See Figures 12 and 13on page 15. Vibration isolators should be installed as indicatedin Figure 9, adjust as necessary for your frame. The isolatorsmust be placed on base pan, not drip lip. Add flashing asrequired. Flashing must conform to local building codes.

2. Prepare the hole in the roof in advance of installing the unit.

3. Secure the horizontal or down airflow ducts to the roof. Referto the previous Convert from Horizontal Airflow to Down Airflowsection on page 11, if conversion is needed.


5. Place the unit on the frame. Refer to Figures 12 or 13 on page15.

6. The unit must be mounted level for proper drainage of waterthrough the holes in the base pan.

7. Secure the unit to the frame.

8. Insulate any ductwork outside of the structure with at least two(2) inches of insulation and then weatherproof. There must bea weatherproof seal where the duct enters the structure.


10. Flexible duct connectors must be of a flame retardant material.All duct work outside of the structure must be insulated andweatherproofed in accordance with local codes.

11. Access and service clearances for the unit must be givencareful consideration when locating the duct entrance open-ings. Figures 1 to 6, on pages 4-9, provide unit dimensions.


Figure 9. Vibration Isolators/Snow Feet Locations

Small Cabinet*****018-036

Medium Cabinet*****042-060

Rooftop Installation -- Flat Roof - No Curb/FrameFor roof top applications using field fabricated ducts and sleeperrails rather than a curb or frame, use the following procedure:

1. Locate and secure the sleeper rails to the roof by bolting. Three(3) sleeper rails are required. One on each end to support theedges of the unit and one across the center of the unit. Thecenter rail must run inside both drip lips. Vibration isolatorsshould be installed as indicated on Figure 9, adjust as neces-sary for your sleeper rails. The isolators must be placed on basepan, not drip lip. Add flashing as required. Flashing mustconform to local building codes.

2. Prepare the hole in the roof in advance of installing the unit.

3. Secure the horizontal or down airflow ducts to the roof. Referto the previous Convert from Horizontal Airflow to Down Airflowsection on page 11, if conversion is needed.


5. Place the unit on the rails.

6. The unit must be mounted level for proper drainage of waterthrough the holes in the base pan.

7. Secure the unit to the rails.

8. Insulate any ductwork outside of the structure with at least two(2) inches of insulation and then weatherproof. There must bea weatherproof seal where the duct enters the structure.


10. Flexible duct connectors must be of a flame retardant material.All duct work outside of the structure must be insulated andweatherproofed in accordance with local codes.

11. Access and service clearances for the unit must be givencareful consideration when locating the duct entrance open-ings. Figures 1 to 6, on pages 4-9, provide unit dimensions.


IMPORTANT: Unit requires vibration isolator support in the general areas shown. Locate 3/4" thick vibration isolators onthe bottom of the basepan as illustrated by black dots for ground level pad applications. Modify vibration isolator locationas necessary for frame and rail applications.

NOTE: These views represent the base as viewed looking up from underneath the unit.

Installer’s Guide

Figure 10. Lifting and Rigging

This drawing was prepared by the manufacturer in order to provide detail regarding job layout only. This drawing isnot intended to be used as a basis to construct, build or modify the item depicted in the drawing. The manufactureris not responsible for the unauthorized use of this drawing and expressly disclaims any liability for damagesresulting from such unauthorized use.

Gasket Seal

Spreader Bars

Base of unitrest on top ofcurb rails

Drip lip onperimeter ofunit

Top shipping skid attached to unit

IMPORTANT: To prevent damageto the sides and top of the unit whenhoisting, retain the top shipping skidon the unit or use “spreader bars” asshown in these illustrations.

Figure 11. Curb Dimensions

Drip Lip

DimpleBAYLIFT002ALifting Lugs

Installer’s Guide

Figure 13. Typical Rooftop Down Airflow Application with Frame

Figure 12. Typical Rooftop Horizontal Airflow Application with Frame

Supply Air

Return Air

Roof Flashing

Channel Iron CenterSupport (CenterSupport required onall Frame Applica-tions.)

Angle Iron Frame

Roof Flashing

Return Air

Angle Iron Frame

Roof Flashing

Supply Air

Channel Iron Center Support(Center Support required on allFrame Applications.)

Installer’s Guide

Air Filter InstallationThe packaged unit requires an air filter. The unit does not comewith a factory installed filter rack in it, however, two filter frameaccessories are offered that will allow the installation of a filterwithin the unit, BAYFLTR101 & BAYFLTR201. Otherwise a fieldsupplied filter rack must be installed by the installer in the returnduct work. Refer to Table1 to determine filter sizes for field suppliedfilter racks.

FIELD DUCT

UNIT DUCTFLANGE

UNIT BASE

AIR PROOFTHIS SEAM

FIELD DUCT

UNIT DUCTFLANGE UNIT BASE

AIR PROOFTHIS SEAM

FIELDDUCT

UNIT DUCT FLANGE

UNIT BASE

AIR PROOFTHIS SEAM

FIELD DUCT

UNIT DUCTFLANGE

UNIT BASE

NOT RECOMMENDED

WATERPROOF SEAMWITH BUTYL OR

SILICONE

Attaching Horizontal Ductwork to UnitAll conditioned air ductwork should be insulated to minimizeheating and cooling duct losses. Use a minimum of two (2) inchesof insulation with a vapor barrier. The outside ductwork must beweatherproofed between the unit and the building.

When attaching ductwork to a horizontal unit, provide a flexiblewatertight connection to prevent noise transmission from the unit tothe ducts. The flexible connection must be indoors and made outof heavy canvas.

NOTE: Do not draw the canvas taut between the solid ducts.

Attaching Downflow Ductwork to Roof CurbSupply and return air flanges are provided on the roof curb for easyduct installation. All ductwork must be run and attached to the curbbefore the unit is set into place.

Attaching Downflow Ductwork to Roof FrameFollow these guidelines for ductwork construction:

Connections to the unit should be made with three (3) inch canvasconnectors to minimize noise and vibration transmission.

Elbows with turning vanes or splitters are recommended to mini-mize air noise and resistance.

The first elbow in the ductwork leaving the unit should be no closerthan two (2) feet from the unit, to minimize noise and resistance.

To prevent leaking, do not attach the ductwork to the bottom of theunit base. Refer to the bottom example in Figure 14, below. Condensate Drain Piping

A 3/4-inch female NPT condensate drain connection is provided onthe evaporator access panel end of the unit. Provide a trap and fillit with water before starting the unit to avoid air from being drawnthrough. Follow local codes and standard piping practices whenrunning the drain line. Pitch the line downward away from the unit.Avoid long horizontal runs. See Figure 16, below.

NOTE: Do not use reducing fittings in the drain lines.

The condensate drain must be:

● Made of 3/4" pipe size.

● Pitched 1/4" per foot to provide free drainage to convenient drainsystem.

● Trapped.

● Must not be connected to a closed drain system unless the trapis properly vented.

Ductwork Installation

Figure 16. Typical Condensate Drain Piping

Figure 15. Attaching Horizontal Airflow Ductwork

FIELD DUCT

UNIT EXTERIOR

WEATHERPROOFTHIS SEAM

FIELD DUCT

UNIT EXTERIOR

WEATHERPROOFTHIS SEAM

3/4" PVC OR COPPERTUBING AND FITTINGS

1-1/2" MIN.

1-1/2" MIN.Figure 14. Attaching Down Airflow Ductwork

Installer’s Guide

*Filters must be installed in the return air system. The above squarefootages are based on 300 F.P.M. face velocity. If permanent filters areused, size per mfg. Recommendation with clear resistance of 0.05"WC.

Table 1. Filter Sizes (field supplied filter rack)NOMINAL FILTER

CFM SIZE(Sq Ft)

4*CY4024A 800 2.67 0.08

4*CY4030A 1000 3.33 0.08

4*CY4036A 1200 4 0.08

4*CY4042A 1400 4.67 0.08

4*CY4048A 1600 5.33 0.084*CY4060A 2000 6.67 0.08

UNITFILTER

RESISTANCE ("W.C.)

Electrical ConnectionsElectrical wiring and grounding must be installed in accordancewith local codes or, in the absence of local codes, with the NationalElectrical Code ANSI/NFPA 70, Latest Revision.

Electrical PowerIt is important that proper electrical power be available for the unit.Voltage variation should remain within the limits stamped on theunit nameplate.

Disconnect SwitchProvide an approved weatherproof disconnect within close prox-imity and within sight of the unit. If disconnect must be mountedto the cabinet, the location shown in Figure 19 should be the onlyone considered.

Over Current ProtectionThe branch circuit feeding the unit must be protected as shown onthe unit's rating plate.

Power WiringThe power supply lines must be run in weather-tight conduit to thedisconnect and into the side of the unit control box. Provide strainrelief for all conduit with suitable connectors.

Provide flexible conduit supports whenever vibration transmissionmay cause a noise problem within the building structure.

1. Remove the Control/Heat access panel. Pass the powerwires through the Power Entry hole in the end of the unit.See Figure 17.

2. Connect the high voltage wires to the appropriate contactorterminals. Single phase units use a two (2) pole contactorand three phase units use three (3) pole contactor. Connectthe ground to the ground lug on the chassis. See Figure 18.

Be sure all connections are tight.

GROUNDING: THE UNIT MUST BE ELECTRICALLYGROUNDED IN ACCORDANCE WITH LOCAL CODES ORTHE NATIONAL ELECTRIC CODE.

Electrical WiringNote: This unit is factory wired for 230V. See wiring diagramfor 208V conversion.

Contactor

Unit Ground Lug

Figure 18. Power Connections

Figure 17. Power Wiring

Figure 19. Mounted Disconnect Location

Run power supply Lines through weather-tightconduit and secure to unit with strain relief

Installer’s Guide

COMMONFAN

COMPRSSOR1ST STAGE ELECTRIC HEAT

2ND STAGE ELECTRIC HEATSWITCHOVER VALVE

DEFROST CONTROL 'T' SIGNAL

24 VOLTS

BGY

W1W2OTR

UNIT LOW VOLTAGE AREA

TYPICAL THERMOSTAT

UNIT HEATER AREA

ELECTRICHEATERCONTROLBOX

POLARIZEDPLUG

UNIT CONTROL BOX

3 PHPOWERUNIT

NOTE 1,8

3 PHPOWERHEATER

1 PHPOWER

1 PHPOWER

UNIT CONTROLBOX

UNIT HEATER AREA

FACTORY PROVIDEDFIELD CONNECTEDWIRES

(BL)

(YL)

(GR)

(PR)

(OR)

(OR)

B

G

Y

W1W2

O

T

R

(BR)

(RD)

(GR)

(BL)

(WH)(WH)

(YL)

(OR)

1 PHPOWER

3 PHPOWER

GROUNDWIRE

SINGLE POWR ENTRY

W1W2

(WH)(WH)

W1

W2

(WH)

(WH)

HEATER SECOND STAGE AMBIENTTEMPERATURE LOCKOUTNOTE 7,8

UNIT LOWVOLTAGEAREA

OUTDOORTHERMOSTATACCESSORYBAYSTAT033A

NOTE 10

HEATER AMBIENTTEMPERATURE LOCKOUTNOTE 7,8

UNIT LOWVOLTAGEAREA

OUTDOORTHERMOSTATACCESSORYBAYSTAT033A

NOTE 10

TYPICAL THERMOSTATTYPICAL THERMOSTAT

TYPICAL 2-STAGE THERMOSTAT

UNIT LOWVOLTAGE AREA

UNIT LOWVOLTAGE AREA

TO COMPR.CONTACTOR

ELECTRICHEATERCONTROLBOX

HEATERFUSES

UNITFUSES

SPEACCESSORYKIT

TO ECONOMIZERFACTORY PROVIDEDFIELD INSTALLED WIRES

NOTE 9

(NOT APPLICABLE TO THE WCM---F MODELS)

FIG. 3 OUTDOOR THERMOSTAT ACCESSORY CONNECTIONS

FIG. 1 SINGLE POWER ENTRY ACCESSORY CONNECTIONS FIG. 2 ECONOMIZER ACCESSORYCONNECTIONS

GROUNDWIRE

SEE SPEK INSTALLER'S GUIDEFOR ALL OTHER EXAMPLES

Figure 20. 4WCY4 Field Wiring Diagram

NOTES:

1. FUSED DISCONNECT SIZE, POWER WIRING ANDGROUNDING OF EQUIPMENT MUST COMPLYWITH CODES.

2. BE SURE POWER SUPPLY AGREES WITHEQUIPMENT AND HEATER NAMEPLATE.

3. LOW VOLTAGE WIRING TO BE 18 AWG MINIMUMCONDUCTOR.

4. SEE HEATER NAMEPLATE FOR CURRENTRATING OF HEATER USED.

5. SEE UNIT AND HEATER DIAGRAM FORELECTRICAL CONNECTION DETAILS.

6. IF ELECTRIC HEATER ACCESSORY IS NOTINSTALLED OMIT THE ELECTRIC HEATER,ASSOCIATED POWER WIRES AND THE ‘W’ AND‘X2’ THERMOSTAT WIRES.

7. FIG. 3 DEMONSTRATES CONNECTION OF THEOUTDOOR THERMOSTAT ACCESSORY ONLY.FOR FURTHER UNIT CONNECTION DETAILSREFER TO THE OTHER FIGURES.

8. THE 41A(BR) WIRE IS FIRST STAGE ELECTRICHEAT. IF THE ELECTRIC HEATER ACCESSORYHAS TWO HEATING STAGES THE 41C(BR) WIREIS SECOND STAGE ELECTRIC HEAT.

9. WHEN THE BAYECON054A OR –055AECONOMIZER IS INSTALLED THE BAYRLAY003RELAY ACCESSORY KIT IS REQUIRED TOINTERFACE THE ECONOMIZER TO THE HEATPUMP FOR PROPER SYSTEM OPERATION.WHEN THE BAYECON054B OR –055B OR 073AECONOMIZER IS INSTALLED, THEBAYRLAY004A RELAY ACCESSORY KIT ISREQUIRED TO INTERFACE THE ECONOMIZER TOTHE HEAT PUMP FOR PROPER SYSTEMOPERATION.

10. THE BAYSTAT033A OUTDOOR THERMOSTATACCESSORY KIT CONTAINS A THERMOSTATAND A RELAY. THE RELAY IS NOT REQUIREDTO BE USED IN THIS APPLICATION.

Field Wiring Diagram

Installer’s Guide

Starting the Unit in Cooling Mode

Control Wiring (Class II)Low voltage control wiring should not be run in conduit with powerwiring unless Class 1 wire of proper voltage rating is used. Routethe thermostat cable or equivalent single leads of No. 18 AWGcolored wire from the thermostat subbase terminals through therubber grommet on the unit. See Figures 1-6 (pages 4-9) for thecontrol entry (24V Entry) location. Make connections as shown onthe field wiring diagram Figure 20, page 18.

Do not short thermostat wires since this will damage the controltransformer.

Refer to Table 2 for recommended wire sizes and lengths forinstalling the unit thermostat. The total resistance of these lowvoltage wires must not exceed one (1) ohm. Any resistance inexcess of 1 ohm may cause the control to malfunction because ofthe excessive voltage drop.

IMPORTANT: Upon completion of wiring, check all electricalconnections, including factory wiring within the unit, and make sureall connections are tight. Replace and secure all electrical boxcovers and access panels before leaving the unit or turning on thepower to the unit.

Pre-Start Quick Checklist

� Is the unit properly located and level with the properclearance? See Figures 1-6, pages 4-9. See Step 2-ReviewLocation and Clearances on page 4.

� Is the duct work correctly sized, run, taped, insulated, andweatherproofed with proper unit arrangement? SeeDuctwork Installation section on page 16.

� Is the condensate line properly sized, run, trapped, andpitched? See Condensate Drain Piping section on page16.

� Is the filter of the correct size and quantity? Is it clean and inplace? See Air Filter Installation section on page 17.

� Is the wiring properly sized and run according to the unitwiring diagram? See Electrical Wiring section on page 17.

� Are all the wiring connections, including those in the unit,tight? See Electrical Wiring section on page 17.

� Has the unit been properly grounded and fused with therecommended fuse size? See Electrical Wiring section onpage 17.

� Is the thermostat well located, level, and correctly wired?See Electrical Wiring section on page 17.

� Have the air conditioning systems been checked at the serviceports for charge and leak tested if necessary?

� Do the condenser fan and indoor blower turn free withoutrubbing, and are they tight on the shafts?

Step 5—Unit Startup

WIRE SIZE MAXIMUM LENTGH (Ft)18 7516 12514 200

Table 2. Thermostat Wire Size and Maximum Length

� Has all work been done in accordance with applicable localand national codes?

� Are all covers and access panels in place to prevent air loss andsafety hazards?

▲▲ CAUTION!Before starting the system on the cooling cycle, turn the thermo-stat switch to OFF and close the unit disconnect switch. This isa precaution against foaming at startup which could damage thecompressor bearings.

Safety Hazard. Do not operate the unit without the evaporatorfan access panel or evaporator coil access panel in place.Reinstall the access panels after performing maintenanceprocedures on the fan. Operating the unit without the accesspanels properly installed may result in severe personal injuryor death.

▲▲ WARNING!

NOTE: See the section on Sequence of Operation , page 20 fora description of the cooling operating sequence.

To start the unit in the cooling mode, set the comfort control toCOOL and to a setting below room temperature. The condenserfan motor, compressor and evaporator fan motor will operateautomatically.

Operating Pressure ChecksAfter the unit has operated in the cooling mode for a short period oftime, install pressure gauges on the gauge ports of the dischargeand suction line valves (behind the Compressor access panel).Check the suction and discharge pressures and compare them tothe normal operating pressures provided in the unit’s SERVICEFACTS.

NOTE: Do not use the pressures from the unit's SERVICEFACTS to determine the unit refrigerant charge. The correctcharge is shown on the unit nameplate. To charge the systemaccurately, weigh in the charge according to the unit nameplate.

Voltage CheckWith the compressor operating, check the line voltage at the unit(contactor is located behind the Control access panel). The voltageshould be within the range shown on the unit nameplate. If lowvoltage is encountered, check the size and length of the supply linefrom the main disconnect to the unit. The line may be undersizedfor the length of the run.

Cooling Shut DownSet the comfort control to OFF or to a setting above room tempera-ture.

IMPORTANT: De-energize the main power disconnect ONLYwhen servicing the unit. Power may be required to keep the heatpump compressor warm and to boil off refrigerant in the compres-sor.

Installer’s Guide

GeneralOperation of the unit heating and cooling cycles is automatic whenthe system is in the HEAT or COOL modes (the optional automaticchangeover thermostat, when set to AUTO, automatically changesto heat or cool with an appropriate room temperature change). Thefan can set to ON, causing continuous evaporator (indoor) fanoperation or set to AUTO causing fan operation to coincide withheating or cooling run cycles. CONTINUOUS fan mode duringCOOLING operation may not be appropriate in humid climates. Ifthe indoor air exceeds 60% relative humidity or simply feelsuncomfortably humid, it is recommended that the fan only be usedin the AUTO mode.

Cooling ModeNote that the TSH and TSC are contacts that are internal to theindoor thermostat.

With the comfort control set to ON, current is supplied to thecompressor crankcase heater and control transformer (the outdoorfan relay (ODF) relay is energized through normally closed con-tacts on the defrost timer control (DFC) on the 460V units only). Thecooling cycle is enabled through the low voltage side of the controltransformer to the “R” terminal on the indoor thermostat. With thesystem switch in the AUTO position and TSC-1 contacts closed,power is supplied to the “O” terminal on the indoor thermostat tothe switchover valve coil (SOV). This energizes the switch-overvalve (SOV) and places it in the cooling position (it is in the heatingposition when de-energized).

When the indoor temperature rises 1-1/2 degrees, TSC-2 contactsclose, supplying power to the “Y” terminal on the indoor thermostat,and to the compressor contactor (CC). This starts the outdoor fanmotor and compressor. The TSC-2 contacts also provide power tothe “G” terminal which provides power to the fan relay (F) startingthe indoor fan motor.

Heating ModeWith the comfort control set to ON, current is supplied to thecompressor crankcase heater and control transformer. (Theoutdoor fan relay (ODF) is energized through normally closedcontacts on the defrost timer control (DFC) on the 460V units).Starting at the “R” terminal on the indoor thermostat, currentgoes through the system switch (which is in AUTO position) tothe TSH-1 contacts. When closed, these contacts supply powerto terminal ”Y” on the indoor thermostat as well as to the

heating anticipator. The switch-over valve will not energizebecause of the high resistance of the heating anticipator in thethermostat. Power is provided from “Y” to the compressorcontactor (CC) which starts the compressor and outdoor fanmotor. The indoor thermostat contact TSH-1 also providespower to “G” terminal on the indoor thermostat energizing thefan relay (F), which starts the indoor fan motor.

Supplementary HeatThe supplementary electric heat is brought on when the indoortemperature drops 1-1/2 degrees below the thermostat setting.TSH-2 contacts close providing power to the “W” terminal on theindoor thermostat and to the supplementary heater control circuit.Note that the fan relay (F) must have been energized. An outdoorthermostat may have been added to disallow the second stage (ifprovided) of electric heat above a selected outdoor temperature. Ifthe outdoor temperature falls below the setting on the outdoorthermostat, this additional heater stage will come on. When theoutdoor air temperature rises, and the outdoor T-stat setpoint isreached, the system will revert back to first stage electric heating.

When the indoor ambient is satisfied, TSH-2 contacts will open andthe unit will revert back to the compressor only heating mode andthen off. For emergency heat (use of supplementary electric heatonly), an emergency (EMERG) heat switch is provided within thethermostat. When placed in the emergency heat position, it willdisable the compressor, bypass the outdoor thermostats, if pro-vided, and engage the supplementary electric heaters and indoorfan.

Sequence of Operation

Starting the Unit in Heating ModeNOTE: See the section on Sequence of Operation for adescription of the heat pump heating operating sequence.

Check that all grills and registers are open and all unit accesspanels are closed before start-up.

Set the comfort control above room temperature until achievinga first stage call for heat and set the fan to AUTO or ON.

Heating Shut DownSet the system selector switch to OFF or place the heating selectorlever at a setting below room temperature.

NOTE: Refer to the SERVICE FACTS for fault detecting, testsensor, and checkout procedures.

ECM Fan Motor AdjustmentsIf the airflow needs to be increased or decreased, see theAirflow Table in the SERVICE FACTS. Information on changingthe speed of the blower motor is in the Blower PerformanceTable. Blower speed changes are made on the ECM FanControl mounted in the control box. The ECM Fan Controlcontrols the variable speed motor. There is a bank of 8 dipswitches, (See Figure 21 below), located on the board. The dipswitches work in pairs to match the cooling/heat pump airflow(CFM/TON), Fan off-delay options and electric heat airflowadjustment. The switches appear as shown in the figure below.

CFM SELECTIONLIGHT

DIP SWITCHES

Figure 21. ECM Fan Control

Installer’s Guide

Owner MaintenanceSome of the periodic maintenance functions of the 4WCY4 unitcan be performed by the owner; this includes replacing thedisposable or cleaning the permanent air filters, cleaning theunit cabinet, and conducting a general unit inspection on aregular basis.

FiltersWhen the system is in constant operation, inspect the filtersat least once each month.

If the unit has disposable-type filters, replace them with newfilters of the same type and size. Do not attempt to cleandisposable filters.

Permanent-type filters can be cleaned by washing them witha mild detergent and water. Make sure that the filters arethoroughly dry before reinstalling them in the unit (or ductsystem).

NOTE: It may be necessary to replace permanent filtersannually if washing fails to clean the filter or if the filtershows signs of deterioration. Be sure to use the same typeand size as was originally installed.

Condenser CoilBe sure to keep all vegetation and debris away from thecondenser coil area.

Maintenance

Service MaintenanceCooling SeasonTo keep the unit operating safely and efficiently, the manufac-turer recommends that a qualified service technician check theentire system at least once each year or sooner if needed. Theservice technician should examine these areas of the 4WCY4unit:

● filters (for cleaning or replacement)

● motors and drive system components

● economizer gaskets (for possible replacement)

● safety controls (for mechanical cleaning)

● electrical components and wiring (for possible replacementand connection tightness)

● condensate drain (for proper sealing and cleaning)

● unit duct connections (to see that they are physically soundand sealed to the unit casing)

● unit mounting support (for structural integrity)

● the unit (for obvious unit deterioration)

Heating SeasonComplete the following unit inspections and service routines atthe beginning of each heating season.

● Visually inspect the unit to ensure that the airflow requiredfor combustion and condenser coil is not obstructed fromthe unit.

● Inspect the control panel wiring to verify that all electricalconnections are tight and that the wire insulation is intact.

� Does the unit run and operate as described in the section onSequence of Operation, page 20, in response to the roomthermostat?

� Are the condenser fan and indoor blower operating correctlywith proper rotation and without undue noise?

� Is the compressor operating correctly and has the system beenchecked with a charging chart?

� Has the voltage and running current been checked to determine if it is within limits?

� Has the thermostat been checked for calibration and the airdischarge grills adjusted to balance the system?

� Has the ductwork been checked for air leaks andcondensation?

� Has the furnace manifold pressure been checked andadjusted if necessary?

� Has the heating air temperature rise been checked?

� Has the unit been checked for tubing and sheet metal rattles?Are there any other unusual noises to be checked?

� Are all covers and panels in place and properly fastened?

� Has the owner been instructed on the proper operation andmaintenance of the unit? Be sure to leave this manual with theowner.

Final Installation Checklist

Demand Defrost OperationDuring the heating cycle, the outdoor coil may require a defrostcycle which is determined by the demand defrost control (DFC).This control continuously measures the outdoor coil temperature(CBS) and the outdoor ambient temperature (ODS-B) and calcu-lates the difference or delta-T measurement. When the calculateddelta-T is met, the demand defrost control (DFC) opens the circuitto the outdoor fan motor (ODM) and energizes the switch-over valve(SOV), placing the unit in the cooling mode to defrost the outdoorcoil (on SCROLL bearing units only, the control will stop thecompressor for a minimum of thirty (30) seconds). The outdoor coiltemperature sensor (CBS) terminates the defrost cycle, or times offafter twelve (12) minutes in defrost, the (DFC) energizes the outdoorfan motor (ODM) and twelve seconds later de-energizes the (SOV),which returns the unit to the heating mode. Supplementary electricheat, if provided, is brought on to control indoor temperature duringthe defrost cycle.

Defrost ControlThe demand defrost control measures heat pump outdoorambient temperature with a sensor located outside the outdoorcoil. A second sensor located on the outdoor coil is used tomeasure the coil temperature. The difference between theambient and the colder coil temperature is the difference ordelta-T measurement. This delta-T measurement isrepresentative of the operating state and relative capacity ofthe heat pump system. Measuring the change in delta-Tdetermines the need for defrost. The coil sensor also sensesoutdoor coil temperature for termination of the defrost cycle.

Installer’s Guide

9 26-1000-21

The limited warranties displayed in this publication and/or on ComfortSite™ may not accurately reflect the actual limited warranty that shipped with the product.

Models Less Than 20 Tons for Residential Use*

Limited WarrantyHigh Efficiency Heat Pump4WCZ6, 4WCY4, 2/4WCX3 and WCZ (Parts Only)

This limited warranty is extended by Trane U.S. Inc., to the original purchaser and to any succeeding owner of the real property to which the Heat Pump is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada.

If any part of your Heat Pump fails because of a manufacturing defect within five years from the date of the original purchase, Warrantor will furnish without charge the required replacement part. Any local transportation, related ser-vice labor, diagnosis calls, refrigerant and related items are not included.

In addition, if the sealed motor-compressor(s) fail(s) or the outdoor coil† should become defective, either or both events occurring because of a manufacturing defect within the sixth through tenth year from the date of original purchase, Warrantor will furnish without charge the required replacement compressor and/or outdoor coil. Any local transportation, related service labor, diagnosis calls, refrigerant and related items are not included.

†NOTE: If your Heat Pump is installed within one mile of salt water, including but not limited to seacoasts and inland waterways, your outdoor coil warranty as stated above is limited to five years from the date of original purchase.

This limited warranty does not cover failure of your Heat Pump if it is damaged while in your possession, damage caused by unreasonable use of the Heat Pump and/or damage from failure to properly maintain the Heat Pump as set forth in the Use and Care manual (see Proper Maintenance section).

THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WAR-RANTIES AND LIABILITIES, WHETHER IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUDING BUT NOT SPECIFICALLY LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL WARRAN-TOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow limitations on how long an implied limited warranty lasts or do not allow the exclusion or limi-tation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Parts will be provided by our factory organization through an authorized service organization in your area listed in the yellow pages. If you wish further help or information concerning this limited warranty, contact:

Trane P. O. Box 9010, Tyler, TX 75711-9010 Attention: Manager, Field Operations Excellence

Or visit our website: www.trane.com/residential

TW-1003-4707

* This limited warranty is for residential usage of this equipment and not applicable when this equipment is used for a commercial application. A commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes.

Installer’s Guide

11 26-1000-21

The limited warranties displayed in this publication and/or on ComfortSite™ may not accurately reflect the actual limited warranty that shipped with the product.

Models Less Than 20 Tons for Commercial Use*

Limited WarrantyHigh Efficiency Heat Pump4WCZ6, 4WCY4, 2/4WCC3, 2/4WCX3, WCZ, WCD, WCH, WCK, WSC (Parts Only)

This warranty is extended by Trane U.S. Inc., to the original purchaser and to any succeeding owner of the real prop-erty to which the Heat Pump is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada. There is no warranty against corrosion, erosion or deterioration.

If any part of your Heat Pump fails because of a manufacturing defect within one year from the date of the original purchase, Warrantor will furnish without charge the required replacement part.

In addition, if the sealed motor-compressor fails because of a manufacturing defect within the second through fifth year from the date of original purchase, Warrantor will furnish without charge the required replacement compressor. Warrantor’s obligations and liabilities under this warranty are limited to furnishing F.O.B. Warrantor factory or ware-house replacement parts for Warrantor’s products covered under this warranty. Warrantor shall not be obligated to pay for the cost of lost refrigerant. No liability shall attach to Warrantor until products have been paid for and then liability shall be limited solely to the purchase price of the equipment under warranty shown to be defective.

THE WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRAN-TIES AND LIABILITIES, WHETHER IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL WARRANTOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Trane P.O. Box 9010 Tyler, TX 75711-9010 Attention: Manager, Field Operations Excellence

TW-1005-4707

* This warranty is for commercial usage of said equipment and not applicable when the equipment is used for a residential application. Commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes.

Installer’s Guide

Trane6200 Troup HighwayTyler, TX 75707-9010

The manufacturer has a policy ofcontinuous product and product dataimprovement. It reserves the right tochange design and specificationwithout notice.© 2008 Trane

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