TRANE Package Units(both Units Combined) Manual L0905292

User Manual: TRANE TRANE Package Units(both units combined) Manual TRANE Package Units(both units combined) Owner's Manual, TRANE Package Units(both units combined) installation guides

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IPTALLATIO

TIO

T A CE

ALL phases of this installation must comply with

NATIONAL, STATE AND LOCAL CODES

Library

Product Section

Product

Model

Literature Type

Sequence

Date

File No.

Supercedes

WCC-|OM-1C

18-BB33D1-4

Service Literature

Unitary

Packaged Heat Pump

WCC

Installation,Operation,Maintence

NOVEMBER 2001

SV-UN-RT-WCC-IOM-1C 11/01

WCC-IOM-1B

Model:

WCC018F1

WCC024F1

WCC030F1

WCC036F1,3,4

WCC042F1,3

WCC048F1,3,4

WCC060F1,3,4

BAYLI FT002AA

LIFTING LUG KIT

Single Package

Convertible

1-1/2 -5Ton

Heat Pump

IM PORTANT--This Document is customer property and is to remain with this unit. Please return to service information pack upon compl etion of work.

II1_

All phases of this installation must comply with the NATIONAL, STATE & LOCAL CODES. In the absence of local codes, the installa-

tion must conform with National Electric Code -- ANSVNFPA 70 or "LATEST REVISION."

GENERAL iNFORMATiON

iMPORTANT: Read this entire manual before beginning instal=

lation procedures.

SAFETY NOTICE• THIS INFORMATION IS INTENDED FOR

USE BY INDIVIDUALS POSSESSING ADEQUATE BACK-

GROUNDS OF ELECTRICAL AND MECHANICAL EXPERI-

ENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDI-

TIONING PRODUCT MAY RESULT IN PERSONAL INJURY

AND/OR PROPERTY DAMAGE• THE MANUFACTURER OR

SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRE-

TATION OF THIS INFORMATION, NOR CAN IT ASSUME

LIABILITY IN CONNECTION WITH ITS USE.

iMPORTANT: RECONNECT ALL GROUNDING DEVICES•

ALL PARTS OF THIS PRODUCT CAPABLE OF CONDUCTING

ELECTICAL CURRENT ARE GROUNDED• IF GROUNDING

WIRES, SCREWS, STRAPS, CLIPS NUTS OR WASHERS

USED TO COMPLETE A PATH TO GROUND ARE REMOVED

FOR SERVICE• THEY MUST BE RETURNED TOTHIER ORIGI-

NAL POSITION AND PROPERLY FASTENED•

IMPORTANT: ALL POWER LEGS MAY NOT BE BROKEN BY

CONTACTORS. SEE WIRING DIAGRAM ON UNIT CONTROL

BOX COVER•

BEFORE STARTING THE COMPRESSOR, THE CRANKCASE

HEATER SHOULD BE ENERGIZED FOR EIGHT HOURS

Read this manual carefully before attempting to install, operate, or

perform maintenance on this unit. Installation and maintenance

should be performed by qualified service technicians only.

NOTE: "Warnings" and "Cautions" appear at appropriate

places in this manual Your personal safety and the proper

operation of this air conditioning product require that you follow

them carefully. The manufacturer assumes no fiabifity for

installations or servicing performed by unquafified personnel.

INSPECTION

1. Check for damage after the unit is unloaded. Report promptly,

to the carrier, any damage found to the unit. Do not drop the unit.

IMPORTANT: The use of "spreader bars" is required when |

hoisting the unit ( to prevent damage to sides and top ). 1

2• Check the unit's nameplate to determine if the unit is correct for

the intended application• The power supply must be adequate

for both the unit and all accessories•

3• Check to be sure the refrigerant charge has been retained during

shipment• Access to 1/4" flare pressure taps may be gained by

removing the furnace compartment access panel•

TYPICAL ROOFTOP INSTALLATION WITH FULL PERIMETER CURBS

(WCC018-060F Models)

~ • •FIELD SUPPLIED

SUPPORTS

AT EACH END

OFCURB

ROOF

FIELD SUPPLIED

RIGIDINSULATION

SUPPLY AIR

DUCT RETURN AIR

DUCT

ROOF MOUNTING

CURB

FIELD SUPPLiED

CANT STRIP

Page 2

@TYPICAL ROOFTOP iNSTALLATiON WITH BAYCURB030A

(WCC018-060F Models)

SEE NOTE 1

SEE NOTE2

•FIELD SUPPLIED

SUPPORTS

AT EACH END

OFCURB

/ROOF

ROOF

FIELD SUPPLIED

RIGID iNSULATiON

NOTE 1: Only the WCC048, 060F Models

extend past both the end and the

side of the curb as illustrated

SEE NOTE 1

SUPPLY AiR

DUCT

ROOF MOUNTING

)CURB

RETURN AiR

DUCT

FIELD SUPPLIED

CANT STRIP

®CONVERTING HORIZONTAL TO DOWNFLOW

HORIZONTAL SUPPLY

AIR COVER

SHEET METAL

SCREWS HORIZONTAL RETURN

AIR COVER

NOTE

SUPPLY OPENING

1 REMOVE THE SCREW NEAREST TO THE

OPENING AND PULL THE PANEL FIRMLY

TOWARD THE OUTSIDE OF THE UNIT TO

DISENGAGE THE BACK ATTACHMENT,

RETURN OPENING

2 REMOVE RIGHT HAND SCREW AND

MOVE PANEL TO THE RIGHT OR

REMOVE BOTH SCREWS

Page 3

DiMENSiONAL DATA

WCC018-060F OUTLINE - BACK

_ _ L_ APPEARANCE SURFACE

OF SUPPLY & RETURN

6 MM PANEL

15 MM

SECT. X-X

OPENING

L &M

DIMENSIONAL

SURFACE (SEE 19 MM

16 MM -- M P 19 MM

SECT. Y-Y

TYPICAL CROSS SECTION

OF HORIZONTAL SUPPLY &

RETURN PERIMETER FLANGES

TYPICAL CROSS SECTION

OF DOWNFLOW SUPPLY &

RETURN PERIMETER FLANGES

MODEL CORNER WEIGHT (LRS) UNIT

WEIGHT

Wl W2 W3 W4

WCCO18F 66 55 72 87

WCCO24F

WCCO30F 77 65 89 105

WCCO36F 97 76 85 108

WCCO42F 94 73 80 104

WCCO48F 126 104 127 153

WCCO60F 131 108 132 159

280 55-1/4 36 25-3/16 18-9/16 11-1/16 6-9/16 6-13/16 17 21-5/16 25-1/2 17-1/2 10 3 4-7/16

336 20-13/1C 25-5/16

366 55-1/4 36 29-3/16 18-9/16 11-1/16 6-9/16 6-13/16 17 19 24-3/16 17-1/2 10 3 4-7/16

351 18-13/1¢ 24

511 24-5/8 28-1/2

64-5/16 45 33-3/8 21-1/16 15-1/16 4-15/16 9-1/8 21-15/16 20 14 3-1/2 8-5/16

529 24-5/8 28-1/2

Page 4

DiMENSiONAL DATA

WCC018-060F OUTLINE FRONT

HOLE FOR 1/2" CONDUIT

(UNIT CONTROL WIRES) --

CONTROL BOX HEATER

ACCESS PANEL ACCESS PANEL

729945

CONDENSER COIL

COIL ]N TH]S

AREA ONLY ON WCC050 & -056F,

TCC042F, WCC042F, WCCO48F &

WCCO6OF

RECOMMENDED SERVICE CLEARANCE

BACK * 152 MM [6.0"]

LEFT SIDE 762 MM [30.0"]

RIGHT SIDE 610 MM [24.0"]

FRONT SIDE 762 MM [30.0"]

•457 MM [18"] WITH FRESH AIR ACCESSORY

•762 MM [30"] WITH ECONOMIZER

MODEL

WCCO18F

WCCO24F

WCCO30F

WCCO36F

WCCO42F

WCCO48F

WCCO60F

55-1/4

64-5/16

25 3/16

29-3/16

33-3/8

12-1 _16

14-1 _16

4-3/8

4-7/8

KNOCKOUTSFORI£"ANDI"CONDUIT

KNOCKOUTSFOR3_"ANDI-I_"CONDUIT

KNOCKOUTSFOR3_"ANDI-I£"CONDUIT

Page 5

REQUIRED CLEARANCE FOR UNiT INSTALLATION

AND ROOF PENETRATION HOLE SiZE REQUIRED

SERVICE

CLEARANCE

LINES

-_. SERVICE

CLEARANCE

LINES

SIDE RAIL

WOOD NAILER _

SERVICE CLEARANCE & PENETRATION DIMENSIONS

MODEL NO. A B C D E F

WCC018-42F 30" 30" "12" 24" 36" 25"

WCC048-060F 42" 30" "12" 36" 50" 25"

* 18" WITH FRESH AIR ACCESSORY

* 30" WITH ECONOMIZER

* 20" WITH WCC042,048,060

HOLE IN ROOF

LOCATIONS AND RECOMMENDATIONS

These units are designed for outdoor installation. For proper instal-

lation, the following recommendations must be considered.

NOTE: Unit shipped for horizontal installation. Convert to down-

flow per instruction.

The discharge air from the condenser fans must be unrestricted for

a minimum of 3 feet above the unit.

Roof Mounting Curb (field assembled BAYCURB030A!038A and

BAYCURB034A) or a field fabricated curb must be in place before

unit is hoisted to the roof.

Roof Mounting Curb (frame) must be installed on a flat, level

section of the roof (max. of 1/4" per foot pitch), providing a level

mounting surface for the unit. In addition, provide sufficient

height above the roof to prevent water from entering unit.

In locations where deep snows are encountered,RAiSE THE UNIT

AMINIMUM OF 12" OFFTHE ROOF, DECKOR SLAB--the chance

of the coil being blocked with snow will be reduced. The water that

occurs during the defrost has a better chance of flowing from the

vicinity of the unit.

Roof Mounting Curb used with WCC--F models is approximately

14" high. This is normally sufficient height to prevent snow blockage

and additional clearance is not necessary.

AVOID LOCATING THE UNIT WHERE SNOWTENDS TO DRIFT.

This will reduce the times when it is necessary for the customer to

remove the snow from around the unit. MAKE CERTAIN THE

CUSTOMER KNOWS THAT SNOW ACCUMULATIONS SHOULD

BE REMOVED FROM THE SIDES OF THE UNIT FOR BEST

EFFICIENCY.

A snow drift barrier may be installed around the unit to prevent a

build up of snow on the sides of the unit. The barrier should be of

sufficient distance from the unitto prevent restriction of airflowto and

from unit.

LOCATE THE UNIT SO THAT THE WATER VAPOR THAT DIS-

CHARGES UPWARD DURING DEFROST DOES NOT CONDENSE

ON WINDOWS AN D FOG THEM OR CAUSE ICICLES TO FORM ON

OVERHANGS.

1. Be sure the mounting curb spans structural members (trusses)

of the roof, thereby providing sufficient support for weight of the

unit, curb and duct(s) plus any accessories (factory or field

installed). See Figures 1,2, 3, 4, 5, 6, 7, 8, 9,10,11 and 12.

NOTE: If any internal accessories are to be added to the unit it should

be done at the shop if at all practical.

2. Unit should be positioned so Roof-Run-Off water does not pour

directly on unit.

Page 6

3. For "Roof Top Application," unit must be elevated above roof with

a mounting Curb or Frame.

4. Exhaust vents or other sources of contaminated air should not

be near unit air inlet if outside air is to be introduced as a make-

up air or the economizer ventilation feature is to be used.

5. Check the handling facilities to insure the safety of personnel and

the unit(s).

6. CAUTION MUST BE TAKEN AT ALL TIMES TO AVOID PER-

SONAL INJURIES AND/OR DAMAGE TO EQUIPMENT.

7. The unit must be mounted level for proper drainage of defrost

water through the holes in the base pan.

8. Flexible duct connectors must be of a flame retardant material. All

duct work outside of the structure must be insulated and weath-

erproofed in accordance with local codes.

9. Roof flashing must be installed to seal the roof curb cavity and

must conform to local building codes.

10. Holes through exterior walls must be sealed in accordance with

local codes.

11. Access and service clearances for the unit must be given careful

consideration when locating the duct entrance openings. Fig-

ures 6 and 8 provide unit dimensions.

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

13. Be sure the hole in the structure for the ducts is large enough to

accommodate the fabricated ducts and the insulation sur-

rounding them. (See Figure 6.)

CLEARANCES

1. The recommended clearances for single-unit installations are

illustrated in Figures 5 and 6. These minimum requirements are not

only an important consideration when determining unit placement,

but they are also essential to ensure adequate serviceability,

maximum capacity, and peak operating efficiency.

2. Any reduction of the unit clearances indicated in this illustration

may result in condenser coil starvation, or the recirculation of warm

condenser air. Actual clearances which appear to be inadequate

should be reviewed with a local sales engineer.

IMPORTANT!: To convert to downflow remove covers from

the downflow supply and return air openings and placethem

over the horizontal supply and return air openings (painted

side out) and secure with sheet metal screws.

iNSTALLATiON

UNIT SUPPORT

If unit is to be roof mounted, check building codes for weight

distribution requirements. Refer to accessory roof curb mounting

instructions. Check unit nameplate for supply voltage required.

Determine if adequate electrical power is available. Refer to speci-

fication sheet.

LOCATION AND CLEARANCES

Installation of the unit should conform to local building codes or, in

the absence of local codes, to the ANSI/NFPA No. 70-1987 National

Electrical Code or "Latest Revision." Canadian installations must

conform to CSA and local codes.

IMPORTANT!: DO NOT LIFT THE UNIT WITHOUT TEST-

LIFTING FOR BALANCE AND RIGGING.DO NOT LIFT THE

UNiT IN WINDY CONDITIONS OR ABOVE PERSONNEL. DO

NOT LiFT THE UNiT BY ATTACHING A CLEVIS, HOOKS,

PINS OR BOLTS TO THE UNiT CASING, CASING HARD-

WARE, ANGLES, TABS OR FLANGES. FAILURE TO OB=

SERVE THESE WARNINGS MAY RESULT IN EQUIPMENT

DAMAGE.

4. When the curb and air ducts have been properly installed, the unit

is ready to be hoisted to the roof and set in position.

I MPORTANT!: "Spreader Bars" must be used when

hoisting unit.

5. IMPORTANT: The unit must be lowered into position P.V.C.

rubber tape on the curb flange permits the unit to be

repositioned if required without destroying the P.V.C. rub=

bet seals affixed to mounting curb.

Select a location that will permit unobstructed airflow into the

condenser coil and away from the fan discharge and permit unob-

structed service access into the compressor compartment. Sug-

gested airflow clearances and service clearances are given in

Figure 5.

PLACING AND RIGGING

1. Before preparing the unit for lifting, check the outline drawing for

center of gravity for lifting safety. Because of placement of

internal components, the unit weight may be unevenly distrib-

uted. Approximate unit weights are given in outline drawing on

page 3.

NOTE: Accessory BA YLIFTOO2M Four (,4) lifting lugs are recom-

mended for rigging the unit for hoisting. See Figure 7 insert "B"

2. Insert the four lifting lugs in openings provided in drip lip on

perimeter of unit. See Figure 7 insert "B".

3. Before hoisting the unit, be sure that the proper method of rigging

is used, with straps or slings and spreader bars for protection

during lifting.

6. PLACING UNIT ON MOUNTING CURB--The unit is designed

with a perimeter drip lip that is lower than the unit base ban, see

Figure 7 insert "A".

7. Position the unit drip lip down over and in contact with the outside

corner of the curb, as illustrated in Figure 7 insert "A". Continue

to lower unit on top of curb, with the unit drip lip astraddle and in

contact with both the end and side rail of curb, the unit is now

resting on top of curb.

8. Take the two (2) hold down brackets shipped with curb and secure

unit to curb with hold down brackets as illustrated in Figure 8

insert "A".

Page 7

SPREADER BARS

OUTDOORCOIL

END OFUNIT

_)_ BAYLIFT002_A

DIMPLE LIFTING LUGS

GASKET SEAL'

NOTE: The inner perimeter of the Drip Lip on all

units should be flush with the outer perimeter

of the curb on the two sides shown here.

See Figure 2 for the location of the unit

overhang on the WCC048-060F Models with

BAYCURB030A/038A.

BASE OFUNIT

RESTONTOPOF

CURB RAILS

DRIP LIP ON

PERIMETER OF UNIT

CURB CORNER

Page 8

l;liA_lgl

FLANGE OF

CURB

EXISTING

SHEET METAL

I SCREW

HOLD-DOWN

BRACKET WITH

CURB

_u4/.eps

iNSTALLATiON

ROOFTOP -- UNITS

For roof top applications using a field fabricated frame and ducts, 4. Place the unit on the frame or roof curb. Refer to Figures 9 or

use the following procedure: 10.

1. The frame must be located and secured by bolting or welding to

the roof. Flashing is required.

2. The hole in the roof must be prepared in advance of installing the

unit.

5. Secure the unit to the frame or roof curb.

6. Insulate any ductwork outside of the structure with at least two (2)

inches of insulation and then weatherproof. There must be a

weatherproof seal where the duct enters the structure.

3. Secure the ducts to the roof. 7. Complete the installation according to the instructions in the

following sections of this manual.

®TYPICAL ROOFTOP APPLICATIONS WITH FRAME

lwccol8-060F)

RETURN AIR SUP 1 •

WEATHER-PROOF

DUCT

ROOF FLASHING

ANGLE IRON

/FRAME

TYPICAL ROOFTOP APPLICATION WITH FRAME

(WCC018-060F MODELS) /

DUCT

ROOF FLASHING

RETURN AIR

SUPPLY AIR

FRAME

FLASHING

Page 9

iNSTALLATiON

GROUND LEVEL -- HORIZONTAL UNITS

For ground level installations, the unit should be positioned on a pad

the size ofthe unit or larger. The unit must be level on the pad. The

pad must not come in contact with the structure (See Figure 11.) Be

sure the outdoor portion of the supply and return air ducts are as

short as possible.

2. Attach the supply and return air ducts to the unit.

3. Insulate any ductwork outside of the structure with at least 2

inches of insulation and weatherproof. There must be a weath-

erproof seal where the duct enters the structure.

Proceed with the installation as follows:

1. Place the unit on the pad and the five (5) rubber isolators

provided.

4. Complete the installation according to the instructions in the

following sections of this manual.

©TYPICAL GROUND LEVEL APPLICATION

(WCC018-060F MODELS)

SUPPLY AIR

RETURN AIR DUCT

DUCT

SIDING 1""_'I1_

OUTDOOR AIR

DISCHARGE

! '

EXTERIOR

WALL

OUTDOOR AIR

INTAKE

SUPPORT PAD

FOUNDATION

INSULATE

WEATHERPROOF FLEXIBLE DUCT ISOLATORS

OR RAIN SHIELD CONNECTORS (1 PER CORNER

AND1 UNDER

UNITCONTROLBOX) 2046,eps

DUCTWORK

ATTACHING DOWNFLOW DUCTWORKTO ROOF CURB ATTACHING HORIZONTAL DUCTWORK TO UNIT

Supply and return air flanges are provided on the roof curb for easy

duct installation. All ductwork must be run and attached to the curb

before the unit is set into place.

Follow these guidelines for ductwork construction:

Connections to the unit should be made with three-inch canvas

connectors 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 closer

than two feet from the unit, to minimize noise and resistance.

All conditioned air ductwork should be insulated to minimize heat-

ing and cooling duct losses. Use a minimum of two (2) inches of

insulation with a vapor barrier. The outside ductwork must be

weatherproofed between the unit and the building.

When attaching ductwork to a horizontal unit, provide a flexible

watertight connection to prevent noise transmission from the unit to

the ducts. The flexible connection must be indoors and made out

of heavy canvas.

NOTE: Do not draw the canvas taut between the solid ducts, i

Page 10

@DUCT ATTACHMENT METHODS

UNIT DUCT /I _'-_ THIS SEAM

FLANGE "_ " FIELD DUCT

AIR PROOF\

THIS SEAM

BASE

FIELD DUCTql X "_=======_

J.J "UNIT DUCT

FLANGE

AIR PROOF

3__ THIS SEAM

FIELDDucT_._ _ L_IT BASE

UNIT DUCT FLANGE

"FIELD DUCT

UNIT DUCT

FLANGE

PROOF

THIS SEAM UNIT DUCT

FLANGE

UNIT BASE

BASE NOT RECOMMENDED

FIELD DUCT FIELD DUCT

DOWNFLOW

SEAM

WITH BUTYL OR

SILICONE

'°R

UNIT DUCT

FLANGE FIELD DUCT

The following warning complies with State of California law, Proposition 65.

_:_WARNING: This product contains

HORIZONTAL fiberglass wool insulation! Fiberglass dust and ceramic

fibers are believed by the State of California to cause

cancer throug°Hfiff_ration. Glasswool fibers may also

cause respiratory, skin, or eye irritation.

CONDENSATE DRAIN PiPiNG

A 3/4-inch female NPT condensate drain connection is pro-

vided on the evaporator access panel end of the unit. See

Figure 4. Provide atrap and fill it with water before starting the

unit to avoid air from being drawn through. Follow local codes

and standard piping practices when running the drain line.

Pitch the line downward away from the unit. Avoid long

horizontal runs. See Figure 13.

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 drain system.

• Trapped.

• Must not be connected to closed drain system.

@TYPICAL CONDENSATE DRAIN PiPiNG

3/4"PVC OR COPPER

TUBING AND FITTINGS

1-1/2"MIN.

Page 11

FILTER iNSTALLATiON

TABLE 1

AIR FILTERS

Filters are to be used with the WCC018-060F heating/cooling

units. The basic unit does not havefilters init. However, afilter

frame accessory isoffered that will allow filters to be installed

within the unit.

Otherwise a filter rack must be installed by the installer in the

duct work.

NOMINAL FILTER* FILTER

UNIT CFM (Sq Ft) SIZE RESISTANCE

WCC018 600 2 0.06

WCC024F 800 2.67 0.06

WCC030F 1000 3.33 0.06

WCC036F 1200 4.00 0.06

WCC048F 1600 6.33 0.06

WCC060F 2000 6.67 0.06

Affix the filter label supplied with the unit adjacent to the filter

area. *Filters must be installed in the return air system. The above

square footages are based on 300 F.P.M. face velocity. If

permanent filters are used, size per mfg. recommendation

with clear resistance of 0.05"WC.

ELECTRICAL WIRING

ELECTRICAL CONNECTIONS

Electrical wiring and grounding must be installed in accordance with

local codes or, in the absence of local codes, with the National

Electrical Code ANSI/NFPA 70, Latest Revision.

ELECTRICAL POWER

It is important that proper electrical power be available for the unit.

Voltage variation should remain within the limits stamped on the unit

nameplate.

DISCONNECT SWITCH

Provide an approved weather-proof disconnect either on the side of

the unit or within close proximity and within sight of the unit.

OVER CURRENT PROTECTION

The branch circuit feeding the unit must be protected as shown on

the unit rating plate.

POWER WiRiNG

The power supply lines must be run in weathertight conduit to the

disconnect and into the bottom of the unit control box. Provide strain

relief for all conduit with suitable connectors.

Provide flexible conduit supports whenever vibration transmission

may cause a noise problem within the building structure.

Be sure all connections are made tight. See Figure 14.

NOTES: For branch circu# wiring (main power supply to unit

disconnect), wire size for the length of run should be determined

using the circu# ampacity found on the unit nameplate and the

N.E.C.

For more than 3 conductors in a raceway or cable, see the

N.E.C. for derating the ampacity of each conductor.

GROUNDING: THE UNIT MUST BE ELECTRICALLY GROUNDED

IN ACCORDANCE WITH LOCAL CODES OR THE NATIONAL

ELECTRIC CODE.

NOTE: Ground the unit internally as provided. See wiring

diagram for location.

CONTROL WiRiNG (CLASS ll)

Low voltage control wiring should not be run in conduit with power

wiring unless Class 1 wire of proper voltage rating is used. Route

the thermostat cable or equivalent single leads of No. 18 AWG

colored wire from the thermostat subbase terminals through the

rubber gromment on the unit. See Figure 5 for the control entry

location. Make connections as shown on the unit wiring diagram

and in Figure 14.

Do not short thermostat wires since this will damage the control

transformer.

Recommended wire sizes and lengths for installing the unit thermo-

stat are provided in Table 2. The total resistance of these low

voltage wires must not exceed one (1) ohm. Any resistance in

excess of 1 ohm may cause the control to malfunction because of

the excessive voltage drop

TABLE 2

THERMOSTAT WIRE SIZE AND MAXIMUM LENGTH

WIRE SIZE MAXIMUM LENTGH (Ft)

18 75

16 125

14 200

THERMOSTAT HEAT ANTiCiPATOR

The thermostat heat anticipators should be set to equal the amper-

age draw of the W1 thermostat circuit.

IMPORTANT: Upon completion of wiring check all electrical

connections, including factory wiring within the unit. Make sure

all connections are tight. Replace and secure all electrical box

covers and access doors before leaving the unit or turning on the

power to the unit.

Page 12

After all electrical wiring is complete, set the thermostat system

switch in the OFF position so that the compressor will not run

and then apply power by closing the system main disconnect switch.

This will activate the compressor sump heat. Do not change the

Thermostat System Switch until power has been applied long

enough to evaporate any liquid R-22 in the compressor. It is

recommended that the sump heater be energized for eight (8) hours

prior to starting.

@WCC-F FIELD WiRiNG DIAGRAM

ROWER

5 PI

POWER

UNIT

5Pt

POW R

HEATER

NOTE 1,6

PACKAGED qFAI RUM s UNI[

UN I (O IROI BOX

T •

I •

...........................................................................:++<+L>

/ _ 47AlSKl

U_ UN+T HALER AR ?

I I

1 I I

I I I

Pc AR I Z D I I I

PL UO

E CTRIC

H AT:R

CONTROL

BOX

B COMMON

G FAN

I i-x 44A(YI / I COMPR SSOR

I _ 41A(BR) Wll 1ST STAGE ELECTRC qEAT

...................................................................................... 41C(BR} W2 2N} SlAG El CIR C H A1

I _ 55A(RD} R 24 VO TS

I: UNIT LOW VOLTAGE AREA_

+IG. 1 SINGE POWER EN[RY

ACCF SSORY CONN/:C[ I ONS

UNIT CONTROL

80X

it:............

CONTACTOR

bN T LOW

VOLTAGE AREA

.,,,_ _ GROUND

WIRE

177 I I I

POWER

S NGLE POWER

ENTRY

FIG. 5

F}O.2 ECONOMIZER ACCESSORY

CONNECTIONS

TO ECONOMIZER

FACTORY PROV+DE© (NOT APPLICABLE TO THE WCM-F MODELS_

FIELD +NSTAILED

W_RES NOTE 9

III1_1

I1+1

I I I c_ f{_[_!_ .............................................................. sGB B+ +3

i I ............I

• 44 Y }

i I _

I • _SL +XA{BK_ C

1........................................!£ I!} /J\......................44A(Y )

/_ .....................41A(BR)

..................................... _!)!_)R! _L 40A(OR) 0

40E(OR)

NIT LOW .....

........ 5A(I_D) R

VO AG[ A_,+: A

hi+ q+l_qol:l_l

?YP CAI 2 STAC_

THERMOSTAT

Ok#DOOR +:RMOS AT

ACC:SSO::(Y CONN::C IONS

OU DO01:I

3H RMOSTA

ACCESSORY

BAYS :A :055A

NOTE 0

IYP CA I I[RMOSTA? TYP CA TII RMOS]AT

NOTES:

1 FUSED DISCONNECT SIZE, POWER WIRING AND

GROUNDING OF EQUIPMENT MUST COMPLY WITH

CODES

2 BE SURE POWER SUPPLY AGREES WITH

EQUIPMENT AND HEATER NAMEPLATE

3 LOW VOLTAGE WIRING TO BE 18 AWG MINIMUM

CONDUCTOR

4 SEE HEATER NAMEPLATE FOR CURRENT RATING

OF HEATER USED

5 SEE UNIT AND HEATER DIAGRAM FOR

ELECTRICAL CONNECTION DETAILS

6 IF ELECTRIC HEATER ACCESSORY IS NOT

INSTALLED OMIT THE ELECTRIC HEATER,

ASSOCIATED POWER WIRES AND THE 'W' AND

'X2' THERMOSTAT WIRES

7 FIG, 3 DEMONSTRATES CONNECTION OF THE

OUTDOOR THERMOSTAT ACCESSORY ONLY FOR

FURTHER UNIT CONNECTION DETAILS REFER TO

THE OTHER FIGURES

8 THE 41A(BR) WIRE IS FIRST STAGE ELECTRIC

HEAT, IF THE ELECTRIC HEATER ACCESSORY

HAS TWO HEATING STAGES THE 41C(BR) WIRE IS

SECOND STAGE ELECTRIC HEAT

9 WHEN THE BAYECON054A OR 055A

ECONOMIZER IS INSTALLED THE BAYRLAY003

RELAY ACCESSORY KIT IS REQUIRED TO

INTERFACE THE ECONOMIZER TO THE HEAT

PUMP FOR PROPER SYSTEM OPERATION WHEN

THE BAYECON054B OR 055B OR 073A

ECONOMIZER IS INSTALLED, THE BAYRLAY004A

RELAY ACCESSORY KIT IS REQUIRED TO

INTERFACE THE ECONOMIZER TO THE HEAT

PUMP FOR PROPER SYSTEM OPERATION

10 THE BAYSTAT033A OUTDOOR THERMOSTAT

ACCESSORY KIT CONTAINS A THERMOSTAT AND

A RELAY, THE RELAY IS NOT REQUIRED TO BE

USED IN THIS APPLICATION

INTER COMPONENI W}RINO

......................... 24V _ FACTORY

L}NE V.J WIR+NO

.......................................................................24V _ FIEID

LiNE V _ WIR+NO

WIRE COLOR DESIGNATION

ABBRICOLOR ABBR COLOR

BK }B}ACK PR RURP}E

} Bt }8tLJEI RD REID

BR IBROWN WH WHITE

OR IGREEN YL YELLOW

OR IORANCE

From Dwg. 756978 Rev. 5

Page 13

START-. UP

PRE-START QUICK CHECKLIST

•Is the unit properly located and level with the proper clearance?

See Figure 5.

• Is the duct work correctly sized, run, taped, insulated, and

weatherproofed with proper unit arrangement. See Ductwork

Installation section.

• Is the condensate line properly sized, run, trapped, and pitched?

• Is the filter of the correct size and number? Is it clean and in place?

• Is the wiring properly sized and run according to the unit wiring

diagram?

• Are all the wiring connections, including those in the unit, tight?

• Has the unit been properly grounded and fused with the recom-

mended fuse size? See Wiring Data.

• Is the thermostat level, correctly wired, well located, and set for the

proper heat anticipation?

• Have the air conditioning systems been checked at the service

ports for charge and leak tested if necessary?

To start the unit in the cooling mode, set the thermostat system

switch to COOL and move the thermostat COOL indicator to a

setting below room temperature. The condenser (outdoor) fan

motor compressor and evaporator (indoor) fan motor will operate

automatically.

OPERATING PRESSURES

After the unit has operated in the cooling mode for a short period of

time, install pressure gauges on the gauge ports of the discharge

and suction line valves. Check the suction and discharge pressures

and compare them to the normal operating pressures provided in

the unit's SERVICE FACTS.

NOTE: Do not use the pressures from the unit's SERVICE FACTS

to determine the unit refrigerant charge. The correct charge is

shown on the unit nameplate. To charge the system accurately,

weigh in tlhe charge according to the unit nameplate.

VO LTAG E

With the compressor operating, check the line voltage at the unit.

The voltage should be within the range shown on the unit name-

plate. If Iowvoltage is encountered, check the size and length of the

supply line from the main disconnect to the unit. The line may be

undersized for the length of the run.

•Do the condenser fan and indoor blower turn free without rubbing,

and are they tight on the shafts?

•Has the indoor blower speed been determined and the proper

speed been set? See the Unit Wiring Diagram.

• Has all work been done in accordance with applicable local and

national codes?

• Are all covers and access panels in place to prevent air loss and

safety hazards?

STARTING THE UNIT iN THE COOLING MODE

CAUTION: Before startingthe system on the cooling cycle, turn the

thermostat switch to OFF and close the unit disconnect switch. This

procedure energizes the compressor crankcase heater, vaporizing

any liquid refrigerant in the crankcase. This is a precaution against

foaming at startup which could damage the compressor bearings.

Allow the heater to operate a minimum of eight (8) hours.

NOTE: See the section on "Sequence of Operation" for a descrip-

tion of the cooling operating sequence.

COOLING SHUT DOWN

Place the system selector in the OFF position or reset thermostat at

a setting above room temperature.

Do not de-energize the main power disconnect except when unit it

to be serviced. Power is required to keep the heat pump compres-

sor warm and boil off refrigerant in the compressor.

STARTING THE UNIT iN THE HEATING MODE

NOTE: See the section on "Sequence of Operation" for a descrip-

tion of the heat pump heating operating sequence.

Check to make sure all grilles an registers are open an all unit

access doors are closed before start-up.

Slowly set the thermostat above tom temperature until achieving a

first stage call for heat and place the fan switch in the AUTO or ON

position.

HEATING SHUT-DOWN

Place the system selector switch at OFF or place the heating

selector lever at a setting below room temperature.

WARNING: DONOTOPERATETHEUNIT

WITHOUT THE EVAPORATOR FAN ACCESS PANEL IN

PLACE. REINSTALL THE ACCESS PANEL AFTER

PERFORMING ANY MAINTENANCE PROCEDURES ON THE

FAN. OPERATING THE UNIT WITHOUT THE ACCESS

PANEL PROPERLY INSTALLED MAY RESULT IN SEVERE

PERSONAL INJURY OR DEATH.

Page 14

SEQUENCE OF OPERATION

Heat Pump -- General

Operation of the unit heating and cooling cycles is automatic when

the system is in the HEAT or COOL functions. (The optional

automatic changeover thermostat, when in the AUTO position,

automatically changes to heat or cool with an appropriate room

temperature change.) The fan switch can be placed in the ON

position, causing continuous indoor fan operation. The fan switch

may also be placed in the AUTO position causing fan operation to

coincide with heating or cooling run cycles.

Cooling Mode

With the disconnect in the ON position, current is supplied to the

sump heater and control transformer. The sump heater supplies

heat to the compressor to prevent liquid refrigerant from accumulat-

ing in the compressor during the off cycle.

The thermostat temperature switch (TSC-1) closes completing the

24 volt circuit from terminal "R" to terminal "O" energizing the

switchover valve solenoid coil (SC). (Nothing else occurs.)

Second Stage Cooling (after a 0.7°Fto 1.5°F temperature rise): The

thermostat temperature switch (TSC=2) closes completing the 24

volt circuit from terminal "R" to terminal "Y" energizing the compres-

sor contactor (MS) and to terminal "G" to energize the fan relay (F).

The MS-1 and MS-2 contacts close simultaneously energizing the

compressor,and outdoor fan motor. The F=I contact closes and

energizes the indoor fan motor. When the (TSC=2) switch closes, the

cooling anticipator is bypassed.

Heating Mode

The thermostat heating switch (TSH=I) closes completing the 24 volt

circuit from terminal "R" to terminal "Y" energizing the compressor

contactor and to terminal "G" to energize the fan relay (F). When

(TSH-1) closes, the heat anticipator (HA)is energized. (The heat

anticipator provides heat to the thermostat bimetal during operation

of the heat pump or resistance heat cycle. The switchover valve (SO)

is not energized due to the voltage drop across the heat anticipator.)

The MS-1 and MS=2 contacts close simultaneously and energize the

compressor,and the outdoor fan motor. At the same time, the F=I

contacts close and energize the indoor fan motor and the F=2

contacts provide a fan interlock for the heater control circuit

Second Stage Heating (after a 0.7°F to 1.5° F temperature drop):

The thermostat heating switch TSH-2 closes and completes a 24 volt

circuit from terminal "R" to terminals "W" and "U" which are bussed

together and thereby energizes the blue light on the thermostat.

Emergency Heat

Positioning the emergency resistance heat switch (RHS) in the

thermostat to the ON position will de-energize the refrigerant system

and the supplementary heat will come on through the second stage

heating contact (TSH-2) of the thermostat. Prior to this, the first

stage heating contact (TSH-1) would have closed the circuit to the

indoor blower, which will continue to run through the emergency heat

cycle and will stop when TSH-1 is satisfied and opens. A red light

indicator is visible when the switch is set to emergency heat.

Electronic Time and Temperature Defrost

Defrost Cycle

The electronic defrost board is a combination time/temperature

device. It is designed to control the removal of frost and ice from the

outdoor coil of a heat pump when coil temperatures are low.

Defrosting of the coil is initiated at a pre-selected time interval,

provided the outdoor coil is below the preset initiation temperature.

One of three time intervals (50, 70, or 90 minutes) may be chosen,

allowing the installer to adjust the time for his particular climate. In

humid and northern climates, for example, the time interval may

need to be shorter than in dry climates.

The electronic defrost board terminates the defrosting cycle when

the outdoor coil temperature rises to the preset termination tem-

perature or after a preset defrost time has passed, regardless of

windvelocity. This helps ensurethatthe heat pump stays in defrost

only as long as is necessary to remove the frost and ice from the

outdoor coil.

OPERATION: Power to the defrost board (DFC) is provided when

the temperature sensing switch (DT) on the outdoor coil is closed.

Defrost time interval is accumulated with starts and stops of the wall

thermostat's call for heating. At the end of the chosen time interval,

assuming the temperature sensing switch is closed, a defrost cycle

starts. When the defrost cycle starts, the contacts on the defrost

board close thereby energizing the switchover valve relay (SOV)

and the electric heater contactor. A normally closed contact on the

defrost board opens the circuit to the outdoor fan motor (ODM).

The defrost cycle is terminated when the temperature sensing

switch opens or the 10 minute override interrupts the defrost period.

On termination of the defrost cycle, the timing period is reset.

Defrost Control Board

SELECTIONS

TEST FEATURE: The test feature is provided for use by the

installer or serviceman to verify that the electronic defrost board is

operating properly. To initiate a defrost cycle, the two TST pins are

shorted together until the cycle has been initiated. All timing

functions are shortened to 11.7, 16.4, or 20.3 seconds for the 50, 70,

and 90 minute time interval settings, respectively. After defrost

initiation, the short across the two TST pins MUST BE REMOVED

IMMEDIATELY, or the defrost period will last only 2.3 seconds.

Defrost is terminated as described in the OPERATION section.

Page15

FINAL iNSTALLATiON CHECKLIST

• Does the unit run and operate as described in the section on

"Sequence of Operation" in response to the room thermostat?

• Are the condenser fan and indoor flower operating correctly with

proper rotation and without undue noise?

• Is the compressor operating correctly and has the system been

checked 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 air

discharge grilles adjusted to balance the system?

• Has the ductwork been checked for air leaks and condensation?

• Has the furnace manifold pressure been checked and adjusted 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 or maintenance personnel been given this manual

and the warranty? Has the owner or maintenance been instructed

on proper operation and maintenance of this unit?

Page 16

CHECKOUT PROCEDURE

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Page 17

MAINTENANCE

ROUTINE MAINTENANCE BY OWNER

You can do some of the periodic maintenance functions for

your WCC-F unit yourself; this includes replacing the dispos-

able or cleaning the permanent air filters, cleaning the unit

cabinet, clearing the condenser coil, and conducting a general

unit inspection on a regular basis.

Be su re to inspect them at least once each month when the

system is in constant operation. (In new homes, check the

filters every week for the first four (4) weeks.)

MAINTENANCE PERFORMED BY SERVICEMAN==

HEATING SEASON

Complete the unit inspections and service routines described

below at the beginning of each heating season.

• Visually inspect the unit to ensure that the airflow required for

condenser coil is not obstructed from the unit.

• Inspect the control panel wiring to verify that all electrical

connections are tight and that the wire insulation is intact.

If you have disposable-type filters, replace them with new

filters of the same type and size. Do not attempt to clean

disposable filters.

Permanent-type filters can be cleaned by washing them with a

mild detergent and water. Make sure that the filters are

thoroughly dry before re-installing them in the unit (or duct

system).

NOTE: It may be necessary to replace permanent filters

annually if washing fails to clean the filter or if the filter shows

signs of deterioration. Be sure to use the same type and size

as was originally installed.

CONDENSER COIL

Unfiltered air circulates through the unit's condenser coil and

can cause the coil's surface to become clogged with dust, dirt,

etc. To clean the coil, vertically (i.e., with the fins) stroke the

coil surface with a soft-bristled brush.

Be sure to keep all vegetation away from the condenser coil

area.

MAINTENANCE PERFORMED BY SERVICEMAN==

COOLING SEASON

To keep your unit operating safely and efficiently, the manufac-

turer recommends that a qualified serviceman checkthe entire

system at least once each year and any other time that you feel

one is needed. Your serviceman should examine these areas

of your WCC-F unit:

• filters (for cleaning or replacement)

• motors and drive system components

• gaskets (for possible replacement)

• safety controls (for mechanical cleaning)

• electrical components and wiring (for possible replacement and

connection tightness)

• condensate drain (for cleaning)

• unit duct connections (to see that they are physically sound and

sealed to the unit casing)

• unit mounting support (for structural integrity)

WARNING: TO PREVENT INJURY OR DEATH

DUE TO ELECTRICAL SHOCK OR CONTACT WITH MOVING

PARTS. LOCK UNIT DISCONNECT SWITCH IN OPEN

POSITION BEFORE SERVICING UNIT.

WARNING: TO PREVENT AN EXPLOSION I

OR POSSIBLE INJURY, DEATH AND EQUIPMENT DAMAGE, I

DO NOT STORE COMBUSTIBLE MATERIALS, GASOLINE I

OR OTHER FLAMMABLE VAPORS OR LIQUIDS NEAR THE I

UNIT. J

The following warning complies with State of California law, Proposition 65.

WARNING: This product contains

fiberglass wool insulation! Fiberglass dust and ceramic

fibers are believed by the State of California to cause

cancer through inhalation. Glasswool fibers may also

cause respiratory, skin, or eye irritation.

PRECAUTIONARY MEASURES

•Avoid breathing fiberglass dust.

• Use a NIOSH approved dust/mist respirator.

• Avoid contact with the skin or eyes. Wear long-

sleeved, loose-fitting clothing, gloves, and eye

protection.

• Wash clothes separately from other clothing: rinse

washer thoroughly.

Operations such as sawing, blowing, tear-out, and

spraying may generate fiber concentrations requiring

additional respiratory protection. Use the appropriate

NIOSH approved respirator in these situations.

FIRST AID MEASURES

Eye Contact - Flush eyes with water to remove dust.

If symptoms persist, seek medical

attention.

Skin Contact Wash affected areas gently with soap

and warm water after handling.

A150988P01

• the unit (for obvious unit deterioration)

Page 18

Limited Warranty

Heat Pump

WCC, WCD, WCH,

Models Less Than 20 Tons for ResidentiaJ Use*

This limited warranty is extended by American Standard 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 service

labor, diagnosis calls, refrigerant and related items are not included.

If the sealed motor-compressor fails because of a manufacturing defect within five years from the date of original

purchase, Warrantor will furnish without charge the required replacement compressor. Any local transportation, related

service labor, diagnosis calls, refrigerant and related items are not included.

This limited warranty does not cover failure of your Heat Pump if it is damaged while in your possession, failure

attributable or caused by unreasonable use of the Heat Pump and/or failure to properly maintain the Heat Pump as set

forth in the Use and Care manual.

This limited warranty applies to product installed on or after 10/1/2001 where product is manufactured after 1/1/2000.

This limited warranty is not retroactive to any installations prior to 10/1/2001 or on product produced prior to 2000.

THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER

WARRANTIES 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 limited 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

limited warranty gives you specific JegaJ 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:

American Standard Inc.

Troup Highway

Tyler, TX 75711-9010

Attention: Manager, After Sales Support

GW-611-4001

* 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.

Page19

LiMiTED WARRANTY

HiGH EFFiCiENCY HEAT PUMP

WCZ, WCY, WCX, WCC, WCD, WCH, WCM and WSC

Models Less Than 20 Tons for Commercial Use*

(Parts Only)

This warranty is extended by American Standard 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. 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 warehouse 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 WARRANTIES 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.

American Standard Inc.

Troup Highway

Tyler, TX 75711-9010

Attention: Manager, After Sales Support

GW-604-4800

* 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.

Since American-Standard has a policy of continuous product and

product data improvement, it reserves the right to change design and

specification without notice.

American-Standard Inc.

6200 Troup Highway

Tyler,TX 75703 0( )0sTechnical Literature - Printed in U.S.A.

Page 20

TRANE Package Units(both Units Combined) Manual L0905292

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