TRANE Package Units(both Units Combined) Manual L0905299

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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WCX-IOM-1D
18-BB33D7-5

I
TALLATIO
OPERATION
INT
CE
ALL phases of this installation must comply with
NATIONAL, STATE AND LOCAL CODES

WCX048G1,3,4
WCX060G1,3,4

Single Package Heat Pump
12 SEER Convertible

BAYLIFT002AA
LIFTING LUG KIT

Model:
WCX024G1
WCX030GI
WCX036G 1,3,4
WCX042G 1,3

IMPORTANT--This

Document

is customer

propertyand

" 5

TOn

is to remain with this unit. Please return to service information

pack upon completion

of work.

NOTICE
Warnings and Cautions appear at appropriate locations throughout this manual.
Read these carefully.
_WARNING:

Indicates a potentially

ardous situation which, if not avoided,
SAVINGTHEEARTH. SAVINGYOURMONEY.

Since The Trane Companyhas a policy of continuous product and product data
improvement, it reserves the right to change design and specification without notice.

could

result in death or serious injury.
,_CAUTION"

All phases d this installation must comply with the NATIONAL,
STATE & LOCAL CODES, In the absence of local codes, the
installation must conform with National Electric Code -- ANSI/
NFPA 70 or "LATEST REVISION."

haz-

Indicates a potentially

ardous situation which, if not avoided,

hazmay

result in minor or moderate injury. It may also
be used to alert against unsafe practices
and where property=damage=only
accidents
could occur.
o7/o2

GENERAL
IMPORTANT: Read this entire manual before beginning
lation procedures.

INFORMATION

instal-

SAFETY NOTICE• THIS INFORMATION IS INTENDED FOR
USE BY INDIVIDUALS POSSESSING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDITIONING PRODUCT MAY RESULT IN PERSONAL INJURY
AND/OR PROPERTY DAMAGE. THE MANUFACTURER OR
SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION, NOR CAN IT ASSUME
LIABILITY IN CONNECTION WITH ITS USE•

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 liability for
installations or servicing performed by unqualified 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:
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 TO THIER ORIGINAL 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

TYPICAL

ROOFTOP

INSTALLATION
(WCX024=060G

IMPORTANT:
The( to
useprevent
of"spreader
bars"
is required
when
hoisting
the unit
damage
to sides
and top
).

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.

WITH FULL PERIMETER

CURBS

Models)

FIELD SUPPLIED
SUPPORTS
AT EACH END
OF CURB

FIELD SUPPLIED
CANT STRIP
ROOF
FIELD SUPPLIED
RIGIDINBULATION
ROOF

SUPPLY AIR
DUCT

Page 2

i
|

RETURN AIR
DUCT

MOUNTING
CURB

TYPICAL

ROOFTOP

SEE NOTE

iNSTALLATiON
(WCX024-060G

WiTH BAYCURB030A,038A
IVlodels)

SEE NOTE2

FIELD SUPPLIED
SUPPORTS
ATEACH
END
OFCURB
ROOFING
._ROOFINSULATION
FIELD SUPPLIED
CANTSTRIP
ROOF
FIELD SUPPLIED

NOTE 1: The WCX036-042

Models extend out

ROOF

past this end of the curb only.

)
SUPPLY AIR
DUCT

NOTE 2: Only the WCX048, 060G Models
extend past both the end and the
side of the curb as illustrated

CONVERTING

HORIZONTAL

MOUNTING
CURB

RETURN AiR
DUCT

TO DOWNFLOW

NOTE
SUPPLY

SHEET METAL
SCREWS
HORIZONTAL SUPPLY
AIR COVER

HORIZONTAL RETURN
AIR COVER

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

W_X024-060G

DATA

OUTLINE

_r_

= BACK

EVAPORA[OR

CO I L &

_owER
_ANE_

SUPPLY

\\
1

.........
APP/ ARANC_

[! .52}

_r_

(}ROSS S]CIION

CORNER WEIGHT
W1
W2
W3

RETURN PER METER FLANGES

(LBS)
W4

UNIT
WEIGHT

WCX024G

104

331

WCX030G

110

342

WCX036G

110

118

398

WCX042G

110

118

398

WCX048G

149

104

117

134

504

WCX060G

149

104

117

134

504

56-1/2

29-3/16

18-9/16

11-1/16

6-9/16

6-13/16

Page 4

"_'_'-.'.,,,. /

.....................................................
.......
I

YPICA[

MODEL

< <_-

65-1/4

29-1/16

33-3/8

18-9/16

21-1/16

11-1/16

15-1/16

6-9/16

4-15/16

11-1/8

9-1/8

25-3/8

24-3/8

19-1/4

27-1/2

19-1/4

27-1/2

24-1/4

28-1/2

24-1/4

28-1/2

21-15/1_

17-1/2

4-7/16

17-1/2

8-3/4

3-1/2

8-5/16

DiMENSiONAL
WCX024=060G

CONTRO.
ACC SS

DATA

OUTLINE

= FRONT

BOX
_AN£L

_C©NDENSER
&

ELECTRIC
ACCESS

COIL

GUARD

HEAIER
PANEL

D66Y982

RECOMMENDED

CLEARANCE TO
COMBUSTIBLE MATERIAL
BOTTOM
0.0"

SERVICE CLEARANCE

BACK

* 6.0"

LEFT SIDE

30.0"

BACK

1.0"

RIGHT SIDE

24.0"

LEFT SIDE

6.0"

FRONT SIDE

30.0"

RIGHT SIDE

6.0"

18" WITH FRESHAIR ACCESSORY
30" WITH ECONOMIZER

FRONT SIDE

12.0"

TOP

36.0"

MODEL

WCX024G
WCX030G

56-1/2

29-3/16

WCX036G
WCX042G

29-3/16

WCX048G
WCX060G

65-1/8

33-3/8

Page 5

REQUIRED CLEARANCE
FOR UNiT iNSTALLATiON
AND ROOF PENETRATION
HOLE SiZE REQUIRED

SERVOE SERVOE

woo

SIDE RAIL /

' "//._

MODEL NO.

E
E

_
I

SERVICE CLEARANCE & PENETRATION DIMENSIONS
WCX024-30G
42"
30" "12" 24"
36"
25"
WCX036-04G
42"
30" "12" 30"
44"
25"
WCX048-06G
42"
30" "12" 36"
50"
25"

HOLE IN ROOF
__

J_
_
_

_i_

* 18" WITH FRESH AIR ACCESSORY
* 30" WITH ECONOMIZER

LOCATIONS AND RECOMMENDATIONS
These units are designed for outdoor installation. For proper installation, the following recommendations must be considered.
NOTE: Unit shipped for horizontal
downflow per instruction.

installation.

Convert

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
BAYCU RB033A, BAYCU RB034A) 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
A MINIMUM OF 12" OFF THE ROOF, DECK OR SLAB--the chance
of the coil being blocked with snow wilt 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 WCY--F models is approximately
14" high. This is normally sufficient height to prevent snow blockage
and additional clearance is not necessary.

Page 6

AVOID LOCATING THE UNIT WHERE SNOW TENDS 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 unit to prevent restriction of airflow to
and from unit.
LOCATE THE UNIT SO THAT THE WATER VAPOR THAT DISCHARGES UPWARD DURING DEFROST DOES NOT CONDENSE
ON WINDOWS AND 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.

3. For"RoofTop 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 PERSONAL 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 weatherproofed in accordance with local codes.
9. Roof flashing must be installed to seal the roof curb cavity and
must conform to local building codes.

11. Access and service clearances for the unit must be given careful
consideration when locating the duct entrance openings. Figures 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 surrounding
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 place them
over the horizontal supply and return air openings (painted
side out) and secure with sheet metal screws.

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

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 specification sheet.

LOCATION

AND CLEARANCES

Installation of the unit should conform to local building codes or, in
the absence of local codes, to the ANSI/N FPA No. 70-1987 National
Electrical Code or "Latest Revision." Canadian installations must
conform to CSA and local codes.
Select a location that will permit unobstructed airflow into the
condenser coil and away from the fan discharge and permit unobstructed service access into the compressor compartment. Suggested airflow clearances and service clearances are given in
Figure 5.

PLACING

IMPORTANT!:
DO NOT LIFT THE UNIT WITHOUT TESTLIFTING 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 HARDWARE, ANGLES, TABS OR FLANGES. FAILURE TO OB=
SERVE THESE WARNINGS MAY RESULT IN EQUIPMENT
DAMAGE.

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 distributed. Approximate unit weights are given in outline drawing on
page 3.

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 hoisting
MPORTANT!:
unit.

2. Insert the four lifting tugs 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.

Bars"

must

used

when

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. rubber seals affixed to mounting curb.
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,

NOTE. Accessory BA YLIFTOO2M Four (A) lifting lugs are recommended for rigging the unit for hoisting. See Figure 7 insert "B".

"Spreader

Position the unit drip tip 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 tip 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

OUTDOORCOIL
END OFUNIT

BASE OF UNIT
REST ON TOP OF
CURB RAILS

DRIP LIP ON
PERIMETER
OF UNIT

I
P_

BAYLIFT002A

DIMPLE

LIFTING

LUGS

CURB CORNER

J
GASKET

NOTE:

The inner perimeter of the Drip Lip
units should be flush with the outer
of the curb on the two sides shown
Figure 2 for the location of the unit
on the WCX036-060G
Models with
BAYCU RB030A,038A.

SEAL'

on all
perimeter
here. See
overhang

EXISTING
SHEET METAL
I

SCREW

HOLD-DOWN
WITH
CURB

FLANGE OF
CURB

Page 8

iNSTALLATiON
ROOFTOP

==UNITS

For roof top applications using a field fabricated frame and ducts,
use the following procedure:

4. Place the unit on the frame or roof curb.
10.

1. The frame must be located and secured by bolting or welding to
the roof. Flashing is required.

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

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

TYPICAL ROOFTOP APPLICATIONS
RETURN

AIR

SUP

9 or

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.
7. Complete the installation according
following sections of this manual.

3. Secure the ducts to the roof.

Refer to Figures

to the instructions

in the

WITH FRAME

lwcxo24-O6OG)

,.
_

•

WEATHER-PROOF
DUCT

ROOF

FLASHING

ANGLEIRON
FRAME

TYPICAL

ROOFTOP

APPLICATION

(WCX024=060G

WITH FRAME

MODELS)

ROOF

DUCT

SUPPLY
ROOF

FLASHING

AIR

FLASHING
RETURN

AIR
FRAME

Page 9

iNSTALLATiON
GROUND

LEVEL ==HORIZONTAL

UNITS

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

Proceed with the installation as follows:

4. Complete the installation according
following sections of this manual•

1. Place the unit on the pad and the
provided•

Insulate any ductwork outside of the structure with at least 2
inches of insulation and weatherproof• There must be a weatherproof seal where the duct enters the structure•
to the instructions

in the

five (5) rubber isolators

TYPICAL GROUND LEVEL APPLICATION
(WCX024-060G MODELS)

OUTDOOR
AIR
DISCHARGE

'l
RETURN

AIR

SUPPLY
AIR
DUCT

DUCT
SIDING

I_P"
OUTDOOR
INTAKE

AIR

SUPPORT
PAD
FOUNDATION
EXTERIOR
WALL

INSULATE
WEATHERPROOF
OR RAIN SHIELD

FLEXIBLE
DUCT
CONNECTORS

ISOLATORS
(1 PER CORNER
AND 1 UNDER
UNIT CONTROL
BOX)

2046eps

DUCTWORK
ATTACHING

DOWNFLOW

DUCTWORKTO

ROOF CURB

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•

ATTACHING

HORIZONTAL

DUCTWORK

TO UNiT

All conditioned
ing and cooling
insulation with
weatherproofed

air ductwork should be insulated to minimize heatduct losses• Use a minimum of two (2) inches of
a vapor barrier• The outside ductwork must be
between the unit and the building•

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 minimize 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•

Page 10

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. }

DUCT

ATTACHMENT

METHODS

AIR PROOF \
THIS SEAM

AIR PROOF

_THIS

SEAM

BASE
FIELD

DUCT,ql

X
U

FLANGE

FIELD DUCT

FIELDDUCT
4L
'UNIT DUCT
FLANGE

_TBASE
Lt

UNIT DUCT

FLANGE

UNIT BASE
/

AIR PROOF
UNIT DUCT
FLANGE

UNITFLANGEDUCT_

UNIT
" FIELD

BASE

NOT RECOMMENDED

DUCT

WITH BUTYL
SILICONE

FIELD DUCT

DOWNFLOW

The following

UNIT DUCT
FLANGE

I_,.

warning

complies

with State of California

AWARNING:

THIS SEAM
FIELD DUCT

law, Proposition

65.

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.

HORIZONTAL

CONDENSATE
A 3/4-inch female NPT condensate drain connection is provided on the evaporator access panel end of the unit. See
Figure 4. Provide a trap 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.

DRAIN PiPiNG
TYPICAL

CONDENSATE

DRAIN

PiPiNG

3/4" PVC OR COPPER
TUBING AND F

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,

1-1/2" MIN.

• Trapped.
•

Must not be connected to closed drain system.

Page 11

FILTER INSTALLATION
TABLE

Filters are to be used with the WCX024-060G heating/cooling
units. The basic unit does not have filters in it. However, a filter
frame accessory is offered that will allow filters to be installed
within the unit.

WCX024G

NOMINAL
CFM
800

WCX030G

1000

3.33

0.05

WCX036G

1200

4.00

0.05

WCX042G

1400

4.67

0.05

Otherwise a filter rack must be installed by the installer in the
duct work.

WCX048G

1600

5.33

0.05

WCX060G

2000

6.67

0.05

AiR FILTERS

UNIT

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

ELECTRICAL

CONNECTIONS
and grounding must be installed in accordance with
in the absence of local codes, with the National
ANSI/NFPA 70, Latest Revision.
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

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

CONTROL
WIRING (CLASS II)
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.

TABLE

Provide flexible conduit supports whenever vibration transmission
may cause a noise problem within the building structure.
Be sure all connections

wires since this will damage the control

Recommended wire sizes and lengths for installing the unit thermostat are provided in Table 2. The total resistance d 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

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.

THERMOSTAT

WIRE SIZE AND MAXIMUM LENGTH

WIRE SIZE
18
16
14

MAXIMUM LENTGH (Ft)
75
125
200

are made tight. See Figure 14.

NOTES: For branch circuit wiring (main power supply to unit
disconnect), wire size for the length of run should be determined
using the circuit 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
diagram for location.
Page 12

WIRING

Do not short thermostat
transformer.

SWITCH

FILTER
RESISTANCE
0.05

*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
ELECTRICAL
Electrical wiring
local codes or,
Electrical Code

FILTER*
(Sq Ft) SIZE
2.67

internally

as provided. See wiring

THERMOSTAT

HEAT ANTICIPATOR

The thermostat heat anticipators should be set to equal the amperage draw of the Wl thermostat circuit.

IMPORTANT:
Upon completion of wiring check all electrical
connections, including factorywiringwithinthe
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.

Afterallelectrical
wiringiscomplete,
setthethermostat
system

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.

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

WCX=G FIELD WIRING
P/,,CKA(

)

ii#'
]

PUvIP

T CO TRCI

DIAGRAM

UQX

I
I

Io
e

I
i

..........................................................................
_L
,

56B(BL)

[

':OM_,< '\
/,N

(}O'qF>FR
i SSOR
1S]
I'

C(BR)

S /,©E

[li(IR

(1 II A

'A2

DEFROST ¢ONTRO_
j

UN T

i{
v
pl
_OwE n

O_ '/OI T/,GE

0:,

S_GN_i

VOt TS

#RE,",

..........
NOTES:

ai,}E

c,4:R

;/,[

1 FUSED DISCONNECT
SIZE, POWER WIRING
AND
GROUNDING
OF EQUIPMENT
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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.

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

• Is the condensate line properly sized, run, trapped, and pitched?
• Isthe 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 recommended fuse size? See Wiring Data.

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 unff's SERVICE FACTS
to determh_e 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

• Isthe thermostat level, correctly wired, welt 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?
• 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 starting the 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 description of the cooling operating sequence.

WARNING:

DO NOT OPERATE THE UNIT
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

With the compressor operating, check the line voltage at the unit.
The voltage should be within the range shown on the unit nameplate. If low voltage 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.
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 compressor 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 description 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 rom 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.

SEQUENCE

OF OPERATION

GENERAL
Operation of the unit heating and cooling cycles is automatic for
HEAT and COOL functions. (The optional automatic changeover
thermostat, when in the AUTO position, automatically changes to
heat or cool with sufficient room temperature change.) The fan
switch can be placed in either the ON position, causing continuous
evaporator (indoor) fan operation, or the AUTO position causing fan
operation to coincide with heating or cooling run cycles.
COOLING MODE
(NOTE: TSH & TSC are contacts internal to the indoor thermostat.)
With the disconnect switch in the ON position, current is supplied to
the compressor crankcase heater and control transformer. (The
outdoor fan relay (ODF) relay is energized through normally closed
contacts on the defrost timer control (DFC) on the 460V and 600V
units only.) The cooling cycle is enabled through the low voltage
side of the control transformer to the "R" terminal on the indoor
thermostat. With the system switch in the AUTO position and TSC1 contacts closed, power is supplied to the "O" terminal on the
indoor thermostat to the switchover valve coil (SOV). This energizes
the switch-over valve (SOV) and places it in the cooling position (it
is in the heating position when de-energized).
When the indoor temperature rises 1-1/2 degrees, TSC-2 contacts
close, supplying power to the "Y" terminal on the indoor thermostat,
and to the compressor contactor (CC). This starts the outdoor fan
motor and compressor. The TSC-2 contacts also provide power to
the "G" terminal which provides power to the fan relay (F) starting
the indoor fan motor.
HEATING MODE
With the disconnect switch in the "ON" position, current is supplied
to the compressor crankcase heater and control transformer. (The
outdoor fan relay (ODF) is energized through normally closed
contacts on the defrost timer control (DFC) on the 460V and 600V
units.) Starting at the "R" terminal on the indoor thermostat, current
goes through the system switch (which is in "AUTO" position) to the
TSH=I contacts. When closed, these contacts supply power to
terminal "Y" on the indoor thermostat as well as to the heating
anticipator. The switch-over valve will not energize because of the
high resistance of the heating anticipator in the thermostat. Power
is provided from "Y" to the compressor contactor (CC) which starts
the compressor and outdoor fan motor. The indoor thermostat
contact TSH=I also provides power to "G" terminal on the indoor
thermostat energizing the fan relay (F), which starts the indoor fan
motor.

thermostat. When placed in the emergency heat position, it will
disable the compressor, bypass the outdoor thermostats, if provided, and engage the supplementary electric heaters and indoor
fan.
DEMAND DEFROST OPERATION
During the heating cycle, the outdoor coil may require a defrost
cycle 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 calculates the difference or detta-T measurement. When the calculated
detta-T is met, the demand defrost control (DFC) opens the circuit
to the outdoor fan motor (ODM) and energizes the switch-over valve
(SOV), placing the unit in the cooling mode to defrost the outdoor
coil. The outdoor coil temperature sensor (CBS) terminates the
defrost cycle, or times off after twelve minutes in defrost, the (DFC)
energizes the outdoor fan motor (ODM) and twelve seconds later
de-energizes the (SOV), which returns the unit to the heating mode.
Supplementary electric heat, if provided, is brought on to control
indoor temperature during the defrost cycle.
ICM FAN MOTOR ADJUSTMENTS (WCX060G ONLY)
If the airflow needs to be increased or decreased, see the Airflow
Table in the Service Facts. Information on changing the speed of the
blower motor for the WCY060F is in the Blower Performance Table.
Blower speed changes are made on the ICM Fan Control mounted
in the control box. The ICM Fan Control controls the variable speed
motor.
There is a bank of 8 dip switches, (See Figure 15), located at the
lower right side of the board. The dip switches work in pairs to match
the cooling/heat pump airflow (CFM/TON), Fan off-delay options,
and electric heat airflow adjustment. The switches appear as shown
in Figure 15.

ICM FAN CONTROL
CFM
SELECTION

LIG_

DIP

.SWITCHES
CNT03600
_qz
21C800796P01_

CFM FAN

Y LO

SUPPLEMENTARY
NEAT
The supplementary electric heat is brought on when the indoor
temperature drops 1-1/2 degrees below the thermostat setting.
TSN=2 contacts close providing power to the "W" terminal on the
indoor thermostat and to the supplementary heater control circuit.
NOTE. The fan relay (F) must have been energized. An outdoor
thermostat may have been added to disallow the second stage (if
provided) of electric heat above a selected outdoor temperature. If
the outdoor temperature falls below the setting on the outdoor
thermostat, this additional heater stage will come on. When the
outdoor air temperature rises, and the outdoor T-stat setpoint is
reached, the system will revert back to first stage electric heating.
When the indoor ambient is satisfied, TSH=2 contacts will open and
the unit will revert back to the compressor only heating mode and
then off. For emergency heat (use of supplementary electric heat
only), an emergency (EMERG) heat switch is provided within the

W3 W2 Wl

12345678

DIP SWITCHES (TYPICAL SETTINGS)

Page 15

DEMAND DEFROST SYSTEM
DEFROST

CONTROL

PiN IDENTIFICATION

The demand defrost control measures heat pump outdoor ambient
temperature with a sensor located outside the outdoor coil. A
second sensor located on the outdoor coil is used to measure the
coil temperature.
The difference between the ambient and the
colder coil temperature is the difference or detta-T measurement.
This detta-T measurement is representative of the operating state
and relative capacity of the heat pump system. By measuring the
change in delta-T, we can determine the need for defrost. The coil
sensor also serves to sense outdoor coil temperature for termination of the defrost cycle.
FAULT DETECTION
A fault condition is indicated by the flashing
control inside the heat pump control box.

light on the defrost

PIN IDENTIFICATION
(See Figure)
1. TEST_COMMON
(Shorting any of the other pins to this pin
causes the function of the other pin to be executed. Leaving this
pin open results in the normal mode of operation.)
to this pin speeds up

3. FRC_DFT = Forced Defrost (Short TEST_COMMON to this pin
for two (2) seconds to initiate a forced defrost. Remove the short
after defrost initiates.)

PROCEDURE

FORTESTING

DFT

[]
D

TEST

COMMON

D
TST

In normal operation, the defrost control light wilt flash once each
second. If the light is flashing more than once per second or not-atall, refer to the service manual for that unit.

2. TST = Test (Shorting TEST_COMMON
all defrost board timings.)

FRC

DEFROST

CONTROL

b. 24V AC between R & B
c. 24V AC between Y & B with unit operating
d. Defrost
initiation
when
TEST_COMMON pin.

WARNING:

Unplug the sensor and measure the resistance with a good quality ohmmeter (Simpson
260 or equiv.). Read the value as quickly as possible to prevent the meter current from
changing the resistance reading.
Using the chart on the right, locate (as close as possible) the actual sensor temperature.
The measured resistance should be relatively close to the resistance value shown in the
chart.
Example:
= 19°F.
= 46K ohms

is shorted

This sensor is good since the measured value is relatively close to the
chart value.

TEMP °F
86
81
75
70
65
59
55
50
45
41
36
32
25
19
14
10
5
0

RESISTANCE
7.85K
8.85K
10.24K
11.59K
13.14K
15.32K
16.93K
19.41K
22.20K
24.76K
28.45K
31.84K
37.50K
46.44K
53.94K
57.64K
67.06K
78.05K

FLASH RATE INDICATIONS:
I -- Flash/Second

= Normal operation.

2-- Flashes/Second = Fault A (Low AT) i.e.: Inoperative compressor, toss of charge, open ambient sensor, shorted coil sensor.
3-- Flashes/Second = Fault B (20 defrosts terminated on time)
Fault C (High AT) i.e.: SOV stuck in heating, shorted ambient sensor, open coil sensor, closed TXV,
OD motor failure, OD fan on in defrost, undercharged
4--Flashes/Second

DONOT
connect
24VAC
tT
oI

(ODS-A) terminal. ODS-A thermistor WILL BE BLOWN.

Measure the temperature the subject sensor is exposed to. If the sensor is mounted on a
tube, place the lead on an Annie A-8 (or equiv.) temperature tester on the same tube near
the sensor and insulate the bulb.

Measured Resistance

FRC_DFT

If a defrost control problem is suspected, proceed to DEMAND
DEFROST CONTROL CHECKOUT in this Service Facts.

SENSORS

Sensor temp.

CHECKOUT

Normal operation requires:
a. LED on board flashing 1 time/second.

unit.

= FaultA&CorA&B

For additional information consult Pub. No. 34-1001 Heat Pump Defrost Controls.
Page 16

DEMAND DEFROST CONTROL CHECKOUT
SYMPTOMS

CHECKS

YES/NO

1. LED off.
1.24V R-B & Y-B at board, with unit running?

2.Short FRC_DFT pin to TEST_COMMON
Is defrost cycle initiated?
2. LED flashing very rapidly (greater
than 4 times/sec) or appears to be on
continuously.
3. Control does not initiate a normal
defrost.

TEST_COMMON

pin.

Repair low voltage wiring.

Complete

Replace defrost control.

LED is bad but control will still function.

Remove short.

Replace defrost control.

Check refrigerant circuits for balanced
distribution of refrigerant if OD coil is
frosting and delta T is not increasing

Refer to SYMPTOM #1.

Complete

Repair low voltage wiring.

Complete

OD Temp. below 49°E
OD Coil temp. below 35°F.?
"Delta" T increasing?

2. Check for 24V Y-B at board with unit running.
3. Check sensors for correct mounting
(connection) and resistance.

Check #2.

Check #3.

Remount or replace sensor if necessary.

4. Short FRC_DFT pin to TEST_COMMON
Is defrost cycle initiated?

pin.

Replace defrost control.

Y-B signal or control may be intermittent

Repair low voltage wiring.

Replace defrost control.

24V R-B & Y-B at board with unit running?

5. Defrost initiates manually but terminates
6. Defrost initiates manually but
terminates on time.

Check #2.

pin shorted to TST pin?

1. LED flashing?

4. Control does not initiate a forced
defrost.

ACTIONS

in less than 10 seconds.

Replace defrost control.

1. Coil sensor circuit open or reading at a very
high resistance?

Replace coil sensor.

2. Does OD fan cycle off in defrost?

Replace defrost control.

Be sure OD coil is clean.

Complete

1. Coil sensor open or reading a very
high resistance?

Replace coil sensor.

Complete

Replace ambient sensor.

3. OD fan off in defrost?

Replace defrost control.

1.TEST_COMMON

3. Windy weather preventing normal
termination?
7. Defrost initiates on approximately
15/25 minute intervals.

2. Ambient sensor reading less than normal?

8. Defrost initiates on approximately
30/45 minute intervals.

pin shorted to TST pin?

Complete

less than

Replace defrost control.

5. OD fan motor off in defrost.

See SYMPTOM #9.

6. Verify proper SOV operation.

Replace if necessary.

Has J1 been cut?

Replace defrost control.
The soft-switch time is defeated when J1
is cut.

11. ODS-A burned out.
1. B to T greater than 10 volts?

13. On SCROLL bearing units, no 30
second off delay at defrost initiation.

SYMPTOM #3.

Adjust as needed.

9. OD fan runs during defrost.

12. On SCROLL bearing units,
compressor does not operate.

Remove short.
Replace defective sensor (Clear coil and
reset Emergency heat light).

3. Verify correct system charge.

10. No SOV delay on defrost
termination.

Check #3.

N
2. Do both sensors check OK?

4. Verify a "forced defrost" terminates
15 minutes.

Check #2.

1.24V

R-B at board & 24V Y-B at board?

2. Check protective devices in YO circuit. 24V
YO-B present after 30 seconds.
Check voltage between control terminals 2 and
7,force a defrost cycle. Is 24V present for 30
seconds and 0V thereafter?

Replace defrost control.

Check low voltage wiring for miswire.

Check for short in low voltage wiring.

Repair low voltage wiring.

Y-B signal or control may be intermittent

Replace defrost control.

Page

MAINTENANCE
ROUTINE MAINTENANCE BY OWNER
You can do some of the periodic maintenance functions for
your WCX-G unit yourself; this includes replacing the disposable 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 sure 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.)
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-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.

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 AND
PREVENT
AN EXPLOS,ON
OR POSSIBLE INJURY, DEATH
EQUIPMENT
DAMAGE, I
DO NOT STORE COMBUSTIBLE MATERIALS, GASOLINEI
OR OTHER FLAMMABLE VAPORS OR LIQUIDS NEAR THE I
UNIT.
l
I

The following

warning

complies

WARNING:

with State of California

law, Proposition

This product

65.

contains

MEASURES

• Avoid breathing fiberglass dust.
MAINTENANCE PERFORMED BY SERVICEMAN-COOLING SEASON
To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the
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 WCY-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)

• Use a NIOSH approved dust/mist respirator.
• Avoid contact with the skin or eyes. Wear longsleeved, 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

•

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)

• the unit (for obvious unit deterioration)
Page 18

Skin Contact

Flush eyes with water to remove dust.
If symptoms persist, seek medical
attention.
Wash affected areas gently with soap
and warm water after handling.

LiMiTED WARRANTY
HiGH EFFiCiENCY
HEAT PUMP
WCZ, WCY AND WCX
Models Less Than 20 Tons for Residential

Use*

(Parts Only)
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
3roducts 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.
In addition, if the sealed motor-compressor(s)
fail(s) or the outdoor
or both events occurring because of a manufacturing
defect within
date of original purchase, Warrantor will furnish without charge the
and/or outdoor coil. Any local transportation,
related service labor,
related items are not included.

coil* should become defective, either
the sixth through tenth year from the
required replacement compressor
diagnosis calls, refrigerant and

*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
3ossession, damage caused by unreasonable use of the Heat Pump and/or damage from failure
properly maintain
the Heat Pump as set forth in the Use and Care manual (see Proper
Maintenance
section).

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
3roduced 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
IMPLIED, IN LAW OR IN FACT, INCLUDING
BUT NOT SPECIFICALLY LIMITEDTO
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
exclusion or
not apply to
rights which

do not allow limitations on how long an implied limited warranty lasts or do not allow the
limitation of incidental or consequential damages, so the above limitation or exclusion may
you.This limited warranty gives you specific legal rights, and you may also have other
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.

GW-624-1802

Troup Highway
Tyler, TX 75711-9010
Attention: Manager, After Sales Support
Page 19

equipment is used for a commercial application. A commercial use is any application
purchaser uses the product for other than personal, family or household purposes.

where the end

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
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 EO.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.
GW-604-4800

Troup Highway
Tyler, TX 75711-9010
Attention: Manager, After Sales Support

* 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 The Trane Company has a policy of continuous product and product data
improvement, it reserves the right to change design and specification without notice,

The Trane Company
Unitary Products Group
6200 Troup Highway
Tyler, TX 75707-9010
An American-Standard

Page 20

Company

o( )os

Technical Literature - Printed in U.S.A.

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TRANE Package Units(both Units Combined) Manual L0905299

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