TRANE Air Conditioner/heat Pump(outside Unit) Manual L0810502
User Manual: TRANE TRANE Air conditioner/heat pump(outside unit) Manual TRANE Air conditioner/heat pump(outside unit) Owner's Manual, TRANE Air conditioner/heat pump(outside unit) installation guides
Open the PDF directly: View PDF 
.
Page Count: 8
To
It's Hard To Stop A Trane_. M
I STALLER'
GUI E
Library
Product Section
Product
Model
Literature Type
Sequence
Date
File No.
Supersedes
18-BC42 D 1-2
Model:
TWZ036-060A Heat Pumps
IMPORTANT -- This Document is customer property and
pack upon completion of work.
These instructions do not cover all variations in systems
nor provide for every possible contingency to be met in
connection with installation. Al! phases of this installa-
tion must comply with NATIONAL, STATE AND LOCAL
CODES. Should further information be desired or should
particular problems arise which are not covered sufficiently for
the purchaser's purposes, the matter should be referred to your
installing dealer or local distributor.
A. GENERAL
NOTICE: The TWZ036-06OA outdoor units are only ap-
proved with indoor units equipped with thermostatic
expansion valve refrigerant controls.
Check for transportation damage after unit is uncrated. Report
promptly, to the carrier, any damage found to the unit.
To determine the electrical power requirements of the unit,
refer to the nameplate of the unit. The electrical power available
must agree with that listed on the nameplate.
The Weathertron ®Heat Pump has been designed and manufac-
tured to withstand and operate in severe winter conditions.
However, there are precautionary steps which should be taken
at the time of installation which will help assure the efficient
operation of the unit. It is recommended that these precau-
tions be taken for units being installed in areas where
snow accumulation and prolonged below freezing tem-
peratures occur.
1. Units should be elevated 3 to 12 inches above the pad or
rooftop, depending on local weather. This additional height will
allow better drainage of snow and ice (melted during defrost
cycle) prior to its refreezing. This should prevent a build-up of
ice around the unit which occurs when unit is not elevated.
Insure that drain holes in unit base pan are not ob-
structed preventing draining of defrost water.
2. If possible, avoid locations that are likely to accumulate snow
drifts. If not possible, a snow drift barrier should be installed
around the unit to prevent a build-up of snow on the sides of the
unit and should be of sufficient distance from the unit to prevent
restriction of airflow to and from the unit. Also allow for proper
maintenance space. The barrier should be constructed of mate-
rials which will blend in with the building design.
is to remain with this unit. Please return to service information
d)
3. Avoid locating the unit where condensation and freezing of
defrost vapor may annoy the customer. For instance, installing
the unit under a bedroom, kitchen, or picture window may be
annoying to the customer since condensate and fog will occur
during the defrost cycle.
4. Avoid locating the unit under the eaves or other overhead
structures as sizeable icicles may form and the unit may be
damaged by these falling icicles.
Since the manufacturer has a policy of continuous
product improvement, it reserves the right to change
specifications and design without notice.
© American Standard Inc. 1997 Dwg. No. 18-BC42D1-2
I STALLER'S GUI E
B. REFRIGERANT FLOW CONTROLS
Use only approved indoor units. The indoor coil flow control must
be equipped with a thermal expansion valve. Indoor units with-
out factory installed TXV must be modified to include the approved
BAYTXV-kit.
C. LOCATION & PREPARATION OF THE UNIT
1. The unit should be set on a level support pad at least as large
as the unit base pan.
2. The support pad must NOT be in direct contact with any
structure. The unit must be positioned a minimum of 12" from
any wall or surrounding shrubbery to insure adequate airflow. A
30" clearance must be provided in front of control box (access
panels) & any other side requiring service access to meet Na-
tional Electrical Code. The unit must be far enough away from
any structure to prevent excess roof run-off water from pouring
directly on the unit.
3. The top discharge area must be unrestricted for at least five
(5) feet above the unit.
4. When the outdoor unit is mounted on a roof, be sure the roof
will support the unit's weight. Properly selected vibration
isolators are recommended to prevent transmission to the build-
ing structure.
5. The maximum length of refrigerant lines from outdoor to
indoor unit should NOT exceed eighty (80) feet.
6. Maximum difihrence in elevation should not exceed twenty-
five (25) feet.
7. Locate and install indoor coil or blower coil in accordance with
instruction included with that unit.
8. A pull-thru hole for the refrigerant lines should be provided of
sufficient size to allow the passage of both liquid and suction
lines.
9. Determine if adequate power supply is available and correct
according to nameplate specifications.
10. Install the unit in accordance with national, state, and local
codes.
D. INSTALLING REFRIGERANT LINES
Pressure taps are provided on the service valve plate and on
service valve of outdoor unit for compressor suction and liquid
pressures.
The indoor end of recommended refrigerant line sets may be
straight or with a 90 degree bend, depending upon situation
requirements. This should be thoroughly checked out before
ordering refrigerant line sets.
The gas line must always be insulated.
The units are factory charged with the system charge required
when using twenty-five (25) feet of connecting line. Unit name-
plate charge is the same. Final refrigerant charge adjustment
is necessary, use the Charge Charts in the outdoor unit
Service Facts.
1. Determine the most practical way to run the lines.
2. Consider types of bends to be made and space limitations.
NOTE: Large diameter tubing will be very difficult to rebend once
it has been shaped.
3. Determine the best starting point for routing the refrigerant
tubing -- INSIDE OR OUTSIDE THE STRUCTURE.
4. Provide a pull-thru hole of sufficient size to allow both liquid
and gas lines plus fittings to clear. The location of this hole (if
practical) should be just about the wall plate which is resting on
the foundation.
5. Be sure the tubing is of sufficient length.
6. Uncoil the tubing -- do not kink or dent.
7. Route the tubing making all required bends and properly
secure the tubing before making connections.
8. To prevent a noise within the building structure due to
vibration transmission from the refrigerant lines, the following
precautions should be taken:
a. When the refrigerant lines have to be fastened to floor
joists or other framing in a structure, use isolation type hangers.
b. Isolation hangers should also be used -when refrigerant
lines are run in stud spaces or enclosed ceilings.
c. Where the refrigerant lines run through a wall or sill, they
should be insulated and isolated.
d. Isolate the lines from all ductwork.
E. SERVICE VALVE OPERATION
BRASS LIQUID AND GAS LINE SERVICE VALVE OP-
ERATION
The Service Valves are factory shipped in the seated position to
hold factory charge. The pressure tap service port (when de-
pressed) opens only to the field brazing side of the valve when the
valve is in the seated position. The liquid line valve isnot a back
seating valve (see WARNING below).
WARNING: Extreme caution should be
exercised so the internal steel stem retaining ring is not
damaged by backing out the valve stem when opening the
valve. If the valve stem is forced out past the retaining
ring, system pressure could force the valve stem out of the
valve body. If the retaining ring is missing, do not attempt
to open the valve. See Figure 2.
BRASS GAS LINE BALL SERVICE VALVE
The Brass Gas Line Ball Service Valve is shipped in the closed
position to hold the factory refrigerant charge. The pressure tap
service port (when depressed) opens only to the field brazing side
when the valve is in the closed position.
The Gas Line Service Valve is full open with a 1/4 turn counter-
clockwise. See Figure 3.
PAGE 2 Dwg. No. 18-BC42D1-2
I STALLER'S GUI E
@LiQUiD LiNE SERVICE VALVE
UNIT SIDE OF
SERVICE
HEX HEADED
LIQUIDLINE
CONNECTION
RETAINING RING
BRAZING REFRIGERANT LINES
1. Before brazing, remove plugs from external copper stub tubes.
Clean internal and external surfaces of stub tubes prior to
brazing.
2. Cut and fit tubing minimizing the use of sharp 90 °bends.
3. Insulate the entire gas line and its fittings.
4. Do NOT allow uninsulated liquid line to come in direct
contact with bare gas line.
5. Precautions should be taken to avoid heat damage to
the pressure tap valve core during brazing. It is recom-
mended that the pressure tap port valve core be removed
and a wet rag wrapped around the valve body.
GAS LiNE SERVICE VALVE
CAP _
UNIT SIDE
OF VALVE
#
PRESSURE TAP PORT j
/
GAS LINE CONNECTION
d,
CAP _ &
CORE
NOTICE: Use care to make sure that no moisture enters
pressure tap port, while wet rag is being used.
6. Remove braze shield from clear plastic bag. Soak pad in water
and place over suetion and liquid lines to protect unit finish. See
Figure 4. Discard pad when finished with brazing.
7. Use a Dry Nitrogen Purge and Brazing Alloy without flux
when brazing the field line to the copper factory connection. Flow
dry nitrogen into either valve pressure tap port, thru the tubing
and out the other port while brazing.
8. Braze using accepted good brazing techniques.
LEAK CHECK
IMPORTANT: Replace pressure tap port valve core be-
fore attaching hoses for evacuation.
After brazing operation of refrigerant lines to both the outdoor
and indoor unit is completed, the field brazed connections must
be checked for leaks. Pressurize through the service valve ports,
the indoor unit and field refrigerant lines with dry nitrogen to
200 psi. Use soap bubbles or other leak-checking methods to see
that all field joints are leak-free! If not, release pressure; then
repair!
SYSTEM EVACUATION
NOTE: Since the outdoor unit has a refrigerant charge, the gas
and liquid line valves must remain closed.
1. Upon completion of leak check, evacuate the refrigerant lines
and indoor coil before opening the gas and liquid line valves.
2. Attach appropriate hoses from manifold gauge to gas and
liquid line pressure taps.
NOTE: Unnecessary switching of hoses can be avoided and
complete evacuation of all lines leading to sealed system can be
accomplished with manifold center hose and connecting branch
hose to a cylinder of HCFC-22 and vacuum pump.
3. Attach center hose of manifold gauges to vacuum pump.
4. Evacuate until the micron gauge reads no higher than 350
microns.
5. Close offvalve to vacuum pump and observe the micron gauge.
If gauge pressure rises above 500 microns in one (1) minute, then
evacuation is incomplete or system has a leak.
6. If vacuum gauge does not rise above 500 microns in one (1)
minute, the evacuation should be complete.
7. With a vacuum pump and micron gauge blanked off, open
valve on HCFC-22 cylinder and charge refrigerant lines and
indoor coil with vapor to tank pressure of HCFC-22 supply.
NOTE: DO NOT VENT REFRIGERANT INTO THE
ATMOSPHERE.
Dwg. No. 18-BC42D1-2 PAGE 3
I STALLER'S GUI E
HEAT SHIELD
8. Close valve on HCFC-22 supply cylinder. Close valves on
manifold gauge set and remove refrigerant charging hoses from
liquid and gas pressure tap ports.
NOTE: A 3/16" Allen wrench is required to ()pen liquid line
service valve. A 1/4" Open End or Adjustable wrench is required
to ()pen gas line valve. An Adjustable or 3/4" Open End wrench
is required to take ()['['the valve stern cap.
9. The liquid line shut-offvalve can now be opened. Remove shut-
offvalve cap. Fully insert hex wrench into the stein and backout
counterclockwise until valve stein just touches retainer ring
(approximately five (5) turns) observing WARNING statement.
See Figure 2.
10. Replace liquid service pressure tap port cap and valve stem
cap. These caps MUST BE REPLACED to prevent leaks.
Replace valve stein and pressure tap cap finger tight, then
tighten an additional 1/6 turn.
11. The gas valve can now be opened. Open the gas valve by
removing the shut-off valve cap and turning the valve stem
1/4 turn counterclockwise, using 1/4" Open End or Adjustable
wrench. See Figure 3.
12. The gas valve is now open for refrigerant flow. Replace valve
stem cap to prevent leaks. See Figure 3.
If refrigerant lines are longer than 25 feet and/or a dift_rent size
than recommended, it will be necessary to adjust system refrig-
erant charge upon completion of installation.
F. ELECTRICAL CONNECTIONS
WARNING: Wheninstalling or servicing
this equipment, ALWAYS exercise basic safety precau-
tions to avoid the possibility of electric shock.
1. Power -wiring and grounding of equipment must comply with
local codes.
2,
3.
4.
Power supply must agree with equipment nameplate.
Install a separate disconnect switch at the outdoor unit.
Ground the outdoor unit per local code requirements.
5. Provide flexible electrical conduit whenever vibration trans-
mission may create a noise problem within the structure.
6. The use of color coded low voltage -wire is recommended to
simplify connections between the outdoor unit, the thermostat,
and the indoor unit.
Table 1 -- NEC Class II Control Wiring
24 VOLTS
WIRE SIZE MAX. WIRE LENGTH
*22 AWG 30 FT.
20 AWG 100 FT.
18 AWG 150 FT
16 AWG 225 FT.
14 AWG 300 FT.
*If 22 AWG is used, make sure it is high quality wire.
7. Table 1 defines maximum total length of low voltage wiring
from outdoor unit, to indoor unit, and to thermostat.
8. Mount the indoor thermostat in accordance with instruction
included with the thermostat. Wire per appropriate hook-up
diagram (included in these instructions).
G. ELECTRICAL HEATERS
Electric heaters, if used, are to be installed in the air handling
device according to the instructions accompanying the air han-
dler and the heaters.
H. START KIT
These units have quick start components which are factory
installed.
PAGE 4 Dwg. No. 18-BC42D1-2
I STALLER'S GUI E
I. OUTDOOR THERMOSTAT
An outdoor thermostat TAYSTAT250A may be field installed.
For data see wiring diagram attached to unit and instruction
sheet packaged with outdoor thermostat.
J. DEFROSTCONTROL
The demand defrost control measures heat pump outdoor ambi-
ent 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 diflhrence between the ambient and the
colder coil temperature is the dift_rence or delta-T measurement.
This delta-T measurement is representative of the operating
state and relative capacity of the heat pump system. By measur-
ing 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 light on the defrost
control inside the heat pump control box.
In normal operation, the defrost control light will flash once each
second. If the light is flashing more than once per second or not-
at-all, refer to the service manual for that unit.
PIN IDENTIFICATION
1. NORM. = Normal (This wire, as shipped, is unattached to
any pin. In this position, the default condition is normal opera-
tion. However, after checking for proper operation, the wire
should be returned to the normal pin.)
2. TST. = Test (Red test wire in this position speeds up all
defrost board timings.)
3. FOR. DFT. = Forced Defrost (Touch the red test wire to this
pin for ten (10) seconds to initiate a forced defrost. Return wire
to the normal pin after defrost initiates.)
K. OPERATIONALANDCHECKOUTPROCEDURES
Final phases of this installation are the unit Operational and
Checkout Procedures which are found on page 8 of this instruc-
tion.
L. COMPRESSOR SUMP HEAT
After all electrical wiring is complete, SET THE THERMOSTAT
SYSTEM SWITCH IN THE OFF POSITION SO COMPRESSOR
WILL NOT RUN, and 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 of HCFC-22 in
the compressors (30 minutes for each pound of HCFC-22 in the
system as shown on the nameplate). Following this procedure
will prevent compressor damage at the initial start-up.
Record the "POWER APPLIED DATA" on the designated lines
below:
Time A.M./P.M. Date
By Electrician
(SEE WIRING DIAGRAMS )
4. FOR. FLT. = Forced Fault (Touch the red test wire to this pin
for ten (10) seconds to demonstrate a fault condition.)
DEFROSTCONTROLCHECKOUT
Normal operation requires:
a. LED on board flashing 1 time/second.
b. 24V AC between R & B
c. 24V AC between Y & B with unit operating
d. Defrost initiation when test wire is moved to "Forced
Defrost" pin, then return to "Normal Pin", with unit
operating in heating mode.
If a defrost control problem is suspected, re%r to the service
information in control box.
Dwg. No. 18-BC42D1-2 PAGE 5
I STALLER'S GUI E
A TYPICAL FIELD WIRING DIAGRAM FOR TWZ036-060A WITH
VARIABLE SPEED AiR HANDLERS
NOTES:
1. POWER WIRING AND GROUNDING OF EQUIPMENT MUST
COMPLY WITH LOCAL CODES.
2. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT
NAMEPLATE.
3. LOW VOLTAGE WIRING TO BE NO. 18 A.W.G. MINIMUM
CONDUCTOR.
4. USE COPPER CONDUCTORS ONLY.
5. POLARIZED PLUG SECTION PM-A IS ATTACHED TO HEATER
CONTROL BOX. SECTION 1-PF IS FACTORY WIRED INTO
AIR HANDLER.
6. IF ODT-B IS NOT USED, CONNECT A JUMPER WIRE
FROM W3 TO W2.
IF ODT-A IS NOT USED, CONNECT A JUMPER WIRE
FROM W2 TO W1.
7. IF ELECTRIC HEATER DOES NOT HAVE 3RD CONTACTOR (CH),
CONNECT A JUMPER WIRE FROM W3 TO W2.
IF ELECTRIC HEATER DOES NOT HAVE 2ND CONTACTOR (BH).
CONNECT A JUMPER WIRE FROM W2 TO W1.
8. CONNECT OUTDOOR F TO THERMOSTAT F AS SHOWN.
9. IF AN INSUFFICIENT NUMBER OF CONDUCTORS IS PRESENT,
OMIT F CONNECTION TO THE THERMOSTAT AND CONNECT
OUTDOOR F TO R IN THE OUTDOOR UNIT.
10. X2 MUST BE CONNECTED TO VARIABLE SPEED AIR HANDLER
TERMINAL W3 AS SHOWN FOR PROPER INDOOR AIR FLOW
DURING THE DEFROST CYCLE.
HEAl PUMP
O, D, SECTION
ITWO COMPRESSORS/
E!ECTRON!C //EATPUMP
THERMOSTAT TAYSTATS02
3 HEAT/2 CO@
J I
......:tL_ {
.............................i
10 X2_i/_, \/\//
NOT
0OTA ( .......
TO POWR SbPPI Y
PER OCAL CODES
IN ER COMPONENI WIRING
............................24 V. _ FACTORY
...................... LINE V._" WRING
24V. _ FIELD
lINE V:,#W!RF;6
TO POWER SUPPLY PER
LOCAl CODED &AS DEF NED
OPERATION,
From Dwg. 21B151201 Rev. 0
A TYPICAL FIELD WIRING DIAGRAM FOR TWZ036-060A WiTH
VARIABLE SPEED FURNACES
NOTES:
1. POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH
LOCAL CODES.
2. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT NAMEPLATE.
3. LOW VOLTAGE WIRING TO BE NO. 18 A.W.G. MINIMUM CONDUCTOR.
4. USE COPPER CONDUCTORS ONLY.
5. MAKE THIS JUMPER CONNECTION ONLY IF THE FURNACE NEEDS FAN
ENABLE SIGNAL FOR HEATING OPERATION.
6. BONNET THERMOSTAT REQUIRED IF BONNET TEMPERATURE
OF 150° OR GREATER IS ANTICIPATED.
HEATPUMP T_ ]
__M;_I tl
£.
[NTER-COMPONENT WIRING -_' I L'_ -[0POWER SUPPLY
L] PER LOCAL CODES
2dV, ]FACTORY
LINE V._"WIRING
24V. ] FIELD
I LINE V,_ WIRING
ELECTRONICHEATPUMP
THERMOSTATTAYSTAT502
3 HEAT/2COOL
LTAYPLUS103A
TO POWER SUPPLY PER
LOCAL CODES & AS DEFINED
IN FIELD WIRING FABLE
_m
VARIABLE SPEED
GAS FURNACE
I WITH ICM FAN MOTORI
SEE FURNACE DIAGRAM
FOR PROPER OIP SWITCH
SETTINGS AND HUMIDISTAT
OPERATION,
From Dwg. 21B151210 Rev. 0
PAGE 6 Dwg. No. 18-BC42D1-2
I STALLER'S GUI E
TWZ036=060A OUTLINE DRAWING
SERVICE PANEL _
ELECTRICAL AND REFRIGERANT
COMPONENTS CLEARANCES
PER PREVAILING CODES.
NOTE: ALL DIMENSIONS
ARE IN MM (INCHES).
28,6 11-1/8) DA K,(}, W[FH
222 (7/8) D A, ItOLE /
ELECTR]CAL POWER SUPPLY
22.2 17/8) D[A, _ OLE
LOW VOL lADE
PRESSURE TAPS
I/4" FLARE FITFINGS
229 19) i
1!5 (4 I/2)
LIQUID LINE SERVICE
VALVE,'E'O.D. FEMALE 4 II 5/8}
BRAZED CONNECq ION
WITH I/4" SAE FLARE
PRESSURE TAP _-ITT[NG.
,, !r ![ lr !!
!! ! !! m m
U ! !! m m
UI I! II II
il I Ii II I
U',!!im!',
El I IE II I
i! ! !i m !
U ! !I m F
U ! m m !
H ! m m !
_1 I II II I
El I II II I
II I II II I
Hmmm!
HII II II I
i! m m m !
A
GAS LINE BALL SERVICE
VALVE, BALL I/4 TURN
"D'O.D. FEMALE BRAZED
CONNECTION WITH I/4" SAE
FLARE PRESSURE TAP FITTING.
.....60 {2 3/8)
UNIT SHOULD BE PLACED SO ROOF
RUN-OFF WAFER DOES NO] POUR
DIRECTLY ON UNIT, AND SHOJLD BE
AT LEAST 305 (12") FROM WALL AND ALL
SURROUNDING SHRUBBERY ON TWO SIDES,
OTHER TWO SIDES UNRESTRICTED.
MODELS A B C D E
1095 1010 902
TWZ036A-A 7/8 3/8
(43-1/8) (39-3/4) (35-1/2)
1095 1010 902
TWZ048A-A 1-1/8 3/8
(43-1/8) (39-3/4) (35-1/2)
1095 1010 902
TWZ060A-A 1-1/8 3/8
(43-1/8) (39-3/4) (35-1/2)
From Dwg. 21 D147482 Rev. 6
Dwg. No. 18-BC42D1-2 PAGE 7
I STALLER'S GUI E
CHECKOUT PROCEDURE
After installation has been completed, it is recommended that the entire system be checked against the
following list:
1. Refrigerant Line, Leak checked .......................................................................................................... [ ]
2. Suction Lines and Fittings properly insulated ...................................................................................... [ ]
3. Have all Refrigerant Lines been secured and isolated properly? ........................................................ [ ]
4. Have passages through masonry been sealed? If mortar is used, prevent mortar from
coming into direct contact with copper tubing .................................................................................... [ ]
5. Indoor coil drain line drains freely. Pour water into drain pan ............................................................ [ ]
6. Supply registers and return grilles open and unobstructed ............................................................... [ ]
7. Return air filter installed ...................................................................................................................... [ ]
8. Thermostat thermometer is accurate. Check against a reliable thermometer. Adjust
per instructions with thermostat .......................................................................................................... [ ]
9. Is correct speed tap being used? (Indoor blower motor) ................................................................... [ ]
SYSTEM OPERATIONAL CHECK
IMPORTANT: To prevent compressor damage which may result from the presence of LIQUID refrigerant in the
crankcase, these procedures should be followed at initial Start-Up and at anytime the power has been off for
12 hours or more.
1. Before proceeding with this "Operational Check," go to "Compressor Sump Heat Section" of this instruction to
determine the time compressor heat has been "ON," and make entry of the designated lines, in Step 2.
2. Start-Up Time A.M./P.M. Power Applied Time A.M./P.M.
Time Lapse Hours Minutes.
3. If Steps 1 and 2 cannot be used, then place thermostat's system switch in the "OFF" position and apply power
by closing system disconnect switch. This energizes compressor heat and evaporates the liquid in the
crankcase. TO EVAPORATE LIQUID ALLOW AT LEAST ONE-HALF HOUR PER POUND (HCFC-22), AS
SHOWN ON UNIT NAMEPLATE.
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: Use the pressures from Service Facts to determine the unit refrigerant charge.
To charge the system accurately, use charging curve, or pressures depending
on flow control.
4. Except as required for safety while servicing: DO NOT OPEN SYSTEM DISCONNECT SWITCH.
SUPPLEMENTARY HEATERS CHECKOUT PROCEDURES, IF USED
DOES HEATER REQUIRE A SEPARATE CIRCUIT?
1. Be sure the fused disconnect switch is "OFF," and safety label (if any) is attached ................................ [ ]
2. Check on field wiring for sound connections and grounding according to codes ..................................... [ ]
3. Check fuses for proper size per nameplate specifications ..................................................................... [ ]
4. Check control box panel- in place and secured .................................................................................. [ ]
NOTE: OPERATION OF HEATERS MUST BE CHECKED DURING THE OPERATION CHECK OF THE TOTAL
SYSTEM. The Trane Company
6200 Troup Highway
Technical Literature -Printed in U.S.A. Tyler, TX 75707
PAGE 8 Dwg. No. 18-BC42D1-2
