TRANE Air Conditioner/heat Pump(outside Unit) Manual L0802029
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
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TWR-IN-3E
18-BC29D8-6
It's Hard
Library
Product Section
Product
Model
To Stop A Trane7
Literature Type
Sequence
Date
File No.
INSTALLER'S
GUI E
property
and is to remain
These instructions
do not cover all variations
in systems
nor provide
for every possible
contingency
to be met in
connection
with installation.
All phases
of this installation must comply
with NATIONAL,
STATE AND LOCAL
CODES.
Should further
information
be desired or should
particular
problems arise which are not covered sufficiently
fbr
the purchaser's
purposes, the matter should be referred to your
installing
dealer or local distributor.
TWR-IN-3D
Heat Pumps
& TWR036,048,060D
is customer
Installer's Guide
3E
March 2000
SV-UN-S/SP-TWR-IN-3E 3/00
Supersedes
Model:
TWR012,018,024,030,042C
IMPORTANT
-- This Document
completion of work.
Service Literature
Unitary
Split System Heat Pump
TWR
with this unit.
Please return
to service information
pack upon
TOP DISCHARGE --- UNRESTRICTED
5 FT. ABOVE UNIT
A, GENERAL
NOTICE:
These outdoor
units may be used with indoor
units
equipped
with Capillary
Tube, Thermostatic
Expansion
Valve or the Accutron
TM
Flow Control
Check
Valve (F.C.C.V.)
assembly
for refrigerant
flow control.
Check fbr transportation
promptly, to the carrier,
damage al_er unit is uncrated.
any damage found to the unit.
Report
To determine
the electrical power requirements
of the unit, refhr
to the nameplate
of the unit. The electrical power available nmst
agree with that listed on the nameplate.
The Weathertron®
Heat Pump has been designed and manufactured 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 precautions be taken for units being
installed
in areas
where
snow accumulation
and prolonged
below freezing
temperatures
occur.
1. Units should be elevated 3 to 12 inches above the pad or
rooftop, depending on local weather.
This additional
height will
allow be tter drainaqe of snow and ice (melted during de[_'ost cycle)
prior to its re[keezing.
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 obstructed
preventing
draining
of" defrost
water.
2. If possible, avoid locations that are likely to accmnulate
snow
drif_bs. If not possible, a snow drilt 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 l?om the unit to prevent
restriction
of airflow to and from the unit. Also allow fbr proper
maintenance
space. The barrier
should be constructed
of
materials
which will blend in with the building design.
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
© American
Standard
Inc. 2000
has a policy of continuous
product improvement,
it reserves
specifications
and design without
the right to change
notice.
I STALLER'S GUIDE
B. LOCATION
& PREPARATION
OF THE
1. The u nit should be set on a level support
as the unit base pan.
UNIT
pad at least
TYPE
iNDOOR
END
SEALING
2. The support
pad must NOT be in direct contact with any
structure.
The unit must be positioned
a minimun_ of 12" fi'om
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
National
Electrical
Code. The unit must be far enough away
fi'om any structure
to prevent
excess roof run-off water from
pouring directly on the unit.
3. The top discharge
(5) feet above unit.
BRAZE
as large
area must be unrestricted
fbr at least five
COMPONENTS
ACCUTRONTM
)
\
FLOW CONTROL
CHECK VALVE
(F.C.C.V.)ORIFICE
/
BODY
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
building structure.
5. The maximum
length of refi'igerant
lines fi'om outdoor
indoor unit should NOT exceed sixty (60) feet.
AS SHIPPED
_
to
LIQUID LINE
FIELD SUPPLIED
[_
6. Maximum
(60) f_et.
NOTE:
difference
in elevation
Refi_r to '_efHgerant
should
not exceed sixty
Pipir_ Sk_flu:are': Pub. No. 22-3312-01.
7. Locate and install indoor coil or blower
with instruction
included with that unit.
8. A pull-thru hole for the ref>igerant
of sufficient size to allow the passage
lines.
coil in accordance
lines should be provided
of both liquid and suction
9. Determine
if adequate power supplyis
according to nmneplate
specifications.
available
10. Install
the
local codes.
national,
C. ACCUTRON
unit
TM
in accordance
FLOW
CONTROL
and correct
ments. This should be thoroughly
refrigerant
line sets.
The gas line must
state,
and
VALVE
If the indoor unit System
Refi'igerant
Flow control is an
Accutron TM orifice and check valve assembly,
an orifice size
change may be necessary.
The outdoor model determines
the required
orifice size. Check
the listed orifice size on nameplate
of the selected
outdoor
model. If the indoor unit is factory shipped with a different
orifice size, the orifice must be changed to obtain system rated
performance.
IMPORTANT:
The outdoor unit is shipped with the proper
size orifice and a stick-on
orifice size label in an envelope
attached to the outdoor unit. Outdoor unit nameplate
will have
correct orifice size specified as BAYFCCV -- A for rated perfbr-
always
checked
out befbre ordering
be insulated.
The units are factory charged with the system charge required
when using fil_een (15) feet of connecting line. Unit nameplate
charge is the same. Final ref1"igerant
charge adjustment
is
necessary,
use the Charge Charts in the outdoor unit Service
Facts.
1. Determine
with
CAP
2. Consider
the most practical
types
of bends
NOTE:
Laqge diameter
once it has been shaped.
3. Determine
tubing-INSIDE
way to run
to be made
tubing
the best starting
OR OUTSIDE
the lines.
and space
will be very difficult
limitations.
to rebend
point fbr rou ting the refrigerant
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 fbundation.
5. Be sure the tubing
6. Uncoil
the tubing
is of sufficient
length.
-- do not kink
or dent.
7. Route the tubing maMng all required bends and properly
secure the tubing before making connections.
tnance.
D. INSTALLING
REFRIGERANT
Pressure
taps are provided on the service
service valve of outdoor unit for compressor
pressures.
The indoor end of recommended
refiqgerant
straight
or with a 90 ° bend, depending
upon
PAGE 2
8. To prevent
a noise within the building
structure
due to
vibration transmission
fi'om the refi'igerant
lines, the following
precautions
should be taken:
LINES
valve plate and on
suction and liquid
line sets may be
situation
require-
a. When the refiigerant
lines have to be fastened
to floor
joists or other fi'amingin
a structure,
use isolation type hangers.
b. Isolation hangers should also be used when refi'igerant
lines are run in stud spaces or enclosed ceilings.
Pub. No. 18-BC29D8-6
INSTALLER'S GUIDE
®
LiQUiD LiNE SERVICE VALVE
GAS LiNE SERVICE VALVE
RETAINING RING
UNIT SIDE OF
SERVICE
UNIT SIDE OF
SERVICE
VALVE
LIQUID LINE
CONNECTION
LIQUID LINE
HEXHEADED
CONNECTION
c. Where the refrigerant
lines run
they should be insulated
and isolated.
d.
Isolate
E. SERVICE
BRASS
through
a wall
or sill,
the lines from all ductwork.
VALVE
LIQUID
SERVICE
VALVE
OPERATION
The Brass Liquid Line Service Valve is factory shipped in the
seated position to hold factory charge. The pressure tap service
port (when depressed)
opens only to the field brazing side of the
valve when the valve is in the seated position.
The liquid line
valve is not a back seating valve (see WARNING
below).
A WARNING:
Extremecaution
shouldbe
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
3.
BRASS
GAS LINE
BALL
SERVICE
NOTICE:
pressure
The Gas Line Service Valve is hdl open with a 1/4 turn
clockwise.
See Figure 4.
enters
7. Use a Dry Nitrogen Purge and Brazing Alloy without flux
when brazing
the field line to the copper factory connection.
GAS
LINE SERVICE
CAP
-_.___
_
VALVE
114 TURN
ONLY
COUNTERCLOCKWISE
UNIT
OF
SIDE
VALVE
/
TAP
J
PORT
_"
/
GAS
LINE
CONNECTION
LINES
h'om external
copper
surfaces of stub tubes
2. Cut and fit tubing
the use of sharp
the entire
in direct
6. Remove braze shield fl'om clear plastic bag. Soak pad in
water and place over suction and liquid lines to protect unit
finish. See Figure 5. Discard pad when finished with brazing.
counter-
1. Before brazing,
remove plugs
tubes. Clean internal
and external
to brazing.
3. Insulate
to come
Use care to make sure that no moisture
tap port, while wet rag is being used.
PRESSURE
REFRIGERANT
line
VALVE
The Brass Gas Line Ball Service Valve is shipped in the closed
position to hold the factory refi'igerant
charge. The pressure tap
service port (when depressed)
opens only to the field brazing
side when the valve is in the closed position.
BRAZING
liquid
5. Precautions
should
be taken
to avoid
heat damage
to
the pressure
tap valve
core
during
brazing.
It is recommended
that the pressure
tap port valve
core be removed
and
a wet rag wrapped
around
the valve
body.
OPERATION
LINE
4. Do NOT allow uninsulated
contact with bare gas line.
minimizing
stub
prior
CAP
_
{_
90 ° bends.
i l
gas line and its fittings.
CORE
Pub. No. 18-BC29D8-6
PAGE 3
I STALLER'S GUIDE
3. Attach
HEAT SHIELD
center
4. Evacuate
microns.
hose of manifold
until
the micron
gauges
to vacuum
gauge reads
no higher
pump.
than
350
5. Close off valve 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
ATMOSPHERE.
NOT
8. Close
mani%ld
on HCFC-22
supply
cylinder.
Close valves
on
set and remove
refrigerant
charging
hoses from
liquid
and
valve
gauge
gas
VENT
pressure
tap
REFRIGERANT
INTO
THE
ports.
NOTE:
A 3/16" Allen wrench is required to open liquid line
service valve.
A
1/4" Open End or Adjustable
wrench is
required toopen gas line vaIve. An Adjustable
or 3 / 4" Open End
wrench is required to take off the valve stem cclp.
Flow dry nitrogen into either valve pressure
tubing and out the other port while brazing.
8. Braze
LEAK
using
accepted
good brazing
tap port, thru
the
techniques.
CHECK
it, CAUTION:
tions, dome
compressor,
IMPORTANT:
fore attaching
temperatures
may cause
In scroll compressor
applicamay be hot. Do not touch top of
minor to severe burning.
Replace
pressure
tap
hoses for evacuation.
port valve
core
be-
After brazing operation
of refrigerant
lines to both the outdoor
and indoor unit is completed, the field brazed connections
nmst
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-flee!
If not, release
pressure;
then repair!
SYSTEM
EVACUATION
9. The liquid line shut-offvalve
can now be opened.
Remove
shut-offvalve
cap. Fully insert hex wrench into the stem and
backout
counterclockwise
until valve stem just touches
retainer ring (approximately
five (5) turns) observing WARNING
statement.
See Figure 3.
10. Replace liquid service
cap. These caps MUST
Replace valve stem and
tighten an additional
1/6
pressure
tap port cap and valve stem
BE REPLACED
to prevent
leaks.
pressure
tap cap finger tight, then
turn.
11.The gas valve can now be opened. For a ball type gas valve,
open the valve by removing the shut-offvalve
cap and turning
the valve stem 1/4 turn counterclockwise.
See Figure 4. For
brass gas line service valve opening, follow items 9 & 10 above.
12. The gas valve is now open for refrigerant
stem cap to prevent leaks.
See Figure 4.
flow. Replace
valve
If may be necessary
to adjust system refi'igerant
charge
completion
of installation.
System should be operated
checked for proper charge.
upon
and
F. ELECTRICAL
CONNECTIONS
WARN I N G: Wheninstalling
NOTE: Since the outdoor unit has a refi'igerant
and liquid line values must remain closed.
charge,
the gas
1. Upon completion
of leak check, evacuate
lines and indoor coil before opening
the gas
the refl'igerant
and liquid line
this equipment,
tions to avoid
1. Power wiring
local codes.
or servicing
ALWAYS exercise
basic safety
precauthe possibility
of electric
shock.
and grounding
of equipment
must comply with
valves.
2. Attach appropriate
hoses
liquid line pressure
taps.
fl'om manifold
gauge
to gas and
NOTE:
Unnecessary
switching
of hoses can be avoided and
complete evacuation
of'all lines leading to sealed system can be
accomplished
with manifidd center hose and connecting branch
hose to a cylinder of HCFC-22 and uacuum pump.
PAGE 4
2. Power
supply
3. Install
a separate
4. Ground
nmst
the outdoor
agree
with equipment
disconnect
unit
switch
nameplate.
at the outdoor
unit.
per local code requirements.
5. Provide flexible electrical conduit
mission may create a noise problem
whenever vibration transwithin the structure.
Pub. No. 18-BC29D8-6
INSTALLER'S GUIDE
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
2. TST = Test (ShortingTEST_COMMON
up all defl'ost board timings.)
to this pin speeds
3. FRC_DFT
= Forced Defl'ost (Short TEST_COMMON
to
this pin fbr two (2) seconds to initiate a forced defrost. Remove
the short after defl'ost initiates.)
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.
PiN IDENTIFICATION
Z
0
o
c)
h¢0
m_
*If 22 AWG is used, make sure it is high quality wire.
7. Table I defines maximum
fl'om outdoor unit, to indoor
total length of low voltage
unit, and to thermostat.
wiring
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
THERMOSTAT
An outdoor thermostat
TAYSTAT250A
may be field installed.
For data see wiring diagrams
attached
to unit and instruction
sheet packaged with outdoor thermostat.
I.
DEFROSTCONTROL
DETECTION
A fault condition is indicated by the flashing
control inside the heat pump control box.
light on the defl'ost
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 fbr that unit.
PIN
IDENTIFICATION
operation
requires:
a.
LED on board flashing
b.
24V AC between
R & B
c.
24V AC between
Y & B with
d. Defrost
initiation
TEST_COMMON
pin.
If a defrost
information
(See Figure
when
unit operating
FRC_DFT
pin
is suspected,
refhr
is shorted
to the
to
service
IN G: DoNOTconnect
24VACtoT1
WARN
(ODS-A)
1 time/second.
control problem
in control box.
terminal.
J. OPERATIONAL
The demand defl'ost 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
delta-T measurement.
This delta-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 defl'ost
cycle.
FAULT
Normal
HEATERS
Electric heaters, if used, are to be installed
in the air handling
device according
to the instructions
accompanying
the air
handler
and the heaters.
H. OUTDOOR
DEFROSTCONTROLCHECKOUT
ODS-A
thermistor
WILL
BE BLOWN.
ANDCHECKOUTPROCEDURES
Final phases of this installation
are the unit Operational
and
Checkout Procedures which are found on page 8 of this instruction.
K. 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 compressor
(30 minutes for each
pound of HCFC-22 in the system as shown on the nmneplate).
Following
this procedure
will prevent
compressor
damage at
the initial start-up.
Record the "POWER
below:
Time
APPLIED
DATA" on the designated
A.M./P.M.
lines
Date
6)
By
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.)
Pub, No, 18-BC29D8-6
Electrician
(SEE
WIRING
DIAGRAMS
)
PAGE 5
I STALLER'S GUIDE
A TYPICAL
FIELD WIRING DIAGRAM FOR SPLIT SYSTEM
TWR012-060 WiTH AIR HANDLERS
HEAT PUMPS
TOPOWER
SUPPLY
PER
LOCAL
CODES
& AS DEFINED
IN FIELD
WIRING
TABLE
NOTES:
FromDwg.
FOR S PH
A TYPICAL
TWR012=060
FIELD WiRiNG
DIAGRAM
WiTH TAYPLUS103A
FOR SPLIT SYSTEM
CONTROL
ROOM
iN FURNACE
THERMOSTAT
21B131071,Rev.
2
HEAT PUMPS
(RESTRICTED
MODE)
NOTES:
I.
NTER-COMPONEN!
POWER SUPPLY
AND GROUNDING
OF
EQUIPMENT
MUST COMPLY WITHLOOAL
COOLS,
2. BE SURE POWER
SUPPLY
AGREES
WI]H
EOUIPMENINAMEPLATE
WERNG
3,
.......
24 V, ] FACTORY
LINE V:_ WIRING
4.
24V.
_ _]ELD
LINE V>_ WIRING
FIELD INSTALLED
FACTORY WRING
T DR
L__>
lOW VOLTAGE
[24 V_A,C,!
MUST BE
NO, 18 AWB MIN,
THIS LEAO REQUIRED
ONLY
IF FURNACE
NEEDS
"Y"TO
OELWER
FULL COOLING
AIRFLOW.
5.
MAKE TH!S JUMPER
CONNECTION
THE FURNACE
NEEDS
FAN ENABLE
FOR HEATING
OPERATION.
6.
THIS JUMPER
REQUIRED
STAGE
FURNACES,
7. BONNET
I
THERMOSTAT
REQUIRED
FOR
APPLICATIONS,
HEAT PUMP
O,D, SEO_ON
8.
_ bE __:::,\T
OIL
ONLY
MODEL
ONLY
IF
SIGNAL
FOR
2
TRTI248
FURNACE
]D LOOK OUr GAS _URNACE
A] OUTDOOR
]EMPERATURES
ABOVE 00] SEE POINT, DO NO]
CONNEC[ WJRE [O [HERMOSfA1
IERMINAL
'_"
AND TERMINAL "I" ON DO[.
L
TAYPLUSIO3AI___NOTE 4
]
LEGEND
_R
= _ME
DELAY RELAY
MODEL RLY1BB4
ODT=
K
=
BT
RELAY
MODEL
RLY1663
OUTDOOR
MODEL
= BONNET
MODEL
THERMOSTAT
TAYSTATBBOA
THERMOSTAT
THT1248
TO.O.E.
SUPPLY PER
LOCAL CODES
From Dwg. 21C149455,
PAGE 6
Rev. 2
Pub, No, 18-BC29D8-6
INSTALLER'S GUIDE
TWR012=060
OUTLINE
DRAWING
NOTE:ALL
SERVICE
ELECTRICAL
COMPONENTS
PER
PREVAILING
PANEL
iN MM (INCHES).
AND
REFRIGERANT
CLEARANCES
CODES.
_TOP
28.G
[I
I/8]
D]A.
K.O.
22.2
(7/8}
D]A.
HOLE
ELECTRIC
POWER
22.2
HOLE
(7/8]
LOW
PRESSURE
I/4"
FLARE
DIMENSIONS ARE
DISCHARGE
AREA SHOULD
BE
UNRESTRICTED
FOR AT LEAST
FIVE
(5}
FEET
ABOVE
UNIT.
UNIT
SHOULD BE
PLACED
SO ROOF RUN OFF WATER
DOES NOT POUR DIRECTLY
ON UNIT,
AND SHOULD BE AT LEAST
305 (12"]
FROM WALL AND ALL
SURROUNDING
SHRUBBERY
ON TWO SIDES.
OTHER
TWO SIDES
UNRESTRICTED.
WITH
D[A.
TAPS
F[TT[N
210
(4 3
]
GAB
LINE
SERVICE
VALVE,
"D'O.D.
FEMALE
BRAZED
CONNECTION
WITH
I/4"SAE
PRESSURE
TAP
FITTING.
LIQUID
LINE
SERVICE
"E"O.D.
FEMALE
BRAZED
CONNECTION
WITH
I/4"
PRESSURE
TAP
FITTING.
FIG.
PRESSURE
FLARE
VALVE,
SAE
FLARE
MODELS
FIG.
A
B
C
D
E
TVVR012C
1
24-3/4
23-5/8
20
5/8
1/4
TVVR018C
1
24-3/4
23-5/8
20
5/8
1/4
TVVR024C
1
24-3/4
28-!/4
24-5/8
3/4
5/18
TVVR030C
1
32-3/4
28-!/4
24-5/8
3/4
5/18
TVVR036D
1
32-3/4
28-!/4
24-5/8
7/8
3/8
TVVR042C
2
37
32-7/8
28 3/4
7/8
3/8
TVVR048D
2
32-3/4
32-7/8
28 3/4
!-!/8
3/8
TVVR060D
2
37
38-7/8
34-3/4
!-!/8
3/8
1
TAPS
I/4"
FLARE
FITTING
228
GAS LINE BALL SERVICE
VALVE,
_BALL
1/4 TURN "D" O.D. FEMALE
BRAZED
CONNECTION
WITH 1/4"
SAE FLARE PRESSURE
TAP FITTING
(81
"-LIQUID
LINE
SERVICE
O.D.
FEMALE
BRAZED
CONNECTION
WITH
IZ4"
FLARE
PRESSURE
TAP
VALVE,
"E"
41
11_
]_
FIG.
2
SAE
FITTING.
From Dwg. 2ID147562,
Pub. No. 18-BC29D8-6
Rev. 6
PAGE 7
I STALLER'S GUIDE
CHECKOUT
After installation
following list:
has been completed,
1. Refrigerant
it is recommended
that the entire system
be checked
against the
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4. Have passages through masonry been sealed? If mortar is used, prevent mortar from
coming into direct contact with copper tubing .....................................................................................
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5. Indoor coil drain line drains freely.
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8. Thermostat thermometer
is accurate. Check against a reliable thermometer.
Adjust
per instructions with thermostat ..........................................................................................................
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9. Is correct
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2. Suction
Line, Leak checked
PROCEDURE
Lines and Fittings properly
3. Have all Refrigerant
6. Supply
..........................................................................................................
registers
insulated
Lines been secured
......................................................................................
and isolated
properly?
Pour water into drain pan .............................................................
and return grilles open and unobstructed
7. Return air filter installed
........................................................
.................................................................
......................................................................................................................
speed tap being used?
(Indoor blower
SYSTEM
motor)
....................................................................
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 offfor 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 d the designated lines, in Step 2.
2. Start-Up Time
A.M./P.M.
Time Lapse
Power Applied Time
Hours
A.M./P.M.
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 superheat charging, or pressures
depending on flow control.
4. Except as required for safety while servicing:
SUPPLEMENTARY
HEATERS CHECKOUT
DOES HEATER
1. Be sure the fused disconnect
3. Check fuses for proper size per nameplate
NOTE:
OPERATION
SYSTEM.
DISCONNECT
PROCEDURES,
REQUIRE A SEPARATE
SWITCH.
IF USED
CIRCUIT?
switch is "OFF," and safety label (if any) is attached ................................
2. Check on field wiring for sound connections
4. Check control box panel --
DO NOT OPEN SYSTEM
and grounding
specifications
according
to codes ....................................
.....................................................................
in place and secured ..................................................................................
OF HEATERS
MUST BE CHECKED
DURING THE OPERATION
6200
Technical Literature - Printed in U.S.A.
]
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CHECK OF THE TOTAL
The Trane
PAGE 8
[
Troup
Company
Highway
Tyler, TX 75707
Pub. No. 18-BC29D8-6
P.I.
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