TRANE Air Conditioner/heat Pump(outside Unit) Manual L0905064

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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18-BC59Dl-1

Pumps
2TWR3
ALL phases

of this installation

IMPORTANT
-- This Document
pack upon completion of work.

must

comply

is customer

with

NATIONAL,

property

STATE AND LOCAL

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 for the purchaser's
purposes, the matter
should be referred to your installing dealer or local distributor.

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
any liability in connection with its use.
2,

Trane approved

The benefits of installing approved matched systems are
maximum efficiency, optimum performance and best
overall system reliability.
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
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 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 obstructed
preventing
draining
of defrost
water.

Please

return

to service information

5 FT. ABOVE UNiT -- UNRESTRICTED

iiiii

A. GENERAL

NOTICE:
Trane has always recommended installing
matched indoor and outdoor systems.

with this unit.

CODES

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 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, ldtchen, 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.

B. LOCATION AND PREPARATION
OF THE UNiT
1. When removing unit from the pallet, notice the tabs on
the basepan. Remove tabs by cutting with a sharp tool as
shown on page 2, Figure 2, and slide unit off of pallet.
2,

The unit should be set on a level support pad at least
as large as the unit base pan, such as a concrete slab.
If this is not the application
used please refer to
application
bulletin "Trane XR-APG**-EN"
(* denotes
latest revision number).

The support pad must NOT be in direct contact with any
structure.
Unit must be positioned a minimum of 12"

|nstaI|er's

Guide

BASEPAN

NOTE:
Large diameter tubing will be very difficult
has been shaped.

TAB REMOVAL

EMOVE

BS AS I
HOWNJ

Determine
ant tubing

to rebend once it

the best starting point for routing the refriger-- INSIDE OR OUTSIDE THE STRUCTURE.

4. Provide a pull-thru hole of sufficient
liquid and gas lines.
5. Be sure the tubing

is of sufficient

size to allow both

length.

6. Uncoil the tubing -- do not kink or dent.
from any wall or surrounding
shrubbery to insure
adequate
airflow. Clearance
must be provided in front
of control box (access panels) and any other side
requiring
service access to meet National
Electrical
Code. Also, the unit location must be far enough away
from any structure to prevent excess roof run-off water
from pouring directly on the unit. Do not locate unit(s)
close to bedroom(s).
4. The top discharge area must be unrestricted
five (5) feet above the unit.

for at least

5. When the outdoor unit is mounted on a roof, be sure the
roof will support the unit's weight. Properly selected
isolation is recommended
to prevent transmission
to the
building structure.
6. The maximum length of refrigerant
lines from outdoor
to indoor unit should NOT exceed sixty (60) feet.
7. If outdoor unit is mounted above the air handler, maximum lift should not exceed sixty (60) feet (suction line). If
air handler is mounted above condensing unit, maximum lift should not exceed sixty (60) feet (liquid line).

8. Locate and install indoor coil or air handler in accordance with instruction included with that unit.

C. INSTALLING

REFRIGERANT

units have provisions

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
they should be insulated
and isolated.

Pressure taps are provided on the service valves
unit for compressor suction and liquid pressures.

of outdoor

refrigerant
line sets
bend, depending upon
be thoroughly checked
sets.

d. Isolate the lines from all ductwork.

D. SERVICE

VALVE OPERATION

BRASS LIQUID AND GAS LINE SERVICE VALVES
The Brass Liquidand Gas Line ServiceValves are 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).

BRASS GAS LiNE BALL SERVICE VALVE
The Brass Gas Line 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.
Figure 4.

The gas line must always be insulated.

The units are factory charged with the system charge
required when using fifteen (15) feet of rated connecting
Unit nameplate
charge is the same.

1. Determine

the most practical

line.

See

LiQUiD LiNE SERVICE VALVE
ROLLED

In scroll compressor applications, dome temperatures
may be hot. Do not touch top of compressor, may cause
minor to severe burning.

Final refrigerant
charge
adjustment
the Charging Information
in the outdoor
and on page 6.

a wall or sill,

Extreme caution should be exercised when opening the
Liquid and Gas Line Service Valves. Turn valve stem
counterclockwise
only until the stem contacts the rolled
edge. (See Figures 3 and 5) No torque is required.

for braze connections.

The indoor end of the recommended
may be straight or with a 90 degree
situation requirements.
This should
out before ordering refrigerant
line

8. To prevent a noise within the building structure due to
vibration transmission
from the refrigerant
lines, the
following precautions
should be taken:

LINES

If using existing refrigerant lines make certain that all
joints are brazed, not soldered.
Condensing

7. Route the tubing making all required bends and properly
secure the tubing before making connections.

CAP_

SEL"Ic
S'DE

EDGE TO

CAPTIVATE

STEM

"EX"EADgEM

is necessary.
Use
unit Service Facts

way to run the lines.

2. Consider types of bends to be made and space
limitations.
© 2005 American Standard inc. All Rights Reserved

SERVICE
_
PORT

/
--

/
LIQUID LINE
CONNECTION

18-BC59D1-1

|nsta||er's

GAS LINE BALL SERVICE VALVE
CAP_-___8

Guide

GAS LINE SERVICE VALVE
CAPTIVATE

1/4TURN
ONLY
COUNTERCLOCKWISE
FOR FULL OPEN

EDGE

ROLLED
I

_POSITION

UNIT

SIDE

HEX HEADED
VALVE
SYSTEM

UNIT SIDE
OF VALVE

SERVICE_
PRESSURETAPPORT

STEM

CAP

PORT

GAS LINE CONNECTION
GAS

LINE

CONNECTION

CAP

other leak-checking
methods to see that all field joints
leak-free! If not, release
pressure;
then repair!

__
BODY

SYSTEM EVACUATION

coou . .

NOTE:
Since the outdoor unit has a refrigerant
liquid line valves must remain closed.

BRAZING REFRIGERANT LINES
1. Remove lower access cover to access service valves.

3. Cut and fit robing,

minimizing

4. Insulate

gas line and its fittings.

the entire

5. Do NOT allow uninsulated
contact with bare gas line.

copper stub
of stub tubes

the use of sharp

90 ° bends.

liquid line to come in direct

enters pressure

tap

NOTE:
Precautions should be taken to avoid heat damage to
basepan during brazing. It is recommended to keep the
flame directly off of the basepan.
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
LEAK CHECK

good brazing

techniques.

IMPORTANT:
Replace pressure tap port valve core before attaching hoses for
evacuation.
After the 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 350-400 psi. Use soap bubbles or
18-BC59D1-1

2. Attach appropriate
hoses from manifold
and liquid line pressure taps.

gauge to gas

NOTE:
Unnecessary switching of hoses can be avoided and cornplete 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

6. 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.
NOTE:
Use care to make sure that no moisture
port, while wet rag is being used.

charge, the gas and

1. Upon completion of leak check, evacuate the refrigerant
lines and indoor coil before opening the gas and liquid
line valves.

CORE

2. Before brazing, remove plugs from external
tubes. Clean internal and external surfaces
prior to brazing.

are

hose of manifold

4. Evacuate until the micron
350 microns.

gauges

to vacuum

gauge reads no higher

pump.
than

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.

If vacuum gauge does not rise above 500 microns
one (1) minute, the evacuation should be complete.

7. With 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.

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 open liquid line service
valve. A 1/4" Open End or Adjustable wrench is required to
open gas line valve. A 3/4" Open End wrench is required to
take off the valve stem cap.
9. The liquid line shut-offvalve
can now be opened. Remove
shut-off valve cap. Fully insert hex wrench into the stem
and backout counterclockwise
until valve stem just
touches rolled edge (approximately
five [5] turns)
observing WARNING statement
on page 3. See Figure 3.
3

|nstaI|er's

Guide

10. Replace liquid service pressure tap port cap and valve
stem cap. These caps MUST BE REPLACED
to
prevent leaks. Replace valve stem and pressure tap cap
finger tight, then tighten an additional
1/6 turn.

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.

11. The gas valve can now be opened. For a ball type gas
valve, open the gas valve by removing the shut-offvalve
cap and turning the valve stem 1/4 turn counterclockwise, using 1/4" Open End or Adjustable wrench. See
Figure 4. For brass gas line service valve opening, follow
9 and 10 above. See Figure 5.

FAULT IDENTIFICATION
A fault condition is indicated by the flashing light on the
defrost control inside the heat pump control box.

12. The gas valve is now open for refrigerant
flow. Replace
valve stem cap to prevent leaks. Again, these caps
MUST BE REPLACED
to prevent leaks. Replace valve
stem and pressure tap cap finger tight, then tighten an
additional 1/6 turn. See Figure 3.

PiN IDENTIFICATION

If refrigerant
lines are longer than 15 f_et and/or a different
size than recommended,
it will be necessary to adjust system
refrigerant
charge upon completion of installation.
See unit
Service Facts.

E. ELECTRICAL

CONNECTIONS

When installing or servicing this equipment, ALWAYS
exercise basic safety precautions to avoid the possibility
of electric shock.
1. Power wiring and grounding
with local codes.

of equipment

2. Power supply must agree with equipment
3. Install
4. Ground

a separate
the outdoor

disconnect

must

comply

(See Figure 6.)

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

unit.

6. The use of color coded low voltage wire is recommended
to simplify connections between the outdoor unit, the
thermostat
and the indoor unit.

DEFROST CONTROL CHECKOUT
Normal operation requires:
a. LED on board flashing
R &B

c. 24V AC between

Y & B with unit operating

If a defrost
information

when FRC_DFT
pin.

control problem is suspected,
in control box.

pin is shorted

refer to the service

Do NOT connect 24V AC to T1 (ODS-A) terminal.
thermistor WILL BE BLOWN.

SIZE

ODS=A

PiN iDENTiFiCATiON
z
0

24 VOLTS

0
o

MAX. WIRE

I
lg0

LENGTH

18 AWG

150 FT

16 AWG

225 FT.

14 AWG

300 FT.

7. Table i 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).

CONTROL

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 dift_rence 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
4

I time/second.

b. 24V AC between

Table 1 -- NEC Class II Control Wiring

F. DEFROST

unit per local code requirements.

5. Provide flexible electrical conduit whenever vibration
transmission
may create a noise problem within the
structure.

WIRE

to this pin

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

d. Defrost initiation
TEST_COMMON

nameplate.

switch at the outdoor

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.

aa ,_
G. COMPRESSOR

START UP

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 (where used). Do not change the
Thermostat
System Switch until power has been applied for
one (1) hour. Following this procedure -will prevent potential
compressor overload trip at the initial start-up.

H. OPERATIONAL AND
CHECKOUT PROCEDURES
Final phases of this installation
are the unit Operational
Checkout Procedures which are found in this instruction

and
on

18-BC59D1-1

|nsta||er's
page 8. To obtain proper performance,
all units must be
operated and charge adjustments
made in accordance with
procedures found in the Service Facts.

I. ELECTRIC

Guide

M. TROUBLESHOOTING
TROUBLESHOOTING

CHART

-- WHAT TO CHECK

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.

SYSTEMFAULTS

REFRIGERANT
CIRCUIT
HeadPressure
TooHigh

d. START CONTROL

HeadPressure
TooLov,,

Some models have quick start components which are fhctory
installed. For models that do not have factory installed start
components, provisions are made for a field installed start kit
accessory. When adding an accessory, follow the instructions
provided with the kit.

SuctionFresst_re
TooHigh

K. OUTDOOR

Oo_npressor
&O0 Fan
Wont Start

THERMOSTAT

An outdoor thermostat
TAYSTAT250B may be field installed.
For data, see wiring diagram attached to unit and instruction
sheet packaged with outdoor thermostat.

L. SEACOAST

SuctionFresst_re
TooLov,,
LiquidReNigEloodback
TXVl
ID CoilFrosting
Oo@ressorRul_s
Inadequate
or NoOooling_Htg
ELECTRICAL

Icl

IFIF

Flsl

Isl

I I

I_1
I_1
I_1
I_1
I_1
I_1

II
II
II
II
II

FIFI
F I Is Pills RII
FIFIFII S IRI;
Eli II PIRI
R II
Eli _I_IF IRI
Eli _1_1
F II RII
Ells II RIsI_

IHI

PII

Rlsls

sll

Oo_pressorWillNot Stari
ButO0 Fall Rt_ns
O0 Fall Won'tStari
Oo_npressor
HumsBt_tWon'tRtari
Oo_npressor
Cycleson IOL

SALT SHIELD

ID Rlov,,er
Won>tStart

Units installed -within one mile of salt water including
seacoasts and inland waterways,
require the addition of
BAYSEAC001 (Seacoast Kit) at the time of installation.

DEFROST
UnitWon'tInitiateDefrost
DefrostTerminates
onTime
UnitIcing Up

IMPORTANT:
See Limited Warranty information in Use and Care Manual.

TYPICAL
AIR HANDLE

T ' S[ A1

C - Cooling

H - Heating

P - Primary Causes

S - Secondary Causes

* - 3 Phase0nly

FIELD HOOK=UP DIAGRAMS

HEAT PUMP

T 'STAT

HE/iT

PUI4P

_'"R

BK(X?:

_...FI

4?
---J_---B

i.... B

E3--

NOTE 6

•===dff--'B R ( )

I',10/

l.... T
PRINTED FROIf BI52904P03
Notes:
1. Be sure power supply agrees with equipment nameplate.
2. Power wiring and grounding of equipment must comply with local codes.
3. Low voltage wiring to be No. 18 AWG minimum conductor.
4. ODT-B must be set lower than ODT-A.
,5. If outdoor thermostats (ODT) are not used, connect W1 to W2 and W3.
6. N/A to programmable thermostat.

18-BC59D1-1

LEGEND
.....

FACTORY WIRING
FIELD WIRING

|nstaIIer's
SUBCOOMNG

Guide
CHARGING

IN COOLING

ABOVE 55°F OD AMBIENT

The Trane company has always recommended
installing
Trane approved matched indoor and outdoor systems.
All 13 SEER Trane split systems
TXV indoor systems.

are ARI rated

R-22 SUBCOOLING

with only

The benefits of installing approved indoor and outdoor split
systems are maximum efficiency, optimum performance
and
the best overall system reliability.

CHARGING

DESIGN SUBCOOLING

LIQUID
TEMP.
(°F)

TABLE

VALUES (OF)
12

LICUID LINE PRESSURE

14
(psi)

100

102

105

109

107

111

115

119

117

121

126

130

128

132

137

141

3. At start-up, or whenever charge is removed or added, the
system must be operated for a minimum 20 minutes to
stabilize before accurate measurements
can be made.

139

144

148

153

151

156

161

166

4. Measure
Pressure

163

168

174

179

176

182

187

193

190

196

202

208

205

211

217

223

100

220

226

233

239

105

236

243

249

256

110

253

260

267

274

115

271

278

285

293

120

289

297

305

313

125

309

317

325

333

The following charging methods
systems with indoor TXVs.

are therefore

prescribed

for

1. Subcooling (in the cooling mode) is the _
recommended
method of charging above 55°F ambient temperatures.
2. For best results - the indoor temperature
should be kept
between 70°F to 80°F. Add system heat if needed.

Liquid Line Temperature
at service valves.

and Refrigerant

5. Determine
total refrigerant
line length,
if indoor section is above the condenser.

and height

6. Determine
the Design Subcool Charging
from the unit nameplate.

(lift)

Temperature

7. Locate this value in the appropriate
column of the
Subcooling Charging Table. Locate your liquid line
temperature
in the left column of the table, and the
intersecting
liquid line pressure under your nameplate
subcool value column. Add refrigerant
to raise the pressure to match the table, or remove refrigerant
to lower
the pressure. Again, wait 20 minutes for the system
conditions to stabilize before adjusting charge again.
8. When system is correctly charged, you can refer to
System Pressure Curves (in Service Facts) to verify
typical performance.

SUBCOOL

CHARGING

TABLE

CORRECTIONS

FOR LINE LENGTH

AND RISE

h-m
Zm

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TRANE Air Conditioner/heat Pump(outside Unit) Manual L0905064

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