Trane 4TWR3 Installer's Manual page 5

|nstaIIer's Guide
I. ELECTRIC HEATERS
Electric heaters, if used, are to be installed in the air han-
dling device according to the instructions accompanying the
air handler and the heaters.
J. START CONTROL
Some models have quick start components which are
thctory installed. For models that do not have thctory
installed start components, provisions are made tbr a field
installed start kit accessory. When adding an accessory,
tbllow the instructions provided with the kit.
K. OUTDOOR THERMOSTAT
An outdoor thermostat TAYSTAT250B may be field installed.
For data, see wiring dia_'am attached to unit and instruc-
tion sheet packaged with outdoor thermostat.
L. SEACOAST SALT SHIELD
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.
IMPORTANT:
See Limited Warranty information in Use and Care Manual.
M. TROUBLESHOOTING
TROUBLESHOOTING CHART -- WHAT TO CHECK
SYSTEMFAULTS
REFRIGERANT CIRCUIT
Head Pressure Too High
Head Pressure Too Lov,,
Suction Pressure Too Nigh
Suction Pressure Too Lov_
Liquid Refdg Floodback (TXV)
ID Coil Frosting
Co@ressor Runs
Inadequate or No Cooling Htg
ELECTRICAL
Co@ressor & OD Fan
Wont Start
Compressor Will Not Star_
But OO Fan Runs
OD Fan Won't Start
Compressor Hums But Won't Start
Compressor Cycles on IOL
ID £1ov_erWont Start
DEFROST
Unit Won't Initiate Defrost
Defrost Terrnina_es on TRne
Unit Icing Up
C - Cooling H - Heating
Icl
I_I
I_I II
I_I II
I_I II
I_I II
I_I II
IHI I I
P - Primary Causes
IPIP Plsl
PIPI P I IR
II II PIPIPII R
II II PII II
II II PII sIsIP
II II PII sl_l R
II II PIl_ II
II II PII II
S - Secondary Causes { - 3 Phase 0nly
Isl II
RI_IR PII
_IRI R II
ISI _11
II RII
_IRIR RII
RIsIs SII
TYPICAL FIELD HOOK=UP DIAGRAMS
T'STA/
A R HANDLER
HAT
PUMP
_T_
NOTE 6
Notes:
L........ B
SK(X?
PRINTED FROM BIS2904P04
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. If t-stat has a "T" terminal jumper it to the "B" terminal.
T 'STAT
NOTE 6
VARIABL SPEED
AIR HAND[ ER
HEAT PUMP
BK(X?,)
.... i
....................................... i T
:........................ _X ....
0
PRINIED I:I:/OM BI52934P05
LEGEND
..... FACTORY WIRING
FIELD WIRING
18-BC51 D1-5 5