Trane 4TCC4036A1000A - Control Wiring (Class II)

18-EB30D1-1G-EN
19
Table 10. Field Wiring Diagram
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B
G
Y
W1
W2
R
COMMON
FAN
COMPRESSOR
HEAT FIRST STAGE
HEAT SECOND STAGE
24V
(GR)
(WH)
(WH)
B
G
Y
W1
W2
R
B
G
Y
W1
W2
R
3 PH
POWER
UNIT
NOTE 1,8
3 PH
POWER
HEATER
1 PH
POWER
1 PH
POWER
FIELD PROVIDED
JUMPER
NOTE 6
TO ECONOMIZER
FACTORY PROVIDED
FIELD INSTALLED WIRES
FIELD
INSTALLED
JUMPERS
FIELD
INSTALLED
JUMPERS
FIELD
INSTALLED
JUMPERS
756977i2
FIELD PROVIDED
FIELD CONNECTED
WIRED
UNIT HEATER AREA
UNIT CONTROL
BOX
ELECTRIC
HEATER
CONTROL
BOX
HEATER
FUSES
UNIT
FUSES
GROUND
WIRE
UNIT LOW
VOLTAGE AREA
UNIT LOW
VOLTAGE AREA
SINGLE POWER
ENTRY
UNIT LOW
VOLTAGE AREA
3 PH
POWER
1 PH
POWER
BAY24X042
TYPICAL THERMOSTAT
TYPICAL THERMOSTAT
TYPICAL 2-STAGE
THERMOSTAT
UNIT LOW
VOLTAGE AREA
NOTE 10
ELECTRIC
HEATER
CONTROL
BOX
UNIT CONTROL BOX
UNIT HEATER AREA
TYPICAL THERMOSTAT
TO COMPR.
CONTACTOR
SPE
ACCESSORY
KIT
GROUND
WIRE
POLARIZED
PLUG
W1
W2
(WH)
(WH)
SEE SPEK INSTALLER'S GUIDE
FOR ALL OTHER EXAMPLES
CCoonnttrrooll WWiirriinngg((CCllaassssIIII))
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
grommet on the unit. See Figures 1–6 for the control
entry (24V Entry) location. Make connections as shown
on Table 10, p. 19
Do not short thermostat wires since this will damage
the control transformer.
Refer to the table below for recommended wire sizes
and lengths for installing the unit thermostat. The total
resistance of 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.
SStteepp44——UUnniittIInnssttaallllaattiioonn