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THERMOSTAT HEAT ANTICIPATION SETTING 0.4 AMP ELECTRIC HEAT
C
W1
O
Y1
RL
T
EC
W1
GOY1 RL
T
COMMON
ELECTRIC HEAT
REVERSING VALVE
COMPRESSOR
POWER
SERVICE LIGHT
THERMISTOR
Y2
2ND STAGE COMPRESSOR
Y2
CIRCUIT 1
CIRCUIT
BREAKERS OR
TERMINAL
BLOCK
1
4
7
3
6
9
CB1
CIRCUIT
BREAKER
L3 CONNECTION USED ON Y VOLTAGE 3 PHASE ELECTRIC HEATERS ONLY.
STATS.
Y2 USED ONLY WHEN TWO SPEED COMPRESSOR IS USED
(HP21).
COMMON USED ONLY ON SOME THERMOSTATS.
USING SERVICE LIGHT OPTION (S54) WITH SOME ELECTRONIC THERMOSTATS MAY REQUIRE
MOVING S54 COMMON WIRE TO Y1 IN HEAT PUMP UNIT.
EMERGENCY HEAT RELAY (USED ONLY IF OUTDOOR T'STAT IS USED) FIELD PROVIDED AND
INSTALLED NEAR INDOOR UNIT. 24VAC 5VA MAX NEC/CEC CLASS 2
MOVE JUMPER BETWEEN TERMINALS “R' AND “W2.”
FACTORY INSTALLED JUMPERS
FIGURE 12. Typical Field Wiring – Heat Pump Applications with Electric Heat
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