Page 19
TPA*H4 SERIES
Figure 14. Typical 460 VAC Unit Wiring Diagram
WIRING CONNECTIONS
1. Install line voltage power supply to unit from a properly sized disconnect switch. Any excess high voltage field wiring
should be trimmed or secured away from the low voltage field wiring.
R
C
W1
Y1
O
G
R
C
W1
W2
W3
G
REVERSING VALVE
THERMOSTAT
INDOOR UNIT
R
C
W1
Y1
O
OUTDOOR UNIT
POWER
COMMON
FIRST STAGE
AUXILIARY. HEAT
INDOOR BLOWER
COMPRESSOR
(SOME CONNECTIONS MAY NOT APPLY. REFER
TO SPECIFIC THERMOSTAT AND INDOOR UNIT.)
POWER
COMMON
FIRST STAGE
AUXILIARY. HEAT
Figure 15. TPA*H4 and Blower Unit Thermostat
Designations
R
C
W1
Y1
O
G
R
C
W1
W2
W3
G
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
E
R
C
W1
Y1
O
EMERGENCY
HEAT RELAY
OUTDOOR T’STAT
(SOME CONNECTIONS MAY NOT APPLY. REFER TO
SPECIFIC THERMOSTAT AND INDOOR UNIT.)
REVERSING VALVE
POWER
COMMON
FIRST STAGE
AUXILIARY. HEAT
INDOOR BLOWER
COMPRESSOR
POWER
COMMON
EMERGENCY HEAT
FIRST STAGE AUXILIARY.
HEAT
Figure 16. Outdoor Unit and Blower Unit Thermostat
Designations (with Auxiliary Heat)
