Fig. 5—24-volt control circuit connections – Carrier 38TMA User Manual
Page 5
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ARRANGEMENT C-ONE TRANSFORMER
(COOLING AND TWO-STAGE HEATING)
*IFR AND IFM ARE LOCATED IN FURNACE ON HEATING-COOLING APPLICATIONS. IF
ACCESSORY IFR IS REQUIRED FOR COOLING-ONLY APPLICATIONS, LOCATE (IFR) IN FAN
COIL.
FIELD SPLICE
______FIELD WIRING
______ FACTORY WIRING
(COOLING AND ONE-STAGE HEATING)
C
-CONTACTOR
HC
-HEATING CONTROL
IFM
-INDOOR FAN MOTOR
IFR
-INDOOR FAN RELAY
TRANS
-TRANSFORMER
NOTES: 1. REFER UTO UNIT WIRING LABEL FOR WIRE COLORS: C TO G AND C TO Y
CONNECTIONS.
2. N.E.C. CASS 2, 24V CIRCUIT MIN. 40VA REQUIRED; 60VA REQUIRED
FQR 050 AND 060 SIZE UNITS OR UNITS INSTALLED WITH LIQUID UNE
SOLENOID VALVE.
A91058
Fig. 5—24-Volt Control Circuit Connections