Fig. 4 — control circuit field wiring (38gr006) – Carrier 38BA User Manual
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THERMOSTAT SUBBASE
HH93AZ042 OR
CR
FS
HC
IFM ■
IFR -
Trans ■
applications If accessory IFR is required for cooling only
applications, locate I FR in fan coil.
- Control Relay (10 va)
- Fan Switch
- Heating Control
- Indoor Fan Motor
- Indoor Fan Relay
- Transformer
Field Splice
---------- Field Wiring
---------- Factory Wiring
*Connect FS to low-speed indoor fan terminal when 2-speed fan is
used
COOLING AND ONE-STAGE HEATING
Fig. 4 — Control Circuit Field Wiring (38GR006)
NOTES:
1 Suction line is connected to coil on same side as the entering air
2
For coils having only one section, use upper section piping; for
coils having 2 sections, use upper and middle section piping
3
Lower section is first on and last off
> Fig. 5 — Suction Line Piping to Unit
with 3 Section Coil Split
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