Carrier 50RQ900291 User Manual
Page 3
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ROOM
THERMOSTAT
FIELD CONTROL WIRING
(TO BASE UNIT)
HOLE FOR FIELD POWER
SUPPLY OR UNITS WITH
FACTORY INSTALLED
ELECTRIC HEAT OPTION
CAPILLARIES
FIELD CONTROL WIRING
(FROM CONDITIONED SPACE)
Fig. 3 — Accessory Electric Heat Control Box Installation
Condenser End View
BASE UNIT
CONTROL BOX
EMERGENCY HEAT
CONTROL BOX
HR
— Heater Relay
OAT
— Outdoor Air Thermostat
__^ Field Splice
------------ Factory Wiring
------------ Field Wiring
NOTES
1
Remove brown wire with marker [Tlfrom C in base unit control box and field
splice to PI in emergency heat control box for all operations
2
Foi 2 outdoor air thermostat operation, remove both violet wires from W2 in
base unit control box and field splice to H2 in emergency heat control box
Fig. 4 — Emergency Heat Wiring Connection Diagram, 50RQ,PQ006