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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