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Fig. 10—control connections – Carrier 50NQ User Manual

Page 8

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THERMOSTAT

8 SUBBASE

(SEE BELOW)

&

&

0-

0

-

B-

[£>

0-

UNIT

CONTROL WIRING

TERMINAL BOARD

0

)

-

0

)

<8>

-B)

COOLING AND ONE-STAGE HEATING

(without Electric Heater)

THERMOSTAT

a SUBBASE

UNIT

CONTROL WIRING

TERMINAL BOARD

ODT — Outdoor Thermostat

HR — Heater Relay

COOLING AND TWO-STAGE HEATING

(Unit equipped with Electric Heater, Supplemental

Heat, One Outdoor Thermostat)

THERMOSTAT

a

SUBBASE

UNIT

CONTROL WIRING
TERMINAL BOARD

THERMOSTAT

a SUBBASE

UNIT

CONTROL WIRING

TERMINAL BOARD

COOLING AND TWO-STAGE HEATING

(Unit equipped with Electric Heater, Supplemental

Heat, No Outdoor Thermostats)

HR — Heater Relay

ODT — Outdoor Thermostat

COOLING AND TWO-STAGE HEATING

(Unit equipped with Electric Heater, Supplemental

Heat Relay, Two Outdoor Thermostats)

Fig. 10—Control Connections