Fig. 9—control connections – Carrier 50QQ User Manual
Page 7
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THERMOSTAT
8 SUBBASE
(SEE BELOW)
0-
&
B-
0
-
0
-
0
-
UNIT
CONTROL WIRING
TERMINAL BOARD
THERMOSTAT
a SUBBASE
0)
^0
-
0
)
COOLING AND ONE-STAGE HEATING
(without Electric Heater)
UNIT
CONTROL WIRING
TERMINAL BOARD
ODT—Outdoor Thermostat
Assose
HR —Heater Relay
COOLING AND TWO-STAGE HEATING
(Unit equipped with Eiectric Heater, Suppiemental Heat,
One Outdoor Thermostat)
THERMOSTAT
a
SUBBASE
UNIT
CONTROL WIRING
TERMINAL BOARD
THERMOSTAT
a SUBBASE
COOLING AND TWO-STAGE HEATING
(Unit equipped with Electric Heater, Supplemental Heat,
No Outdoor Thermostats)
UNIT
CONTROL WIRING
TERMINAL BOARD
SHR—Supplemental Heat Relay
HR —Heater Relay
ODT—Outdoor Thermostat
A88054
COOLING AND TWO-STAGE HEATING
(Unit equipped with Eiectric Heater, Supplemental
Heat Relay, Two Outdoor Thermostats)
Fig. 9—Control Connections