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Section 4. Terminal Locations and Identification
Refer to the following diagrams for descriptions
of each terminal.
Terminal
KEY
Identification
A
Dual Fuel Switch
B
Thermostat
Optional Remote
C
Sensors
D
HVAC System
6
D
A
NORM
DUAL
Dual Fuel
Switch
0
SOV
Data
Y1 Stg1
Y2 Stg2
A
DUAL
NORM
Dual Fuel
Switch
D
R B
0
SOV
Data
Hot
Com
Y1 Stg1
Thermostat
Y2 Stg2
and Indoor Unit
W1 Stg1
W2 Stg2
W3 Stg3
Comm
Fan
G
BK PWM
Bit Master
Hum
Hum
Aux1
Aux1
Aux2
Aux2
Relay Panel
A
Switch Position
NORM
DUAL
This switch ships in the NORM position by
default. Refer to the following section for com-
D
R B
plete Field Wiring Diagrams.
Hot
Com
Thermostat
and Indoor Unit
B
RS
RS
C
ODT
ODT
Dual Fuel Switch
Description
For HP or conventional
Heat/Cool systems.
For dual fuel systems.
18-HD68D1-3
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