White Rodgers 1F92W-51 Installation & Operation Manual page 13

NOTE
The following wiring diagrams show typical terminal iden-
tification and wiring. For proper installation, refer to the
original manufacturers' instructions.
Thermostat
Control
Circuit
THERMOSTAT
O B Y1 G E2 E1 W1 W2 C R
SYSTEM
Emergency
Changeover
Heat
Fan
Relay
Energized
Relay
Relay
Switched
In Heat
Stage 2
Hot
Output
24 VAC 120 VAC
Emergency
Heat
Changeover
Compressor
Neutral
Relay
Energized Relay
Contactor
Constant TRANSFORMER
Stage 1
In Cool
Stage 1
Output
Figure 4. Typical wiring diagram for single transformer systems
13