Owner's manual

FACTORY WIRING
FIELD WIRING
— • •—•- MECHANCIAL CONNECTIONS
THERMOSTAT
34427 D57(872F)
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W1 W2 4 G Y1 Y2 R F X
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SUBBASE
34427 D59(Q672B)
UNIT
LOW-VOLTAGE
TERMINAL STRIP
Figure 3-Field Wiring Low-Voltage, Models 450H-, 180R-, 240R-379
1. Blower Motor
2. Contactor
3. Cooling Fan Relay
4. Delay Heating Relay
5. Transformer
6. Gas Pressure Switch
7. Resistor
8. 733 Automatic Pilot
9. Limit Switch
10. 1st Stage Gas Valve
11. Secondary Limit Switch
12. 2nd Stage Gas Valve
13. Motor Overloads
39379D35
Figure 4-450-379H Series C, 208 or 230 Volt, 60 Hertz, 3 Phase
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