Nordyne M1B, M1G Pilot Bracket, Sequence Of Operation For Stand- Ing Pilot, Standing Pilot Valve

!WARNING:

Close hinged fire door. If fire door is open or spring is broken it may allow products of combustion into the living space by the furnace blower resulting in possible asphyxiation.

In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.

TO TURN OFF GAS TO APPLIANCE: a. Set the thermostat to the lowest setting.

b. Turn off all electric power to the appliance at breaker or fuse box, before servicing.

c. Remove the furnace door.

d. Push in the gas control lever slightly and move to the left to “OFF.” DO NOT FORCE.

e. Replace the furnace door.

SEQUENCE OF OPERATION FOR STAND- ING PILOT

aOn a call for heat, the thermostat contacts close, supplying 24 VAC to the gas valve.

b. When the gas valve is energized it steps open at a reduced flow and opens fully after approximately 14 seconds.

c.When the call for heat is satisfied the thermo- stat contacts open, the gas valve shuts off gas flow.

SEQUENCE OF OPERATION FOR STAND- ING PILOT W/INDUCED DRAFT BLOWERS MODELS

a. On a call for heat, the thermostat contacts close, supplying 24 VAC to the relay.

b. The relay contacts close and energize the induced draft motor.

c. When the inducer starts, the air pressure switch closes at -0.20”WC differential pres- sure and energizes the gas valve.

d. When the gas valve is energized it steps open at a reduced flow and opens fully after approximately 14 seconds.

Gas Control Lever

Pilot Adjustment

Figure 28. Standing Pilot Valve

Pilot

Bracket

Figure 29. Lighting Furnace

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