12.Set the thermostat mode to HEAT or a desired temperature setting and then ON.
WARNING:
Close the hinged fire door. If door is left open or spring is broken it may allow products of combustion into the living space by the furnace blower, resulting in possible asphyxiation.
13. Replace the furnace door.
NOTE:In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.
WARNING:
Should overheating occur, or the gas supply fails to shut off, shut off the manual gas valve to the furnace before shutting off the electrical supply.
AVERTISSEMENT:
En case de température excessive, ou sail est impossible de cooper l’alimentation en gaz, fermer le robinet manuel d’alimentation en gaz du générateur d’sir chaud avant de cooper l’alimentation électrique.
How to Shut Off Gas - Standing Pilot
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance at the breaker or fuse box.
3.Remove the furnace door.
4.Push in the gas control lever and move to the left to the OFF position. DO NOT FORCE!
5.Replace the furnace door.
Operating Instructions for Direct Ignition Models M1M
Direct ignition furnaces do not have a pilot.Ignition is accomplished by a silicon carbide hot surface ignitor. A control module takes care of all timing functions. After lighting, the control module uses the ignitor as a fl ame sensor, shutting off gas should the fl ame go out. There are no external relays or timing devices. Do not try to light this furnace by hand. The control module is not field serviceable.
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance.
3.Remove the furnace door and turn off the gas valve:
•Honeywell: push in and turn the gas control knob clockwise to OFF (Figure 32)
•Robertshaw: push the gas control lever to the OFF position (Figure 33). Do not force!
4.Wait ten (10) minutes to clear out any gas. If you smell gas, STOP! and follow the Safety Information on page 19. If you do not smell gas, proceed to next step 5.
5.Set the thermostat MODE the ON position.
6.Turn the gas valve ON:
•Honeywell: push in and turn gas control knob
•Robertshaw: push the gas control lever to the ON position (Figure 33). Do not force!
7.Replace the furnace door.
8.Turn on all electric power to the appliance.
9.Change the thermostat mode to HEAT and the temperature selector to a desired temperature level. The igniter should light in approximately 75 seconds. If the appliance will not operate, see “How To Shut Off Gas - Direct Ignition” and call your service technician or gas supplier.
NOTE:In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.
GAS CONTROL KNOB
Figure 32. Direct Ignition
Gas Valve - Honeywell
Gas Control Lever
Figure 33. Direct Ignition
Gas Valve - Robertshaw
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