12.SetthethermostatmodetoHEAToradesired
temperaturesettingandthenON.
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: Inthe 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.
/L AVERTISSEMENT:
En case de temperature excessive,
ou sail est impossible de cooper
i'alimentation en gaz, fermer le
robinet manuel d'alimentation en gaz
du g_n_rateur d'sir chaud avant de
cooper i'alimentation 61ectrique.
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
IVlodels IVllIVl
Direct ignitionfurnaces 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 flame sensor, shutting off gas
should the flame 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 counter-clockwise to ON (Figure 32).
. 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: Inthe 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
21
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