OPERATION—CONTINUED
Startup
Startup Procedure
Startup the heater as follows:
1. Set thermostat at lowest setting.
2. Turn OFF all electric power to appliance.
NOTE: This appliance is equipped with an ignition device that automatically lights the burner. Do
not try to light the burner by hand.
3. Open access door and locate gas control (ON/OFF) knob or switch on gas valve (see Figure 26).
Figure 26. Gas Valve ON/OFF Control
4. Turn gas control switch to OFF or turn knob clockwise to OFF.
5. Wait 5 minutes to clear out any gas and then smell for gas (including near floor).
a. If you smell gas, STOP! and follow steps in DANGER message listed above or on heater operating label.
b. If you do not smell gas, proceed to step 6.
6. Turn gas control switch to ON or turn knob counterclockwise to ON.
7. Close access door.
8. Turn ON electric power to heater.
9. Set thermostat to desired setting.
a. If heater does not operate, follow instructions in step 13 or on heater operating label and call your service
technician.
b. If heater operates, thermostat calls for heat, which energizes venter motor.
10. Pressure switch closes, which fires unit.
Top View
ON/OFF Switch
38
I-UEZ (04-21) 1034347-0
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