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15
Shutting Off Heater
1. Turn control knob clockwise
Clockwise
to the OFF position.
Shutting Off Burner Only (pilot stays lit)
1. Turn control knob clockwise
Clockwise
to the PILOT position.
MANUAL LIGHTING PROCEDURE
1. Remove front panel (see Figure 8, page 8).
2. Follow steps 1 through 6 under LIGHTING INSTRUCTIONS, pages 12 and 13.
3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 10 seconds after pilot is lit. After 10 seconds,
release control knob.
5. Replace front panel.
TO TURN OFF GAS TO APPLIANCE
Continued
GRH/OV 009GOOD PILOT
GRH/OV 010BAD PILOT
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 16 shows a correct pilot flame pattern. Figure 17 shows an incorrect pilot
flame pattern. The incorrect pilot flame is not touching the thermocouple. This will
cause the thermocouple to cool. When the thermocouple cools, the heater will shut
down.
Figure 16 - Correct Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown in Figure 17
• turn heater off (see TO TURN OFF GAS TO APPLIANCE, above)
• see TROUBLESHOOTING, pages 17 through 20
Figure 17 - Incorrect Pilot Flame Pattern
Pilot Burner
Thermocouple
Thermocouple
Pilot Burner
INSPECTING
BURNER