OPERATING HEATER

Continued

INSPECTING BURNERS

22

MANUAL LIGHTING PROCEDURE

1.Follow steps 1 through 5 under Lighting Instructions, pages 20 and 21.

2.Depress control knob and light pilot with match.

3.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8 on page 21.

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 22 shows a correct pilot flame pattern. Figure 23 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.

Thermocouple

Pilot Burner

Thermocouple

Pilot Burner

 

 

Figure 22 - Correct Pilot

Figure 23 - Incorrect Pilot

Flame Pattern

Flame Pattern

If pilot flame pattern is incorrect, as shown in Figure 23

turn heater off (see To Turn Off Gas to Appliance, page 21)

see Troubleshooting, pages 23 through 26

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Desa Tech CGD3924N, CGD3018N, CGD3930N installation manual Operating Heater Inspecting Burners, Pilot Flame Pattern