OPERATING HEATER

Models VN1800D and VN3000D

Continued

INSPECTING BURNER

24

 

 

 

TO TURN OFF GAS TO APPLIANCE

 

 

 

 

 

 

 

 

Shutting Off Heater

1.

Turn control knob clockwise Clockwise to the OFF position.

2.

Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

1.

Turn control knob clockwise Clockwise to the PILOT position.

 

 

 

 

 

MANUAL LIGHTING PROCEDURE

1.Follow steps 1 through 5 under Lighting Instructions, pages 21 and 22.

2.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

3.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

Check pilot flame pattern and burner flame pattern 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.

Pilot Burner

Thermocouple

GOOD PILOT

GRH/OV 009

Figure 22 - Correct Pilot Flame Pattern

Thermocouple

Pilot Burner

 

BAD PILOT

GRH/OV 010

Figure 23 - Incorrect Pilot Flame Pattern

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

turn heater off (seeTo Turn Off Gas to Appliance, page 20 [models VN1800ITA and VN2550ITA] or page 24 [models VN1800D and VN3000D])

see Troubleshooting, pages 24 through 29

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Image 24
Desa VN1800ITA, VN1800D, VN2550ITA, VN3000D installation manual Inspecting Burner, Pilot Flame Pattern