OWNERS MANUAL

OPERATING

HEATER

Continued

VARIABLE CONTROL

OPERATION

The variable control valve can be set to any heat setting and flame height desired, by simply turning the control knob until that setting is attained. Even the lowest setting provides realistic flames and glow- ing embers from two burners. Selecting higher settings produces greater heat output. This results in increased heating comfort.

WARNING: Do not operate heater between locked positions.

CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1.Press in and turn control knob clock- wise Clockwise to the HIGH position.

2.Turn the control knob clockwise Clockwise to the PILOT position.

3.Press in control knob and turn clock- wise Clockwise to the OFF Position.

Shutting Off Burners Only (pilot stays lit)

1.Turn the control knob clockwise Clockwise to the HIGH position.

2.Press in and turn control knob clock- wise Clockwise to the pilot position.

MANUAL LIGHTING

PROCEDURE

1.Follow steps 1 through 5 under Light- ing Instructions, page 14.

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 under Lighting Instruc- tions, page 14.

INSPECTING

BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 23 shows a correct pilot flame pat- tern. Figure 24 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.

If pilot flame pattern is incorrect, as shown in Figure 24

turn heater off (see To Turn Off Gas to Appliance, column 1)

seeTroubleshooting, pages 17 through 19

Thermocouple

Pilot Burner

Figure 23 - Correct Pilot Flame Pattern

Thermocouple

Pilot Burner

Figure 24 - Incorrect Pilot Flame Pattern

FRONT BURNER FLAME PATTERN

Figure 25 shows correct front burner flame pattern. Figure 26 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.

WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. If front burner flame pattern shows yellow tipping, fol- low instructions at bottom of this page. Yellow flame on rear burner is normal.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by heater, causing brief patches of orange flame.

If front burner flame pattern is incorrect, as shown in Figure 26

turn heater off (see To Turn Off Gas to Appliance, column 1)

seeTroubleshooting, pages 17 through 19

Figure 25 - Correct Front Burner Flame Pattern

Yellow Tipping At Top

of Blue Flame

Figure 26 - Incorrect Front Burner Flame Pattern

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Desa VFN24MV VFN30MV installation manual Inspecting Burners