Desa CGN20 User Manual download pdf (Page 11)

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OWNER’S MANUAL

CLEANING AND

MAINTENANCE

WARNING: Turn off heater

and let cool before cleaning.

CAUTION: You must keep

control areas, burner, and circu-

lating air passageways of heater

clean. Inspect these areas of

heater before each use. Have

heater inspected yearly by a quali-

fied service person. Heater may

need more frequent cleaning due

to excessive lint from carpeting

and bedding material, sawdust,

cobwebs, etc.

ODS/PILOT AND BURNER

• Use a vacuum cleaner, pressurized air,

or small, soft bristled brush to clean.

CABINET

Air Passageways

• Use a vacuum cleaner or pressurized air

to clean.

Exterior

• Use a soft cloth dampened with a mild

soap and water mixture. Wipe the cabi-

net to remove dust.

Figure 19 - Correct Burner Flame Pattern

Figure 20 - Incorrect Burner Flame Pattern

NOTICE: Do not mistake orange

flames with yellow tipping. Dirt

or other fine particles enter the

heater and burn causing brief

patches of orange flame.

WARNING: If yellow tipping

occurs, your heater could pro-

duce increased levels of carbon

monoxide. If burner flame pat-

tern shows yellow tipping, follow

instructions at bottom of this

page.

CORRECT FLAME PATTERN

AT HIGH POSITION

1/2 HEAT SHIELD

OR GLASS HEIGHT

Figure 18 - Incorrect Pilot Flame Pattern

INSPECTING

BURNER

Check pilot flame pattern and burner flame

pattern often.

PILOT FLAME PATTERN

Figure 17 shows a correct pilot flame pat-

tern. Figure 18 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 17 - Correct Pilot Flame Pattern

Thermocouple

Pilot

Burner

Pilot

Burner

Thermocouple

If pilot flame pattern is incorrect, as shown

in Figure 18

• turn heater off (see To Turn Off Gas to

Appliance, page 10)

• see Troubleshooting, pages 12-14

1/2 HEAT SHIELD

OR GLASS HEIGHT

INCORRECT FLAME PATTERN

AT HIGH POSITION

Yellow

Tipping

BURNER FLAME PATTERN

Figure 19 shows a correct burner flame

pattern. Figure 20 shows an incorrect burner

flame pattern. The incorrect burner flame

pattern shows yellow tipping of the flame. It

also shows the flame higher than 1/2 the

heat shield height.

If burner flame pattern is incorrect, as shown

in Figure 20

• turn heater off (see To Turn Off Gas to

Appliance, page 10)

• see Troubleshooting, pages 12-14

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