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Inpecting heater, Inspecting heater – Desa BG30PT User Manual

Page 18

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114683-01B

18

BURNER FLAME PATTERN

WARNING: If yellow tipping

occurs, your heater could pro-

duce increased levels of carbon

monoxide.

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.

Figure 25 shows a correct burner flame pattern.

Figure 26 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 26
• turn heater off (see To Turn Off Gas To Appli-

ance, page 16 or 17)

• see Troubleshooting, page 20

INSPECTING HEATER

Check pilot flame pattern and burner flame pat-

tern often.

PILOT FLAME PATTERN

Figure 23 shows a correct pilot flame pattern.

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 Appli-

ance, page 16 or 17)

• see Troubleshooting, page 20
Note:

The pilot flame on natural gas units will

have a slight curve, but flame should be blue and

have no yellow or orange color.

Figure 24 - Incorrect Pilot Flame Pattern

Figure 23 - Correct Pilot Flame Pattern

Thermocouple

Pilot Burner

Pilot
Burner

Thermocouple

Blue Flame

Yellow Flame

Figure 25 - Correct Burner Flame Pattern

Yellow
Tipping

Figure 26 - Incorrect Burner Flame

Pattern

Heat

1

/

2

Shield

Height

Blue
Flame

Heat

1

/

2

Shield

Height

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