Desa L32, L36, L32, L36, VL36, L42, L36, L42, LZPR) Inspecting Burners, Pilot Flame Pattern

INSPECTING BURNERS

Check pilot flame pattern and burner flame pat- terns often.

PILOT FLAME PATTERN

Figure 43 shows a correct pilot flame pattern. Figure 44 shows an incorrect pilot flame pattern. The incor- rect 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 44

•turn heater off (see To Turn Off Gas to Appli- ance, page 23 [Manually-Controlled Models] or page 25 [Remote-Ready Models])

•see Troubleshooting, page 29

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.

Pilot Burner

Thermocouple

Figure 43 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)

FRONT BURNER FLAME PATTERN

Figure 45 shows correct front burner flame pat- tern. Figure 46 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, follow 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 46

•turn heater off (see To Turn Off Gas to Appli- ance, page 23 [Manually-Controlled Models] or page 25 [Remote-Ready Models])

•see Troubleshooting, page 29

Pilot Burner

Thermocouple

Figure 44 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)

Figure 45 - Correct Front Burner Flame Pattern

Figure 46 - Incorrect Front Burner Flame Pattern

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