Inspecting Burners - Cedar Ridge MTF4TPU Manual Del Usuario

IMPORTANT: Owner's should check pilot flame pattern and burner flame pattern often.
Incorrect flame patterns indicate the need for cleaning (see Care and Maintenance,
page 24) or service.
WARNING: Only a qualified service person should service and
repair heater. This includes maintenance requiring replacement or
alteration of components.
Figure 28 shows a correct pilot flame pattern.
Figure 29 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the ther-
mocouple to cool, which shuts the heater off.
If pilot flame pattern is incorrect, as shown
in Figure 29
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting pages 25 through 27.
WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If the burner flame
pattern shows yellow tipping,
follow instructions at bottom of
this page.
Figure 30 shows a correct burner flame pat-
tern. Figure 31 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 31:
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting pages 25 through 27.
200032-01A
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INSPECTING BURNERS

PILOT 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.
Figure 29 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
Figure 30 - Correct Burner Flame Pattern
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Figure 28 - Correct Pilot Flame Pattern
(natural gas shown)
(natural gas shown)
with Control Knob set to High
Figure 31 - Incorrect Burner Flame
Pattern with Control Knob set to High
23