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OPERATING HEATER
Continued
WARNING:
Improper installation,
adjustment, alteration, service or
maintenance can cause property
damage, personal injury, or loss of
life. Installation and service must be
performed by a qualified installer,
service agency, or the gas supplier.
IMPROPER: Always operate the
appliance at the completely “ON” or
the completely “OFF” positions. Never
use the heater at a setting between these
positions as this can result in improper
combustion .
PILOT FLAME PATTERN
(MILLIVOLT)
Figure 41 shows a correct pilot flame
pattern. Figure 42 shows an incorrect
pilot flame pattern. The incorrect pilot
flame is not heating the thermo-
couple. This will cause the thermo-
couple to cool. When the thermo-
couple cools, the heater will shut
down.
If pilot flame pattern is incorrect, as
shown in Figure 42:
• Turn heater off (see To turn Off
Gas to Appliance, page 21)
• See Troubleshooting, pages 26
through 28.
OPERATING HEATER
Continued
Figure 41– Correct flame pattern
Figure 42– Incorrect flame patterns
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