31
OPERATION
WARNING
: Do not allow fans to blow directly into the heater. Avoid any drafts that alter burner
flame patterns.
WARNING
: Do not use a blower insert, heat exchanger insert or other acessory not approved for
use with this heater.
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 29 shows a correct pilot flame pattern. Figure 30 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 30.
• turn heater off (see To Turn Off Gas to Appliance, page 24.
• see Troubleshooting, page 34.
Fig. 29 - Correct Pilot Flame Pattern
Fig. 30 - Incorrect Pilot Flame Pattern
NG
LP
NG
LP
A
LP PILOT
A
LP PILOT
A
NG PILOT
A
NG PILOT
