Operating Heater
Continued
Operating
Blower
This heater has a thermostatic blower that will automatically turn ON or OFF.
Note: Your heater and thermostat blower will not turn on and off at the same time. The heater may run for several minutes before the blower turns on. After the heater modulates to the pilot position, the blower will continue to run. The blower will shut off after the heater cabinet temperature decreases.
Note: It is safe to operate heater with blower turned off. However, the blower helps distrib- ute heated air from the heater.
Inspecting Heater
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 29 shows a correct pilot flame pattern. Figure 30 shows an incorrect pilot flame pat- tern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermo- couple 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 Ap- pliance, page 16)
•see Troubleshooting, page 22
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.
Blue Flame
Pilot
Burner
Thermocouple
Figure 29 - Correct Pilot Flame Pattern
Yellow
Flame 
Pilot
ThermocoupleBurner
Figure 30 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
Figure 31 shows the burners in the ON and OFF positions. Burners will come on and go off when the remote control is set in the manual on mode or thermostat mode.
Figure 32 shows a correct burner flame pat- tern. Figure 33 shows an incorrect burner flame pattern.
If burner flame pattern is incorrect, as shown in Figure 33
•turn heater off (see To Turn Off Gas to Ap- pliance, page 16)
•see Troubleshooting, page 22
Burners ON
Burners OFF
Figure 31 - Burner Patterns
Figure 32 - Correct Burner Flame Pattern
Figure 33 - Incorrect Burner Flame
Pattern
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