Full Product Manual
20
OPERATION
BURNER FLAME PATTERN
Fig. 28 shows a correct burner ame pattern. Fig. 29 shows an incorrect burner ame pattern with
lifting, and excessive ame height.
If burner ame is incorrect:
• turn heater off (see “To Turn Off Gas to Appliance”, page 20).
• see Troubleshooting, pages 23 through 26.
NOTE: Ambient ame burners produce both a blue and yellow ame. An excessively high yel-
low colored ame may be caused by airborne dust, dander, pet hair, etc. Additionally, an excess
amount of Mercaptane in the fuel can result in an orange or yellow colored ame.
The upper third of ame
may be bright yellow when
operated on propane.
When this heater is set for use on propane gas, the upper one third of the ame may be bright yellow.
When this heater is set for use on natural gas, a slight yellow tipping of the ame may occur.
Fig. 28 - Correct/Normal Flame Pattern
with short ames with Control Knob Set
to High Flame (5)
Fig. 29 - Incorrect/Abnormal Flame Pat-
tern with tall ames with Control Knob
Set to High Flame (5)
1/2 Height of rear
wall of the reector
1/2 Height of rear
wall of the reector