Inspecting Burners
Check pilot flame pattern and burner flame patterns often.
PILOT ASSEMBLY
The pilot assembly is factory preset for proper flame height. Alterations may have occurred during shipping and handling. Call a qualified service person to readjust the pilot if necessary.
The position and pattern of pilot flames in rela- tion to sensing devices should be as shown in Figures 38 and 39 respectively.
Pilot flame may need adjustment in order for thermocouple, thermopile and/or ignition system to sense pilot flame.
If your pilot assembly does not meet these requirements:
•turn fireplace off (see To Turn Off Gas to Appliance, page 20 or 21)
•see sections under Troubleshooting, page 25
Thermopile
3/8" to 1/2"
Pilot Burner
1/4"
Thermocouple
Piezo
Ignitor
Figure 38 - Pilot Assembly
(Millivolt Ignition System)
Pilot 
Sensor
Burner 
Rod
Piezo
Ignitor
Figure 39 - Pilot Assembly
Electronic Ignition System)
Burner Flame Patterns
Burner flames will be steady, not lifting or floating. Flame patterns will differ from unit to unit and will vary depending on installation type and weather conditions.
If vent configuration is installed incorrectly, flames will lift or “ghost”. This can be danger- ous. Inspect flames after installation to ensure proper installation and performance. Figure 40 shows a typical flame pattern.
If burner flame pattern differs from that de- scribed:
•turn fireplace off (see To Turn Off Gas to Appliance, page 20 or 21)
•see Troubleshooting, page 25
Figure 40 - Typical Flame Pattern
Air Adjustment Setting
The main burner air shutter opening is factory set to the following:
Natural Gas - 1/8", Propane/LP Gas - 3/4"
Air shutter may require adjustment depending on altitude, venting condition, burner opera- tion and general flame appearance.
If flames are lifting or sooting shutter may require opening. If flames are too blue or im- properly lighting shutter may require closing. See Figure 41 for proper air adjustment.
IMPORTANT: Do not reduce air shutter open- ing any lower than designed minimum stop setting of 1/8".
Burner | Air |
Tube | Shutter |
Adjustment | 1/8" Minimum |
Screw | Air Opening |
Figure 41 - Adjusting Air Setting
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