INSPECTING BURNERS
19 Pilot Assembly
Burner Flame Pattern
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT ASSEMBLY
The pilot assembly is factory preset for the 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 the pilot flames in relation to the sens- ing devices should be as shown in Figures 38 and 39 respectively.
The pilot flame may need adjustment in order for the thermocou- ple, thermopile and/or the ignition system to sense the pilot flame.
If your pilot assembly does not meet these requirements:
•turnfireplaceoff(seeToTurnOff GastoAppliance,page16or17)
•see sections under Troubleshooting, pages 32 through 36
3/8" to 1/2"
Thermo- pile
Pilot Burner
Figure 40 - Typical Flame Pattern
Piezo | Burner |
Ignitor | Tube |
Air
Shutter
Figure 38 - Pilot Assembly (Millivolt System)
1/4" |
|
Pilot Burner |
|
Sensor Rod |
|
Ignitor | Adjustment |
Screw |
1/8" Minimum
Air Opening
Figure 39 - Pilot Assembly (Electronic Ignition System) | Figure 41 - Adjusting Air Setting |
BURNER FLAME PATTERN
Burner flames will be steady; not lifting or floating. Flame patterns will be different from unit to unit and will vary depending on installation type and weather conditions.
If the vent configuration is installed incorrectly, the flames will lift or “ghost”. This can be dangerous. Inspect the flames after installa- tion to ensure proper installation and performance.
Figure 40 shows a typical flame pattern.
If burner flame pattern differs from that described:
•turnfireplaceoff(seeTo Turn Off Gas toAppliance,page16or17)
•see Troubleshooting, pages 21 through 25
AIR ADJUSTMENT SETTING
The main burner air shutter opening is factory set to the following:
1/8" - Natural Gas
3/4" - LP / Propane Gas
The air shutter may require adjustment depending on the altitude, venting condition, burner operation and general flame appearance.
If flames are lifting or sooting the shutter may require opening. If flames are too blue or improperly lighting the shutter may require closing. See Figure 41 for proper air adjustment.
IMPORTANT: Do not reduce the air shutter opening any lower than the designed minimum stop setting of 1/8"
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