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117437-01D 23
INSPECTING BURNERS
Thermocouple
Thermopile
1/4"
Pilot.Burner
Piezo
Ignitor
Figure 38 - Pilot Assembly
(Millivolt Ignition System)
3/8".to.1/2"
Sensor.
Rod
Pilot.
Burner
Piezo
Ignitor
Figure 39 - Pilot Assembly
Electronic Ignition System)
Check pilot ame pattern and burner ame
patterns.often.

PILOT ASSEMBLY

The.pilot.assembly. is. factory. preset. for.
proper ame height. Alterations may have
occurred.during.shipping.and.handling.. Call.
a qualied service person to readjust the pilot
if.necessary.
The position and pattern of pilot ames in rela-
tion.to.sensing.devices.should.be.as. shown.
in.Figures.38.and.39.respectively.
Pilot ame may need adjustment in order
for thermocouple, thermopile and/or ignition
system to sense pilot ame.
If.your.pilot. assembly. does. not. meet. these.
requirements:
• turn replace off (see To Turn Off Gas to
Appliance, page 20 or 21)
•. see. sections. under. Troubleshooting,
page.25
Figure 40 - Typical Flame Pattern
Figure 41 - Adjusting Air Setting

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 ame appearance.
If ames are lifting or sooting shutter may
require opening. If ames 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".
1/8".Minimum.
Air.Opening
Air.
Shutter
Burner.
Tube
Adjustment
Screw

BURNER FLAME PATTERNS

Burner ames will be steady, not lifting or
oating. Flame patterns will differ from unit
to.unit.and.will.vary.depending.on.installation.
type.and.weather.conditions.
If vent conguration is installed incorrectly,
ames will lift or “ghost”. This can be danger-
ous. Inspect ames after installation to ensure
proper.installation.and.performance..Figure.40.
shows a typical ame pattern.
If burner ame pattern differs from that de-
scribed:
• turn replace off (see To Turn Off Gas to
Appliance, page 20 or 21)
•. see.Troubleshooting, page 25