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Gas Burner Air Shutter
NOTE: Air inlet shutters on the burner must be
adjusted so sufficient air is metered into the system
for proper combustion and maximum efficiency.
Before adjusting the inlet shutters, be sure that all
lint is removed from lint compartments and lint
screen.
Air shutter adjustment will vary from location to
location and will depend on the vent system, number
of units installed, make-up air and line gas pressure.
Opening the shutter increases the amount of primary
air supplied to the burner, while closing the shutter
decreases the primary air supply. Adjust air shutter as
follows:
1. Remove the upper access panel.
2. Start the tumbler and check the flame pattern.
Correct air and gas mixture is indicated if the
flame pattern is primarily blue, with small yellow
tips, and bends to the left of the heater section
(refer to Figure 20). Too little air is indicated if
the flame is yellow, lazy and smoky. A flame
pattern that flares to the right and left (refer to
Figure 20) indicates no air is flowing through the
tumbler.
3. To adjust the air shutter, loosen air inlet shutter
adjusting screw (refer to Figure 20).
4. Open or close air shutter as necessary to obtain
proper flame intensity.
5. After air shutter is adjusted for proper flame,
tighten air shutter adjusting screw securely.
6. If the flame pattern is straight up (refer to
Figure 20), insufficient primary air is flowing
through the tumbler and airflow switch is
improperly set.
M414038
Adjustments
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
PROPER AIRFLOW
INSUFFICIENT AIRFLOW
NO AIRFLOW
1
Air Shutter Adjusting Screw
Figure 20
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1
1
T464I
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