Speed Queen none Adjustments, Gas Burner Air Shutter

Adjustments

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 adjustments 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:

Refer to Figure 18.

1.Open the access panel.

2.Start the tumbler and check the flame pattern. If the flame pattern is straight up, insufficient air is flowing through the tumbler and air flow switch is improperly set. A flame pattern that flares to the right and left indicates no air is flowing through the tumbler.

3.Correct air and gas mixture is indicated if the flame pattern is primarily blue, with small yellow tips, and bends to the right of the heater section. Too little air is indicated if the flame if yellow, lazy and smokey.

4.To adjust the air shutter, loosen air inlet shutter adjusting screw.

5.Open or close air shutter as necessary to obtain proper flame intensity.

6.After air shutter is adjusted for proper flame, tighten air shutter adjusting screw securely.

PROPER AIRFLOW

INSUFFICIENT AIRFLOW

NO AIRFLOW

T457I

1Air Shutter Adjusting Screws

Figure 18

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