Primary Air Shutter Adjustment - Trane GRAA Installation, Operation And Maintenance Manual

Primary Air Shutter Adjustment

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MUA-SVX004B-EN
After the unit has been operated for at least 15 minutes, adjust the primary air flow to the
burners. Turn the friction-locked, manually-rotated air shutters clockwise to close, or
counterclockwise to open.
For correct air adjustment, close the air shutter until yellow tips in the flame appear. Then
open the air shutter to the point just beyond the position where yellow tipping disappears.
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