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11.5 Air Damper Adjustment
The air damper is set in factory. This regulation is purely indicative. Each installation
however, has its own working conditions: actual nozzle output; positive or negative
pressure in the combustion chamber, the need of excess air, etc. All these conditions may
require a different air damper setting.
Air Damper (A) – 15/21 Burner Only
Air Damper (A) – The main air damper can be set in
either of two positions. To set the positions of the
damper, proceed as follows: Remove the secondary
air damper (B) loosening the screws (1). Loosen the
screw (2) and rotate the main air damper (A) to the
required position. Retighten the screw (2) and put
back the secondary air damper (B).
Air Damper (B)
Air Damper (B) – The purpose of
this damper is to perform a fine
tuning of the inlet air. Tuning of this
device is possible by turning the
screw (3).
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