Setting Air Damper; Damper Motor, Air Volume; Adjustment Of Gas Flow - Bentone BG 550 Installation And Maintenance Instruction

4.11 Setting Air damper

4.12 Air adjustment
The damper motor turns the damper between three pre-set positions:
fully closed, low load, full load. These positons are controlled in the motor
by cams of different colours. The black cam controls the gas valve for full
load. If the air volume needs changing: Remove the cover of the damper
motor and change the position of the cams by turning them with the tools
accompanying the burner.
4.13 Low load:
Adjust the operating switch to full load (ll).
- * Reduce the air volume: Turn orange cam towards 0°
- * Increase the air volume: Turn orange cam towards 90°
Adjust the operating switch back to low load and check the air volume.
4.14 Full load
Adjust the operating switch to low load.
- Reduce the air volume: Turn red cam towards 0°
- Inrease the air volume: Turn red cam towards 90°
If the red cam is moved, change the black cam as much. Adjust the
operating switch to low load and check that the correct air volume has been
obtained.
Note! The blue cam is the limit position for fully closed damper and it is
normally not necessary to change it.
Releasing button
By pressing the button and snapping it down, the motor will be released and
the damper can easily be turned. This function facilitates an exchange of
damper motor.
Solenoid valve
High capacity (black)
High capacity (red)
Low capacity (orange)
Closed damper (blue)
20 Bentone
Releasing button
N.B! The upper position is
the standard positiont
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