22
BENTONE
165 105 18-2
5.3 Air setting
1. Set the control switch (S2) to Low Load (I).
2. Loosen the screw (A), turn the damper to the desired position, and
retighten the screw (A).
3. Set the control switch (S2) to High Load (II).
4. Use a hex key to screw the socket (B) in to decrease or out to increase.
5. The damper position can be read on the damper scale (C).
6. Start burner and check/adjust combustion.
C
A
B
S2
Excess air ue gases Max. % CO
2
% O
2
% CO
2
Lambda 1.2
3–5 ≈12.5 15.4
Recommended excess air
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