Air Damper Adjustment; Combustion-Head Adjustment - Riello 40 Series Installation, Use And Maintenance Instructions

AIR DAMPER ADJUSTMENT

The air damper (1) is operated by the motor (2)
and assures that the air damper is fully open be-
fore the burner start cycle begins .
The regulation of the air plate is made by adjusting
the disc (3) after releasing the screws (4).
When optimum setting is reached, tighten the
screws (4).
The air damper leaves the factory set at position 3.

COMBUSTION-HEAD ADJUSTMENT

Loose the screw (A), move the elbow (B) so that
the rear plan of the coupling (C) coincides with the
set point.
Tight the screw (A).
Example:
The burner is installed on a 81 kW boiler with an
efficiency of 90%, the burner input is about 90 kW
using the diagram below, the combustion set
point is 3.
kcal/h kW
120
100,000
110
90,000
100
80,000
90
70,000
80
70
60,000
60
50,000
50
40,000
40
The diagram is to be used only for initial settings, to improve air pressure switch operation or
improve combustion, it may be necessary to reduce this setting (set point toward position 0).
2425
0 1 2
1
4
C
A
B
3 4
7
GB
D5036
S7015
5 Set point
D5258
2
3
4