Air Damper Adjustment; Combustion-Head Adjustment - Riello 40 GS3 Manuel D'entretien

AIR DAMPER ADJUSTMENT

The air damper (1) is operated by the motor (2) and
assures that the air damper is fully open before 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 screws (A), move the elbow (B) so that
the rear plan of the coupling (C) coincides with the
set point. Tight the screws (A).
WARNING
To disassemble the diffures disc-holder head as
follow:
– Loose the two screws (A).
– Withdraw the turning it at about 180°.
– Pull out the head leaning into the bottom.
Example:
The burner is installed on a 21 kW boiler with an efficiency of 91%, the burner input is about 23 kW
using the diagram below, the combustion set point is 1.
kcal/h
30,000
25,000
20,000
15,000
10,000
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).
2043
kW
40
35
30
25
23
20
15
10
0
0.5
1
4
C
A
D5051
1 1.5
7
GB
D5036
S7020
B A
2 Set point
2
3
4