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3.5 FIXING THE ELECTRICAL WIRING
All the electrical wires, which are to be connected to the terminal board (7, fig. 1, page 1) should pass through
the cable grommet (4, fig. 1). All the electrical wires, which are to be connected into the terminal board must be
gripped in the cable clamps (3, fig. 1). This is molded on both sides to allow the use of various diameter cables.
A
B
D5052
4.
WORKING
4.1 COMBUSTION HEAD SETTING
Loose the screw (A), move the elbow (B) so that the rear plate
of the coupling (C) coincides with the set point.
Tighten the screw (A).
Example:
The burner is installed on a 155 kW boiler with an efficiency of
90%, the burner input is about 172 kW using the diagram, the
combustion set point is 3.
kcal/h
kW
240
200,000
220
180,000
200
160,000
180
172
140,000
160
140
120,000
120
100,000
100
80,000
70,000
80
0
The diagram is to be used only for initial settings, to improve air pressure switch operation or improve combus-
tion, it may be necessary to reduce this setting (set point toward position 0)
4.2 AIR DAMPER SETTING
The regulation of the air-rate is made by adjusting the air damper (1), after loosing the screws (2).
When the optimal regulation is reached, screw tight the screws (2).
2754
C
ø
A =
8
D5109
1
2
3
(See fig. 2)
Cable clamps
ø
B =
11
C
A
B
4
5
Set point
6
GB
A
B
C
ø
C =
16
Fig. 2
2
S7015
1
2
D5231
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