Air Pressure Switch; Cable Clamp; Air Damper Setting; Fixing Of The Electrical Wiring - Riello GS5 Installation, Use And Maintenance Instructions

3.5 FIXING OF THE ELECTRICAL WIRING

All the electrical wires, which are to be connected into the terminal board (6, fig. 1, page 1) should pass
through the cable grommet (5, fig. 1).
All the electrical wires, which are to be connected into the terminal board must be gripped in the cable
clamps (7, fig. 1). This is molded on both sides to allow the use of various diameter cables.
A
B
D5052
A =
4.

WORKING

4.1 AIR DAMPER SETTING

(See fig. 2)
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).

4.2 COMBUSTION HEAD SETTING

(See fig. 3)
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 40 kW boiler with an efficiency
of 90%, the burner input is about 44 kW using the diagram
below, the combustion set point is 3.
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 posi-
tion 0).
kcal/h kW
70
60,000
60
50,000
50
40,000
44
40
30,000
30
20,000
20
10,000
10
0 1
2773
C
ø
8
2 3 4
N° set point
Cable clamps
ø
B = 11
Fig. 2
Fig. 3
D5137
C
A
5
6 GB
A B C
ø
C = 16
2
1
2
D5231
S7015
B