Fixing The Electrical Wiring; Working; Combustion Head Setting; Air Damper Setting - Riello 554 T80 Installation, Use And Maintenance Instructions

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 81 kW boiler with an efficiency of
90%, the burner input is about 90 kW using the diagram, 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
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).
2753
C
Cable clamps
ø
A = 8
D5258
1 2 3
(See Fig. 2)
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