11
20190369
GB
Technical description of the burner
3.9
Burner description
1
Combustion head
2
Ignition electrode
3
Screw for combustion head adjustment
4
Air pressure switch (differential type)
5
Flame sensor probe
6
Air pressure test point
7
Gas pressure test point and head fixing screw
8
Screws to secure fan to pipe coupling
9
Slide bars for opening the burner and inspecting the
combustion head
10 The servomotor controls the gas butterfly valve and the air
damper through the variable profile cam mechanism.
When the burner is not operating the air damper is fully
closed in order to reduce heat dispersion from the boiler due
to the flue draught, which draws air from the fan suction inlet
11 Areas for passage of electric cables
12 Air inlet to fan
13 Gas input pipe
14 Gas butterfly valve
15 Boiler fixing flange
16 Flame stability disc
17 Flame inspection window
18 Fan motor
19 Air damper
20 Control box
NOTE:
Burner lockout may occur
CONTROL BOX LOCKOUT:
if the control box button lights up, it indicates that the burner is in
lockout.
Press the push-button to reset.
12
15
14
16
10
11 7 6
13
18
19
4
3
17
20
9
8
5
2
1
Fig. 4
20190512
