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Technical description of the burner
4.10 Burner description
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 Maximum gas pressure switch
5 Pipe coupling
6 Servomotor controlling the gas butterfly valve and the air
damper, by means of a 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
7 Extensions for slide bars 10)
8 Electrical control box with lockout pilot light and reset button
9 Flame inspection window
10 Slide bars for opening the burner and inspecting the
combustion head
11 Gas pressure test point and head fixing screw
12 Air pressure test point
13 Flame sensor probe
14 Air damper
15 Air inlet to fan
16 Screws to secure fan to pipe coupling
17 Gas input pipe
18 Gas butterfly valve
19 Boiler fixing flange
20 Flame stability disc
21 Fan motor
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