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3.9
Burner description
1
Combustion head
2
Ignition electrode
3
Screw for combustion head adjustment
4
Pipe coupling
5
Fan motor
6
Fan air inlet
7
Air damper
8
Flame stability disc
9
Boiler fixing flange
10 Gas butterfly valve
11 Gas input pipe
12 Control box with lockout pilot light and lockout reset button
13 Flame inspection window
14 Screw securing fan to pipe coupling
15 Slide bars for opening the burner and inspecting the com-
bustion head
16 Gas pressure test point and head fixing screw
17 Air pressure test point
18 Flame sensor probe
19 Lifting rings
Technical description of the burner
7
6
5
12
13
15
14
11 10 9
4
3
1
16
17
Two types of burner failure may occur:
CONTROL BOX LOCKOUT:
if the control box button 12)(red led)(Fig. 5) lights up, it indicates
that the burner is in lockout.
To reset, hold the button down for between 1 and 3 seconds.
MOTOR LOCKOUT:
to release press the button on the thermal relay.
11
GB
20194403
8
2
18
Fig. 5
20194185
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