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Technical description of the burner
3.9
Burner components
1
Combustion head
2
Burner pilot
3
Screw for combustion head adjustment
4
Maximum gas pressure switch
5
Burner pilot attachment
6
Gas actuator
7
Ignition electrode
8
Fan motor contactor and thermal relay with reset button
9
RWF40 connectors
10 Burner terminal board “X1”
11 Operator panel with LCD display
12 Control box for checking flame and air/fuel ratio
13 “K1” relay
14 High voltage lead
15 UV scanner
16 Ignition transformer
17 Holes for cable grommets for electrical wiring, accessories
and power supply (to be carried out by the installer)
18 Air actuator
19 Low air pressure switch
20 Guides for opening the burner and inspecting the combustion
head
21 Gas pressure test point and head fixing screw
22 Air pressure socket
23 RWF40 modulator
24 Air damper
25 Fan air inlet
26 Screws to secure fan to pipe coupling
27 Gas input pipe
28 Gas butterfly valve
29 Boiler fixing flange
30 Flame stability disc
31 Horn
32 “OFF-LOCAL-REMOTE” switch
33 “ALARM SILENCE” button
34 “K2” relay
35 “K3” relay
36 “K4” relay
37 Optional hole
38 Ground terminals
One type of burner failure may occur:
Fan motor trip
release by pressing the pushbutton on thermal overload
8)(Fig. 5). See “Thermal relay calibration” at page 25.
Fig. 5
20054147
A
Seen from A
