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4.11
Burner description
A
41
13
58
11
12
39
38
57
37
9
43
55
56
40
24
48
17
1
Combustion head
2
Ignition electrode for pilot
3
Screw for combustion head adjustment
4
Maximum gas pressure switch
5
Pipe coupling
6
Gas servomotor
7
Flame sensor
8
Motor contact maker and thermal relay with reset button
9
"OFF/ON" (0-1) selector
10 Terminal board for electrical wiring
11 Operator panel with LCD display
12 Control box for checking flame and air/fuel ratio
13 K5 relay
14 Suppressor
15 Flame inspection window
16 GAS ignition transformer
17 Cable grommets for electrical wiring (to be carried out by the
installer)
18 Air servomotor
19 Air pressure switch (differential type)
20 Guides for opening the burner and inspecting the combus-
tion head
21 Gas pressure test point and head fixing screw
22 Air pressure socket
23 Pilot
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
20168262
Technical description of the burner
5
3
1
21
20
25
31
33
34
30
42
29
22
26
15
44
23
47
2
41
4
52
7
46
18
28
36
49
6
45
27
51
35
50
16
19
54
30 Flame stability disc
31 Connector G1/4
32 Lifting rings
33 Flue gas recirculation butterfly valve
34 Flue gas recirculation servomotor
35 Pilot gas train
36 Flue gas temperature probe
37 K1 relay
38 K2 relay
39 K3 relay
40 Minimum oil pressure switch
41 OIL ignition transformer
42 OIL ignition electrodes
43 "OIL-EXT-GAS" selector
44 Nozzle return pressure gauge
45 Nozzle delivery pressure gauge
46 Maximum oil pressure switch
47 Oil modulator
48 Pump motor
49 Pump
50 Safety valve
51 Operation valve
52 Return valve (VR)
53 Guides extensions
54 Fan motor
55 Auxiliary terminal board
56 Auxiliary circuit fuse
57 LCM100 module
58 DFM300 module
59 Pump motor relay (KMP)
12
GB
Seen from "A"
32
53
20169319
8
59
14
10
Fig. 5
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