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4.12
Electrical panel description
17
22
24
19
18
19
1
Ignition transformer
2
Burner state indicator light and reset button.
3
OFF-automatic-manual selector
4
Electrical control box
5
Power increase - power reduction selector
6
Earth terminal
7
Air pressure switch
8
Bracket for applying the kits
9
Relay with clean contacts for signalling the burner is in lock-
out and that the burner is operating
10 Oil enable relay
11 Oil enable relay
12 Timer for star/triangle start up
13 Main terminal supply board
14 Supply cables and external connections passage. See sec-
tion "Electrical wiring" on page 28
15 Valve group terminal board
16 Auxiliary circuits fuse (includes a spare fuse)
17 Pump motor contact maker
Technical description of the burner
12
6
6
21
20
16
21
17
20095671
1
8
3
2
4
5
13
23
14
7
11
27
26
25
20096238
18 Direct start up line contactor
19 Fan motor thermal relay (with reset button)
20 Triangle contactor (Star/triangle start up)
Star contactor (Star/triangle start up)
21 Pump motor thermal relay
22 Auxiliary contacts (Star/triangle start up)
23 Fuel selector
24 Star/triangle start-up line contactor
25 Fan motor cables sheath
26 Flame sensor sheath
27 Servomotor sheath
28 Maximum gas pressure switch sheath
29 Safety valve sheath (VS1)
30 Return line valve sheath (VR)
31 Working valve sheath (VF)
32 Safety valve sheath (VS)
33 Maximum oil pressure switch sheath
34 Minimum oil pressure switch sheath
35 Pump motor cables sheath
15
GB
9
10
16
28
14
6
30
29
31
32
33
34
35
15
6
Fig. 6
20084880
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