73
6
12
11
10
9
8
7
5
4
3
2
1
13
14
3
15
1
11
9
17
18
16
10
2
12
Fig. 3
1.5
MAIN COMPONENTS
“25 OF” model
“25 BF - 30 BF” model
KEY
1 Control panel
2 Ignition transformer
3 Combustion chamber
4 Fan
5 Combustion analysis intakes
6 Negative pressure intake
7 Positive pressure intake
8 Smoke pressure switch
9 C.H. sensor (SM)
10 Main exchanger (vers.
“BF”
)
Bithermal exchanger (vers.
“OF”
)
11 100°C safety stat
12 Gas valve
13 Flow water switch
14 Divertor valve
15 Water pressure switch
16 D.H.W. probe (SS)
17 Smoke chamber
18 Smoke stat
