7
3
2
1
13
10
11
12
6
5
14
4
15
8
7
5
4
6
3
2
1
10
9
11
12
15
FORMAT OF
FORMAT BF
“30” model
75
2
3
4
22
U
21
17
19
18
13
15
12
16
6
5
14
10
9
11
8
7
1
20
E
G
M
R
23
1.4
FUNCTIONAL DIAGRAM
Fig. 2
KEY
1 Fan (vers.
“BF”
)
2 Water-gas exchanger
3 Combustion chamber
4 Gas valve
5 D.H.W. exchanger
6 Divertor valve with charging
7 NTC sensor
8 100°C safety stat
9 Air relief valve
10 Circulation pump
11 Expansion vessel
12 Safety valve
13 Boiler discharge
14 Flowmeter
15 Thermomanometer
16 Automatic by-pass
17 D.H.W. filter
18 C.H. return cock (optional)
19 C.H. flow cock (optional)
20 D.H.W. cock (optional)
21 Gas cock (optional)
22 Fixing jig
23 C.H. water filter
1.5
MAIN COMPONENTS
Fig. 3
KEY
1 Control panel
2 Divertor valve
3 Flowmeter
4 100°C safety stat
5 Water-gas exchager
6 C.H. sensor (SM)
7 Combustion chamber
8 Fan (vers.
“BF”
)
9 Smoke pressure switch (vers.
“BF”
)
10 Gas valve
11 D.H.W. exchager
12 Circulating pump
13 Smoke chamber (vers.
“OF”
)
14 Smoke stat (vers.
“OF”
)
15 C.H. water filter
