1.4
FUNCTIONAL DIAGRAM
22
1
2
3
4
17
20
21
U
E
KEY
1 Fan
2 Main exchanger
3 Combustion chamber
4 Gas valve
5 D.H.W. plate exchanger
6 Divertor valve with charging
7 C.H. sensor (SM)
8 100°C safety stat
9 Air relief valve
10 Pump
11 Expansion vessel
7
27
8
5
14
6
16
15
12
13
19
G
M
R
12 Safety valve
13 Boiler discharge
14 Water flow switch
15 Thermohydrometer
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
27 Aqua Guard Filter System
11
9
10
18
IT
ES
PT
GB
Fig. 2
69