1.4
FUNCTIONAL DIAGRAM (fig. 2)
KEY
1 Fan
2 Primary exchanger
3 C.H. sensor (SM1/SM2)
4 Combustion chamber
5 Gas valve
6 Micro-tank 15 litre
7 Magnesium anode
8 Deviator valve
10 Circulator with air release vent
11 D.H.W. sensor (SB)
14 3 BAR safety valve
15 Water pressure switch
16 By-pass
17 Boiler discharge
62
18 Expansion vessel
20 Connection plate (optional)
21 D.H.W. cock (optional)
22 Gas cock (optional)
23 C.H. flow cock (optional)
24 C.H. return cock (optional)
25 Loading system
26 Mixing valve
CONNECTIONS
U D.H.W. outlet
E D.H.W. inlet
G Gas connection
M C.H. flow
R C.H. return
Fig. 2