1.5
FUNCTIONAL DIAGRAM
1.5. 1
SOLO 25 BF TSE version (fig. 3)
C1
M
R
1.5.2 DUETTO 25 BF TSE version (fig. 3/a)
74
KEY
1 Boiler body
2 Filling
3 Heating safety valve
4 Air relief valve
5 Expansion vessel
6 Gas-oil burner
7 C.H. pump
8 Hydrometer
9 Boiler drainer cock
10 Water pressure transducer
11 Control valve
C1 Loading system
M
C.H. flow
R
C.H. return
KEY
1 Boiler body
2 Filling
3 Heating safety valve
4 Air relief valve
5 Expansion vessel
6 Gas-oil burner
7 C.H. pump
8 Hydrometer
9 Boiler drainer cock
10 Water pressure transducer
11
D.H.W.
pressure
12 Instant tank
13 Control valve
14 Manual air vent
15 Tank pump
U
D.H.W. outlet
E
D.H.W. inlet
M
C.H. flow
R
C.H. return
Fig. 3
Fig. 3/a