74
R
M
C1
Fig. 3
1.5
FUNCTIONAL DIAGRAM
1.5.1
SOLO 25 BF TSE version (fig. 3)
Fig. 3/a
1.5.2 DUETTO 25 BF TSE version (fig. 3/a)
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
