1.4
LOSS OF HEAD
25
20
15
10
5
0
1.5
FUNCTIONAL DIAGRAM
U
C
E
11
9
10
KEY
1
Burner
2
Boiler
3
Boiler thermometer
4
Boiler drain
36
1000
2000
12
M
8
5
Non-return valve
6
Automatic air vent
7
D.H.W. pump
8
Magnesium anode
9
D.H.W. tank drain
3000
4000
13
2
6
6
5
7
R
4
10
D.H.W. storage tank
11
D.H.W. tank expansion vessel
12
D.H.W. tank safety valve
13
Hydrometer
5000
6000
Flow (l/h)
Portata (l/h)
3
60
40
80
20
100
0
120
1
Fig. 2/a
Fig. 2