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SAFETY VALVE
SETTING (bar)
VESSEL CHARGE
PRESSURE (bar)
INITIAL SYSTEM
1.0
PRESSURE (bar)
TOTAL WATER
EXPANSION VESSEL VOLUME (litres)
CONTENT of SYSTEM
LITRES
25
3.5
50
7.0
75
10.5
100
14.0
125
17.5
150
21.0
175
24.5
200
28.0
For syst. volumes other than
those given above, mult. the syst.
0.140
volume by the factor across
Pressure loss diagram
H
8
DOMINA 102 DGT
3.0
0.5
1.0
1.5
2.0
1.5
2.0
6.5
13.7
4.7
10.3
12.9
27.5
9.5
20.6
19.4
41.3
14.2
30.9
25.9
55.1
19.0
41.2
32.4
68.9
23.7
51.5
38.8
82.6
28.5
61.8
45.3
96.4
33.2
72.1
51.8
110.2
38.0
82.4
0.259
0.551
0.190
0.412
mbar x 100
8
7
6
5
4
3
2
1
0
0.5
SIZING OF ADDITIONAL EXPANSION VESSELS:
Deduct from the value given in the table the 10
1.5
litre vessel supplied.
2.0
Note:
1.
Fill C.H. installation to min. 1.5 bar.
2.
Expansion vessel must be fitted to central
8.3
heating return pipe.
16.5
24.8
3.
The standard 10 litre expansion vessel is
33.1
charged to 1 bar.
41.3
4.
The additional expansion vessel should be
49.6
charged to 1 bar.
57.9
66.2
0.33
1
1.5
2
Fig. 7
Q
3
m |h
2.5
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