Ferroli Modena 80 E Manuel D’Utilisation
MODENA 80 E
8
Fig. 8
Pressure loss diagram
SIZING OF ADDITIONAL EXPANSION VESSELS:
Deduct from the value given in the table the 8 litre
vessel supplied.
Deduct from the value given in the table the 8 litre
vessel supplied.
Note:
1.
1.
Fill C.H. installation to min. 1.5 bar.
2.
Select the expansion vessel for a system
pressure of 2.0 bar.
pressure of 2.0 bar.
3.
Expansion vessel must be fitted to central
heating return pipe.
heating return pipe.
4.
The standard 7 litre expansion vessel is
charged to 1 bar.
charged to 1 bar.
5.
The additional expansion vessel should be
charged to 1 bar.
charged to 1 bar.
SAFETY VALVE
SETTING (bar)
SETTING (bar)
VESSEL CHARGE
PRESSURE (bar)
PRESSURE (bar)
INITIAL SYSTEM
PRESSURE (bar)
PRESSURE (bar)
TOTAL WATER
CONTENT of SYSTEM
CONTENT of SYSTEM
3.0
0.5
1.0
1.5
1.0
1.5
2.0
1.5
2.0
2.0
EXPANSION VESSEL VOLUME (litres)
LITRES
25
3.5
6.5
13.7
4.7
10.3
8.3
50
7.0
12.9
27.5
9.5
20.6
16.5
75
10.5
19.4
41.3
14.2
30.9
24.8
100
14.0
25.9
55.1
19.0
41.2
33.1
125
17.5
32.4
68.9
23.7
51.5
41.3
150
21.0
38.8
82.6
28.5
61.8
49.6
175
24.5
45.3
96.4
33.2
72.1
57.9
200
28.0
51.8
110.2
38.0
82.4
66.2
0.140
0.259
0.551
0.190
0.412
0.33
For syst. volumes other than
those given above, mult. the syst.
volume by the factor across
those given above, mult. the syst.
volume by the factor across
m |h
3
Q
8
7
6
5
4
3
2
1
0
0.5
1.5
2.5
1
2
H
mbar x 100
2.06 Pump characteristics
The pump head available for circulating the water is given in fig. 7.
N.B. - The pump is factory set at position 3. The pump is a
Grundfos type 15-50 UPS series.
Grundfos type 15-50 UPS series.
Note - Minimum flow through boiler heat exchanger at any time
should not fall below 6 litres per minute.
should not fall below 6 litres per minute.
If the total volume of water in the system exceeds 40 litres an
additional expansion vessel must be fitted to the central heating
return pipe.
additional expansion vessel must be fitted to the central heating
return pipe.
Pump performance curve Grundfos UPS 15-50
Fig. 7
1 2 3 Speed settings
A
A
Boilers pressure drop
B
Available pump head C.H.