Pump Characteristics - Ferroli MODENA 80 E Installation, Servicing And User Instructions Manual
Copper wall-mounted combination, gas fired boiler for central heating and domestic hot water production, fan assisted, room sealed compartment, electronic flame ignition and control
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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.
Note - Minimum flow through boiler heat exchanger at any time
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.
Pump performance curve Grundfos UPS 15-50
1 2 3 Speed settings
A
Boilers pressure drop
B
Available pump head C.H.
Pressure loss diagram
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
0.140
those given above, mult. the syst.
volume by the factor across
8
MODENA 80 E
8
H
mbar x 100
7
6
5
4
3
2
1
Fig. 8
0
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
0.5
1
1.5
2
SIZING OF ADDITIONAL EXPANSION VESSELS:
Deduct from the value given in the table the 8 litre
1.5
vessel supplied.
2.0
Note:
1.
Fill C.H. installation to min. 1.5 bar.
2.
Select the expansion vessel for a system
8.3
pressure of 2.0 bar.
16.5
3.
Expansion vessel must be fitted to central
24.8
heating return pipe.
33.1
4.
The standard 7 litre expansion vessel is
41.3
49.6
charged to 1 bar.
57.9
5.
The additional expansion vessel should be
66.2
charged to 1 bar.
0.33
Q
3
m |h
2.5
Fig. 7
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