Pump Characteristics; Pressure Loss Diagram; Sizing Of Additional Expansion Vessels - Ferroli MODENA 80 E Installation, Servicing And User Instructions Manual

.06 Pump ara eris i s
he pump head available for circulating the
in g. .
N. . he pump is factory set at position .
rundfos type 15 50
No e inimum o through boiler heat exchanger at any time
should not fall belo 6 litres per minute.
If the total volume of
an additional expansion vessel must be
heating return pipe.
Pump per orma e ur e Gru d os PS 1
1 2 3
A

Pressure loss diagram

SAFET VALVE
SETTING ar
VESSEL A GE
P ESS E ar
INITIAL S STE
1.0
P ESS E ar
TOTAL ATE
EXPANSION VESSEL VOL
ONTENT o S STE
LI R S
25 .5
50 .0
5 10.5
100 14.0
125 1 .5
150 21.0
1 5 24.5
200 28.0
For s s . olumes o er a
0.140
ose gi e a o e mul . e s s .
olume e a or a ross
S series.
ater in the system exceeds 40 litres
tted to the central
Ava ab m h a C H
8
H
mbar x 100
7
6
5
4
3
2
1
0
.0
0.5 1.0
1.5 2.0 1.5 2.0
E li res
6.5 1 . 4. 10.
12.9 2 .5 9.5 20.6
19.4 41. 14.2 0.9
25.9 55.1 19.0 41.2
2.4 68.9 2 . 51.5
8.8 82.6 28.5 61.8
45. 96.4 .2 2.1
51.8 110.2 8.0 82.4
0.259 0.551 0.190 0.412
ater is given
he pump is a
0
0.5 1 1.5

SIZING OF ADDITIONAL EXPANSION VESSELS:

Deduct from the value given in the table the 8 litre
1.5
vessel supplied.
2.0
No e:
1. Fill C.H. installation to min. 1.5 bar.
. Select the expansion vessel for a system
8.
pressure of 2.0 bar.
16.5
. xpansion vessel must be tted to central
24.8
.1
heating return pipe.
41.
. he standard
49.6
charged to 1 bar.
5 .9
. he additional expansion vessel should be
66.2
charged to 1 bar.
0.
Q
3
m |h
2 2.5
litre expansion vessel is