Pump Characteristics; Grundfos Pump Performance Graph - Ferroli Modena 102 Installation, Servicing And User Instructions Manual

2.0 entra heatin ad ustment not normally re uired
To ad ust boiler heat input thus also regulating heat output to the central heating water simply ad ust the main
burner via the electronic control board fi g.
The diagrams indicate the variation in heat output to the water as burner wor ing pressure is varied.
Ad usting boiler output to the actual re uirements of the central heating system will minimise boiler
cycling thus saving fuel varying the output has virtually no effect on the efficiency and combustion
characteristics of the boiler.
ia ram f pressures
and utputs ith atura
14
13
12
11
10
9
8
7
6
5
4
3
2
12 13 14 15 16 17 18 19 20 21 22 23 24
kW
kcal/h
11 12 13 14 15 16 17 18 19 20 21
x 1000

2.05 Pump characteristics

The pump head available for circulating the water
is given in fi g. 6.
. . - The pump is factory set at position 3. The pump
is a Grundfos type 15-50 UPS series.

Grundfos Pump performance graph

te - inimum ow through boiler heat e changer at
any time should not fall below 6 litres per minute.
f the total volume of water in the system e ceeds 0
litres an additional e pansion vessel must be fi tted to
the central heating return pipe.
Pump perf rmance curve Grundf s UPS 15-50
1 2 Speed settings
A oilers pressure drop
Available pump head C.H.
5 and see paragraph 5.0 page
as
25 26 27 28 29 30 31
22 23 24 25 26
.
ia ram f pressures and utputs
ith PG Pr pane
35
30
25
20
15
10
5
12 13 14 15 16 17 18 19 20 21 22 23
kW
kcal/h
11 12 13 14 15 16 17
X 1000
24 25 26 27 28 29 30
18 19 20 21 22 23 24 25 26