Italtherm CITY CLASS 20 F, Service Manual, Page: 27 / 32

Green Heating Technology
27 SERVICE M
anual City Class F-FR
Pump capacity diagram
FR
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
00381
A 00
pr
essur
e (m H
2
O)
pr
essur
e (m H
2
O)
water flow (l/h) water flow (l/h)
speed 3 - 2 of the pump
City Class 20 FR
City Class 25 FR
The graph is referred
to the capacity available
to the system.
DHW s
torage c
oil
CH s
ys
tem
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
00381
B 00
pr
essur
e (m H
2
O)
pr
essur
e (m H
2
O)
water flow (l/h) water flow (l/h)
speed 3 - 2 of the pump
City Class 30 FR
The graph is referred
to the capacity available
to the system.
DHW s
torage c
oil
CH s
ys
tem
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
0
1
2
3
4
5
6
7
0 200 400 1000 1200 600 800 1400
00381
C 00
pr
essur
e (m H
2
O)
pr
essur
e (m H
2
O)
water flow (l/h) water flow (l/h)
speed 3 - 2 of the pump
City Class 35 FR
The graph is referred
to the capacity available
to the system.
DHW s
torage c
oil
CH s
ys
tem