E93.1001EN.C Manual CD
+
50
9.7
Pump selection – tables
Pump selection is important, because, in combination with the system’s total resistance, it sets the water velocity
in water heater and pipes. The right water velocity is essential for correct functioning and life time of the system.
P
UMP SELECTION
Select the pump for your CD
+
-installation using the following tables, by looking up, in the table that relates to the
CD
+
water heater type you installed, the applied combination of numbers of cascaded water heaters and tanks
1
.
Three pump types: P1 = Grundfos UPMXL GEO 25-125N-180
P2 = Grundfos UPS 32-100N
P3 = UPS 40-120 FB
CD
+
80
number of cascaded water heaters
1
2
3
4
5
6
7
8
1 tank
x
x
x
x
x
x
2 tanks
x
x
x
x
3 tanks
x
4 tanks
5 tanks
P1
6 tanks
7 tanks
8 tanks
CD
+
100
number of cascaded water heaters
1
2
3
4
5
6
7
8
1 tank
x
x
x
x
x
x
2 tanks
x
x
x
x
3 tanks
x
4 tanks
5 tanks
P2
6 tanks
7 tanks
8 tanks
CD
+
120
number of cascaded water heaters
1
2
3
4
5
6
7
8
1 tank
x
x
x
x
x
x
x
2 tanks
x
x
x
x
x
x
3 tanks
x
x
x
x
4 tanks
x
x
x
5 tanks
x
6 tanks
P2
7 tanks
8 tanks
CD
+
150
number of cascaded water heaters
1
2
3
4
5
6
7
8
1 tank
x
x
x
x
x
x
x
2 tanks
x
x
x
x
x
x
x
3 tanks
x
x
x
x
x
x
4 tanks
x
x
x
x
x
5 tanks
x
x
x
x
6 tanks
P2
x
x
x
7 tanks
x
x
x
8 tanks
x
x
NB!
An X in the pump table doesn’t necessarily mean that the corresponding installation cannot be built. If it can,
it will need specific design effort and pump selection. Please consult EHS for advice.
Table
F:
Pump table
Table is continued, p.t.o.
→
