Setting In Connection With Pump Replacement - Grundfos UPE 2000 Series Montage- Und Betriebsanleitung

In systems
for instance ...
with ...
1. Two-pipe
heating sys-
tems with
thermostatic
valves and
with:
relatively great
head losses in
the boiler circuit
and the distribu-
tion pipes
2. Underfloor heating systems and one-pipe heating systems with ther-
mostatic valves and great head losses in the boiler circuit.
3. Primary circuit pumps in systems with great head losses in the pri-
mary circuit.
1. Two-pipe
heating sys-
tems with
thermostatic
valves and:
relatively small
head losses in
the boiler circuit
and the distribu-
tion pipes
2. Underfloor heating systems with thermostatic valves.
3. One-pipe heating systems with thermostatic valves or pipe balancing
valves.
4. Primary circuit pumps in systems with small head losses in the pri-
mary circuit.
6.2.1 Setting in connection with pump
replacement
If an uncontrolled pump is to be replaced with a UPE
Series 2000, settings can be made according to the
tables below.
Existing pump at maximum speed
Existing
UPE Series 2000
pump
Maximum
Setting of
head
head [m]
[m]
3 2
4 2
5 2.5
6 3
7 3.5
8 4
9 4.5
10 5
11 5.5
12 6
• a dimensioned pump head higher than 4 metres,
• very long distribution pipes,
• strongly throttled pipe balancing valves,
• differential pressure regulators,
• great head losses in those parts of the system
through with the total quantity of water flows (e.g.
boiler, heat exchanger and distribution pipe up to
the first branching) or
• low differential temperature.
• with a dimensioned pump head lower than 2 me-
tres,
• dimensioned for natural circulation,
• with small head losses in those parts of the system
through with the total quantity of water flows (e.g.
boiler, heat exchanger and distribution pipe up to
the first branching) or
• modified to a high differential temperature (e.g. dis-
trict heating).
Existing
pump
Maximum
Setting of
head
control mode
Constant pressure
Constant pressure
Proportional pressure
Proportional pressure
Proportional pressure
Proportional pressure
Proportional pressure
Proportional pressure
Proportional pressure
Proportional pressure
Existing pump at reduced speed
UPE Series 2000
Setting of
head [m]
[m]
3 1.5 Constant pressure
4 1.5 Constant pressure
5 2 Constant pressure
6 2 Constant pressure
7 2.5 Proportional pressure
8 3 Proportional pressure
9 3.5 Proportional pressure
10 3.5 Proportional pressure
11 4 Proportional pressure
12 4 Proportional pressure
select this con-
trol mode ...
Proportional
pressure
Constant
pressure
Setting of
control mode
149