Grundfos UPM3S Series User Manual

System analyser
From the preset reference duty point, the pump will
immediately start to analyse the heating pattern.
The system resistance (K
sys
) is logged and based on this
data, a more optimal curve for operation is selected.
Note: K
sys
= m
3
/h to create a system pressure loss of 1
bar.
30 30.5 31 31.5 32 32.5 33 33.5 34
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Area A
Area B
A
TM060845
K
sys
-values logged for the system analyser
Pos. Description
X-axis Time [days]
Y-axis K-value
A Reference duty point
If the actual duty point deviates from the reference duty
point over time, the pump will automatically adjust its
performance accordingly. If a tendency of operation in
area A is shown, the performance of the pumps is too
high. The pump will then select a lower proportional curve.
In other words, if the requirement of the heating system
exceeds the reference duty point, the pump will choose a
higher proportional pressure curve. Should the
requirement be lower, a lower curve will be chosen.
Curve selector
A
B
H
Q
A
B
H
Q
1
TM060849
Duty point on selected proportional pressure curve
Pos. Description
1 Reference curves
Note: The arrows symbolise the change of the
proportional pressure curve.
New reference setting
When changing the proportional pressure curve setting to
adapt to the requirements of the heating system,
AUTO
ADAPT
automatically sets a new reference duty
point. From the new setting, the process starts over again:
AUTO
ADAPT
will continuously adapt to changes in the
heating pattern.
H
Q
TM060850
New lower proportional pressure curve
UPM3
8
33
Control modes, operating panel and settings

Grundfos UPM3S Series Specifications

General

Brand	Grundfos
Model	UPM3S Series
Category	Water Pump
Language	English