User Guide

21
English (US)
8. Control functions
8.1 Quick overview of control modes
AUTO
ADAPT
• We recommend this control mode for most heating systems.
• During operation, the pump automatically makes the necessary
adjustment to the actual system characteristic.
For further
information, see
section
8.3.2 AUTO
ADAPT
.
FLOW
ADAPT
The FLOW
ADAPT
control mode combines a control mode and a
function:
• The pump is running in AUTO
ADAPT
• The delivered flow from the pump will never exceed a selected
FLOW
LIMIT
.
For further
information, see
section
8.3.3 FLOW
ADAPT
.
Proportional pressure
• This control mode is used in systems with relatively large pressure
losses in the distribution pipes.
• The head of the pump will increase proportionally to the flow in the
system to compensate for the large pressure losses in the
distribution pipes.
For further
information, see
section
8.3.4 Proportional
pressure.
Constant pressure
• We recommend this control mode in systems with relatively small
pressure losses.
• The pump head is kept constant, independent of the flow in the
system.
For further
information, see
section
8.3.5 Constant
pressure.
Constant temperature
In heating systems with a fixed system characteristic, for example
domestic hot-water systems, the control of the pump according to a
constant return-pipe temperature is relevant.
For further
information, see
section
8.3.6 Constant
temperature.
H
Q
H
auto_min
A
1
A
3
A
2
H
set1
H
set2
H
Q
Q
max
90 %
Q
max
25 %
H
auto_min
H
fac
Q
fac
H
Q
H
set
H
set
2
H
Q
H
Q