6. Control functions
6.1 Operating panel
TM067286
Operating panel
Symbol
Description
Button
I, II, III
Constant curve or constant speed curve I, II and III
Radiator heating mode (proportional pressure)
Underfloor heating mode (constant pressure)
The operating panel shows the following:
•
The control mode, after pressing the button
•
Alarm status.
6.1.1 Alarm or warning
If the pump has detected one or more alarms or warnings, the first
LED switches from green to red. When the fault has been resolved
the operating panel switches back to operating status.
See section Fault finding the product.
Related information
6.2 Control modes
The pump has seven different control modes. Learn more about
them in the following sections.
6.2.1 Radiator heating mode (factory setting)
The radiator heating mode adjusts the pumps performance to the
actual heat demand in the system following a proportional-pressure
curve.
Q
H
TM068815
Proportional-pressure curve
System type
Recommended
control mode
Alternative control mode
Two-pipe sys-
tem
Radiator heating
mode
Constant curve or constant
speed, I, II or III. See section
Related information
6.2.3 Constant curve or constant speed, I, II or III
6.2.2 Underfloor heating mode
The underfloor heating mode adjusts the pump performance to the
actual heat demand in the system following a constant-pressure
curve.
Q
H
TM068816
Constant-pressure curve
System type
Recommended
control mode
Alternative con-
trol mode
Underfloor heating sys-
tem
Underfloor heating
mode
No alternatives
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