Brochure

To activate manual summer mode, press and hold the push-
button for three seconds. All light fields will turn off, and the
pump will stop. The AUTOAdapt light field will flash for four
seconds.
To deactivate manual summer mode, press the push-button
to return to normal operation.
5.2.2
Control modes, ALPHA1
Elements on the ALPHA1 user interface
3
4
2
1
PC XXXX
TM068878
Pos. Description
1
Display showing the power consumption in watt or the
flow
Light field indicating high and low flow
2
Production code:
- 1st and 2nd figures, year
- 3rd and 4th figures, week
3 Light field indicating constant pressure setting
4 Push-button for selection of pump setting
Display
The display is on when you have switched on the power
supply. The display shows the actual pump power
consumption in watt (integer) or the actual flow during
operation. If a fault is indicated after the fault is corrected,
the pump is reset by switching the power supply off and on.
If the pump impeller is rotated, for example, when filling the
pump with water, sufficient energy can be generated to light
up the display even if the power supply has been switched
off.
Light field indicating high and low flow:
• The light field blinks for low flow. If the flow is lower than
1 gpm, the light field flashes randomly between "0" and
"1".
• The light field shows "HI" for high flow. If the flow is
higher than 12 gpm, the light field shows "HI" on the
control panel.
Light fields indicating the pump setting:
• The pump has optional control modes with different
settings which are selected with the push-button. The
pump setting is indicated by light fields in the display.
Setting the pump
You can change the pump setting by pressing the push-
button.
Constant Pressure III, factory default setting - The
pump's factory default setting is the Constant Pressure III
setting. In this control mode, a constant differential pressure
across the pump is maintained irrespective of the flow. The
setting can be changed from the recommended factory
default setting to an alternative setting by pressing the
pump's push-button.
Changing from recommended to alternative pump
setting - Heating systems are "slow" systems that cannot
be set to the optimum operation within minutes or hours.
However, if the recommended pump setting in some
applications does not give the desired distribution of heat in
the rooms of the house, you can change to an alternative
pump setting.
ALPHA
5
22
Operation