Sonnenkraft 131220, Manual

Page: 30 / 116

30 GB
Setting the pump
Setting according to system type
Factory setting = AUTO
ADAPT
Recommended and alternative pump settings
Pos System type Pump setting
Recommended alternative
A
Underfloor
heating
AUTO
ADAPT
Upper constant pressure
curve (CP2) or lower
constant pressure
curve (CP1)
B Two-pipe system AUTO
ADAPT
Upper proportional
pressure curve (PP2)
C One-pipe system Lower constant pressure
curve (CP1)
Upper constant pressure
curve (CP2)
AUTO
ADAPT
(underfloor heating and two-pipe sys-
tems)
The AUTO
ADAPT
- function adjusts the pump performance to
the current heat demand issued by the heating system.
As the performance is adjusted gradually over a pro-
longed period, it is recommended to maintain the AUTO
A-
DAPT
pump setting for at least a week before it is changed.
The pump saves the last setpoint in AUTO
ADAPT
. If you
decide to revert to the AUTO
ADAPT
setting, the pump will
start again with this value and continue to automatically
adjust the level of performance.
Changing from the recommended to the alternative
pump setting
Heating systems respond slowly to changes, therefore an
optimum pump setting cannot be produced within a few
minutes or hours. If the desired heat output is not pro-
duced in the individual rooms of the house at the recom-
mended pump setting, change to the alternative pump
setting.
Pump control
During operation the pump group is controlled in accor-
dance with the principle of „proportional pressure control
(PP)“ or „constant pressure control (CP)“.
These control types are used to adjust the pump perfor-
mance and thus the power consumption of the pump to
the heat demand issued by the system.
Proportional pressure control
This control type regulates the differential pressure over
the pump depending on the flow rate. The proportional
pressure curves are indicated by PP1 and PP2 in the Q/H
diagram.