46
. Operating modes and performance characteristics
CPA-E and CPA-E S PWM series
Operating Characteristic Features
mode
AUTO Between highest With AUTO the pump performance will
(default- and lowest automatically adapt to the system
setting) proportional - requirements within a defined range.
pressure
characteristic
BL Lowest proportional The operating point of the pump will be on the lowest
pressure proportional pressure characteristic depending on the
characteristic required flow rate. If the flow rate requirements are
low, the pump will reduce its pressure. If the flow rate
requirements increase, the pressure will increase, too.
BL Highest proportional The operating point of the pump will be on the
pressure highest proportional pressure characteristic
characteristic depending on the required flow rate.
HD Lowest constant The operating point of the pump is on the lowest
pressure constant characteristic. The pump pressure remains
characteristic constant and is independent of the flow rate.
HD Highest constant The operating point of the pump is on the lowest
pressure constant characteristic. The pump pressure remains
characteristic constant and is independent of the flow rate.
III Level III The pump is operating at constant speed and
maximum power. This level can be used to
bleed the pump very quickly.
II Level II The pump is operating at constant speed
and medium power.
I Level I The pump is operating at constant speed
and minimum power.
If all preconditions are met, the pump will
automatically set night mode.
PWM Control The pump performance is controlled by an exgternal
PWM signal.
If the PWM signal fails, the previously active mode
will be reactivated.
GB
High-efficiency heating and solar circulation pumps
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