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4. INSTALLATION AND ELECTRICAL CONNECTION
3. DESCRIPTION AND FUNCTION
Control modes
Variable differential pressure (Δp-v):
The differential-pressure setpoint H is increased linearly over the permit-
ted volume flow range between ½H and H (Fig. 2a, 2c, 2e). The differential
pressure generated by the pump is adjusted to the corresponding differen-
tial-pressure setpoint.
Constant differential pressure (Δp-c):
The differential-pressure setpoint H is kept constant over the permitted
volume flow range at the set differential-pressure setpoint up to the maxi-
mum pump curve (Fig. 2, 2b, 2d).
GBGB
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