Guide To Performance Curves; Performance Curves In Relation To Pump Setting - Grundfos ALPHA2 L Series Installation And Operating Instructions Manual

Each pump setting has its own performance curve (Q/H curve).
A power curve (P1 curve) belongs to each Q/H curve. The power curve
shows the pump power consumption (P1) in Watt at a given Q/H curve.
The P1 value corresponds to the value that can be read from the pump
display, see fig. 15:
POWER AUTO
H
P 1

Performance curves in relation to pump setting

PP1
PP2
(factory setting)
CP1
CP2
III
II
I
For further information about pump settings, see
ON
ADAPT
PP1 CP1
PP2 CP2
I
I
Lowest proportional-pressure curve
Highest proportional-pressure curve
Lowest constant-pressure curve
Highest constant-pressure curve
Constant speed, speed III
Constant speed, speed II
Constant speed, speed I
26
III
II
Q
III
II
Q
.