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The table below shows the ALPHAx models with built-in functions.
6.4.2 Type key
Functions/features
Model B
2012
Model C
2015
Model D
2015
ALPHA3 model A
2015
AUTO
ADAPT
●●●●
Proportional pressure ●●●●
Constant pressure ●●●●
Constant curve ●●●●
Automatic night setback ●●●●
Manual summer mode ●●●
Dry-running protection ●●
ALPHA Reader ●
High-torque start ●●
ALPHAx XX-40 ●●●●
ALPHAx XX-50 ●●●●
ALPHAx XX-60 ●●●●
ALPHAx XX-80 ●●●
Example ALPHAx 25 -40 N 180
Pump type
Blank: Standard version
L: Limited version
Nominal diameter (DN) of inlet and outlet
ports [mm]
Maximum head [dm]
Blank: Cast-iron pump housing
A: Pump housing with air separator
N: Stainless-steel pump housing
Port-to-port length [mm]
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