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Energy bills have been increasing. There are still ways to reduce this.


Factory setting = highest proportional-pressure curve (PP2).

Recommended and alternative pump settings according to fig. 12:

Positions System type Recommended Alternative

Underfloor heating

Lowest constant-pressure curve (CP1)*

Highest constant-pressure curve (CP2)*


Two-pipe systems

Highest proportional-pressure curve (PP2)*

Lowest proportional-pressure curve (PP1)*


One-pipe systems

Lowest proportional-pressure curve (PP1)*

Highest proportional-pressure curve (PP2)*


Domestic water

Constant speed, speed I*

Constant speed, speed II or III*

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