Ecodan 150 Standard - Constant Curve; Proportional Pressure; Constant Pressure; Control Mode Explanation

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Graph 1 - UPM3 performance curve
Control Mode explanation
Proportional pressure
The head pressure is reduced at falling heat demand
and increased at rising heat demand.
The duty point of the circulator will move up or down on
the selected proportional pressure curve depending on
the heat demand in the system.
• PP1: lowest proportional
pressure curve
• PP2: Intermediate
proportional pressure
curve
• PP3: Highest proportional
pressure curve
Constant pressure
The head pressure is kept constant, irrespective of the
heat demand.
The duty point of the circulator will move out or in on
the selected constant pressure curve, depending on the
heat demand in the system.
• CP1: lowest constant
pressure curve
• CP2: Intermediate
constant pressure curve
• CP3: Highest constant
pressure curve
Constant curve
The circulator runs on a constant curve, which means
that it runs at a constant speed or power.
The duty point of the circulator moves up or down the
selected curve, depending on the heat demand in the
system.
Constant
Curve
CC1 4 m
CC2 5 m
CC3 6 m
CC4
(max.)
7 m
Constant
Curve
CC4
(max.)