English (GB)
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11. Performance curves
11.1 Guide to performance curves
Each control mode has a performance range (Q, H) within which
a performance curve is selected. Control modes with AUTO
ADAPT
automatically select a performance curve within the performance
range.
A power curve, P1, belongs to each QH curve. The power curve
shows the pump power consumption in watt at a given QH curve.
The P1 value corresponds to the value that you can read from the
pump display.
11.2 Curve conditions
The guidelines below apply to the performance curves on the
following pages:
• Test liquid: airless water.
• The curves apply to a density of 983.2 kg/m
3
and a liquid
temperature of 60 °C.
• All curves show average values and must not be used as
guarantee curves. If a specific minimum performance is
required, individual measurements must be made.
• The curves for speeds I, II and III are marked.
• The curves apply to a kinematic viscosity of 0.474 mm
2
/s
(0.474 cSt).
• The conversion between head, H [m], and pressure, p [kPa],
has been made for water with a density of 1000 kg/m
3
. For
liquids with other densities, for example hot water, the outlet
pressure is proportional to the density.
• Curves are obtained according to EN 16297 part 2.
Constant curve
Control mode
Operating
panel
Curve
Setpoint
adjustment
Constant
curve
User defined
within range
1 % intervals set in
% of maximum
speed.
Constant pressure
Control mode
Operating
panel
Curve
Setpoint
adjustment
Underfloor
mode
Anywhere
within range
AUTO
ADAPT
Constant
pressure
User defined
within range
0.1 m intervals
Q [m³/h]
[m]
H
Q [m³/h]
[W]
P1
Operating range
Example of
constant curve
Automatic night
setback
Q [m³/h]
[m]
H
Q [m³/h]
[W]
P1
Operating range
Default curve
(factory setting)
Automatic night
setback
Proportional pressure
Control
mode
Operating
panel
Curve
Setpoint
adjustment
Radiator
mode
Anywhere
within range
AUTO
ADAPT
Radiator and
underfloor
mode
Anywhere
within range
Proportional
pressure
User defined
within range
0.1 m intervals
Q [m³/h]
[m]
H
Q [m³/h]
[W]
P1
Operating range
Default curve
(factory setting)
Automatic night
setback
