COSMO
High
‐
efficiency
pump
CPH
2.0
48
8.1.2
Control
modes
Depending
on
system
requirements,
CPH
2.0
circulation
pumps
offer
the
following
control
modes.
The
required
control
mode
is
entered
via
the
CPH
2.0
control
panel.
Control
with
proportional
differential
pressure
as
a
function
of
actual
system
flow:
Control
with
constant
differential
pressure:
With
this
control
mode,
the
differential
pressure
is
increased
or
decreased,
depending
on
higher
or
lower
water
demand.
Setpoint
Hs
can
be
adjusted
via
the
external
display.
This
control
mode
is
suitable
for:
o
Heating
&
air
conditioning
systems
with
high
pressure
losses.
o
Plants
with
a
secondary
differential
pressure
controller.
o
Primary
circuits
with
high
pressure
losses.
o
Domestic
water
circulation
with
thermostatic
valves
in
the
riser
pipes.
Pressing
the
"Mode"
key
for
20
seconds
opens
the
"Extended
menu"
with
a
choice
of
6
proportional
differential
pressure
curves.
