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Power supply
You may need to notify your local
power supply company of the heat
pump connection. All electrical
installation work, particularly earthing
measures, must be carried out in
accordance with local and national
regulations and the requirements of
your local power supply company.
the connection must comply with
the power connection diagram. Also
observe the installation instructions.
terminals are located inside the heat
pump control panel and become
accessible by removing the front cover.
the following are connected there:
the heat pump power supply (400 V)
the brine pump power supply (400 V)
the control power supply (230 V)
the enable signal (230 V)
heating circuit pump (230 V)
the mixing valve (230 V)
the oil or gas boiler (230 V)
various sensors and remote control
units
Electrical specification of the heat pumps
Heat pump
Power
consumption
Max. operating
current
starting
current r start
Power cable
Fuse
protection
type
kw
A
A
mm²
A
wPF 20
8.2
15
55
5 x 6.0 *
C 35A all poles
wPF 27
10.7
19
60
5 x 6.0 *
C 35A all poles
wPF 40
17.4
30
60
5 x 6.0 *
C 35A all poles
wPF 52
20.5
32
65
5 x 10.0 *
C 50A all poles
wPF 66
25.5
41
80
5 x 10.0 *
C 50A all poles
* Cable cross-section acc. to type of routing (observe VDe 0298-4 [or local regulations])
powEr SUpply wpf 20/27/40/52/66
WPF 20-66
3/n/Pe
230V ~ 50Hz
Domestic meter
Control phase l
w/o power-oFF
period
Control phase l´
with power-oFF
period
3/n/Pe
400V ~ 50Hz
Heat pump
electricity meter
M1 = Circulation pump (max. 2A gl)
M2 = Circulation pump (three-phase)
supply from the heat pump meter
t(A)
outside temperature sensor
n
Power supply
b1
temperature sensor heat pump flow l
Power supply
b2
temperature sensor heat pump return eVU
enable signal
t (ww)
temperature sensor, DHw
l UP
Pumps l
t(2.we) temperature sensor for Hs 2
Puffer 1 buffer primary pump
t (Q)
temperature sensor heat source
Puffer 2 buffer primary pump
t(MK)
temperature sensor, mixer circuit
QKP
source circuit pump
impuls
Pulse, heat meter
HKP
Heating circuit pump
Fern1
remote control
MKP
Mixer circuit pump
Fern3
remote control
ww
DHw primary pump
H
bUs high
ZKP
DHw circulation pump
l
bUs low
2.we
Heat source 2
–
bUs ground
M(A)
Mixer open
+
bUs (not connected)
M(Z)
Mixer closed
t (s)
temperature sensor, solar/cooling
KoKP
solar/cooling
t (K)
solar temperature sensor
Summary of Contents for Heat pumps
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