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4 Electrical installation work for the heat pump
4.1 Electrical installation work
1)
The up to 5-core electricity supply cable for the power
element of the heat pump is fed from the electricity meter of
the heat pump via the utility blocking contactor (if required)
in to the heat pump (see heat pump manual for the supply
voltage).
The power supply for the heat pump must contain an all-pole
shut-off with a contact opening distance of at least 3 mm
(e.g. utility blocking contactor, power contactor), as well as
an all-pole circuit breaker with shared triggering of all outer
conductors
(release
current
accordance with device information).
2)
The three-core electricity supply cable for the heat pump
manager (heating controller N1) is fed into the heat pump
(devices with integrated controller) or to the future mounting
location of the heat pump manager (WPM).
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump
manager must have a constant voltage. For this reason, it
should be tapped upstream from the utility blocking
contactor or be connected to the household current, as
important protection functions may otherwise be lost during
a utility block.
3)
The utility blocking contactor (K22) with 3 main contacts (1/
3/5 // 2/4/6) and an auxiliary contact (NO contact 13/14)
should be dimensioned according to the heat pump output
and must be supplied by the customer. The NO contact of
the utility blocking contactor (13/14) is looped from terminal
strip X3/G to connector terminal N1-J5/ID3. CAUTION! Low
voltage!
4)
The contactor (K20) for the immersion heater (E10) of mono
energy systems (HG2) should be dimensioned according to
the radiator output and must be supplied by the customer. It
is controlled (230 V AC) by the heat pump manager via
terminals X1/N and N1-J13-NO4.
and
characteristics
in
452115.66.29 FD 9504
5)
The
contactor (K21) for the flange heater (E9) in the
domestic hot water cylinder should be dimensioned
according to the radiator output and must be supplied by the
customer. It is controlled (230 V AC) by the heat pump
manager via terminals X1/N and N1/J13-NO5.
6)
The contactors mentioned in points 3, 4 and 5 are installed
in the electrical distribution system. The mains cables for the
heating elements should be dimensioned and protected
according to DIN VDE 0100.
7)
The heat circulating pump (M13) is connected to terminals
X1/N and KM13/14.
8)
The domestic hot water circulating pump (M18) is connected
to the terminals X1/N and KM18/14.
9)
A demand sensor (R2.2) is required to operate the heat
pump. It is connected to the terminals N1-J2/U2 and X3/
GND.
10) The external sensor (R1) is connected to terminals X3/GND
(ground) and N1/J2-U1.
11) The domestic hot water sensor (R3) is installed in the
domestic hot water cylinder and is connected to terminals
X3/GND (Ground) and N1/J2-U3.
NOTE
When using three-phase current pumps, a power contactor can be
activated with the 230 V output signal of the heat pump manager.
Sensor cables can be extended to up to 50 m in accordance with the
dimensioning parameters.
NOTE
Further information on the wiring of the heat pump manager is available
in the electrical documentation.
ATTENTION!
The communication cable is necessary for the function of air-to-water
heat pumps in outdoor installation. It must be shielded and laid
separately from the mains cables. It is connected to n1-J25. For further
information, see electrical documentation
WPM Econ5S
EN-5
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