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7.5 Electrical connection
7.5.1 General
During start-up, observe the respective national safety
regulations and the applicable VDE safety regulations,
particularly VDE 0100, as well as the technical connection
requirements of the utility companies (EVU) and network
operators!
To ensure that the frost protection function of the heat pump
works properly, the heat pump manager must remain connected
to the power supply and the flow must be maintained through the
heat pump at all times.
The switching contacts of the output relay are interference-
suppressed. Therefore, depending on the internal resistance of
the measuring instrument, a voltage can also be measured when
the contacts are open. However, this will be much lower than the
line voltage.
Extra-low voltage is connected to controller terminals N1-J1 to
N1-J11; N1-J24 and terminal strip X3. If, due to a wiring error, the
line voltage is mistakenly connected to these terminals, the heat
pump manager will be destroyed.
7.5.2 Electrical installation
1)
The supply cable for the output section of the heat pump (up
to 5-core) is fed from the electricity meter of the heat pump
via the utility blocking contactor (if required) into the heat
pump (see heat pump operating instructions for supply volt-
age). As delivered, the power supply can be taken from a
common mains circuit. As an option, the heat pump and the
second heat generator can be powered by separate cables,
provided that the bridges are removed from the supply termi-
nals (see circuit diagram in the appendix).
An all-pole disconnecting device with a contact gap of at
least 3 mm (e.g. utility blocking contactor or power contac-
tor) and an all-pole circuit breaker with common tripping for
all external conductors must be installed in the power supply
for the heat pump (tripping current and characteristic in com-
pliance with the device information).
When connecting the device, ensure that the incoming sup-
ply has a clockwise rotating field L1; L2; L3; L10; L20; L30.
ATTENTION!
Ensure the rotary field is clockwise when connecting the mains cables (if
the rotary field is not clockwise, the heat pump will not work properly, is
very loud and may cause damage to the compressor).
On delivery, the 2nd heat generator is connected with a
6 kW heat output. To reduce the output to 4 kW or 2 kW, the
copper bridges must be removed according to the circuit di-
agram.
For detailed information, refer to the circuit diagrams in the
appendix Cap. 3.2 on pag. VII.
2)
The three-core supply cable for the heat pump manager
(heating controller N1) is fed into the heat pump.
The correct control voltage must be ensured according to
the type plate. 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.
EN-9
All manuals and user guides at all-guides.com
3)
4)
5)
6)
7)
8)
9)
10) The external sensor (R1) is connected to terminals X3/GND
11) The domestic hot water sensor (R3) is included with the do-
452161.66.02 · FD 9203
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! Extra-low voltage!
The contactor (K21) for the flange heater (E9) in the 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 X2/N and N1-J16/NO10.
The contactors mentioned above in points 3 and 4 are
installed in the electrical distribution system. The mains
cables for the heating elements should be dimensioned and
protected according to DIN VDE 0100.
All cables must be installed as permanent wiring.
The heat circulating pump (M13) is connected to terminals
X2/N and N1-J13/NO 5.
The DHW loading pump (M18) is connected to terminals X2/
N and N1-J13/NO 6.
The return sensor (R2) is integrated into air-to-water heat
pumps for indoor installation.
The connection to the HPM is made at terminals X3/GND
and N1-J2/B2.
and N1-J2/B1.
mestic hot water cylinder and is connected to terminals X3/
GND and N1-J2/B3.
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