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LIH 10TE
7.4.3 Installing the strap-on sensor
It is only necessary to mount the strap-on sensors if they are
included in the scope of supply of the heat pump but have not yet
been installed.
The strap-on sensors can be fitted as pipe-mounted sensors or
installed in the immersion sleeve of the compact manifold.
Mounting as a pipe-mounted sensor
Remove paint, rust and scale from heating pipe.
Coat the cleaned surface with heat transfer compound
(apply sparingly).
Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate.
7.4.4 Hydraulic distribution system
The compact manifold and the dual differential pressureless
manifold function as an interface between the heat pump, the
heating distribution system, the buffer tank and, in some cases,
even the hot water cylinder. A compact system is used to simplify
the installation process, so that a lot of different components do
not have to be installed individually. Further information can be
found in the relevant installation instructions.
Compact manifold
The return sensor can remain in the heat pump, or should be
installed in the immersion sleeve. The remaining empty space
between the sensor and the immersion sleeve must be filled
completely with heat transfer compound.
Dual differential pressureless manifold
In order for the heating circuit pumps of the generator and
consumer circuits to supply the flow to the return sensor, this
must be installed in the immersion sleeve of the dual differential
pressureless manifold.
7.5 Electrical connection
7.5.1 General
All electrical connection work must be carried out by a trained
electrician or a specialist for the specified tasks in accordance
with the
installation and operating instructions,
country-specific installation regulations (e.g. VDE 0100),
technical connection conditions of the energy suppliers and
supply grid operators (e.g. TAB) and
local conditions.
EN-8
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 to N1-J26 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 electrical 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 voltage). 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 terminals (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 that there is a clockwise rotating field: With incorrect wiring the
starting of the heat pump is prevented. A corresponding warning is
indicated on the display of the heat pump manager (adjust wiring).
On delivery, the 2nd heat generator is connected with a
2 kW heat output. To increase the output to 4 kW or 6 kW,
the copper bridges included in the scope of supply must be
connected as shown in the circuit diagram.
For detailed information, refer to the circuit diagrams in the
appendix.
2)
The three-core electrical 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.
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! Extra-low voltage!
4)
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.
452165.66.01 · FD 9502
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