Heating System Connection; Electrical Connection - Dimplex LIKI 14TE Instructions D'installation Et D'utilisation

6.3
The glass fibre reinforced concrete air ducts (intake-side duct
with 770 x 770 external dimensions) offered as accessories are
moisture-resistant and diffusion-free.
The sealing collar is used to seal the air ducts on the heat pump.
The air ducts are not screwed directly onto the heat pump. Only
the rubber seal comes into direct contact with the heat pump
when the system is installed correctly. This guarantees easy as-
sembly and disassembly of the heat pump and also ensures that
solid-borne sound is well insulated.
It must also be ensured that the interior side of the wall opening
is lined with thermal insulation to prevent the wall from becoming
cold and to prevent moisture from penetrating the wall.
The air outlet can be optionally mounted directly to an appropria-
tely constructed wall opening or to a longer duct (outlet-side duct
with 600 x 600 external dimensions, available as an accessory).
Use the same mounting procedure as for the air inlet.

6.3 Heating System Connection

The heat pump is connected to the heating system using 1 1/4"
externally-threaded flat gasket connections.
If the heat pump is not intended to be used to heat up the hot wa-
ter, the hot water output must be permanently sealed using sui-
table closing caps.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities, re-
sidue from sealants, etc. Any accumulation of deposits in the li-
quefier could cause the heat pump to completely break down.
An dual differential pressureless manifold is installed in the de-
vice for systems in which the heating waterflow can be shut off
via the radiator or thermostat valves. This ensures a minimum
heating water flow rate through the heat pump and helps to avoid
faults.
The installation of an external heat circulating pump is recom-
mended for standard operation of the heat pump.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
The integrated expansion vessel has a volume of 24 litres. This
volume is suitable for buildings with a living space area to be he-
ated of maximum 200 m².
The volume should be checked by the heating system techni-
cian. If necessary, an additional expansion vessel must be in-
stalled (according to DIN 4751, Part 1). The tables listed in the
manufacturers' catalogues simplify dimensioning the system on
the basis of the water content. Allow for a buffer tank volume of
120 litres when making the calculation.
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In the case of large-volume heating circuits, an additional expansion
vessel must be used to supplement the installed expansion vessel (24
litres, 1.0 bar admission pressure).
Antifreeze
A method of manual drainage (see illustration) should be provi-
ded for heat pumps which are exposed to frost. The antifreeze
function of the heat pump controller is active whenever the cont-
roller and the heat circulating pumps are ready for operation. If
the heat pump is taken out of service or in the event of a power
failure, the system has to be drained. The heating circuit should
be operated with a suitable antifreeze if heat pump systems are
implemented in buildings where a power failure can not be detec-
ted (holiday home).

6.4 Electrical Connection

The power supply and control voltage are supplied using stan-
dard cables (load: 4-core, control: 3-core).
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 circuits, provided that the bridges are re-
moved from the supply terminals (see circuit diagram in the ap-
pendix). Bridges A7.1 and A7.2 allow the pre-selection of two
performance levels for the integrated immersion heater (second
heat generator).
An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility blocking contactor or power contactor) as well
as a 3-pole circuit breaker with common tripping for all external
conductors must be installed in the power supply (tripping current
in compliance with the Device Information).
When connecting the device, ensure that the incoming supply
has a clockwise rotating field L1; L2; L3; L10; L20; L30.
In the event of an incorrect rotating field connection, the installed
electronics will prevent the HP being started or operated.
Ensure that there is a clockwise rotating field: Operating the compressor
in the wrong rotational direction could cause damage to the compressor.
The control voltage must be protected by a 10 A fuse. For de-
tailed information, see Circuit Diagrams in the Appendix.
ATTENTION!
ATTENTION!