Frost Protection - Dimplex Lia 0608Hxcf M Montage- Und Gebrauchsanweisungen

LIA 0608HXCF M - LIA 1316HXCF M
7.2.2 Indoor unit
Two supply cables must be connected to the indoor unit: The
power supply for the electric heating element and the control
voltage for the integrated heat pump manager. (Load: 3~; 1x 5-
core; control: 1~; 1x three-core) The VDE directives and regula-
tions and local conditions must be taken into account in the de-
sign and installation of the cables.
NOTE
The indoor unit can be configured for single-phase operation
if required. For more detailed information, please refer to the
enclosed electrical documentation.
NOTE
The positions of the copper connection bridges in the
terminals for the power supply must be complied with. The
copper connection bridges are not connected when the unit
is delivered in the factory default condition and are included
with the unit. The copper connection bridges connected as
soon as the pipe heating is operated at 230 V.
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 voltage). An
all-pole disconnecting device with a contact gap of at least 3
mm (e.g. utility blocking contactor or power contactor) 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 compliance with
the device information).
The supply cable (1~L/N/PE~230 V, 50 Hz) for the heat pump
manager must have a continuous voltage. For this reason, it
should be tapped upstream from the utility blocking contactor
or be connected to the household current, because otherwise
important protection functions could be lost during a utility
block. The correct control voltage must be ensured according
to the general information leaflet/rating plate.
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 on-site. The NO contact of the utility blocking con-
tactor (13/14) is connected to pin (1) (=DI1) of function block 0
(grey). CAUTION! Extra-low voltage!
The power supply must be connected to terminal strip X1 and
the control voltage to terminal X1.1 230 V: IN on the indoor unit.
For detailed instructions on how to connect the external com-
ponents as well as how the heat pump manager functions,
please refer to the device connection diagram and the operat-
ing instructions supplied with the heat pump manager.
The 2nd heat generator is set to 6 kW heat output in the factory
default condition. To reduce the output to 4 kW or 2 kW, one or
both connection lines should not be connected and the ends
should be insulated.
For detailed information, see circuit diagrams in the attach-
ment.
The electrical cables can be fed into the device from above (up-
stream of the drinking water connections).
www.dimplex.eu
Connecting electronically regulated circulating
pumps
Electronically regulated circulating pumps may have high start-
ing currents, which may reduce the service life of the heat
pump manager. If the starting current value is high, or is un-
known, install a coupling relay. The coupling relay must be sup-
plied by the customer. This is not necessary if the maximum
permissible operating current of the heat pump manager (see
specifications in the electrical documentation) is not exceeded
by the electronically regulated circulating pump or a relevant
approval has been issued by the pump manufacturer.
NOTE
The high-efficiency pumps (UPH) are supplied with the
relevant coupling relay for connecting and operating the
electronically regulated circulating pump.
CAUTION!
It is not permitted to connect more than one electronically
regulated circulating pump via a single relay output.

7.2.3 Frost protection

Regardless of the settings for the heat circulating pumps, they
always run in heating, defrost and frost protection mode. In sys-
tems with multiple heating circuits, the 2nd and 3rd heat circu-
lating pump has the same function.
CAUTION!
To ensure that the frost protection function on the heat pump
works properly, the heat pump manager must remain
connected to the power supply and flow must be maintained
through the heat pump at all times.
CAUTION!
The primary pump (M11 – responsible for the heat source flow
rate) and the secondary pump (M16 – responsible for the
warm/cold water flow rate) must always be clamped to the
heat pump manager in all cases. This is the only way to ensure
the pump flows and returns necessary for operation and to
ensure that the necessary safety measures are in place.
452172.66.05-EN · FD 0503
English
EN-19