Start-Up Procedure; Maintenance / Cleaning; Cleaning - Dimplex LIKI 14TE Instructions D'installation Et D'utilisation

LIKI 14TE

8.3 Start-up Procedure

The heat pump is started up via the heat pump manager. Adjust-
ments should be made in compliance with the instructions.
Operation with an external heat circulating pump
(recommended)
In this mode of operation, the internal circulating pump, in combi-
nation with the differential pressureless manifold, ensures a suf-
ficient continuous mimimum flow in the heat pump. The external
circulating pump (electronically-regulated installation is recom-
mended) ensures water flow in the heating circuit. The settings
and adjustments between the heat pump and the heating system
described in the following paragraph are not neccessary here.
Operation (only) with internal heat circulating
pump
In this mode of operation, the heating installation must ensure
the minimum water flow rate in the heat pump for all operating
conditions (e.g. external overflow valve).
For this, the following points must be observed:
 Close the stop-cock in the differential pressureless manifold.
 Reconnect the internal circulating pump (M16) from N09 to
N05, so that the heating pipe is permanently flushed with the
return flow sensor fitted to it.
When making the electrical connection, it must be ensured that
the internal circulating pump (M16) is reconnected from N09 to
N05 on the heat pump manager (in the switch box).
EN-12
The following additional start-up procedures must
also be carried out for operation with a circulating
pump:
Close all of the heating circuits that may also be closed during
operation (depending on the type of heat pump usage) so that
the most unfavourable operating state - with respect to the water
flow - is achieved. This normally means the heating circuits of the
rooms on the south and west sides of the building. At least one
heating circuit must remain open (e.g. bathroom).
At hot water temperatures under 7 °C, start-up is not possible.
The water in the buffer tank must be heated to a minimum
of 18 °C with the second heat generator.
To ensure a problem-free start-up, the following procedure is to
be implemented:
1) Close all consumer circuits.
2) Ensure that the heat pump has the correct water flow.
3) Use the manager to select the automatic operating mode.
4) In the special functions menu, start the "Start-up" program.
5) Wait until a return temperature of at least 25 °C has been
reached.
6) Now slowly reopen the heating circuit valves in succession
so that the heating water flow is constantly raised by slightly
opening the respective heating circuit. The heating water
temperature in the buffer tank must not be allowed to drop
below 20 °C during this process. This ensures that the heat
pump can be defrosted at any time.
7) When all heat circuits are fully open and a return tempera-
ture of at least 18 °C is maintained, the heat pump start-up
is complete.
ATTENTION!
Operating the heat pump at low system temperatures may cause the heat
pump to break down completely.
9

Maintenance / Cleaning

9.1 Cleaning

To protect the paintwork, avoid leaning anything against the de-
vice or putting objects on the device. External heat pump parts
can be wiped with a damp cloth and domestic cleaner.
NOTE
Never use cleaning agents containing sand, soda, acid or chloride as
these can damage the surfaces.
To prevent faults due to sediment in the heat exchanger of the
heat pump, ensure that the heat exchanger in the heating system
cannot be contaminated. We recommend protecting the evapo-
rator by installing a bird guard in the inlet duct. At least 80 % of
the cross section of the grating should be open. In the event that
operating malfunctions due to contamination still occur, the sys-
tem should be cleaned as described below.
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