Dimplex LIH 22TE, Installation And Operating Instructions Manual

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www.dimplex.de EN-9
English
9.1
5) The contactor (K21) for the flange heater (E9) in the hot
water cylinder should be dimensioned according to the radi-
ator output and must be supplied by the customer. It is con-
trolled (230 V AC) by the heat pump manager via terminals
X2/N and N1-J16/NO10.
6) The contactors mentioned above in points 3, 4 and 5 are in-
stalled in the electrical distribution system. The mains cables
for the heating elements should be dimensioned and pro-
tected according to DIN VDE 0100.
7) All cables must be installed as permanent wiring.
8) The heat circulating pump (M13) is connected to terminals
X2/N and
N1-J13/NO 5 .
9) The DHW loading pump (M18) is connected to terminals X2/
N and
N1-J13/NO 6 .
10) 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.
11) The external sensor (R1) is connected to terminals X3/GND
and N1-J2/B1 .
12) The hot water sensor (R3) is installed in the hot water cylin-
der and is connected to terminals X3/GND and N1-J2/B3 .
8 Start-UP
8.1 General Information
To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).
8.2 Preparation
The following items need to be checked prior to start-up:
„ All of the heat pump connections must be established as de-
scribed in Chapter 6.
„ All valves that could impair the proper flow of the heating
water in the heating circuit must be open.
„ The air intake and air outlet paths must be clear.
„ The ventilator must turn in the direction indicated by the ar-
row.
„ The settings of the heat pump manager must be adapted to
the heating system in accordance with the controller’s oper-
ating instructions.
„ Ensure the condensate outflow functions properly.
8.3 Procedure
The heat pump is started up via the heat pump manager. Adjust-
ments should be made in compliance with the instructions. 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.
9 Maintenance / Cleaning
9.1 Maintenance
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.
ATTENTION!
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
can not 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 op-
erating malfunctions due to contamination still occur, the system
should be cleaned as described below.