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6.3 Electrical connection
3 lines/cables must be routed to the heat pump in total:
A standard 5-core cable is used to connect the heat pump
to the power supply.
The cable must be provided on-site. The conductor cross
section is selected in accordance with the power con-
sumption of the heat pump (see attachment Device Infor-
mation) and the applicable VDE (EN) and VNB regulations.
An all-pole disconnecting device with a contact gap of at
least 3 mm (e.g. utility blocking contactor or power contac-
tor) must be installed in the heat pump power supply. A 3-
pole circuit breaker with joint tripping of all outer conduc-
tors (trip current in accordance with device information)
provides the short circuit protection taking into account
the layout of the internal wiring.
The relevant components in the heat pump contain an in-
ternal overload protection.
When connecting, ensure that the incoming supply has a
clockwise rotating field.
Phase sequence: L1, L2, L3.
CAUTION!
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).
The control voltage is supplied via the heat pump manager.
A 3-pole line must be laid for this in accordance with the
electrical documentation. Further information on the wir-
ing of the heat pump manager is available in the heat pump
manager operating instructions.
A shielded communication line (J-Y(ST)Y ..LG) (not in-
cluded in the scope of supply) connects the heat pump
manager with the refrigeration circuit control installed in
the heat pump. More detailed instructions can be found in
the heat pump manager operating instructions and in the
electrical documentation.
NOTE
The communication cable is necessary for the function of
airto- water heat pumps in outdoor installation. It must be
shielded and laid separately from the mains cable.
6.3.1 Demand sensor connection
The demand sensor R2.2 (NTC 10) is included with the heat
pump manager. It must be installed depending on the hydrau-
lics used.
If a demand sensor is not connected, the second heat genera-
tor can not be controlled with the heat pump manager in the
event of an interruption in communication either.
NOTE
The return sensor R2 installed in the heat pump is active when
the compressor is running and must not be disconnected.
EN-8
7
7.1 General
To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by
the manufacturer. These measures can also include an addi-
tional warranty under certain conditions (see Warranty).
7.2 Preparation
The following items need to be checked prior to start-up:
All of the heat pump connections must be installed 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 fan must turn in the direction indicated by the arrow.
The settings of the heat pump manager must be adapted
to the heating system in accordance with the manager's
operating instructions.
Ensure the condensate outflow functions properly.
The hydraulic network must be flushed correctly before in-
stalling the heat pump. This includes the supply line to the
heat pump. Only when flushing is complete can the heat
pump be hydraulically integrated.
The dirt traps present as standard or included for assembly
must be inspected between 4 and 8 weeks after the heat
pump is commissioned or changes made to the heating
system and cleaned if necessary. Further maintenance in-
tervals must be scheduled depending on the level of soil-
ing, which must be defined and carried out by a suitably
qualified person.
Special notes for the integration of heat pumps in
existing systems (renovations):
The existing heat distribution network (pipe materials, connec-
tion types, etc.) and the existing heating systems (e.g. radiators,
underfloor heating, etc.) can impact the quality of the water in
existing systems. Particularly when welded steel pipes or pipes
that are not oxygen diffusion-proof are used, deposits, scaling,
silting or similar may be present that can cause damage in the
heat pump system. This can result in a total failure of the heat
pump The following measures must be observed to avoid this:
Compliance with the water properties and water quality
Flushing of the hydraulic system
Maintenance interval of the dirt traps
If silting or ferromagnetic particles are to be expected in
the hydraulic network, dirt separators or magnetite separa-
tors must be installed on-site before the medium enters
the heat pump. The maintenance intervals must be defined
by a suitably qualified person.
452167.66.48-EN · FD 0212
Start-up
LA 3860
www.dimplex.de
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