Dimplex M Flex Air, Installation And Operating Instruction

Page: 18 / 40

16 DOK4x HOIAO FxDEN · FD 0001 www.glendimplex.de
English Air-to-water heat pump M Flex
6.6.4 Electrical connection general
All connection cables must be provided on-site. The cable type
(cross-section, conductor type, etc.) must be chosen taking
into account the relevant electrical parameters (e.g. power, cur-
rent, voltage, etc.) and the applicable VDE, EN and VNB regula-
tions. Information on this can be found in the device informa-
tion and the electrical documentation as a planning aid.
HINWEIS
ºº º ºº º
NOTE
Plugs on switch box are protected against tensile strain. They
must be released with a small screwdriver before disconnect-
ing.
6.6.5 Electrical connection indoor unit
For operating the heat pump, at least the following cables / sig-
nals must be connected:

Supply voltage/refrigeration circuit
An all-pole disconnecting device with a contact gap of at
least 3 mm (e.g. utility company’s blocking contactor or
power contactor) must be installed in the refrigeration cir-
cuit power supply. A 1 or 3-pole circuit breaker (trip current
in accordance with device information) for the 1 or 3-phase
refrigeration circuit module provides the short circuit pro-
tection, taking into account the layout of the internal wir-
ing. The relevant components in the heat pump contain an
internal overload protection.
The connection to the refrigeration circuit switch box is
made at +A100-X1 (L, N, PE or L1, L2, L3, N, PE – phase se-
quence must be observed).
HINWEIS
ºº º ºº º
NOTE
For a 3-phase connection:
Ensure that there is a clockwise rotating field: With incorrect
wiring the starting of the heat pump is prevented. A relevant
warning is shown.

Communication/control voltage (hydraulics <-> refrigera-
tion circuit)
The communication and control voltage cable from the hy-
draulic switch box (with heat pump manager) to the refrig-
eration circuit module are already pre-wired and end on the
plugs +A100-X2 (control voltage) and +A100-X5.1 (com-
munication). These may only have to be inserted.

Control voltage
The three-core supply cable for the heat pump manager
(A200-N1) is fed into the heat pump to the hydraulic switch
box +A200. Here, it must be connected on plug "X1.1:
230V - IN" (white) on the adapter board. The supply cable
(L/N/PE; 230 V, 50 Hz) must have a continuous voltage.
For this reason, it should be tapped upstream from the util-
ity company’s blocking contactor or be connected to the
household current, otherwise important protection func-
tions could be lost during a utility block.

Utility block
The utility company’s blocking contactor (-K22) with main
contact and auxiliary contact (NO contact 13/14) should
be designed according to the heat pump output, and must
be supplied on-site. The floating NO contact of the utility
company blocking contactor (13/14) is wired to the hy-
draulic switch box +A200. The connection takes place on
the plug (grey [1]) "DI1" on the adapter board.
Caution!
Extra-low voltage!

External sensor
The external sensor (-R1) is connected to the adapter
board via the plug (grey [3]) "U1" in the hydraulic module
switch box (+A200)

Supply voltage, hydraulics
For the power supply to the 2nd heat generator, a wire
must be routed to the device according to the power and
connected to the hydraulic switch box on terminal strip
+A400-X1.
In its delivery state, the 2nd heat generator is configured to
6 kW to guarantee that the increased heat consumption re-
quirement is met while drying out the building. In regular
operation, this must be adapted to the actual additional
heating output required (integrated system label).
To reduce this to 4 or 2 kW, either one or two connections
bA400-K20 (2nd heat generator relay) and
+A400-F17 (safety temperature limited) – both of which
are contained in the hydraulic switch box – must be re-
moved.
HINWEIS
ºº º ºº º
NOTE
The assignment of the heat pump manager is outlined in the
Quick Installation Guide. Unused functions must be deacti-
vated during commissioning. Special assignments must be
marked on the label field of the heat pump manager using the
label provided.
6.6.6 Electrical connection outdoor unit
A power supply (plug +A110-X1 <-> +A100-XA110) and com-
munication line (plug +A110-X5 <-> +A100-X5.2) must be
routed parallel to the refrigerant line between the refrigeration
circuit and the outdoor unit.
6.6.7 Domestic hot water cylinder connection
The domestic hot water sensor is connected as described in
Cap. 5.2 on page 10, and now only needs to be installed in the
correct sensor position.