18
DOK4x HCIAO CxDEN · FD 9912
www.gdts.one
English
Air-to-water heat pump 16 kW with cooling and domestic hot water
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.
!!
ATTENTION!
The plugs are protected against being pulled. They must be
released with a small screwdriver before disconnecting.
6.6.5 Electrical connection indoor unit
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.
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 blocking contactor, power contac-
tor) must be installed in the refrigeration circuit power sup-
ply. 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 protection, taking
into account the layout of the internal wiring. 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).
!!
ATTENTION!
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-X2. 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 utility blocking con-
tactor or be connected to the household current, because
otherwise important protection functions could be lost
during a utility block.
Utility block
The utility 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 blocking con-
tactor (13/14) is wired to the hydraulic switch box and
must be connected on the relevant plug +A200-XK22
there.
Caution! Extra-low voltage
External sensor
The external sensor is connected to the hydraulic module
via the +A200-XR1 plug
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 plug +A400-X1.
In delivery state, the 2nd heat generator is configured to
6kW to guarantee that the increased heat consumption is
met while drying out the building. In regular operation, this
must be adapted to the actual required additional heating
output (integrated system label).
To reduce it to 4 or 2 kW, one or two connections between
+A400-K20 (relay 2nd heat generator) and +A400-F17
(safety temperature limiter)- both located in the hydraulic
switch box - must be removed.
6.6.6 Electrical connection outdoor unit
A power supply (plug +A110-X1 <-> +A100-X5.2) and commu-
nication line (plug +A110-X5 <-> +A100-X5.2) must be routed
parallel to the split line between the refrigeration circuit and the
outdoor unit.
HINWEIS
ºº
º
ºº
º
NOTE
The assignment of the heat pump manager is outlined in the
Quick Installation Guide. The functions are also printed on the
label field of the heat pump manager
6.6.7 LAN / network connection
The heat pump is only designed for connection to the internet
via a router. This ensures that the user can access the system at
any time for setting parameters or for reading out information.
Maintenance work or software updates are much easier.
A conventional network cable (Cat. 5) is required for connec-
tion, which is connected between an external router (+A350)
and the network interface (+A210) of the indoor unit.
6.6.8 Domestic hot water cylinder connection
The domestic hot water sensor is connected as described in
Cap. 5.2 on page 12, and now only needs to be installed in the
correct sensor position. On domestic hot water cylinders
(MDHW 335) with an additional electric heater for domestic hot
water (flange heater), the supply voltage must be connected
and plugged into the supplied plug +A420-X1. The control ca-
ble, which hangs out of the back of the cylinder, must be
plugged into the hydraulic switch box (+A200) according to the
colour coding and labelling.
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