Electrical Installations For The Heat Pump - Dimplex WPM 2006 plus Instructions De Montage Et De Service

4

4 Electrical Installations for the Heat Pump

1) The three-core or four-core supply cable for the output
section of the heat pump is fed from the heat pump meter via
the utility blocking contactor (if required) into the heat pump
(1L/N/PE~230 V, 50 Hz or 3L/PE~400 V, 50 Hz).
The system must be protected according to the power
consumption data on the type plate using an all-pole circuit
breaker of the phases with C characteristic and common
tripping for all 3 paths. Cable cross section in compliance
with DIN VDE 0100.
2) The three-core supply cable for the heat pump manager
(N1 heating controller) is fed into the heat pump (device with
integrated controller) or to the future mounting location of the
heat pump manager (HPM).
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump
manager must have a constant voltage. For this reason, it
should be tapped upstream from the utility blocking
contactor or be connected to the household current,
because otherwise important protection functions could be
lost during a utility block.
3) The utility blocking contactor (K22) with 3 main contacts
(1/3/5 // 2/4/6) and an auxiliary contact (NO contact 13/14)
should be dimensioned according to the heat pump output
and must be supplied by the customer.
The NO contact of the utility blocking contactor (13/14) is
looped from terminal strip X2 to the connector terminal J5/
ID3. CAUTION! Extra-low voltage!
4) The contactor (K20) for the immersion heater (E10) of
mono energy systems (HG2) should be dimensioned
according to the radiator output and must be supplied by
the customer. It is controlled (230 V AC) by the heat pump
manager via the terminals X1/N and J13/NO 4.
5) The contactor (K21) for the flange heater (E9) in the hot
water cylinder should be dimensioned according to the
radiator output and must be supplied by the customer. It
is controlled (230 V AC) by the heat pump manager via the
terminals X1/N and J16/NO 10.
6) The contactors mentioned above in points 3, 4 and 5 are
installed in the distribution cabinet. The mains cables for the
radiators should be dimensioned and protected according to
DIN VDE 0100.
7) The heat circulating pump (M13) is connected to the
terminals X1/N and J13/NO 5.
8) The hot water circulating pump (M18) is connected to the
terminals X1/N and J13/NO 6.
9) The brine or well pump is connected to the X1/N and J12/
NO 3 terminals.
When using air-to-water heat pumps, never connect a heat
circulating pump to this output.
10) The return flow sensor (R2) is either directly integrated in
brine-to-water and water-to-water heat pumps or is included
in the scope of supply as a separate component.
The return flow sensor is integrated in air-to-water heat
pumps for indoor installation and is connected to the heat
pump manager via the control line. Both single-core wires
are connected to the terminals X3 (ground) and J2/B2.
When implementing air-to-water heat pumps for outdoor
installation, the return flow sensor must be connected to the
common return flow of the heating system and the hot water
system (e.g. immersion sleeve in compact manifold).
The heat pump manager is also connected via the following
terminals: X3 (ground) and J2/B2.
EN-6
11) The external sensor (R1) is connected to the terminals X3
(ground) and J2/B1.
12) The hot water sensor (R3) is installed in the hot water
cylinder and is connected to the terminals X3 (ground) and
J2/B3.
13) The heat pump and the heat pump manager are connected
to each other (round plug) via coded control lines which
must be ordered separately in the case of heat pumps
installed outdoors. Always connect the single-core wire
(No.8) to the terminal J4-Y1.
NOTE
If three-phase pumps are implemented, a power contactor can be
controlled via the 230 V output signal of the heat pump manager.
Sensor cables can be extended to up to 40 m with 2 x 0.75 mm cables.
Fig. 4.1: Wall-mounted heat pump manager (heating)
F2 Load fuses J12-J13 4 A slow-acting
F3 Load fuses J14-J18 4 A slow-acting
K9 230 V/ 24 V coupling relay
N1 Heating controller
T1 Transformer
X1 230 V AC terminal strip
X2 24 V AC terminal strip
X3 GND(0V) V DC terminal strip
X8 Extra-low voltage plug connector
X11 Control plug connector
Legends for Fig. 4.2 on p. 7
A1 EVS bridge (J5/ID3-EVS to X2) must be inserted
if no utility blocking contactor is fitted
(contact open = utility block).
A2 SPR bridge (J5/ID4-SPR to X2) must be removed,
if the input is used (input open =
HP blocked)
A3 Bridge (M11 fault). A floating
NC contact can be used in place of A3 (e.g. protective
motor switch)
A4 Bridge (M1 fault). A floating NC contact
can be used in place of A4 (e.g. protective motor switch)
B2* Low pressure brine controller
B3* Hot water thermostat
B4* Swimming pool water thermostat