Technical data
92 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
7.9.2 Heat pump manager
7.9.2 Electrical connection WPM Master
1) 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 (WPM). The (L/N/PE~230 V, 50 Hz)
supply cable for the heat pump manager must have a con-
stant voltage. For this reason, it should be tapped upstream
from the utility blocking contactor or be connected to the
household current, as important protection functions may
otherwise be lost during a utility block.
2) The contactor (K20) for the immersion heater (E10) of
mono energy systems (HG2) should be dimensioned ac-
cording to the radiator output and must be supplied by the
customer. It is controlled (230V AC) by the heat pump man-
ager via terminals X1/N and N1-J13/NO 4.
3) The contactor (K21) for the flange heater (E9) in the do-
mestic hot water cylinder should be dimensioned according
to the radiator output and must be supplied by the cus-
tomer. It is controlled (230V AC) by the heat pump manager
via terminals X2/N and N1-X2/K21.
4) The contactors mentioned in points 3, 4 and 5 are installed
in the electrical distribution system. The mains cables for the
heating elements should be dimensioned and protected ac-
cording to DIN VDE 0100.
5) The heat circulating pump (M13) is connected to terminals
X2/N and N1-X2/M13.
6) The domestic hot water circulating pump (M18) is con-
nected to terminals X2/N and N1-X2/M18.
7) The return sensor is integrated into air-to-water heat pumps
for outdoor installation, and is connected to the heat pump
manager via the control cable. The return sensor must be in-
stalled in the immersion sleeve in the manifold only when a
dual differential pressureless manifold is used. The single-
core wires are then connected to terminals X3/GND and X3/
R2.1. The A-R2 link cable (which is situated between X3/B2
and X3/1 when delivered) must then be connected to the X3/
1 and X3/2 terminals.
8) The external sensor (R1) is connected to terminals X3/
GND (ground) and N1-X3/R1.
9) The domestic hot water sensor (R3) is installed in the do-
mestic hot water cylinder and is connected to terminals X3/
GND (ground) and N1-X3/R3.
NOTE
When using three-phase current pumps, a power contactor can be acti-
vated with the 230V output signal of the heat pump manager.
Sensor cables can be extended with 2 x 0.75 mm cables up to 40 m.