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Electrical installation work for the heat pump
4.1 Electrical installation work
1)
A shielded communication line (e.g. Y(ST)Y ..LG) must be
established between the master control and the heat
pump managers. Details can be found in the accompany-
ing electrical documentation.
2)
The three-core electrical supply cable for the master con-
trol (N1) is routed into the future mounting location of the
master control.
The supply cable (L/N/PE~230 V, 50 Hz) for the master
control must have a constant 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.
3)
The NO contact of the utility blocking contactor (13/14) is
connected to pin (1) (DI1) of function block 0 (grey). CAU-
TION! Extra low voltage!
4)
The contactor (K20) for the immersion heater (E10) of
mono energy systems (2nd heat generator) should be di-
mensioned according to the radiator output and must be
provided on-site. The control (230 V AC) is performed from
the master control, with the function applied via pin (7)
(NO3) of function block 0 (grey).
5)
The contactor (K21) for the flange heater (E9) in the do-
mestic hot water cylinder should be dimensioned accord-
ing to the radiator output and must be provided on-site.
The control (230 V AC) is performed from the master con-
trol via pin (7) of the defined function block.
6)
The contactors mentioned above in points 3, 4 and 5 are
installed in the electrical distribution system. The mains ca-
bles for the radiators should be dimensioned and pro-
tected according to DIN VDE 0100.
7)
The heat circulating pump (M13) is connected to pin (5)
(230 V AC) and (8) (control signal) of function block 0
(grey).
8)
The external sensor (R1) is connected to pin (3) (U1) of
function block 0 (grey).
HINWEIS
NOTE
If three-phase pumps are implemented, a power contactor
can be controlled via the 230 V output signal of the master
control.
Sensor cables can be extended up to 50 m with 2 x 0.75 mm
cables.
HINWEIS
NOTE
Further information on the wiring of the heat pump manager
is available in the electrical documentation.
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452117.66.32-EN · FD 0505
WPM Touch Master
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