29
Installation instructions geoTHERM VWS/VWW 0020051574_01
meter and can be interrupted by the power company at
peak times.
The electrical installation at the connection terminals is
as follows:
• Remove the jumpers (dashed lines,
4
).
• Connect the permanent power supply to the high tar-
iff mains feed (
5
).
• Connect the low tariff power supply to the low tariff
mains feed (
3
).
• Connect the external heating circuit pump (to be pro-
vided on the customer side) (
6
).
h
Note
The following applies for an external/
customer side heating circuit pump:
I
max
= 2 A; U
max
= 230 V.
If these values are exceeded, the heating
circuit pump must be wired up via a
relay/contactor on the customer side.
If you wish to connect an auxiliary heating system (to be
provided on the customer side):
a
Caution!
Risk of damage!
The maximum power of the auxiliary
heating must not exceed 3 x 3 kW
(3 x 13 A) due to the danger of overload-
ing. The electrical auxiliary heating must
be protected on the customer side by a
non self-resetting thermal cut-out that
provides all-pole disconnection.
• Connect the power supply to the auxiliary heating (
1
).
Connect the auxiliary heating yourself (
2
).
Install a safety thermostat (STB) (to be provided on
the customer side) for the auxiliary heating.
• Connect the ripple control signal relay to terminal 12,
"EVU" (see Fig. 6.6), if required by the power compa-
ny. The heat pump is blocked with this signal when the
contact is closed.
For VWW only:
• Connect the immersion pump (
7
).
• Adjust the thermal overcurrent relay for the immer-
sion pump (see Fig. 6.1, Pos.
5
) to match the current
of your immersion pump. Adjust the switch-off current
so that it is 10 % higher than the rated current of your
immersion pump.
If you wish to connect a cooling system (to be provided
on the customer side):
• Connect the 3-port diverter valve for the heating/
cooling system (
8
).
During the subsequent start-up, select (amongst others)
the electrical plan to be used to operate the heat pump
(see Chap. 7.3). Depending on the above choice, the cor-
responding tariff will be activated in the software.
Specify electrical plan 2 if the heat pump tariff is used.
In this case the auxiliary heating (to be provided on the
customer side and installed externally) is supplied via
the normal tariff.
Specify electrical plan 3 if the special tariff is used. In
this case the auxiliary heating (to be provided on the
customer side and installed externally) is also supplied
via the low tariff.
You will find an overview of the complete wiring dia-
gram in the appendix.
Electrical installation 6
