Electrical installation
Installation instructions geoTHERM 0020051574_04
59
7
7.20
Connecting the VRC DCF receiver
>
Fit the VRC DCF receiver in accordance with its enclosed
installation manual.
>
Wire the VRC DCF receiver accordingly (
¬
Fig. 7.20
):
– Left: enclosed VRC DCF receiver with integrated out-
door sensor
– Right: special solution with outdoor sensor (optional
accessory)
A special solution with outdoor sensor VRC 693 is required
if, for example, radio reception is only transmitted at an
installation location that is exposed to sun (
¬ operating
and installation instructions VRC 693)
.
7.6
Installing accessories that are absolutely
necessary
Hydraulic Schemes 1 and 3
For Hydraulic Schemes 1 and 3, the following additional
accessories must be connected as required components
that are not included in the scope of delivery:
– A limit thermostat
– An external heating circuit pump
– Hydraulic Scheme 3 only: An external heating/cylinder
charging diverter valve
– VWW only: A well pump
>
Fit a limit thermostat (
19
) (
¬
Fig.
5.2
and
¬
Fig. 5.4
).
>
Depending on the mains supply, connect the limit ther-
mostat as described in(
¬
Ch.
7.3.6
or
¬
Ch.
7.3.7
)
.
>
Fit an external heating circuit pump in the supply.
>
Connect the external heating circuit pump as described
in (
¬
Ch.
7.3.3
)
.
Additional information for Hydraulic Scheme 3:
>
Fit an external heating/cylinder charging diverter valve.
>
Connect an external heating/cylinder charging diverter
valve to terminal LP/UV1 (
2
) (
¬
Fig.
7.18
).
VWW only:
>
Fit an external well pump.
>
Connect the well pump as described in (
¬
Ch.
7.3.4
).
Hydraulic Schemes 2 and 4
For Hydraulic Schemes 2 and 4, the following additional
accessories must be connected as required components
that are not included in the scope of delivery:
– A limit thermostat
– An external heating circuit pump
– A second external heating circuit pump
– An external, motor-controlled 3-way mixing valve
– Hydraulic Scheme 4 only: An external heating/cylinder
charging diverter valve
>
Fit a limit thermostat (
19
) (
¬
Fig. 5.3
and
¬
Fig. 5.5
).
>
Depending on the mains supply, connect the limit ther-
mostat as described in (
¬
Ch.
7.3.6
or
7.3.7
).
>
Fit an external heating circuit pump in the buffer circuit.
>
Connect the external heating circuit pump as described
in (
¬
Ch.
7.3.3
).
>
Fit a second external heating circuit pump in the heating
circuit.
>
Connect a second external heating circuit pump to termi-
nal HK2-P (
5
) (
¬
Fig.
7.18
).
>
Fit an external, motor-controlled 3-way brine mixing
valve
>
Connect the external motor-controlled 3-way brine mix-
ing valve to terminal HK2 (
6
) (
¬
Fig.
7.18
).
Additional information for Hydraulic Scheme 4:
>
Fit an external heating/cylinder charging diverter valve.
>
Connect an external heating/cylinder charging diverter
valve to terminal LP/UV1 (
2
) (
¬
Fig.
7.18
).
VWW only:
>
Fit an external well pump.
>
Connect the well pump as described in (
¬
Ch.
7.3.4
).
Hydraulic Scheme 10:
For Hydraulic Scheme 10, the following additional accesso-
ries must be connected as required components that are
not included in the scope of delivery:
– A limit thermostat
– An external heating circuit pump
– A second external heating circuit pump
– An external, motor-controlled 3-way mixing valve
– An external heating/cylinder charging diverter valve
– Two external heating/cooling diverter valves
– A second external brine circuit pump cooling
– An external 3-way brine mixing valve cooling
>
Fit a limit thermostat (
19
)(
¬
Fig.
5.6
).
>
Depending on the mains supply, connect the limit ther-
mostat as described in (
¬
Ch.
7.3.6
or
7.3.7
).
>
Fit an external heating circuit pump in the buffer
circuit.
>
Connect the external heating circuit pump as described
in(
¬
Ch.
7.3.3
).
>
Fit a second external heating circuit pump in the
heating circuit.
>
Connect a second external heating circuit pump to termi-
nal HK2-P (
5
) (
¬
Fig.
7.18
).