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8.10 Connection of the external source
pump (GEMINI)
A regulation message is connected to the external source
pump using the heat pump controller TC2.
8.11 External control to the source pump
The source pump can be started up using external
potential-free contact terminal information. The contact
terminal information is connected to the controller
connections T3, +24V and T5, DU1. This function can be
used for passive cooling.
Closing the contact terminal starts up the source pump
inside the heat pump.
8.12 Connecting accessories
The connection instructions for accessories are included
in the installation instructions supplied with each product.
v1-1 12082021
8.13 Connecting an expansion card
Accessories that require an expansion module should be
connected to the controller using a connector or cable
attached to the end of the module. First attach the
connector to the expansion module before attaching the
expansion module to the DIN rail. When the module is
attached to the DIN rail, push the connector into the
controller. The protective plastic in front of the connector
must be removed from the controller before installation.
Connection at the end of the controller
8.14 Connecting an external circulator
pump
An external circulator pump can be installed into the first
heating circuit. The external circulator pump can be
connected to the heat pump control system.* The
circulator pump always functions according to factory
presents when the functional state of domestic water is
ON. The control system of the circulator pump can be
changed to function according to a programmed schedule.
This change can be made using the heat pump's user
interface.
*Electricity to the external circulator pumps of the heat
pump is input vie the hub, behind the contactor output.
8.15 Heating control group (accessory)
The heating control group is an accessory available for the
T3 Inverter and the Gemini Inverter heat pumps, enabling
a second heating circuit to be controlled. The heating
control group is delivered separately, in a separate product
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