32 | EN SMARTY v2023.2
EKA NIS connection:
Automatic and manual protection devices must be connected to EX1 controller ‘s X23 connector when an electric heater is equipped with these
connection terminals. Otherwise, jumpers are installed on the X23 connector protection inputs.
Automatic and manual protection devices must be connected to the controller’s X5 connector when an electric pre-heater is equipped with these
connection terminals. Otherwise, jumpers are installed on the X5 connector protection inputs.