4. Electrical connection
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104781 - MRF-2 | MRH-2 - V2.4 - 22.07.2020
4.3 Wiring
Correct wiring in accordance with the information in the accompanying description
and local regulations is essential. Take particular care to ensure that the AC supply
is not connected to the sensor input or other low-voltage inputs or outputs.
The various relay contacts may only be connected with uniform tension.
Use copper wire (except for the sensor connection) and ensure that all supply leads
and connection terminals are dimensioned to suit the relevant current rating.
When connecting the controller and selecting the wiring materialsto be used, it is
essential to comply with the provisions of DIN VDE 0100 “Erection of power instal-
lations with rated voltages below 1000” or the relevant national regulations.
Furthermore, all connections must comply with the relevant VDE regulations or cor-
responding national regulations.
4.4 Circuit diagram
The correct circuit diagram for your controller is affixed to the housing and is also
included in the Accompanying Device Documentation.
All components (heating and cooling units, fans, alarms etc.) must be connec-
ted in accordance with the circuit diagram in the Accompanying Device Docu-
mentation of the controller.
NB:
The electrical connection must comply with the technical data in the Accom-
panying Device Documentation of the controller.
Use cable bushes.
Make sure that cables cannot chafe.
