9
Installation
C.2 Electrical connection
Danger
Before working on the unit, switch off the power supply and secure it against
being switched on again! Check for the absence of power!
Electrical connections may only be made by a specialist and in compliance
with the applicable regulations. Do not use the controller if the housing
shows visible damage.
Caution
Low-voltage cables such as temperature sensor cables must be routed
separately from mains voltage cables. Feed temperature sensor cables only
into the left-hand side of the unit, and mains voltage cables only into the
right-hand side.
Caution
The customer must provide an all-pole disconnecting device, e.g. a heating
emergency switch.
Caution
The cables being connected to the unit must not be stripped by more than
55 mm, and the cable jacket must reach into the housing just to the other
side of the strain relief.
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