Mounting And Installation - Siemens RDF870KN Series Manual

Engineering
See the product documentation for information on engineering, selection and sizing connect-
ing cables for supply voltage and field devices.

Mounting and installation

Mount the room controller on a conduit box. Do not mount on a wall in niches or between
bookshelves, behind curtains, above or near heat sources, wind outlets or inlets, and do not
expose to direct solar radiation. Mount about 1.5 m above the floor.
● Do not apply excessive force to screws! Deformation of the mounting frame may result in
Mounting
improper connections and faulty operation.
● Mount the room controller in a clean, dry indoor place without direct airflow from a heat-
ing/cooling device, not exposed to drips or splash water.
● Before removing the front cover, disconnect the power supply.
No internal line protection for supply lines to external consumers
Risk of fire and injury due to short-circuits
● Adapt the line diameters as per local regulations to the rated value of the installed fuse.
See Operating Instruction for the installation instructions enclosed with room controller.
Wiring
● Comply with local regulations to wire, protect and earth the room controller.
● The device has no internal fuse for supply lines to fan and actuators. To avoid risk of fire
and injury due to short-circuits, the AC 230 V mains supply line must have a circuit
breaker with a rated current of no more than 10 A.
● The wiring cross section used for power supply (L, N) and 230 V outputs (Qxx - N) must
be adapted to the preceding overload protection elements (max. 10 A) under all circum-
stances. Always comply with local regulations.
● Properly size the cables to the room controller and valve actuators for AC 230 V mains
voltage.
● Cables of SELV inputs X1-M / X2-M: Use cables with min. 230 V insulation, as the con-
duit box carries AC 230 V mains voltage.
● Inputs X1-M or X2-M of different units (e.g. temperature sensor) may be connected in
parallel with an external switch. Consider overall maximum contact sensing current for
switch rating.
● KNX communication cables (input CE+ / CE-): Use cables with Min. 230 V insulation, as
the conduit box carries AC 230 V mains voltage. (Only for RDF870KN)
● When a KNX bus power supply is connected on the line with communicating room con-
troller and Synco controllers, the internal KNX power supply of the Synco controllers
must be switched off. (Only for RDF870KN)
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2021-03-31