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Siemens RDF800KN.., RDF800KN/VB, RDD810KN/NF Basic documentation CE1P3174en
Smart Infrastructure 2020-02-21
4. Handling
4.1 Mounting and installation
Mount the room thermostat on the conduit box. Do not mount on a wall in niches or
between bookshelves, behind curtains, above or near heat sources, or exposed to
direct solar radiation. Mount it approximately 1.5 m above the floor.
Mounting /
dismounting
· Do not apply excessive force on screws! The deformation of the mounting
frame may lead to improper connections and operation of the unit.
· Mount the room thermostat in a clean, dry indoor place without direct airflow
from heating/cooling equipment, and not exposed to drips of water.
· For RDF800KN only, in case of limited space in the conduit box, use mounting
spacer ARG70.3 to increase the headroom by 10 mm.
· Before removing the front cover, disconnect the power supply.
Wiring See Mounting Instructions M3174.1xx and M3174.2xx [1] enclosed with the
thermostat.
· Comply with local regulations to wire, protect and earth the thermostat.
· The unit 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.
· Use only valve actuators rated for AC 230 V.
· Properly size the cables to the thermostat, fan and valve actuators for
AC 230 V mains voltage.
· RDF800KN..: The wiring cross section used for power supply (L, N), fan/relays
(Qx) and AC 230 V outputs (Yx -N) must be adapted to the preceding overload
protection elements (max 10 A) under all circumstances. Comply under all
circumstances with local regulations.
· RDD810KN/NF: The wiring cross section used for power supply (L, N), and the
AC 230 V outputs (Qxx - N) must be adapted to the preceding overload
protection elements (max 10 A) under all circumstances. Comply under all
circumstances with local regulations.
· Cables of SELV inputs X1-M/X2-M: Use cables with min. AC 230 V insulation,
as the conduit box carries AC 230 V mains voltage.
· Input X1-M or X2-M: Several switches (e.g. window contact) may be
connected in parallel. 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.
· When KNX bus power supply is connected on the line with communicating
thermostats and Synco controllers, the internal KNX power supply of the
Synco controllers must be switched off.
· Disconnect from power supply before opening the thermostat’s cover.
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