47 / 58
Siemens RDF302 Basic documentation CE1P3079en
Building Technologies 07 Dec 2011
4. Handling
4.1 Mounting and installation
Mount the room thermostat on a recessed rectangular conduit box with 60.3 mm
fixing centers. Do not mount on a wall in niches or bookshelves, behind curtains,
above or near heat sources, or exposed to direct solar radiation. Mount about
1.5 m above the floor.
Mounting
Mount the room thermostat in a clean, dry indoor place without direct airflow
from a heating / cooling device, and not exposed to dripping or splash water
In case of limited space in the conduit box, use mounting bracket ARG70.3 to
increase the headroom by 10 mm
Wiring See Mounting Instructions M3079 enclosed with the thermostat.
Comply with local regulations to wire, fuse and earth the thermostat
Properly size the cables to the thermostat, fan and valve actuators for AC 230
V mains voltage
Use only valve actuators rated for AC 230 V
The AC 230 V mains supply line must have an external fuse or circuit breaker
with a rated current of no more than 10 A
Isolate the cables of SELV inputs X1-M/X2-M for 230 V if the conduit box
carries AC 230 V mains voltage
Inputs X1-M or X2-M: Several switches (e.g. summer / winter switch) may be
connected in parallel. Consider overall maximum contact sensing current for
switch rating
Isolate the cables of Modbus communication input +, - and REF for 230 V.
No metal conduits
No cables provided with a metal sheath
Disconnect from supply before opening the cover
To Next Page
Loading...
