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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation CE1P3181en
Building Technologies Handling 19 Jun 2009
5 Handling
5.1 Mounting and installation
Do not mount on a wall in niches or book-
shelves, behind curtains, above or near
heat sources, or exposed to direct solar
radiation. Mount about 1.5 m above the
floor.
The room thermostat must be mounted in a clean, dry indoor place and must not be
exposed to drip or splash water
See Mounting Instructions (M3181) enclosed with the thermostat.
Comply with local regulations to wire, fuse and earth the thermostat
Size correctly the cables to the thermostat, fan and valve actuators for AC 230 V
mains voltage
Use only valve actuators rated for AC 230 V on RDG100… / RDG110
The power supply line must have an external fuse or circuit breaker with a rated
current of no more than 10 A
Isolate the cables of inputs X1-M / X2-M and D1-GND if the conduit box carries
AC 230 V mains voltage
On the RDG100.. and RDG110, inputs X1-M and X2-M carry mains potential.
If the sensor’s cables are extended, they must be suited for mains voltage
Inputs X1-M, X2-M or D1-GND of different units (e.g. summer / winter switch)
may be connected in parallel with an external switch. Consider overall maximum
contact sensing current for switch rating
Disconnect power supply before removing the thermostat from the mounting
plate!
Select the application and the type of control output via the DIP switches before
fitting the thermostat to the mounting plate.
After power is applied, the thermostat carries out a reset during which all LCD
segments blink, indicating that the reset was correct. After the reset, which takes
about 3 seconds, the thermostat is ready for commissioning by qualified HVAC
staff.
The control parameters of the thermostat can be set to ensure optimum
performance of the entire system (see section 4.15, control parameters).
The control sequence may need to be set via parameter P01 depending on the
application. The factory setting for the 2-pipe application is “Cooling only”; and
“Heating and cooling” for the 4-pipe application
When the thermostat is used in connection with a compressor, the minimum
output on-time (parameter P48) and off-time (parameter P49) for Y11/Y21 must
be adjusted to avoid damage to the compressor and shortening its life
Recalibrate the temperature sensor if the room temperature displayed on the
thermostat does not match the room temperature measured. To do this, change
parameter P05
We recommend to review the setpoints and setpoint setting ranges (parameters
P08…P12) and change them as needed to achieve maximum comfort and save
energy
Mounting
Wiring
Commissioning
Control sequence
Compressor-based
application
Calibrate sensor
Setpoint and setpoint
setting range limitation
49


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