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Commissioning notes
Labeling
Function test
Note
Note!
STOP
Siemens
Building Technologies
When mounting note the following:
The controller should not be freely accessible after mounting.
Ensure adequate air circulation to dissipate heat generated during operation.
Easy access is required for service personnel
Local installation regulations must be observed.
The mounting instructions and a drilling template are printed on the controller
packaging.
The RXC20, RXC21 and RXC22 room controllers are commissioned with the RXT10
commissioning and service tool. The RXT10 is plugged into the tool socket on the
room controller or room unit for connection to the L
The commissioning procedure for the entire Desigo RXC range is described in detail in
the RXT10 user manual, document CM110669.
The labeling fields "Appl." and "Loc." are used to indicate the application actually loaded
and the location of the controller, either in writing or by use of printed adhesive labels
(see "Label" under "Mechanical design").
All applications (including basic applications 00020, 00021 and 00022) allow interroga-
tion of the inputs and control of the outputs using the RXT10 commissioning and ser-
vice tool. This enables the fan-coil manufacturer to test the installed units before deliv-
ery.
The L
W
® bus plug (terminals 17 and 18) can be removed and reconnected at
ON
ORKS
any time, even while the controller is in operation. Only the original bus plug may be
used.
In the event of a long-term short circuit (approx. 4 minutes) or overload,
the thermal fuse in the transformer may trip.
Subsequently, the device must be exchanged.
There is no protection against accidental connection on the AC 24 V side.
Mains AC 230 V for the supply and for the relays must be disconnected before
plugging and unplugging the terminal blocks (danger of electric shock!)
If serial wiring is applied on the terminal block 19/21, the connection will be
interrupted if the block is removed from the controller (the jumpers 19-19 and
21-21 are on the PCB, not in the block, see terminal diagrams on pages 10 ... 12).
RXC20, RXC21, RXC22 – Room controllers
W
® bus.
ON
ORKS
CA2N3834en_09
7/16
2013-06-16
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