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Siemens
RXB21.1, RXB22.1 Room controllers
CM2N3873en_06
Building Technologies
02 Apr 2010
Applications
The following applications are available for the RXB2… room controllers:
Application group (type)
Fan-coil applications
FC-10
(with RXB21.1)
FNC02
2-pipe system with changeover
FNC04 4-pipe
system
FNC08
4-pipe system and
room/supply air cascade control
FNC20 4-pipe
system
with single damper control
FC-11
(with RXB21.1)
FNC10
2-pipe system with changeover and
outside air damper
FNC12
4-pipe system with outside air damper
FNC18
2-pipe system with changeover and
radiator
FC-12
(with RXB22.1)
FNC03
2-pipe system with changeover and
electric re-heater
FNC05
4-pipe system with electric re-heater
Only one application at a time can be activated with the tool (ETS3 Professional, Synco
ACS or "HandyTool").
Types
The RXB21.1 and RXB22.1 room controllers differ only in the number of outputs
available:
Type
AC 24 V triac outputs
Relay outputs
RXB21.1
For 2 thermic valve actuators or
two 3-position actuators
For 3-speed fan control
RXB22.1
For 2 thermic valve actuators or
one 3-position actuator
For 3-speed fan control
internal relay for electric heating
coil
RXZ20.1
Accessories:
Terminal
covers
Ordering
When ordering please specify the quantity, product name, type code and application
group.
30 Room
controllers,
type
RXB21.1/FC-10
Note
Example: