User Manual

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Heating, ventilation and air conditioning - room temperature control
Room temperature controllers with detached operation
RXB
Siemens Switzerland Ltd
Building Technologies Division
2019www.siemens.com/gamma
7
Range overview RXB2..
Product Title Triac outputs,
number
Relay outputs,
number
Data sheet Stock No. Product No. DT
Room controller for 3-speed fan 4 3 N3873 BPZ:RXB21.1/FC-10 RXB21.1/FC-10 A
Room controller for 3-speed fan 4 3 N3873 BPZ:RXB21.1/FC-11 RXB21.1/FC-11 A
Room controller with 3-speed fan and
electric heating coil
2 4 N3873 BPZ:RXB22.1/FC-12 RXB22.1/FC-12 A
Room controller for chilled ceilings
and radiators
4 0 N3874 BPZ:RXB24.1/CC-02 RXB24.1/CC-02 A
The application determines the usable actuator (PWM /3-position) with the triac output
Room controller with KNX communication
The controllers are used for temperature control in individual rooms.
• For 2-pipe with changeover or 4-pipe fan coil systems
• For radiator and chilled ceiling (RXB24.1 only)
• Control of thermal valve actuators AC 24 V, PWM, valve actuators AC 24 V (3-position) as well as KNX
bus actuators
• Potential-free relay contacts for fan speed control
• Connecting relay for electric heating (RXB22.1 und RXB39.1)
• KNX bus communication
• Connection to Desigo building automation and control system via PX KNX
• Commissioning with „Handy Tool“ QAX34.3 or Synco ACS
Application description fan coil: CM110672
Application description RAD/CLC: CM110671
Operating voltage AC 230 V
Frequency 50/60 Hz
Power consumption Max. 12 VA
Control algorithm PI
Communication Bus: KNX (S-mode and LTE mode)
Room unit: PPS2
Service plug RXT20.1
Digital inputs, number 2
Relay output, switching voltage AC 250 V
Relay output, switching current 5 (4) A
Triac outputs PWM
3-position
Triac output, switching voltage AC 24 V
Triac output, switching current 0.5 A
Interface type KNX-bus
Mounting On DIN rail
With screws
Mounting location Ceiling voids with cover
Fan coil
Panel
Degree of protection IP30
Dimensions (W x H x D) 113 x 167 x 62 mm
RXB2..
29-Wall-mounted.indd 37 19.08.2018 15:13:29