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
Stock No. Product No. DT
S55373-C121 RXB39.1/FC-13 A
RXB39.1/FC-13 Room controller for fan-coil applications with KNX communication
The RXB39.1 room controller is used for temperature control in individual rooms.
• For 2-pipe and 4-pipe fan coil systems with or without changeover
• PI control
• KNX bus communication
• Connection to Desigo building automation and control system via PX KNX
• DC 0...10 V control of valve and actuators, fan (ECM), and electric heater
• 2 Potential-free relay contacts to release fan and electric heating
• Commissioning with ETS Professional, „Handy Tool“ QAX34.3 or Synco ACS
• Operating voltage AC 230 V
• Plug-in screw terminals
Data sheet N3875
Operating voltage AC 230 V
Frequency 50/60 Hz
Power consumption 12 VA
Control algorithm PI
Communication Bus: KNX
Room unit: PPS2
Service plug ETS Professional, ACS, HandyTool
Analog inputs, number 2
Analog outputs, number 3
Analog output, signal DC 0...10 V
Digital inputs, number 4
Relay outputs, number 1
Electric reheater relay 1
Relay output, switching voltage AC 250 V
Relay output, switching current 5 (4) A
Mounting On DIN rail
Mounting location Ceiling voids with cover
Fan coil
Panel
Degree of protection IP20
Dimensions (W x H x D) 152 x 120 x 62 mm
29-Wall-mounted.indd 38 19.08.2018 15:13:29