Assortment / System Description

63
Room controllers RXB/RXL
In buildings having a large number of rooms, such as office buildings, schools or
hotels, the RXB/RXL room controllers ensure individual comfort in every room.
The controllers forward the heat or cooling energy demand signal from the rooms
via KNX as a heat or cooling energy request to the Synco 700 controls.
T
T
T
T
1
2
3110Z39en
Heat request
Heat demend
Heat demand
Heat demand
Heat demand
Heat demand
Heat source
DHW heating Heating circuit
fan coil
Fan coil
room A
Fan coil
room B
Fan coil
room C
Controller 1 Controller 2 Controller 3
Controller 4 Controller 5 Controller 6
KNX TP1
Heat request
Together with the Synco controllers, which ensure the production and distribution of
heat/cooling energy, the room controllers make certain the required room
temperature is reached at the right time.
So ideal room comfort conditions are guaranteed any time, reliably and economi-
cally, because due to their control accuracy and energy efficiency, Synco room
controllers RXB/RXL are eu.bac-certified (eu.bac = European Building Automation
and Controls Association).
Type of device Product no. Data Sheet
Room controller, AC 230 V
For fan coil unit systems:
- With 1- to 3-speed fan control
- With 1- to 3-speed fan control and electric reheater
RXB21.1
RXB22.1
N3873
Room controller, AC 24 V
For fan coil unit systems:
- With 1- to 3-speed fan control
- With 1- to 3-speed fan control and electric reheater
RXB21.1
RXB22.1
N3877
Room controller, AC 230 V
For chilled ceilings and radiators
RXB24.1
N3874
Room controller, AC 24 V
For chilled ceilings and radiators
RXL24.1
N3878
Room controller, AC 230 V
For fan coil unit systems:
- With 3 control outputs DC 0...10 V
- With 3 control outputs DC 0...10 V
RXB39.1
RXL39.1
N3875
N3876
HIT  HVAC Integrated Tool (see page 87)
To select and engineer plants operating with Synco RXB/RXL
www.siemens.com/HIT
Brief description
Overview