Operating Instructions

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Siemens RXB application library (KNX) RXB – Fan coil applications from FC-10, FC-11, FC-12, FC-13 CM110672en_05
Building Technologies 8BFNC18 – Two-pipe fan coil (changeover) and radiator 2013-06-07
Menu
Parameters.
Values/Range
Basic setting
Motorized Runtime
0...360 s 150 s
Offset
0...360 s 0 s
LTE mode
Heating coil outp bus valve
Off/On Off
Cooling coil outp bus valve
Off/On Off
Heating surface outp bus valve
Off/On Off
Fan control. Fan speeds
– External control
– 1-speed/2-speed/3-speed
3-speed
Fan control.
Manual / Auto
Auto
Minimum on time.
1...10 min
6 min
Temperature sensor B1 – Room
– Return air
– Measured value only
– No sensor
No sensor
Periodic fan kick Comfort
0...90 min (90min = Off)
90 min (Off)
Periodic fan kick Economy 0...360 min (360min = Off) 360 min (Off)
Room unit
Measured value correction
– 3...3 K
0 K
Setpoint offset range
± 0...10 K
± 3 K
Local Comfort mode
Enabled / Disabled
Enabled
Room unit
Without LCD / with LCD
Without LCD
With LCD Display heating/cooling symbols Enabled / Disabled Enabled
Temperature unit
°C or °F
°C
Standard display
No display / Room
temperature / Setpoint
Room temperature.
Setpoint display
Absolute / Relative
Relative
General functions.
Digital input 1
Free (bus = 1) = Contact open/closed
Free (bus = 1)
Occupancy: Occupied = Contact open/closed
= Contact closed.
Window: Window open = Contact open/closed
Digital input 2
Free (bus = 1) = Contact open/closed
Free (bus = 1)
Occupancy: Occupied = Contact open/closed = Contact closed.
Window: Window open = Contact open/closed
Temporary Comfort mode 0...360 min 60 min
On-delay occupancy detector
0...90 min
5 min
Off-delay presence detector
0...90 min 5 min
Central functions
Heating demand signal
Enabled / Disabled
Enabled
Cooling demand signal
Enabled / Disabled
Enabled
Boost heating
Enabled / Disabled
Enabled
Precooling, free cooling
Enabled / Disabled
Enabled
Reset setpoint offset
Enabled / Disabled
Disabled
Master/slave Master/slave Master or slave Master
The room controllers can be ordered preloaded with the application described here.
When ordering, specify the quantity, RXB device name, type code and application
group.
15 Room controllers RXB21.1 with application group FC-11 RXB21.1/FC-11
The controllers are delivered with the basic settings shown above.
Ordering
Example
Note