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 9BFNC20 – Four-pipe fan coil, controlled by one damper 2013-06-07
Ref.
Description
N1
Room controller.
R1
Room unit
B1
Return air temperature sensor, room temperature sensor.
D1
Window contact
2)
.
D2
Presence detector
2)
.
Q1
1- or 3-speed fan
4)
.
YM
3-position damper actuator, AC 24 V
3)
.
2) Type of operation (N/O or N/C) can be selected.
3) Do not exceed the max. simultaneous load on outputs Y1...Y4: 9.5 VA (see data sheet 3873).
4) Do not connect the fans in parallel (or use cut-off relays).
A current list of compatible devices is available in the Desigo RX hardware overview
(N3804).
The following parameters are available with application FNC20.
They are set via ETS, ACS, or HandyTool.
Menu
Parameters.
Values/Range
Basic setting
Communication
Communication mode
S-mode / LTE and S-mode
S-mode.
Receive timeout 0...105 min. 60 min.
Send heartbeat
0...105 min.
45 min.
Room temperature setpoints
Protection cooling setpoint
10...40 °C
40 °C
Economy cooling setpoint
10...40 °C
35 °C
Precomfort cooling setpoint
10...40 °C
28 °C
Comfort cooling setpoint 10...40 °C 24 °C
Comfort heating setpoint
10...40 °C
21 °C
Precomfort heating setpoint
10...40 °C
19 °C
Economy heating setpoint
10...40 °C
15 °C
Protection heating setpoint 10...40 °C 12 °C
Sequences
Damper setting
Running time damper heating
0...300 sec
150 sec
Running time damper cooling 0...300 sec 150 sec
Switchover period H/C
0...300 sec
0 sec
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
List of equipment
Note
Configuration