Data Sheet for Application

Application Sheet
FCU022/FCU022_H
Fan coil unit with variable fan, heating/cooling coil (2 pipe) on
analog output
DXR2..09-101A
1 / 6
Technical information in this document are subject to change. Drawings serve illustration purposes only.
Siemens is not responsible for content and any manual modifications.
2021-09-08
A6V10662231_en--_d_--_04
• Heating with LTHW and cooling with CHW changeover
• Modulating control of heating/cooling coil valve (2 pipe) on analog output
• Automatic or manual variable fan speed control DC 0...10 V
• Room temperature and fan speed operation via KNX PL-Link room operator unit with temperature
measurement
Plant diagram
DXR2…
Room automation station
Q1
Variable speed fan
B1
Extract air temperature sensor
R
Room
B3
Supply air temperature sensor
R1
Room operator unit with
D1
Window contact
temperature sensor
D2
Presence detector
YHC
Heating/cooling coil valve
Function diagrams
Heating/cooling valves
DC 0...10 V fan
Chovr
Changeover
SpH
Effective heating setpoint
C
Cooling sequence
TR
Room temperature
H
Heating sequence
Y
Output signal
Q
Fan output signal
YHC
Heating/cooling valve
SpC
Effective cooling setpoint
SpC
0
100
Y [%] Q [%]
TR [°C]
YH
SpH
YC
100
Chovr
SpC TR [°C]
YHC YHC
0
SpH
Y [%]
H C