User Manual

Application Sheet FCU042
Fan coil unit with variable fan speed, heating and cooling coil
(4 pipe) on triac output
DXR2..09T-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.
2019-02-21
A6V10662233_en--_c_--_01
∂ Heating with LTHW and cooling with CHW
∂ Modulating control of heating and cooling valve (4 pipe) on triac 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 R Room
B1 Extract air temperature sensor R1 Room operator unit with
B3 Supply air temperature sensor temperature sensor
D1 Window contact YC Cooling coil valve
D2 Presence detector YH Heating coil valve
Q1 Variable speed fan
Function diagrams Heating/cooling valves DC 0...10 V fan
Q Fan output signal Y Valve output signal
SpC Effective cooling setpoint YC Cooling coil valve
SpH Effective heating setpoint YH Heating coil valve
TR Room temperature
SpC
0
100
Y [%] Q [%]
TR [°C]
YH
SpH
YC