User Manual

Application Sheet FCU046
Fan coil unit with variable fan, 6-way heating/cooling coil (4 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.
2019-02-21
A6V10662231_en--_c_--_06
∂ Heating with LTHW and cooling with CHW changeover
∂ Modulating control of heating/cooling coil 6-way valve (4 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 6-way valve DC 0...10 V fan
C Cooling sequence X2
C
Cooling coil valve position for value X2
H Heating sequence X2
H
Heating coil valve position for value X2
Q Fan output signal Y Valve output signal
SpC Effective cooling setpoint Y1
C
Cooling coil valve position for value Y1
SpH Effective heating setpoint Y1
H
Heating coil valve position for value Y1
TR Room temperature Y2
C
Cooling coil valve position for value Y2
X Valve opening Y2
H
Heating coil valve position for value Y2
X1
C
Cooling coil valve position for value X1 YC Cooling valve
X1
H
Heating coil valve position for value X1 YH Heating valve
SpC
0
100
Y [%] Q [%]
TR [°C]
YH
SpH
YC