Data Sheet for Application

ManualsBrandsSiemens ManualsRoom controlsFan coil unit with staged fan, 6-way heating/cooling coil (4 pipe) on analog output, DXR2.E09-101A

Application Sheet

FCU021/FCU021_H

Fan coil unit with staged 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_--_02

• Heating with LTHW and cooling with CHW changeover

• Modulating control of heating and cooling valve (2 pipe) on analog output

• Automatic or manual 3-speed fan control

• Room temperature and fan speed operation via KNX PL-Link room operator unit with temperature

measurement

Plant diagram

DXR2…

Room automation station

3-speed fan

Extract air temperature sensor

Room

Supply air temperature sensor

Room operator unit with

Window contact

temperature sensor

Presence detector

YHC

Heating/cooling coil valve

Function diagrams

Heating/cooling valves

1-2-3-speed fan

Chovr

Changeover

Fan speed 3

Cooling sequence

SpC

Effective cooling setpoint

Heating sequence

SpH

Effective heating setpoint

Fan output signal

Room temperature

Fan speed 1

Output signal

Fan speed 2

YHC

Heating/cooling valve

100

Chovr

SpC TR [°C]

YHC YHC

SpH

Y [%]

H C

SpC

100

Y [%]

TR [°C]

SpH

Q [%]

Summary of content (6 pages)

PAGE 1
Application Sheet FCU021/FCU021_H DXR2..
PAGE 2
Application Sheet FCU021/FCU021_H DXR2..09-101A Fan coil unit with staged fan, heating/cooling coil (2 pipe) on analog output Description of functions Basic functions • PID control for heating and cooling. • The 2 pipe system provides hot and chilled water for the heating/cooling coil. • 0...10 V valves controlled by analog outputs for heating and cooling. • The fan is controlled manual on the room operator unit or automatic in 3 speeds. • The temperature is measured in the room operator unit.
PAGE 3
Application Sheet FCU021/FCU021_H DXR2..09-101A Fan coil unit with staged fan, heating/cooling coil (2 pipe) on analog output Optional 1) Legend Type of unit Data sheet Product No. Qty.
PAGE 4
Application Sheet FCU021/FCU021_H DXR2..09-101A Fan coil unit with staged fan, heating/cooling coil (2 pipe) on analog output Application configuration On-board output Equipment Fan speed Heating/cooling coil valve position KNX PL-Link devices Room operator unit device 1 Values/Range 1-stage; Q14; Normally open 2-stage; Q14, Q24; Normally open 3-stage; Q14, Q24, Q34; Normally open Variable speed; Y10; 0...10 V 2-pipe; Y20; 0...10 V 2-pipe; Y30; 0...10 V 4-pipe 6-way; Y20; 0...
PAGE 5
Application Sheet FCU021/FCU021_H DXR2..09-101A Fan coil unit with staged fan, heating/cooling coil (2 pipe) on analog output Engineering • ABT Site engineering tool is required to configure the DXR2 automation stations. • See the Siemens Download Center at www.siemens.com/bt/download for the latest application configuration and workflow tutorials. • Option combination according to available on-board I/Os on controller.
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Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies © 2015 Siemens Switzerland Ltd Subject to change 6/ 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.