User Manual

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7.2 VAV control of CO2 and VOC

(A) Desigo Room Automation

with room sensors

Room controller DXR2..

Sensors

AQR2540NF + AQR2532NNW

Analog T output

and

AQR2548NF + AQR2530NNW

Analog IAQ output

(higher value of VOC and CO2)

Note: CO2 only analog output is

also possible

GDB181.1E/KN, or

GLB181.1E/KN

Connected to DXR2..

by KNX PL-Link

GDB181.1E/3, or

GLB181.1E/3

Connected to DXR2..

by DC 0/2…10 V (not shown)

VAV control of combined CO

2 and VOC

• Supply and extract air control

• External flow control for VAV with flow controller

and diff. pressure sensor

• Internal flow controller and diff. pressure sensor, or air speed sensor

• Cooling coil, heating/cooling coil, heating coil

• Electric heating coil, modulating, single- or 2-stage

• Room temperature control by 2-pipe system with c/o or 4-pipe system

• Supply air temperature cascade control,

air flow tracking for under/overpressure

• Radiator and chilled/heated ceiling control

• IAQ control

VAV system with cooling

VAV system with heating/cooling

VAV system with electric heating coil

Note: similar applications available for fan powered box