Section 4 – Installation
4.5.7 Installation of the air-quality sensor (optional). (Optional Sensors Board Kit required)
An optional air-quality controller (AQS) can be used in order to control the ventilation unit automatically.
The AQS Controller (RXG Part N° 92097AW) is wall mounted and is supplied with a surface box.
Connect :
Terminals “A1” and “A2” in the AQS controller to
“+” terminal and “0-10V” terminal at AQS Sensor 1 in the MVHR unit
WARNING!
The terminals “A1” and “A2”
must connect directly to the
required AQS Sensor 1
terminals in the Natural Air unit
NOTE!
The AQS Controller is
separately wired with its own L
/ N voltage supply.
Fig. 4.11 Terminal diagram Externally mounted AQS Controller (92097AW)
AQS Controller operational notes :
The unit will run at a higher ventilation rate when the AQS controller indicator light is Red and Flashing.
The AQS controller run on timer option does not operate when used with the Natural Air unit.
4.5.8 Installation of the smoke detector (optional)
To enable the safe cut-out of the ventilation system in case of fire, the ventilation unit can be connected to an
optional smoke detector with a volt free output.
Fig. 4.12A Smoke detector to Main Connector PCB
Fig. 4.12B Smoke detector to External Sensors PCB *
* Important: Do not use the Smoke Detection input on the External Sensors PCB if a smoke detector device
is already connected to the Main Connector PCB.
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