Swegon WISE - Air Quality Control

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24
WISE User Manual
Air quality control
Why regulate air quality?
In order to promote a healthy indoor climate by inuencing the
surrounding environment and health. An indoor climate with
impaired air quality can result, among others, in tiredness and
headaches.
How is air quality regulated?
Air quality is measured with an RH, VOC or CO
2
sensor. These
sensors are available both as system accessories and as optional
integrated accessories in room products. VOC and CO
2
values
present measurement values in ppm while the RH value is present
as a percentage. Values are dened in the system for the upper
and lower air quality limits, which form the basis of regulation in
the system. Air quality is regulated based on the highest value in
the room if there are several sensors, irrespective of sensor type.
If necessary, individual air quality sensors can, e.g. when they
are improperly located and do not give a representative value,
be excluded from the calculation of the room’s average value.
This is done under Settings for the relevant air quality sensor by
setting the Mode to Reference.
Operating case
When the measured air quality value comes in between the
lower and the upper limit values, i.e. within the regulation area,
the function’s regulation is enabled to increase the air ow
requirement from 0-100%.
The air ow is controlled linearly between the end positions.
• 0% gives the room’s minimum ow (dierent depending on
the room mode).
• 50% gives the room ow in between min. and max.
• 100% gives the room’s max. ow.
Comparison of VOC level in rooms and
supply air
The aim of this function is to permit blocking of air ow boost-
ing in each room due to a higher VOC supply than the VOC
content in the room. The measured VOC content in the room
is compared with the supply air, and if the VOC content in the
supply air is higher than in the room air ow boosting is blocked
due to a high VOC content in the room. This function requires a
GOLD air handling unit with VOC measurement.
Adjustable room parameters in SuperWISE
Section Description Standard value Min. Max. Unit
Lowest user level
(read/write)
Function
Air quality Operating mode air quality VOC On O Only Occupancy - Installation/Installation Enable or disable the function.
Air quality VOC blocks poor supply air O O On - Installation/Installation Enable or disable the function.
Air quality Upper VOC limit 1200 0 2000 ppm Local/Installation Upper limit for VOC regulation.
Air quality Lower VOC limit 800 0 2000 ppm Local/Installation Lower limit for VOC regulation.
Air quality VOC content, alarm limit 1200 0 2000 ppm Installation/Installation Limit for information alarm.
Air quality Operating mode air quality CO
2
On O Only Occupancy - Installation/Installation Enable or disable the function.
Air quality Upper limit CO
2
1200 0 2000 ppm Local/Installation Upper limit for CO
2
regulation.
Air quality Lower CO
2
limit 800 0 2000 ppm Local/Installation Lower limit for CO
2
regulation.
Air quality CO
2
content, alarm limit 1200 0 2000 ppm Installation/Installation Limit for information alarm.
Air quality Relative humidity operation mode On O Only Occupancy - Installation/Installation Enable or disable the function.
Air quality Mode relative humidity Average value Lowest Highest - Installation/Installation
Selection that determines how the
measured humidity is to be presented
when there are several humidity sensors.
Air quality Relative humidity upper limit 90 0 100 % Local/Installation Upper limit for humidity regulation.
Air quality Relative humidity lower limit 65 0 100 % Local/Installation Lower limit for humidity regulation.
Air quality Relative humidity lower alarm limit 10 0 50 % Installation/Installation Limit for information alarm.
Air quality Relative humidity upper alarm limit 80 50 100 % Installation/Installation Limit for information alarm.