GB.COMPACTUT.170622
Registered design. The company reserves the right to make design changes without prior notice.
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INSTALLATION
FUNCTIONS
*FUNCTIONS*
TEMPERATURE
AIR FLOW/PRESSURE
FILTER
OPERATION
HEATING
COOLING
IN/OUTPUTS
IQnomic Plus
ALL YEAR COMFORT
9.3.1.5 Clean Air Control
The Clean Air Control function is used in ventilation sys-
tems where the aim is to regulate the airflow according to
the content of emission/impurities in the room air.
The TBLZ-1-60 VOC sensor accessory (Volatile Organic
Compounds) is required. The VOC sensor measures the
content of emissions/impurities in % VOC.
When an occupant emits CO
2
, this creates a proportional
amount of emissions/impurities which are measurable by
the VOC sensor. For an approximate translation of the %
VOC to CO
2
content, see the diagram.
When the air handling unit is energised for the first time,
the VOC sensor is initialised and this involves transmitting
a steady signal of approx. 50% VOC for 6 hours (applies
to the VOC sensors with Part No. 328964-01. VOC sen-
sors with Part No. 328964-02 are initiated at the factory).
If the unit at a later time is de-energised, and is subse-
quently reenergised, the sensor is reinitialised for 15 minu-
tes (provided that initialisation during the first energising
occasion was not interrupted).
When the VOC sensor measures contents of emissions/
impurities that are lower than the preset value; the air
handling unit’s supply air and extract air flows are then
equivalent to the preset min. flows. When the VOC sensor
instead measures contents of emissions/impurities that are
higher than the preset value, the supply air and extract air
flows are variably increased until the preset value or max.
flow is reached.
When the Clean Air Control function is activated, the fan
regulation modes are automatically selected (extract air
fan demand controlled, supply air fan slave controlled).
Later on, they can only be read under Functions in the
menu.
Settings:
Value Setting Factory
range setting
Clean Air Control Inactive/Active Inactive
VOC low speed 10 - 90 % 50 %
VOC high speed 10-90 % 30 %
Min. flow * m3/s 0.08 m3/s
Max. flow * m3/s 0.2/0.3 m3/s**
* )The setting range is the same as the min./max. setting of the
air handling unit.
** Size 02 = 0.2 m3/s, Size 03 = 0.3 m3/s
400
10 20 30 40 50 60 70 80 90
% VOC
CO
2
content, ppm
Example:
800 ppm is equivalent to approx. 30% VOC.
If influenced by other emissions/impurities in the air, such
as cooking odours, cigarette smoke, etc., the VOC content
increases in relation to the CO
2
content.
* AIRFLOW/PRESSURE *
SA FAN REGULATION
EA FAN REGULATION
CLEAN AIR CONTROL
OUTDOOR TEMP COMP.
SA DOWN REGULATION
SLAVE CONTROL
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