SIRE XROOM, Руководство по эксплуатации и установке

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Fig. 30
4.2.2. Radon Sensor Connection – AQS RADON
- A radon sensor may be connected to the unit to measure the content of radon concentration in the air
at the unit installation site. Thanks to the sensor, the radon is vented and thus its concentration in the
space reduced. Venting is the only way to effectively get rid of the radon load contained in the air in the
room.
1. Technical Parameters of the Sensor for Connection to the Unit
o
24VDC sensor power supply
o
0- 10VDC analog output
o
Max. sensor power consumption 5W
o
Analog sensor input resistance 100kΩ
-
The power supply GND is shared with the GND of the analog input. If the connection is not carried out
correctly, there is a risk of destroying the control board
4.2.2.2. Functionality of the unit after connecting the radon sensor
- The unit responds with continuous control to the real-time need of ventilation induced by the sensor:
o
after reaching the concentration of radon in a ventilated room of 350 Bq/m
3
, ventilation is
switched on to the minimum flow rate,
o
if the reduction of the room radon concentration is not achieved, the control of the unit
increases the flow up to the maximum flow value set by the user,
o
the control of the unit starts to decrease the flow rate continuously again as the concentration
decreases,
o the objective of the regulation – ventilation rests in finding the ideal degree of ventilation (flow
rate) depending on the concentration of the radon in the ventilated room, which is why the unit
can ventilate for a long time until the safe limit of radon concentration or its complete removal
is achieved,
o
when the concentration is reduced to 300 Bq/m
3
, ventilation is switched off and the unit is
switched to the standby mode.
4.2.3. External Contact Connection – EXT 1
- Unit control allows for connection of external contact for remote switching on and off of the unit
(remote control ON/OFF).
- External contact is designed as potential-free and can be switched on e.g.:
o
Using magnetic door contact (a contact used in security systems). The contact can be installed,
for example, on the window. When the window is opened, the unit stops, and then restarts
when the window is closed.
Limit contact
EXT1
Radon sensor
Jumper for
switching the
logic of the NC
and NO switching
Fig. 29
36
Version 1 – GBR(23/06/2021) D-502-0152