Technical data

2928
0 A A+10% B
min
max
0
0
A
min
max
0
B
CONTROLS
FIGURE 1
AIR VOLUME CONTROL
FIGURE 2
START, STOP AND AIR VOLUME CONTROL
CONTROL VIA CO
2
SENSOR
A CO
2
sensor measures the CO
2
level in the room, and
sends the reading to the control system. The control
system then adjusts the rate of air replacement in the
room according to the CO
2
level, reducing the unit's
energy consumption to the minimum.
AIR VOLUME CONTROL FIGURE 1
The unit can be set to run with a reduced standard air
volume (min.) for basic ventilation. If the CO
2
level in
the room exceeds the programmed lower limit (A),
the CO
2
sensor will cut in and increase air volume.
If CO
2
levels continue to rise, the air volume will be
increased linearly up to the maximum volume (max.)
at the upper CO
2
limit (B) and above.
START, STOP AIR VOLUME CONTROL FIGURE 2
If the unit is completely controlled by the CO
2
sensor,
it will start with a little more than the standard air
volume (min. +x) when the CO
2
level exceeds the
programmed lower limit plus 10% (A + 10%).
If CO
2
levels continue to rise, the air volume will be
increased linearly up to the maximum volume (max.)
at the upper CO
2
limit (B) and above.
If the CO
2
level falls below the programmed lower
limit (A), the unit will stop again.
A PIR/MOVEMENT SENSOR ensures the lowest
energy consumption possible, as ventilation only starts
when there is movement in the room. Variable run-on
time can be programmed in the Airlinq control system.
CONTROL VIA
MOVEMENT SENSOR PIR
The ventilation unit is set to start/stop via a signal from
a PIR sensor. The unit will start upon a signal from the
PIR sensor, e.g. triggered by movement in the sensor
zone. The unit will start in normal operation with the
programmed air volume and inlet temperature. When
the signal ceases, the unit will stop after the prepro-
grammed run-on time. PIR control is often used to
activate full operation on units which provide basic
ventilation when there is no-one present.
CO
2
SENSOR - WALL-MOUNTED OR BUILT-IN
automatically aligns the ventilation level to the CO
2
level in individual rooms.
CONTROL PROCESSES
WITH SENSORS
To follow is a look at the different
advanced control processes.