UAB KOMFOVENT we reserve the right to make changes without prior notice
11
VAV-18-11
3. ELECTRICAL CONNECTION TO THE AHU
When pressure sensors are mounted, they must be connected to the automation of the AHU. If pressure
maintenance is needed in both airflows, two pressure sensors must be connected. Depending on the type of
automation, electrical connections must be performed strictly according diagrams 3a or 3b.
VAV function can also run with only one pressure sensor. In that case, pressure will be maintained in the
airflow, where pressure sensor is connected and the fan of other airflow will follow in parallel (master-slave
configuration). Pressure sensor is connected only to these automation terminals, which corresponds to the
airflow where sensor is installed.
For sensor connection it is recommended to use 3×0,5mm
2
shielded cable.
31
32
33
34
35
36
C5 pagrindinė
plokštė
1 2 3
Tiekiamo oro
slėgio jutiklis
1 2 3
Šalinamo oro
slėgio jutiklis
28
29
30
31
32
33
C6 valdiklio
plokštė
1 2 3
Tiekiamo oro
slėgio jutiklis
1 2 3
Šalinamo oro
slėgio jutiklis
31
32
33
34
35
36
C5 main
module
1 2 3
Supply air
pressure
sensor
1 2 3
Exhaust air
pressure
sensor
31
32
33
34
35
36
C5 главный
модуль
1 2 3
Датчик
давления
приточного
воздуха
1 2 3
Датчик
давления
вытяжного
воздуха
28
29
30
31
32
33
C6 controller
board
1 2 3
Supply air
pressure
sensor
1 2 3
Exhaust air
pressure
sensor
28
29
30
31
32
33
Плата
контроллера C6
1 2 3
Датчик
давления
приточного
воздуха
1 2 3
Датчик
давления
вытяжного
воздуха
Fig. 3a. Pressure sensor connection diagram for C5 automation
31
32
33
34
35
36
C5 pagrindinė
plokštė
1 2 3
Tiekiamo oro
slėgio jutiklis
1 2 3
Šalinamo oro
slėgio jutiklis
28
29
30
31
32
33
C6 valdiklio
plokštė
1 2 3
Tiekiamo oro
slėgio jutiklis
1 2 3
Šalinamo oro
slėgio jutiklis
31
32
33
34
35
36
C5 main
module
1 2 3
Supply air
pressure
sensor
1 2 3
Exhaust air
pressure
sensor
31
32
33
34
35
36
C5 главный
модуль
1 2 3
Датчик
давления
приточного
воздуха
1 2 3
Датчик
давления
вытяжного
воздуха
28
29
30
31
32
33
C6 controller
board
1 2 3
Supply air
pressure
sensor
1 2 3
Exhaust air
pressure
sensor
28
29
30
31
32
33
Плата
контроллера C6
1 2 3
Датчик
давления
приточного
воздуха
1 2 3
Датчик
давления
вытяжного
воздуха
Fig. 3b. Pressure sensor connection diagram for C6 automation