12
1.
Determine the required annular gap from the dia-
gram, taking into account the calculated pressure
drop and air flow rate for the individual section.
Example:
Engineering plans provide the following details for
the individual section:
■
Supply air valve for ceiling installation: DN 125,
360° air discharge angle
■
Pressure drop: 20 Pa
■
Air flow rate: 52 m
3
/h
Annular gap to be set: 6 mm
2.
Set determined annular gap
A
at the supply air
valve for setting into a ceiling.
3.
Record the value in the commissioning report.
Floor vent
100
300
A
110
Fig. 6
Max. flow rate: 35 m
3
/h
A
Aperture width
Commissioning, inspection, maintenance
Metal ductwork (flat): presetting the…
(cont.)
5793 605 GB
