Swegon IBISa Installation, Commissioning Maintenance

IBISa
Installation – Commissioning – Maintenance
Accessories
IBIS D:
Duct section of the same design as the IBIS, but
without discs.* )
IBIS C: Sound attenuating measurement and control unit.*
IBIS B: 45° and 90° bend with white painted finish.*
IBIS T:
T-piece with white painted finish.*
*)
Available for sizes 160-400. For 500 and 630, standard accesso-
ries are recommended.
Installation
See next page!
Commissioning
An IBIS C or a flow measuring damper installed in the duct
system upstream of the duct diffuser is recommended for com-
missioning and airflow measurements.
Maintenance
The air diffuser can be cleaned, if necessary, using lukewarm
water with dishwashing detergent added or by vacuum cleaning
using a brush nozzle.
Methodic Errors
Type of obstruction
upstream of the IBIS C
One 90° bend.
Two 90° bends in the same plane.
Two 90° bends in aligment at
right angles to one another.
One 45° damper.
One T-piece.
m = methodic error. Method for measurement of airflows in
2
ventilation Installations.
)
)
)
Length of straight duct (L)
upstream of the IBIS C
For m = 5% For m =10%
2 2
3 x Ød 2 x Ød
4 x Ød 2 x Ød
4 x Ød 2 x Ød
6 x Ød 3 x Ød
4 x Ød 3 x Ød
k-factor
IBIS Cx - XXX
k = XX,X
( )
Figure 1. Commissioning.
Figure 2. Planning.
20140417
q = flow reading l/s
p = current pressure reading (Pa
k = commissioning factor