IBIS
a
Installation – Commissioning – Maintenance
20140417
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.
Figure 1. Commissioning.
Figure 2. Planning.
IBIS Cx - XXX
k = XX,X
(
)
q
= flow reading l/s
p
= current pressure reading (Pa
k
= commissioning factor
k-factor
Methodic Errors
Type of obstruction
Length of straight duct (L)
upstream of the IBIS C
upstream of the IBIS C
For m
2
= 5% For m
2
=10%
One 90° bend.
3 x Ød
2 x Ød
Two 90° bends in the same plane.
4 x Ød
2 x Ød
Two 90° bends in aligment at
right angles to one another.
4 x Ød
2 x Ød
One 45° damper.
6 x Ød
3 x Ød
One T-piece.
4 x Ød
3 x Ød
m
2
= methodic error. Method for measurement of airflows in
ventilation Installations.
