[MBA_NKBD_EN] Rev.: 10/2015
11
No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data.
All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.
BOGA GmbH
• Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • [email protected] • www.airwin.net
9. Installation
Proper installation in accordance with the following instructions will ensure trouble-free operation of the
NKBD.
The location of the NKBD installation is predetermined by the requirements of the ventilation system and
should be defined before installation work is commenced.
Protect humidifier interiors necessarily from pollution! The protective foil should only be
removed immediately prior to commissioning when the air ducts have been cleaned!
9.1 Installation conditions
– General notes
Installing an insulated tubular lamp in the duct and a window will significantly facilitate visual func-
tion checks on the humidifier.
The place of installation must allow the humidifier to be easily removed and replaced.
The NKBD must be installed in absolutely horizontal position to ensure that ALL the ultrasonic
transducers are covered by the same level of water
The automatic drainage of the fluid tank and the automatic flushing of the pure water line require
a free discharge on site according to DIN 1988 part 4, EN 1717
In the immediate vicinity of the duct humidifier, the ventilation unit should be of waterproof design
(stainless steel or with corrosion-proof coating) and should be provided with a water discharge
outlet.
The air velocity in the free duct cross section (net area after installation of the humidifiers)
V = 1.0 - 4.0 m/s. In the case of higher air velocities, perforated metal plates should be installed in
the vicinity of the humidifiers.
The distance from the bottom edge of the NKBD to the ceiling of the air duct must be min. 390
mm (fig. 5 and 7).
The distance between the NKBD and the duct/trough base must be min. 100 mm (fig. 5 and 7).
The distance between the NKBD control housing and the duct side wall must be min. 70 mm
(fig. 6 und 8).
The distance between the NKBD and the duct side wall must be min. 200 mm (fig. 6 and 8).
The distance necessary from fixtures in direction of flow differs widely (aerosol disintegration dis-
tance). It is dependent on air velocity, air temperature, actual and set point humidity and must be
determined at the planning stage.
To achieve the nominal humidification, it is important that the air velocity is in the range
specified. Furthermore, it is very important that the humidifier is installed in an even
laminar air flow. Maybe a perforated plate or a flow straightener is necessary.