GB
24
INSTALLATION
INSTALLATION IN WORKPLACE
The A 160ADS, A 290ADS and A 440ADS dehumidifiers are designed for indoor installation. The dehumidifier must be installed
in a horizontal position.
Do not use the dehumidifier in very dusty environments.
If the dehumidifier is installed temporarily, e.g. for drying water damage or dehumidifying a building, plastic hoses are usually
installed instead of flue pipes.
It can be used to dehumidify an entire room, or the water-damaged area can be covered with plastic and the dry air conducted
underneath the plastic. In either case, the wet air must be conducted out of the building, either directly outdoors or via the
building’s air extraction system.
INSTALLATION IN SUSPENDED FOUNDATION
If the dehumidifier is to be installed in a suspended foundation, negative pressure sometimes needs to be created in the
dehumidified area to prevent odours from emanating into the building. To achieve this, the regeneration air is taken directly from
the suspended foundation while the wet air is conducted out through the outside wall.
This creates a slight negative pressure in the dehumidified suspended foundation. In addition to the above instructions, follow
the same instructions as under “Duct connection, fixed installation”.
POSITIONING AND SERVICE AREA
• The A 160ADS, A 290ADS and A 440ADS dehumidifiers are designed for indoor installation.
• The dehumidifier must be installed in a horizontal position.
• Do not use the dehumidifier in very dusty environments.
• All the dehumidifier’s internal parts are accessible from the top of the unit. Leave enough free space (at least 400 mm)
above the dehumidifier to allow inspection, maintenance and replacement of the filter and the rotor.
• If a mounting strip is used, suspend the dehumidifier so that the rotor axle is horizontal and the wet air sleeve is in a low
position.
DUCT CONNECTION, FIXED INSTALLATION
The dehumidifier can either be installed inside the room to be dehumidified or in a separate machine room.
Wet air released from the dehumidifier
The wet air duct must be as short as possible to prevent condensation building up. The wet air duct must slope slightly downwards
to prevent condensation from flowing back into the dehumidifier. Install a sparse wire grille on the outlet. If the wet air duct needs
to be made longer or installed sloping upwards, insulate it against condensation and make drainage holes (approx. 2 mm in
diameter) at the lowest point of the duct.
Process air/dry air, installation in room
If the dehumidifier is installed inside the room to be dehumidified, the process air is usually taken directly from the room without
the need for a duct system. A duct system is usually installed on the dry air outlet. The duct system’s design varies according to the
room’s characteristics and the way the dry air will be supplied.
Process air/dry air, installation outside room
The dehumidifier may either take the process air from outdoors (this air may be precooled or preheated), or else return air may
be taken from the dehumidified room. The dry air from the dehumidifier can either be transported away for processing, or can
be returned to the dehumidified space via a duct.
Install air flow adjustment dampers on the dehumidifier’s dry air and wet air outlets. The connection sleeves fit standard-sized
flue pipes.
PRE-OPERATION INSPECTION
• Check that the dehumidifier is positioned horizontally.
• Check that the wet air is conducted out of the building (NOTE: The small sleeve is for the wet air).
• Check that the filter is clean and correctly installed.
FIXED INSTALLATION
If the dehumidifier is installed as a fixed installation in a suspended foundation, it should be equipped with a fixed hygrometer.
There is a connection point on terminal (8-9) in the dehumidifier.
