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3. INSTALLATION
3.6 Installation and connection of components
Before starting up and commissioning the DanX AF unit it is important to have installed all
components of the air handling unit correctly.
All installation and connection work should only being carried out by trained specialists or by
people supervised by authorized staff. It is the responsibility of the fitter to read and
understand this guide and other given information.
3.6.1 Condense water outlet
Drainage from the condensate tray is taking place through a connection in front of the
inspection side through the cover panel. On AF units we will see one outlet on the exhaust
side (negative pressure). There are two different types of water traps available.
Drain trap with ball valve
This drain trap should only be installed where there is negative pressure in the drain system
as the ball valve will open on positive pressure. The inserted float ball prevents the intake of
air under dry operation, where in a traditional drain trap you have to refill water to avoid air
been sagged into the unit. At the same time you need less space in height than on a
traditional drain pipe. This drain trap can be used up to -900 Pa.
Normal drain pipe
The normal drain pipe with screw cap for filling with water and check can be used for
negative and positive pressure. The length of the pipe can be calculated the following way.
Negative pressure : H1 = ∆p + 50 mm
∆p = pressure in mm WS (100 Pa = 10 mm WS)
3.6.2 Fresh air damper
The damper motor is installed and pre wired and connected to the terminal strip of the AF
unit. For further information's see the electrical diagram of the unit.
H2 = ∆p / 2 + 50 mm
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