hajdu HB300C Manuel De Mise En Service, D'opération Et D'entretien page 86

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• During the operation of units with air ducts, condensate forms outside the duct at
the air outlet as well.
• Connect the air ducts to the flanges of the device so that the weight of the duct is
not applied on the flanges.
• Place anti-vibration joints between the ducts and the device.
• The flanges or the connections between individual duct sections must be airtight,
to avoid any air leakage in the intake/extraction branches, which would impair the
efficiency of operation.
• Reduce pressure drop by optimizing the route, the type and number of bends and
branches.
• Use large radius pipe bends.
AIR PIPE OUTLET
• Avoid recirculation of exhaust air. (E.g., by using pipe ends turned away from
each other for intake/exhaust pipes).
• Min. distance between intake/exhaust pipe ends: 800mm
• Use elbows with a 90° downward bend.
• When positioning the outlet of the intake pipe, make sure to minimise the quantity
of contamination (dust, odours, exhaust gas) that can get into it.
•
Make sure that the outlet of the exhaust pipe is away from terraces, balconies,
and the border of other people's property.
• The outlet of the exhaust pipe should not be installed downwind.
• If an air filter (not included) is used, it must be placed on the outside air intake or
on a duct, which is easily accessible for maintenance.
• The recommended filter diameter is at least 2.5 times the diameter of the intake
pipe, the recommended hole size is approx. 1.2 mm