UNTES URTP055 Instructions For Installation, Commisioning, Maintenance And Use page 20

For air duct-connection systems from the bottom;
For air duct-connection systems from sides;
Some points should be paid attention to in movements of air ducts right after the device. If connection is to be
provided via an elbow joint (and this isn't a preferred method), this elbow joint should absolutely have a wide curve
and shouldn't narrow right after the section. The elbow joint should curve after at least 2 meters. This condition
applies for devices both with bottom and side connections.
Duct connections should be provided suitable to roof connector connection sections. It is crucial that the connections
be water-tight. The necessary isolation should be provided with impermeable elements against outer space effects after
connections.
In addition, regardless of which air duct is used, it should be regarded that the duct wasn't made of inflammable or
poisonous gas materials. The inner surface should be smooth and of a nature keeping no dirt.
Isolations shouldn't let condensations emerge on sheet metal of duct. Connections between ducts should be made in a
flexible manner and shouldn't let vibrations/ sound formation and/ or transmissions.
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