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FLEXIBLE INSULATED AIR DUCT ISOVENT
General recommendations
When installing flexible insulated ducts, it is necessary to take into account the route of laying, the number of bends, the angle
of bends and the number of deflections between the fixing points, since these factors affect the resistance of the ducts. Use a
minimum flexible air duct length for connection of ventilation elements. Excessive duct lengths are not recommended, as you
may need some free space for relocation of diffusers or other elements. Avoid mounting of flexible insulated air ducts in places
where direct sunlight can affect them. Long-term sunlight exposure can lead to an external layer destruction, while UV lamps
mounted in the ventilation system – to an internal. Diffusers and other ventilation elements must be attached to supporting
structures separately from the insulated duct. If the external layer of the insulated air duct is damaged, it can be repaired by means
of an adhesive tape, suitable for that kind of work. In case of the internal layer damage the insulated air duct should be replaced.
Mounting and operation
It is necessary to stretch an insulated air duct to the maximum
before mounting.
Avoid ducting around sharp corners or duct contact with metal
fixtures or pipes. Air duct bend radius along the central line
should be not less than one air duct diameter.
38
1xD
It is forbidden to mount the duct in a compressed state or
with an excessive length, as this will significantly increase the
aerodynamic resistance in the duct.
It is strictly forbidden to mount insulated air ducts near
heat emitting appliances such as heaters or heat pipes, the
temperature of which exceeds the recommended temperature
for air ducts application.
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