Dealing with Problem Installations
(cont.)
Check if the unit selection is excessively over sized, which would require the duct and
outlets to be significantly upgraded to carry the additional air quantity of the Cooler.
The Cooler Selection Chart can be used as a reference in this respect, for the
calculation of minimum sized ducting and outlets to upgrade to.
Operation Noise:
•
Check that the ducting has not been damaged or restricted.
•
Check the dropper duct has been secured to the roof timbers, or supported
sufficiently, so as not to transfer vibration through other structural members of the
building.
•
Check the water pipe and wiring (conduit) is not transferring vibration to structural
members of the building.
•
Check the duct and fittings are insulated.
•
Check the Cooler is not transferring excessive vibration onto the dropper duct of
the buildings structure.
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