Roof Mounted Exhaust Fan Installation Detail

Radial roof exhaust fan detail.

Roof mounted exhaust fan installation detail.

Wall bottom title fan frame seccure fan motor mount blades blocking frame to wire guard motor mount building wall exhaust air duct duct collar connection neoprene pad concrete base roof slab flexible top of parapet see architectural drawing for roof construction and flashing counterflashing for fan details and other. Duct already wrapped in insulation at home centers. Pipe sleeve thru floor slab or wall. Piping penetration at wall.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Relief and intake. Check for and retighten any bolts or screws that may have become loosened. Rectangular transitions offsets and elbows.

You can find 4 in. Before installing your roof mounted exhaust fan inspect the equipment for any interior or exterior damage. Package dircet drive propeeler type wall mounted fan. Then turn the blower wheel by hand to make sure that it is able to rotate freely.

Make sure you have all of the accessory items and that they are also damage free. Although this isn t always possible in attic crawl spaces you should always insulate the duct to prevent condensation problems. Primary secondary chilled water instrumentation diagram.