FloAire NSA User Manual
Page 5
5
Follow SMACNA guides and recommendations for the remaining duct run. Fans designed for
rooftop installation should be installed on a prefabricated or factory built roof curb. Follow curb
manufacturer’s instructions for proper curb installation. The unit should be installed on a curb and/or rail
elevated not less than 14” above any surface. Be sure duct connection and fan outlet are properly
aligned and sealed. Secure fan to curb through vertical portion of the ventilator base assembly flange
using a minimum of eight (8) lug screws, anchor bolts, or other suitable fasteners (not furnished). Shims
may be required depending upon curb installation and roofing material. Check all fasteners for tightness.
The diagrams below show different mechanical installation configurations.
Roof Mount Installation
Wall Mount Installation