AAON RN SERIES Installation Operation & Maintenance page 30

CAUTION
All roofing work should be performed
by competent roofing contractors to
avoid any possible leakage.
CAUTION
Where the supply or warm air duct
passes through a combustible roof, a
clearance of 1
maintained between
edges of the duct and combustible
material in accordance with National
Fire Protection Association Standard
No. 90A. Provide
enclosure between structure and roof
and all joints must be sealed with
mastic roofing to ensure a watertight
seal.
Be careful to install the provided neoprene
isolator according to the following figure
prior to setting the unit on the curb.
30
inch must be
the outside
flashings or