7
Copyright 2012 MacroAir
AirStar Installation Manual
Roof Slope=
Rise/Ru
n
Fan Diameter
Run=12"
Rise=?"
NO OBSTRUCTIONS IN THIS AREA
(15% OF FAN DIAMETER
)
Total fan height approximately19.5"
The exten
sion lengths below are minimum recomendations only, based soley on roo
f
pitch and fan diameter. Other consideration must be evaluated when determinin
g
extension requirements, such as placement of lights, sprinklers systems, HVAV syste
ms
and so on. In addition, OSHA requirements state that fan blade must be a minimum
of 1
0
feet (3.05 Meters) above the floor. Contact our sales department for assistance with
fan
placment and extension selection.
Fan Clearance And Extension Guide
Slope
2/12
4/12
6/12
8/12
10/12
Roof Anlgl
e
9.
5
18.
4
26.
6
33.
7
39.
8
Fan
Diameter
Recomended Lengt
h
Clearance
Zone Radius
8
1 ft
1 ft
2 ft
3 ft
4 ft
14.5"
10
1 ft
2 ft
3 ft
4 ft
5 ft
18"
12
2 ft
3 ft
4 ft
5 ft
6 ft
32.5"
