FloAire FAV-M - Manual (Page 10)

10
Ductwork Sizing Chart Single Blower Ductwork Sizing Chart Dual Blowers
Blower Size Duct Size
(Inches)
Duct Length
(Inches)
Blower Size Duct Size
(Inches)
Duct Length
(Inches)
10 14 x 14 30 222 77 x 28 66
12 16 x 16 36 225 88 x 32 75
15 20 x 20 45 227 96 x 36 81
18 24 x 24 54 230 104 x 38 90
20 26 x 26 60 233 116 x 44 99
22 30 x 30 66 236 122 x 44 108
25 32 x 32 75
27 36 x 36 81 WARNING!!
Failure to undersize ductwork size or length
may cause system affect and reduce the
performance of the equipment.
Using the unit to support the ductwork may
cause damage to the units casing.
30 38 x 38 90
33 44 x 44 99
36 44 x 44 108
Installation Examples
Figure 1: Horizontal Roof Top Installation
Down discharge AMU reduces ductwork
Hood weight supported by support legs
Union, regulator, and shut-off
Roof curb supports unit
Intake facing away from prevailing winds
Figure 2: Vertical Outdoor Ground Installation
Side discharge AMU reduces ductwork
Support stand on concrete pad
Union, regulator, and shut-off
Filter section inside support stand
Ease of serviceability on ground