Greenheck Isolation Assembly Instructions (468646) - Manual (Page 4)

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There are several types of bases available for use with centrifugal/industrial process fans. Table 1 shows
available uses for specific sizes and styles of fans.
Types of Isolation
Table 1
Arrangement Fan Type Direct Mount Structural Base Inertia Base
1
AF/BISW
No Yes Yes
IPA*
3
AF/BISW
No Yes Yes
AF/BIDW
4, 8
IPA* Consult Factory
Yes Yes
AF/BISW Yes
9
AF/BISW 7-36
Consult Factory Yes Yes
IPA 5-19*
AF/BISW 40-73
Consult Factory Yes Yes
IPA 21-41*
10
AF/BISW 7-36 Yes
Yes Yes AF/BISW 40-73 Consult Factory
IPA 5-19* Yes
Structural Base — Consult Factory on DB, BAD or TAD discharges.
Inertia Base — Not available on DB, BAD or TAD discharges.
*Consult Factory for isolation options for material handling fans (IPW/IPO)
Below are photos of the isolation types offered: Direct Mount [no structural base], Structural Base, and Inertia
Base. Bases can be supplied with or without isolators. Contact a Greenheck representative for additional
information on each type of base and their advantages.
Structural Base or
Concrete Filled Inertia Base
with Free Standing Spring Isolators
Direct Mount
with Neoprene Isolators