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Types of isolation – Greenheck Isolation Assembly Instructions (468646) User Manual

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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