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Greenheck Flange Mounted (472664) User Manual

Page 2

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Copyright © 2009 Greenheck Fan Corporation

Double Flange SMD

Rev. 1 June 2009

Item Description
1.

Damper frame

2.

Duct outlet

3.

Fan (not limited to centrifugal)

4.

#10 sheet metal screws

5. Actuator
The actuators are to be installed to function per system
requirements and to be controlled by smoke detection
devices.

1

4

2

3

5

fan iSolation application
For air handling equipment isolation, leakage rated dampers are designed to operate with blades running horizon-

tally. Dampers can be installed in a vertical or horizontal position. Sealants and damper seal materials meet the
requirements of NFPA90A for smoke developed rating (<50) and flame spread index (<25) as tested per UL723/
ASTME84-91A/NFPA 255. Dampers can be attached to the fan system discharge or inlet without being 24 in.
(610mm) of a smoke barrier when used as an air handling equipment isolation damper.