Greenheck Fan NYB 用户手册

3

Dampers

 - Gravity and 

motorized dampers are
designed to prevent outside 
air from entering back into 
the building when the fan is 
off. Damper sizes are shown
on the performance pages.

Disconnect Switches

- A

wide selection of NEMA
rated switches are available 
for positive electrical 
shutoff and safety, including 
dust-tight, rainproof 
and corrosion-resistant. 
Switches may be internally 
or externally mounted.

Curb Extension

 - 

Extensions raise the fan 
discharge above the 
roofline and provide an 
accessible mounting 
location for dampers. Insect screen bases 
constructed with a removable fine mesh are 
recommended for applications where insect 
entry must be prevented.

Roof Curbs

 - 

Prefabricated
roof curbs reduce 
installation time and 
costs by ensuring 
compatibility between 
the fan, curb and roof 
opening. All curbs are
insulated with fiberglass. A wide variety of roof
curbs are available including: flanged, pitched 
and sound-absorbing.

Curb Seal

 - Rubber seal between fan and curb 

to assure proper sealing when attached to a 
curb.

Coatings

 - 

Wide variety of 

coatings and colors are 
available for decorative to 
corrosive applications.

Permatector™

is our standard 

coating. Typically used for
applications that require 
corrosion resistance in indoor 
and outdoor environments.

Hi-Pro Polyester

is resistant to salt water, 

chemical fumes and moisture in more 
corrosive atmospheres. Typically used for
applications that require superior chemical 
resistance, excellent abrasion and outdoor UV 
protection. This coating exceeds protective
qualities of Air Dry Heresite and Heresite
Baked Phenolic.

Baked Enamel Decorative Coatings

are heat 

cured enamels applied either as wet paints or 
electrostatic powders. Customers can choose
from 16 standard decorative colors or color
match any color.

All coatings with relative resistance charts can
be found in Greenheck’s Product Application
Guide, Performance Coatings for Ventilation
Products.