Greenheck WD-340 User Manual

11⁄2 in.

3

1

⁄2 in.

1

1

⁄2

in.

5

⁄8 in.

Max.

Damper

Size

Airflow

2

3

⁄4 in.

Max.

6 1⁄2 in.

Application and Design

The WD-340 is designed to be bolted to the flanged outlet of Greenheck
Model SWB utility blowers. Maximum velocities not to exceed 2500 fpm.

Standard Construction

Frame: 18 ga. (1.3mm) galvanized steel.

Blades: 0.032 in. (.8mm) roll-formed aluminum

Axles: 3/16 in. (4.8mm) dia. zinc plated steel, full length.

Bearings: Synthetic (acetal) sleeve.

Linkage: 0.064 in. (1.6mm) aluminum tie bar.

Blade Seals: Vinyl.

Size Limitations

Minimum Panel Size: 6 in. W x 6 in. H

(152mm x 152mm)
Maximum Panel Size: 36 in. W x 72 in. H
(914mm W x 1829mm H)

Options and Accessories (at additional cost)

• Motor Packs (24 Vac, 115 Vac, 208/230 Vac, 440 Vac)

• End Switch Kit (Part #851038)

WD-340

For Use With Model SWB

Utility Blower

Special Purpose

BACKDRAFT DAMPER

NOTE: Actual size same as nominal

size.

Copyright ©2005 Greenheck Fan Corporation

WD-340 Rev 3 April 2005