Greenheck Fan WD-323 User's Manual
Contents
1. BIGREENHECK WD 323 For Use With Models CW amp CWB Centrifugal Sidewall Exhaust Fans Special Purpose BACKDRAFT DAMPER Application and Design The WD 323 series is a vertically mounted backdraft damper that is n designed for use with Models CW amp CWB centrifugal sidewall exhaust fans 1916 in to allow horizontal airflow and prevent reverse airflow The damper is opened x by air pressure differential and gravity and closed by springs Optional motor pack converts to motorized operation Standard Construction Frame 0 063 in 1 6mm extruded aluminum Damper Blades 0 025 in 64mm roll formed aluminum Size Axles 16 in 4 8mm diameter plated steel full length Bearings Synthetic sleeve type Linkage 0 064 in 1 6mm aluminum tie bar Spring assisted to close blades Vv Blade Seals Vinyl 1516 in 4 Sizes Available 8in x8in 203mm x 203mm K 10 in x 10 in 254mm x 254mm 12 in x 12 in 305mm x 305mm 15 in x 15 in 381mm x 381mm l lt 6 Yoin Max gt 17 in x 17 in 432mm x 432mm 20 in x 20 in 508mm x 508mm k 1214 in Max gt 25 in x 25 in 635mm x 635mm Options at additional cost e WD 323 Motor Packs 24v 115v 208 230v or 440v e End Switch Kit Model 851038 W amp H dimensions furnished approximately 1 8 in 3mm under size W is always parallel to damper blades P GREENHECK P O Box 410 Schofield WI 54476 0410 715 352. 9 6171 greenheck com Copyright 2005 Greenheck Fan Corporation WD 323 Rev 3 April 2005
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