Greenheck Fan Centrifugal Roof Exhaust Fans NYD دليل المستخدم

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Centrifugal Roof Exhaust Fans
Models NYD and NYB
Direct and Belt Drive
August
2008

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Model NYD & NYB Standard Construction Features Greenheck’s model NYD and NYB tamper-resistant centrifugal roof exhaust fans provide the industry’s best performance and durability for general clean air applications where tamper resistance is required. • Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory and all models are licensed to bear the AMCA Air Performance seal. • Greenheck subjects these products to extensive

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Model NYD & NYB Options and Accessories Dampers - Gravity and Curb Seal - Rubber seal between fan and curb motorized dampers are to assure proper sealing when attached to a designed to prevent outside curb. air from entering back into the building when the fan is off. Damper sizes are shown on the performance pages. Coatings - Wide variety of coatings and colors are available for decorative to corrosive applications. Disconnect Switches - A wide selection of NEMA Permate

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Dimensional Data & Model Number Code B C A 2 1/2 in. (64 mm) Dimensional Data Model A B C Damper Square 3 1 NYD-75 19 (483) 30 ⁄4 (781) 20 ⁄2 (521) 10 (254) 3 1 NYD-90 19 (483) 30 ⁄4 (781) 20 ⁄2 (521) 10 (254) 1 NYD/NYB-100 22 (559) 35 ⁄2 (902) 25 (635) 12 (305) 1 NYD-120 24 (610) 37 (940) 23 ⁄8 (587) 14 (356) 1 NYD-130 24 (610) 37 (940) 23 ⁄8 (587) 14 (356) 1 7 NYD/NYB-140 26 (660) 41 ⁄2 (1054) 26 ⁄8 (683) 16 (406) 5 NYB-180 30 (762) 45 (1143) 32 ⁄8 (829) 18 (457) 1 5 NYB-240 34 (864) 52 ⁄2 (

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NYD-75-A NYD-120-A NYD-100-A NYD-130-B NYD-90-B NYD-90-A NYD-120-B NYD-100-B NYD-140-B Performance Data NYD - Direct Drive Models 1.8 1.8 RPM RPM Density 0.075 lb/ft³ Density 0.075 lb/ft³ 400 1.6 400 1.6 350 350 1.4 1.4 300 1.2 300 1.2 250 1.0 250 1.0 200 0.8 200 0.8 150 0.6 150 0.6 100 0.4 100 0.4 50 0.2 50 0.2 0 0.0 0 0.0 0 300 600 900 1200 1500 1800 2100 0 400 800 1200 1600 2000 2400 2800 cfm cfm 0 500 1000 1500 2000 2500 3000 3500 0 500 1000 1500 2000 2500 3000 3500 4000 4500 3 3 m /hr

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1575 1500 1400 1300 1200 1100 1000 900 1/2 hp 1300 1250 1190 1/3 hp 1130 1060 1/4 hp 1030 990 910 830 1/4 hp Performance Data Model NYB-100 & NYB-140 1.0 1.2 RPM RPM HP HP Density 0.075 lb/ft³ Density 0.075 lb/ft³ 250 1.0 200 0.8 200 0.8 150 0.6 150 0.6 100 0.4 100 0.4 50 0.2 50 0.2 0 0.0 0 0.0 0 200 400 600 800 1000 1200 1400 0 400 800 1200 1600 2000 2400 2800 cfm cfm 0 500 1000 1500 2000 0 1000 2000 3000 4000 NYB-100 NYB-140 3 3 m /hr m /hr Model Motor

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3/4 hp 1/2 hp 1/3 hp 1/4 hp 785 730 685 650 625 575 545 500 475 425 1005 940 880 820 765 700 640 580 1 1/2 hp 1 hp 3/4 hp 1/2 hp 1/3 hp Performance Data Model NYB-180 & NYB-240 1.4 1.4 RPM RPM HP HP Density 0.075 lb/ft³ Density 0.075 lb/ft³ 300 300 1.2 1.2 250 1.0 250 1.0 200 200 0.8 0.8 150 0.6 150 0.6 100 0.4 100 0.4 50 0.2 50 0.2 0 0.0 0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 0 1 2 3 4 5 6 7 8 cfm cfm x 1000 0 1000 2000 3000 4000 5000

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Exhaust Fans The spun aluminum downblast centrifugal roof exhaust fan models G and GB (direct or belt drive) are an economical means of exhausting air. They utilize a backward-inclined wheel and are available in 45 different sizes. Capacities range from 50 to 44,700 cfm and up to 3.25 in. wg of static pressure. The low silhouette fabra style downblast centrifugal roof exhaust fan Series L models LD and LB (direct or belt drive) are a low