Pre-hung door specification sheet with dimensions and ratings

NYC 9/11 Public Portal Document

LEAKAGE

TOTAL CFM LEAKAGE AT ONE INCH WATER GAGE STATIC PRESSURE DIFFERENTIAL For Damper Equipped With Standard Seals

DETERMINING LEAKAGE To determine leakage at static pressure differ­ i Vti’ITfl J 1-2.{ (;! j .'M j } Ua t j -la ! ;• ! k’K j.;!a-hwt ’/•*! entials higher than one inch water gage, multi­ ■' ■■■I ■■■ ■■Hi ■■■ ■■■ ■■■■■■■■■ Ml ■■■ ■■■ ■■■ ■■■■ BHI ply leakage at one inch (determined from table) HkM McBB HUI ^^1HM HZRl H?H1 lUUl UKI IWl by correction factor for higher static pressure (determined from the Leakage Correction Fac­ tor Jable). Example; Find leakage tor a 36’ wide x 24" high damper it, . . . .. ——I at 3 inches water gage: 48 CFM x 1.7 =81.6 CFM leakage at 3 Inches water gage.

Leakage ratings are based on AMCA Standard 500 using Test Setup Apparatus Figure 5.5. LEAKAGE CORRECTION FACTOR Torque applied holding damper closed at 10 in. lbs. per sq. ft. of damper with minimum of 20 in. lbs.

1.0 1.4 1.7 2.0 2.2 2.4 2.6 2.8 3 3.2 3.3 3.5 3.6 3.7 3.9 4 4.1 4.2 4.4 4.5

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INSTALLATION

For proper operation, damper must be installed square and free from NOTE: racking. Opposed blade dampers must be operated from a power Dampers are designed for operation with blades running horizontally. blade or drive axle. Dampers to be installed with vertical blades require thrust collars be added at time of damper manufacture and at additional cost. Some standard features are not available with vertical blade dampers.

P.O. Box 129 Grandview. MO 64030 PHILIPS INDUSTRIES INC (816) 761-7476 FAX (816) 765-8955

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