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   General Information    

Prior to installing the stainless steel ventilation hood, the installing contractor should thoroughly review the plans and specifications of the project. The contractor should determine the exact location of the cooking hood and it should be determined if adequate room is available to install all ductwork with proper clearances from combustible material.

It is also imperative that the roof top package or curbs be installed in such a way as to minimize any offsetting in the exhaust duct system. All overhead beams or angles must be structurally strong enough to support the weight of the hood system. It is often necessary to strengthen existing structural beams, as they are not designed to carry the weight of a stainless steel hood.

NFPA 96, BOCA, the Southern Building Code and local authorities having jurisdiction call for minimum clearances between the cooking hood, exhaust ducts and building materials which are combustible. The normal requirement between the hood, duct and combustible materials is an 18" clearance. However, this clearance can be lowered based on NFPA 96 Appendix A, BOCA or UMC Codes. It is important that you check with local authorities having jurisdiction to make sure the method of installation is suitable and satisfactory with their requirements.

A minimum of four 8" long mounting angles or two 8" long and full length mounting angle, depending on hood type, are provided with each hood. Larger hoods will have additional brackets. (The submittal drawings indicate the location of these brackets to enable the contractor to make preliminary plans for hanging the hoods.) All hoods are to be hung with 1/2" all-thread rod. Refer to the following pages for recommended hanging heights.

It is extremely important that the hood be hung level, with the supply and exhaust risers on the hood located directly beneath the openings in the roof. It is advisable to finalize the location using a plumb-bob. The following pages show exploded views of the hood with a Roof Top Package unit and the hood with separate fans.


The Hood With Roof Top Package Unit


The Hood With Separate Fans