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The model BL is a low proximity type hood with optional rear discharge make-up air plenum (BL-BR). Hood shall have size, shape and performance specified on drawings. Construction shall be type 430 stainless steel with a #3 or #4 polish where exposed. Individual component construction shall be determined by manufacturer and ETL. Construction shall be dependent on the structural application to minimize distortion and other defects. All seams, joints and penetrations of the hood enclosure to its lower outermost perimeter that directs and captures grease-laden vapor and exhaust gases shall have a liquid-tight continuous external weld in accordance with NFPA 96. Hood shall be wall type with a minimum of four connections for hanger rods. Connectors shall have 9/16" holes pre-punched in 1 ½" x 1 ½" angle iron at the factory to allow for hanger rod connection by others. The hood shall be furnished with U.L. classified filters, supplied in size and quantity as required by ventilator. The hood manufacturer shall supply complete computer generated submittal drawings including hood sections view(s) and hood plan view(s). These drawings must be available to the engineer, architect and owner for their use in construction, operation and maintenance. Exhaust duct collar to be 4" high with 1" flange. Duct sizes, CFM and static pressure requirements shall be as shown on drawings. Static pressure requirements shall be precise and accurate; air velocity and volume information shall be accurate within 1-ft increments along the length of the ventilator. The hood shall have:
Optional rear wall plenum shall provide make-up air discharged below the cooking equipment. All seams shall be welded and have stainless steel on exposed surfaces. Unexposed surfaces shall be constructed of aluminized metal. Plenum shall be insulated to prevent condensation and provide required clearance for limited combustibles per NFPA 96 standards. Perforated diffuser plates shall be included in the design, to provide even air distribution. |
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