Page 102 - Gaylor Blue Book

DUCT SUMP
MODEL GDS SERIES
GENERAL SPECIFICATION
GDS Duct Sump
ITEM NO.
Furnish Model GDS - ______ x ______ x 24"L duct sump as manufactured by Gaylord Industries, Tualatin, Oregon. The sump shall be constructed of 16 gauge stainless steel and shall include 1" flanges at the inlet and out- let collars for welding to the duct system. All corners and seams shall be continuously welded. The duct sump shall include a stainless steel spray manifold with brass spray nozzles, a 1-1/2" drain with pre-flush line. The sump shall also include an access panel, with 1500°F gasketing, secured by weld studs with wing nuts for easy removal without tools. If the sump is larger than 36" wide, there shall be an access panel on each side. The access panel shall meet all requirements of NFPA-96. The sump shall be interconnected with the water-wash ventilator control cabinet and wash simultaneously with the ventilator. (Note: If the system does not include a water-wash ventilator, a control cabinet must be specified. Refer to “GPC” Series Control Cabinet specification sheet for details.) Duct sump shall be approved by the City of Los Angeles, Department of Building & Safety,MechanicalTestingLaboratories(ResearchReportNumberRR7657).
APPLICATION
The Gaylord Duct Sump is designed to be installed at the low point(s) of long horizontal duct runs to collect and drain off moisture, liquefied grease, etc. The International Mechanical Code (IMC) specifies that ducts must slope not less than 2% towards a hood or a grease reservoir (duct sump) and that duct runs over 75 ft. must slope not less than 8.3%. The installation of one or more duct sumps allows a 2% slope on duct runs exceeding 75 ft. by zig zagging the duct up and down as illustrated on the back of this specification sheet.
ESTABLISHING MODEL NUMBERS
The model number is determined by the size of the sump. Specify the model number as follows:
GDS - ______W_ x ______H_ x 24" L Width Height Length
TYPICAL DUCT SUMP ARRANGEMENT
GAYLORD INDUSTRIES
10900 SW AVERY STREET • TUALATIN, OREGON 97062 U.S.A.
PHONE: 800-547-9696 • FAX: 503-692-6048 • email: info@gaylordventilation.com