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SUBMITTAL RECORD
UL 1978 - Grease Duct
Professional Series
Kitchen Ventilation
DCL
Single Wall
DAS1
1-inch Air Insulated
DIS1
1-inch Insulated (AES WOOL)
DIS2
2-inch Insulated (AES WOOL)
DIS4
4-inch Insulated (AES WOOL)
DIS3Z
3-inch Insulated (AES WOOL)
SUBMITTAL RECORD
PREPARED FOR:
REFERENCE:
LOCATION:
CONTACT:
TELEPHONE:
EMAIL:
PREPARED BY:
Material Selection
FLUE (INNER WALL)
FAX:
CASING (OUTER WALL)
304
316
GALVALUME
Reference to the Installation Instructions will enable you to obtain a
safe, efficient and dependable installation of this vent system.
Do not alter or modify the components of this vent system under
any circumstances. Any modification or alteration of the vent system
or approved accessories, including but not limited to the appliance it
304
is connected to, may void the warranty, listings and approvals of this
441
system and could result in an unsafe and potentially dangerous
installation.
DV-PRO REV. 1 09-26-17
Listed to standards:
UL 1978
UL 2221 - DIS3Z Only
CAN/ULC S662
1
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Summarization of Contents
SUBMITTAL RECORD
Material Selection
Lists material options for flue (inner wall) and casing (outer wall).
SECTION A – CODE COMPLIANCE
UNDERWRITERS LABORATORIES LISTINGS
Details UL and ULC listings for grease ducts, including diameters and standards.
UL 1978 Grease Duct Listing
Specifies DuraVent models listed under UL 1978 for continuous and intermittent temperatures.
UL 2221 Listing
Explains DIS3Z classification under UL 2221 for fire resistive duct enclosure assemblies.
MIXING PARTS
Guidance on intermixing DuraVent models within a system while maintaining clearances.
SECTION B – GENERAL INFORMATION
PART NUMBERS
Explains material code designations and provides examples for part number construction.
EFFECTIVE LENGTH AND MATERIAL THICKNESS
Defines effective length and lists material thicknesses for flue and casing.
CLEARANCE TO COMBUSTIBLE NON FIRE RATED UL 1978 LISTING APPLICATION
Provides minimum clearances to combustible materials for unenclosed systems.
PENETRATION AND CLEARANCE GUIDELINES
UL 1978 LISTING APPLICATION FOR PENETRATIONS
Details applications for penetrating combustible walls, floors, and roofs under UL 1978.
ROOF AND WALL THIMBLES
Describes thimbles used for safe wall, floor, and roof penetrations.
CLEARANCE TO COMBUSTIBLE FIRE RATED UL 2221
Specifies clearances for fire-rated enclosures under UL 2221, particularly for DIS3Z.
OPENINGS FOR THROUGH FLOOR / WALL / ROOF MODELS
Provides required opening sizes for non-fire-rated and fire-rated penetrations.
FIRE RATED (2-HR) WALL PENETRATION
Details requirements for 2-hour fire-rated wall penetrations using DIS3Z.
SYSTEM SIZING AND SLOPE REQUIREMENTS
Covers system sizing, thermal expansion, corrosion protection, and duct slope.
SECTION C – TYPICAL INSTALLATION for GREASE DUCT
SAMPLE INSTALLATION DIAGRAM
Illustrates a typical installation of the grease duct system.
SEISMIC REQUIREMENTS
Addresses local code requirements for seismic bracing and stabilization of systems.
PRODUCT LABELS
Shows examples of product labels with UL listings and cautions.
SECTION D – PIPE & FITTING JOINT ASSEMBLY
SPECIAL FEATURE: ALIGNMENT SLEEVE
Highlights the alignment sleeve for easier assembly, better sealing, and added strength.
JOINT ASSEMBLY STEPS
Provides step-by-step instructions for assembling duct sections using sealant and bands.
SECTION E – COMPONENTS
DUCT LENGTHS AND ADJUSTMENTS
Describes standard, adjustable, and variable lengths for duct sections and their uses.
SEALANT USAGE AND ACCESSORIES
Details approved sealants and accessories like caps and doors for assembly and maintenance.
ELBOWS, TEES, AND FITTINGS
Covers various elbows, tees, increasers, and adapters for changing duct direction and configuration.
DRAINAGE AND NOZZLE COMPONENTS
Explains drain lengths and nozzle lengths for managing condensate and adding spray nozzles.
SECTION F – SUPPORTS
SUPPORT TYPES AND APPLICATIONS
Lists various supports (HAR, FAR, APL, AP) and their uses for guiding and anchoring ducts.
WALL AND FLOOR GUIDES/SUPPORTS
Describes heavy-duty wall, wall guide, and floor guide supports for vertical installations.
SECTION G – PENETRATION ROOF / WALL
THIMBLES AND FIRESTOP KITS
Details roof/wall thimbles and 2-hour firestop kits for safe penetrations.
SECTION H – FLASHING / STORM COLLAR
FLASHING AND STORM COLLAR
Explains flashing and storm collars for weatherproofing roof penetrations.
SECTION I – TERMINATIONS
FAN ADAPTER AND RAIN CAPS
Describes fan adapters for connecting to fans and rain caps for vertical terminations.
MITER CUT
Refers to miter cuts for horizontal exhaust with inline fans.
WARRANTY INFORMATION
LIMITED LIFETIME WARRANTY TERMS
Outlines the terms, coverage, exclusions, and limitations of the DuraVent limited lifetime warranty.
LIMITATION ON LIABILITY
Defines the seller's obligation and buyer's exclusive remedy for product defects.
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