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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
DuraVent Grease Duct System Overview
Product Series Identification
Lists DuraVent grease duct models: DCL, DAS1, DIS1, DIS2, DIS4, DIS3Z.
UL Listing and Standards Compliance
Details UL 1978, UL 2221, and ULC S662 listings for grease duct systems.
Section A: Code Compliance
Underwriters Laboratories Listings
Specifies UL 1978, UL 2221, and ULC S662 listings with diameter ranges for grease ducts.
Compliance with Industry Standards
Outlines compliance with NFPA, ICC, and IAPMO codes for commercial kitchen ventilation.
DuraVent Model Compliance Details
Explains UL 1978 temperature ratings and UL 2221 fire-resistive enclosure classification for DIS3Z.
Intermixing DuraVent Parts
Provides guidance on intermixing DuraVent models while maintaining clearances.
Section B: General Information
Part Numbers and Material Codes
Details part numbering conventions and material designations (e.g., SS, GALVALUME).
Effective Length and Material Thickness
Specifies effective length and material thickness for various duct components.
Clearance to Combustible Materials (UL 1978)
Provides tables for minimum clearances to combustible materials for UL 1978 applications.
Wall, Floor, and Roof Penetrations (UL 1978)
Clearance Detail Diagram
Illustrates clearance distances between duct and combustible materials.
Thimble Usage for Penetrations
Explains the use of Wall and Roof Thimbles for safe penetration of combustible materials.
Fire Rated Penetration Requirements
Clearance to Combustible (UL 2221)
Specifies zero inch clearance for DIS3Z in fire-rated enclosures per UL 2221.
Non-Fire Rated Opening Sizes
Lists required opening sizes for floor, wall, and roof penetrations under UL 1978.
Fire Rated Floor Penetration Diagram
Illustrates a fire-rated floor penetration with firestop sealant.
Product Specifications and Installation Guidance
Product Weight Calculation (DIS3Z)
Offers a formula to estimate the weight of DIS3Z duct based on diameter.
System Sizing and Corrosion Protection
Advises on system sizing, professional consultation, and exterior corrosion protection.
Thermal Expansion and Duct Slope
Explains thermal expansion calculations and required duct slope for proper drainage.
Section C: Typical Grease Duct Installation
Sample Installation Diagram
Provides a visual representation of a typical DuraVent grease duct system installation.
Seismic Requirements and Product Labeling
Seismic Bracing Guidelines
Discusses local code requirements for seismic bracing and system stabilization.
Product Labels and Certifications
Displays example product labels, UL certifications, and model specific information.
Support Methods and Height Limits
Support Height Limits
Details maximum vertical spacing and freestanding height limits for supports.
Horizontal Spacing Guidelines
Outlines maximum horizontal spacing for guides and supports for various models.
Section D: Pipe and Fitting Joint Assembly
Alignment Sleeve Feature
Explains the function of the alignment sleeve for centering and sealing duct joints.
Step-by-Step Joint Assembly
Guides through the process of joining duct sections using sealant and insulation strips.
Section E: Components and Lengths
Standard Lengths and Sealant Usage
Lists standard duct lengths and recommended sealants for assembly.
Adjustable and Variable Lengths
Describes components for thermal expansion and odd length adjustments.
Specialized Duct Components and Fittings
Drainage and Nozzle Components
Details vertical/horizontal drain lengths and nozzle lengths for specialized functions.
Access Doors and Tee Caps
Covers no-tool access doors and tee caps for inspection and sealing unused ports.
Elbow Configurations
Lists available elbow angles (3°, 15°, 30°, 45°, 90°) for directional changes.
Elbow Offset Calculations
Elbow Offsets for DAS1 & DIS1
Provides offset data for DAS1 and DIS1 models for 2-elbow configurations.
Elbow Offsets for DIS2
Provides offset data for DIS2 models for 2-elbow configurations.
Elbow Offsets for DCL
Provides offset data for DCL models for 2-elbow configurations.
Elbow and Tee Specifications
Elbow Offsets for DIS4
Provides offset data for DIS4 models for 2-elbow configurations.
Elbow Offsets for DIS3Z
Provides offset data for DIS3Z models for 2-elbow configurations.
90° Tees with DAM and Nozzle
Describes 90° tees, with DAM, and with nozzle for specific installation needs.
45° Tees for Flow Direction
Details 45° tees used for directional changes with low resistance flow.
Additional Duct Components and Fittings
Specialty Tees and Lateral Connections
Covers double 45° tees, Y tees, and lateral tees for appliance connection.
Drainage and Access Fittings
Explains drain tee caps and drain buckets for condensate management.
Tapered Increasers for Diameter Changes
Discusses tapered increasers for adjusting duct size, typically in vertical runs.
Section F: Supports and Adapters
Tapered Increasers and Hood Adapters
Details eccentric tapered increasers and round flanged hood adapters.
Custom Square to Round Adapters
Describes custom adapters for connecting round ducts to square collars or ducts.
Duct Support Components
Lists various supports like angle rings and anchor plates for duct system stability.
Penetration Requirements and Weatherproofing
Thimble Usage for Roof/Wall Penetrations
Outlines the use of thimbles for safe penetration of combustible materials.
2-Hour Firestop Kit for DIS3Z
Details the firestop kit for maintaining fire resistance rating during DIS3Z penetrations.
Flashing and Storm Collar for Weatherproofing
Explains flashing and storm collars for weatherizing roof penetrations.
Section I: Terminations and Weatherproofing
Adjustable Flashing and Storm Collar
Describes adjustable flashing and storm collars for roof weatherproofing.
Fan Adapters and Termination Caps
Details fan adapters for UPBLAST fans and cone rain caps.
Miter Cut for Inline Fans
Explains the use of miter cuts for horizontal exhaust systems with inline fans.
DuraVent Limited Lifetime Warranty
Warranty Coverage, Exclusions, and Limitations
Outlines the warranty period, what is covered, and common exclusions.
Liability Limitations and Claim Process
Specifies liability limits and the procedure for investigating warranty claims.
Product Warranty and Reference Information
Warranty Summary and Manual Retention
Briefly states the 15-year warranty and advises keeping the manual.
Ordering Parts and Dealer Support
Guides users on obtaining parts and contacting dealers for assistance.
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