CaptiveAire DW Installation, Operation And Maintenance Manual
  1. Manuals
  2. Brands
  3. CaptiveAire Manuals
  4. Industrial Equipment
  5. DW
  6. Installation, operation and maintenance manual

CaptiveAire DW Installation, Operation And Maintenance Manual

Non-welded double wall grease duct/type ht chimney system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Installation, Operation, and Maintenance Manual
TWO MAJOR CAUSES OF GREASE DUCT RELATED FIRES: (1) FAILURE TO MAINTAIN
REQUIRED CLEARANCE (AIR SPACE) TO COMBUSTIBLE MATERIALS AND (2) FAILURE TO
CLEAN GREASE LADEN DUCTS. IT IS OF UTMOST IMPORTANCE THAT THIS GREASE DUCT BE
INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. DO NOT INSTALL GREASE
DUCT WITHOUT FIRST READING THESE INSTRUCTIONS VERY CAREFULLY.
EXAMINE ALL COMPONENTS FOR POSSIBLE SHIPPING DAMAGE PRIOR TO INSTALLATION.
DIFFERENT MANUFACTURERS HAVE DIFFERENT JOINT SYSTEMS AND ADHESIVES. DO NOT
MIX PIPE, FITTINGS, OR JOINING METHODS FROM DIFFERENT MANUFACTURERS.
Save these instructions. This document is the property of the owner of this equipment and is
required for future maintenance. Leave this document with the owner when installation or service
is complete.
Non-Welded Double Wall Grease Duct/Type HT Chimney Systems
FOR YOUR SAFETY
RECEIVING AND INSPECTION
A0018672
August 2019 Rev. 32

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DW and is the answer not in the manual?

Questions and answers

Related Manuals for CaptiveAire DW

Summary of Contents for CaptiveAire DW

  • Page 1 Non-Welded Double Wall Grease Duct/Type HT Chimney Systems Installation, Operation, and Maintenance Manual FOR YOUR SAFETY TWO MAJOR CAUSES OF GREASE DUCT RELATED FIRES: (1) FAILURE TO MAINTAIN REQUIRED CLEARANCE (AIR SPACE) TO COMBUSTIBLE MATERIALS AND (2) FAILURE TO CLEAN GREASE LADEN DUCTS. IT IS OF UTMOST IMPORTANCE THAT THIS GREASE DUCT BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS.

  • Page 3: Table Of Contents

    Table of Contents WARRANTY ..............................4 LISTINGS ..............................5 CLASSIFICATIONS ............................. 5 APPLICATION ............................. 6 Grease Ducts ............................6 Chimneys .............................. 7 Clearances ............................8 MECHANICAL ............................10 Joint Sealant ............................10 Grease Duct and Chimney Joint Assembly ..................11 Double Wall Adjustable Duct, Chimney and Transition Plate .............

  • Page 4: Warranty

    WARRANTY This ductwork and chimney system is warranted to be free from defects in material and workmanship, under normal use and service, for a period of 20-years from the date of shipment. This warranty shall not apply if: 1. The equipment is not installed by a qualified installer per this installation guide; this guide should be kept with the equipment once installation is complete.

  • Page 5: Listings

    LISTINGS This Grease Duct has been tested and is listed to UL1978, UL2221, CAN/ULC-S144 and testing has been extended to recognize ASTM E2336 and AC101 due to similar testing criteria. Models 2R, 3R and 3Z are used for grease duct applications when installed in accordance with these instructions and National Fire Protection Association “NFPA 96”;...

  • Page 6: Application

    APPLICATION Grease Ducts Double wall grease ducts are listed for a continuous internal temperature of 500°F and intermittent temperatures of 2000°F. Double wall grease duct is ideally suited for use in commercial cooking installations for the removal of smoke and grease laden vapors. Grease duct system size and capacity information may be obtained from the ASHRAE Handbook –...

  • Page 7: Chimneys

    Chimneys Factory Built Chimney Model 2R Type HT is listed for continuous internal temperatures of 1000°F US & 600°F Canada, intermittent temperatures of 2100°F. This system is ideally suited for commercial and industrial application for the removal of smoke and heat, and is rated for use at a maximum 60 inch water column internal pressure when used in positive pressure applications.

  • Page 8: Clearances

    DW - 2R: 3/4” clearance to combustibles from the surface of the duct outer shell; zero inch clearance from combustibles from the tip of the outer V-band. DW - 2R: 1” clearance to combustibles from the surface of the duct outer shell; zero inch clearance from combustibles from the tip of the outer V-band.
  • Page 9 Figure 1 - Grease Duct Reduced Clearance 1. Combustible Surface 2. Duct 3. Double V-band A. Reduced Clearance • 2R 8”-16” = 3/4” • 2R 18” = 1” • 3R = 3/4” Figure 2 - 2R Type HT Chimney Reduced Clearance 1.

  • Page 10: Mechanical

    MECHANICAL Joint Sealant Proper joint assemble is essential for a safe installation. Follow these instructions exactly as written Check severeness of joints upon completion of assembly. The joint sealant used to seal all joint assemblies is 3M Fire Barrier 2000+ Silicone Sealant. This sealant is a ready-to-use, gun-grade, one-component silicone elastomer that cures upon exposure to atmospheric humidity to form a flexible seal.

  • Page 11: Grease Duct And Chimney Joint Assembly

    Grease Duct and Chimney Joint Assembly All grease ducts are to be liquid tight per NFPA 96. Model 2R Type HT chimney used in positive pressure applications must be liquid tight per UL103 and UL103HT listing. When a chimney system is used in a positive pressure application, it must be fitted with an internal joint collar and sealed as shown in Figure 3 (positive pressure only).

  • Page 12: Double Wall Adjustable Duct, Chimney And Transition Plate

    Double Wall Adjustable Duct, Chimney and Transition Plate Adjustable duct sections may be used in conjunction with transition plates when they terminate at the fan. The adjustable duct section is fully welded to the transition plate, and then connected to the standard duct length using non-welded connections.
  • Page 13 Figure 4 - Adjustable Duct, Chimney and Transition Plate X -1" 1. Transition Plate 6. Adjustable Duct Section 11. Sheet Metal Screws 2. Adjustable Collar 7. Single V-band 12. Double Wall V-band 3. 3M Fire Barrier 2000 Plus 8. Outer Shell Cover 13.

  • Page 14: Double Wall Adjustable Duct, Chimney Standard Installation

    Double Wall Adjustable Duct, Chimney Standard Installation Adjustable duct lengths are used to make up variable lengths in the duct system(s). Adjustable sections should always be installed with the overlap to the inside of the standard duct section. Overlap should always be opposite the direction of airflow.
  • Page 15 Figure 6 - Collar and Adjustable Duct, Chimney Installation -1" 1. Duct Section 1 6. Adjustable Duct 11. Sheet Metal Screws 2. Adjustable Collar 7. Single V-band 12. Mating Duct Flange 3. 3M Fire Barrier 2000 Plus 8. Outer Shell Cover 13.

  • Page 16: Double Wall Offset Distance

    Double Wall Offset Distance Table 4 - Offset Distance Offset Center Line Distance 15 Degree Elbows Offset Center Line Distance 30 Degree Elbows Flange Flange Diameter Part Number HT 1 CL 1 Part Number HT 1 CL 1 Diameter Diameter Diameter 8"...

  • Page 17: Factory And Field (Bolted And Welded) Risers

    Factory and Field (Bolted and Welded) Risers There are two options for the riser, this is the connection to hood plenum. There may be welded (factory or field) or bolted. Dimensional data identifying the size and location of the riser must be provided for factory installation. The riser is fully welded to the hood plenum.
  • Page 18 Double Wall Connection to Riser 1. After the riser has been installed, see “Factory and Field (Bolted and Welded) Risers” on page 17, connect the double wall section to the riser. 2. Connect the duct/chimney section to the riser, refer to steps 1 through step 3 in “Grease Duct and Chimney Joint Assembly”...

  • Page 19: Duct Drains

    Duct Drains Drains are used to provide a point at which low points in the duct system can be drained. Condensation and low lying water left over from duct cleaning can be drained easily with the installation of a ball valve drain.

  • Page 20: Access Door (Tee Cap) Assembly

    Access Door (Tee Cap) Assembly Access doors (tee caps) are available 8” to 36”. They work in conjunction with the manifold tee as shown on “Manifold Tee” on page 19. The tee joint connection is the same as the joint assembly method, refer to “Grease Duct and Chimney Joint Assembly”...

  • Page 21: Transition Plate

    Transition Plate The transition plate is designed to connect to a roof curb. The duct section is welded to the underside of the plate. The plate is formed to provide a slope to allow grease deposits to flow back towards the duct. When connected, the plate mounts on top of the fan curb that supports the fan housing.

  • Page 22: Chimney Adapter Plate

    Chimney Adapter Plate The transition plate is designed to connect to a roof curb. The chimney section is welded to the underside of the plate. When connected, the plate mounts on top of the curb that supports the chimney cap. The plate may be positioned off center within the curb provided that the minimum distance to combustibles is maintained.

  • Page 23: Prevention Of Grease Accumulation In Horizontal Grease Duct

    Prevention of Grease Accumulation in Horizontal Grease Duct In some areas the local authority will require horizontal duct runs to be sloped. The duct referenced in this manual is listed, 1/16” per foot slope for horizontal runs less than 75 feet. For installations with horizontal runs greater than 75 feet, the duct referenced in this manual is listed, 3/16”...
  • Page 24 Figure 15 - Horizontal Support Details Unistrut - Bottom Connection Saddle Top Connection Saddle Bottom Connection 1. 1/2” Threaded Rods 8. 1/2” Hex Nuts (Grade 5) 2. Saddle Top Connection 9. 1/2” Hardened Washers 3. Saddle A. Center of Duct 4.

  • Page 25: Vertical Support & Vertical Support Spacing

    Vertical Support & Vertical Support Spacing Duct and chimney system(s) require supports along vertical runs. There are multiple vertical supports used for duct and chimney system(s). Each support assembly is designed for a specific type of installation. Review installation site before selecting supports. There are three different types of hardware supplied depending on the type of wall that the duct and chimney is being supported on.
  • Page 26 IMPORTANT: VERTICAL SUPPORTS REFERED TO IN THIS MANUAL ARE REQUIRED. SUPPORTS BY OTHERS MUST BE APPROVED BY THE MANUFACTURER AND AUTHORITY HAVING JURISDICTION (AHJ), GREASE DUCT ONLY. CHIMNEY SYSTEMS MUST USE THE SUPPORTS LISTED IN THE MANUAL, SUPPORTS BY OTHER ARE NOT ALLOWED. SUPPORT SPACING MUST BE AS STATED IN THIS MANUAL.
  • Page 27 Figure 17 - Vertical Support Details 1. Double V-band - The V-band is located above 6. Ceiling vertical support. 7. 5/16” Whiz Nuts and Bolts. Used to secure 2. Vertical Support top plate. 3. Duct System 8. 5/16”-18 x 1-1/2” Self-Drilling Screws 4.
  • Page 28 There is no limit on the angle or slope of an offset for gas or liquid fuel burning appliances, but with a solid fuel burning appliance the slope must not be greater than 30 degrees (USA) or 45 degrees (Canada) from vertical.

  • Page 29: Double Wall Vertical Support (Wood, Steel, Concrete)

    Double Wall Vertical Support (Wood, Steel, Concrete) The V-band will sit on top of the flat support plates after the wall support kit installation is complete. 1. Verify wall construction and hardware kit. • For wood wall construction, the wall must be constructed of 2” x 4” wooden studs with a maximum spacing of 24”...
  • Page 30 Figure 19 - Vertical Support (Wood, Steel) DETAIL A DETAIL B DETAIL C 30”/36” Additional Support Shown 1. Wall Substrate (Wood, Steel) 7. Side Support Plate #1 2. Hardware for Stud Installation - Wood/Steel 8. Side Support Plate #2 • Wood - 5/16” x 3-1/2” Lag Bolts and Washers 9.
  • Page 31 Figure 20 - Vertical Support (Concrete) DETAIL A DETAIL B 30”/36” Additional Support Shown DETAIL C 1. Wall Substrate (Concrete) 7. Rear Flat Support Plate 2. Wall Support Plate #1 8. 5/16”-18 Hardware, secures flat plates to the side plates. 3.

  • Page 32: Double Wall Vertical Ceiling Support

    Double Wall Vertical Ceiling Support 1. The vertical ceiling support system is used when a wall support cannot be used or installed. 2. After all-thread has been installed, install Unistrut with provided 1/2” hardware. Install floor support plates to Unistrut with 3/8” hardware. 3.

  • Page 33: Double Wall Vertical Floor Support (Wood, Concrete, Steel)

    Double Wall Vertical Floor Support (Wood, Concrete, Steel) 1. Vertical floor supports are used when the duct system is passing through a floor opening. Vertical floor support assemblies consist of two floor support plates and support bands. The support plates are used to span the floor opening, the support bands connect the floor plates to the outer shell of the double wall duct shell.
  • Page 34 Figure 22 - Chase Floor 1. Double Wall Shell 9. 5/16”-18 x 1-1/2” Self-Drilling Screws (Use minimum 3 screws per opening in the band) 2. Double Wall V-band A. Minimum Thread Penetration, refer to 3. 3/8” Hardware Table 7 4. Floor Support Fastener Band B.
  • Page 35 Figure 23 - Floor Support Wood Concrete 1. Double Wall Shell 6. 1/4”-20 Whiz Nuts and Bolts 2. Double Wall V-band 7. Floor Support Fastener Band 3. Floor Support 8. Substrate Hardware, refer to Table 7 4. Substrate A. Minimum Thread Penetration, refer to Table 7 5.
  • Page 36 Vertical Installation Roof Termination Clearance plates are used to maintain 2” clearance to combustibles for 2R HT Chimney Systems. They may be used with grease ducts (2R, 3R, 3Z) to help center grease duct when going through a floor/ceiling. A high temperature gasket is used to seal the transition plate to the exhaust fan/vent cap. The transition plate is secured to the curb using 1/4”-20 x 1-1/2”...

  • Page 37: Vertical Support Floor And Curb

    Vertical Support Floor and Curb Clearance plates are used to maintain 2” clearance to combustibles for 2R HT Chimney Systems. They may be used with grease ducts (2R, 3R, 3Z) to help center grease duct when going through a floor/ceiling. A high temperature gasket is used to seal the transition plate to the exhaust fan/vent cap.

  • Page 38: Through Penetration And Fire Stops

    DW - 2R 16” 20” 22” - 23” DW - 2R 18” 22” 24” - 25” DW - 3R / 3Z 8” 14” 16” - 17” DW - 3R / 3Z 10” 16” 18” - 19” DW - 3R / 3Z 12”...

  • Page 39: Annular Distance - Fire Stop

    Annular Distance – Fire Stop Grease ducts are to be installed eccentrically or concentrically within the fire stop system. The annular space between the grease duct and the periphery of the opening shall be a minimum of 1” to a maximum of 2”...
  • Page 40 Table 9 - Chimney Clearance Plate Square/Round Square Opening Chimney Model Inner Diameter Outer Diameter Opening Min/Max 2R Type HT Only DW - 2R Type HT 8” 12” 14” - 15” 16-1/2” DW - 2R Type HT 10” 14” 16” - 17”...

  • Page 41: Floor And Ceiling Fire Stop Installation

    Floor and Ceiling Fire Stop Installation 1. Cut an opening in the floor/ceiling that is a minimum of 2” and maximum of 3” larger than the outside diameter of the duct being installed, refer to Table 8. 2. The grease duct can be installed eccentrically or concentrically within the opening. The distance from the outside of the grease duct to the periphery of the opening cannot exceed 2”.

  • Page 42: Wall Fire Stop Installation

    Wall Fire Stop Installation 1. Cut an opening in the wall that is a minimum of 2” and maximum of 3” larger than the outside diameter of the duct being installed, refer to Table 8. 2. The grease duct can be installed eccentrically or concentrically within the opening. The distance from the outside of the grease duct to the periphery of the opening cannot exceed 2”.

  • Page 43: Grease Duct Assembly

    Grease Duct Assembly The illustrations shown provide useful information on the installation of grease duct systems. Each installation is specific to the application and the job site. If you encounter a situation not covered by this illustration, refer to the guide or consult the factory. The grease duct systems illustrated in this manual have been tested to and comply with UL 2221, Tests of Fire Resistive Grease Duct Enclosure Assemblies.
  • Page 44 The illustrations shown provide useful information on the installation of grease duct systems. Each installation is specific to the application and the job site. If you encounter a situation not covered by this illustration, refer to the guide or consult the factory. The grease duct systems illustrated in this manual have been tested to and comply with UL 2221, Tests of Fire Resistive Grease Duct Enclosure Assemblies.
  • Page 45 The illustrations shown provide useful information on the installation of grease duct systems. Each installation is specific to the application and the job site. If you encounter a situation not covered by this illustration, refer to the guide or consult the factory. The grease duct systems illustrated in this manual have been tested to and comply with UL 2221, Tests of Fire Resistive Grease Duct Enclosure Assemblies.

  • Page 46: Chimney Assembly

    Chimney Assembly The illustrations shown provide useful information on the installation of a chimney system. Each installation is specific to the application and the job site. If you encounter a situation not covered by this illustration, refer to the guide or consult the factory. The chimney systems illustrated in this manual have been tested to and comply with UL 103 Type HT, Factory-Built Chimneys for Building Heating Appliances.
  • Page 47 The illustrations shown provide useful information on the installation of a chimney system. Each installation is specific to the application and the job site. If you encounter a situation not covered by this illustration, refer to the guide or consult the factory. The chimney systems illustrated in this manual have been tested to and comply with UL 103 Type HT, Factory-Built Chimneys for Building Heating Appliances.
  • Page 48 Figure 36 - Chimney Installation Guide Details View 3 1. Base Cap 7. Vertical Support 2. 2” Clearance Plates Installed 8. Horizontal Support 3. Combustible Surface 9. 1/2” Threaded Rod (Minimum) 4. Support Fastener Band A. Vertical Support Spacing, refer to Table 6 Shell B.

  • Page 49: Methods Used To Test Duct After Assembly

    Methods Used to Test Duct After Assembly NOTE: The mentioned leakage tests are not specific to the listing(s) requirements of the system being tested. Local codes and regulations should be consulted before final inspection. In absence of local codes and regulations, refer to the latest edition of the International Mechanical Code (IMC) Chapter 5, Exhaust Systems for inspection and testing requirements.

  • Page 50: General Duct Weights

    Duct design should provide adequate support to ensure duct components are not overloaded. Weight – DW-2R The following formula can be used to approximate the weight of total length of DW-2R double wall duct. Inner Shell + Outer Shell + Insulation or (.0327*L*D) + [.0218*L*(D+4)] + [.0364*L*(D+2)].

  • Page 52: Cleaning & Maintenance Record

    CLEANING & MAINTENANCE RECORD Date Service Performed As a result of our dedication to constant improvements and quality, the MANUFACTURER reserves the right to update specifications without notice. Please refer to MANUFACTURER’S website for up to date documentation. Scan QR Code for Online Manual Factory Service Department | Phone: 1-866-784-6900 | Fax: 1-919-516-8710...

This manual is also suitable for:

Dw-2rDw-2r type htDw-3zDw-3r

Table of Contents