CaptiveAire DW User manual

A0018672
August 2019 Rev. 32
Non-Welded Double Wall Grease Duct/Type HT Chimney Systems
Installation, Operation, and Maintenance Manual
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.
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. DO NOT INSTALL GREASE
DUCT WITHOUT FIRST READING THESE INSTRUCTIONS VERY CAREFULLY.
RECEIVING AND INSPECTION
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.

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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 .............................................................12
Double Wall Adjustable Duct, Chimney Standard Installation .............................................................14
Double Wall Offset Distance ............................................................................................................... 16
Factory and Field (Bolted and Welded) Risers ...................................................................................17
Duct Drains .........................................................................................................................................19
Manifold Tee .......................................................................................................................................19
Access Door (Tee Cap) Assembly ......................................................................................................20
Transition Plate ...................................................................................................................................21
Chimney Adapter Plate ....................................................................................................................... 22
Prevention of Grease Accumulation in Horizontal Grease Duct ......................................................... 23
Alignment & Bracing of Grease Duct ..................................................................................................23
Double Wall Horizontal Support and Support Spacing ....................................................................... 23
Vertical Support & Vertical Support Spacing .......................................................................................25
Double Wall Vertical Support (Wood, Steel, Concrete) .......................................................................29
Double Wall Vertical Ceiling Support ..................................................................................................32
Double Wall Vertical Floor Support (Wood, Concrete, Steel) .............................................................33
Vertical Support Floor and Curb ..........................................................................................................37
Through Penetration and Fire Stops ...................................................................................................38
Annular Distance – Fire Stop ..............................................................................................................39
Annular Distance – 2R Type HT Clearance ........................................................................................39
Floor and Ceiling Fire Stop Installation ...............................................................................................41
Wall Fire Stop Installation ................................................................................................................... 42
Grease Duct Assembly .......................................................................................................................43
Chimney Assembly .............................................................................................................................46
Methods Used to Test Duct After Assembly .......................................................................................49
Method 1 – Light Test per IMC 506.3.2.5 ............................................................................... 49
Method 2 – Smoke Test .........................................................................................................49
Method 3 – Pressure Testing per SMACNA’s HVAC Air Duct Leakage ................................49
GENERAL DUCT WEIGHTS .....................................................................................................................50
CLEANING & MAINTENANCE RECORD .................................................................................................52

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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.
2. The equipment is not installed in accordance with federal, state, and local codes and regulations.
3. The equipment design or sizing is not approved per MANUFACTURER’S specifications.
4. The equipment is misused, neglected, or not maintained per the MANUFACTURER’S maintenance
instructions.
5. The equipment is exposed to elevated temperatures due to a fire originating in the building, hood, fan,
duct, chimney or kitchen appliances.
6. The equipment is not operated within its published capacity.
7. The equipment is operated, tested or stored in the presence of chlorines, solvents, refrigerant vapors,
caustic substances, halogenated compounds or other conditions which could cause condensation of
corrosive materials within or on the system.
8. The equipment is substituted or connected with parts not manufactured per Original Equipment
Manufacturer.
9. The invoice is not paid within the terms of the sales agreement.
The MANUFACTURER shall not be liable for incidental and consequential losses and damages potentially
attributable to malfunctioning equipment. Should any part of the equipment prove to be defective in
material or workmanship within the 20-year warranty period, upon examination by the MANUFACTURER,
such parts will be repaired or replaced by the MANUFACTURER at no charge. The BUYER shall pay all
labor costs incurred in connection with such repair or replacement. Equipment shall not be returned
without MANUFACTURER’S prior authorization and all returned equipment shall be shipped by the
BUYER, freight prepaid to a destination determined by the MANUFACTURER.

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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”; Standard for Ventilation Control and Fire Protection of Commercial
Cooking Operations.
This Factory Built Chimney has been tested and is listed to UL103 and UL103HT. Testing has been
extended to recognize ULC/ORD-C959-1993, unenclosed installation and is for commercial use only.
Model 2R Type HT chimney system was subjected to a 30 minute exposure at a flue gas temperature test
at 1125° C above room temperature in accordance with Canadian Standards with acceptable results
attained.
Model 2R Type HT chimney system has been tested and is listed for installations in positive pressure
applications where the chimney is subject to positive pressure rather than negative or neutral pressures.
The chimney system is rated for use at maximum 60 inch water column internal pressure when used in
Positive Pressure Applications.
This chimney system is intended for installation within commercial/industrial applications and is not
intended for use in family dwellings. When installed in accordance with these instructions and National Fire
Protection Association “NFPA 211”; Standard for Chimneys.
CLASSIFICATIONS
UL 2221: Standard for Fire Resistive Grease Duct Enclosure Assemblies. Chapter 7 of this standard
references a test labeled Internal Fire Test. Section 7.1.1 references two installation conditions, Condition
A and Condition B. Condition A represents all installation conditions except for installation within non-
ventilated combustible enclosures. Condition B represents installation within a non-ventilated combustible
enclosure.
UL 103: Standard for Factory Built Chimneys for Residential Type and Building Heating Appliances.
Model 3Z is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to
2-Hr. fire resistive shaft enclosures with a minimum zero clearance to combustibles (sizes 8” to 36”
diameter). Model 3Z is listed in accordance with the requirements for duct enclosure Condition A and B.
Model 3R is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to
2-Hr. fire resistive shaft enclosures with a reduced clearance to combustibles (sizes 8” to 24” diameter).
Model 3R is listed in accordance with the requirements for duct enclosure Condition B.
Model 2R is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to
2-Hr. fire resistive shaft enclosures with a reduced clearance to combustibles (sizes 8” to 18” diameter).
Model 2R is listed in accordance with the requirements for duct enclosure Condition B.
Model 2R Type HT is listed under UL103 (Building Heating Appliance Chimney). Insulated double wall
building heating appliance Chimney / Type HT Factory Built Chimney intended for commercial and
industrial applications in sizes 8” through 16” ID.