Stainless Steel Flex Relining System
DuraFlex SS
Installation Instructions
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED CLEARANCES (AIR SPACES) TO COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE THAT DURALINER BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. IMPORTANT: Read through all of these instructions before beginning your installation. Failure to install this product as described in these instructions will void the manufacturer’s warranty, may create a fire or other safety hazard, and may affect your homeowner’s insurance and safety listing of your appliance. Keep these instructions for future reference.
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For the most up-to-date installation instructions, see www.duravent.com CONTENTS
DuraFlex SS
Stainless Steel Flex Relining System
Application and Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Sizing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Prior to Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chimney Liner Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Basic DuraFlex SS Liner Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Tee Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Penetrating Through a Combustible Wall into a Masonry Chimney . . . . . . .9
Relining Instructions for Fireplace Inserts Venting into an Existing Masonry Chimney. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Terminations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Type B, Type L Vent Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Insulation Sleeve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Flex Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Chimeny Liner Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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APPLICATION AND LISTING
Stainless steel DuraFlex SS Chimney Relining System is listed by OMNI-Test Laboratories for relining masonry chimneys that are intended to be used for venting oil, pellet, or solid-fuel burning appliances, as well as gas appliances (category I only). DuraFlex SS is listed in the United States to the UL 1777 standard for Chimney Liners and in Canada to the ULC S635 standard for relining existing masonry chimneys. These instructions cover installation from the appliance vent connector through the wall of the masonry chimney, or through the damper, up to the termination cap.
IMPORTANT
Read all instructions carefully before starting the installation. Failure to follow these instructions may create a fire or other safety hazard, and will void the warranty. It is important to follow the appliance manufacturer’s installation instructions and to check the label on the appliance to confirm the appliance category and any restrictions or limitations. If DuraFlex SS is used for gas appliances, then the DuraFlex AL Cap Assembly, DuraCap, or High-Wind Cap must be used to maintain the proper listing of the vent.
INSTALLATION PRECAUTIONS
The DuraVent DuraFlex SS is an engineered product that has been designed and tested for use as specified above. The DuraVent warranty will be voided and serious fire, health, or other safety hazards may result from any of the following actions: • Installation of any damaged component. • Unauthorized modification of any Dura-Vent product. • Installation of any component part not
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manufactured or approved by DuraVent. • Installation other than as instructed by DuraVent and the appliance manufacturer. Consult your local building codes before beginning the installation. Contact local Building or Fire officials about restrictions and installation inspection in your area. CAUTION: Make sure you have the proper equipment for the job, including adequate safety protection for working at elevated heights. Always wear gloves and safety glasses when handling sheet metal parts.
SIZING REQUIREMENTS
Proper sizing of the relining system to the appliance is very important. For gas appliances, refer to the National Fuel Gas Code or the DuraVent Sizing Handbook for complete sizing instructions (these tables are not intended for Category II, III or IV appliances or Oil burning appliances). Failure to size the venting system properly may result in draft hood spillage, backpressure, and corrosive condensation in the relining system. If you are burning solid or liquid fuel, the venting system must be sized to the outlet of the appliance. Do not downsize the liner for wood or oil appliances without consulting the appliance manufacturer. Some pellet burning appliances may require an increase in diameter size for higher altitudes, but you should consult the appliance manufacturer for proper sizing of the liner.
PRIOR TO INSTALLATION
Before installing the DuraFlex SS Liner system, the chimney passageway should be examined to check for cracked, loose, or missing bricks, mortar, or other materials that could inhibit correct installation of the lining system. The Chimney should be cleaned and any tar glaze creosote removed. Verify that the existing masonry chimney has at least 1” clearance from exterior of the chimney to combustibles and it meets current NFPA 211 requirements as well as any local code requirements. Make sure the construction of your masonry chimney meets the following requirements for your reliner installation: •Minimum brick thickness: 3 1/2 inches •Maximum height: 65 feet •Minimum Height: 10 feet Clearances from combustible materials for single-wall connectors on Residential-Type Appliances (from NFPA 211): •Gas appliances without draft hoods 18 inches •Oil and solid-fuel appliances 18 inches •Unlisted gas appliances with draft hoods 9 inches •Oil appliances listed for use with L-Vent 9 inches •Boilers and furnaces equipped with listed gas burners and with draft hoods 9 inches •Listed gas appliances with draft hoods 6 inches •Other Cat I appliances able to use B-vent 6 inches
Note: When using a listed connector, the clearances specified on that connector may be used, unless a different clearance is specified by the Appliance manufacturer. The masonry chimney will also need to satisfy NFPA 211 requirements for clearances to the top of the chimney. For solid-fuel venting, you need to be at least 3-feet above the penetration through the roof, and at least 2-feet higher than any portion of the building within 10-feet of the chimney. For gas, oil, or pellet venting, you need to be at least 2-feet above the penetration through the roof, and 2ft higher than any portion of the building within 10-feet of the chimney (Figure 1). 2 FT MINIMUM ABOVE ANY PART OF THE ROOF WITHIN 10 FT
3 FT MINIMUM FOR SOLID FUEL APPLICANCE. 2 FT MINIMUM FOR GAS, OIL OR PELLET APPLIANCES.
Figure 1
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CHIMNEY LINER SELECTION
The DuraFlex SS Chimney Liner System consists of a continuous Flexible Liner from the top of the chimney to the appliance connection (Figure 2). This system is relatively easy to install, even in masonry chimneys that are constructed with an offset. This single-wall DuraFlex SS Liner system is intended for installation in masonry chimneys that comply with NFPA 211 requirements and local codes. If you are installing a gas-burning Category I or draft hood equipped appliance in cold climates, you may want to switch to doublewall, (air) insulated Type B gas vent near the top exposed portion of the chimney (Figure 3). At the top of the chimney, the flue gas has lost much of its heat, and becomes susceptible to corrosive condensation and poor draft. This is especially true with fan-assisted (Category I) gas appliances.
Figure 2
BASIC DURAFLEX SS LINER INSTALLATION
Figure 3 Fuel Burned
Minimum Minimum Insulation Clearance from Clearance from Required Liner to Masonry Masonry to Combustibles
Gas/LP
0”
0”
None
Pellet,Oil
1”
1”
None
Wood,Coal
1”
1”
None
Wood,Coal
0”
0”
2-ply Sleeve
Table 1
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The type of fuel you are burning, and what clearances you have available, will determine if you need to use the 2-ply Insulation Sleeve or Spacers with your liner installation. Refer to the Table 1 to determine if the Insulation Sleeve is required with the clearances you have available. If the Insulation Sleeve is required, please refer to the Insulation Sleeve Installation section. For a fireplace installation, refer to the Relining for Fireplace Inserts section. 1. Measure and record the total height and the dimensions of the top opening of the masonry chimney. This is needed to determine the proper diameter and total length of liner needed for your installation.
2. For a freestanding appliance, locate where the appliance flue connection will be made in the masonry chimney wall. Break out sufficient masonry to form a hole large enough for the Mortar Sleeve or Flex Liner to pass through easily. If a Tee application is necessary, a larger hole may be required. (See Tee Installation Section) 3. Remove Flex Liner from packaging and straighten coiled Flex Liner. If Insulation Sleeves are not used, you will need to attach Spacers to the Flex Liner to insure the liner maintains at least the 1� clearance required to the inside of the masonry (Figure 5). Place Spacers every 5 feet on the Liner. 4. Secure a rope to the Flex Puller and attach the Flex to DuraFlex SS Liner using sheet metal screws as shown in Figure 4. One person should feed the liner through the chimney, and another person should pull the liner from the bottom, using the rope to guide the liner though to the chimney bottom. The reason for using two people is that care must be taken not to tear or otherwise damage the Flex Liner. 5. After carefully feeding the Flex Liner down the chimney to the bottom, form a 90° angle and bring the Flex Liner through the hole in the chimney wall.
flex puller flex puller Rope (not included)
Figure 4 stainless flex
flex spacer
install flex spacers every 5-feet and where needed
Figure 5
6. Slide the Mortar Sleeve over the Flex Liner, until the Mortar Sleeve is flush with the wall of the masonry chimney (Figure 6). Once the Mortar Sleeve is in place, the space between the Mortar Sleeve and the masonry may be filled with grout. 7. The Flex Liner should extend at least 2 inches beyond the Mortar Sleeve. If you are
Mortar sleeve
Figure 6
7
Mortar sleeve Sheet metal screws
vent pipe Flex connector direction of exhaust flow 2 - 3 inches
Figure 7
Flex Liner
Tee body
Figure 8 flex liner
Figure 9
8
Rotate tee body to line up with opening in masonry
using rigid connector pipe to connect between the Flex Liner and the Appliance, you will need a Flex Connector. Be sure the flow arrow on the Flex Connector is in the same direction of the exhaust flow. Fit the Flex Liner into the Flex Connector and secure using a minimum of (3) sheet metal screws. Slide the other end of the Flex Connector into the connector pipe and attach using a minimum of (3) sheet metal screws (Figure 7).
TEE INSTALLATION INSTRUCTIONS
1. If a tee is required, and the masonry chimney has no offsets, remove Tee Branch and attach the body of the Tee to the Flex Liner as shown in Figure 8, and tighten the fast connect band. Attach a rope securely to the body of the Tee (wrapping rope tightly above branch area or around indented section of tee) and proceed to pull liner down through masonry chimney as described in Step 4 of the Basic DuraFlex SS Liner Installation section. 2. If the masonry has an offset, pull the Flex down as in Step 4 (Basic section) to its proper location, even with the opening in the chimney wall. Disconnect the rope (Figure 9). It may be necessary to rotate the Flex Liner and Tee to get the opening for the branch in the proper location. 3. When the Tee is in its final location, attach the Branch to the main body of the Tee using the fast connect band provided on the removable Branch. Loosen the fast connect band and position it around the Tee body, and tighten band. Be sure the branch fits around the outside of the upturned lip of the Tee body opening (Figure 10). 4. After the Tee and Branch are installed, connector pipe can be attached directly to the
Tee Branch with a minimum of three stainless steel screws. Slide the Mortar Sleeve over both the connector pipe and Branch, and fill in around the Mortar Sleeve with grout, keeping the Tee centered in the masonry chimney, and the end of the Mortar Sleeve even with the wall of the chimney.
flex liner tee body tee branch
5. Complete the run of connector pipe and attach it to the appliance.
PENETRATING THROUGH A COMBUSTIBLE WALL INTO A MASONRY CHIMNEY If your installation needs to pass through a combustible wall immediately prior to entering the masonry chimney, some steps need to be taken depending on whether the appliance is gas, oil, pellet or solid-fuel burning.
1. If you are using a gas, oil, or pellet appliance, simply use either a Gas Vent Wall Thimble (gas appliances), or a Pellet Vent Wall Thimble (oil and pellet appliances) installed to pass through the combustible wall and continue to install the Flex Liner as indicated in these instructions. Note that you need to use rigid pipe when you penetrate through the combustible wall as the Liner is only allowed within the masonry (Figure 11). 2. If you have a solid-fuel burning appliance, you will need to use a Wall Pass Thru to penetrate through the combustible wall safely and connect to the DuraFlex SS liner inside the masonry (Figure 12). You will need to determine where the penetration through the wall will be located (be sure to account for required clearance to combustibles for the connector pipe). You will also need to refer to L403 instructions included with the Wall Pass Thru itself.
strap
Figure 10 combustible wall front half of wall thimble
rigid vent pipe
mortar sleeve
flex connector
Figure 11 combustible wall
insulated flex liner
wall pass thru
flex connector
Figure 12
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3. Once the location of the penetration is determined, use a saber-saw to cut a 141/2” diameter (7-1/4” radius) opening in the combustible wall. Centered on the opening, cut a 6-1/2” or 8-1/2” opening in the masonry (see L403 for instructions). 4. Refer to the Insulation Sleeve section of these instructions to prepare the Flex Liner. Once the Liner is insulated, feed liner down chimney as indicated in the Basic Instruction section. 5. Attach a Flex Connector to the end of the Flex Liner (be sure the flow arrow is in the correct direction), and secure using a minimum of (3) sheet metal screws. Connect the other end of the Flex Connector to the Wall Pass Thru, again using a minimum of (3) sheet metal screws (Figure 12). 6. Secure the Wall Pass Thru in place as directed in L403 Instructions.
RELINING INSTRUCTIONS FOR FIREPLACE INSERTS VENTING INTO AN EXISTING MASONRY CHIMNEY
Spacers to the Flex Liner to insure the liner maintains the 1” clearance required to the inside of the masonry. Place Spacers every 5 feet on the Liner (Figure 5). 4. Secure a rope to the Flex Puller and attach the Flex Puller to the Dura Flex SS Flex Liner. One person should feed the liner through the chimney from the top, while another should pull the liner from the bottom (Figure 4). Two people are needed to be sure that the Flex Liner is not damaged or torn. 5. After the Flex Liner is pulled through the damper area, attach the Flex Connector (be sure the Flow arrow points up, the direction of the exhaust flow) to the Flex Liner and secure with at least (3) sheet metal screws. Position appliance, then insert Flex Connector into the flue outlet on top of the fireplace insert and attach with a minimum of (3) sheet metal screws directly to appliance outlet or collar, penetrating through both the band and appliance outlet (Figure 13).
Stainless steel flex liner
1. If you are using a solid-fuel appliance and you do not have the clearances required by Table 1, you will need to use Insulation Sleeves to maintain proper listing. Refer to the Insulation Sleeve Instruction section. 2. Measure and record the total height and the dimensions of the top opening of the masonry chimney. This is needed to determine the proper diameter and total length of liner needed for your installation. 3. Unpack and unroll the Flex Liner. Attach
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flex connector
fireplace
Figure 13
TERMINATIONS
1. When terminating your Flex Liner installation, insure the Flex Liner extends 4-5 inches over the top of the masonry chimney, as shown in Figure 14. Trim or bend the base of the Top Plate to fit on the masonry chimney as needed. 2. Slide the Top Plate over the Flex Liner and seal the Top Plate to the masonry chimney using a bead of non-hardening sealant around the top of the chimney and underside of Top Plate (Figure 15). 3. After sealing the Top Plate to the masonry chimney, attach the DuraFlex SS Cap Assembly (or DuraFlex AL Cap Assembly if used on a gas appliance) to the Flex Liner and tighten the fast connect band on the cap, as shown in Figure 16. Push the Liner Cap down until it rests upon the Top Plate. Tighten the fast connect band of the Top Plate to hold flex liner in place.
4 - 5 inches
flex liner
existing masonry chimney
Figure 14 top plate
sealant
existing masonry chimney
Figure 15 use duraflex ss cap. assembly for oil, pellet or wood appliances flex liner
use duraflex al cap assembly for venting gas applicances
top plate
Figure 16
11
sheet metal screws, 3 required
Flex connector
Figure 17 pellet vent cap (for oil
and pellet Vent)
gas vent or pellet vent pipe
optional high wind cap for gas vent only
(depending on appliance)
storm collar top plate Flex connector
stainless steel flex liner
Figure 18
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TYPE B GAS VENT OR TYPE L VENT TERMINATION
This installation procedure is for use with Type B gas vent or Type L (oil/pellet) vent near the top of the masonry chimney, or for extending the height of the venting system above the masonry chimney. 1. In addition to the Flex, you will need a Pellet Vent Cap (for oil or pellet vents) or a Gas Vent Termination Cap (Standard or High Wind), Storm Collar, Top Plate, Flex Connector, and rigid pipe to extend the cap as needed (Figures 17, 18). 2. Attach the Flex Connector to the Flex Liner and secure using a minimum of (3) sheet metal screws, then insert Pipe Section into the large end of the Flex Connector. The Flex Connector fits on the outside of the inner wall of the Pipe Section, and inside the outer wall of the Pipe Section. Secure the Flex Connector to the Pipe Section using at least (3) sheet metal screws, making sure to penetrate through both the outer wall of the pipe and the Flex Connector. (Figure 17). 3. After attaching a suitable double-wall Type B or L Vent Pipe Section to the Flex Liner with the Flex Connector, seal the Top Plate to the masonry chimney using non-hardening sealant. Tighten the fast connect band on the Top Plate to help hold the Pipe Section in place. Slide the appropriate Storm Collar over the Pipe Section, until the proper length of pipe extends above the chimney. Always have a minimum of 12 inches of rigid pipe below the Top Plate for stability. Attach the Storm Collar to the rigid Pipe Section with (4) 1/4-inch long sheet metal screws equally spaced at 90 degrees (do not penetrate inner liner).
The Storm Collar will rest on the Top Plate and serves as the support for the Flex Liner system. This system is listed by OMNI Test Laboratories to support up to 50 feet of Flex Liner or rigid Pipe Sections (Figure 18). 4. Seal the Storm Collar where it meets the Pipe Section using 500RTV non-hardening sealant, then twist-lock the appropriate Termination Cap to the Pipe Section. As an alternative to the standard cap, you may want to install a High-Wind Termination Cap (gas only) in areas where wind may be a concern (Figure 18, 19). 5. For improved draft, the liner may be extended in height above the top of the masonry chimney by simply adding additional Pipe Sections. If the vent is more than 3-ft above the top of the chimney, secure it with a field-fabricated brace (Figure 19).
optional high wind cap for gas vent only
pellet vent cap (for oil and pellet vent)
roof support
INSULATION SLEEVE INSTALLATION
Refer to Table 1 for requirements on clearances and Insulation Sleeves depending on fuel type. If your DuraFlex Liner installation does not have a 1� clearance from the outside of the masonry to combustibles, as well as 1� clearance from the liner to the inside of the masonry, then you will need to install the Liner with Insulation Sleeves in order to insure a proper installation, in accordance with the requirements of Table 1. If however, your installation can meet the required clearances, you will not need to use Insulation Sleeves. 1. Remove Flex Liner from packaging, straighten Flex Liner, and measure Liner as shown in the Basic Installation section. 2. Begin to slide the appropriate Insulation Sleeve over the Flex Liner. If you liner will be going through a Mortar Sleeve, leave that portion of the Liner uncovered by the sleeve. Secure the Insulation Sleeve in place with an Insulation Clamp at one end. 3. Continue adding Insulation Sleeves along the length of the Flex Liner, being sure that the previous Sleeve overlaps the next Sleeve. Secure the overlap with an Insulation Clamp (Figures 20, 21). 4. Once you have the length of Liner insulated, continue with Step 4 of the Basic Installation.
Figure 19
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FLEX EXTENSIONS Slide insulation sleeve into place over flex liner Insulation clamp at both ends of sleeve double ply insulation sleeve
Figure 20
For taller chimney installations where more than one length of Flex Liner is required, additional lengths of Flex Liner may be purchased in 5-foot or 35-foot lengths. Two lengths of flex may be connected together using the Flex Connector (Figure 22). It is very important that the Flex Connector be installed in the proper direction with the Flow arrow pointing in the same direction of the exhaust flow. The Flex Connector should always be installed with the wide end towards the top of chimney. Under no circumstances should this be reversed. The DuraFlex Flex Connector may also be used to utilize lengths of Flex Liner that are left over at the end of previous job.
DuraFlex ss liner multiple insulation sleeves wrapped around the flex liner. use insulation clamps where sleeves overlap.
direction of exhaust flow
flex coupling (make sure flow arrow is in proper direction)
sheet metal screws, 6 required
Figure 22 Figure 21
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CHIMNEY LINER MAINTENANCE
The chimney liner should be inspected by a certified chimney sweep or qualified chimney inspector prior to each heating season. When wood is burned slowly, it produces tar and other organic vapors, which combine with expelled moisture to form creosote. As a result, creosote residue accumulates on the chimney liner. When ignited, this creosote makes an extremely hot fire. If you are burning solid fuel, the chimney liner system needs to be inspected at least once every two months during the heating season, to determine if a creosote or soot buildup has occurred. If creosote or soot has accumulated, it should be removed to reduce the risk of a chimney fire. To remove creosote and soot, use a wire or poly chimney brush. The size of the brush should be the same diameter size as the liner or up to 1/8� larger. Thoroughly brush the liner to remove any buildup that may have occurred. To access the liner, remove the top portion of the cap by removing the screws on the legs. Be sure to reattach the cap after cleaning liner.
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M&G DuraVent Warranty M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products to the original purchaser, with the exception of Ventinox (lifetime), DuraBlack (five years) and all Termination Caps (five years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from substantial defects in material or manufacturing, if properly installed, maintained and used. This Warranty is non-transferable with the exception of Ventinox which is transferable from the original homeowner to the buyer of the home for a period of ten (10) years. This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney fires, acts of God, or any product that was: (1) purchased other than from an authorized DuraVent dealer, retailer or distributor; (2) modified or altered; (3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the printed materials provided with the product as determined by DuraVent. This limited lifetime warranty applies only to parts manufactured by DuraVent. DuraVent provides the following warranties for its products: One Hundred Percent (100%) of the purchase price or MSRP at time of purchase, whichever is lower, for 15 years from the date of purchase, and Fifty Percent (50%) thereafter, except for the following limitations: Ventinox liner and components in wood, oil, wood pellet, and gas installations are warranted at One Hundred Percent (100%) for the lifetime of the original homeowner; Ventinox 316 liner and components for coal burning installations which are warranted One Hundred Percent (100%) for ten years; all Termination Caps and DuraBlack® are warranted at One Hundred Percent (100%) for five years, and at Ten Percent (10%) thereafter. All warranty obligations of DuraVent shall be limited to repair or replacement of the defective product pursuant to the terms and conditions applicable to each product line. These remedies shall constitute DuraVent’s sole obligation and sole remedy under this limited warranty. This warranty provides no cash surrender value. The terms and conditions of this limited lifetime warranty may not be modified, altered or waived by any action, inaction or representation, whether oral or in writing, except upon the express, written authority of an executive officer of DuraVent. Ventinox WARRANTY CONDITIONS Liner and Component warranties contained herein are subject to the following conditions: (1) The Liner and Components must be installed according to DV’s installation instructions; (2) The Liner and Components are used only to line or reline chimneys venting residential appliances for which the liner was intended; and (3) documented annual inspection of the Liner and Components and maintenance as deemed necessary, beginning one year after the date of installation and continuing throughout the warranty period, by a Nationally Certified Chimney Sweep or VENTINOX® installer. The Liner and Components warranty is further subject to compliance with the following requirements throughout the warranty period: The chimney must have a chimney cap and chemical chimney cleaners must not be used when cleaning the Liner or Components. Plastic-bristle flue cleaning brushes are recommended. Corn, biofuels, driftwood or other wood containing salt, preservative-treated lumber, plastic and household trash or garbage, or wood pellets containing such materials must not be burned in the appliance or fireplace. In case of a chimney fire, the chimney must be inspected and approved by a certified Chimney Sweep before reuse. After each annual inspection, maintenance, and cleaning, the certified Chimney Sweep must fill out and date the appropriate section of the warranty card provided with the chimney liner. LIMITATIONS ON INTERNET SALES: Notwithstanding any other terms or conditions of this limited lifetime warranty, DuraVent provides no warranty for the following specific products if such products are both: (a) purchased from an Internet seller; and (b) not installed by a qualified professional installer: DuraTech®, DuraPlus HTC®, PelletVent Pro®, FasnSeal®, and DuraVent’s relining products including DuraLiner®, DuraFlex® 304, DuraFlex® 316, DuraFlex® Pro, DuraFlex® SW, and Ventinox®. For purposes of this warranty, a trained professional installer is defined as one of the following: licensed contractors with prior chimney installation experience, CSIA Certified Chimney Sweeps, NFI Certified Specialists, or WETT Certified Professionals. DuraVent reserves the right to inspect defective product to determine if it qualifies for replacement under the terms of this limited lifetime warranty. All warranty claims must be submitted with proof of purchase. Labor and installation costs are not covered under this warranty. To obtain warranty service contact DuraVent promptly at DuraVent Warranty Service, 902 Aldridge Rd., Vacaville CA 95688, or call 800-835-4429. WHERE LAWFUL, DuraVent DISCLAIMS ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL DuraVent BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR SPECIAL DAMAGES OR DIRECT OR INDIRECT LOSS OF ANY KIND, INCLUDING BUT NOT LIMITED TO PROPERTY DAMAGE AND PERSONAL INJURY. DuraVent’S ENTIRE LIABILITY IS LIMITED TO THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES DO NOT ALLOW LIMITATIONS ON IMPLIED WARRANTIES, OR THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE. For the most up-to-date installation instructions, see www. duravent.com REV 7.20.2010 M&G DuraVent, Inc. PO Box 1510 Vacaville CA 95696-1510 Manufactured in Vacaville CA and Albany NY
Customer Service Support 800-835-4429 707-446-4740 FAX www.duravent.com DuraFlexl is a registered trademark of the M&G DuraVent, Inc. All rights reserved. Made in the USA. M&G DuraVent is a member of M&G Group. ©2011
L253 04/2011