DuraVent UL 641 User Manual

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Installation Instructions

Multi-fuel venting system. UL 641, UL 1777

PelletVEnt

for Multi-Fuel

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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 PELLETVENT BE INSTALLED ONLY IN

ACCORDANCE WITH THESE INSTRUCTIONS.

NOTE:

Read through all of these instructions before beginning your installation. Failure to install as described in this instruction will void the manufacturer’s warranty, and may have an eect on your homeowner’s insurance and UL listing status. Keep these instructions for future reference. This booklet also contains instructions for installing a venting system within an existing masonry chimney, and for installations passing through a cathedral ceiling.

Dear Customer, Installer, or End User:

We welcome any comments regarding matters pertaining to our DuraVent products. We welcome any ideas, input or complaints and I’ll make sure that someone responds directly back to you. Send your emails to: president@duravent.com

If you are searching for tech support or product information, please phone us at 800-835-4429. Or email us at: techsupport@duravent.com

LISTED

MH8381

MH14420

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VENTING SYSTEMS FOR PELLET, OIL AND MULTIFUEL STOVES

For the most up-to-date installation instructions, see www.duravent.com

CONTENTS

CLEARANCES AND APPLICATIONS . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . 4

VENT LISTING, INSTALLATION NOTES . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . . 4

TOOLS AND EQUIPMENT YOU MAY NEED, PERMITS . . . . . . . . . . . . . . . . . . . . . 5

GENERAL INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION INTO A MASONRY FIREPLACE . . . . . . . . . . . . . . .. . . . . . . . . . . . 9

INSTALLATION THROUGH SIDE OF MASONRY CHIMNEY . . . . . . . . . . . . . . .10

INSTALLATION IN A CATHEDRAL CEILING . . . . . . . . . . . . . . . . . . .. . . . . . . . 13

CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

WARRANTY. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

PelletVEnt

for Multi-Fuel

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CLEARANCES AND APPLICATIONS

DuraVent’s PelletVent and PelletVent for Multi-Fuel is listed by Underwriters Laboratories as vent for listed oil-, pellet-, (multi-fuel) appliances. PelletVent is also listed as a masonry reliner, in which case the minimum clearance is 0” from vent to masonry, and 0” clearance from the masonry to nearby combustibles. Never ll any required clearance space with insulation or any other materials. Combustible materials include (but are not limited to) lumber, plywood,sheetrock, plaster and lath, furniture, curtains, electrical wiring, and building insulation of any kind. In the United States the minimum clearance to combustibles from PelletVent is 3” for oil, pellet or other biofuel applications. A major

cause of vent related res is failure to maintain required clearances (air spaces) to combustible materials. It is of the utmost Importance that double wall pellet vent be installed only in accordance with these Instructions.

For other components not listed (components not in contact with exhaust gases), use a regular PelletVent component (examples: Support Boxes, Tee Support Bracket, Flashing). Pipe Sections: 6”, 12”, 24”, 36”, 60” lengths Adjustable Length Pipe Stovetop Pipe Adapter 45 & 90 Degree Elbows Single Tee with Clean-Out Adapter Clean-Out Adapter Vertical Cap Round and Square Horizontal Caps Wall Thimble

VENT LISTING

PelletVent and PelletVent for Multi-Fuel are listed (listing numbers MH8381 & MH14420) to the American standard UL 641 Type L Low Temperature Venting Systems. PelletVent is also listed to UL 1777.

INSTALLATION NOTES

For the purpose of these instructions, PelletVent will collectively include PelletVent and PelletVent for Multi-Fuel, unless PelletVent for Multi-Fuel is specically called out. Proper planning for your PelletVent installation will result in greater safety, eciency, and convenience,saving both time and money. Use only authorized DuraVent PelletVent listed parts. Do not install damaged parts. When installing multi-fuel appliance or an appliance that can burn pellets, use PelletVent for multi-fuel parts as specied above.

1. WARNING: When passing through ceilings and walls, make sure all combustible materials and building insulation products are a minimum of 3” from the vent pipe.

2. When exiting through walls, make sure NFPA rules are followed for distance from windows and openings.

3. Do not mix and match with other products or improvised solutions.

4. Practice good workmanship. Sloppy work could jeopardize your PelletVent installation.

5. Never use a vent with an inside diameter that is smaller than the appliance ue outlet.

6. Multistory: Where PelletVent passes through the ceiling, use DuraVent Firestop/ Support assembly.

7. PelletVent placement: When deciding the location of your stove and vent, try to minimize the alteration and reframing of structural components of the building.

8. Sections of pipe are connected to each other by pushing them rmly together and twisting. Screws are not required. If however, screws are desired, use 1/4”-long sheet metal screws. Under no circumstances penetrate the inner liner with screws.

9. RTV Sealant may be required at all vent joints. Refer to Appliance manufacturer.

10. Never install single-wall pipe to freestanding pellet stoves. Single-wall pipe may be connected to a replace insert,

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provided it is inside the replace, and the replace has completely sealed surroundings.

11. Do not connect B-Vent pipe with aluminum liners to pellet appliances.

12. Inspections: Using pelletized fuel does not eliminate the need for inspection and cleaning. During the heating season, inspect monthly, and clean at least once a year.

TOOLS AND EQUIPMENT YOU MAY NEED

Eye Protection High-Temperature Waterproof (RTV) Sealant Gloves Tape Measure Screwdriver Saber or Keyhole Saw Hammer

PERMITS

Contact your local building department or re ocials regarding any needed permits, restrictions, and installation inspection requirements in your area.

GENERAL INSTALLATION INSTRUCTIONS

PelletVent and PelletVent for Multi-Fuel are listed with a minimum 3” clearance to combustibles. Refer to Table 1 for framing requirements needed for these components.

1. Follow the stove/appliance manufacturer’s instructions. A. Choose an appliance that is listed by a recognized testing laboratory.

B. Connect only one ue per appliance. C. Follow the appliance manufacturer’s

instructions and safety manual for maximum eciency and safety. Overring can damage the appliance and vent.

2. If the vent exit is on top of the stove (Figure 1): A. Place the appliance according to the manufacturer’s instructions. B. Drop a plumb bob to the center of the appliance ue outlet and mark center point on the ceiling, cut a square hole in the ceiling for the Ceiling Support Firestop Spacer. Refer

to Table 1 for the dimensions of the hole. C. Connect Pipe Adapter to stove: Attach each section of pipe by pushing male and female ends of pipe together and twisting until pipe is in locked position. D. When the pipe passes through the Ceiling Support Firestop Spacer at ceiling, tighten bolt and clamp around pipe.

E. Always maintain at least 3" clearance from combustible materials. Where the

chimney passes through additional oors and ceilings, always install a Ceiling Support Firestop Spacer. F. When the PelletVent enters the Attic, install an Attic Insulation Shield around the vent (Figures 1 & 3). This will prevent insulation and debris from collecting near the vent pipe. Use (4) wood screws to secure the base of the Attic Insulation Shield to the framed opening. Adjust the height of the Attic Insulation Shield by sliding the top cylindrical shield over the one from the base. Insure that the top of the Shield is above the level of building insulation. Secure the Shield in place with at least two (2) sheet metal screws through the side of the cylindrical shield. Attach collar around the top of the Attic Insulation Shield. G. After lining up for the hole in roof, using the same method as 2.(B), cut either a round or square hole in the roof. Always cut the hole with the proper clearance to sides of Flashing under the roong materials and nail to the roof along the upper edge. Do not nail across the lower edge. Seal all nail heads with non-hardening waterproof sealant. H. To nish, apply high-temperature waterproof sealant where the Storm Collar will meet the vent and Flashing; slide Storm Collar down until it sets on the Flashing, put the Cap on and twist to lock (Figure 2).

3. If the ue exits on back of stove and an interior installation is desired (Figure 3): A. Place the appliance according to the manufacturer’s instructions. B. Connect a Pipe Adapter to the back of the stove and attach a Tee to Pipe Adapter, align,

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VERTICAL CAP

STORM COLLAR

3 INCH MINIMUM

INSULATION SHIELD

ATTIC

PELLET

VENT PIPE

STOVE

FLASHING

CEILING SUPPORT FIRESTOP SPACER

PIPE ADAPTER

push together and twist to lock. C. Continue to assemble pipe as described in Step 2.

4. If the ue exit is on the back of stove, and an exterior vertical installation is desired Figure 4): A. Place the appliance according to manufacturer’s instructions. B. Cut a square opening in the wall in accordance with the dimensions in Table

Table 1

Vent Component Framing Dimensions

3” Ceiling Support/ Firestop Spacer

4” Ceiling Support/ Firestop Spacer

3” & 4” Cathedral

9-3/4” x 9-3/4”

10-3/4” x 10-3/4”

Ceiling Support Box

7-1/2” x 7-1/2”

3” & 4” Wall Thimble

ATTIC INSULATION

SEE TABLE 1

FOR FRAMING

REQUIREMENTS

Figure 1

1. The black portion of the Wall Thimble is to be attached to the interior wall, and the galvanized portion is to be attached to the exterior wall. The Wall Thimble adjusts to t walls from 3”-8” thick (Figure 5). C. Connect a Pipe Adapter to back of stove; attach pipe to penetrate wall so vertical section from Tee will be 3” from the exterior of the wall. Attach a Single Tee or a Double Tee with Clean-Out Adapter, and proceed up the wall. Attach a Tee Support/Wall Strap just above the tee. A Tee Support/ Wall Strap must be placed every 4-feet along the vertical run. Assemble pipe in the same manner described in Step 2 of the general instructions. If an Adjustable Length is required in the horizontal run, and the Adjustable Length must enter the Wall Thimble, the diameter of the center hole in the Wall Thimble must be enlarged by 1/8” to accommodate the Adjustable Length. D. Seal the exterior section of the Wall Thimble to the wall with non-hardening waterproof sealant. As an option, you may also seal the gap between the pipe and Wall Thimble with sealant.

5. If the ue exit is on back of the stove, and a horizontal through-the-wall installation is

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desired (Figure 6): A. Place the appliance according to manufacturer’s instructions. B. Connect the Pipe Adapter to back of stove and attach sucient pipe to penetrate Wall Thimble and extend at least 6” beyond the exterior wall. You may install the optional House Shield as shown in Figure 6. The House Shield is used to protect the exterior wall from vent discharge. Attach a Square or Round Horizontal Cap. The Round Horizontal Cap can be swiveled to be directed away from nearby objects (fence, plants, etc.), but must still be pointing in a generally downward direction. Important: Horizontal Caps must be pointed in a generally downward direction to insure rain and snow do not enter the cap, and cause potential

WARNING

WARNING: Do not install any insulation or other material inside the Wall Thimble. Doing so can create a re hazard. The Wall Thimble requires the created air clearance from the pipe in order to make a safe installation. However, building insulation may be installed around the outside of the Wall Thimble

damage to the appliance. Either vent Cap should be at least 6” from the wall. C. Follow the below listed NFPA 211 rule for distance of exit terminal from windows and openings: NFPA 211 (2003 ed.) Section 10.4 Termination:

10.4.5 (1) The exit terminal of a mechanical draft system other than a direct vent appliance (sealed combustion system appliance) shall be located in accordance with the following: (a) Not less than 3 ft (.91m) above any forced air inlet located within 10 ft. (3m). (b) Not less than 4 ft. (1.2m) below, 4 ft. (1.2m)

APPLY HIGH

TEMPER AT URE SEALAN T COMPLETELY AROUND TO P EDGE OF

STORM COL LAR

PIPE

ADAPTER

SHINGL ES OVERLAP ON TOP EDGE OF FLASHING

Figure 2

12” MIN

Figure 3

12 INCHES MINIMU M

ATTIC INSULATION SHIELD

CEILIN G SUPPOR T/ FIRESTO P SPACER

TEE WITH CLEAN OUT ADAPTER

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TEE SUP PORT BRACKE T / WALL STRAP

DOUBLE TEE WITH CLEAN OUT ADAPTER

4 FT.

Figure 4

GALVANIZED EX TERIOR

BLACK INTERI OR

Figure 5

WARNING

Do not install any insulation or other material inside the Wall Thimble.

horizontally from or 1 ft. (305mm) above any door, window or gravity air inlet into any building. (c) Not less than 2 ft. (0.61m) from an adjacent building and not less than 7 ft. (2.1m) above grade when located adjacent to public walkways.

6. If it is desired to attach to an existing 6”, 7” or 8” DuraTech, DuraPlus or DuraChimney chimney, either roof supported, or ceiling supported: (Figure 7). A. Remove any existing connector pipe, adapter or connector going into the ceiling support box.

6 INCHES MINIMU M

OPTION AL HOUSE SHIELD

SQUARE HORIZON TA L CAP

MINIMUM

6 INCH

Figure 6

B. Visually inspect with a ashlight the

condition of the interior of the chimney for cleanliness and structural integrity. All evidence of soot and creosote must be removed from the existing chimney system. If you doubt your ability to accomplish this, contact a certied chimney sweep. Do not use chemical cleaners, as these can possibly damage the inside of the chimney. Do any required maintenance on the existing chimney system at this time. C. Install a DVL/DuraBlack Chimney Adapter

- product stock numbers (6”) 8674, (7”) 8774, or (8”) 8874 - in the existing ceiling support box, as shown in Figure 7. Note that the DVL/ DuraBlack Chimney Adapter only connects to DuraVent chimney systems. D. Connect the appropriate size Chimney Adapter to the DVL/DuraBlack Chimney Adapter. E. Connect the appliance to the Chimney Adapter using a Pipe Adapter, lengths of pipe as required, and an Adjustable Length pipe. Slide the Adjustable Length down over the top pipe section, position the installation

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vertically plumb, then slip the Adjustable Length up and twist lock it to the Chimney Adapter. Once all the components are rmly seated and properly aligned, carefully drill three 1/8” diameter holes through the outer sleeve only in the center of the slots located at the bottom of the Adjustable Length pipe. Do not penetrate the inner liner. Use (3) 3/8” length sheet metal screws to secure the Adjustable Length pipe. The completed installation will look like Figure 7.

INSTALLATION INTO A MASONRY FIREPLACE

1. Have the masonry chimney inspected by

a certied chimney sweep or installer, to determine it’s structural condition.

2. Carefully read the pellet stove or insert installation instructions.

3. Measure and record the dimensions as shown in Figure 8.

4. Use dimension “A” to determine total pipe requirements. Add 12 additional inches to insure the termination is an adequate distance above the rooine.

5. The gross pipe required will be “A” dimension plus 12". Five feet of this will be Flex Pipe. The remainder will be rigid pipe. For each joint, subtract 1-1/ 2" to allow for the overlap. You may need extra pipe, or an adjustable length pipe section to achieve the correct height.

6. Assemble the rst rigid pipe section to the Flex Pipe, insuring that the “UP” arrows shown on the pipe labels are, in fact, pointing up. Push the sections together and twist to lock. Screws are not required for a rm lock, however, should it be desired to use them, use stainless steel sheet metal screws 1/4" long - DO NOT penetrate the inner liner of the pipe.

7. Repeat this process for the remainder of the pipe sections, and lower the assembly down the chimney as shown in Figure 9. Lower it below its normal position in order

EXISTI NG DURATECH, DURAPLUS , OR DURACHI MNEY SYSTEM

PELLE T

VENT

SYSTEM

PELLE T VENT CHIMNE Y ADAPTER

CHIMNE Y SUPPOR T BOX

DVL/DUR ABLACK CHIMNE Y ADAPTER

PELLE T VENT CHIMNE Y ADAPTER

Figure 7

to connect the Flex Pipe to the pipe on the appliance. It may be necessary to tie a line to the top section, to pull it back up later.

8. In making the connection at the appliance, congurations other than the one shown in Figure 10 may be made. It may be necessary to contact the manufacturer of the unit to determine exactly what may or may not be done to make the correct connection. Some typical arrangements are shown in Figures 11 and 12. A Pipe Adapter may be needed, depending on the exit size of the stove or insert collar.

9. If a Tee is necessary to make the connection, as shown in Figure 12, the Tee has a removable Clean Out Adapter on its base to enable cleaning. The Tee Support

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12 INCHES TO

END OF P IPE

Figure 8

TOP VIEW

Bracket to hold the Tee to the rear of the appliance is mandatory. If it is desired to mount the Tee Support to the rear of the stove, obtain approval from the manufacturer of the stove before drilling, tapping, or performing any other alterations to the appliance.

10. Connect the appliance to the coupling on the bottom of the Flex Pipe, by twisting to the locked position. Push the appliance into the replace to its nal resting place. Go to the top of the chimney and pull the vent system up to it’s desired height.

11. For the termination of the pellet vent, you will use a Tall Cone Flashing, and a Storm Collar. This will require 14" of pipe above the top of the masonry chimney. Pull the pipe up through the ashing to the desired height. Mark where the Storm Collar will go. Slip the Storm Collar down over the pipe, and ax it to the pipe with a 1/4”long stainless steel sheet metal screw. (Figures 13 & 14). The Storm Collar will then support the entire vent system. Install the Cap. Seal the joint at the Storm Collar, and any other joints or seams which may appear suspect. Figure 15 shows a Tall Cone Flashing modied to t a chimney where the tile liner protrudes above the masonry, as another alternate termination technique. This completes the masonry installation.

Figure 9

INSTALLATION THROUGH SIDE OF MASONRY CHIMNEY

1. Set the appliance in its nal location

and mark the center of the hole where the pipe is to penetrate the masonry chimney (Figure 16). Insure that you comply with the manufacturer’s specications in regards to clearance and distances from combustible surfaces.

2. The pellet vent system is assembled essentially the same as previously described for installation in an existing masonry chimney with the exceptions listed: A. No Flex Pipe is required, unless the

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RIGID

PELLE T VENT

PELLE T VENT CAP

TALL CONE FLASHI NG

SCREW S TORM COLLAR TO OUT ER LINER O F PIPE WITH SHEET METAL SCREWS . THIS WILL SUPPOR T SYSTEM.

NONHAR DENING SEALAN T

PELLE T VENT CAP

PELLE T VENT PI PE

STORM COLLAR

TALL CONE FLASHI NG

MASONRY ANCHOR S

PELLE T STOVE INSERT

TOP EXIT APPLIA NCE

Figure 10

Figure 11

FLEX PE LLET VENT

TRANSI TION TO FLEX PE LLET VENT

RIGID P ELLET VENT ATTACHED TO THE STOVE

FLEX PE LLET VENT

PIPE ADAPTER

STORM COLLAR

Figure 13

SHEET METAL SCREW 3 REQUI RED, DO NOT PENET RATE INNER LINER

TALL CONE FLA SHING

Figure 14

VENT PI PE

6 INCHES MINIMU M

TOP VIEW OF STORM COL LAR AND PIP E

SHEET METAL SCREWS

REAR EX IT APPLIA NCE

Figure 12

FLEX PE LLET VENT

TEE WITH CLEAN OUT

TEE SUP PORT BRACKE T

Page 12

TEE

NONHAR DENING SEALAN T

Figure 15

Figure 16

TRIM BASE TO FIT FLUE TILE

USE MASO NRY ANCHOR S TO SECURE FLASHI NG TO MASONRY

REDUC TION COLLAR O R TRIM COLLAR TEE

FILL SPACE BET WEEN PIPE AN D MASONRY WITH GROUT

masonry chimney has an oset. If an oset exists, then a section of Flex Pipe will be needed to accommodate the oset. B. A Tee is installed at the bottom end of the vertical pipe (Figure 16). C. A Reduction Collar or a Trim Collar is required to go around the pipe section that passes through the masonry to give it a nished look (Figure 16).

3. It will be necessary to break out the masonry around the location of the pipe center line mark to a diameter of at least 4" for 3" pipe, and at least 5" in diameter for 4" pipe.

4. Install the Tee on the bottom of the vertical pipe system and lower it down the chimney until the center of the branch of the Tee is level with the center of the hole in the masonry. Connect horizontal pipe section to the Tee branch.

5. Holding the pipe at the proper elevation, install the Storm Collar and Cap, as described in Step 11 for the replace installation.

6. Connect the horizontal piece of pipe which goes through the masonry to the Tee by pushing it through the hole in the masonry, and lining it up with the branch of the Tee. Then push it into the Tee, while twisting to lock it.

7. Once the horizontal pipe section is in place, the space between the pipe and the masonry may be lled with high temperature grout, as shown in Figure 17, if desired.

8. Install the Reduction Collar or Trim Collar, the 90° Elbow, and the vertical pipe section going to the appliance. An Adjustable Pipe length will probably be needed, as well as a Pipe Adapter.

9. Conduct a nal inspection of the entire job, and review the manufacturer’s operating and installation instructions once more, before ring the appliance.

Figure 17

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INSTALLATION IN A CATHEDRAL CEILING

1. Mark a line on the side of the Cathedral

Ceiling Support Box to correspond to the line of the roof pitch, as shown in Figure 18. Allow for the Support Box to protrude below the low side of the nished ceiling a minimum of 2".

2. Position the appliance at its proper location on the oor. Pay close attention to the manufacturer’s installation instructions regarding the distances from combustibles, etc. The appliance must also be positioned so the Support Box will not interfere with roof rafters or other structural framing.

3. Run a plumb line from the center of the ue exit on the stove to the ceiling. Mark the point on the ceiling where the plumb line intersects. This represents the center of the support box. Drill a small hole through the ceiling at this point, so it can be located from the top of the roof.

4. From the roof, locate and mark the outline of the Support Box.

5. Remove shingles or other roof covering as necessary to cut the rectangular hole for the Support Box. Cut the hole 1/8" larger than the dimensions of the Support Box. (Figure 19). The rectangular hole should be centered on the small hole which you drilled through the ceiling to mark the location. Again, verify that you are not cutting through rafters or framing members.

6. Run the Support Box through the roof as shown in Figure 20, and place it so that the bottom of the Support Box protrudes at least 2" below the nished ceiling. Align the Support Box vertically and horizontally with a level. Temporarily tack the Support Box in place through the inside walls and into the roof sheathing.

7. Using tin snips, cut the Support Box from the top corners down to the roof line, and fold the resulting ap over the roof sheathing (Figure 21). Before nailing it to roof, run a

Figure 18

Figure 19

Figure 20

Figure 21

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12” MINIMUM

LEVEL

TRIM

Figure 22

Figure 23

CATHEDRAL CEILIN G SUPPOR T BOX

2” BELOW FINISH ED CEILIN G

TRIM

CLAMP

bead of non-hardening sealant around the outside top edges of the Support Box so as to make a seal between the box and the roof. Clean out any combustible material or debris from inside the Support Box.

8. Place the Pipe Clamp, (which comes as a component of the Support Box) around the top of the hole in the bottom of the Support Box (Figure 23).

9. Connect the necessary amount of pipe sections to reach the stove at a point where the Cap will be at least 12" above the roof (Figure 22).

10. Run the assembled pieces of pellet vent pipe down through the Clamp of the Support Box and connect to the appliance with a Pipe Adapter. Using a level, make slight adjustments in the position of the appliance until the pipe is truly vertical. Tighten the bolts in the Clamp. Note that the overall length of the pellet vent pipe as assembled, can be no longer than 42 feet.

11. Slip the Flashing over the pipe section(s) protruding through the roof. Secure the base to the roof with roong nails as shown in Figure 24. Insure that the roong material overlaps the top edge of the Flashing (Refer to Figure 2).

USE NON HARDENING

SEALAN T

WHERE S TORM

COLLAR S ITS

ON FLAS HING

Figure 24

CLEANING AND MAINTENANCE

1. Have your system cleaned by a certied

chimney sweep if you have doubts about your ability to clean it. Use a plastic or exible steel brush. Do not use a sti brush that will scratch the stainless steel liner of your system.

2. PelletVent systems must be installed so that access is provided for inspection and cleaning.

3. The pellet vent should be inspected at least once every month during the heating season.

4. Do not use chemical cleaners. They can damage the vent pipe.

5. To increase pellet vent life, coat all

Page 15

exterior metal parts with high temperature, rustproof paint. This is highly recommended, particularly in areas near the ocean.

6. In case of a chimney re, close all appliance draft openings, shut o pellet appliance and call your Fire Department. Do not use the appliance or vent until it has been inspected for possible damage.

7. DuraVent is not responsible for ue byproducts that might discolor roofs or walls.

Fuel: Be sure to follow the recommendations of the appliance manufacturer for the type of fuel to use. Vent Runs: Condensate is more likely to form in longer vents because the exhaust temperature cools further away from the appliance. If the exhaust cools to a certain point, moisture in the exhaust condenses in the vent, which can lead to accelerated vent corrosion. Maintain hot ue gas temperatures. It is recommended that the vent run inside the building envelope or inside a chase enclosure to minimize the vent’s exposure to cold temperatures. Be sure to follow all-applicable building codes and the requirements of the vent and appliance manufacturers. Appliance Operation: Always operate your appliance in accordance with the appliance manufacturer’s recommendations. However, operating the appliance at its lowest setting has a greater chance for condensate to form in the vent due to the low exhaust temperature. In order to help reduce condensate from forming inside the vent system, operate the appliance at higher temperatures when colder weather is encountered. Higher operation settings provide for warmer ue temperatures, which help to keep moisture suspended in the ue gases. Inspection and Maintenance: Be sure to inspect the appliance and vent often to determine if there has been any corrosion or damage to the system. Be sure to keep the venting system clean, including the tee cap (if applicable).

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M&G DURAVENT LIMITED LIFETIME WARRANTY

M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used. DuraVent products are fully warranted if installed only by a professional installer. This Warranty is transferable from the original homeowner to the buyer of the home. This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney res, acts of God, or any product that was: (1) purchased other than from an authorized DuraVent dealer, retailer or distributor; (2) modied or altered; (3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the installation instructions included with the product as determined by DuraVent. Installation instructions are available online at www.duravent.com under Support/Literature and through our Customer Service Department 800-835-4429 or customerservice@ duravent.com. This limited lifetime warranty applies only to parts manufactured by DuraVent.

DuraVent provides the following warranties for its products: One Hundred Percent (100%) MSRP 15 years from the date of purchase, and Fifty Percent (50%) thereafter, except for the following limitations on: all Termination Caps and DuraBlack® are warranted at One Hundred Percent (100%) for ve years.

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 warranty. This warranty provides no cash surrender value. The terms and conditions of this warranty may not be modied, altered or waived by any action, inaction or representation, whether oral or in writing, except upon the express, written authority of an executive ocer of DuraVent.

Corn, bio-fuels, 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 replace. In case of a chimney re, the chimney must be inspected and approved by a certied Chimney Sweep before reuse. After each annual inspection, maintenance, and cleaning, the certied Chimney Sweep must ll 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 specic products if such products are not installed by a qualied professional installer: DuraTech®, DuraPlus HTC®, DuraChimney® II, PelletVent Pro®, DirectVent Pro®, FasNSeal®, FasNSeal® W2, FasNSeal® Flex, and PolyPro®, and M&G DuraVent’s relining products including DuraLiner®, DuraFlex® (SW, Pro, 316, 304), and Ventinox®. For purposes of this warranty, a trained professional installer is dened as one of the following: licensed contractors with prior chimney installation experience, CSIA Certied Chimney Sweeps, NFI Certied Specialists, or WETT Certied Professionals.

DuraVent must be notied and given the opportunity to inspect defective product prior to 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 Warranty Service, 877 Cotting Ct., 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 3.22.2012

Manufactured in Vacaville CA and Albany NY

Customer Service Support 800-835-4429 707-446-4740 FAX www.duravent.com

L502 06/2012