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DuraPlus HTC®

DuraPlus HTC

DuraVent's blanket insulation in DuraPlus HTC is made of light-weight ceramic refractory material. This insulation will not shrink or cause gaps like competitors' products made of mineral wool and other loose-fill insulations. No gaps mean no hot spots to trigger fires to exterior combustibles. Encased between two stainless steel walls, the insulation maintains a barrier that will not shift or settle. The 2” wall keeps the exterior cool, while ensuring high temperatures for optimum draft performance on the inside.

Twist-lock feature allows you to assemble DuraPlus HTC quickly and precisely. No screws or rivets required and no locking bands needed either.

The Adjustable Tee Support Bracket is reversible for installation above or below the tee, while ensuring a 2" clearance to combustibles (adjusts from 2" to 6"). DuraPlus HTC offers 15, 30, and 45 degree elbows and allows double offsets. Chimney pipe comes in lengths from 6 inches up to 4 feet.

Designed for normal, continuous operation at 1200°F (650°C) flue gas temperatures. DuraPlus HTC is subjected to rigorous and stringent requirements of the ULC S629 standard, including one hour a 1700°F (925°C), plus three thirty minute chimney fire tests at 2100°F (1150°C).

  • Specifications
  • Typical Installation
  • Literature
  • Warranty

Applications
DuraPlus HTC is a double-wall, all-fuel chimney system for use with wood stoves; fireplaces; and appliances using wood, oil, gas, or coal.

Materials and Construction
Blanket insulation encased between inner and outer walls of .020" 430 stainless steel.

Clearances
2" clearance to combustibles.

Diameters
6"-8"

Listings
Listed to UL 103HT and ULC S629 (143-P-03-2).

Typical Installations For DuraPlus HTC

Refer to our Typical Venting Installation drawings to select the appropriate component parts for your installation.

  • A DVL/DuraBlack Chimney Adapter must be used when connecting DVL or DuraBlack stovepipe to a Ceiling Support, Wall Thimble or Finishing Collar.
  • A Wall Thimble must be installed with an appropriate section of chimney pipe for all horizontal through-the-wall installations. To accommodate thicker walls use a Wall Thimble Extension.
  • All HTC Ceiling Supports now feature an integrated Attic Insulation Shield. These must be used in all installations that pass through an attic, regardless of whether the attic is insulated or not. If a chimney is fully enclosed within a chase, an attic insulation shield is not required. Note: For Multi-Story applications, an Attic Insulation Shield must be purchased separately.
  • A Firestop Radiation Shield must be used when a chimney passes through a floor or ceiling without a ceiling support.
  • The Roof Radiation Shield is only required when the chimney is enclosed in a chase within the attic space. It is not required when the chimney is unenclosed in the attic space.

More Typical Installations:

DuraPlus HTC Typical Installations

Installation Key
1DuraPlus HTC Chimney Pipe
2Elbow
3Universal Elbow Strap
4Tee w/Cap
5Wall Thimble
6Adjustable Tee Support Bracket
7DVL/DuraBlack Chimney Adapter
8Chimney Cap
9Storm Collar
10Finishing Collar
11Reduced Clearance Firestop Radiation Shield
12Square Ceiling Support Box
13Universal Roof Support
14Trim Collar for Roof Support (not shown)
15Roof Flashing
16Roof Radiation Shield
17DVL or DuraBlack Stovepipe
18Stovetop Adapter
19DVL or DuraBlack Elbow

Planning Your Installation:

Planning Your Installation

The following recommendations are a general guideline to assist in the layout and selection of the chimney components needed for your installation. Always follow DuraVent Installation instructions before installing your chimney system (enclosed with the cap or support box). Installation instructions can be viewed online at www.duravent.com under catalogs and instructions.

  • The diameter of the chimney should match the outlet size of the appliance. An improperly sized chimney results in poor draft and excessive creosote formation.
  • Measure the diameter of the appliance flue outlet. Select the chimney and either DVL or DuraBlack connector stovepipe with the same size diameter as the appliance flue outlet. For fireplace installations, refer to the sizing chart in the back of this catalog.
  • Determine if the installation is a through-the-roof installation or a through-the-wall installation. A through-the-wall installation will require additional components (Wall Thimble, Tee/Cap, Tee Support, and Wall Straps).
  • Install the chimney in the interior of the structure whenever possible. A cold exterior chimney will produce less draft and will generate more creosote.
  • If possible avoid offsets that serve to restrict the natural draft. A straight vertical installation is more efficient and less likely to develop creosote. If an offset is required to avoid rafters or other obstructions, measure the horizontal distance required and the vertical height available. 15°, 30° and 45° elbows are available. (Note: 45° elbows are only allowed in Canada. The maximum angle allowed in the U.S. is 30°.) A maximum of two offsets in a single installation are permitted. Refer to the offset table in the back of the section of this catalog. At least one Elbow Strap is required for each offset. Elbow Straps ensure adequate support.
  • Determine the minimum chimney height above the roof line. Building codes require a minimum of 3' above the roof penetration and at least 2’ higher than any portion of a building within 10'. The termination cap is installed above that point. If chimney is more than 4' above the roof penetration an Extended Roof Bracket is required.
  • Measure the roof pitch. For example, a 6/12 pitch has a vertical rise of 6" over a horizontal distance of 12". Select the appropriate flashing.
  • Determine the total length of chimney and stovepipe required for the installation. To calculate the installed per length of 6"-8" DuraPlus HTC chimney pipe, subtract 1 1/2” per joint. Subtract 1 ¼& per joint of DuraBlack stovepipe. Subtract 1 ½" per joint of DVL stovepipe. Minimum chimney height, at sea level of straight vertical chimney, is 10' to 15' above the appliance outlet. Higher elevations, or the use of elbows or a tee, will require approximately 30% to 60% more height to provide for an adequate draft.
  • Be fire safe. Maintain at least 2" clearance to combustibles. Follow local building codes and have your chimney inspected by a certified professional.

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 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 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 five 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 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.

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 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 not installed by a qualified 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 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 must be notified 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.

M&G DuraVent Limited Lifetime Warranty (PDF, 146KB )