DuraVent DirectVent Pro – Masonry Chimney Conversion Kit

$561.29

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Choose a Masonry Chimney Conversion Kit *

Masonry Chimney Conversion Kit - includes Cap Adapter, 18" x 18" Flashing, Round Ceiling Support/Wall Thimble Cover, and Retro Connector - 46DVA-KMC (+$0) (+$0)
Masonry Chimney Conversion Kit - includes Cap Adapter, 18" x 18" Flashing only - 46DVA-KCT (-$344.34)
Product price: $561.29
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SKU: 46DVA-KMC Categories: , Brand:

DuraVent DirectVent Pro Masonry Chimney Conversion Kit: use an existing masonry chimney for a gas stove

The DuraVent DirectVent Pro Masonry Chimney Conversion Kit is a connection kit for a gas stove and an existing masonry chimney. It serves stoves with 4 by 6 5/8 inch venting. Exhaust travels up a 4 inch aluminum flexible liner to an adapter at the chimney top. Incoming air travels down around the liner, then through the chimney side to the lower connector where the stove pipe attaches. Have a chimney sweep inspect the chimney first to check that it is sound. DirectVent Pro is DuraVent’s pipe inside a pipe vent for direct vent gas fireplaces and stoves: exhaust goes out through the inner pipe and outside air comes in through the outer pipe.

Choose the full kit or just the cap adapter and flashing, the metal cover for the chimney top. The full kit also includes the lower connector and round black wall cover. Buy the vent cap and flexible liner separately. For wood framed walls, the stove maker may call for an extra protective sleeve or firestop. Converting a metal chimney? See the DuraVent DirectVent Pro Chimney Conversion Kit. The DuraVent DirectVent Pro Masonry Chimney Conversion Kit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

Details

SKU: 46DVA-KMC | 46DVA-KCT

Applications

DirectVent® Pro is a unitized, coaxial (concentric) venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces.

Materials and Construction

.020″ aluminum inner wall.

.018″ galvanized steel outer wall.

Painted outer walls made of laser-welded .018″ galvalume steel. Caps also available in stainless steel and copper. Outer pipe brings combustion air to the appliance. Inner pipe exhausts flue gases to the outside. Gaskets or sealants not required (unless specified by the appliance manufacturer).

Clearances

Specified by the appliance manufacturer.

Diameters

4″ x 6 5/8″ and 5″ x 8″.

Listings

DirectVent Pro, in combination with the gas appliance, has been tested and listed as a decorative gas appliance system or as a direct vent heater system by a major testing agency, such as UL, CSA, Warnock Hersey, or OMNI. Check with your appliance manufacturer for approval.

Instructions

Typical Installation

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

DuraVent Pro

More Typical Installations

DirectVent Pro installation

Installation Key 

1 Vertical Termination Cap
2 Storm Collar
3 Flashing
4 Cathedral Ceiling Support Box
5 Pipe
6 45° Elbow
7 Class A Chimney Conversion Kit
8 4″ Flex
9 90° Elbow
10 Horizontal Termination Cap
11 Snorkel Termination Cap
12 Colinear Kit
13 3″ Flex
14 Co-Axial to Co-Linear Connector
15 Masonry Chimney Conversion Kit
16 Elbow Strap

Planning Your Installation:

  1. For vertical gas stove installations, measure the height from the stove outlet to the ceiling to determine the length of black pipe required. Select a ceiling support/wall thimble cover or a cathedral ceiling support box.
  2. To determine the length of galvanized pipe required, measure the ceiling thickness and the vertical rise in an attic or second story. Firestops are required at each floor level beyond the first floor ceiling support/wall thimble cover or cathedral ceiling support box. If an offset is required to avoid obstructions, use a pair of 45° elbows. For proper support, use elbow straps with offsets. Use wall straps for long vertical runs. Attic Insulation Shield is required in attic.
  3. Measure the roof pitch. Select the proper flashing and storm collar. Determine the minimum height above the roof.
  4. For horizontal installations, check the appliance manufacturer’s instructions for minimum rise and maximum horizontal run. A snorkel termination may be used if height restrictions prevent adequate rise above the appliance. Select the appropriate Horizontal Termination Cap (see appliance manufacturer installation instructions). To protect vinyl siding, select vinyl siding standoff. Check appliance manufacturer’s instructions for wall thimble and firestop requirements.

Design Recommendations

  • The following design recommendations are general guideline to assist in the design and selection of venting components for your installation. Always follow Duravent Installation instructions enclosed with the cap or support box before installing your chimney system. Installation instructions can be viewed online at www.duravent.com, under Catalogs and Instructions. Important: Check the manufacturer’s rating plate and instruction manual to confirm that the Duravent direct vent system is approved for use on the brand name appliance you have selected.
  • The inner and outer pipe diameters should match the outlet size of the appliance.
  • Check the appliance manufacturer’s installation instructions to confirm which types of vent configurations are permitted (i.e. horizontal, vertical, chimney reline, etc.). Also, check for any venting restrictions such as maximum horizontal run, minimum and maximum vertical rise, maximum offset, etc.
  • Be fire safe! Maintain at least the minimum clearances (air-space) between the vent pipe and nearby combustibles, as specified in the appliance manufacturer’s installation instructions. Use proper support and bracing. Follow local building codes and have your venting system inspected.

Product Resources

Catalogs

Bulletins

Brochures

Sales Sheets

Educational Papers

FAQ

What does the Masonry Chimney Conversion Kit do?

It lets a 4 x 6-5/8 inch direct vent gas stove use an existing masonry chimney: the exhaust and combustion air are routed out through the side of the chimney and up a 4-inch flex liner to a cap adapter on top. The 46DVA-KMC kit has the Cap Adapter, an 18 by 18 inch flashing, a Round Ceiling Support/Wall Thimble Cover and the Retro Connector.

What is the difference between the two kit options on the page?

The full kit (46DVA-KMC) includes the Cap Adapter, flashing, Round Ceiling Support/Wall Thimble Cover and Retro Connector. The second option (46DVA-KCT) is the Cap Adapter and flashing only, for installers who already have the wall-side parts. Both leave out the DirectVent Pro termination cap and the 4-inch flex, which are sold separately.

How is the conversion installed?

Per DuraVent’s L904 instructions, the flashing is bedded on the chimney top with non-hardening sealant-adhesive, the 4-inch flex is screwed to the top adapter, fed down the flue and out through an opening cut in the masonry wall, and its lower end is screwed to the Retro Connector mounted on the masonry, which then receives the stove’s vent pipe.

Does my stove have to be approved for this?

Yes. DirectVent Pro is listed in combination with the appliance, so the stove manual must permit a masonry-chimney conversion and name DuraVent’s system; clearances come from the stove manual. The existing chimney must be sound, so have it inspected and cleaned before the liner goes in. It is for direct vent gas or propane stoves only.

What still has to be bought separately?

The 4-inch flex liner cut to the chimney height, the DirectVent Pro termination cap approved for the stove, and the black interior pipe and elbow between the stove and the Retro Connector. All are in the DirectVent Pro category. No sealant is needed on the twist-lock pipe joints unless the appliance manufacturer requires it.

Shipping / Freight / Return Info

Same-Day / 24 hour shipping

Same-Day/24 hour shipping - If we have the product in stock, we can ship same day if ordered before 12pm Monday - Friday (CST).

Freight Claims Policy

Please follow these very important steps when it comes to Freight Items that are damaged or missing
  • Open and inspect the order while the delivery driver is present. If delivery driver does not provide sufficient time to do so, please notate the delivery receipt.
  • By signing the delivery receipt without noting any damage or missing items, you confirm that your order arrived complete and in excellent condition.
  • Record any damage or missing pieces directly on the delivery receipt.
  • Do not discard damaged item(s) or any original packaging. For severe damage, write “Refused due to damage” on the delivery receipt and contact us immediately.
  • Report any damage within two business days, including delivery details and photos showing the issue
  • Damaged item(s) must be returned within 30 days. Failure to return them will result in a charge to the original payment method.

Return Merchandise Authorization Policy

Please follow these very important steps when Returning Items. Contact our team.
  • Submit your return request within 30 days of delivery.
  • You will receive an email within 1-2 business days confirming whether your return request has been approved or denied.
  • Please also note that a 20% restocking fee may apply to approved returns
  • If approved, you will receive an itemized Return Authorization, return shipping labels (if requested), and detailed instructions within 1–2 business days
  • From the date this email is received, you will have 14 days to return the product.
  • Once our distributor receives and inspects the returned item(s), your refund will be issued within 1–2 weeks
  • Items returned outside of this process or time frame are not eligible for a refund.

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