DuraVent DirectVent Pro – Chimney Conversion Kit

$465.81

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Kit A - 46DVA-KCA (+$0)
Kit B - 46DVA-KCB (+$0)
Kit C - 46DVA-KCC (+$0)
Product price: $465.81
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SKU: 46DVA-KCA Categories: , Brand:

DuraVent DirectVent Pro Chimney Conversion Kit: reuse a wood stove’s metal chimney for gas

The DuraVent DirectVent Pro Chimney Conversion Kit is a connection kit that lets a gas stove use an old wood stove chimney. It fits a 4 by 6 5/8 inch stove outlet. The included cap adapter goes on top, and the retro connector joins the black stove pipe at the bottom. A 4 inch aluminum flexible liner carries exhaust inside the chimney while outside air enters around it. 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. The sealed fire uses no room air.

Choose Kit A, B, or C to match your existing chimney’s brand and size. Buy the cap, flexible liner, and black stove pipe separately. This conversion is for a chimney supported at the ceiling, not one routed through a wall. Have a chimney sweep inspect it first to confirm it is sound. Your stove maker must allow this setup, and the vent must serve only that stove. Have a brick chimney? See the DuraVent DirectVent Pro Masonry Chimney Conversion Kit. The DuraVent DirectVent Pro Chimney Conversion Kit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

Details

SKU: 46DVA-KCA | 46DVA-KCB | 46DVA-KCC

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 is the DirectVent Pro Chimney Conversion Kit for?

It converts an existing through-the-ceiling wood-stove metal chimney into a direct vent for a 4 x 6-5/8 inch gas stove. The kit contains a Cap Adapter for the top of the old chimney and a Retro Connector for the bottom; a 4-inch flex liner runs between them inside the old chimney to carry the exhaust while the chimney itself supplies combustion air.

What do Kit A, Kit B and Kit C mean on the selector?

They match the Class A chimney the cap adapter seats on, per the DirectVent Pro catalog. Kit A (46DVA-KCA) fits 5 to 6 inch DuraTech and most 6 inch chimneys plus 6 to 7 inch American Metals and Metal-Fab. Kit B (46DVA-KCB) fits 6 inch DuraPlus, 7 to 8 inch DuraTech and most 7 to 8 inch brands. Kit C (46DVA-KCC) fits 7 to 8 inch DuraPlus and 8 inch American Metals, Air-Jet and Metal-Fab; full list on the page.

What else do I need to complete the conversion?

A DirectVent Pro 4 x 6-5/8 inch termination cap approved for your stove, 4-inch flex cut to the chimney length, and the black pipe and elbow from the stove to the Retro Connector; all are sold separately in the DirectVent Pro category. The old chimney must be in good condition and should be inspected first.

How does the liner connect at each end?

Following DuraVent’s L904 instructions, the flex is screwed to the Cap Adapter at the top, passed down through the existing chimney, pulled about 3 inches out of the bottom and screwed to the Retro Connector with the sheet metal screws supplied, then pushed back up so the connector seats in the old chimney; the stove’s vent pipe twist-locks onto the connector.

Is this approved for my stove?

Only if the stove manufacturer permits venting through a converted Class A chimney and lists DuraVent DirectVent Pro; the system is listed in combination with the appliance and the stove manual sets the clearances and maximum vent height. It is for direct vent natural gas or propane stoves, not for wood or pellet appliances.

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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