Vermont Casting 1990 Masonry Chimneys, Prefabricated Chimneys, Chimney Size

If you use an existing masonry chimney, it must be inspected to ensure safe condition before the stove is installed. Your local professional chimney sweep, build- ing inspector, or fire department official will be able to inspect the chimney or provide a referral to someone who can.

The chimney must extend at least 3’ (914mm) above the highest point where it passes through a roof, and at least 2’ (610mm) higher than any portion of a building within 10’ (3m). (Fig. 3)

For proper draft and good performance, any chimney used with an Intrepid II should extend at least 16’ (5m) above the flue collar of the stove.

	0 To 10'
	2' Min. 3'	0 To 10'
	Min.
		2' Min. 3'
		Min.
Reference Point		AC617
Fig. 3	The 2’-3’-10’ Chimney Rule.

Masonry Chimneys

An inspection of the chimney must confirm that it has a lining. Do not use an unlined chimney. The chimney should have no cracks, loose mortar, other signs of deterioration, or blockage. Repair any defects before using the chimney with your stove.

Seal any unused openings in an existing masonry chim- ney with masonry to the thickness of the chimney wall, and repair the chimney liner. Openings sealed with pie plates or wallpaper are a hazard; seal them with mortar or refractory cement. In the event of a chimney fire, flames and smoke may be forced out of these unused thimbles.

The chimney should be thoroughly cleaned before use.

A newly-built masonry chimney must conform to the standards of your local building code or, in the absence of a local code, to a recognized national code. Masonry chimneys must be lined, either with code-approved ma- sonry or pre-cast refractory tiles, stainless steel pipe, or a code-approved, “poured-in-place” liner. The chimney’s clean-out door must seal tightly.

Intrepid II Woodburning Stove

Prefabricated Chimneys

A prefabricated metal chimney must be one tested and listed for use with solid-fuel burning appliances to the High Temperature (650°C) Standard ULC S-629 for Canada.

DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.

Chimney Size

An Intrepid II is approved for venting into a masonry chimney with a maximum flue size of 8” x 8” (200 x 200mm), and into a round flue size of 6” (150mm).

It may not be vented into larger chimneys without a liner to reduce the effective flue size to 6”(150mm) diam- eter. Larger chimneys must have their flues relined for proper stove performance.

Accessories to make the connection between stainless steel chimney liners and your Intrepid II are available through your local dealer.

Chimney Connector Guidelines

Chimney connector is the double-wall or single-wall pipe that connects the stove to the chimney. The chim- ney is a masonry or prefabricated structure that enclos- es the flue. Chimney connectors are used only to make the connection from the stove to the chimney.

Double-wall chimney connectors must be tested and listed for use with solid-fuel burning appliances. Sin- gle-wall chimney connectors should be made of 24 gauge or heavier steel, and should be 6” (150 mm) in diameter. Do not use galvanized connector; it cannot withstand the high temperatures that can be reached by smoke and gases, and may release toxic fumes under high heat.

If possible, do not pass the chimney connector through a combustible wall or ceiling. If passage through a com- bustible wall is unavoidable, refer to the section follow- ing on Wall Pass-Throughs. Do not pass the chimney connector through an attic, a closet, or any similar con- cealed space. The whole connector should be exposed and accessible for inspection and cleaning.

In horizontal runs of single-wall chimney connector without protective shields, maintain a clearance of at least 26” (660mm) from the ceiling. For information on reduced clearances using shields on single-wall chim- ney connector or using double-wall connectors, see the clearance chart on Page 10.

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