Vermont Casting 2160 manual Prefabricated Chimneys, Chimney Size, Chimney Height

Prefabricated Chimneys

A prefabricated metal chimney must be one tested and listed for use with solid-fuel burning appliances to the High-Temperature (H.T.) chimney Standard UL-103- 1985 (2100°F.) for the United States, and High Tem- perature (650°C) Standard ULC S-629 for Canada.

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

Chimney Size

A Sequoia with an 8” (203mm) flue collar is approved for venting into a masonry chimney with a nominal flue size of 8” x 8” (203 x 203mm), and into a round flue size of 8” (203mm). A Sequoia with a 6” (152mm) flue collar is approved for venting into a masonry chimney with a nominal flue size of 8” x 8” (203 x 203mm), and into a round flue size of 6” (152mm).

Whatever the flue collar size, a Sequoia may be vented into larger chimneys as well. However, chimneys with larger liners and particularly those with liners larger than 8” x 12” (203 x 305mm) may experience rapid cooling of smoke and reduction in draft, especially if they are located outside the home. These large chim- neys may need to be insulated or have their flues relined for proper stove performance.

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

Chimney Height

Altitude affects chimney performance. Refer to the chart below for suggested chimney heights at various altitudes. Chimney height should be measured form the flue collar to the top of the chimney. The recom- mended minimum chimney height is 16’ (4.9m).

	30
	25
Height	20
	15
	0	2000	4000	6000	8000	10000	12000
				Altitude

Fig. 3 Chimney height requirements with 6” chimney and/or chimney connector.

Dutchwest Sequoia

The chimney should extend at least 3’ (914mm) above the highest point where it passes through the roof, and at least 2’ (610mm) higher than any part of a building

within 10’ (3m).
	0 To 10’
	2’ Min.
	3’	0 To 10’
	Min.
		2’ Min. 3’
		Min.
	Reference
	Point	AC617
Fig. 4	The 2/3/10 rule for chimneys.

Chimney Connector Guidelines

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

Do not pass the chimney connector through a combus- tible wall or ceiling, or through an attic, a closet or any similar concealed space. If passage through a combus- tible wall is unavoidable, follow the recommendations in the following section on Wall Pass-Throughs.

WARNING: Do not use double-wall chimney con- nectors with the Sequoia unless they have been specifically tested and listed for use with this appliance. Use of double-wall chimney connectors that have not been tested and listed for use with the Sequoia may result in temperatures exceeding the limits established by the test standards ANSI/ UL-1482 or ULC S627. A potential hazard may result, including a house fire.

Use chimney connector that is 24 gauge steel or heavier, with a diameter of 8” (203mm) for an 8” (203mm) flue collare or 6” (152mm) for the 6” (152mm) flue collar.

Install the chimney connector not less than 18" (457mm) from the ceiling. Keep the passage as short and direct as possible, with no more than two 90° turns. Slope horizontal runs of connectors upward 1/4” per foot (20mm per meter) going from the stove toward the chimney. The recommended maximum length of horizontal run is 3’ (914mm), and the total length of chimney connector should be no longer than 8’(2.4m).

In cathedral ceiling installations, extend the prefabri- cated chimney downward to within 8’ (2.4 meters) of the

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