Jotul Woodstove F 400 Prefabricated Chimneys, Chimney Height, Wall Pass-Throughs, In the U.S

•Brick or modular block must be a minimum of 4” (10 cm) nominal thickness. Stone construction must be at least 12” (30 cm) thick.

•A newly-built chimney must conform to local codes, or, in their absence, must comply with national regulations.

•An existing chimney must be inspected by a professional licensed chimney sweep, fire official, or code officer to ensure that the chimney is in proper working order.

•No other appliance may be vented into the same flue.

•An airtight clean-out door should be located at the base of the chimney.

Prefabricated Chimneys

A prefabricated metal chimney must be tested and listed for use with solid fuel burning appliances. High Temperature (HT) Chimney Standard UL 103 for the U.S. and High Temperature Standard ULC S-629 for Canada.

The manufacturer’s installation instructions must be followed precisely. Always maintain the proper clearance to combustibles as established by the pipe manufacturer. This clearance is usually a minimum of 2”, although it may vary by manufacturer or for certain chimney components.

Chimney Height

The chimney must be at least 3 feet (92 cm) higher than the highest point where it passes through the roof and at least 2 feet (61 cm) higher than the highest part of the roof or structure that is within 10 feet (3.05 m) of the chimney, measured horizontally. See figure 3.

Chimneys shorter than 14 feet (4.27 m) may not provide adequate draft. Inadequate draft can result in smoke spillage when loading the stove, or when the door is open. Poor draft can also cause back puffing (ignition of gas build- up inside the firebox) and sluggish performance. The minimum height does not, in itself, guarantee proper chimney performance.

Excessive chimney height can promote over-strong draft resulting in high stove temperatures and short burn times. Excessive draft can be corrected by installing a butterfly damper. Your Jøtul dealer is an expert resource to consult regarding draft issues or other performance-related questions.

Wall Pass-Throughs

In the U.S.

The National Fire Protection Association’s publication, NFPA 211, Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances permits four methods for passing through a combustible wall. Before proceeding with any method be sure to consult with your local building officials to discuss any local code requirements.

USA/Canada

Common Method:

•See figures 4 and 5. Remove all combustible materials from the pass-through area ( around the chimney connector), a minimum 12” (30.5 cm). A 6” (15.2 cm) diameter connector will require a 31” x 31” (78.7 x 78.7 cm) square opening.

•The opening must be filled with at least 12” (30.5 cm) of brick around a fireclay liner. The liner must be ASTM C35 or equivalent, having a minimum wall thickness of 5/8” (16 mm).

•The Pass-through must be at least 18” (45.7 cm) from combustible ceiling materials.

•It will be necessary to cut wall studs, install headers, and construct a sill frame to maintain the proper dimensions and to support the weight of the brick.

•The bricks must be solid brick with a minimum of 3 ½ inches thick (nominal 4” / 102 mm).

•Refractory mortar must be used at the junction of the chimney and the pass-through liner. The pass-through liner must not penetrate the chimney liner beyond the inner surface of the chimney liner. Use extreme care when constructing the hole in the chimney liner as the tiles can shatter easily.

In Canada

The installation must conform to CAN/CSA-B365, Installation Code for Solid Fuel Burning Appliances and Equipment. Before proceeding be sure to consult your local building inspector.

Common Method:

•This method requires the removal of all combustible materials from at least 18” (45.7 cm) around the chimney connector’s proposed location. A 6”round liner requires a minimum opening 43” x 43” (109.2 x 109.2) square.

•Locate the pass-through at least 18” from combustible ceiling materials.

•The space that is cleared of combustible materials must remain empty. Sheet metal panels can be used to cover the area. However, when using a panel on both sides of the wall, each cover must be installed on noncombustible spacers at least 1” from the wall. If one panel of sheet metal is to be used it may be installed flush to the wall.

See section 5.3.1 and 5.3.2 of CAN/CSA - B365-M91. Consult your local building inspector, authorized Jøtul Dealer, NFPA 211 in the U.S. or CAN/CSA-B635 in Canada for other approved wall pass-through methods.

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