Vermont Casting Encore NC 1450 Chimney Connector Guidelines, Single-wallChimney Connectors

Encore 1450 Non-Catalytic Woodburning Stove

Chimney Connector Guidelines

A chimney connector is the double-wall or single-wall pipe that connects the stove to the chimney. The chim- ney itself is the masonry or prefabricated structure that encloses the flue. Chimney connectors are used only to connect the stove to the chimney, as in Figure 5.

Double-wall connectors must be tested and listed for use with solid-fuel burning appliances. Single-wall con- nectors should be made of 24 gauge or heavier steel. Do not use galvanized connector; it cannot withstand the high temperatures that can be reached by the stove’s exhaust gases, and may release toxic fumes under high heat. The connector may be 6” (152mm) or 8 “ (203mm) in diameter.

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 on Wall Pass-Throughs. Do not pass the connector through an attic, a closet or similar concealed space. The whole connector should be exposed and accessible for in- spection and cleaning.

In horizontal runs of chimney connector, maintain a dis- tance of 24” (610mm) from the ceiling. Keep it as short and direct as possible, with no more than two 90° turns. Slope horizontal runs of connector upward 1/4” per foot (6mm per meter) going from the stove toward the chim- ney. The recommended maximum length of a horizontal run is 3’ (1m), and the total length should be no longer than 8’ (2.4m). In cathedral ceiling installations, extend the prefabricated chimney downward to within 8’ (2.4) of the stove.

Wear gloves and protective eyewear when drilling, cutting or joining sections of chimney connector.

Single-wall Chimney Connectors

•Begin assembly at the flue collar of the stove. Insert the first crimped end into the stove’s flue collar, and keep each crimped end pointing toward the stove.

(Fig. 5)Using the holes in the flue collar as guides, drill 1/8” (3mm) holes in the bottom of the first sec- tion of chimney connector and secure it to the flue collar with three #10 x 1/2” sheet metal screws.

•Secure each joint between sections of chimney connector, including telescoping joints, with at least three (3) sheet metal screws. The pre-drilled holes in the top of each section of chimney connector serve as guides when you drill 1/8” (3mm) holes in the bot- tom of the next section.

•Secure the chimney connector to the chimney. In- structions for various installations follow.

•Be sure the stove and chimney connector are in- stalled at the correct distances from nearby com- bustible materials as per tested clearance. Refer to Encore Clearance Diagrams.

NOTE: Special slip pipes and thimble sleeves that form telescoping joints between sections of chimney con- nector are available to simplify installations. They often eliminate the need to cut individual connector sections.

Consult your local dealer about these special pieces.

Double-wall Chimney Connectors

Information on assembling and installing double-wall connectors is provided by the manufacturer of the double-wall pipe. Follow the manufacturer’s instructions exactly as you assemble the

connector and attach it to the stove and chimney. Using chimneys and connectors from the same manufacturer makes the assembly and installation straightforward.

NOTE: For installations us-
ing double-wall connectors,
minimum clearances must
conform to the listed clear-
ances in the clearance chart
	Fig. 5 the crimped end
on Page 15.	of the connector points
If the Encore is equipped with	toward stove.
the 8” flue collar, an oval-

to-round adapter will be needed. Double-wall oval-to- round adapters are available from some manufacturers. Your local dealer can help you select the right connec- tor.

Securing the Single-wall Connector to a

Prefabricated Chimney

Follow the installation instructions of the chimney manufacturer exactly as you install the chimney. The manufacturer of the chimney will supply the acces- sories to support the chimney, either from the roof of the house, at the ceiling of the room where the stove is installed, or from an exterior wall.

Special adapters are available from your local dealer which connect the prefabricated chimney to the chim- ney connector. The top of such adapters attach directly to the chimney or to the chimney’s ceiling support pack- age, while the bottom of the adapter is screwed to the chimney connector.

These adapters are designed so the top end will fit outside the inner wall of the chimney, and the bottom end will fit inside the first section of chimney connector. When assembled in this way, any soot or creosote fall- ing from the inner walls of the chimney will stay inside the chimney connector.

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