Hearth and Home Technologies CUMBGAP-PMH Flue Systems, Chimney Height Requirements / Draft

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Cumberland Gap Wood Stove

CHIMNEY HEIGHT REQUIREMENTS / DRAFT

To be sure that your Quadra-Fire stove burns properly, the chimney draft (static pressure) should be approximately -.04” water column (W.C.) during a low burn and -.10” W.C. during a high burn, measured 6” (152mm) above the top of the stove after one hour of operation at each burn setting. NOTE: These are guidelines only, and may vary somewhat for individual installations.

This stove was designed for and tested on a 6” (152mm) chimney, 12 ft.-14 ft. (360-420cm) high, measured from the base of the stove. The further your stack height or diameter varies from this configuration, the possibility of performance problems increases. In addition, exterior conditions such as roof line, surrounding trees, prevailing winds and nearby hills can influence stove performance. Your local dealer is the expert in your geographic area and can usually make suggestions or discover problems that will easily correct your flue draft problem, allowing your woodstove and its flue system to operate correctly and provide safe and economical heat for your home.

A masonry chimney or a listed factory-built UL103 HT Class “A” chimney must be the required height above the roof and any other nearby obstructions. The chimney must be at least 3 ft. (91cm) higher than the highest point where it passes through the roof and at least 2 ft. (61cm) higher than the highest part of the roof or structure that is within 10 ft. (305cm) of the chimney, measured horizontally. See 2-10-3

Rule, Figure 11A.

These are safety requirements and are not meant to assure proper flue draft.

We recommend using a minimum total system height of 12 ft. (360cm), measured from the flue collar to the top of the chimney (not including chimney cap).

Availability of combustion air: A source of air (oxygen) is necessary in order for combustion to take place. It is impor- tant to realize that whatever combustion air is consumed by the fire must be replaced. If you are using room air, the air is replaced via air leakage that occurs around windows and under doors, etc. However, in most newly constructed houses, mobile homes, or even existing homes that are fitted with tightly sealed doors and windows, the area from which the combustion air is taken is relatively air tight. In these cases, an outside air source must be made available to feed combustion air from outside the home into the stove. An Outside Air Kit is available for the Cumberland Gap as an option, Part 831-1780. The kit is a requirement for mobile home installations.

2-10-3 RULE

2 ft Min (61cm)

3 ft Min

(91cm)

10 ft Min

(305cm)

Figure 11A

FLUE SYSTEMS

There are two separate and different parts to a flue system: the chimney connector and the chimney itself.

A.Single wall connector or stove pipe. This must be at least 24 gauge mild steel or 26 gauge blue steel. The sections must be attached to the stove and to each other with the crimped (male) end pointing toward the stove. See Figure 11B. All joints, including the connection at the stove collar, should be secured with three sheet metal screws. Make sure to follow the minimum clear- ances to combustibles as set out on pages 6-8 of this manual. Where passage through the wall, or partition of combustible construction is desired, the installation shall conform to CAN/CSA-B365.

B.Factory-built listed chimney connector (vented). A listed connector (vented) must be used when installing this unit in a mobile home or residental home. They must conform to each other to ensure a prope fit and seal.

CRIMPED	FLUE
END	GAS
TOWARDS	DIRECTION
STOVE

Figure 11B - Chimney Connector

September 1, 2008 7006-188E Page 11