Hearth and Home Technologies CUMBGAP-PMH, CUMBGAP-MBK Connection to a Metal Prefabricated Chimney

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Cumberland Gap Wood Stove

CONNECTION TO A METAL PREFABRICATED CHIMNEY

When a metal prefabricated chimney is used, the manufacturer’s installation instructions must be followed precisely. It will be necessary to install the ceiling support package or wall pass through, “T” section package, firestops (when needed), insulation shield, roof flashing, chimney cap, and any other materials deemed necessary by the prefabricated chimney manuafacturers' instructions. Maintain the proper clearance to the structure as recommended by the chimney manufacturer. This clearance is usually a minimum of 2" (51mm), although it may vary by manufacturer or for certain components. Follow the chimeny manufacturers’ instructions carefully.

There are basically two methods of metal chimney installation. One method is to install the chimney inside the residence through the ceiling and the roof. Install an attic insulation shield to maintain the specified clearance to insulation. Insulation in this air space will cause a heat buildup which may ignite the ceiling joists. This method of installation requires, at minimum, a ceiling support package, an insulation shield and roof flashing. See Figure 15A.

The other method is to install an exterior chimney that runs up the outside of the residence. See Figure 15B. The components illustrated may not look exactly like the system you purchase, but they demonstrate the basic components necessary for a proper and safe installation.

The chimney must be the required height above the roof or other obstruction for safety and for proper draft operation. The require- ment is that 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 page 11)

Figure 15A		INTERIOR CHIMNEY
			Listed
	Listed Cap		Chimney	Attic
				Insulation
			Combustible
Maintain 2" (51mm)		Storm Collar		Shield
			Ceiling
Clearance				Specified
			Joists
		Flashing		Clearance
			Chimney	Ceiling
Listed Chimney			Connector	Support
			To Stove
Ceiling Support			Combustible Wall
Chimney	*
Connector
		*Refer to Clearances
	*		to Combustibles
Floor
Protector

Figure 15B		EXTERIOR CHIMNEY
			Combustible Outside Wall
		Listed	2" (51mm)
		Chimney Pipe
			Clearance
		Chimney
			Listed Chimney
		Connector
	Listed Cap
Maintain 2" (51mm)		To Stove
Clearance Through Eave			Insulated "T"
			Wall Support
		Trim Collar	Wall Spacer on
		on Inside
		Wall	Outside Wall
Flashing
Combustible	*
Ceiling		Insulated "T"
Chimney
	*
Floor	*	Combustible Wall
Protector		*Refer to Clearances to Combustibles

NOTE: ALL HORIZONTAL INSTALLATIONS REQUIRE ACCESSORY HORIZONTAL FLUE SHIELD, PART HTSHLD-7006, TO COMPLY WITH REQUIRED CLEARANCES.

NOTE: OPTIONAL FIRE SCREEN, PART SCR-7006, CAN ONLY BE USED IN FULL VERTICAL INSTALLATIONS.

IMPORTANT! FOLLOW THE CHIMNEY MANUFACTURERS’ INSTALLATION INSTRUCTIONS AND MAINTAIN CLEARANCES AS SPECIFIED ON PAGES 6-8.

In Canada, when using a factory-built chimney, make sure it is safety listed, Type UL 103 HT CLASS "A" or conforming to CAN/ULC-S629, STANDARD FOR 650°C FACTORY-BUILT CHIMNEYS.

September 1, 2008 7006-188E Page 15