Prefabricated Chimneys, Chimney Size | Vermont Casting 2477CE

Prefabricated Double-Wall

Insulated Chimney

Tile Lined

Masonry

Chimney

ST241

Fig. 2 If in sound condition and approved for use, either a masonry or a prefabricated chimney may be used.

Prefabricated Chimneys

These should be an internal diameter of 150 mm (6”) and be of the twin wall insulated construction that has been approved for solid fuel use (e.g. Rite Vent ICS of ICID Lite Chimney Systems). Diameters over 200 mm (8”) are not recommended due to the large cross-sec- tion causing excessive cooling of the ﬂue gases.

A horizontal connector run should be inclined 20 mm per meter (1/4” per foot) from the stove toward the chimney. The recommended maximum length of a horizontal run is 914 mm (36”) and the total length of chimney connector should be no longer than 2.4 m (8’).

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

Chimney Size

The Model 2477CE heater should be vented into a ma- sonry chimney with a square ﬂue with nominal ﬂue size of 203 x 203 mm (8” x 8”), or a round ﬂue with nominal ﬂue size of 152 mm (6”).

Chimney liners larger than 203 x 305 mm (8” x 12”) may promote rapid cooling of smoke and reduction in draft, especially if they are located outside the home. These large chimneys 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 the stove are avail- able through your local dealer.

Guidelines for Installing the Chimney Connector

The chimney connector is the single-wall pipe, or listed and approved double-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.

Dutchwest Non-Catalytic Convection Heater

Connecting Flue Pipes

Connector pipes should meet the requirements of the building regulations. This can be achieved by the use connecting ﬂuepipes included in the following catego- ries:

a)Vitreous enamelled steel pipe complying with BS 6999: 1989 (1996);

b)Pipes made from stainless steel as descirbed in BS EN 1008-1:1995 grades 1.4401, 1.4404, 1.4432 or 1.4436 with ﬂue wall thickness of at least 1 mm;

c)Mild steel ﬂuepipes complying with BS 1449: Part 1: 1991, with a ﬂue wall thickness of at least 3 mm;

d)Cast iron ﬂuepipes complying with BS 41: 1973 (1998).

Flue Pipes with a spigot and socket joint should be ﬁtted with the socket facing upwards, to contain con- densates and moisture within the ﬂue. Joints should be made gas tight using proprietary jointing accessories, or, where appropriate, by packing joint with noncombus- tible rope and ﬁre cement.

Do not pass the chimney connector through a combus- tible wall, ﬂoor, or ceiling, through an attic or roof space, or through a closet or similar concealed space. If pas- sage through a combustible wall is unavoidable, follow the recommendations in the following section on Wall Pass-Throughs. Keep the passage as short and direct as possible, with no more than two 90° turns.

Chimney	Flue Liner
	Flue Liner
Elbow	Flue
	Thimble

Slip Pipe

Standard Connector

Flue Collar

Floor Protector

ST418

Fig. 3 Sections of a steel chimney connector of at least 24 gauge thickness are fastened together with screws to connect the stove to the chimney.

Two Types of Connector

You may use either a single-wall steel connector of the size and gauge described below, or a listed and ap- proved double-wall connector.

30003849