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MODEL 400 WOODSTOVE

Figure 8

Masonry Thimble

5. MASONRY CHIMNEY.

Be sure a masonry chimney meets the minimum standards of the National Fire Protection Association (NFPA)

Standard 211. It must have at least a 5/8 inch/16 mm fire clay liner or a listed chimney liner system. Make sure there

are no cracks, loose mortar or other signs of deterioration and blockage. It is best to have the chimney inspected by

a professional and be sure to have the chimney cleaned before the stove is installed and operated.

The flue should be checked to determine that it is not too large for the stove. NFPA211 allows the cross-sectional

area of the flue to be no more than 3 times the cross-sectional area of the flue collar of the stove (28 x 3 = 84). It is

recommended that a chimney with a larger diameter be relined, since the oversized flue can cause poor performance

and contribute to the accumulation of creosote. (See page 16 for more information about draft.)

When connecting the stove through a combustible wall to a masonry chimney, special methods are needed. There

are several ways to make this connection, including the construction of a masonry thimble. Check with your local

building authorities or consult the National Fire Protection Association (NFPA211). Refer to Figure 8.

NOTE: Never install more than one appli-

ance to any Chimney.

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Dovre 400 Betriebsanleitung Seite 9