10 FOOT RULE:

All flue gas outlet of chimney termination must extend a minimum of 3 feet in height above the highest point where it passes through the roof and must be at least 2 feet above the highest point of the roof that is within a horizontal distance of 10 feet (see figure 18).

Figure 18

FINISHING THE FIREPLACE:

Combustible materials, such as wallboard, gypsum board, sheet rock, drywall, plywood, etc may make direct contact with sides and top periphery of the fireplace face. It is important that combustible materials do not overlap the face itself. Brick, glass, tile or other non-combustible materials may overlap the front face provided they do not obstruct essential openings like louvered slots or any other opening. When overlapping with a non-combustible facing material use only non-combustible mortar or adhesive.

MANTELS:

A mantel may be installed if desired (see figure 19). Woodwork such as wood trims, mantels, or any other combustible material projecting from the front face must not be placed within 9 inches of the fireplace opening (and within 6 inches of the top louver opening). Combustible materials above 9 inches and projecting more than 1-1/2 inches from the fireplace face must not be placed less than 12 inches from the top of the opening of the fireplace (NFPA STD 211, Sec. 7- 3.3.3).

Figure 19 MINIMUM FRONT AND TOP CLEARANCES

Mantels or any other combustible materials such as wallboard, sheet rock, drywall, plywood, etc. butt up to the side of the black metal face of the fireplace. The clearances from the side of the fireplace to any combustible material and wall should fall within the limits shown in figure 20.

 

TOP VIEW OF FIREPLACE

 

FIREBOX

 

Minimum 14 inches from perpendicular side wall

Figure 20

MINIMUM SIDE CLEARANCE

*Example 1 (figure 20): The face of a mantel, bookshelf, etc. is made of combustible materials and protrudes 2-¾” from the wall the fireplace is installed in. This combustible material must be a minimum of 4” from the side of the fireplace opening.

*Example 2 (figure 20): The face of a mantel, bookshelf, etc. is made of combustible materials and protrudes 11/16” from the wall the fireplace is installed in. This combustible material can butt up against the side of the fireplace (i.e. 1” from the fireplace opening).

OPERATING GUIDELINES AND MAINTENANCE INSTRUCTIONS

GLASS DOORS

Glass doors are optional with the fireplace. When the fireplace is in operation, doors must be in the FULLY OPEN or FULLY CLOSED position only or a fire hazard may be created (see figure 21).

A fireplace equipped with glass doors operates much differently than a fireplace with an open front. A fireplace with glass doors has a limited amount of air for combustion. Excessive heat within the fireplace can result if too large a fire is built or if the combustion air gate is not completely open. The following tips should be followed to assure that both the fireplace and the glass door retain their beauty and function properly. Both flue damper and the glass doors must be fully open before starting the fire. This will provide sufficient combustion air and maintain safe temperatures in the firebox.

Figure 21

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Desa 36WIS, 36WIL, 36WL, 36WS installation instructions Foot Rule, Finishing the Fireplace, Mantels