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3 INSTALLATION INSTRUCTIONS
The masonry fireplace is to be constructed in accordance to N.F.P.A. 211 (Latest Edition), Standards of
Chimney, Fireplaces, Vents and Solid-Fuel-Burning Appliances and Equipment. The FUSION 18 fireplace
insert is intended only for masonry fireplaces installed with a continuous chimney liner of 5 inch diameter
extending from the fireplace insert to the top of the chimney. This insert must be connected to a code-approved
masonry chimney or listed factory-built fireplace chimney with a direct flue connector into the first chimney liner
section. The chimney size should not be less than or more than three times greater than the cross-sectional
area of the flue collar. The chimney liner must conform to the Class 3 requirements of CAN/ULC-S635,
Standard for Lining Systems for Existing Masonry or Factory-Built Chimneys and Vents or CAN/ULC-S640,
Standard for Lining Systems for New Masonry Chimneys. Contact a local building inspector for information on
additional requirements and/or codes in your area.
CAUTION: Read these instructions carefully before starting the installation. Failure to follow these
instructions may result in property damage, bodily harm and even death. Modifications of the
instructions presented in this section without written authorization from SUPREME FIREPLACES INC.
will void the warranty.
Be sure that the fireplace and chimney are clean and in good
condition. Seal all cracks using stove cement. Seal permanently
any openings between the masonry of the fireplace and the
facing masonry. Remove or keep permanently open the existing
damper of the fireplace. If there is an accumulation of creosote in
the chimney or flue, it must be thoroughly cleaned. When
installing, operating and maintaining a solid fuel heater, respect
basic standards for fire safety.
WARNING: Do not remove bricks or mortar from the masonry fireplace.
Refer to Table 1, Figure 13 and Figure 14 for minimum opening dimensions of the masonry fireplace.
NOTE:
The non-combustible hearth must extend a minimum of 20” (508mm) from the front and 8” (203mm) on
each side of the masonry fireplace opening and must be a minimum of 44” long.
Table 1: Minimum Opening Dimensions
Width (Front)
28’’ (711 mm)
Width (Back)
18’’ (457 mm)
Height
21.75’’ (553 mm)
Depth
19’’ (483 mm)
Figure 13: Minimum Opening Dimensions – Front View
Figure 14: Minimum Opening Dimensions – Side View
