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CHASE INSTALLATIONS
Instructions for chase installations are included with the chase
style termination chosen. In a multiple chase installation, be
sure to provide adequate distance between terminations to
prevent smoke spillage from one termination to another. We
suggest that terminations be separated at least 24 inches,
center to center and stacked at vertical height difference of 18
inches (see figure 15).
*NOTE: If a decorative shroud is to be installed, contact the
manufacturer for specifications.
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 16).
MANTELS
A mantel may be installed if desired (see figure 17),
Woodwork such as wood trims, mantels, or any other
combustible material projecting from the front face must not
be placed within 12 inches (GM36) or 18 inches (GM42/50)
of the fireplace opening. Combustible materials above 12
inches (GM36) or 18 inches (GM42/50) and projecting more
than 1-1/2 inches from the fireplace must not be placed less
than 15 inches (GM36) or 21 inches (GM42/50) from the top
opening of the fireplace (NFPA STD 211, Sec. 7-3.3.3).
Figure 15 MULTIPLE CHASE INSTALLATION
Figure 16 10-FOOT RULE
CAUTION
: Do not seal openings on the rooftop flashing.
Follow the installation instructions provided with the
termination being used.
Figure 17 MANTEL CLEARANCE – GM36
Figure 14 TERMINATION
Figure 17A MANTEL CLEARANCE – GM42/50
