
28
Bell
fi res
Installation instructions
VENT INSTALLATION
CONCENTRIC FLUE SYSTEM
IMPORTANT:
• The direct vent gas appliances have been approved in combination with the
components of the concentric fl ue systems listed in this installation manual,
according to the ANSI / CSA standards for gas appliances and may therefore
be used
only
with these components. The use of a snorkel or power vent is
not
allowed.
• The components of the concentric fl ue system of M&G Duravent (Direct Vent
Pro), Selkirk (Direct Temp) and Metal-Fab (Sure-Seal) may
not
be used
together in one installation.
• Check whether the wall or roof termination kit to be used
exactly
matches one
of those listed in this installation manual.
• Due to the high temperature of the outer walls (approx. 300°F 150°C), no
fl ammable materials may be located or used in the vicinity of the fl ue system.
• Clearance to combustible materials:
• Do not insulate the concentric flue.
• For all other installation items; the venting must be installed according to the
concentric fl ue manufacturer’s installation instructions and local code
requirements. (Which allow for installation in a combustible chase as long as
a clearance to combustible requirements are met.)
Cross section
Vertical
concentric fl ue
Cross section
Horizontal
concentric fl ue