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VENTING
INSTALLATION
Continued
CHIMNEYS
• Complete familiarity with chimney con-
dition, height, size, clearance to combus-
tibles and other factors is essential.
NOTICE: Consult the authority
having jurisdiction in your area
regarding masonry chimney vent-
ing applications.
NOTICE: A complete chimney
inspection by a qualified person
should be performed.
• Appliances using B-vent connectors to
vent into a masonry or factory-built
chimney should not exceed 1
length for every inch of connector diam-
eter (3" vent connector has a maximum
1
4
/
foot length; 5" connector has maxi-
2
1
mum 7
/
foot length).
2
• Oversized chimneys should be relined
with appropriate listed relining systems.
• Cleanout access may be required.
Figure 26 - Straight Installation into
Masonry Chimney
106828
RELINING SYSTEMS
• Suitability and approval of relining ma-
terials should be determined.
• Condition, size, height, and termina-
tion of the chimney to be relined must
be determined.
• No substitution of components should
be made.
• Joints and connectors should be made
according to manufacturer's instructions.
NOTICE: Consult the authority
having jurisdiction in your area
regarding listed chimney liner
venting applications.
WARNING: Operation of im-
properly installed and maintained
venting system could result in
serious injury, property damage,
or loss of life.
1
/
feet in
2
Figure 27 - Typical Straight Installation
with Listed Chimney Liner
OWNER'S MANUAL
HIGH ALTITUDE
INSTALLATION
Your Vanguard B-vent burner system has
been AGA tested and approved for eleva-
tions from 0-2000 feet and CGA certified for
elevations from 0-4500 feet.
When installing this burner system at an
elevation above 2000 feet (in the USA), you
may need to decrease the input rating by
changing the existing burner orifice to a
smaller size. Reduce input 4% for each 1000
feet above sea level. Check with your local
gas company for proper orifice size identi-
fication and proper orifice for your location.
When installing this stove and burner sys-
tem at an elevation above 4500 feet (in
Canada), check with local authorities.
For assistance with any high altitude instal-
lation contact DESA International's Tech-
nical Service Department at 1-800-DESA-
LOG (1-800-337-2564).
For more information, visit www.desatech.com
11
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