Owner's manual

4
APPLICATION
M&G DuraVent's FasNSeal® Flex is a single
strip double layer super-ferritic stainless
steel for use with natural gas or propane
Categories II, III, and IV appliances or
Canada's Type BH Gas Vent Systems, having
a maximum rated operating temperature
of 480F and a maximum positive pressure
of 6" water column. FasNSeal Flex is the
only exible chimney liner listed to UL 1738
standard. DuraFlex® SW is a single, smooth
wall exible relining system for masonry
chimney. Use with gas, wood pellet, oil or
wood appliances. Applications include:
replace inserts, furnaces, boilers and water
heaters. DuraFlex SW is listed to UL 1777 and
ULC S635. Ventinox® is a single-wall flexible
liner used for upgrading or restoring masonry
chimneys that vent Category I natural gas,
propane or oil appliances, wood or pellet
stoves, fireplaces and fireplace insert.
CLEARANCES
DuraFlex SW exible lining system is listed
at 0" clearance for gas, oil, and pellet
applications. 1" clearance to masonry for
wood-burning applications. Insulation is
required for 0" clearance to masonry for
wood-burning. Ventinox VFT single-wall
exible lining system is listed at 0" clearance
to masonry chimney for oil and gas. With
Thermix or ProFoil insulation 0" clearance
for solid fuels. Ventinox VG single-wall
exible lining system is listed at 0" clearance
to masonry for gas appliances. Check with
your appliance manufacturer to see if larger
clearances are required. Do not ll any air
space clearances with insulation.
PERMITS
Before installation, check with your local
Building Ocial, Fire Ocial, or other
authority having jurisdiction regarding
permits, restrictions, and installation
inspections in your area.
EQUIPMENT AND MATERIALS
90 Angle Grinder
Circle cutting Guide
Up-Cut Mill Bit
Ovalizing Machine
Tape Measure
Proper Gloves and Shoes
Eye Protection
GENERAL INSTALLATION NOTES
Read through these installation instructions
before beginning your installation. A
properly listed installation is dependent
upon installing the vent in full compliance
with these installation instructions. Proper
planning for your exible lining installation
will result in greater safety, eciency, and
convenience, as well as saving time and
money. You must use only authorized
M&G DuraVent vent parts, or other parts
specically authorized in these instructions
and listed by the appliance manufacturer in
order to maintain a safe, approved system.
Do not mix parts or try to match with other
products or use improvised solutions. Do not
install damaged or modied parts. Practice
good workmanship. Sloppy work could
jeopardize your vent’s safety. Keep electrical
wiring and building insulation away from
all chimneys and vents. When deciding the
location of your installation, try to avoid
modications to structural components
of the building. If you have any questions,
contact either your dealer or M&G DuraVent
directly.
Refer to the appliance manufacturer for
the maximum and minimum allowed vent
runs for your specic appliance model,
including maximum number elbows allowed
in the system, and for the pressure drops
and equivalent length of the ttings. The
total vent length from the appliance to the
termination shall not be greater than what is
specied by the appliance manufacturer.