M&G DuraVent DuraLiner User Manual
Installation Instructions
High-Temperature, Factory Insulated
Double-Wall Masonry Relining system
5" Round
6", 8" Round and Oval
DuraLiner
®
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE
TO MAINTAIN REQUIRED CLEARANCES (AIR SPACES)
TO COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST
IMPORTANCE THAT DURALINER BE INSTALLED ONLY IN
ACCORDANCE WITH THESE INSTRUCTIONS.
IMPORTANT:
Read through all of these instructions
before beginning your installation. Failure
to install this product as described in these
instructions will void the manufacturer’s
warranty, may create a re or other safety
hazard, and may affect your homeowner’s
insurance and safety listing of your
appliance.
Keep these instructions for future
reference.
Dear Customer, Installer, or End User:
We welcome any comments regarding matters
pertaining to our DuraVent products.
We welcome any ideas, input or complaints
and I’ll make sure that someone responds
directly back to you.
Send your emails to:
president@duravent.com
If you are searching for tech support or product
information, please phone us at 800-835-4429.
Or email us at:
techsupport@duravent.com
MH14420
DURALINER INSTALLATION INSTRUCTIONS
For the most up-to-date installation instructions, see www.duravent.com
CONTENTS
APPLICATION AND LISTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
GENERAL INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .5
OPEN HEARTH INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
MASONRY BREACH INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
COMBUSTIBLE WALL BREACH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EXTEND-A-CAP INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
INSULATING FLEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TRANSITION ANCHOR PLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
DURALINER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
DuraLiner
®
3
IMPORTANT MEASUREMENTS
1
1. Flue size I.D.:
• _____________________
2. Opening of replace:
• height _____________
• width ______________
• depth ______________
4
• length______________
• width ______________
3. Damper opening:
3
6
4. Total chimney and replace height:
• ___________________
5. Total chimney height to tee opening:
2
Figure 1
1
• ___________________
6. Height to rst tile:
• ___________________
7. Height of appliance:
• ___________________
A
5
4
B
3 1/2”
TYPE A B
6" ROUND 7" 7"
8" ROUND 9" 9"
6" OVAL 8" 5 1/2"
8" OVAL 11 5 1/2" - 6"
Figure 2
Figure 3
4
APPLICATION AND LISTING
DuraLiner is a double-wall, insulated allfuel reliner for masonry chimneys, used for
natural draft venting of gas, liquid and solid
fuel appliances. DuraLiner is listed to UL
1777 and ULC S635 under listing le number
MH14420, where maximum continuous
ue gas outlet temperatures do not exceed
1000°F/538°C (UL 1777) or 1200°F/650°C
(ULC S635). DuraLiner is approved for
installation with zero clearance between
the liner and masonry, plus zero clearance
between the masonry and combustibles.
When the Transition Anchor Plate is used,
Round DuraLiner pipe can be coupled to a
Duravent factory built 103HT chimney system
at the end of a masonry enclosure.
GENERAL INSTALLATION
INSTRUCTIONS
Follow both these and the appliance manufacturer’s instructions and manual for maximum
efciency and safety. Connect only one ue
liner per appliance. DO NOT mix or match
with other products or improvise solutions(You may void warranties). DO NOT modify
parts.
Contact your local building ofcial or re
department regarding permits, restrictions,
and installation inspection in your area. Have
a professional installer thoroughly inspect (to
code requirements) and clean the existing
masonry ue of tar glaze creosote before
relining. The chimney should be checked
for cracked, loose or missing bricks, mortar,
or other materials that could inhibit correct
installation of the liner system. Make
necessary repairs prior to starting install.
Do not place insulation or other materials
other than specied in these instructions
around the liner or in required air spaces.
Determine if your setup is an open hearth
(Fig.1) or wall breach installation (Fig.2). Also
determine the available size of your chimney
and the corresponding allowable DuraLiner
size. (Fig.3)
• If you have an open hearth setup, verify
your ue size, and the replace opening
and depth before you purchase your
appliance and reliner.
• If you have a wall breach tee installation
setup, verify your ue size and chimney
height from tee, before you purchase your
appliance and reliner.
DuraLiner shall be sized not less than that
specied in the appliance manufacturer’s
instructions. Vent sizing is especially important
in areas with low ambient temps and low
temp ue products. Determine the required
size of DuraLiner and the correct Appliance
Connector (follow appliance manufacturer’s
recommendations). There are three different
types of appliances connections (Fig.4).
ROUND CONNECTOR
HIGH TEMPERATURE
SEALANT
APPLIANCE
APPLIANCE INSERT
HIGH TEMPERATURE
SEALANT
ROUND CONNECTOR
OVAL CONNECTOR
HIGH TEMPERATURE
SEALANT
APPLIANCE
Figure 4
5
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