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:
[e-mail]

If you are searching for tech support or product
information, please phone us at 800-835-4429.
Or email us at:
[e-mail]

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

efciency 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 ofcial 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 specied 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

specied 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