DuraVent PolyPro Flex User Manual

Installation Instructions

PolyPro Double-Wall Flex
Gas Vent System for Category II &
IV Gas-Burning Appliances

PolyPro

®

Flex

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 POLYPRO

® BE INSTALLED ONLY IN

ACCORDANCE WITH THESE INSTRUCTIONS.

• Assure unrestricted vent movement

IMPORTANT

Throughout this manual you will see

special attention boxes intended to

supplement the instructions and make

special notice of potential hazards.

In the judgement of M&G DuraVent,

these categories mean:

WARNING

Indicates a condition or hazard which

may cause severe personal injury, death

or major property damage.

CAUTION

Indicates a condition or hazard which

will or can cause minor personal injury

or property damage.

WARNING

Risk of carbon monoxide poisoning

or re due to joint separation or pipe

breakage.

• Examine all components for possible

shipping damage prior to installation;

• Read all instructions before beginning

the installation and follow these
instructions exactly as written.

• Proper joint assembly is essential for a

safe installation. Check the integrity of
ALL joints upon completion of assembly

• This venting system must be free to

expand and contract under normal
operation.

where required through walls, ceilings
and roof penetrations.

• This venting system must be supported

in accordance with these instructions.

• Do not mix pipe, ttings, or joining

methods from dierent vent system
manufacturers. Do not use adhesives of
any kind with this venting system.

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
to help improve our product oering. 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]

PolyPro® is one of M&G DuraVent's
GreenVent® line of products.

2

PolyPro Flex Gas Vent System

For the most up-to-date installation instructions, see www.duravent.com

CONTENTS

APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

MINIMUM CLEARANCE TO COMBUSTIBLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

GENERAL INSTRUCTION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 4

INSTALLATION OF FLEX GASKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MASONRY / SHEET ROCK ENCLOSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

B VENT / RELINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

PolyPro

®

Flex

3

APPLICATION / LISTING

For specic information on application,
equivalent length of ttings, listings, etc.,
please reference M&G Duravent's installation
instructions for rigid pipe (Document L273).

M&G Duravent's PolyPro vent pipe should not
be installed in areas where the temperature
could exceed 230 F / 110 C.

PERMITS

Check with your local Building Ocial, Fire
Ocial, or other authority having jurisdiction
regarding permits, restrictions, and
installation inspections in your area.

MINIMUM CLEARANCE TO
COMBUSTIBLES

Refer to Table A for minimum clearances
to combustible materials. Use the values
shown in this table unless the appliance
manufacturer species otherwise. If there
is a conict between the two, the greater
clearance shall apply. It is prohibited to place
any type of insulation around the venting
system within these clearances.

CAUTION

Installation applications and
terminations shown in these

instructions must be approved by

the manufacturer of the appliance to

which it is applied. Use only listed M&G

DuraVent terminations with PolyPro

Venting.

Table A

Minimum Clearance To Combustibles Table

VENT ORIENTATION

Horizontal Single Wall: 0" for ue temperatures up to 194*F (90*C).

Vertical Single Wall: 0"

IMPORTANT

The vent system must terminate in

accordance with local code requirements

and appropriate National Codes:
In the US: NFPA 54 / ANSI Z223.1

National Fuel Gas Code or the

International Fuel Gas Code.

In Canada: CAN/CGA-B149.1 Natural

Gas Installation Code or CAN/CGA-149.2

Propane Installation Code.

GENERAL INSTALLATION NOTES

Reference the Installation Instructions
provided with M&G Duravent's rigid pipe
(L273) for general instructions. PP Flex must

be enclosed, and used in conjunction with
rigid PP pipe to connect to an appliance.

• When used to conduct ue gases, PP ex

must not be installed at an angle greater
than 45 degrees from vertical. This will
ensure proper condensate ow back
towards the appliance outlet.

• PP Flex may be used to bring

combustion air into the appliance. In
these instances, pipe can be unenclosed
and oriented in a vertical or horizontal
position.

• PP ex must be treated carefully to

prevent damage when being installed
during low temperatures (<41°F, < 5 °C).
In colder weather, pre-warm ex prior
to installation. When relining, it may be
easier to insert ex from the bottom up

CLEARANCE

1/4" (6mm) for ue temperatures up to 230*F (110*C).

Flex: N/A- NOT ALLOWED

Flex: 0" (Must be enclosed)

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