DuraVent PolyPro User Manual

Installation Instructions

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

PolyPro

®

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.

WARNING

CARBON MONOXIDE POISONING
HAZARD. Failure to follow the steps
outlined below for each appliance
connected to the venting system being
placed into operation could result in
carbon monoxide poisoning or death.

• 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.

• Assure unrestricted vent movement

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.
insurance and safety listing of your
appliance. Acceptance of the installed
system is dependant on full compliance
with these installation instrucitons

WARNING

Risk of carbon monoxide poisoning
or re due to joint separation or pipe
breakage.

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 line of
products.

PolyPro Single-Wall Gas Vent System

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

CONTENTS

LISTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 4

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

PERMITS . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 4

GENERAL INSTALLATION NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CLEARANCES TABLE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 4

CONDENSATE DRAIN . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .4

JOINT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . 5

EQUIVALENT LENGTH CHART TABLE 2 . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . 5

APPLIANCE CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ENCLOSURE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

HORIZONTAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

WALL AND CEILING PENETR ATION TABLE 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

VERTICAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

MULTIPLE VENT RUNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ALUMINUM FLEX AIR INTAKE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

PolyPro

®

3

LISTING

Listed to ULC S636
Rated Class IIA, IIB, and IIC vent system

maximum temperature 230°F (110 °C)
maximum positive pressure 15 in-w.c.

Massachusetts Plumbers Board,

# G1-0811-42

APPLICATION

ANSI Category II and IV gas-burning
appliances
Appliances specically tested and listed to
use M&G DuraVent PolyPro Venting

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.

GENERAL INSTALLATION NOTES
Read these instructions before beginning.

You must use only authorized M&G DuraVent
PolyPro vent parts, or other parts specically
authorized in these instructions and/or listed
by the appliance manufacturer in order to
maintain a safe, approved system.

• Do not ll any air space clearance

(Table 1) with insulation.

• Do not mix parts or try to match with

other products or use improvised
solutions.

• Do not install damaged or modied

parts.

Table 1

• Use soapy water to lubricate gaskets.

• Never use Petroleum base lubricants.

If these directions and those of the appliance
manufacturer dier, follow the more
conservative requirements. If you have any
questions, contact either your dealer or M&G
DuraVent directly. A venting system must
not be routed into, through, or within any
other vent, such as an existing masonry or
factory-built chimney ue, unless that vent
or chimney is not being used to vent another
appliance and is only used as a conduit for
the gas-vent system. Plastic venting systems
shall not pass through re rated separations
without approved restopping.

Refer to the appliance manufacturer's
instructions for maximum and minimum
vent lengths permitted with your specic
appliance model. This information should
include guidance on the maximum number
of elbows and related pressure-drops. The
total vent length from the appliance to
the termination shall not be greater than
specied by the appliance manufacturer.
If specic guidance is not oered by the
appliance manufacturer as to Equivalent
Vent Lengths (EVL) for vent components, the
general guidelines in Table 2 can be used.

CONDENSATE DRAIN (Fig.1)

Refer to the appliance manufacturer’s
installation instructions for requirements of
condensate drainage. Ensure proper system
slope for drainage. (Fig.7)

Clearance to Combustibles

VENT PIPE ORIENTATION

Single Wall Vertical Horizontal

Up to 190°F 0" 0"

Up to 230°F 0" ¼" (6mm) all around

Concentric

Up to 230°F 0" 0"

4

IMPORTANT

The vent system must be compliant 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.

IMPORTANT

To prevent possible recirculation of ue
gases, the installer must consider the
eects of prevailing wind conditions,
eddy zones, nearby buildings,
obstructions, or other obstacles such as
shrubs when planning exhaust and air
intake locations. M&G DuraVent can not
be held responsible for poor appliance
performance or damage to buildings
due to an incorrect installation. The
minimum clearances detailed within our
instructions may not be adequate in some
circumstances depending on the specics
of the installation. For this reason we
always recommend vertical venting.

SIPHON

P-TRAP

Figure 1

WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow these installation

instructions could result in personal

injury or death

JOINT CONNECTIONS

Verify the gasket is seated evenly inside the
groove in the female end. There are two
versions of locking band available, one with
stando legs (Fig.2), one without (Fig.3).
For both: Slide Locking Band on male pipe
section. Fig.2: For pipe without Locking
Button: Slide pipe sections together until
joint is bottomed out then slide apart

¼”
to 5/8” (7.5 - 15 mm) for expansion. Clip the
locking band clasp onto the female hub.
Fig.3: For PP/Metal pipe with Locking Button:
Insert locking button into locking band
recess, rotate button away from Locking
Band Clasp, insert pipe sections, push
lock band clamp downward into socket,
disengage button 1/4" from socket. Screws

are not allowed for joint connection.
Never penetrate the wall of PolyPro vent
pipe. (Exception- a SS screw may be
used outside the building on exterior
termination ttings to orient an elbow,
etc).

• IMPORTANT: Locking bands are

Table 2 - Equivalent Length Chart

2" Equivalent

Length

1-ft Vent Pipe 1-ft 1-ft 1-ft 1-ft 1-ft 1-ft

2-ft

1-ft Flex Pipe

1-ft Flex Pipe

45 Elbow 3-ft 3-ft 5-ft 6-ft 6-ft 13-ft

90 Elbow 5-ft 7-ft 12-ft 14-ft 14-ft 19-ft

Tee 9-ft 12-ft 19-ft 21-ft 22-ft 29-ft

(same diameter

as rigid)

0.4-ft

(updsized one

diameter)

3" Equivalent

Length

2-ft

(same diameter

as rigid)

0.6-ft

(updsized one

diameter)

4" Equivalent

Length

2-ft

(same diameter

as rigid)

0.6-ft

(updsized one

diameter)

5" Equivalent

Length

2-ft

(same diameter

as rigid)

N/A N/A N/A

6" Equivalent

Length

N/A N/A

8" Equivalent

Length

5

MALE

FEMALE

END

LOCKING
BUTTON

END

Figure 2

LOCKING
BAND RECESS

LOCKING
BAND CLASP

LOCKING BAND

PUSH DOWN

TO LOCK

VERIFY GASKET IS
SEATED IN FEMALE
END OF PIPE

PRY OUT

TO UNLOCK

CLICK!

APPLIANCE CONNECTION: 2" - 4"

1. If the appliance has a PVC/CPVC female

outlet use the Appliance Adapter/ PVC
Adapter and Clamp. (Fig.4)

• If the appliance has a PVC/CPVC

Male outlet use a matching PVC/
CPVC coupling to convert to a
female outlet.

2. If the appliance outlet has a rubber

boot or Fernco-style appliance adapter,
then the PolyPro vent pipe may attach
directly to the appliance (Fig.5).

3. If the appliance has a FasNSeal outlet

then use the FasNSeal to PolyPro
adapter.

1/4"

POLYPRO PIPE

APPLIANCE
ADAPTER CLAMP

APPLIANCE ADAPTER/
PVC ADAPTER

APPLIANCE
EXHAUST OUTLET
OR PVC UNION

Figure 3

mandatory on all exhaust vent joints
on pipe sizes from 2" up to 4". (Fig.2, 3)

• For 5"-8" diameter, Locking Bands are

not required but strongly recommended
at every exhaust vent joint.

(Fig.2, 3)

• Locking bands are optional for air inlet

vent joints.

POLYPRO TO DURAVENT / SECURITY
CHIMNEY METAL VENT CONNECTION

Approved M&G Duravent / Security Chimney
1738/636 metal vent ttings can be used with
PolyPro. For PolyPro (female) to Metal Vent
(Male) connections, the metal ttings will have
a Locking Button or Protrusion, and will be
connected simliar to Fig. 3.

6

(Fig.2, 3)

APPLIANCE

Figure 4

Figure 5

POLYPRO
VENT PIPE

TIGHTEN CLAMPS ON
RUBBER COUPLER
ADAPTER OR FERNCO
STYLE ADAPTER TO
SECURE VENT
PIPE TO APPLIANCE

APPLIANCE
OUTLET

INSTALLATION

1. Pipe lengths may be cut to length

(Fig.6). Use an alternate clamp (Fig.4­PPS-PAC / PPS-LBC) for the connection
if a locking button (Fig.3) is removed.

• Cut square (not at an angle) to the

end of the pipe.

• Remove burrs before assembly.

MARK

CUT WITH
HACKSAW

TO APPLIANCE

5/8"

1/4"  5/8"

7.5mm  15mm

MIN

12"

Figure 7

IMPORTANT

PP Pipe sections must be disengaged 1/4"­5/8" per joint (to allow for expansion) and
sloped 3°(5/8"per ft) back to the appliance
per Fig.7 for proper condensate flow.

DEBURR

Figure 6

2. Check with appliance manufacturer for
any restrictions or limits on vent length,
number of elbows, etc.

3. The slope of the vent pipe must be at
least 3° (5/8" per ft, 50mm per meter)
back to the appliance. (Fig.7)

4. Every horizontal section must be
supported. (Fig.8)

5. The venting system shall be securely
supported using suitable hangers.
Duravent hardware is recommended; eld
supplied support hardware suitable to
the AHJ is acceptable, hardware must not
deform or damage the vent. (Fig. 7 and 8)
Make sure the load of the vent system is not
supported by the appliance.

• On Duravent and other certain clamp

styles, ¼” or greater All-thread may be
used as an extension.

6. Vertical installations must be supported
every 10 feet (3 meters) or less. (Fig.8)

7. Do not install / enclose PolyPro in the stud
space of a wall.

8. Elbows and Tees are suciently supported
when a bracket is xed at the female end of
the connected straight section. (Fig.8)

ALLTHREAD

LOCKING BANDS
REQUIRED AT EVERY
EXHAUST JOINT

MAX
10FT
3m

WALL STRAP

MINIMUM 1PER

HORIZONTAL PIPE

SECTION

Figure 8

9. Vertical components can be insulated in
unconditioned space or when ran outside.

10. Use black UV protected components on
venting installed on the exterior.

ENCLOSURE REQUIREMENTS
Through Rooms: Interior vents shall be

enclosed where they extend through closets,
storage areas, occupied spaces, or anyplace
where the surface of the vent could be
contacted by persons or combustible materials
except when installed in the room with the

appliance.

7

Multi-Story: Consult local building or other
applicable codes for requirements in your
area. In the U.S., NFPA 211 10.6.3 (2013)
states: “Vents that pass through the oors
of buildings requiring the protection of
vertical openings shall be enclosed within an
approved enclosure. The enclosure walls shall
have a re resistance rating of not less than
1 hour where a vent is located in a building
less than four stories in height. The enclosure
walls shall have a re resistance rating of not
less than 2 hours where a vent is located in a
building four or more stories in height."

If the vent system is not exposed to wind or
lateral load within the enclosure and joints
cannot buckle, wall straps are not required
provided upper and lower supports are
proper.

ENCLOSURE

FIRESTOP

FIRESTOP

FIRESTOPS (Fig. 9)

1. Firestops are required at each ceiling/
oor penetration including an attic.
Firestops are not required at the roof
deck penetration.

2. Cut and/or frame hole. (Table 3)

3. Slide the two halves together and attach

to the ceiling.

INTERIOR

WALL PLATE

ALIGN TABS WITH
MOUNTS

EXTERIOR
WALL PLATE

GASKET

Figure 10

TERMINATIONS:

Horizontal Single Pipe (Fig.10)

1. Locate penetration in wall.

2. Cut or cut and frame hole. (Table 3)

3. Attach Inner Plate to wall.

4. Attach / seal Outer Plate to outside wall.

5. Line up keyway, slide black pipe (UV
Protected) or termination through
plates.

6. If termination is used, attach with
screws. Align tabs with pipe mounts.

REMOVE GASKET

FIRESTOP

INSERT BIRD GUARD

Figure 9

Figure 11

8

Table 3 - Wall & Ceiling Penetration Sizing Table

VENT DIAMETER

Termination 2" 3" 4" 5" 6" 8"

CONCENTRIC
VERTICAL OR HORIZONTAL

TWIN PIPE HORIZONTAL
CLASS IIB

TWIN PIPE HORIZONTAL
CLASS IIC (Framing Dimensions)

4 ⁄"

105mm

7 ⁄" x 2⁄"

187mm x

65mm

8" x 3"

200 x 77mm

5 ⁄"

130mm

8 ⁄" x 3⁄"

212 x 85mm

8 ⁄" x 3⁄"

225 x 98mm

6 ⁄"

155mm

9" x 4⁄"

228 x 100mm

9 ⁄" x 4 ⁄"

238 x 112mm

N/A N/A N/A

N/A N/A N/A

N/A N/A N/A

SINGLE HORIZONTAL
CLASS IIB

SINGLE HORIZONTAL
CLASS IIC (Framing Dimensions)

SINGLE WALL W/ LOCKING BAND
VERTICAL

SINGLE PIPE NO LOCKING BANDS
VERTICAL

2⁄"

65mm /

3"

77mm

3 ⁄" "
85mm

3 ⁄

98mm

3 ⁄" 4 ⁄" 5 ⁄" 6 ⁄" 7 ⁄" 9 ⁄"

3" 3 ⁄" 4 ⁄" 5 ⁄" 6 ⁄" 7 ⁄"

7. Add additional components to raise vent
level if desired (vent to be 12" above
grade or average snow level).

8. Remove gasket and install Bird Guard
into end of pipe. (Fig.11)

9. Install Poly Pro venting system to/from
termination to appliance.

POSITIONED
HORIZONTALLY

INTERIOR

WALL PLATE

EXTERIOR WALL PLATE

EXHAUST PIPE

APPLY BEAD OF SILICON SEALANT
AROUND FEMALE END OF PIPE TO
SEAL AGAINST EXTERIOR WALL PLATE

EXHAUST TIP

4" "

100mm

4 ⁄

112mm

N/A N/A N/A

N/A N/A N/A

Horizontal Twin Pipe (Fig.12)

1. Locate penetration.

2. Cut or cut and frame hole. (Table 3)

3. Attach interior wall plate to inside wall.

4. Attach and seal exterior wall plate to
outside wall.

5. Slide pipes through outer plate.

6. Rotate pipes to slide pipe past keyway.

POSITIONED
VERTICALLY

AIR INLET PIPE

OUTER COVER PLATE

Figure 12

9

7. Slide exhaust tip into exhaust pipe.

8. Mount outer cover plate to exterior wall
plate.

9. install Poly Pro venting system to/from
termination to appliance.

Horizontal Concentric (Fig.13)

1. Locate penetration.

2. Cut hole. (Table 3)

3. Attach and seal exterior exterior wall
plate onto outside wall.

4. Slide cap through exterior wall plate into
hole from outside building. Cap must

not be installed sloped downward.

5. Orient termination so air intake slots
face down.

6. Seal termination to exterior wall plate
with silicone sealant.

7. Slide interior wall plate over termination
and attach to wall from inside the room.

8. Attach interior wall plate to termination
with provided hardware.

9. Install gaskets into Co-Linear Adapter.

10. Attach Co-Linear Adapter to Horizontal
Termination.

11. Install Poly Pro venting system to/from
termination to appliance.

INSTALL
GASKETS

INTERIOR
WALL PLATE

EXTERIOR
WALL PLATE

POLYPRO PIPE

W/PVC ADAPTER

SUPPLIED WITH

TERMINATION KIT

BRACKET

Figure 14

Lochinvar 2" installation (Fig.14)

1. Slide PolyPro pipe w/ PVC adapter into
oblong hole and down. Brackets will
point away from the wall, on the exterior
of the house, and rest between the two
outward beads.

2. Install the termination assembly
in accordance with appliance
manufacturer’s instructions.

3. Verify exhaust pipe cannot be removed
from termination cap.

POLYPRO PIPE

W/PVC ADAPTER

SUPPLIED WITH

TERMINATION KIT

COLINEAR

EXHAUST

AIR INTAKE

10

ADAPTER

SCREW TO

TERMINATION

Figure 13

HORIZONTAL
TERMINATION

Figure 15

Lochinvar 3" & 4" installation (Fig.15)

1. Slide PolyPro Pipe w/ PVC adapter into
small hole of retaining plate until it stops
on the adapter collar.

2. Finish installing the termination
assembly in accordance with appliance
manufacturer’s instructions. PolyPro

pipe is to be installed on the exhaust
outlet.

3. Once securely installed to exterior, verify
exhaust pipe cannot be removed from
termination cap.

Stainless Horizontal (Fig.16)

1. Cut opening in the wall.

2. Add Trim Plates and locking band (if
applicable) to nal pipe length before
installing. Make sure anges are facing
towards the wall. Use non-hardening
sealant where necessary.

3. After exterior trim plate is mounted to
wall, measure 3" from exterior plate and
cut o female pipe end. Duburr. Seal
pipe to exterior plate. Slide Bird screen
over cut pipe end and tighten clamp.

THROUGH HOLE SIZING
4PPS: 4.125" 5PPS: 5.25"
6PPS: 6.125" 8PPS: 8.00"

EXTERIOR PLATE

FLANGES

CUT LINE

INTERIOR PLATE

INITIAL

TERMINATION

CAP

STORM COLLAR

FLASHING

SUPPORT CLAMP

Figure 18

EXHAUST

AIR INLET

BIRD
SCREEN

CLAMP

Figure 16

Figure 17

PP PIPE

CENTERLINE OF
EXHAUST OUTLET
OF APPLIANCE

FINAL

Figure 19

Vertical Concentric (Fig.18)

1. Locate penetration. (Fig.17)

2. Cut hole in roof. (Table 3)

3. Cut hole in ceiling above appliance.

• Cut hole(s) big enough for pipe in all

ceilings above appliance if installing
in a multi story installation.

4. Firestop each ceiling penetration.

5. Attach ashing to roof. (Fig.18)

• Slide storm collar onto ashing if

using the Adjustable Roof Flashing.

6. Slide vertical termination into ashing
from above until seated on ashing.

7. Plumb Termination and mount support
bracket to structure.

11

8. Install gaskets into Co-Linear Adapter (if
applicable). (Fig.13)

9. Connect Co-Linear Adapter to
termination (if applicable). (Fig.19)

10. Install Poly Pro venting system to/from
Co-Linear Adapter or termination to
appliance.

BIRD GUARD

BLACK

UV PROTECTED PIPE

max length rectangle, 4 vent runs max per
support. The listing requires clearance holes
no larger than 5 1/8" Dia, with spacing 1 3/4"
apart.

The upper support plate (with a ange for
B vent and factory built chimney, Fig.22)
must be axed to the top of the conduit via
screws. Anchor bolts must be used when
attaching a at support plate to the top of
Masonry or other chase (not shown). Support
plate must be weather tight. The SS Hanger
Bracket is installed under the Gasket Plate
and axed to the top of the support plate
with screws (Fig.22). Use non-hardening
sealant as required.

RUBBER FLASHING

Figure 20- Vertical Pipe Termination

Vertical single pipe (Fig.20)

1. Follow instructions for Vertical Concentric
Termination.

2. Attach ashing to roof. (Fig.20)

• Rubber boot ashing or similar,

ensure an eective, leak-proof seal
is maintained.

• Use BLACK UV protected pipe.

3. Maintain 12 in. (305mm) min. clearance
above highest anticipated snow level,
max 24 in. (610mm) above roof.

MULTIPLE VENTS IN ONE CONDUIT Fig.21

Multiple PolyPro Rigid/Flex vent systems may
be installed within one conduit. Listed 2"-4"
M&G components must be used, and the
conduit (if pre-existing) must be inspected
and deemed sound.

Upper supports may be eld supplied and
listed, the listing requires: Min thickness of 24
ga (0.020") SS, no larger than 18" Dia or 18"

The lower portion of the vent system must
be supported and restopped as detailed
earlier in these and/or the PP Flex instructions
(provided separately).

GASKET PLATE

/ HANGER

MOUNT

HARDWARE

GASKET

PLATE

1.75" MAT'L
SPACE MIN

CLEARANCE

HOLE

STAINLESS

RELINE

HANGER

BRACKET

POLYPRO

FLEX LINER

RIGID BLACK
UV PROTECTED
POLYPRO

STAINLESS
UPPER
SUPPORT
PLATE

FLANGE

RIGID
POLYPRO

Figure 21

12

Figure 22

HANGER
MOUNTED
TO TOP OF
SUPPORT,
BELOW
GASKET
PLATE

SEAL AS
REQ'D

M&G DURAVENT

POLYPRO
CHIMNEY CAP
TERMINATION

COMBUSTION

AIR INTAKE

FLEX HANGER

BRACKET AND

HARDWARE

FLEX CLAMP

STORM COLLAR

M&G DURAVENT
POLYPRO
EXHAUST SYSTEM

ALUM FLEX AIR INTAKE (Fig.23)

Important: This section only applies to
sourcing combustion air!

Reference Fig.23 for installation of air intake
ex when used with the M&G DuraVent
Chimney Cap Termination. Combustion air
is drawn in under the storm collar. Ensure
Aluminum ex is approx 1"-2" below
termination base for unrestricted operation.
See Fig.24 for the lower install.

MAINTENANCE

Have your venting system checked annually.
This can be done easily by the same
technician who inspects & services the
appliance. Recommended areas to inspect
are as follows:

- Check areas of the Venting System which
are exposed to the elements for wear or
damage. If damage is found, the components
should be replaced immediately.

- Where possible, look into the Termination
Cap to verify no foreign material is there to
block the vent. Remove any foreign material
found.

- Where practical, inspect joints to verify
that no Pipe Sections or Fittings have been
disturbed, and consequently loosened. Also
check mechanical supports such as Wall
Straps, support plates, etc for rigidity.

AIR INTAKE

AIR INTAKE

FLEX

AIR INTAKE

FLEX TO
POLYPRO
ADAPTER

FLEX

Figure 23- Upper Assy

Figure 24- Lower Assy

ENCLOSURE

M&G DURAVENT
POLYPRO
EXHAUST SYSTEM

POLYPRO PIPE TO
APPLIANCE AIR
INTAKE

13

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POLYPRO WARRANTY

M&G DuraVent, Inc. (“ DuraVent”) provides t his warranty for Po lyPro® for ten years. Subj ect to the limitati ons set forth b elow, DuraVent warrants that it s
produc ts will be free fr om defects in m aterial or manufac turing, if proper ly installed, mainta ined and used. DuraVent pro ducts are fully wa rranted if install ed
only by a profe ssional installer. This War ranty is transf erable from the or iginal homeowner to t he buyer of the home wit hin the warranted ten ye ars. This
warrant y does not cover norma l wear and tear, smoke damage or damage c aused by chimney re s, acts of God, or any pr oduct that was: (1) purchase d
other than f rom an authorized D uraVent dealer, retailer or distr ibutor; (2) modied or a ltered; (3) improperly ser viced, inspec ted or cleaned; or (4) subjec t to
negligence o r any use not in accordance wit h the installation in structions i ncluded with the pr oduct as determin ed by DuraVent.

Installation instruc tions are available online at www.duravent.com under Support /Literature and th rough our Customer Se rvice Depart ment
800 -835-4429
or [e-mail].

DuraVent provide s the following warr anties for PolyPro: On e Hundred Percent (100%) MSRP 10 years f rom the date of purchase .

All warrant y obligations of Dur aVent shall be limi ted to repair or replaceme nt of the defecti ve product pursu ant to the terms and condi tions applicable to
each produc t line. These reme dies shall constitu te DuraVent’s sole obligatio n and sole remedy under t his warranty. This war ranty provides n o cash surrender
value. The ter ms and conditions of th is warranty may not be m odied, altered or w aived by any action, ina ction or represe ntation, whether or al or in
writing , except upon the exp ress, written au thority of an exe cutive ocer of DuraVent.

This produc t is intended for ven ting only categor y II & IV appliances burni ng Natural Gas, Propan e and Oil. All other fuels ar e not covered under this
warranty.

LIMITATIONS ON POLYPRO INTE RNET SALES: Notw ithstanding any ot her terms or conditio ns of this PolyPro Warrant y, DuraVent provides no warra nty for
PolyPro® if it is n ot installed by a qualie d professional ins taller.

DuraVent must be no tied and given the op portunity t o inspect defe ctive produc t prior to replacement und er the terms of this limit ed lifetime warra nty.
All warrant y claims must be subm itted with proo f of purchase. Labor an d installation cost s are not covered under t his warranty. To obtain warr anty service
contact : DuraVent Warranty Ser vice, 877 Cotting Ct., Vaca ville CA 95688, or call 8 00-835-442 9.

WHERE LAWFUL , DURAVENT DISCLAIMS AL L OTHER WARRANTIES, INCLUD ING BUT NOT LIMITED TO IMPLIED WARR ANTIES OF MERCHAN TABILIT Y AND
FITNESS F OR A PARTICULAR PURPOSE. IN N O EVENT WILL DURAVENT BE L IABLE FOR INCIDENTAL, CONSE QUENTIAL, PUNITIVE O R SPECIAL DAMAGES OR
DIRECT OR I NDIRECT LOSS OF ANY KIND, INCLU DING BUT NOT LIMITED TO PROPE RTY DAMAGE AND PERSONAL I NJURY. DURAVENT’S ENTIRE LIABIL ITY
IS LIMITED TO THE P URCHASE PRICE OF THIS PRO DUCT. SOME STATES DO NOT ALLOW LIMITATIONS ON IMPLIE D WARRANT IES, OR THE EXCLUSION OR
LIMITATION OF INCIDEN TAL OR CONSEQUE NTIAL DAMAGES, SO THE ABOVE L IMITATIONS AND E XCLUSIONS MAY NOT APPLY TO YOU. THIS LIMIT ED
WARRANTY GI VES YOU SPECIFIC LEGAL RI GHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE.

For the mos t up-to-date ins tallation instr uctions, see www. duravent.com

REV 9.4.2012

Customer Service Support 800-835-4429 707-446-4740 FAX www.duravent.com

PolyPro® is a registered trademark of M&G DuraVent, Inc.
All rights reserved, ©2014 M&G DuraVent is a member of M&G Group.

820003161- L273 08/2014