DuraVent PolyPro Series User manual

PolyPro®
Installation Instructions
PolyPro Single-Wall and
Concentric Gas Vent System for
Category II & IV
Gas-Burning Appliances

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.
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.
If you are searching for tech support or
product information, please call us at:
800-835-4429
or email us at:
[email protected]
• 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.
• Ensure 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.
• Acceptance of the installed system is
dependent on full compliance with
these installation instructions.
WARNING
Risk of carbon monoxide poisoning
or re due to joint separation or pipe
breakage.
Keep these instructions for future
reference.
PolyPro® is one of DuraVent's line of products.
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.

3
PolyPro Single-Wall and Concentric Gas Vent System
For the most up-to-date installation instructions, see www.duravent.com
PolyPro®
CONTENTS
LISTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PERMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GENERAL INSTALLATION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CLEARANCES TABLE 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
EQUIVALENT LENGTH CHART TABLE 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ENCLOSURE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FIRESTOPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
WALL AND CEILING PENETRATION TABLE 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
POLYPRO SINGLEWALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
JOINT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
APPLIANCE CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HORIZONTAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
VERTICAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
MULTIPLE VENT RUNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
POLYPRO CONCENTRIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
JOINT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
APPLIANCE CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
HORIZONTAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
VERTICAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4
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 with a maximum positive
pressure of 15in w.c. and maximum ue gas
temperature of 230°F (110°C, ULC-S636-Class
IIC).
Appliances specically tested and listed to
use DuraVent PolyPro Venting.
PERMITS
Check with your local Building Ocial, Fire
Ocial, or other authority having jurisdiction
(AHJ) regarding permits, restrictions, and
installation inspections in your area.
GENERAL INSTALLATION NOTES
Read these instructions before beginning.
You must use only authorized 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 mix parts or try to match with
other products or use improvised
solutions.
• Do not install damaged or modied
parts.
• 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
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.
PolyPro Single-Wall attains Flame Spread /
Smoke Developed ratings of <25 / <50 (per
UL-723, ASTM E-84 and ULC-S102) when
used in conjunction with the below noted
materials:
• 3M Fire Barrier Plenum Wrap 5A+
• Unifrax FyreWrap 0.5 Plenum Insulation
• Knauf Insulation- Atmosphere Duct
Wrap with ECOSE
• Alternate equivalent listed product
Always follow the particular installation
instructions from the insulation wrap
manufacturer, in addition to those for the
PolyPro vent system. The venting system
shall be securely supported using suitable
hangers installed after the pipe has been
properly wrapped. Hardware must not
deform or damage the vent or wrap.
Table 1
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"
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

5
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.
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.
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 and 20)
When using a P-Trap style drain, connect
1-1/4in (32mm) tubing and secure into a
loop. Fill the loop partially with water to
prevent exhaust leakage. Route the free end
of the loop to an appropriate disposal.
Figure 1
SIPHON
Table 2 - Equivalent Length Chart
2" Equivalent
Length
3" Equivalent
Length
4" Equivalent
Length
5" Equivalent
Length
6" Equivalent
Length
8" Equivalent
Length
1-ft Vent Pipe 1-ft 1-ft 1-ft 1-ft 1-ft 1-ft
1-ft Flex Pipe
(same diameter
as rigid)
2-ft 2-ft 2-ft 2-ft N/A N/A
1-ft Flex Pipe
(up-sized one
diameter)
0.4-ft 0.6-ft 0.6-ft N/A N/A N/A
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
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow these installation
instructions could result in personal
injury or death.
P-TRAP

6
ENCLOSURE REQUIREMENTS
Through Rooms: Interior vents shall be
enclosed where they extend through closets,
storage areas, occupied spaces, or any place
where the surface of the vent could be
contacted by persons or combustible materials
except when installed in the room with the
appliance.
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."
Figure 2
FIRESTOPS
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 using either 8 penny nails
or #8 1-1/2in wood screws at each of the
four corners and at the two overlapping
sides (Fig.2)
Table 3 - Wall & Ceiling Penetration Sizing Table
VENT DIAMETER
Termination 2" 3" 4" 5" 6" 8"
CONCENTRIC
VERTICAL OR HORIZONTAL
4 ⁄"
105mm
5 ⁄"
130mm
6 ⁄"
155mm N/A N/A N/A
TWIN PIPE HORIZONTAL
CLASS IIB
7 ⁄" x 2⁄"
187mm x
65mm
8 ⁄" x 3⁄"
212 x 85mm
9" x 4⁄"
228 x 100mm N/A N/A N/A
TWIN PIPE HORIZONTAL
CLASS IIC (Framing Dimensions)
8" x 3"
200 x 77mm
8 ⁄" x 3⁄"
225 x 98mm
9 ⁄" x 4 ⁄"
238 x 112mm N/A N/A N/A
SINGLE HORIZONTAL
CLASS IIB
2⁄"
65mm /
3 ⁄" "
85mm
4" "
100mm N/A N/A N/A
SINGLE HORIZONTAL
CLASS IIC (Framing Dimensions)
3"
77mm
3 ⁄
98mm
4 ⁄
112mm N/A N/A N/A
SINGLEWALL W/ LOCKING BAND
VERTICAL 3 ⁄" 4 ⁄" 5 ⁄" 6 ⁄" 7 ⁄" 9 ⁄"
SINGLE PIPE NO LOCKING BANDS
VERTICAL 3" 3 ⁄" 4 ⁄" 5 ⁄" 6 ⁄" 8 ⁄"

Figure 3a
LOCKING
TAB
LOCKING
BAND RECESS
1/4"
CLICK!
LOCKING
BAND CLASP
VERIFY GASKET IS
SEATED IN FEMALE
END OF PIPE
Figure 3b
NEW
LOCKING
CLAMP
TIGHTEN HOSE
CLAMP TO SECURE
JOINT
VERIFY LOCKING
CLAMP HOOKS
UNDER GASKET
EXTRUSION
POLYPRO SINGLEWALL
JOINT CONNECTIONS
Locking Band (Old Design): Verify the
gasket is seated evenly inside the groove in
the female end of the pipe. For PP / Metal
pipe with a locking tab, slide the Locking
Band on to the male pipe section Fig.3a.
Insert locking tab into locking band recess,
rotate button away from locking band clasp,
insert pipe sections, push lock band clasp
downward over the socket, disengage tab
1/4"-5/8" from socket.
Locking Clamp (New Design): Verify the
gasket is seated evenly inside the groove
in the female end. Assemble the joint by
passing the male end of the Polypro Pipe
through the Locking Clamp on the hose
clamp side and into the female end of the
PolyPro pipe, (Fig.3b). Hook the Locking
Clamp onto the gasket extrusion on the
female end and tighten down on the hose
clamp.
The new Locking Clamp design is
backwards compatible with pipe sections
designed for use with the Locking Band.
Use pliers to break o the Locking Tab with
a twisting motion. Once removed, install
the pipe section following the Locking
Clamp instructions. Locking Clamps can be
purchased separately in packs of 12.
Fig.3a and b. Screws are not allowed for
joint connection. Never penetrate the
wall of PolyPro Single-Wall vent pipe.
(Exception: a stainless steel screw may
be used outside the building on exterior
termination ttings to orient an elbow,
etc).
• IMPORTANT: Locking Bands or Locking
Clamps are mandatory on all exhaust
vent joints
POLYPRO TO DURAVENT / SECURITY
CHIMNEY METAL VENT CONNECTION
To transition from PolyPro to Duravent /
Security metal vents that are UL 1738 or ULC
636 listed, an approved adapter must be used.
Installation of PolyPro (female) to metal vent
adapter (male) is the same process as illustrated
in Fig.3a and b.
7

8
Figure 5
APPLIANCE
OUTLET
POLYPRO
VENT PIPE
TIGHTEN CLAMPS ON
RUBBER COUPLER
ADAPTER OR FERNCO
STYLE ADAPTER TO
SECURE VENT
PIPE TO APPLIANCE
APPLIANCE CONNECTION: 2" - 4"
1. If the appliance has a PVC/CPVC female
outlet, use the Appliance Adapter/ PVC
Adapter and Clamp. (Fig.4)
2. If the appliance has a PVC/CPVC Male
outlet use a matching PVC/CPVC
coupling to convert to a female outlet.
3. 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).
4. If the appliance has a FasNSeal outlet
use the FasNSeal to PolyPro adapter.
Figure 4
POLYPRO PIPE
APPLIANCE
ADAPTER CLAMP
APPLIANCE ADAPTER/
PVC ADAPTER
APPLIANCE
EXHAUST OUTLET
OR PVC UNION
APPLIANCE
INSTALLATION
1. Pipe lengths may be cut to length
(Fig.6). If the Locking Tab is removed
use the new Locking Clamp (Fig.3b PPS-
LC) or alternative clamp ( Fig.4 PPS-PAC
/ PPS-LBC) for the connection.
• Cut square (not at an angle) to the
end of the pipe.
• Remove burrs before assembly.
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 1.8° (3/8" rise per ft run, 31mm
per meter) back to the appliance.
Ensure there are no dips in the system
where condensate can collect. (Fig.7)
Figure 6
MARK
CUT WITH
HACKSAW
DEBURR
Figure 7
12"
3/8"
MIN
1/4"  5/8"
7.5mm  15mm
TO APPLIANCE
PP Pipe sections must be disengaged
1/4"-5/8" per joint (to allow for expansion)
and sloped 1.8°(3/8"per ft) back to the
appliance per Fig.7 for proper condensate
flow.
IMPORTANT

9
MAX
5FT
1.5m
ATTACH WALLSTRAP 1" TO 12"
FROM LOCKING BAND
3/8" ALL
THREAD
LOCKING CLAMPS
OR BANDS ARE
REQUIRED AT EVERY
EXHAUST JOINT
WALLSTRAP
MINIMUM 1PER
HORIZONTAL PIPE
SECTION
MAX
10FT
3M
Figure 8
Figure 9
ALIGN TABS WITH
MOUNTS
GASKET
EXTERIOR
WALL PLATE
INTERIOR
WALL PLATE
TERMINATIONS
Horizontal Single-Wall Pipe (Fig.9)
1. Locate penetration in wall.
2. Cut and frame hole. (Table 3)
3. Attach Interior Wall Plate to interior wall.
4. Attach and seal Exterior Wall Plate to
exterior 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.
7. Add additional components to raise vent
level if desired (vent must be 12" above
grade or average snow level).
8. Remove gasket and install Bird Guard
into end of pipe. (Fig.10)
9. Install Poly Pro venting system from
appliance to termination.
Figure 10
REMOVE GASKET
INSERT BIRD GUARD
4. Every horizontal vent run must be
supported. (Fig.8)
5. The venting system shall be securely
supported using suitable hangers.
Supports made by DuraVent are
recommended; eld supplied supports,
such as all-thread or plumbers tape, that
are approved by the AHJ is acceptable. All
supports must not deform or damage the
vent. Ensure the load of the vent system is
not supported by the appliance.
• Duravent Wallstraps are designed
for use with 3/8”-16 all-thread rod to
extend from a wall, ceiling, or anchoring
point.
6. Vertical pipe lengths must be supported
every 10 feet (3 meters) or less. Horizontal
pipe lengths must be supported every 5
feet (1.5 meters) or less. (Fig.8)
7. Elbows and Tees are suciently supported
by attaching a wall support within 1" to 12"
of the pipe joint holding the Elbow or Tee.
(Fig.8)
8. Vertical components can be insulated in
unconditioned space or when run outside.
Use mineral wool or housing insulation.
9. Use black UV protected components on
venting installed on the outside.

10
Horizontal Twin Pipe (Fig.11)
1. Locate penetration.
2. Cut and frame hole. (Table 3)
3. Attach Interior Wall Plate to interior wall.
4. Attach and seal Exterior Wall Plate to
exterior wall.
5. Slide pipes through outer plate.
6. Rotate pipes to slide pipe past keyway.
7. Slide Exhaust Tip into exhaust pipe.
8. Mount Outer Cover Plate to exterior wall
plate.
9. Install Poly Pro venting system from
appliance to termination.
Lochinvar / IPEX twin plate termination
connector- 2" installation (Fig.12)
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.
Lochinvar / IPEX twin plate termination
connector- 3" & 4" installation (Fig.13)
1. Slide PolyPro Pipe w/ PVC adapter into
small hole of retaining plate until it stops
on the adapter collar.
Figure 11
POSITIONED
HORIZONTALLY
POSITIONED
VERTICALLY
AIR INLET PIPE
OUTER COVER PLATE
APPLY BEAD OF SILICON SEALANT
AROUND FEMALE END OF PIPE TO
SEAL AGAINST EXTERIOR WALL PLATE
INTERIOR
WALL PLATE
EXTERIOR WALL PLATE
EXHAUST TIP
EXHAUST PIPE
Figure 12
BRACKET
POLYPRO PIPE
W/PVC ADAPTER
SUPPLIED WITH
TERMINATION KIT
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.
Figure 13
POLYPRO PIPE
W/PVC ADAPTER
SUPPLIED WITH
TERMINATION KIT

Stainless Horizontal (Fig.14)
1. Cut opening in the wall.
2. Add Trim Plates and Locking Clamp/
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 and deburr. Seal
pipe to Exterior Plate. Slide Bird screen
over cut pipe end and tighten clamp.
Vertical single pipe (Fig.15)
1. Follow instructions for Vertical
Concentric Termination on page 16.
2. Attach Flashing to roof. (Fig.15)
• Use a 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.16
Multiple PolyPro vent systems may be
installed within one conduit, including
but not limited to masonry or factory-built
chimneys. Listed 2"-4" components must
11
CUT LINE
THROUGH HOLE SIZING
4PPS: 4.125" 5PPS: 5.25"
6PPS: 6.125" 8PPS: 8.00"
EXTERIOR TRIM PLATE
INTERIOR TRIM PLATE
PP PIPE
INITIAL
FINAL
BIRD
SCREEN
CLAMP
FLANGES
Figure 14
BLACK
UV PROTECTED PIPE
RUBBER FLASHING
Figure 15- Vertical Pipe Termination
BIRD GUARD
be used, the conduit cannot be in use for
another appliance, 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"
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.
RIGID BLACK
UV PROTECTED
POLYPRO
GASKET
PLATE
STAINLESS
RELINE
HANGER
BRACKET
RIGID
POLYPRO
STAINLESS
UPPER
SUPPORT
PLATE
GASKET PLATE
/ HANGER
MOUNT
HARDWARE
FLANGE
Figure 16
CLEARANCE
HOLE
1.75" MAT'L
SPACE MIN

The Upper Support Plate (with a ange for
BVent and factory built chimney, Fig.17)
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.17). Use non-
hardening sealant as required.
The lower portion of the vent system must
be supported and restopped per applicable
DuraVent instruction.
If there are multiple osets in the conduit
or a rigid Polypro install proves to be too
challenging, PolyPro Flex is an acceptable
replacement in the US. Refer to PolyPro Flex
installation instructions for details on how to
install.
Figure 17
HANGER
MOUNTED
TO TOP OF
SUPPORT,
BELOW
GASKET
PLATE
SEAL AS
REQ'D
12

13
POLYPRO CONCENTRIC
JOINT CONNECTIONS
Install all sections of Concentric PolyPro
venting with the female gasketed ends
pointing away from the appliance and
towards the termination. Secure the joints by:
1. Verify the gasket is seated evenly inside
the groove.
2. Insert the male end of the pipe into the
female end. Ensure you have a minimum
of 1.2in (30.5mm) of vent overlap.
3. Use the two provided self-tapping
screws to secure the outer vent sleeves
at the joint, 3/4in from the edge and on
opposite sides of the pipe. (Fig.18)
APPLIANCE CONNECTION
Begin assembling your vent install at the
appliance ue outlet. If necessary, use an
approved appliance adapter to transition
from the appliance outlet to DuraVent
Concentric PolyPro venting. (Fig.19)
Use only the provided DuraVent
self tapping screws, these screws
have the correct length. Using
screws with a longer length will
damage the PolyPro vent.
1.2"
.75"
Figure 18
PP CONCENTRIC
VENT PIPE
PP CONCENTRIC
VENT PIPE
PP CONCENTRIC
VENT PIPE
APPLIANCE
ADAPTER*
COLINEAR
ADAPTER
APPLIANCE
ADAPTER* APPLIANCE
ADAPTER*
COLINEAR
ADAPTER
POLYPRO
VENT PIPE
*CHECK THE APPLIANCE INSTALLATION
INSTRUCTIONS TO SEE IF AN ADAPTER IS REQUIRED.
Figure 19

14
INSTALLATION
1. Certain Concentric PolyPro vent pipe may
be cut to length. On the vent sections
where this is allowed, a label specifying
"Can be cut. This end only" will be placed
on the male end. If the vent section does
not have this label then DO NOT cut the
pipe.
Follow these steps to cut:
• Mark where along the outer sleeve
where you intend to cut. Make sure
the mark is square (not at an angle)
to the end of the pipe.
• Use a hack saw with a metal cutting
blade and cut along the mark
through only the outer sleeve.
• Mark the inner sleeve so it is 1/4in
(7mm) to 1/2in (14mm) longer than
the outer. Cut along the mark.
• Remove burrs on the inner and
outer sleeves before assembly.
2. Check with appliance manufacturer for
any restrictions or limits on vent length,
number of elbows, etc.
3. All vent pipes must have a minimum
slope of at least 1.8° (3/8in rise per ft
run, 31mm rise per meter run) back to
the appliance. Ensure there are no dips
in the system where condensate can
collect. (Fig.20)
4. The venting system shall be securely
supported using suitable hangers.
DuraVent hardware is recommended
however eld supplied support hardware,
such as all-thread or plumbers tape,
approved by the AHJ is acceptable.
Hardware must be xed to a rigid surface
such as a wall, stud, or framing, and must
not deform or damage the vent (Fig. 20
and 21). Make sure the load of the vent
system is not supported by the appliance.
• Vertical vent sections must be
supported with Wallstraps every
6.5ft (2m) or less. (Fig.21)
3/8IN
31MM
MIN
12IN
1M
MIN
TO APPLIANCE
Figure 20
Figure 21
4IN
100MM
MAX
3.25FT
1M MAX
6IN
150MM MAX
6.5FT
2M
MAX
Figure 22
4IN 100MM
MAX
4IN 100MM
MAX

15
• All other vent orientations
(horizontal, 45°, ect) must be
supported with a Wallstrap at
every joint within 6in (150mm) of
the female end. Maximum space
between Wallstraps is 3.25ft (1m).
• Elbows and Tees must be supported
by a Wallstrap within 4in (100mm)
after the Elbow or Tee section.
(Fig.22)
• 3/8"-16 or greater all-thread rod
may be used as an extension with
DuraVent Wallstraps.
5. Concentric Polypro adjustable vent pipe
must be secured with the provided sheet
metal screws at the sliding joint as well as
at the male and female ends of the vent
pipe. Adjustable sections can extend from
a minimum of 11in (280mm) length to a
maximum of 15.5in (393mm) length.
6. Polypro Concentric can be insulated in
unconditioned space or when run outside.
Use mineral wool or housing insulation.
TERMINATIONS
Horizontal Concentric Pipe (Fig.23)
1. Locate the penetration in the wall. Measure
the intended path of the installation and
make sure you have all the necessary vent
lengths and components to complete the
install.
2. Cut and frame the penetration following
the dimensions in Table 3.
3. Center the Interior Wall Thimble Plate to the
wall penetration and secure with the four
provided screws.
(Fig.23)
4. Attach the Exterior Wall Thimble Plate to
the Horizontal Vent Termination. Insert
the assembly through the Interior Wall
Plate from the exterior of the building.
If necessary, cut the male end of the
termination to the length needed for the
install.
5. Center the Exterior Wall Plate to the wall
penetration, use water resistant sealant or
caulking on the exterior plate to prevent
APPLY BEAD OF
SILICON SEALANT
EXTERIOR WALL
THIMBLE PLATE
INTERIOR WALL
THIMBLE PLATE
Figure 23
rain intrusion. Secure the Exterior Wall
Plate in place using the provided screws.
(Fig.23)
6. Vent termination should be installed ush
against the Exterior Wall Plate. Orient the
termination so the air intake slots face
downward to prevent rain intrusion. Secure
the termination orientation using screws at
the joint connection.
7. Seal the gap between the termination and
wall thimble, exposed screw heads, and the
edges of the exterior wall thimble plate
with water resistant sealant or caulking.
8. Assemble any remaining sections between
the termination and the appliance.
• If using a PolyPro Single-Wall to
PolyPro Concentric adapter, install
gaskets as shown in Fig.24 before
connecting to the vent pipe.
• Assemble the PolyPro Single-Wall
venting according to the DuraVent
PolyPro Single-Wall instructions
beginning on page 7.

Figure 26
EXHAUST AIR INLET
Figure 27
TERMINATION
CAP
FLASHING
STORM COLLAR
SUPPORT CLAMP
Figure 25
CENTERLINE OF
EXHAUST OUTLET
OF APPLIANCE
• On a pitched roof, install the Flashing
with the upper edge under the
existing roong material. Center the
Flashing over the roof framing. Then
seal and nail the Flashing into place
along the upper edge and down
each side with 1" roong nails. Do not
nail the lower edge of the Flashing.
Seal the top and upper sides of the
Flashing, and all exposed nail heads
with roong compound or sealant.
• On a at roof, nail and seal the
Flashing on all sides with roong
compound. Do not put screws
through the Flashing into the vent
pipe. Follow all local building practices
as needed.
Vertical Concentric (Fig.27)
1. Locate the penetration in the roof
(
Fig.25) . Measure the intended path of the
installation and make sure you have all the
necessary components to complete the
install.
2. Cut and frame the roof penetration
following the dimensions in Table 3. Make
sure no debris falls into the appliance
intake or outlet.
3. Use the appropriate roof ashing for
the roof type. On a pitched roof, use the
Adjustable Flashing for 0/12 to 5/12 pitch
and the Steep Roof Flashing for 5/12 to
12/12 pitched roofs. On a at roof, use the
aluminum Flat Roof Flashing.
16
Figure 24
SCREW TO
TERMINATION
AIR INTAKE
EXHAUST
COLINEAR
ADAPTER
INSTALL
GASKETS
EXTERIOR
WALL PLATE
INTERIOR
WALL PLATE
HORIZONTAL
TERMINATION

17
4. Insert the Vertical Termination or next
section of vent through the Flashing and
attach to the already installed venting.
If you need a taller termination due to
clearances or snowfall, use a Vertical
Termination Extension,
Fig.28. Note: The
Vertical Termination Extension increase
the termination height by 36", you will
need to account for this 36" excess
when calculating how much PolyPro
Concentric pipe you will need for your
install.
• If using a PolyPro Single-Wall to
PolyPro Concentric adapter, install
gaskets as shown in Fig.24 before
connecting to the vent pipe.
• Assemble the PolyPro Single-Wall
venting according to the DuraVent
PolyPro Single-Wall instructions
beginning on page 7.
( Fig.26)
5. Attach the supplied support clamp around
the termination and ensure the Vertical
Termination is plumb using a level before
tightening and securing the clamp to a
rigid surface.
6. Apply a continuous ring of non-hardening
sealant around the vent at the point where
the Storm Collar will meet the chimney just
above the ashing. Slide the Storm Collar
down over the chimney to the top of the
ashing. Seal the Storm Collar to the vent
pipe with sealant.
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.
- Check for soot deposits within the venting
system and remove any accumulation with
a soft brush. Ensure the appliance is running
properly to prevent further soot buildup.
- Where practical, inspect joints to verify
that no pipe sections or ttings have been
disturbed, and consequently loosened.
Also check mechanical supports such as
wallstraps, support plates, etc for rigidity.
ø10 mmS13
Figure 28
VERTICAL
TERMINATION
EXTENSION

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PolyPro® is a registered trademark of DuraVent, Inc.
All rights reserved, ©2019
Customer Service Support: 800-835-4429 • 707-446-4740 FAX www.duravent.com
L273_820016825_Install Instructions_PolyPro_12-18-19_V2
POLYPRO WARRANTY
DuraVent, Inc. ("DuraVent") provides this warranty for PolyPro® for ten years. Subject to the limitations set forth below, DuraVent warrants
that its products will be free from defects in material or manufacturing, if properly installed, maintained and used. DuraVent products are fully
warranted if installed only by a professional installer. This Warranty is transferable from the original homeowner to the buyer of the home
within the warranted ten years. This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney res, acts of
God, or any product that was: (1) purchased other than from an authorized DuraVent dealer, retailer or distributor; (2) modied or altered; (3)
improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the installation instructions included
with the product as determined by DuraVent.
Installation instructions are available online at www.duravent.com under Support/Literature and through our Customer Service Department
800-835-4429 or customerser[email protected].
DuraVent provides the following warranties for PolyPro: One Hundred Percent (100%) MSRP 10 years from the date of purchase.
All warranty obligations of DuraVent shall be limited to repair or replacement of the defective product pursuant to the terms and conditions
applicable to each product line. These remedies shall constitute DuraVent’s sole obligation and sole remedy under this warranty. This warranty
provides no cash surrender value. The terms and conditions of this warranty may not be modied, altered or waived by any action, inaction or
representation, whether oral or in writing, except upon the express, written authority of an executive ocer of DuraVent.
This product is intended for venting only category II & IV appliances burning Natural Gas, Propane and Oil. All other fuels are not covered under
this warranty.
LIMITATIONS ON POLYPRO INTERNET SALES: Notwithstanding any other terms or conditions of this PolyPro Warranty, DuraVent provides no
warranty for PolyPro® if it is not installed by a qualied professional installer.
DuraVent must be notied and given the opportunity to inspect defective product prior to replacement under the terms of this limited lifetime
warranty. All warranty claims must be submitted with proof of purchase. Labor and installation costs are not covered under this warranty. To
obtain warranty service contact: DuraVent Warranty Service, 877 Cotting Ct., Vacaville CA 95688, or call 800-835-4429.
WHERE LAWFUL, DURAVENT DISCLAIMS ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL DURAVENT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR SPECIAL
DAMAGES OR DIRECT OR INDIRECT LOSS OF ANY KIND, INCLUDING BUT NOT LIMITED TO PROPERTY DAMAGE AND PERSONAL INJURY. DURAVENT’S
ENTIRE LIABILITY IS LIMITED TO THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES DO NOT ALLOW LIMITATIONS ON IMPLIED WARRANTIES, OR
THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO
YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE.
For the most up-to-date installation instructions, see www.duravent.com