M&g Duravent polypro User manual

PolyPro

Installation Instructions

PolyPro Single-Wall 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. 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:

[email protected]

• Examine all components for possible

shipping damage prior to installation

• Proper joint construction is essential

for a safe installation. Follow these

instructions exactly as written.

• This venting system must be free to

expand and contract.

• This venting system must be supported

in accordance with these instructions.

• Check for proper joint construction

when joining pipe to ttings.

• Check for unrestricted vent movement

through, walls, ceilings, and roof

penetrations.

• Dierent manufacturers have dierent

joint systems and adhesives. Do not mix

pipe, ttings or joining methods from

dierent manufacturers.

WARNING

IMPORTANT

Risk of carbon monoxide poisoning

or re due to joint separation or pipe

breakage.

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 aect your homeowner’s

insurance and safety listing of your appliance.

Keep these instructions for future

reference.

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

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.

PolyPro Single-Wall Gas Vent System

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

PolyPro

CONTENTS

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

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 4

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

EQUIPMENT AND MATERIALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . 4

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

JOINT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . 6

INSTALLATION . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 8

HORIZONTAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ELBOW OR TEE TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

VERTICAL TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

CONDENSATE DRAIN . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .15

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

APPLICATION

M&G DuraVent’s PolyPro vent pipe is a single-

wall polypropylene gas vent for use with ANSI

Category II and IV gas-burning appliances.

PolyPro is listed by Intertek to the ULC S636

standard in Canada and is rated as a Class IIA,

IIB, and IIC vent system suitable for exhaust

temperatures up to 230°F (110 °C), and a

maximum positive pressure of 15 in-w.c.

Check with your appliance manufacturer or

look in the appliance installation instructions

to verify that M&G DuraVent’s PolyPro Vent is

allowed for use with your appliance. PolyPro

is approved by the Massachusetts Plumbers

Board, Approval G1-0811-42.

CLEARANCES

PolyPro single-wall vent system is listed at

0" clearance to combustibles for exhaust

temperatures up to 194°F (90 °C). In addition,

PolyPro single-wall vent system is listed

for exhaust temperatures up to 230°F

(110°C) with 0" clearance for vertical vent

installations, and 1/4" (6mm) clearance

for horizontal vent installations. PolyPro

Concentric vent system parts, including the

concentric Horizontal Termination and the

Vertical Termination, are listed at 0” clearance

to combustibles for exhaust temperatures

up to 230°F (110 °C) for both vertical and

horizontal installations. Refer to Table 1.

Check with your appliance manufacturer if

larger clearances are required. Do not ll any

air space clearances with insulation.

PERMITS

Before installation, check with your local

Building Ocial, Fire Ocial, or other

authority having jurisdiction regarding

permits, restrictions, and installation

inspections in your area.

EQUIPMENT AND MATERIALS

Hammer

Drill

Pliers or Channel Locks

Caulking Gun

Plumb Bob

Screwdrivers (Phillips & Standard)

Tin Snips

Saber or Keyhole Saw

Level

Dependable Ladder

Tape Measure

Proper Gloves and Shoes

Eye Protection

Materials You May Need:

500 RTV Silicone Sealant (used to seal

exterior building penetrations to protect

against weather)

8 Penny Nails

#8, 1-1/2” Wood Screws

Roong Nails

GENERAL INSTALLATION NOTES

Read through these installation instructions

before beginning your installation. A

properly listed installation is dependent

upon installing the vent in full compliance

with these installation instructions. Proper

planning for your PolyPro vent system

installation will result in greater safety,

eciency, and convenience, as well as

saving time and money. You must use only

authorized M&G DuraVent PolyPro vent

parts, or other parts specically authorized

in these instructions and 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

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)

Concentric

Up to 230°F 0" 0"

1-ft Vent Pipe 1-ft

1-ft Flex Pipe 2-ft (same Dia as

rigid)

1-ft Flex Pipe 0.6-ft (upsized one

Dia)

45 Elbow 3-ft

90 Elbow 6-ft

Tee 6-ft

improvised solutions. Do not install damaged

or modied parts. Do not use any solvents or

adhesives with PolyPro pipe, other than as

specied in these instructions. Practice good

workmanship. Sloppy work could jeopardize

your vent’s safety. Keep electrical wiring and

building insulation away from all chimneys

and vents. When deciding the location of

your installation, try to avoid modications

to structural components of the building. 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.

Refer to the appliance manufacturer for the

maximum and minimum allowed vent runs

for your specic appliance model, including

maximum number elbows allowed in the

system, and for the pressure drops and

equivalent length of the ttings. The total

vent length from the appliance to the

termination shall not be greater than what

is specied by the appliance manufacturer.

Absent specic equivalent length info

for vent ttings from the appliance

manufacturer, the following general

guidelines can be used:

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.

IMPORTANT

To prevent possible recirculation of

ue gas, the installer must take into

account the eects such as the prevailing

wind conditions, any eddy zones,

environmental conditions, etc. when

planning both the exhaust and air supply

systems.

M&G DuraVent can not be held

responsible for potential detrimental

eects on appliance operation or to the

building due to incorrect installation or

failure to plan for the specics needs of

the installation. The clearances detailed

or illustrated should be seen as the

absolute minimum and may in some

circumstances not be adequate for

specic installations. For this reason we

always recommend vertical venting.

Equivalent Length Chart

Component Equivalent Length

1-ft Vent Pipe 1-ft

1-ft Flex Pipe 2-ft

(same diameter as rigid)

1-ft Flex Pipe 0.6-ft

(updsized one diameter)

45 Elbow 3-ft

90 Elbow 6-ft

Tee 6-ft

Plan the layout of the vent system:

Consider the length of horizontal runs,

elbows, clearance requirements, and location

of terminations.

For horizontal vent runs, always maintain

at least a 5/8” rise per foot (50mm rise per

1m) away from the appliance to prevent

collection of condensate or buildup of heat

in the vent.

Consider condensate drainage. Refer to

the appliance manufacturer’s installation

instructions for requirements of

condensate drainage.

Normal operation of gas burning appliances

does not result in deposits of combustible

soot in venting systems. However, a poorly

rotate 360-degrees to allow elbows to point

in the desired direction. The PolyPro vent

pipe lengths may be cut to achieve specic

lengths. Alternatively, an Adjustable Pipe

adjusted or malfunctioning appliance

can deposit soot and other debris which

can enter the vent system. Any such

accumulation should be removed and the

appliances adjusted to eliminate future

accumulation. Use only a soft brush for

cleaning the sections and ttings. If any

leakage is found at joints the connected

appliances should be turned o and the

leaks repaired. 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.

JOINT CONNECTIONS

M&G DuraVent’s PolyPro vent is connected

together by slipping the male pipe end into

the female end (Figure 1) with about 2"

(50mm) of overlap. PolyPro vent products

have gaskets installed in the female pipe

ends. Before connecting the vent pipe

sections or components, verify the gasket

is seated evenly inside the groove in the

female end. The PolyPro joint section can

WARNING

CARBON MONOXIDE POISONING

HAZARD. FAILURE TO FOLLOW THESE

INSTALLATION INSTRUCTIONS COULD

RESULT IN PERSONAL INJURY OR

DEATH.

Figure 1

VERIFY GASKET IS

SEATED IN FEMALE

END OF PIPE

MALE END

FEMALE END

length that slips into the previous vent

pipe section is also available. Screws are

not allowed for joint connection. Never

penetrate the wall of PolyPro vent pipe

sections.

A Locking Band is required at every exhaust

vent joint, and optional for the air inlet vent

joints. To attach the Locking Band, slide it

over the male end of the pipe with the hook

and leg facing the joint. Push the male and

female ends together as described in these

instructions, and snap the hook in place over

the ared female end. To release the Locking

Band, pry the hook up. If the Locking Band

is installed at a joint where the Wall Strap

is used, align the Locking Band's hook with

the gap of the Wall Strap. The Locking Band

meets ULC S636 requirements for securing

the joint. In addition, supporting Wall Straps

are required at least every 10 feet (3 meters)

for vertical vent pipe sections, and horizontal

or sloped sections of vent pipe require one

supporting Wall Strap for each pipe section.

(Figure 2).

There are two options for Wall Straps: the

polypropylene snap-clamp style, and the

metal bolt-clamp style. (Figure 2, 3A & 3B)

Both options are approved and listed for

use with PolyPro. The polypropylene Wall

Strap can be attached at either the female

end of the pipe or on the body of the vent

pipe. Determine the location where the Wall

Strap’s anchor bolt will mount into the wall

or framing member. Mount the anchor bolt

into the wall at that location. Install the body

of the Wall Strap onto the anchor bolt by

rotating the body of the Wall Strap with the

encapsulated nut, onto the threads of the

anchor bolt. Do not over tighten. When the

PolyPro vent is in place, secure the Wall Strap

around the vent pipe by closing the clamp.

The metal Wall Strap can only be mounted

on the body of the vent pipe. Slide the metal

Wall Strap around the body of the PolyPro

vent pipe, or open the clamp to wrap around

the pipe. When the vent pipe is in place,

secure the metal Wall Strap to the nearby

CAUTION

Caution: Do not use grease or other

lubricant on the vent seals. Only water

may be used for this purpose. Grease or

other lubricant can make the seal brittle

or it can result in tears in the surface of

the seal, this will result in ue

gas leakage.

Figure 2

ALTERNATE

WALL STRAP

DESIGN

AVAILABLE

WALL STRAP ACTING AS

SUPPORT WITH ANCHOR

BOLT MINIMUM 1P ER

HORIZONTAL PIPE SECTION

LOCKING BANDS

REQUIRED AT EVERY

EXHAUST JOINT

MAX

10FT

3m

Figure 3A

PUSH DOWN TO

ENGAGE LOCK

PRY OUT

TO UNLOCK

Figure 3B

ALIGN HOOK TO GAP WHEN

INSTALLING AT JOINT WITH

WALL STRAP

SECURE ANCHOR BOLT

TO NEARBY WALL OR

STRUCTURAL MEMBER TO

SUPPORT VENT SYSTEM

WALL STRAP CAN BE

INSTALLED ON FEMALE END

OR BODY OF PIPE

ALIGN WALL STRAP WITH

KEYWAY WHERE INSTALLED

ON FEMALE END

wall or structural member using (2) 1-1/2” #8

wood screws or equivalent. Secure the Wall

Strap around the vent pipe by tightening the

nut and bolt of the clamp.

INSTALLATION

1. Connect PolyPro vent pipe to the

appliance. Use the Appliance Adapter/ PVC

Adapter and Clamp to connect PolyPro vent

to the appliance. Slide the male end of the

Appliance Adapter into the appliance outlet.

Place the Appliance Adapter Clamp over

the Appliance Adapter and then slide the

male end of the PolyPro vent pipe into the

Appliance Adapter. Tighten both hose clamps

on the Appliance Adapter Clamp to ensure

the connection is secure (Figure 4).

If the appliance has a rubber boot or Fernco-

style appliance adapter on its outlet, then the

PolyPro vent pipe may attach directly to the

rubber coupler adapter or Fernco adapter

without needing the Appliance Adapter,

by tightening the clamping bands (Figure

4A). Additionally, the Appliance Adapter/

PVC Adapter can be used to transition from

PVC vent pipe to PolyPro, if needed. Install

the vent pipe system with the female end

(with the internal gasket) up, away from

the appliance. The Appliance Adapter is

designed to provide a drip-free connection

for most appliance outlets. If the appliance

has a PVC union for its outlet, the Appliance

Adapter also functions as a PVC Adapter to

transition from PVC to PolyPro pipe (Figure

4). The PVC Adapter requires a standard

PVC union to make the transition to PolyPro

pipe; if a straight length of PVC pipe is on

the appliance outlet, add a PVC union before

connecting the Appliance Adapter. Secure

the connection by tightening the hose

clamps on the Appliance Adapter Clamp.

2. Check that the gasket is retained correctly

in the groove.

3. Add additional sections of PolyPro vent

APPLIANCE

OUTLET

POLYPRO

VENT PIPE

TIGHTEN CLAMPS ON

RUBBER COUPLER

ADAPTER OR FERNCO

STYLE ADAPTER TO

SECURE VENT

PIPE TO APPLIANCE

Figure 4A

pipe for your installation. Be sure to check

with your appliance manufacturer for any

restrictions or limits on vent length, number

of elbows, etc.

4. If PolyPro vent pipe needs to be cut, be

sure that the vent is cut square (not at an

angle) to the end of the pipe and that burrs

are removed before assembly.

5. Take precautions with horizontal

installation, the slope of the vent pipe must

Figure 4

POLYPRO PIPE

APPLIANCE

ADAPTER CLAMP

APPLIANCE

ADAPTER/PVC

ADAPTER

APPLIANCE

EXHAUST

OUTLET OR

PVC UNION

ALIGN WALL

STRAP WITH

KEYWAY WHERE

INSTALLED ON

FEMALE END

APPLIANCE

Figure 6

be at least 5/8" rise per foot (50mm rise per

1m) away from the appliance, (Figure 5).

6. For each vent joint, a Locking Band is

needed. Refer to the Joint Connection section

above. Additionally, Wall Straps are required

to support the overall vent run. To support

the vent run, mount Wall Straps on a nearby

wall

or other xed structure of the building:

6a. Straight vent sections that are installed

vertical must be supported with Wall Straps

every 10 feet (3 meters) or less, (Figure 2).

6b. Straight vent sections installed with a slope

must be supported with at least one bracket

per section.

6c. Elbows and Tees are suciently supported

when a bracket is xed at the female end of the

connected straight section as described in 6b.

7. To make installation easier, it is

recommended to rotate the joints slightly

when assembling them. If needed, only

use water to lubricate the gaskets for easier

assembling.

8. Make sure that the load of the vent system is

not supported by the appliance.

9. Because of the elongation at high exhaust

temperatures the pipes must be inserted and

joined according to Figure 6. The allowed

length of elongation must be between ¼” and

5/8” (7.5 - 15 mm) per joint.

10. Continue with either the Horizontal

Termination Section or the Vertical Termination

section, depending on your installation.

HORIZONTAL TERMINATIONS:

For PolyPro vent systems ending in a

horizontal termination, follow these steps:

1. Determine your location through the wall.

Verify your location meets the requirements

for horizontal terminations as described

in all applicable building codes and your

appliance’s installation instructions. In the US

Figure 5

12"

5/8"

MIN

be sure to comply with NFPA 54/ANSI Z223.1

National Fuel Gas Code or the International

Fuel Gas Code. In Canada, comply with CAN

/CGA-B149.1 Natural Gas Installation Code

or CAN /CGA -149.2 Propane Installation

Code. In addition to meeting applicable

building codes and appliance manufacturer

requirements, M&G DuraVent requires at

least 12" of separation between the air inlet

and exhaust. However for specic appliance

recommendations please refer to the OEM’s

Installation Instructions. This does not apply

to Twin Pipe and Concentric Terminations.

2. Determine which horizontal termination

you will use. PolyPro oers three dierent

engineered terminations to handle dierent

installation situations: concentric Horizontal

Termination, the Twin Pipe Termination,

and the Single Horizontal Termination. In

addition, PolyPro vent can also be terminated

using black, UV-resistant pipe, elbows, or a

tee as described below.

The concentric Horizontal Termination

(Figure 7) is specically designed and

1/4"  5/8"

7.5mm  15mm

engineered to handle wind loads and

backpressure. Refer to Table 2 for the size of

the hole in the wall needed for the dierent

diameter terminations.

The Twin Pipe Termination is a side-by-side

(collinear) vent system for the exhaust and

the air inlet (Figure 8). For the Twin Pipe

Termination, the penetration must be either

two holes for each of the exhaust and air

inlet pipes or a rectangular opening to

handle both. Clearance to combustibles is

only required on the exhaust side of the Twin

Pipe Termination. Refer to Table 2 for hole

sizes. Remember to maintain the necessary

clearance to combustibles. The Twin Pipe

Termination can be positioned in either a

horizontal (side-by-side) or vertical (one pipe

above the other) orientation (Figure 8).

The Single Horizontal Termination can be

used for the appliance’s exhaust if a vented

air inlet is not required for your appliance

(Figure 9). Refer to Table 2 for the necessary

hole size through the wall. Remember

to maintain the necessary clearance to

combustibles.

3. Once you have determined the type of wall

termination, selected the location and cut the

hole as described, then install your horizontal

termination as follows:

Concentric Horizontal Termination: Slide

the Exterior Wall Plate over the exterior end

of the Concentric Horizontal Termination

until it stops. From the outside, slide the

Termination through the wall penetration

until the Exterior Wall Plate reaches the wall

(Figure 10). The Exterior Wall Plate helps to

hold the Termination in place and ensures

the Concentric Horizontal Termination is

in the correct position for proper wind

performance. If needed for your installation,

the interior end of the Concentric Horizontal

Termination can be cut to length, as long as it

extends through the wall. Be sure to remove

any burrs after cutting. The Concentric

Horizontal Termination must be installed

either level or with a maximum downward

pitch of 1/8” per foot (10 mm per meter) away

from the appliance. To prevent rainwater

from entering the air inlet system, ensure

the Termination is installed correct side up

(Figure 7). Using RTV silicone sealant, mount

and seal the Exterior Wall Plate to the wall

and secure it with the hardware provided. On

the interior wall, slide the Interior Wall Plate

over the Concentric Horizontal Termination

and secure to the interior wall with supplied

hardware. Then secure the Interior Wall

Plate to the Termination pipe itself using the

Table 2

PolyPro Wall Penetration Sizing Table

VENT DIAMETER

Termination 2" 3" 4"

CONCENTRIC HORIZONTAL

(ROUND OR SQUARE)

4 ⁄"

105mm

5 ⁄"

130mm

6 ⁄"

155mm

TWIN PIPE HORIZONTAL

CLASS IIB

7 ⁄" x 2⁄"

187mm x 65mm

8 ⁄" x 3⁄"

212 x 85mm

9" x 4⁄"

228 x 100mm

TWIN PIPE HORIZONTAL

CLASS IIC

8" x 3"

200 x 77mm

8 ⁄" x 3⁄"

225 x 98mm

9 ⁄" x 4 ⁄"

238 x 112mm

SINGLE HORIZONTAL (ROUND OR SQUARE)

CLASS IIB \ CLASS IIC

2⁄" / 3"

65mm / 77mm

3 ⁄" / 3 ⁄"

85mm / 98mm

4" / 4 ⁄ "

100mm / 112mm

supplied sheet metal screws through the

four tabs on the wall plate. Once in place, the

Horizontal Termination should not be able to

move. If the appliance requires a two-pipe

system (exhaust and air inlet) then you will

need to connect the Collinear Adapter that

came with the Termination. For the Collinear

Adapter, assemble the two gaskets that came

with the Adapter. Verify the exhaust side is

the side that passes through the Collinear

Adapter and the air inlet side connects to the

o center stub on the Adapter (Figure 10).

Twin Pipe Termination: Mount the Exterior

Wall Plate of the Termination on the outside

wall, using RTV silicone sealant between the

plate and the wall to prevent rain inltration

(Figure 11). Secure the back plate in place

with (4) 1-1/2” wood screws or appropriate

hardware for your exterior wall. From the

outside, apply a bead of silicone sealant

around the female end of the pipe where the

plate will meet the ared end (Figure 11).

This is needed to weatherize the connection.

Then slide the two PolyPro vent pipe section

into the holes of the Exterior Wall Plate

(male end rst). Twist the pipe so the female

end’s keyway slides past the Exterior Wall

Plate as shown. If needed, the PolyPro vent

pipe sections can be cut to length for your

Figure 7

INTERIOR WALL

PLATE

EXTERIOR WALL

PLATE

CONCENTRIC

HORIZONTAL

TERMINATION

Figure 8

POSITIONED

HORIZONTALLY

POSITIONED

VERTICALLY

Figure 9

INTERIOR

WALL PLATE EXTERIOR

WALL PLATE

GASKET

SINGLE

HORIZONTAL

TERMINATION

Figure 10

COLINEAR

ADAPTER

EXHUAST

APPLIANCE

AIR INLET

CONCENTRIC

HORIZONTAL

TERMINATION

section through the Exterior Wall Plate

and align the mounting holes of the vent

pipe with the tabs of the Exterior Wall Plate

(Figure 12). Secure the termination vent

to the wall plate’s tabs with the black sheet

metal screws provided. Do not over-tighten

the screws. Add RTV silicone sealant around

the perimeter of the wall plate for weather

protection. Mount the Exterior Wall Plate

to the exterior wall with (4) 1-1/2” screws or

other hardware appropriate for your wall. If

you live in an area where icing is a concern,

be sure to orient the Single Horizontal

Termination so it is pointed upward. This will

prevent icicles from forming on the end of

the cap and will allow rain to enter the vent,

thereby diluting the acidic condensate.

Figure 12

IMPORTANT

If the cap is installed so rain can enter the

cap, a condensate drain with a U-bend

or P-trap made of corrosion resistant

material must be used in the vent system

and/or the appliance must be able to

manage the condensate as directed in

the appliance manufacturer's installation

instructions.

Figure 11

installation. On the exhaust vent, attach

the termination nozzle, and orient it so the

protruding edge is at the top of the exhaust

vent. Put the Outer Cover Plate over the vent

pipe, with the exhaust nozzle extending

through the Outer Cover Plate, and the air

inlet being covered by it. The Outer Cover

Plate will hold both the air inlet vent and the

exhaust vent in place. Secure the Outer Cover

Plate to the Exterior Wall Plate using the

hardware supplied. On the inside wall, mount

the Interior Wall Plate to the wall and secure

with hardware supplied.

Single Horizontal Termination: Mount

the gasket material into the black-painted

Exterior Wall Plate. If needed, the termination

vent pipe can be cut depending on your

wall thickness. Slide the termination vent

INTERIOR WALL

PLATE

EXTERIOR WALL

PLATE

EXHAUST PIPE

OUTER COVER

PLATE

AIR INLET PIPE

APPLY BEAD OF SILICON SEALANT

AROUND FEMALE END TO SEAL

AGAINST EXTERIOR WALL PLATE

ALIGN TABS WITH

MOUNT HOLES

If you are not in an area where icing is a

concern, directing the termination downward

is permissible. On the inside wall, mount the

Interior Wall Plate to the wall and secure with

hardware supplied.

ELBOW OR TEE TERMINATION:

In addition to the engineered horizontal

terminations described above, the installer

may also use UV-resistant, black vent

pipe lengths, elbows, and tees to form a

termination (see Figure 13). Do not use the

gray non-UV protected pipe as a horizontal

termination, except in combination with

the engineered horizontal terminations

described above.

For the terminations, elbows may be

used in either a 45-degree, or 90-degree

conguration. A Tee may also be used as

the termination, but must remain horizontal

as shown in Figure 13. If an air-inlet is part

of the termination, ensure the air-inlet will

not let the exhaust recirculate back into

the system. Make sure the air-inlet will not

have rain entering the system by keeping

the inlet pointing downward. Check with

your appliance manufacturer for additional

termination requirements or restrictions,

and follow all local and national code

requirements for the location of

your terminations.

4. Once the Horizontal Termination is in place,

complete the installation using sections of

PolyPro vent pipe between the appliance and

the Termination. Secure with Wall Straps and

Locking Bands at the joints as described in

the Joint Connection section.

VERTICAL TERMINATIONS:

For PolyPro vent installations ending in a

vertical termination, the vent system must

terminate at least 2 feet above the roof line or

Figure 13

CONDITIONED SPACE

PROVIDE SUPPORT

EVERY 6FT 2m

ALTERNATE

HORIZONTAL TEE

90° ELBOW OR

HORIZONTAL TEE

12" ABOVE GRADE OR

AVERAGE SNOW ACCUMULATION

OUTSIDE WALL

any wall or vertical structure within 10 feet.

• Always secure the Vertical Termination Cap

with its support clamp.

• Do not install anything on top of the

Vertical Termination Cap. The Vertical

Termination Cap is specially designed for

high eciency appliances which produce

large quantities of moisture due to

condensation of combustion gases.

M&G DuraVent has developed a special end cap

that prevents freezing of the condensate at the

termination. This design allows rain to enter the

termination which also serves to dilute acidic

condensate. However, a Condensate Drain must

be incorporated in the vent system to allow

condensation and rainwater to escape from the

venting system. The drain must include a trap

to prevent combustion gases from entering the

living space.

1. Choose the appropriate Flashing in

accordance with your roof. For pitched roofs,

an Adjustable Roof Flashing is available in

either aluminum or polypropylene. For at

roofs an aluminum Flat Roof Flashing is

available. (Figure 14).

2. For each oor level between the appliance

and the roof, determine the location where

the vent will penetrate through. Cut and

frame an opening through that oor level.

Install the vent pipe through the opening

at that oor level. Install the Firestop Spacer

around the vent pipe on the underside of the

oor penetration. Use the enclosed hardware

to secure the Firestop Spacer in place.

3. Determine the location of the roof

penetration. Cut a hole from the exterior of

the roof. Important: Make sure that no dirt or

debris drop into the appliance exhaust or air

intake piping. (Figure 15).

4. Place the Flashing into position on the

roof.

5. Carefully lower the Vertical Termination

Cap down through the Flashing from the

roof. (Figure 16).

6. Verify that the Vertical Termination Cap is

plumb using a level or similar device.

7. Fix the roof clamp (supplied) around the

base of the Vertical Termination Cap and secure

roof clamp to a nearby framing structure. Do

not tighten the clamp yet.

8. Complete the connection between the

Vertical Termination Cap and the appliance

using appropriate PolyPro vent pipe and

ttings.

8a. If the appliance requires only a single

Figure 14

Figure 15

IMPORTANT

Do not turn the cap.

FLAT ROOF

ADJUSTABLE ROOF

FLASHING, ALUMINUM

0/12  5/12 PITCH

ADJUSTABLE ROOF FLASHING,

POLYPROPYLENE 5/12  12/12 PITCH

Figure 16

Figure 17

vent (exhaust) then single-wall PolyPro can

be attached directly to the inner vent pipe

of the Vertical Termination. If the appliance

requires a two-pipe system (exhaust and

air inlet) then you will need to connect

the Collinear Adapter that came with the

Termination. For the Collinear Adapter,

assemble the two gaskets that came with the

Adapter. Verify the exhaust side is the side

that passes through the Collinear Adapter

and the air inlet side connects to the o

center stub on the Adapter (Figure 17).

9. Secure the roof clamp around the Vertical

Termination Cap.

10. With the Vertical Termination in place,

IMPORTANT

Condensate must be managed by

either the appliance or by the use of

condensate drain(s) in the system.

A condensate drain requires a U-bend

or P-trap made of corrosion resistant

material must be used in the vent

system and/or the appliance must be

able to manage the condensate as

directed in the appliance manufacturer's

installation instructions.

WARNING

Follow the appliance manufacturer’s

instructions with regards to the

minimum trap height of the condensate

drain. Insucient height on the trap

can cause the ue gases to be blown out

under a blocked vent condition before

the appliance’s blocked vent detection

system can function.

MAINTENANCE

Have your venting system checked annually

by a qualied serviceman. Recommended

areas to inspect are as follows:

1. 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.

2. Where possible, look into the Termination

Cap to verify no foreign material is there to

block the vent. Remove any foreign material

found.

3. Inspect joints to verify that no Pipe

Sections or Fittings have been disturbed,

and consequently loosened. Also check

mechanical supports such as Wall Straps for

rigidity.

CONDENSATE DRAIN

COLINEAR

ADAPTER

EXHAUST

AIR INLET

PolyPro® and GreenVent® are registered trademarks of M&G DuraVent, Inc.

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

5/2012 L273

POLYPRO WARRANTY

M&G 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 customerservice@duravent.com.

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