DuraVent PelletVent UL 641, PelletVent UL 1777, PelletVent Installation Instructions Manual

PelletVEnt

for Multi-Fuel

Multi-fuel venting system.
UL 641, UL 1777

Installation Instructions

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 PELLETVENT BE INSTALLED ONLY IN

ACCORDANCE WITH THESE INSTRUCTIONS.

LISTED

MH8381

MH14420

NOTE:

Read through all of these instructions before
beginning your installation. Failure to install
as described in this instruction will void the
manufacturer’s warranty, and may have an
eect on your homeowner’s insurance and
UL listing status. Keep these instructions for
future reference. This booklet also contains
instructions for installing a venting system
within an existing masonry chimney, and
for installations passing through a cathedral
ceiling.

Dear Customer, Installer, or End User:

We welcome any comments regarding
matters pertaining to our DuraVent products.
We welcome any ideas, input or complaints
and I’ll make sure that someone responds
directly back to you.
Send your emails to:
[e-mail]

If you are searching for tech support or
product information, please phone us at
800-835-4429.
Or email us at:
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3

CONTENTS

CLEARANCES AND APPLICATIONS . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . 4

VENT LISTING, INSTALLATION NOTES . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . . 4

TOOLS AND EQUIPMENT YOU MAY NEED, PERMITS . . . . . . . . . . . . . . . . . . . . . 5

GENERAL INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION INTO A MASONRY FIREPLACE . . . . . . . . . . . . . . .. . . . . . . . . . . . 9

INSTALLATION THROUGH SIDE OF MASONRY CHIMNEY . . . . . . . . . . . . . . .10

INSTALLATION IN A CATHEDRAL CEILING . . . . . . . . . . . . . . . . . . .. . . . . . . . 13

CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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

PelletVEnt

VENTING SYSTEMS FOR PELLET, OIL AND MULTIFUEL STOVES

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

for Multi-Fuel

4

CLEARANCES AND APPLICATIONS

DuraVent’s PelletVent and PelletVent for
Multi-Fuel is listed by Underwriters
Laboratories as vent for listed oil-, pellet-,
(multi-fuel) appliances. PelletVent is also
listed as a masonry reliner, in which case
the minimum clearance is 0” from vent to
masonry, and 0” clearance from the masonry
to nearby combustibles. Never ll any
required clearance space with insulation
or any other materials. Combustible
materials include (but are not limited to)
lumber, plywood,sheetrock, plaster and
lath, furniture, curtains, electrical wiring,
and building insulation of any kind. In the
United States the minimum clearance to
combustibles from PelletVent is 3” for oil,
pellet or other biofuel applications. A major

cause of vent related res is failure to
maintain required clearances (air spaces)
to combustible materials. It is of the
utmost Importance that double wall pellet
vent be installed only in accordance with
these Instructions.

For other components not listed
(components not in contact with exhaust
gases), use a regular PelletVent component
(examples: Support Boxes, Tee Support
Bracket, Flashing).
Pipe Sections: 6”, 12”, 24”, 36”, 60” lengths
Adjustable Length Pipe
Stovetop Pipe Adapter
45 & 90 Degree Elbows
Single Tee with Clean-Out Adapter
Clean-Out Adapter
Vertical Cap
Round and Square Horizontal Caps
Wall Thimble

VENT LISTING

PelletVent and PelletVent for Multi-Fuel are
listed (listing numbers MH8381 & MH14420)
to the American standard UL 641 Type L Low
Temperature Venting Systems. PelletVent is
also listed to UL 1777.

INSTALLATION NOTES

For the purpose of these instructions,
PelletVent will collectively include PelletVent
and PelletVent for Multi-Fuel, unless
PelletVent for Multi-Fuel is specically called
out. Proper planning for your PelletVent
installation will result in greater safety,
eciency, and convenience,saving both time
and money. Use only authorized DuraVent
PelletVent listed parts. Do not install
damaged parts. When installing multi-fuel
appliance or an appliance that can burn
pellets, use PelletVent for multi-fuel parts as
specied above.

1. WARNING: When passing through
ceilings and walls, make sure all combustible
materials and building insulation products
are a minimum of 3” from the vent pipe.

2. When exiting through walls, make sure
NFPA rules are followed for distance from
windows and openings.

3. Do not mix and match with other products
or improvised solutions.

4. Practice good workmanship. Sloppy work
could jeopardize your PelletVent installation.

5. Never use a vent with an inside diameter
that is smaller than the appliance ue outlet.

6. Multistory: Where PelletVent passes
through the ceiling, use DuraVent Firestop/
Support assembly.

7. PelletVent placement: When deciding
the location of your stove and vent, try to
minimize the alteration and reframing of
structural components of the building.

8. Sections of pipe are connected to each
other by pushing them rmly together and
twisting. Screws are not required. If however,
screws are desired, use 1/4”-long sheet metal
screws. Under no circumstances penetrate
the inner liner with screws.

9. RTV Sealant may be required at all vent
joints. Refer to Appliance manufacturer.

10. Never install single-wall pipe to
freestanding pellet stoves. Single-wall pipe
may be connected to a replace insert,

5

provided it is inside the replace, and the
replace has completely sealed surroundings.

11. Do not connect B-Vent pipe with
aluminum liners to pellet appliances.

12. Inspections: Using pelletized fuel does
not eliminate the need for inspection and
cleaning. During the heating season, inspect
monthly, and clean at least once a year.

TOOLS AND EQUIPMENT YOU
MAY NEED

Eye Protection High-Temperature Waterproof
(RTV) Sealant
Gloves Tape Measure
Screwdriver Saber or Keyhole Saw
Hammer

PERMITS

Contact your local building department or
re ocials regarding any needed permits,
restrictions, and installation inspection
requirements in your area.

GENERAL INSTALLATION
INSTRUCTIONS

PelletVent and PelletVent for Multi-Fuel
are listed with a minimum 3” clearance to
combustibles. Refer to Table 1 for framing
requirements needed for these components.

1. Follow the stove/appliance manufacturer’s
instructions.
A. Choose an appliance that is listed by a
recognized testing laboratory.

B. Connect only one ue per appliance.
C. Follow the appliance manufacturer’s

instructions and safety manual for maximum
eciency and safety. Overring can damage
the appliance and vent.

2. If the vent exit is on top of the stove
(Figure 1):
A. Place the appliance according to the
manufacturer’s instructions.
B. Drop a plumb bob to the center of the
appliance ue outlet and mark center point
on the ceiling, cut a square hole in the ceiling
for the Ceiling Support Firestop Spacer. Refer

to Table 1 for the dimensions of the hole.
C. Connect Pipe Adapter to stove: Attach
each section of pipe by pushing male and
female ends of pipe together and twisting
until pipe is in locked position.
D. When the pipe passes through the Ceiling
Support Firestop Spacer at ceiling, tighten
bolt and clamp around pipe.

E. Always maintain at least 3" clearance
from combustible materials. Where the

chimney passes through additional oors
and ceilings, always install a Ceiling Support
Firestop Spacer.
F. When the PelletVent enters the Attic, install
an Attic Insulation Shield around the vent
(Figures 1 & 3). This will prevent insulation
and debris from collecting near the vent pipe.
Use (4) wood screws to secure the base of the
Attic Insulation Shield to the framed opening.
Adjust the height of the Attic Insulation
Shield by sliding the top cylindrical shield
over the one from the base. Insure that the
top of the Shield is above the level of building
insulation. Secure the Shield in place with at
least two (2) sheet metal screws through the
side of the cylindrical shield. Attach collar
around the top of the Attic Insulation Shield.
G. After lining up for the hole in roof, using
the same method as 2.(B), cut either a round
or square hole in the roof. Always cut the
hole with the proper clearance to sides of
Flashing under the roong materials and nail
to the roof along the upper edge. Do not nail
across the lower edge. Seal all nail heads with
non-hardening waterproof sealant.
H. To nish, apply high-temperature
waterproof sealant where the Storm Collar
will meet the vent and Flashing; slide Storm
Collar down until it sets on the Flashing, put
the Cap on and twist to lock (Figure 2).

3. If the ue exits on back of stove and an
interior installation is desired (Figure 3):
A. Place the appliance according to the
manufacturer’s instructions.
B. Connect a Pipe Adapter to the back of the
stove and attach a Tee to Pipe Adapter, align,

6

push together and twist to lock.
C. Continue to assemble pipe as described in
Step 2.

4. If the ue exit is on the back of stove, and
an exterior vertical installation is desired
Figure 4):
A. Place the appliance according to
manufacturer’s instructions.
B. Cut a square opening in the wall in
accordance with the dimensions in Table

1. The black portion of the Wall Thimble is
to be attached to the interior wall, and the
galvanized portion is to be attached to the
exterior wall. The Wall Thimble adjusts to t
walls from 3”-8” thick (Figure 5).
C. Connect a Pipe Adapter to back of stove;
attach pipe to penetrate wall so vertical
section from Tee will be 3” from the exterior
of the wall. Attach a Single Tee or a Double
Tee with Clean-Out Adapter, and proceed up
the wall. Attach a Tee Support/Wall Strap just
above the tee. A Tee Support/ Wall Strap must
be placed every 4-feet along the vertical run.
Assemble pipe in the same manner described
in Step 2 of the general instructions. If
an Adjustable Length is required in the
horizontal run, and the Adjustable Length
must enter the Wall Thimble, the diameter
of the center hole in the Wall Thimble must
be enlarged by 1/8” to accommodate the
Adjustable Length.
D. Seal the exterior section of the Wall
Thimble to the wall with non-hardening
waterproof sealant. As an option, you may
also seal the gap between the pipe and Wall
Thimble with sealant.

5. If the ue exit is on back of the stove, and
a horizontal through-the-wall installation is

Table 1

Vent Component Framing Dimensions

3” Ceiling Support/
Firestop Spacer

9-3/4” x 9-3/4”

4” Ceiling Support/
Firestop Spacer

.

10-3/4” x 10-3/4”

3” & 4” Cathedral
Ceiling Support Box

10-3/4” x 10-3/4”

3” & 4” Wall Thimble

7-1/2” x 7-1/2”

Figure 1

VERTICAL CAP

STORM COLLAR

FLASHING

ATTIC
INSULATION

PIPE ADAPTER

CEILING SUPPORT
FIRESTOP SPACER

SEE TABLE 1

FOR FRAMING

REQUIREMENTS

3 INCH MINIMUM

ATTIC

INSULATION SHIELD

PELLET

VENT PIPE

STOVE

7

desired (Figure 6):
A. Place the appliance according to
manufacturer’s instructions.
B. Connect the Pipe Adapter to back of stove
and attach sucient pipe to penetrate Wall
Thimble and extend at least 6” beyond the
exterior wall. You may install the optional
House Shield as shown in Figure 6. The
House Shield is used to protect the exterior
wall from vent discharge. Attach a Square or
Round Horizontal Cap. The Round Horizontal
Cap can be swiveled to be directed away
from nearby objects (fence, plants, etc.),
but must still be pointing in a generally
downward direction. Important: Horizontal
Caps must be pointed in a generally
downward direction to insure rain and snow
do not enter the cap, and cause potential

Figure 2

Figure 3

12 INCHES
MINIMUM

APPLY HIGH

TEMPERATURE
SEALANT COMPLETELY
AROUND TOP EDGE OF

STORM COLLAR

SHINGLES OVERLAP ON
TOP EDGE OF FLASHING

TEE WITH
CLEANOUT
ADAPTER

CEILING
SUPPORT/
FIRESTOP
SPACER

ATTIC
INSULATION
SHIELD

PIPE

ADAPTER

12” MIN

damage to the appliance. Either vent Cap
should be at least 6” from the wall.
C. Follow the below listed NFPA 211 rule for
distance of exit terminal from windows and
openings:
NFPA 211 (2003 ed.) Section 10.4 Termination:

10.4.5 (1) The exit terminal of a mechanical
draft system other than a direct vent
appliance (sealed combustion system
appliance) shall be located in accordance
with the following:
(a) Not less than 3 ft (.91m) above any forced
air inlet located within 10 ft. (3m).
(b) Not less than 4 ft. (1.2m) below, 4 ft. (1.2m)

WARNING

WARNING: Do not install any insulation
or other material inside the Wall
Thimble. Doing so can create a re
hazard. The Wall Thimble requires the
created air clearance from the pipe
in order to make a safe installation.
However, building insulation may be
installed around the outside of the Wall
Thimble

8

B. Visually inspect with a ashlight the
condition of the interior of the chimney
for cleanliness and structural integrity. All
evidence of soot and creosote must be
removed from the existing chimney system.
If you doubt your ability to accomplish this,
contact a certied chimney sweep. Do not
use chemical cleaners, as these can possibly
damage the inside of the chimney. Do
any required maintenance on the existing
chimney system at this time.
C. Install a DVL/DuraBlack Chimney Adapter

- product stock numbers (6”) 8674, (7”) 8774,
or (8”) 8874 - in the existing ceiling support
box, as shown in Figure 7. Note that the DVL/
DuraBlack Chimney Adapter only connects to
DuraVent chimney systems.
D. Connect the appropriate size Chimney
Adapter to the DVL/DuraBlack Chimney
Adapter.
E. Connect the appliance to the Chimney
Adapter using a Pipe Adapter, lengths of pipe
as required, and an Adjustable Length pipe.
Slide the Adjustable Length down over the
top pipe section, position the installation

Figure 4

Figure 5

Figure 6

6 INCHES
MINIMUM

ROUND
HORIZONTAL
CAP
OPTIONAL

OPTIONAL
HOUSE
SHIELD

SQUARE
HORIZONTAL
CAP

6 INCH

MINIMUM

BLACK
INTERIOR

GALVANIZED EXTERIOR

TEE SUPPORT
BRACKET /
WALL STRAP

DOUBLE
TEE WITH
CLEANOUT
ADAPTER

4 FT.

WARNING

Do not install any insulation or other
material inside the Wall Thimble.

horizontally from or 1 ft. (305mm) above any
door, window or gravity air inlet into any
building.
(c) Not less than 2 ft. (0.61m) from an
adjacent building and not less than 7 ft.
(2.1m) above grade when located adjacent to
public walkways.

6. If it is desired to attach to an existing 6”,
7” or 8” DuraTech, DuraPlus or DuraChimney
chimney, either roof supported, or ceiling
supported: (Figure 7).
A. Remove any existing connector pipe,
adapter or connector going into the ceiling
support box.

9

vertically plumb, then slip the Adjustable
Length up and twist lock it to the Chimney
Adapter. Once all the components are rmly
seated and properly aligned, carefully drill
three 1/8” diameter holes through the outer
sleeve only in the center of the slots located
at the bottom of the Adjustable Length
pipe. Do not penetrate the inner liner. Use
(3) 3/8” length sheet metal screws to secure
the Adjustable Length pipe. The completed
installation will look like
Figure 7.

INSTALLATION INTO A MASONRY
FIREPLACE

1. Have the masonry chimney inspected by

a certied chimney sweep or installer, to
determine it’s structural condition.

2. Carefully read the pellet stove or insert
installation instructions.

3. Measure and record the dimensions as
shown in Figure 8.

4. Use dimension “A” to determine total pipe
requirements. Add 12 additional inches
to insure the termination is an adequate
distance above the rooine.

5. The gross pipe required will be “A”
dimension plus 12". Five feet of this will be
Flex Pipe. The remainder will be rigid pipe.
For each joint, subtract 1-1/ 2" to allow for
the overlap. You may need extra pipe, or an
adjustable length pipe section to achieve the
correct height.

6. Assemble the rst rigid pipe section to
the Flex Pipe, insuring that the “UP” arrows
shown on the pipe labels are, in fact, pointing
up. Push the sections together and twist to
lock. Screws are not required for a rm lock,
however, should it be desired to use them,
use stainless steel sheet metal screws 1/4"
long - DO NOT penetrate the inner liner of
the pipe.

7. Repeat this process for the remainder of
the pipe sections, and lower the assembly
down the chimney as shown in Figure 9.
Lower it below its normal position in order

to connect the Flex Pipe to the pipe on the
appliance. It may be necessary to tie a line to
the top section, to pull it back up later.

8. In making the connection at the appliance,
congurations other than the one shown in
Figure 10 may be made. It may be necessary
to contact the manufacturer of the unit to
determine exactly what may or may not be
done to make the correct connection. Some
typical arrangements are shown in Figures
11 and 12. A Pipe Adapter may be needed,
depending on the exit size of the stove or
insert collar.

9. If a Tee is necessary to make the
connection, as shown in Figure 12, the Tee
has a removable Clean Out Adapter on its
base to enable cleaning. The Tee Support

Figure 7

PELLET VENT
CHIMNEY
ADAPTER

DVL/DURABLACK
CHIMNEY ADAPTER

CHIMNEY
SUPPORT BOX

PELLET VENT
CHIMNEY
ADAPTER

EXISTING
DURATECH,
DURAPLUS, OR
DURACHIMNEY
SYSTEM

PELLET

VENT

SYSTEM

10

Bracket to hold the Tee to the rear of the
appliance is mandatory. If it is desired to
mount the Tee Support to the rear of the
stove, obtain approval from the manufacturer
of the stove before drilling, tapping, or
performing any other alterations to the
appliance.

10. Connect the appliance to the coupling
on the bottom of the Flex Pipe, by twisting
to the locked position. Push the appliance
into the replace to its nal resting place. Go
to the top of the chimney and pull the vent
system up to it’s desired height.

11. For the termination of the pellet vent,
you will use a Tall Cone Flashing, and a Storm
Collar. This will require 14" of pipe above the
top of the masonry chimney. Pull the pipe up
through the ashing to the desired height.
Mark where the Storm Collar will go. Slip the
Storm Collar down over the pipe, and ax
it to the pipe with a 1/4”long stainless steel
sheet metal screw. (Figures 13 & 14). The
Storm Collar will then support the entire vent
system. Install the Cap. Seal the joint at the
Storm Collar, and any other joints or seams
which may appear suspect. Figure 15 shows
a Tall Cone Flashing modied to t a chimney
where the tile liner protrudes above the
masonry, as another alternate termination
technique. This completes the masonry
installation.

INSTALLATION THROUGH
SIDE OF MASONRY CHIMNEY

1. Set the appliance in its nal location

and mark the center of the hole where the
pipe is to penetrate the masonry chimney
(Figure 16). Insure that you comply with the
manufacturer’s specications in regards to
clearance and distances from combustible
surfaces.

2. The pellet vent system is assembled
essentially the same as previously described
for installation in an existing masonry
chimney with the exceptions listed:

A. No Flex Pipe is required, unless the

Figure 8

12 INCHES TO

END OF PIPE

B

C

A

TOP VIEW

Figure 9

11

Figure 10

RIGID

PELLET VENT

PELLET VENT
CAP

TALL CONE
FLASHING

SCREW STORM
COLLAR TO OUTER
LINER OF PIPE WITH
SHEET METAL
SCREWS. THIS WILL
SUPPORT SYSTEM.

FLEX PELLET
VENT

RIGID PELLET
VENT ATTACHED
TO THE STOVE

PELLET
STOVE
INSERT

TRANSITION TO
FLEX PELLET VENT

Figure 11

Figure 12

TEE SUPPORT
BRACKET

TEE WITH
CLEANOUT

FLEX PELLET
VENT

REAR EXIT
APPLIANCE

TOP EXIT
APPLIANCE

FLEX PELLET
VENT

PIPE
ADAPTER

B

C

Figure 13

6 INCHES
MINIMUM

MASONRY
ANCHORS

PELLET
VENT PIPE

NONHARDENING
SEALANT

PELLET VENT
CAP

TALL CONE
FLASHING

STORM
COLLAR

Figure 14

TALL CONE FLASHING

SHEET
METAL
SCREWS

TOP VIEW OF
STORM COLLAR
AND PIPE

SHEET METAL SCREW
3 REQUIRED, DO NOT
PENETRATE INNER LINER

VENT PIPE

STORM
COLLAR

12

masonry chimney has an oset. If an oset
exists, then a section of Flex Pipe will be
needed to accommodate the oset.
B. A Tee is installed at the bottom end of the
vertical pipe (Figure 16).
C. A Reduction Collar or a Trim Collar is
required to go around the pipe section that
passes through the masonry to give it a
nished look (Figure 16).

3. It will be necessary to break out the
masonry around the location of the pipe
center line mark to a diameter of at least 4"
for 3" pipe, and at least 5" in diameter for 4"
pipe.

4. Install the Tee on the bottom of the vertical
pipe system and lower it down the chimney
until the center of the branch of the Tee
is level with the center of the hole in the
masonry. Connect horizontal pipe section to
the Tee branch.

5. Holding the pipe at the proper elevation,
install the Storm Collar and Cap, as described
in Step 11 for the replace installation.

6. Connect the horizontal piece of pipe which
goes through the masonry to the Tee by
pushing it through the hole in the masonry,
and lining it up with the branch of the Tee.
Then push it into the Tee, while twisting to
lock it.

7. Once the horizontal pipe section is in
place, the space between the pipe and the
masonry may be lled with high temperature
grout, as shown in Figure 17, if desired.

8. Install the Reduction Collar or Trim Collar,
the 90° Elbow, and the vertical pipe section
going to the appliance. An Adjustable Pipe
length will probably be needed, as well as a
Pipe Adapter.

9. Conduct a nal inspection of the entire job,
and review the manufacturer’s operating and
installation instructions once more, before
ring the appliance.

Figure 15

USE MASONRY
ANCHORS TO
SECURE
FLASHING TO
MASONRY

TRIM
BASE TO
FIT FLUE
TILE

NONHARDENING
SEALANT

Figure 16

Figure 17

FILL SPACE
BETWEEN
PIPE AND
MASONRY
WITH
GROUT

REDUC TION
COLLAR OR
TRIM
COLLAR
TEE

TEE

13

INSTALLATION IN A CATHEDRAL
CEILING

1. Mark a line on the side of the Cathedral

Ceiling Support Box to correspond to the line
of the roof pitch, as shown in Figure 18. Allow
for the Support Box to protrude below the
low side of the nished ceiling a minimum
of 2".

2. Position the appliance at its proper
location on the oor. Pay close attention to
the manufacturer’s installation instructions
regarding the distances from combustibles,
etc. The appliance must also be positioned so
the Support Box will not interfere with roof
rafters or other structural framing.

3. Run a plumb line from the center of the
ue exit on the stove to the ceiling. Mark the
point on the ceiling where the plumb line
intersects. This represents the center of the
support box. Drill a small hole through the
ceiling at this point, so it can be located from
the top of the roof.

4. From the roof, locate and mark the outline
of the Support Box.

5. Remove shingles or other roof covering as
necessary to cut the rectangular hole for the
Support Box. Cut the hole 1/8" larger than the
dimensions of the Support Box. (Figure 19).
The rectangular hole should be centered on
the small hole which you drilled through the
ceiling to mark the location. Again, verify that
you are not cutting through rafters or framing
members.

6. Run the Support Box through the roof
as shown in Figure 20, and place it so that
the bottom of the Support Box protrudes at
least 2" below the nished ceiling. Align the
Support Box vertically and horizontally with
a level. Temporarily tack the Support Box in
place through the inside walls and into the
roof sheathing.

7. Using tin snips, cut the Support Box from
the top corners down to the roof line, and
fold the resulting ap over the roof sheathing
(Figure 21). Before nailing it to roof, run a

Figure 18

Figure 19

Figure 20

Figure 21

14

bead of non-hardening sealant around the
outside top edges of the Support Box so as
to make a seal between the box and the roof.
Clean out any combustible material or debris
from inside the Support Box.

8. Place the Pipe Clamp, (which comes as a
component of the Support Box) around the
top of the hole in the bottom of the Support
Box (Figure 23).

9. Connect the necessary amount of pipe
sections to reach the stove at a point where
the Cap will be at least 12" above the roof
(Figure 22).

10. Run the assembled pieces of pellet
vent pipe down through the Clamp of the
Support Box and connect to the appliance
with a Pipe Adapter. Using a level, make slight
adjustments in the position of the appliance
until the pipe is truly vertical. Tighten the
bolts in the Clamp. Note that the overall
length of the pellet vent pipe as assembled,
can be no longer than 42 feet.

11. Slip the Flashing over the pipe section(s)
protruding through the roof. Secure the base
to the roof with roong nails as shown in
Figure 24. Insure that the roong material
overlaps the top edge of the Flashing (Refer
to Figure 2).

CLEANING AND MAINTENANCE

1. Have your system cleaned by a certied

chimney sweep if you have doubts about
your ability to clean it. Use a plastic or exible
steel brush. Do not use a sti brush that
will scratch the stainless steel liner of your
system.

2. PelletVent systems must be installed so
that access is provided for inspection and
cleaning.

3. The pellet vent should be inspected at
least once every month during the heating
season.

4. Do not use chemical cleaners. They can
damage the vent pipe.

5. To increase pellet vent life, coat all

Figure 22

TRIM

2” BELOW
FINISHED
CEILING

CATHEDRAL
CEILING
SUPPORT BOX

LEVEL

12” MINIMUM

Figure 23

Figure 24

USE NONHARDENING

SEALANT

WHERE STORM

COLLAR SITS

ON FLASHING

CLAMP

TRIM

15

exterior metal parts with high temperature,
rustproof paint. This is highly recommended,
particularly in areas near the ocean.

6. In case of a chimney re, close all appliance
draft openings, shut o pellet appliance and
call your Fire Department. Do not use the
appliance or vent until it has been inspected
for possible damage.

7. DuraVent is not responsible for ue by­products that might discolor roofs or walls.

Fuel: Be sure to follow the recommendations
of the appliance manufacturer for the type
of fuel to use. Vent Runs: Condensate is
more likely to form in longer vents because
the exhaust temperature cools further away
from the appliance. If the exhaust cools
to a certain point, moisture in the exhaust
condenses in the vent, which can lead to
accelerated vent corrosion. Maintain hot ue
gas temperatures. It is recommended that
the vent run inside the building envelope
or inside a chase enclosure to minimize the
vent’s exposure to cold temperatures. Be sure
to follow all-applicable building codes and
the requirements of the vent and appliance
manufacturers. Appliance Operation:
Always operate your appliance in accordance
with the appliance manufacturer’s
recommendations. However, operating the
appliance at its lowest setting has a greater
chance for condensate to form in the vent
due to the low exhaust temperature. In order
to help reduce condensate from forming
inside the vent system, operate the appliance
at higher temperatures when colder weather
is encountered. Higher operation settings
provide for warmer ue temperatures, which
help to keep moisture suspended in the ue
gases. Inspection and Maintenance: Be sure
to inspect the appliance and vent often to
determine if there has been any corrosion or
damage to the system. Be sure to keep the
venting system clean, including the tee cap (if
applicable).

PelletVent® are registered trademarks of M&G DuraVent, Inc.
All rights reserved, ©2012 M&G DuraVent is a member of M&G Group.

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

L502 06/2012

M&G DURAVENT LIMITED LIFETIME WARRANTY

M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and
PolyPro® (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. 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. This limited lifetime warranty applies only to parts manufactured by DuraVent.

DuraVent provides the following warranties for its products: One Hundred Percent (100%) MSRP 15 years from the date of purchase, and Fifty
Percent (50%) thereafter, except for the following limitations on: all Termination Caps and DuraBlack® are warranted at One Hundred Percent
(100%) for ve years.

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.

Corn, bio-fuels, driftwood or other wood containing salt, preservative-treated lumber, plastic and household trash or garbage, or wood pellets
containing such materials must not be burned in the appliance or replace. In case of a chimney re, the chimney must be inspected and
approved by a certied Chimney Sweep before reuse. After each annual inspection, maintenance, and cleaning, the certied Chimney Sweep
must ll out and date the appropriate section of the warranty card provided with the chimney liner.

LIMITATIONS ON INTERNET SALES: Notwithstanding any other terms or conditions of this Limited Lifetime Warranty, DuraVent provides no
warranty for the following specic products if such products are not installed by a qualied professional installer: DuraTech®, DuraPlus HTC®,
DuraChimney® II, PelletVent Pro®, DirectVent Pro®, FasNSeal®, FasNSeal® W2, FasNSeal® Flex, and PolyPro®, and M&G DuraVent’s relining
products including DuraLiner®, DuraFlex® (SW, Pro, 316, 304), and Ventinox®. For purposes of this warranty, a trained professional installer is
dened as one of the following: licensed contractors with prior chimney installation experience, CSIA Certied Chimney Sweeps, NFI Certied
Specialists, or WETT Certied Professionals.

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

REV 3.22.2012

Manufactured in Vacaville CA and Albany NY