HearthStone 8220 User manual

Deva 100 Model# 8220
Manual: 6400-40460
Revised 9/22/2008
Deva 100 (Model 8220)
Wood-fired Cook Stove
OWNER'S MANUAL
INSTALLATION AND OPERATING
INSTRUCTIONS
PLEASE READ THIS ENTIRE OWNER’S MANUAL BEFORE YOU INSTALL AND USE
YOUR NEW Deva 100 COOK STOVE. To reduce the risk of fire, follow the installation
instructions. Failure to follow these instructions may result in property damage,
bodily injury, or even death.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE!
CONTACT LOCAL AUTHORITIES HAVING JURISDICTION (BUILDING
DEPARTMENT or FIRE OFFICIALS) ABOUT PERMITS REQUIRED, RESTRICTIONS
AND INSTALLATION INSPECTION IN YOUR AREA.

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TABLE OF CONTENTS
INTRODUCING YOUR .........................................................................................................................3
DEVA 100 WOOD-FIRED COOK STOVE........................................................................................3
CODES .................................................................................................................................................. 4
SAFETY INFORMATION .......................................................................................................................... 4
PERIODIC CHECKLIST ........................................................................................................................... 5
EMERGENCY PROCEDURES.................................................................................................................. 6
SPECIFICATIONS.................................................................................................................................7
SETTING UP YOUR DEVA COOK STOVE......................................................................................8
UNPACKING........................................................................................................................................... 8
INSTALLING YOUR STOVE..................................................................................................................... 8
CLEARANCES TO NFPA 211 PROTECTED SURFACES........................................................................ 8
HEARTH REQUIREMENTS AND FLOOR PROTECTION........................................................................... 9
CLEARANCES TO COMBUSTIBLES...................................................................................................... 10
VENTING COMPONENTS AND CONFIGURATION.................................................................................. 12
COMPONENTS OF A VENTING SYSTEM............................................................................................... 12
Installing a Venting System.................................................................................................... 12
CONNECTING YOUR WOOD-FIRED COOK STOVE .............................................................................. 13
Connecting to a Prefabricated Metal Chimney.................................................................... 13
OPERATING YOUR DEVA 100 COOK STOVE............................................................................17
CONTROLS AND FEATURES................................................................................................................ 17
CHOOSING FIREWOOD........................................................................................................................ 18
BUILDING YOUR FIRST FIRE............................................................................................................... 19
Building A Fire.......................................................................................................................... 19
Burn Rate.................................................................................................................................. 20
Over-Fire Caution..................................................................................................................... 20
Removal And Disposal Of Ashes.......................................................................................... 20
Creosote Formation And Need For Removal...................................................................... 21
Gaskets...................................................................................................................................... 21
Glass.......................................................................................................................................... 21
MAINTENANCE OF THE GLASS COOK TOP ......................................................................................... 22
CLEANING OF THE GLASS COOK TOP ................................................................................................ 22
Cast Iron.................................................................................................................................... 22
TROUBLESHOOTING.................................................................................................................... 23
TROUBLESHOOTING GUIDE ................................................................................................................ 24
REPLACEMENT PARTS &OPTIONAL ACCESSORIES........................................................................... 25
SAFETY LABEL .................................................................................................................................... 26
HEARTHSTONE WOODSTOVE LIMITED WARRANTIES....................................................... 27
QUALIFYING FOR WARRANTY COVERAGE...........................................................................28
WARRANTY REGISTRATION......................................................................................................29

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Introducing Your
Deva 100 Wood-fired Cook Stove
Congratulations! You have just invested in a
most unique wood burning cook stove – the
Deva 100 from Hearthstone Quality Home
Heating Products Inc®. The Deva 100 Model
8220 is a wood burning cook-stove. At 1.6
cubic feet firebox and 2.47 cubic feet oven
capacity you can be proud to join the
Hearthstone family with our Premier Wood
Burning Cook stove. The generous height
allows for loading of wood through the front up
to 17” inches long!
Your purchase insures years of clean,
comfortable heat and cooking with minimal
maintenance. The Deva 100 blends modern
technology with the unique beauty of cast iron.
We trust that you will appreciate the quality of
our handcrafted product.
Please read this manual in its entirety. Its
purpose is to familiarize you with your cook
stoves safe installation, operation and
maintenance. It contains information that will
be useful to you now and in years to come, so
keep it handy and refer to it as needed.
Use these instructions as well as national,
state, and local building codes to install your
cook stove. Be sure to maintain the
designated stovepipe and cook stove
clearances to walls, ceilings, hearth, and other
combustible surfaces. This will help reduce
the risk of fire. Failure to follow these
instructions can result in property damage,
bodily injury, and even death.
Locate your cook stove in a safe, convenient,
open area; away from traffic flow, doors, and
hallways; and near a chimney and chimney
connector. Review the proper clearance
measurements from combustible surfaces. You
can safely reduce required clearances in most
cases with a special connector pipe and special
wall coverings as specified by this manual, the
NFPA 211 codes, and your local authorities
having jurisdiction.
Keep furniture, drapes, curtains, wood, paper,
and other combustibles far away from the stove.
Never install the cook stove in a location where
gasoline, kerosene, charcoal lighter fluid or other
flammable liquids are used or stored.
SAFETY NOTICE:
A HOUSE FIRE MAY RESULT IF THIS
COOK STOVE IS NOT INSTALLED
PROPERLY. FOR YOUR SAFETY,
CAREFULLY FOLLOW THE INSTALLATION
DIRECTIONS. CONTACT LOCAL
BUILDING OR FIRE OFFICIALS ABOUT
RESTRICTIONS AND INSTALLATION
INSPECTION IN YOUR AREA.

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The performance of your stove depends on
many variables. Since all installations are
unique, the general information and
operating procedures presented here can
only serve as useful if you have any
questions; do not hesitate to contact your
dealer for additional information.
Validate your warranty - return your
warranty registration card to Hearthstone
within 30 days of purchase to validate your
warranty. Contact your dealer for any
necessary warranty service.
This cook stove is manufactured and
warranted by:
Hearthstone Quality Home
Heating Products Inc®
317 Stafford Ave.
Morrisville, VT 05661
CODES
When you install your Deva, it is imperative
that you adhere to all local codes, which
can be obtained from either of the following
two national sources:
American National Standards Institute,
Inc. (ANSI)
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
(NFPA)
Battery March Park
Quincy, MA 02269
SAFETY INFORMATION
Read and understand this Owner's
Manual thoroughly before installing and
using this stove.
Make sure to install your stove:
According to the manufacturer's
recommendations.
In accordance with all applicable codes.
With the proper sized chimney.
When using your stove:
Warn children and others unfamiliar with
wood-fired cook stoves the danger of
touching hot, radiating surfaces of your
stove. For your additional safety, obtain
hearth and stove guards through your local
dealer. Keep pets away from the stove to
prevent unnecessary hazards.
Burn natural wood only. Higher efficiencies
and lower emissions result when burning
air-dried, seasoned wood, as compared to
green or freshly cut wood.
Use caution when loading firewood into a
hot stove.
Keep the fuel loading door closed at all
times except when loading wood.
Keep the ash pan tray fully inserted.
Avoid grease build-up when cooking on the
top surface. Clean the surface regularly
after using the cook top surface.
Use care when cooking on the glass top.
Scratching the surface will weaken and
shorten the life of the glass. (Pick up
your cooking pots pans instead of
sliding them on the surface.)
Never modify this cook stove in any way.
Never burn kiln dried wood, painted or
treated wood, solvents, trash, plywood,
colored or glossy paper, artificial logs,

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cardboard, coal, garbage or driftwood.
Especially, do not burn coal in this stove.
Never Use gasoline type fuel, kerosene,
charcoal lighter fluid, or other liquid fuels or
solid fire starters to start or invigorate the
fire. These fuels can possibly generate
carbon monoxide, which can sap the supply
of oxygen or even create an explosion.
Keep all such materials away from the
stove.
Never use a wood grate andirons or other
device to elevate the fire.
Do not allow logs to rest against or
otherwise come in contact with the glass
when the door is closed.
Do not slam the door or use it to force wood
in to the cook stove.
Never over-fire your cook stove. (See page
20)
Never put articles of clothing or candles on
a hot cook stove.
Do not connect the cook stove to a flue that
is serving another appliance.
Do not set any materials on the cook top
that are not intended. The surface will
become very hot during operation and even
though ignition may or may not take place
the heat will melt or burn most objects which
may in turn drip into the firebox will may
create an ignition.
Other safety guidelines
Keep all combustible items such as
furniture, drapes, clothing, and other items,
at least 36" (0.92 m) from the cook stove
(See page 100 for more clearance to
combustible information)
Install a smoke detector.
Keep a fire extinguisher handy. We
recommend the type rated "A B C."
Dispose of ashes properly. (See page 20)
PERIODIC CHECKLIST
Perform each of these tasks at the specified
intervals. (While these are to be used as a rule
of thumb, Hearthstone recommends that a
qualified service technician should inspect your
wood burning system approximately every other
month during the heavy use season)
Every Week:
•Empty ashes from the firebox and ash pan,
sooner if the firebox is full.
Every Month:
•Visually inspect chimney connector and
chimney for creosote; clean accordingly.
Tap the outside of the pipe to feel for
buildup of creosote. If the pipe feels
hollow, your pipe is most likely clean
and safe for use. If the pipe feels solid
or full, it is probably full of creosote and
should be cleaned before further use.
Every Other Month:
•A visual inspection of the chimney
connector and chimney for creosote is
recommended depending upon your use of
the stove.
•Check the fuel loading door seal using the
"dollar bill test." (When the fire is out and
the stove is cool, shut the door on a dollar
bill. If the bill pulls out without any
resistance, then your stove’s door isn't
sealed properly.) To tighten the seal,
change the door gasket.
Every Season:
Have a qualified service technician inspect your
chimney and wood burning system.
•Dismantle the chimney connector and clean
it thoroughly. Replace any pieces that show
signs of rust or deterioration.
•Inspect and, if necessary, clean your
chimney.
•Thoroughly clean out the inside of the stove.

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•Inspect all door gasket material and replace
if worn, frayed, cracked or extremely hard.
•Clean and inspect the oven and oven door
components.
EMERGENCY PROCEDURES
If you have a stovepipe or chimney fire, follow
these instructions:
1. If the fire is too threatening, leave the area
and call the fire department immediately! If
not, perform the next three steps.
2. Close the primary air control.
3. Close the stovepipe damper (if present).
4. Keep all doors to the stove closed!
▌WARNING:
DO NOT ATTEMPT TO PUT OUT A
STOVEPIPE OR CHIMNEY FIRE BY
THROWING WATER ONTO THE STOVE,
STOVEPIPE, OR CHIMNEY. THE
EXTREMELY HIGH TEMPERATURE
ASSOCIATED WITH SUCH FIRES CAN
CAUSE INSTANT-ANEOUS STEAM AND
SERIOUS BODILY HARM.
Once the chimney fire has expired, leave the
primary air control closed and let the fire in the
stove die out completely. The cook stove
should not be fired again until the stove,
stovepipe, and chimney are all thoroughly
inspected for any sign of damage. You must
correct any damage before using your cook
stove again.

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Specifications
Oven Capacity: 2.47 cubic feet
Firebox Capacity 1.6 cubic feet
Maximum Heat Output: 46,000 BTUs per hour of cordwood (based on independent
laboratory test results)
Maximum Log Length: 17" (43 cm) fuel loading door
Height: 33-3/4" (85 cm)
Width: 40” (102 cm)
Depth: 23 3/4" (60 cm)
Fuel loading door dimension: 7”x 9-3/4”
(18 cm x 25 cm)
Stovepipe Size 6" (15.2 cm) diameter
2-1/2
23-3/4
33-3/4
40" 23-1/4"
26-3/4
7
6"
33-1/2"
6-3/4
6" 17-3/4
6
Front

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Setting Up Your Deva
Cook Stove
UNPACKING
Hearthstone packages your Deva 100 cook
stove with the greatest care, so that it ships
safely. Under certain circumstances, however,
damage can occur during transit and handling.
When you receive your cook stove, unpack it
carefully, inspecting your stove and all parts for
damage. Also, make sure that all parts are
included in the box. If any parts are damaged
or missing, please contact your dealer
immediately.
INSTALLING YOUR STOVE
The Deva 100 is not approved for
installation in a mobile home.
The Deva 100 Cook stove does not require the
use of additional outside air for combustion.
There is no kit available for this installation so
please keep this in mind when installing and
planning your Deva 100.
First you must decide where your stove will
reside. After choosing an appropriate spot,
inspect this location to make sure that the
stove will have enough clearance to
combustible materials. These combustibles
can include walls, floor, ceiling, cabinets,
fireplace, and chimney. You must carefully
consider the clearances to all of these
combustibles before actually connecting your
cook stove. When considering these
clearances, also decide the kind of floor the
stove will rest on. Depending on your floor,
you can install your stove as it is, or use a floor
protector, some types of flooring may require
additional floor protection.
Please use this section to plan how to locate
your stove.
Read this chapter to obtain a sound
understanding of how to properly install your
stove.
If you use a close clearance connector pipe, it
must be tested to UL standards and listed.
Check the listing for your pipe for actual
clearances. The diagrams in this manual
represent typical installations, but are specific to
the Simpson Dura-Vent DVL brand. Clearances
cannot be reduced without the use of close
clearance connector pipe and/or by protecting
the surfaces per NFPA 211 standards.
CLEARANCES TO NFPA 211
PROTECTED SURFACES
You can reduce the clearances to combustible
surfaces by using any National Fire Protection
Agency (NFPA) approved wall protection
system. Please refer to NFPA 211 for
specifications and complete details. You can
obtain this information directly from NFPA.
National Fire Protection Agency
Batterymarch Park
Quincy, MA 02269
1-800-344-3555
1-617-770-3000

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HEARTH REQUIREMENTS AND FLOOR
PROTECTION
Install your stove on the following:
A non-combustible floor protector that you
obtain from your dealer, or any other
noncombustible material. A floor protector
is any noncombustible surface laid on the
floor underneath the stove that extends, 16
inches -US (or 46 cm in Canada) beyond
the fuel loading door and 8 inches (20 cm)
beyond each side of the cook stove. (See
Figure 1) The hearth protection for your
Deva 100 must have an R-value of at least
0.89 or be a UL Listed floor protection.
An example of a non-combustible floor
protector would be a hearth constructed
with a continuous layer of a listed backer
board (such as Micore, Wonder-Board or
Durock) used for ember protection with a
tile, brick, slate, or another noon-
combustible facing.
For horizontal chimney connector installations,
the floor protection must be installed beneath
the connector and 2” beyond each side.
Floor protector’s come with various types of
specifications. To convert a floor protector’s
specification to an R-value, do one of the
following:
•If the R-value is given, use that value—
no conversion is needed.
•If a K-factor is given with a required
thickness (T) in inches, use this
formula: R-value = 1/K x T
•If a C-factor is given, use the formula:
R-value = 1/C
To determine the R-value of the proposed
alternate floor protector:
•Use either the K-factor or the C-factor
formula explained above to convert
specifications not expressed as
R-values.
•For multiple layers of floor protectors,
simply add the R-values of each layer
to determine the overall R-value of the
layers.
If the overall R-value of your setup is greater
than the R-value of the specified floor protector,
then your setup is acceptable.
18 (CAN)"
16 (US)
56"
23-3/4
41-3/4(CAN)"
39-3/4(US)
If venting the unit using the rear exit, floor
protection must extend 2" on either side of pipe.
8
Figure 1 - Hearth Protection for top vent
installations

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CLEARANCES TO COMBUSTIBLES
Use this section to plan the layout for
your stove. Consider clearance of pipe
to combustibles and cook stove to
combustibles.
You must follow minimum clearances for the
Deva 100 cook stove to combustibles such as
walls and ceilings. You may reduce the general
clearances if installing the stove near Protected
Surfaces.
Figure 2 - Clearance to Combustibles
MINIMUM CLEARANCES TO COMBUSTIBLES (from closest point of stove)
Clearan
ces
Single wall connector Double walls connector
Top Exit Rear Exit Top Exit Rear Exit
(in) (cm) (in) (cm) (in) (cm) (in) (cm)
A 10 26 4 11 4 11 4 11
B 10 26 4 11 4 11 4 11
C 16 41 16 41 14 36 16 41
D 21.5 55 n/a n/a 19.5 50 n/a n/a
ALCOVE Top exit connector
Clearances Single wall
connector Double wall connector)
(in) (cm) (in) (cm)
A 7 18 4 11
B 16 41 14 36
C 16 41 14 36
D 21.5 55 19.5 50

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Alcove requirements
Maximum alcove depth is 48”/122cm
Minimum alcove height is 96”/ 2439cm
Minimum alcove width is 63”/ 160cm (with single wall connector)
Minimum alcove width is 58”/ 147cm (with double wall connector)
DOUBLE WALL CONNECTORSINGLE WALL CONNECTOR
CLEARANCE TO COMBUSTIBLES
CHIMNEY CONNECTOR

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VENTING COMPONENTS AND
CONFIGURATION
COMPONENTS OF A VENTING SYSTEM
DO NOT CONNECT THIS UNIT TO A
CHIMNEY FLUE SERVING ANOTHER
APPLIANCE
The complete venting system consists of
several components: chimney connector, wall
thimble, wall pass-through, chimney, and liner.
It is absolutely necessary that if you install all of
these components, they must remain within the
clearances to combustibles discussed earlier to
install your stove safely. To protect against the
possibility of a house fire, you must properly
install and constantly maintain the venting
system. Upon inspection, immediately replace
rusted, cracked, or broken components.
The chimney connector is the stovepipe from the
woodstove to the chimney. The chimney
connector stove pipe must be 6" (152 mm)
diameter, 24 MSG or 25 MSG blued steel
connector pipe. Do not use aluminum or
galvanized steel pipe - they cannot withstand the
extreme temperatures of a wood fire.
Double wall connector (close clearance pipe)
which must be used with a listed factory-built
“Type HT" chimney and may also be used
with a masonry chimney to reduce
clearances, is available from several
manufacturers, your dealer can help you
choose. Some air insulated connector pipe
models available are: Simpson Dura Vent
DVL, Metalbestos DS. The following models
have acceptable close clearance connector
pipe for the Deva 100; Security, GSW and
Ameritec.
Chimney connector shall not pass through
floor or ceiling, nor any attic or roof space,
closet or similar concealed space. Where
passage through a wall or partition of
combustible construction is desired, the
installation shall conform to NFPA 211 or
CAN/CSA - B365.
It is very important to follow minimum
clearances for chimney connectors to
combustibles such as walls and ceilings
when installing the stove near non-
combustible surfaces. Typical chimney
connector clearances are outlined below.
The single wall clearances are generic; the
Double wall clearances are for Simpson Dura
Vent DVL, CHECK THE SPECIFICATIONS
FROM THE MANUFACTURER OF YOUR
CONNECTOR.
A thimble is a manufactured (or site-constructed)
device installed in combustible walls through
which the chimney connector passes to the
chimney. It keeps the walls from igniting. You
must use a wall thimble when installing a
chimney connector through a combustible wall
to the chimney.
A wall pass-through (or chimney support
package) also keeps the walls from igniting.
You must use one when connecting through a
wall or ceiling to a prefabricated chimney.
Only install this stove to a lined masonry
chimney or an approved high temperature
prefabricated residential type building heating
appliance chimney. Do not connect this stove to
a chimney serving another appliance; you will
compromise the safe operation of both the wood
cook stove and the connected appliance.
▌WARNING:
DO NOT CONNECT THIS APPLIANCE TO
ANY AIR DISTRIBUTION DUCT OR SYSTEM.
A liner is the UL 1777 or ULC S635 (for factory
built fireplace or masonry) chimney.
You must connect your stove to a chimney
comparable to those recommended in this
manual. Do not use stovepipe as a chimney or
liner system. Use stovepipe for freestanding
installations only to connect the stove to a
proper chimney.
INSTALLING A VENTING SYSTEM
Stovepipe sections must be attached to the
stove and to each other with the crimped end
toward the stove. If creosote builds up, this
allows the creosote to run into the stove and not
the outside of the stovepipe and onto the stove.
Secure all venting joints. Attach the stovepipe
to the stove's flue collar, with at least three
sheet metal screws. Install #10 x 1/2" (3 mm x

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13 mm) sheet metal screws into the holes pre-
drilled in the flue collar.
You can simplify connecting stovepipe by using
additional accessories such as telescoping
pipes, slip-connectors or clean-out tees. These
accessories ease the inspection of your
chimney, as well as allowing you to easily
dismantle the stovepipe (without moving the
cook stove) when you periodically inspection
the stovepipe connection and chimney.
Install the stove as close as practical to the
chimney, while maintaining all proper
clearances. Install stovepipe that is as short
and as straight as possible. Horizontal runs of
stovepipe should always rise away from the
stove a minimum of 1/4" per foot (21mm/m).
Long runs of stovepipe to increase heat
dispersal are not recommended. Using longer
lengths of stovepipe or more connecting elbows
than necessary increase the chances of draft
resistance and the accumulation of creosote
buildup.
In general, you do not need to install a
stovepipe damper with the Deva. Some
installations, however, could benefit from a
stovepipe damper, such as a tall chimney which
can create a higher than normal draft. In such
cases, a damper can help regulate the draft.
The Deva requires a draft between 0.06" w.c.
and 0.1" w.c. For drafts above 0.1" w.c, install
a stovepipe damper. Locate your local
Hearthstone dealer to purchase a draft gauge
to measure the draft of your chimney and flue
system.
Remember, the NFPA has recommended,
minimum clearances for chimney connectors to
combustibles such as walls and ceilings.
CONNECTING YOUR WOOD-FIRED COOK
STOVE
You can install your Deva 100 to a
prefabricated metal chimney or a masonry
chimney.
CONNECTING TO A PREFABRICATED
METAL CHIMNEY
When connecting the Deva 100 to a
prefabricated metal chimney, you must follow,
precisely, the manufacturer's installation
instructions. Use only Type HT (2100 deg. F),
prefabricated metal chimneys listed per UL 103
or ULC S629 standards.
▌WARNING:
DO NOT CONNECT THE STOVE TO A
CHIMNEY FLUE SERVING ANOTHER
APPLIANCE.
Make sure the size of the chimney’s flue is
appropriate for the Deva 100. The Deva 100
requires a 6" (152 mm) inside diameter flue for
new installations. A 6” diameter flue provides
adequate draft and performance. You can use
an 8" (203 mm) diameter existing flue with a
reducer. An oversized flue contributes to
creosote accumulation. (In this case, bigger is
NOT better.)
When purchasing a prefabricated chimney to
install with your stove, be sure to also purchase
from the same manufacturer, the wall pass-
through (or ceiling support package), "T"
section package, fire-stops (when needed),
insulation shield, roof flashing, chimney cap,
and any other needed accessories. Follow the
manufacturer’s instructions when installing the
chimney and accessories. In addition, be sure
to maintain all manufacturers’
recommendations for the proper clearances to
the chimney.
There are two ways to install a prefabricated
metal chimney:
•An interior installation where the chimney
passes inside the residence through the ceiling
and roof.
•An exterior installation where the chimney
passes through the wall behind the stove then
up the outside of the residence.

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Tee Support Bracket
Adjustable Roof
Wall Strap
Chase Enclosure
Chimney Sections
Flashing
Storm Collar
Chimnet Cap
Chimney through outer wall with enclosed chase.
Starter section
Collar with built-in
Support Box and Trim
Two story house installation with attic.
Firesafe Enclosure
Firestop Radiation
Adjustable Roof
Chimney Cap
Wall Thimble
Tee
Stovepipe
Attic Insulation Shield
Chimney Sections
Twist-Lock
Support Bracket
Extended Roof
not included)
(Conduit
Flashing
Storm Collar
or other Lined Masonry Chimney
Tee
Chimney pipe through Clay tile
section
Adjustable Roof
Flashing
Storm Collar
Chimnet Cap
Starter
with built-in
Support Box
One story house installation with attic.
Access door
Tee clean-out
other Liner
Clay tile or
Shield
Wall Thimble
Stovepipe
Shield
Insulation
Access door
Masonry Chimney
Chimney Sections
Tee clean-out
Adjustable Roof
Flashing
Storm Collar
Chimnet Cap
Chimney is supported by Tee Support Bracket. Chimney is supported by Ceiling.
Whenever possible, choose an interior
chimney. An interior chimney heats up more
quickly and retains its heat; thus promotes a
better draft and discourages the formation of
creosote. An exterior chimney does not benefit
from the warmth of being surrounded by the
building, so it typically operates at lower flue
temperatures than an interior chimney. An
exterior chimney’s draft is not as strong and
may experience increased creosote
accumulation.
REVERSAL OF THE FLUE COLLAR
In order to reverse the flue collar to vent the
stove straight out the back, follow these simple
steps;
1) Using a 10mm wrench, or socket.
Locate and remove the four bolts
holding the flue collar in place. Once all
four bolts are removed pull the collar
away from the stove. Inspect the gasket,
ensuring it is in place, and in working
order.

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2) Locate and remove the four bolts that
hold the block-off plate on the back of
the stove. Remove the plate.
3) Place the flue collar on the back of the
stove over the rear flue exit with the
gasket side towards the stove. Rotate
the collar so the 3 chimney connector
screws are easiest to access when
necessary to install later. Replace the
four bolts using the 10mm wrench.
4) Place the cover plate over the flue exit
on the top of the stove, using the same
four bolts that were removed.
CONNECTION TO A MASONRY CHIMNEY
Consider two primary elements when
connecting your stove to a masonry chimney:
the chimney itself and the thimble where the
stovepipe connects to the chimney. Use only
Code approved masonry chimneys with a flue
liner.
Before connecting to a masonry chimney, hire a
professional to examine the chimney for cracks,
loose mortar, and other signs of deterioration
and blockage. If the chimney needs repair,
complete the project before installing and using
your stove. Do not install your stove until the
chimney is safe for use.
Make sure the chimney’s cleanout is complete
and working properly. To avoid a loss of draft,
the cleanout must close off completely. If
allowed to cool, your stove will perform poorly
and creosote will build up in the chimney.
Make sure the size of the chimney’s flue is
appropriate for this stove and that it is not too
large. Use a masonry chimney with an 8" x 8"
(203 mm x 203 mm) tile size for best results.
An oversized flue will contribute to the
accumulation of creosote.
Use the following checklist to ensure that your
masonry chimney meets these minimum
requirements:
Chimney wall construction:
Brick or modular block at least 4" (102 mm)
thick.
A rubble or stone wall at least 12" (305 mm)
thick.
Flue liner:
Minimum thickness of 5/8" (16 mm).
Installed with refractory mortar.
At least 1" (25 mm) air space.
An equivalent flue liner must be a listed
chimney liner system meeting type HT
requirements or other approved material.
Interior chimney requirements:
At least 2" (51 mm) clearance to
combustible structure
Fire stops must be installed at the spaces
where the chimney passes through floors
and/or ceiling.
Insulation must be 2" (51 mm) from the
chimney.
Exterior chimney requirements:
At least 1" (25 mm) clearance to
combustible structure.
Chimney height requirements: (See
Illustration)
At least 3 feet (0.9 m) higher than the
highest part of the roof opening through
which it passes.
At least 2 feet (0.6 m) higher than any part
of the roof within 10 feet (3 m) measured
horizontally from the top of the chimney.
This stove requires a minimum chimney height
of 13 feet (4 m). The maximum allowable
chimney height is 30 feet (9 m).

Hearthstone Quality Home Heating Products, Inc ®
Model 8220
16

Hearthstone Quality Home Heating Products, Inc ®
Model 8220
17
Operating Your
Deva 100 Cook Stove
Ash Pan
Door
Primary Air
Control
Oven
Thermometer
Flue Bypass
Fuel Loading
Door
Oven Door
Figure 2 - Controls and Features
WARNING:
DO NOT INSTALL IN A SLEEPING
ROOM
WARNING:
HOT WHILE IN OPERATION. KEEP
CHILDREN, CLOTHING AND
FURNITURE AWAY. CONTACT MAY
CAUSE SKIN BURNS.
Please read this entire chapter before lighting
your first fire. It explains the controls and
features of your wood stove, how to choose
firewood, and how to use your stove on a daily
basis.
CONTROLS AND FEATURES
Before lighting any fires, become familiar with
the location and operation of your stove's
controls and features and learn how to use
them. For your own safety, do not modify
these features in any way.
FLUE BYPASS SYSTEM: When starting a fire
in a cold Deva 100 you will need to use the flue
bypass system. This is the handle at the top
center of your stove that pushes and pulls in
and out. To open the bypass, pull the handle
out. This opens a “bypass” channel that allows
the hot gases to heat up the chimney quicker.
This bypass allows for a direct outlet of the flue
gases and smoke. With the bypass closed the
gases follow the normal route around the oven
and then out. You should keep the bypass
open until your flue has established a draft.
Once a draft has been established push the
bypass closed. This will ensure the most
efficient use of your Deva.
*Burning the Deva 100 with the bypass open
will not allow the oven to reach maximum
temperatures.
FUEL LOADING DOOR HANDLE: The fuel
loading door allows you to load wood into your
stove. To open the door, lift the handle to the 9
o’clock position and pull the door. To latch the
door, lower the handle to the 6 o’clock position.
Pull gently on the door to make sure it is
properly latched.
OVEN

Hearthstone Quality Home Heating Products, Inc ®
Model 8220
18
PRIMARY AIR CONTROL: This feature is
located on the lower portion of the ash door of
the stove. The primary air control allows you to
regulate the amount of air entering the firebox.
Generally speaking, the more air allowed into
the firebox, the faster and hotter the rate of
burn; conversely, less air creates a slower burn.
Push the lever to the left to open the primary air
control; push the lever to the right of the stove
to close the primary air control.
ASH PAN: The ash pan is located under the
firebox door. The ash pan collects burned ash
from a fire and allows you to conveniently
remove the ash from your wood stove. The ash
pan is easy to remove. Sift the ashes across
the grate and into the ash pan, and then rotate
the ash door handle to the 9:00 o’clock and pull
to open. Remove the ash pan by grabbing the
handle and sliding it out carefully. After you
have disposed of the ashes, push the ash pan
all the way into the stove and close the ash
door by turning the handle to the 6 o’clock
position.
Remove ashes when the stove is cold. If the
ash pan is warm, use protective fireplace
gloves. Exercise extreme caution when
handling, storing or disposing of ashes.
CHOOSING FIREWOOD
Your Deva 100 cook stove is designed to only
burn firewood-also known as cordwood.
▌CAUTION:
DO NOT USE CHEMICALS OR
FLAMMABLE FLUIDS SUCH AS
GASOLINE, NAPHTHA, KEROSENE,
CHARCOAL LIGHTER FLUID OR
ENGINE OIL TO START A FIRE. DO
NOT USE CHARCOAL, PELLETS,
COAL, ARTIFICIAL LOGS OR ANY
OTHER MATERIALS AS FUEL; THEY
ARE NOT SAFE. DO NOT BURN
GARBAGE.
The quality of your firewood affects heat output,
duration of burn and performance of your stove.
Softwoods generally burn hotter and faster,
while hardwoods burn longer and produce more
coals. Density and moisture content are two
critical factors to consider when purchasing
wood for your stove.
The following is a list of wood species and their
relative BTU (British Thermal Unit) content.
The higher the BTU the longer the burn.
Firewood with higher BTUs is generally
considered more ideal for a wood stove.
HIGH: Apple, Black Birch, Hickory, Locust,
White Oak, Black Beech, Mesquite
MEDIUM HIGH: White Ash, Beech, Yellow
Birch, Sugar Maple, Red Oak
MEDIUM LOW: Black Ash, White Birch, Grey
Birch, Elm, Norway Pine, Pitch Pine, Black
Cherry, Soft Maple, Tamarack
LOW: White Pine, White Cedar, Balsam Fir,
Spruce, Aspen, Basswood, Butternut, Hemlock
Moisture content also plays a key role in the
performance of your stove. Wood freshly cut
from a living tree (green wood) contains a great
deal of moisture. As you might expect, green
wood has difficulty burning and should be
seasoned before using it in your cook stove. To
properly season green wood, it should be split,
stacked and allowed to air dry for a period of
one year.
Stack the firewood on skids or blocks to keep it
off the ground, cover only the top of the stack.
Plastic or tarps that cover the sides of the
woodpile trap moisture and prevent the wood
from drying. As for stacking, an old Vermonter
said, "The spaces between the logs should be
large enough for a mouse to get through, but
not for the cat that's chasing it."
Firewood should not be stored within the
stove's specified clearances to combustible
materials.

Hearthstone Quality Home Heating Products, Inc ®
Model 8220
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BUILDING YOUR FIRST FIRE
Once you understand the controls of your wood
stove and have chosen the appropriate
firewood, you are ready to start a fire.
When you light your first fires, the wood stove
will emit some smoke and fumes. This is
normal “off-gassing” of the paints and oils used
when manufacturing the wood stove. If you find
it necessary, open a few windows to vent your
room. The smoke and fumes will usually
subside after 10 to 20 minutes of operation.
The odor and smoke will end once the stove is
“cured”.
The first fires may produce other odors from
impurities that exist in the area immediately
surrounding the stove. Some of these
impurities can be cleaning solvents, paint
solvents, cigarettes, smoke, pet hair, dust,
adhesives, a new carpet, and new textiles.
These odors will dissipate over time. You can
alleviate these odors by opening a few windows
or otherwise creating additional ventilation
around your stove.
BUILDING AFIRE
1. Open the door and place five or six
double sheets of tightly twisted
newspaper in the center of the firebox.
Arrange kindling in a crisscross pattern
over the newspaper. Kindling should be
approximately ten pieces, 1/2" (13 mm)
in diameter and 10" to 17" (254 to 431
mm) long.
2. Open the flue bypass system by pulling
the handle out completely. (as described
on page 17)
3. Fully open the primary air control by
pushing the lever toward the left of the
stove.
4. Light the paper under the kindling.
Leave the door slightly ajar momentarily
until the kindling has started to burn and
draft begins to pull.
5. Close the door and allow the fire to
burn.
6. Once the kindling is burning, open the
door and add logs, small at first, to build
the fire up. Otherwise, keep the fuel
loading door and ash door closed while
the stove is in use.
7. Close the bypass system by pushing the
handle all the way in.
8. Once the fire is burning well, use the
primary air control to regulate the
desired rate of burn. Pushing the lever
to the left of the stove opens the
PRIMARY AIR CONTROL for a high
rate of burn or pushing it to the right of
the stove for a low rate of burn.
9. The flue bypass is used to control the
cook top and oven temperature.
Note: When opening the door to reload
or re-arrange logs, it is advisable to open
the door just a crack, pause for a
moment, then open the door completely.
This procedure will allow the firebox to
clear of smoke before the door is opened
fully. You must open the flue bypass
system prior to opening your fuel
loading door. Also, reloading on a bed of
hot, red coals reduces smoking time and
will bring fresh fuel up to a high
temperature rapidly.
Do not open the fuel loading
door with the bypass closed!

Hearthstone Quality Home Heating Products, Inc ®
Model 8220
20
BURN RATE
HIGH BURN: Fully load the firebox with wood
on a bed of hot coals or on an actively flaming
fire and fully open the primary air control. A
high burn rate is recommended once or twice a
day to fully heat the stovepipe and chimney,
which will help minimize creosote accumulation.
MEDIUM BURN: Set the primary air control to a
mid-range setting appropriate for the heating
needs of the area being heated. A medium
burn rate should be the typical setting and is
preferable if the stove is to be left unattended.
LOW BURN: Close the primary air control for a
low burn rate. A low burn rate over extended
periods of time is not advisable as it may
promote the accumulation of creosote. The
venting system should be inspected frequently
if low burn rates are maintained consistently.
OVER-FIRE CAUTION
Over-firing means the stove is operating at
temperatures above the recommended
temperatures outlined above in the BURN
RATE section. Over-firing should be carefully
avoided since it will cause damage to the stove.
Symptoms of over-firing include short burn
times, a roaring sound in the stove or
stovepipe, and discoloration of the stovepipe.
Over-firing can be caused by excessive draft,
inappropriate fuel, and operator error. Correct
an over-fire situation as follows:
EXCESSIVE DRAFT: Contact your dealer to
have a draft reading taken. Any draft in excess
of 0.1 wc requires a damper in the stovepipe.
Some installations may require more than one
damper.
INAPPROPRIATE FUEL: Do not burn coal, kiln
dried lumber, wax logs or anything other than
natural cordwood.
OPERATOR ERROR: Make sure all the
gaskets are in good condition. Replace worn
out or compressed gaskets. Do not burn the
stove with the fuel loading door, or ash pan
door in the open position.
Monitoring the temperature is the best way to
determine that the stove is over-firing. If you
suspect that your stove is over-firing, contact
your dealer immediately. Damage done by
over-firing is not covered by your warranty.
Results of over-firing can include: warped or
burned out internal parts, cracked refractory,
discolored or warped external parts, and
damaged enamel.
NOTE: ANY SYMPTOMS OF OVER-FIRING
WILL VOID YOUR WARRANTY!!
REMOVAL AND DISPOSAL OF ASHES
Ashes should be removed when the stove is
cold. Use protective fireplace gloves when the
pan is warm. Exercise extreme caution when
handling, storing or disposing of ashes.
To remove ashes from the firebox, sift the
ashes across the ash grate using a poker or
other suitable implement. Remove the ashes
by pulling the handle on the ash pan and sliding
it carefully out. Dump the ashes as described
below. Re-insert the ash pan by pushing it in all
the way. Be sure that the ash pan has been
pushed firmly into place. Alternately, the ashes
can be removed with a shovel through the fuel
loading door.
Ashes should be dumped from the ash drawer
into a metal container with a tight fitting lid. Do
not place any other items or trash into the metal
container. Replace the lid onto the container
and allow the ashes to cool. Do not place the
ash disposal container on a combustible
surface or vinyl flooring, as the container will be
hot!
Pending disposal, place the closed ash
container on a noncombustible floor or on the
ground, well away from all combustible
materials. Ashes should be retained in the
closed container until all cinders have
thoroughly cooled.
Ashes should NEVER be placed in wooden or
plastic containers, or in paper or plastic bags,
no matter how long the fire has been out.
Coals within a bed of ashes can remain hot for
several days once removed from the firebox.