HearthStone Deva 100 User manual

Deva 100 (8220)
Wood-fired cookstove
OWNER'S MANUAL
INSTALLATION AND OPERATING
INSTRUCTIONS
PLEASE READ THIS ENTIRE OWNER’S MANUAL BEFORE YOU INSTALL AND USE
YOUR NEW Deva WOOD 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!
Deva 100 Model# 8220
6400-40460
Revised 10-12-07
CONTACT LOCAL AUTHORITIES HAVING
JURISDICTION (BUILDING DEPARTMENT or FIRE
OFFICIALS) ABOUT PERMITS REQUIRED,
RESTRICTIONS AND INSTALLATION INSPECTION
IN YOUR AREA.

HearthStone Quality Home Heating Products Inc ®2Model 8220

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TABLE OF CONTENTS
INTRODUCING YOUR DEVA 100 COOKSTOVE ............................................................................ 4
CODES...................................................................................................................................................... 5
SAFETY INFORMATION ............................................................................................................................. 5
Periodic Checklist ........................................................................................................................... 6
Emergency Procedures.................................................................................................................... 7
SPECIFICATIONS ....................................................................................................................................... 8
SETTING UP YOUR DEVA 100 COOKSTOVE.................................................................................. 9
UNPACKING ............................................................................................................................................. 9
INSTALLING YOUR STOVE........................................................................................................................ 9
HEARTH REQUIREMENTS AND FLOOR PROTECTION .............................................................................. 10
CLEARANCES TO COMBUSTIBLES .......................................................................................................... 10
Components of a Venting System................................................................................................. 12
Installing a Venting System .......................................................................................................... 13
CONNECTING YOUR WOOD-FIRED COOKSTOVE ..................................................................................... 14
Connecting to a Prefabricated Metal Chimney............................................................................. 14
OPERATING YOUR DEVA 100 WOOD STOVE.............................................................................. 19
CONTROLS AND FEATURES.................................................................................................................... 19
CHOOSING FIREWOOD............................................................................................................................ 20
BUILDING AFIRE................................................................................................................................... 21
Building A Fire For Everyday Use ............................................................................................... 21
Burn Rate ...................................................................................................................................... 22
Over-Fire Caution ......................................................................................................................... 22
Removal And Disposal Of Ashes ................................................................................................. 22
MAINTENANCE ................................................................................................................................. 23
Creosote Formation And Need For Removal ............................................................................... 23
Gaskets.......................................................................................................................................... 23
Glass.............................................................................................................................................. 24
Cast Iron........................................................................................................................................ 25
TROUBLESHOOTING........................................................................................................................ 25
TROUBLESHOOTING GUIDE .................................................................................................................... 26
REPLACEMENT PARTS &OPTIONAL ACCESSORIES ................................................................................ 27
SAFETY LABEL....................................................................................................................................... 28

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Introducing Your
Deva 100 Wood-fired Cookstove
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 Cookstove.
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
cookstoves 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
cookstove. Be sure to maintain the designated
stovepipe and cookstove 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 cookstove 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 cookstove 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
COOKSTOVE 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 cookstove is manufactured and warranted
by: HearthStone Quality Home Heating
Products Inc®
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 cookstoves 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.)

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Never modify this cookstove in any way.
Never burn kiln dried wood, painted or
treated wood, solvents, trash, plywood,
colored or glossy paper, artificial logs,
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 cookstove.
Never over-fire your cookstove. (See page
22)
Never put articles of clothing or candles on
a hot cookstove.
Do not connect the cookstove 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 cookstove
(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 22)
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

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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.
•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 cookstove 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 cookstove 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
Wood Stove
UNPACKING
HearthStone packages your Deva 100 cookstove
with the greatest care, so that it ships safely.
Under certain circumstances, however, damage
can occur during transit and handling. When
you receive your cookstove, 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 Cookstove 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 cookstove. 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 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
CLEARANCES TO COMBUSTIBLES
Please use this section to plan the layout
for your stove. Consider clearance of pipe
to combustibles and cookstove to
combustibles.
You must follow minimum clearances for the
Deva 100 cookstove to combustibles such as
walls and ceilings. You may reduce the general
clearances if installing the stove near Protected
Surfaces.

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Figure 2. Clearance to Combustibles
MINIMUM CLEARANCES TO COMBUSTIBLES (from closest point of stove)
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)
Clearances 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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DOUBLE WALL CONNECTORSINGLE WALL CONNECTOR
CLEARANCE TO COMBUSTIBLES
CHIMNEY CONNECTOR
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.

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oDouble 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.
oChimney 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.
oIt 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 cookstove 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 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 cookstove) when
you periodically inspection the stovepipe
connection and chimney.

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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
COOKSTOVE
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.

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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
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HearthStone Quality Home Heating Products Inc ®Model 8220
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Ash Pan
Door
Primary Air
Control
Oven
Thermometer
Flue Bypass
Fuel Loading
Door
Oven Door
Figure 2 Controls and Features
Operating Your Deva
Wood Stove
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.

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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, 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 cookstove 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 cookstove. 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.