Hearthstone 8660 User Manual
CONTACT LOCAL AUTHORITIES WITH JURISDICTION (BUILDING DEPARTMENT or FIRE
INSPECTION IN YOUR AREA.
Green Mountain 60
(Model 8660)
Woodstove
OWNER'S MANUAL
Installation And
Operating Instructions
SAVE THIS OWNER’S MANUAL
FOR FUTURE REFERENCE
PLEASE READ THIS ENTIRE OWNER’S M ANUAL BEFORE YOU INSTALL AND USE YOUR
NEW GREEN MOUNTAIN 60 WOOD STOVE .
If this room heater is not properly installed, a house fire may result.
To reduce the risk of fire, follow the installation instructions.
Failure to follow these instructions can result in property damage, bodily injury, or even death.
Conforms to UL Std. 1482
Certified to ULC Std. S627
OFFICIALS), ABOUT PERMITS REQUIRED, RESTRICTIO NS AND INSTALLATION
Green Mountain 60 (Model 8660)
Manual: 6400-41408
R: 02/6/2020
2
NOTES ON STOVE OPERATION AND EFFICIENCY
Rating:
You have purchased a Hearthstone Green Mountain 60 tested to EPA Method 28R 4 0 C FR Part 60 where applicable. This
stove is certified to comply with the U.S. Environmental Protection Agency 2020 particulate emissions standard using crib
wood. It is certified at 0.6 gr/hr. emission rate and under specific test conditi ons has been shown to deliver heat at rates
ranging from 12,600 to 33,600 Btu ( output).
This wood heater has a manufacturer-set minimum allowable low burn rate that must not be altered. It is against feder al
regulations to alter this setting or otherwise operate this wood heater in a m anner inconsistent with operating instructions in
this manual.
Please refer to the Warranty section of this manual for registration instr uctions. In case of warranty claims, please contact
the point of original sale or the nearest authorized Hearthstone dealer . Our dealer network processes all warranty claims.
Authorized Hearthstone dealers c an be located at www.hearthstonestoves.com
This heater is designed to burn natural wood only. Higher efficiencies and lower emissions generally result when burning
air-dried seasoned hardwoods , as compared to softwoods or to green or freshly cut hardwoods. DO NOT BURN: Garbage,
lawn clippings, material containing rubber (including tires), materials containing plastic, waste petr oleum products paints or
paint thinners, asphalt products, materials containing asbestos , construction or demolition debris, railroad ties, pressure
treated wood, manure or animal remains, salt water driftwood or other previously salt water saturated materials, unseasoned
wood, paper products, cardboard, plywood or particleboard. T his prohibition against burning these materials does not
prohibit the use of fire starters made from paper, cardboard, sawdust, wax and similar substances for t he purpose of starting
a fire in an affected wood heater. Burni ng these materials may result in a release toxic fumes or render the heater ineffective
and cause smoke.
Following the maintenance guidelines set forth in this manual will help insure the efficient use of your wood heater and
minimize visible emissions. Having your stove inspected by a trained professional on a regular basis will greatly increase the
potential for recognizing potential impacts to efficiency.
Proper draft is important to the efficient operation of your heater. Refer to the Normal Operation section of this manual for
information regarding adequate dr aft. Both excessive and sub-minimum draft can affect the efficiency of your wood heater.
Excessive draft can lead to over-consumption of fuel, lower overall heating capacity of the stove and potent ial over firing.
Low draft can result in inefficient bur ns, low heat output, expulsion of smoke into the living area when stove doors are
opened and an increased potential f or build-up of flammable materials i n the flue.
Efficiency:
Efficiency was measured and weighted using EPA Method 28R and CSA B415-10 methodology. A weighted average was
used to calculate the overall efficiency across all of the 4 burn rate categ or ies using the higher heating value (HHV). The
weighted average efficiency is 79% (HHV).
To maximize the efficiency of your wood stove make sure it is sized properl y for the space you plan to heat. An ov ersized
stove will often be forced to burn at a lower and dirtier burn rate. Consult with your dealer for sizing and corr ec tly placing the
stove in your home. An incorrectl y placed stove can greatly reduce efficien cy. Maximizing the efficiency of your s tove will
heat your house quickly, burn cleaner and use less wood.
Refer to the Choosing Firewood sect ion of this manual for appropriate fuel s el ec tion. Seasoned firewood is typically at or
near 20% moisture content. This can be m easured with any number of hand-held moist ure meters available through your
local hearth shop. Follow instructions included in the meter you purchase to measure fuel wood moisture content. Burn only
dry, seasoned wood as using wet woo d will greatly reduce your efficiency.
CO Emissions:
The Green Mountain 60 has the following CO emission rates by burn level: Category 1 (low) –9.0 g/hr., Category 2 (med.
low) – 21.0 g/ hr., Category 3 (med. high) – 33.0 g/hr. and Category 4 – 51.6 g/hr. Wet wood or unapproved fuel described
above can greatly affect the emissions of a wood burning stove.
Smoke/Fire/CO Detectors:
It is highly recommended that smoke and CO detectors be installed throughout the heated space when a wood burning
heater is installed. Be certain to install these devices not only in the area where the wood appliance is located, but also in
bedrooms, hallways leading to other areas of the house and all common areas of the heated space. Check the batteries i n
these devices and assure operation by performing whatever test operations are recommended by the manufacturer.
.
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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TABLE OF CONTENTS
INTRODUCTION ..................................................................................................................... 4
CODES ................................................................................................................................................................... 5
SAFETY INFORMATION ............................................................................................................................................ 5
PERIODIC CHECKLIST ............................................................................................................................................. 6
EMERGENCY PROCEDURES .................................................................................................................................... 6
SPECIFICATIONS .................................................................................................................. 7
INSTALLATION ...................................................................................................................... 8
UNPACKING ............................................................................................................................................................ 8
PACK LIST .............................................................................................................................................................. 8
INSTALLING YOUR STOVE........................................................................................................................................ 8
HEARTH REQUIREMENTS & FLOOR PROTECTION...................................................................................................... 9
COMBUSTIBLE SURFACE REQUIRED CLEARANCES ................................................................................................. 10
CHIMNEY CONNECTOR SYSTEMS AND CLEARANCES FROM COMBUSTIBLE WALLS .................................................... 12
OUTSIDE AIR SUPPLY ........................................................................................................................................... 13
VENTING COMPONENTS & CONFIGURATION REQUIREMENTS ................................................................................... 14
INSTALLING IN A MOBILE HOME ............................................................................................................................. 18
OPERATION ......................................................................................................................... 19
CONTROLS AND FEATURES ................................................................................................................................... 19
BUILDING A FIRE .................................................................................................................................................. 21
BREAKING IN YOUR WOOD STOVE ........................................................................................................................ 21
NORMAL OPERATION ............................................................................................................................................ 22
CATALYTIC COMBUSTOR OPERATION .................................................................................................................... 23
MAINTENANCE .................................................................................................................... 25
CATALYTIC COMBUSTOR INSPECTION AND REPLACEMENT PROCEDURES ................................................................ 25
INSPECTING THE CATALYSTS ................................................................................................................................. 25
REPLACING THE CATALYSTS .................................................................................................................................. 26
REPLACING THE BAFFLE ........................................................................................................................................ 26
REPLACING THE REFRACTORY STONE AND SECONDARY RISER ASSEMBLY ................................................................ 27
GLASS REPLACEMENT PROCEDURES .................................................................................................................... 28
CREOSOTE FORMATION & REMOVAL ..................................................................................................................... 29
GASKETS ............................................................................................................................................................. 29
GLASS ................................................................................................................................................................. 29
TROUBLESHOOTING .......................................................................................................... 30
TROUBLESHOOTING GUIDE ................................................................................................................................... 31
REPLACEMENT PARTS & OPTIONAL ACCESSORIES ................................................................................................. 33
SAFETY LABEL ................................................................................................................... 34
WARRANTY .......................................................................................................................... 35
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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INTRODUCTION
Thank you for purchasing a Green Mountain 60
woodstove from Hearthstone Quality Home Heating
Products. This stove will provide years of
comfortable heat. This stove combines the warmth
and comfort of soapstone and cast iron with the
efficiency of advanced catalytic technology. The
Green Mountain 60 blends modern technology with
the unique beauty and qualities of cast iron. We trust
that you will appreciate the quality of this
handcrafted product.
Your Green Mountain 60 woodstove burns very
efficiently, and produces a large amount of heat.
However, you should not consider your Green
Mountain 60 the primary heat source for your home.
The Green Mountain 60’s large glass window allows
you to enjoy the fire from a variety of locations in the
room.
Please read this manual in its entirety. Its purpose is
to familiarize you with your stove's safe installation,
proper break-in, operation and maintenance. It
contains extremely important information so keep it
handy and refer to it often.
A qualified heating technician may need this owner’s
manual as a reference when installing this stove in
your home. There are national, state, and local
building codes that direct the technician on how to
install your stove. These codes stipulate the
dimension of stovepipe and clearances to walls,
ceilings, hearth, and other combustible surfaces.
The codes exist to reduce the risk of fire. Failure to
follow these instructions can result in fire, property
damage, bodily injury, and even death.
• SAFETY NOTICE:
AN IMPROPERLY INSTALLED STOVE CAN
RESULT IN A HOUSE FIRE. FOR YOUR SAFETY,
CAREFULLY FOLLOW THE INSTALLATION
DIRECTIONS. CONTACT LOCAL BUILDING OR
FIRE OFFICIALS ABOUT RESTRICTIONS AND
INSTALLATION INSPECTION IN YOUR AREA.
The safety of your stove will depend on many
factors, some of which include: distance to
combustible objects, correct venting, and adequate
chimney maintenance. Should you have any
questions, do not hesitate to contact your dealer for
additional information.
Contact your dealer for any necessary warranty
service.
This Green Mountain 60 Model 8660 stove is
warranted by:
Hearthstone
Quality Home Heating Products, Inc®
317 Stafford Ave.
Morrisville, Vermont 05661, USA
www.Hearthstonestoves.com
Install the stove in a safe, open area, away from
traffic flow, doors, and hallways. If possible, try to
install the stove near an existing chimney and
chimney connector. It is extremely important to
install this stove with the proper clearance from
combustible surfaces. You can purchase specific
connector pipe and special wall coverings as
specified by this manual and the NFPA 211 code to
protect combustible surfaces. As a general rule,
keep furniture, drapes, curtains, wood, paper, and
other combustibles at least 36 inches (92 cm) away
from the stove. Never install the stove in or near a
storage location for gasoline, kerosene, charcoal
lighter fluid or any other flammable liquids.
Install the stove in your central living area to allow
heat to radiate naturally to distant rooms. Do not
install your stove in a poorly insulated area. This is
inefficient and would likely result in higher fuel
usage.
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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CODES
When you install your Green Mountain 60
woodstove, it is imperative that you adhere to all
Federal and local codes. Obtain these codes from
either of the following sources:
American National Standards Institute, Inc. (ANSI)
1430 Broadway
New York, NY 10018
www.ansi.org
National Fire Protection Assoc ia t ion , Inc. (NFPA)
Battery March Park
Quincy, MA 02269
www.nfpa.org
If you are installing your Green Mountain 60 in a
mobile or manufactured home, follow the guidelines
described in the Manufactured Home Construction
and Safety Standard, Title 24 CFR, Part 3280
(United States).
• Never use a wood grate or other device to
elevate the fire.
• Never allow logs in the firebox to hit the glass
when the door is closed.
• Never slam the door or use the door to force
wood in to the stove.
• Never over-fire your stove. (See page 24)
• Never put articles of clothing or candles on a hot
stove.
• Never connect the stove to a flue used by
another appliance.
Other safety guidelines:
• Keep all combustible items such as furniture,
drapes, clothing, and other items, at least 36"
(0.92 m) from the stove (See page 9)
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, follow these safety
precautions:
• Never modify this stove in any way.
• Never burn kiln dried, painted or treated wood in
this stove.
• DO NOT BURN GARBAGE. Never burn
garbage or trash, colored or glossy paper,
solvents, plywood, artificial logs, cardboard, or
driftwood, in this stove.
• Never burn coal in this stove.
• DO NOT BURN FLAMMABLE FLUIDS.
• DO NOT USE CHEMICALS OR FLUIDS TO
START THE FIRE. Never use gasoline,
kerosene, charcoal lighter fluid, or other
flammable fluids to start or invigorate the fire.
These fuels will cause dangerous burning
conditions in the stove. Keep all such materials
away from the stove.
• Install a smoke detector, preferably in an area
away from your wood stove.
• Keep a fire extinguisher handy. We recommend
the type rated "A B C."
• Dispose of ashes properly. (See page 23)
• Keep children and pets away from the stove
when it is burning; they could be seriously
injured by touching a hot stove.
• Clean your chimney system as needed. (See
page 29)
• Outside combustion air may be required if:
1. This solid-fuel-fired appliance does not
draw steadily, smoke rollout occurs, fuel
burns poorly, or back-drafts occur whether
or not there is combustion present.
2. Existing fuel-fired equipment in the house,
such as fireplaces or other heating
appliances, smell, do not operate properly,
suffer smoke roll-out when opened, or
back-draft whether or not there is
combustion present.
3. Opening a window slightly on a calm
(windless) day alleviates any of the above
symptoms.
4. The house is equipped with a well-sealed
vapor barrier and tight fitting windows
and/or has any powered devices that
exhaust house air.
5. There is excessive condensation on
windows in the winter.
6. A ventilation system is installed in the
house.
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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If these or other indications suggest that infiltration
air is inadequate, additional combustion air should
be provided from the outdoors. Outside combustion
air can be provided to the appliance by using the
optional outside air kit #96-53400
PERIODIC CHECKLIST
Perform each of these tasks at the specified intervals.
At the End of Every Week:
• Empty ashes from the firebox, sooner if the
firebox is full.
At the Beginning of Every Other Month:
• Depending upon your use of the stove, visually
inspect the chimney connector and chimney for
creosote. (see page 29)
• Check door seals using the "dollar bill test." -
When the stove is cool, shut the door on a dollar
bill. If the bill pulls out without any resistance,
then your stove’s door is not sealing properly. To
tighten the seal, adjust the door latch
mechanism or change the door gasket. (Refer to
page 29.)
• Inspect the face of the catalytic combustor for fly
ash and soot. Use a soft-bristled brush to
remove if present. It is recommended to visually
inspect the catalytic combustor at least 3 times
during the heating season, or every 2-3 months.
At the End of Every Season:
• 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.
• Clean out the inside of the stove thoroughly.
• Check and clean the catalytic combustor, if
necessary
• Inspect all door gasket material and replace if
worn, frayed, cracked or extremely hard.
• 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 OF SUCH FIRES CAN CAUSE
INSTANTANEOUS STEAM AND SERIOUS BODILY
HARM.
Once the chimney fire expires, leave the primary air
control and bypass handle closed and let the fire in
the stove die out completely. Inspect the stov e,
stovepipe, and chimney thoroughly for any sign of
damage before firing the stove again. You must
correct any damage before using your stove again.
Establish a routine for the fuel, wood burner and
firing technique. Check daily for creosote build-up
until experience shows how often you need to clean
to be safe. Be aware that the hotter the fire the less
creosote is deposited, and weekly cleaning may be
necessary in mild weather even though monthly
cleaning may be enough in the coldest months.
Contact your local municipal or provincial fire
authority for information on how to handle a chimney
fire. Have a clearly understood plan to handle a
chimney fire.
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. Close the bypass damper
5. Keep the stove front door closed!
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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SPECIFICATIONS
Maximum Heat Output:
60,000 BTUs per hour of cordwood (based on
independent laboratory test results).
Floor Size of Heated Area:
Up to a maximum of 2,000 square feet. Factors
unique to your home can reduce the square
footage the stove will heat. Home insulation
value, number and efficiency of windows, floor
plan, stove placement, quality of the fuel and
other conditions may limit the heating ability of
the stove.
Firebox Capacity:
2.0 cubic feet.
Maximum Log Length: Up To 18” (45.7cm).
Emissions: 0.6 g/hr.
Burn Time: Up to 24+ hrs. (Heat Life™: Up to 30
hours) Note: The amount and weight of wood
contained per cubic foot of firebox volume can
vary from 10 to 25 lbs. per cubic foot depending
on type of wood, moisture content, packing
density and other factors.
Stove Dimensions:
Height: 31 1/2” (80.0cm)
Width: 26" (66.0cm)
Depth: 21 1/4" (54.0cm)
Weight: 494 lbs. (269 kg)
Connector Size: 6" (152 mm) diameter
Metal Chimney: 6" (152 mm) inside diameter
Masonry Chimney: 6” (152 mm) inside diameter
(round flue), 8” x 8” (203 x 203 mm) (square
flue)
Crate Dimensions: H-40” W-29” L-36” or
102x74x 92cm
Optional Equipment:
Outside Air Kit 96-53400
Blower Kit 96-57400
Figure 1 – Green Mountain 60 Dimensions
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
8
INSTALLATION
UNPACKING
INSTALLING YOUR STOVE
Hearthstone packages your Green Mountain 60
woodstove with the greatest care so that it ships
safely. Under certain circumstances, however,
damage may occur during transit and handling.
When you receive the Green Mountain 60, carefully
unpack and inspect the stove and all accompanying
parts. Ensure that all parts are included with the
stove. If any parts are damaged or missing, please
contact your authorized Hearthstone dealer
immediately.
Be sure to remove the packaging material in the flue
collar before installing the chimney.
A separate box underneath the stove contains some
of the internal parts. There is an instruction sheet for
installing these parts inside the box.
PACK LIST
Green Mountain 60 Model 8660 Woodstove
Owner’s Manual
Parts Box
The label is attached by a cable to the bottom of t he
stove. Take care when lifting the stove not to
damage the label or cable. After final positioning of
the stove, the label may be stored in the holding clip
on the bottom shield of the stove.
Figure 2 - Label Location
Choose a place to install your Green Mountain 60
woodstove. Consider the location of your stove for
optimum heating efficiency. In general, it is better to
place your stove in a main living area, rather than in
a basement or other confined space.
Inspect this location to make sure that the stove and
stovepipes will have the required clearance from
combustible materials that are near the stove.
Combustibles include walls, floor, ceiling, and
chimney chase. You must carefully consider the
clearances to all of these combustibles before
actually connecting your stove.
If the floor is made of combustible material, then a
non-combustible floor protector is required between
the floor and the stove. An example of a noncombustible floor protector is a hearth constructed
with a continuous layer of tile, brick, slate, glass or
another non-combustible facing. There is no R-value
requirement.
If you use a rear connector pipe, ensure it is listed
with Underwriter’s Laboratories. Check the listing of
your pipe with UL for the correct clearances.
The diagrams in this manual represent typical
installations, but are specific to the Simpson DuraVent DVL brand.
Clearances to NFPA Code 211 Protected
Surfaces
You can reduce the clearances to combustible
surfaces by using any National Fire Protection
Agency (NFPA) approved wall protection system
with additional approval of the regulatory authority
having jurisdiction in your area. Please refer to
NFPA Code 211 for specifications and complete
details. You can obtain this information directly from
the NFPA.
National Fire Protection Agency
Batterymarch Park
Quincy, MA 02269
1-800-344-3555
1-617-770-3000
www.nfpa.org
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
9
HEARTH REQUIREMENTS & FLOOR PROTECTION
Ensure you protect combustible flooring with a covering of noncombustible material. The Green Mountain 60
does not require an insulated hearth pad. The minimum floor protection mus t be met under the stove and extend
beyond the stove as follows:
The minimum floor protection for US installati ons is 33 1/4in x 31-1/2in.
The minimum floor protection for installations in Canada is 42in x 43 1/2in.
Figure 3 – Hearth Dimensions
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
10
COMBUSTIBLE SURFACE REQUIRED CLEARANCES
Parallel
Corner
Corner
Clearances
A B C D E
F
Single wall Connector – Inc. Rear Heat Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Single Wall Connector – With Blower Kit Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Double Wall Connector – Inc. Rear Heat Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Double Wall Connector – With Blower Kit Shield
13”-33cm
5”-13cm
10”-26cm
26”-66cm
7”-18cm
18.5”-47cm
Alcove W/Single Wall Conn – Inc. Rear Heat Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Alcove W/Single Wall Conn – With Blower Kit Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Alcove W/Dbl Wall Conn – Inc. Rear Heat Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Alcove W/Dbl Wall Conn – With Blower Kit Shield
13”-33cm
11”-28cm
16”-41cm
26”-66cm
7”-18cm
18.5”-47cm
Alcove Clearances (inches)
Unprotected Surfaces
Protected Surfaces (NFPA-211)
Minimum alcove width
52” – 132.1cm
See NFPA-211
Min. Alcove ceiling from floor with single wall connector
61.5” – 156.2cm
See NFPA-211
Min. Alcove ceiling from floor with double wall conn ector
61.5” – 156.2cm
See NFPA-211
Note: Dimensions shown in the following figures are from the body of the st ove unless otherwise indicated.
It is very important to follow minimum clearances for chimney connectors to combustibles such as walls and
ceilings when installing the stove near combustible su rfaces.
Figure 4 – Clearance to Combustibles
FOR BLOWER KIT, USE KIT #96-57400
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
11
Single Wall Pipe
Double Wall Pipe
Through the wall top flue exit
With Blower Kit
Shield**
Inc. Rear Heat
Shield
With Blower Kit
Shield**
Inc. Rear Heat
Shield
A
11” (28cm)
11” (28cm)
5” (13 cm)
11” (28 cm)
B
16” (41 cm)
16” (41 cm)
10” (26cm)
16” (41cm)
*For double wall pipe clearance to ceiling,
refer to pipe manufacturer specifications.
** FOR BLOWER KIT, USE KIT #96-57400
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
Figure 5 Chimney Connector Clearances
See Parallel Clearance to Combustibles for
clearances to the sides of the stove.
12
CHIMNEY CONNECTOR SYSTEMS AND
CLEARANCES FROM COMBUSTIBLE WALLS
RESIDENTIAL HEATING APPLIANCES
FOR
A. Minimum 3.5in thick brick masonry all framed
into combustible wall with a minimum of 12in.
brick separation from clay liner to combustibles.
The fire clay liner shall run from outer surface of
brick wall to, but not beyond, the inner surface
of chimney flue liner and shall be firmly
cemented in place.
B. Solid-insulated, listed factory-built chimney
length of the same inside diameter as the
chimney connector and having 1in. or more of
insulation with a minimum 9in. air space
between the outer wall of the chimney length
and combustibles.
C. Sheet steel chimney connector, minimum 24
gauge in thickness, with a ventilated thimble,
minimum 24 gauge in thickness, having two 1in.
air channels, separated from combustibles by a
minimum of 6in of glass fiber insulation.
Opening shall be covered, and thimble
supported with a sheet steel support, minimum
24 gauge in thickness.
D. Solid insulated, listed factory-built chimney
length with an inside diameter 2in. larger than
the chimney connector and having 1in. or more
of insulation, serving as a pass-through for a
single wall sheet steel chimney connector of
minimum 24 gauge thickness, with a minimum
2in. air space between the outer wall of
chimney section and combustibles. Minimum
length of chimney section shall be 12in.
chimney section spaced 1in. away from
connector using sheet steel support plates on
both ends of chimney section. Opening shall be
covered, and chimney section supported on
both sides with sheet steel supports securely
fastened to wall surfaces of minimum 24-gauge
thickness. Fasteners used to secure chimney
section shall not penetrate chimney flue liner.
Hearthstone Quality Home Heating Products, Inc ® Green Mountain 60 (Model 8660)
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