Vermont Casting 1920 User Manual

The Aspen

Woodburning Stove

Model 1920

Homeowner’s
Installation
and Operating
Manual

For use in the
United States and Canada

SAFETY NOTICE: IF THIS APPLIANCE IS NOT PROPERLY INSTALLED, OPERATED AND MAIN
TAINED, A HOUSE FIRE MAY RESULT.
TO REDUCE THE RISK OF FIRE, FOLLOW THE INSTALLATION INSTRUCTIONS. FAILURE TO
FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY OR EVEN
DEATH. CONTACT LOCAL BUILDING OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION
INSPECTION REQUIREMENTS IN YOUR AREA.

Do Not Discard This Manual: Retain for Future Use

30000369 2/07 Rev. 13

-

Aspen Woodburning Stove

Introduction

Thank you for choosing a Vermont Castings Aspen to meet your heating needs. We’re confident you will find the
Aspen to be an effective wood-burning heater incorporating modern, non-catalytic combustion technology with the
classic aesthetic appeal of its Vermont Castings lineage.

The Aspen achieves high-efficiency through precisely calibrated delivery of primary and secondary air into a refrac
tory-insulated firebox. Properly operated and maintained according to the guidelines in this manual, your Aspen will
provide safe, dependable, and economical heating for years to come.

The Aspen Model 1920 has been tested and is listed by Intertek Testing Services/Warnock Hersey
of Middleton, Wisconsin. The test standards are ANSI/UL-1482 for the United States and ULC S627
and CAN/CSA B366.2 for Canada.

The Aspen Model 1920 is listed for burning wood fuel only. Do not burn other fuels.

The Aspen Model 1920 is approved for installation in manufactured (mobile) homes in the United States only using
the optional Mobile Home Kit #1898 in accordance with the instructions in that kit and any local codes.

The Aspen Model 1920 complies with the standards set forth by the Federal Environmental Protection Agency, 40
CFR Part 60.532(b)(2), as stated on the permanent label attached to each stove.

We recommend that you hire a professional, solid-fuel stove technician to install your Aspen, or to advise you on the
installation should you attempt to install it yourself. Consult the authority having local jurisdiction (such as a munici­pal building department, fire department, fire prevention bureau, etc.) before installation to determine the need for a
building permit. Also, consult your insurance agent to be sure your installation complies with specific requirements that
may vary locally.

In addition to directions on installation and operation, this manual includes directions on maintenance and assembly.
Please read this entire manual before you install or operate your new room heater.

Save These Instructions For Future Reference.

-

Table of Contents

Specifications .....................................3

Installation Requirements ...................4

Clearances .........................................12

Assembly ...........................................15

Operation ............................................17

Maintenance ....................................... 21

Appendix - Draft Management ...........24

Replacement Parts ............................. 27

Warranty ............................................

31

Proposition 65 WARNING: Fuels used in gas,
woodburning or oil fired appliances, and the prod­ucts of combustion of such fuels, contain chemicals
known to the State of California to cause cancer,
birth defects and other reproductive harm.
California Health & Safety Code Sec. 25249.6

2

30000369

Specifications

15"

(381 mm)

24"

(610 mm)

Top Exit

Flue Collar

Height

16"

(406 mm)

22

"

(570 mm)

7"

(184 mm)

18"

(457 mm)

23"

(584 mm)

C

L

6"

(152 mm)

7"

(191 mm)

22"

(565 mm)

Aspen, Model 1920

EPA Emissions rating ............... 4.3 (g/h, non-catalytic)*

Maximum heat output ..........................18,000 Btu’s/hr.

Area heated ....................... Up to 600 sq. ft. (56 sq. m)

Fuel size/type ......................................16” (41 cm) logs

Loading ..................................................................Front

Chimney connector .................... 6” (152 mm) diameter

Chimney flue size .......................

Flue exit position ....................... Reversible, top or rear

Primary air ... Manually set, thermostatically maintained

Ash handling system .....................Removable ash pan

Glass panel ......................... High-temperature ceramic

Weight ..................................................

Width (Left leg - Right leg) ....................... 16” (406 mm)

Depth (Front leg - Rear leg) .................... 23” (584 mm)

Height to top of top exit flue collar ...........

Height to top of rear exit flue collar ..........

6” (152 mm) minimum

240lbs. (576kg)

24” (610 mm)
21” (533 mm)

Aspen Woodburning Stove

1

This value can vary depending on how the stove is op-

1

2

erated, the type and moisture content of the fuel used,
as well as the design, construction and climatic location
of your home. Figures shown are based on maximum
fuel consumption obtained under laboratory conditions
and on average efficiencies.

2

These values are based on operation in building code­conforming homes under typical winter climate condi­tions in New England. If your home is of nonstandard
construction (e.g., unusually well insulated, not insu­lated, built under ground, etc.) or if you live in a more
severe or more temperate climate, these figures may
not apply. Since so many variables affect performance,
consult your Vermont Castings authorized dealer to
determine realistic expectations for your home.

Fig. 1 Aspen 1920 specifications.

30000369

3069

3

Aspen Woodburning Stove

2' Min.

2' Min.

3'

Min.

0 To 10'

3'

Min.

0 To 10'

Installation

SAFETY NOTICE: IF YOUR STOVE IS NOT PROP
ERLY INSTALLED, OPERATED AND MAINTAINED, A
HOUSE FIRE MAY RESULT. FOR SAFETY, FOLLOW
ALL INSTALLATION, OPERATION AND MAINTE­NANCE DIRECTIONS. CONTACT LOCAL BUILDING
OFFICIALS ABOUT RESTRICTIONS AND INSTAL­LATION INSPECTION REQUIREMENTS IN YOUR
AREA.

Before you begin an installation, review your plans to
be certain that:

• Your stove and chimney connector will be far enough

from combustible material to meet all clearance
requirements.

• The floor protector is large enough and is constructed

properly to meet all requirements.

• You have all necessary permits from local authorities.

Your local building official is the final authority for ap­proving your installation as safe and determining that it
meets local and state codes.

The metal label permanently attached to the back of
the stove indicates that the Aspen has been tested to
current UL and ULC standards by Intertek Testing Ser­vices of Middleton, Wisconsin. Clearance and installa­tion information is also printed on the label. Local au­thorities generally will accept the label as evidence that,
when the stove is installed according to the information
on the label and in this manual, the installation meets
codes and can be approved. Codes, however, vary in
different areas. Before starting the installation, review
your plans with the local building authority. Your local
dealer can provide any additional information needed.

For any unresolved questions about installation, refer
to the National Fire Protection Association’s publication
ANSI/NFPA 211–1988 Standard for Chimneys, Fire­places, Vents and Solid Fuel Burning Appliances. In
Canada, the equivalent publication is CSA CAN-B365,
Installation Code for Solid Fuel Burning Appliances and
Equipment. These standards are the bases for many
national codes. They are nationally recognized and are
accepted by most local authorities. Your local dealer
or your local building official may have a copy of these
regulations.

IMPORTANT:
instructions may result in a dangerous situation, in­cluding a chimney or house fire. Follow all instruc­tions exactly and do not allow makeshift compro­mises to endanger property and personal safety.

4

Failure to follow these installation

-

Chimneys

Your stove must be connected either to a sound
masonry chimney that meets local codes, to a relined
masonry chimney that meets local codes, or to an
approved prefabricated metal chimney. Whichever of
those types you use, the chimney and chimney connec­tor must be in good condition and kept clean.

If you use an existing masonry chimney, it must be
inspected to ensure safe condition before the stove is
installed. Your local professional chimney sweep, build­ing inspector, or fire department official will be able to
make the inspection or direct you to someone who can.

The chimney should extend at least 3’ (914 mm) above
the highest point where it passes through a roof, and at
least 2’ (610 mm) higher than any portion of a building
within 10’ (3 m).

To assure proper draft and good performance, any
chimney used with this stove should extend at least 16’
(4.9 m) above the flue collar of the stove.

Reference Point

Fig. 2 The 2’-3’-10’ Chimney Rule.

AC617

Masonry Chimneys

An existing masonry chimney must be inspected to con­firm that it has a lining. Do not use an unlined chimney.
The chimney also should be examined for cracks,
loose mortar, other signs of deterioration, and blockage.
Repair any defects before the chimney is used with
your stove.

A prefabricated double­wall insulated chimney

A tile-lined
masonry
chimney

ST241

Fig. 3 Standard Chimney Types

30000369

Aspen Woodburning Stove

Masonry Chimneys, cont’d.

• Unused openings in an existing masonry chimney

must be sealed with masonry to the thickness of
the chimney wall, and the chimney liner should be
repaired. Openings sealed with pie plates or wallpa­per are a hazard and should be sealed with mortar
or refractory cement. In the event of a chimney
fire, flames and smoke may be forced out of these
unused thimbles.

• The chimney should be thoroughly cleaned before

use.

• A newly-built masonry chimney must conform to the

standards of local building code, or, in the absence
of a local code, to a recognized national code. Ma­sonry chimneys must be lined, either with code-ap­proved masonry or precast refractory tiles, stainless
steel pipe, or a code-approved, “poured-in-place”
liner. The chimney clean-out door must seal tightly to
ensure a good draft.

Prefabricated Chimneys

A prefabricated metal chimney must be one that is test­ed and listed for use with solid-fuel burning appliances
to the High-Temperature (H.T.) Chimney Standard
UL-103-1985 (2100°F.) for the United States, and High
Temperature (650°C) Standard ULC S-629 for Canada.

Chimney Size

This stove is approved for venting into a masonry chim­ney with a nominal flue size of 8” x 8” (203 x 203 mm),
and into a round flue size of 8” (203 mm) or 6” (152
mm).

It may be vented into larger chimneys as well. However,
chimneys with liners larger than 8” x 12” (203 x 305 mm)
may experience rapid cooling of smoke and reduction
in draft, especially if they are located outside the home.
Such large chimneys may need to be insulated or have
the flue relined for proper stove performance.

Do not connect this unit to a chimney flue serv­ing another appliance.

NOTE: Do not vent this stove into a factory-built
(zero-clearance) fireplace. This stove has not
been tested and listed for that type of installa­tion. Factory-built fireplaces and their chimneys
are specifically designed as a unit for use as
fireplaces. It may void the listing or be hazard
ous to adapt them for any other use.

Do not connect the STOVE to any air distribu
tion duct or system.

-

-

Ask your dealer about components available for con­necting the stove to a steel chimney liner.

Chimney Connector Guidelines

A chimney connector is the double-wall or single-wall
pipe that connects the stove to the chimney. The chim­ney itself is a masonry or prefabricated structure that
encloses the flue. Chimney connectors are used only
to make the connection from the stove to the chimney.
They are for interior use only.

Double-wall connectors must be tested and listed for
use with solid-fuel burning appliances. Single-wall con­nectors should be made of 24 gauge or heavier steel,
and should be 6” (152mm) in diameter. Do not use
galvanized chimney connector; it cannot withstand the
high temperatures that can be reached by smoke and
exhaust gases, and may release toxic fumes under high
heat.

If possible, do not pass
the chimney connector
through a combus­tible wall or ceiling. If
passage through a
combustible wall is
unavoidable, refer to
the recommendations
in the section follow­ing on Wall Pass­throughs. Do not pass
the connector through
an attic, a closet or
any similar concealed
space. The whole chimney connector should be ex­posed and accessible for inspection and cleaning.

Install the single wall chimney connector not less than
18” (457mm) from the ceiling. Keep it as short and
direct as possible, with no more than two 90 degree
turns. If possible, use 45° elbows. Slope horizontal
runs of connectors upward 1/4” per foot (20mm per
meter) going from the stove toward the chimney. The
recommended maximum length of a horizontal run is
3’ (914mm), and the total length of chimney connector
should be no longer than 8’ (2.5 meters).

In cathedral ceiling installations, extend the prefabri­cated chimney downward to within 8 feet (2.4m) of the
stove.

SAFETY NOTE: Always wear gloves and protective
eyewear when drilling, cutting or joining chimney
connector sections .

Toward
stove

Flue gas
direction

Fig. 4 Chimney connector.

30000369

5

Aspen Woodburning Stove

Double-wall Chimney Connectors

The Aspen is approved for installation in the U.S. and
Canada with double-wall chimney connectors that have
been tested and listed for use with solid-fuel burning
appliances by a recognized testing laboratory.

Follow the instructions for assembling and installing
double-wall connectors provided by the manufacturer of
the double-wall chimney. To ease assembly and help
assure safety, use chimney components manufactured
by a single source.

NOTE: For installations using double-wall connec­tors, minimum clearances must conform to those
listed in the clearance chart on Page 13.

Single-wall Chimney Connectors

• Beginning at the flue collar of the stove, assemble

the chimney connector. Insert the first crimped end
into the stove’s flue collar, and keep each crimped
end pointing toward the stove. Using the holes in the
flue collar as guides, drill 1/8” (3 mm) holes in the
bottom of the first section of chimney connector and
secure it to the flue collar with three #10 x 1/2” sheet
metal screws.

• Secure each joint between sections of chimney

connector, including telescoping joints, with at least
three sheet metal screws. The predrilled holes in
the top of each section of chimney connector serve
as guides when you drill 1/8” (3mm) holes in the bot­tom of the next section.

• Secure the chimney connector to the chimney. In-

structions for various installations follow.

• Be sure the installed stove and chimney connector

are correct distances from nearby combustible mate­rial.

NOTE: Special slip pipes and thimble sleeves that form
telescoping joints between sections of chimney con­nector are available to simplify assembly. Slip pipes
eliminate the need to cut individual connector sections.
Consult your local dealer about these special connector
sections.

Securing the Single-wall Connector to a

Prefabricated Chimney

Follow the installation instructions of the chimney
manufacturer exactly.

Special adapters are available from your local dealer to
make the connection between the prefabricated chim­ney and the chimney connector. The top of such adapt­ers attach directly to the chimney or to the chimney’s
ceiling support package. The bottom of the adapter is
secured to the chimney connector.

Thimble Sleeve

Chimney
Connector

Fig. 6 The thimble, made of either ceramic or metal, must be
cemented securely in place.

The adapter forms a union between the chimney and
chimney connector that ensures any soot or creosote
falling from the inner walls of the chimney will stay
inside the chimney connector.

Flue

Keep sleeve
end flush with
flue tile

ST243

Securing the Single-wall Connector

to a Masonry Chimney

The Aspen may be connected to either a freestanding
masonry chimney or to a fireplace masonry chimney.

Freestanding Installations

If the chimney connector must pass through a combus­tible wall to reach the chimney, follow the recommenda­tions for Wall Pass-Through construction on pages 7-8.

The opening through the chimney wall to the flue - the
“breech” – must be lined with a ceramic or metal
thimble which is securely cemented in place.

A metal pipe section called the “thimble sleeve,” slightly
smaller in diameter than standard connector and the
thimbles, will allow the removal of the chimney con­nector system for inspection and cleaning. Thimble
sleeves are available from your local dealer.

To install a thimble sleeve, slide it into the breech until
it is flush with the inner flue wall. Be sure that it does
not extend into the flue passage where it could interfere
with the draft.

The thimble sleeve should protrude 1-2” (25-50 mm)
into the room. Use furnace cement and thin gasketing
to seal the sleeve in place in the thimble. Secure the
chimney connector to the outer end of the sleeve with
sheet metal screws.

6

30000369

Connection Above the Fireplace

In this installation, the chimney connector enters the
fireplace flue though a thimble located above the fire­place. The liner of the fireplace chimney should extend
at least to the point at which the chimney connector
enters the chimney. Follow all the guidelines for install­ing a chimney connector into a freestanding masonry
chimney, and pay special attention to these additional
points:

• Check the stove and chimney connector clearances

to combustible mantel and trim materials. If neces­sary, use a combination of mantel, trim, and connec­tor heat shields to provide the required clearances.

• Double-check connector clearance to the ceiling.

• The fireplace damper must be closed and sealed to

prevent room air from being drawn up the flue which
could reduce performance. However, it must be
possible to reopen the damper to inspect or clean
the chimney.

Connection Through the Fireplace

If your fireplace opening height is at least 21¹⁄₂" (546
mm), you may install a stove through the opening us­ing a “positive connection” kit available from your local
dealer. These kits provide a secure connection be­tween the stove flue collar and the chimney flue.

Confirm that the stove location is within the required
clearance specifications for the mantel and surrounding
fireplace trim. Refer to Page 12.

Floor protection requirements also apply to fireplace
installations. Refer to Page 9.

Aspen Woodburning Stove

Chimney Connector
Heat Shield

Note clearance

*

requirement on
Pages 13-14

Fig. 7 If the clearance between the chimney connector and

either the ceiling or the mantel is inadequate, a protective
heat shield is required.

Maintain required clearance.

*

See Page 13.

*

*

Mantel

ST244

Wall Pass-throughs

Whenever possible, design the installation so that the
connector does not pass through a combustible wall.
If you must include a wall pass-through in your instal­lation, check with your building inspector before you
begin. Also check with the chimney connector manu­facturer for any specific requirements.

Consult with your dealer regarding special connection
components available for use as wall pass-throughs.
Use only parts that have been tested and listed for use
as a wall pass-through.

30000369

Flex Connector

Min. 15”
(381mm)

*

Fireplace

Adapter w/

Clean-out Tee

*

Fig. 8 Special adapter kits are available from your local

dealer to simplify fireplace installations.

16”US

18” (460 mm)Canada

ST245

7

Aspen Woodburning Stove

U.S. Requirements:

The National Fire Protection Association (NFPA) has
established guidelines for use in the United States for
passing chimney connectors through combustible walls.
Many building code inspectors follow these guidelines.

Figure 9 shows one NFPA-approved method. All com­bustible material in the wall is cut away to provide 12”
(305 mm) clearance to the connector. Brick and mortar
are used to enclose the clearance area.

Alternate methods approved by the NFPA:

• Using a section of double-wall chimney with a 9”

(229 mm) clearance to combustibles. (Fig. 10)

• Placing a chimney connector pipe inside a steel

double-wall ventilated thimble, which is then sepa­rated from combustibles by 6” (152 mm) of fiberglass
insulating material. (Fig. 11)

• Placing a chimney connector pipe inside a section of

9” (229 mm) diameter, solid-insulated, factory-built
chimney, with two inches of air space between the
chimney section and combustibles. (Fig. 12)

Canadian Requirements:

In Canada, the Canadian Standards Association has
established specific guidelines regarding wall pass­though design. Figure 13 shows one approved method
in which all combustible material in the wall is cut away
to provide the required 18” (457 mm) clearance around
the connector. The resulting space must remain empty.
A flush-mounted sheet metal cover may be used on one
side only. If covers must be used on both sides, each
cover must be mounted on noncombustible spacers at
least 1” (25 mm) clear of the wall. Your local dealer or
your local building inspector can provide details of other
approved methods of passing a chimney connector
through a combustible wall.

In Canada, this type of installation must conform to
CAN/CSA-B365, Installation Code for Solid Fuel Burn­ing Appliances and Equipment.

Fire clay liner

A

A

Fig. 9 Masonry Wall Pass-through with single wall

chimney connector.

Min. 2” (51mm) Chimney clear­ance to brick and combustibles

Masonry
Chimney
constructed
to NFPA 211

Chimney Flue

A = Minimum 12” (305 mm) brick con­struction between liner and combustible
framing materials

Min. 12”

(305 mm)

Chimney
connector

Fire clay
liner

ST272

ST273

Min. 9”
230mm

Sheet Steel
Supports

Solid insulated,
listed factory­built chimney
length set flush
with flue

Masonry
Chimney
constructed to
NFPA 211

Non-soluble re­fractory cement

Min. 2”

(51mm)

Chimney Flue

Min. 9”

(230mm)

Air Space

Chimney
Connector

24 ga.Sheet
Steel Sup­ports

Fig. 10 Wall Pass-through using factory-built insulated
chimney section.

Chimney clearance to sheet steel

Steel Thimble
with two 1”
(25mm) Ventilated
Channels

Masonry Chimney construct
ed to NFPA 211

ST274

supports and combustibles

-

Chimney Connector

Chimney Flue

2” (51mm) Min.

Min. 6”
(152mm)

Glass Fiber
Insulation

24 ga.Sheet
Steel Supports

Fig. 11 Wall Pass-through using single wall chimney
connector with a ventilated steel thimble.

ST275

Chimney clearance to sheet steel
supports and combustibles

2” (51mm) Min.
air space

Prefab Chim­ney
Section

24 ga. Sheet
Steel Supports

Chimney Flue

2” (51mm)
Min.

2” (51mm) Min.

Chimney Con­nector

Prefab
Chimney
Section

24 ga. Sheet

Masonry Chimney construct­ed to NFPA 211

Steel Supports

Fig. 12 Wall Pass-through with ventilated steel thimble.

Min. 18”

(460mm)

ST276

Chimney clearance to sheet steel
supports and combustibles

Chimney Flue

24 ga. Sheet
Steel Support
(one side only)

2” (51mm)

Min.

Min. 18”
(460mm)

24 ga.Sheet
Steel Support

Masonry Chimney constructed
to CAN/CSA-B365

Fig. 13 CSA approved Wall Pass-through.

Chimney
Connector

8

30000369

Aspen Woodburning Stove

C

A

B

A

A

A

A

B

A

E

E

D

Floor Protection

A tremendous amount of heat radiates from the bottom
plate of your Aspen. The floor area directly under and
around the stove will require protection from radiant
heat as well as from stray sparks or embers that may
escape the firebox.

Heat protection is provided through the use of a Bot­tom Heat Shield #1895. Spark and ember protection
must be provided by a floor protector constructed with
noncombustible material as specified.

Most installations will require that the bottom heat
shield be attached. Only when the stove is placed on a
completely noncombustible surface such as unpainted
concrete over earth may it be used without the heat
shield.

Even when the bottom heat shield is installed, you must
provide special protection to the floor beneath. For
installations with the heat shield attached, use a non­combustible floor protector such as 1/4” nonasbestos
mineral board or equivalent, or 24 gauge sheet metal.
The floor protector may be covered with a noncombus­tible decorative material if desired. Do not obstruct the
space under the heater.

Protection requirements vary somewhat between the
United States and Canada as follows:

U.S. Installations: The floor protector is required under
the stove and must extend at least 16” from the front of
the stove (B, Fig. 14), and at least 6” from the sides and
rear (A, Fig. 14). It must also extend under the chimney
connector and 2” to either side. (C, Fig. 14)

In Canada: A noncombustible floor protector is required
under the heater. The floor protector must extend 18”
(457 mm) to the front (B, Fig. 14) and 8” (203 mm) from
the sides and rear. (A, Fig. 14)

Fireplace Hearth Protection

Floor Protection Requirements

U. S. Canada

A: 6” 8“ (203 mm)
B: 16” 18” (457 mm)
C: 10” 10” (254 mm)
D: 44” 48” (1219 mm)
E: 27” 31” (787 mm)

Fig. 14 These dimensions are minimum requirements only.
Use greater dimensions whenever possible.

Wood framing
requires protection
from radiant heat

ST246

ST247

Do not assume that your fireplace hearth is completely
noncombustible. Many fireplace hearths do not satisfy
the “completely noncombustible” requirement because
the brick or concrete in front of the fireplace opening
is supported by heavy wood framing. Because heat
is readily conducted by brick or concrete, it can easily
pass through to the wood. As a result, such fireplace
hearths can be a fire hazard and are considered a com­bustible floor.

For all fireplace installations, follow the floor protection
guidelines described above.

Keep in mind that many raised hearths will extend
less than the required clearance from the front of the
heater when it is installed. In such cases, sufficient
floor protection as described above must be added in
front of the hearth to satisfy the minimum floor protector

30000369

Fig. 15 Supporting timbers under fireplace hearths are
considered to be combustible.

requirement from the front of the stove: 16” (406 mm)
from the front in the United States and 18” (457 mm)
from the front in Canada.

Hearth rugs do not satisfy the requirements for floor
protection as they are only fire-retardant, not fire proof.

Fireplace installations also have special clearance
requirements to the side walls, side decorative trim and
fireplace mantel. Refer to the information on fireplace
and mantel trim shields in this section.

9

Aspen Woodburning Stove

Mobile Home Installation

The Aspen is approved for use in manufactured (mo­bile) homes when installed with the optional Mobile
Home Kit #1898 in accordance with the instructions
provided with that kit and any local codes. This approv­al applies only in the United States.

In addition to the standard installation requirements
described in this manual, the following guidelines apply
to mobile home installations:

1. The stove must be permanently secured to the floor
using the leg clamps and fasteners provided in the
kit.

2. The stove must have a permanent connection to the
outside to supply combustion air.

3. The stove must be grounded to the steel chassis of
the mobile home.

4. A listed chimney system, including roof thimble,
spark arrestor, chimney supports, roof flashing and
any other components suitable for use in mobile
homes must be used. The chimney system must
comply with the standard for Chimneys Factory-Built
Residential Type and Building Heating Appliances
UL 103.

5. The chimney must be attached directly to the stove
and must extend at least 3’ (914mm( above the part
of the roof through which it passes. The top of the
chimney must extend at least 2’ (610 mm) above the
highest point of any part of the mobile home struc­ture within 10’ (3 m) of the chimney.

6.

If the chimney exits the mobile home through a wall at
a point 7 feet or less above the ground level on which
the mobile home is located, a guard or other noncom­bustible enclosure must be fitted at the point of exit
and extend up to a height of 7’ (2.1 m). Any openings
in this guard must be smaller than 3/4” (19 mm).

7. Check all local building codes, specifically those
related to mobile homes. Other requirements may
be applicable to chimney system removal for trans­portation of the mobile home.

WARNING: Do not install the Aspen in a sleeping
room or hallway.

CAUTION: The structural integrity of the mobile
home roof, floor, walls and ceiling must be main­tained.

Clearance to Surrounding

Combustible Materials

When the stove is operating, both the stoveplate and
the chimney connector radiate heat in all directions. A
safe installation requires that adequate clearance be
maintained between the stove and nearby combustible
materials to ensure that those materials do not over­heat.

Clearance is the distance between either your stove
or chimney connector, and nearby walls, floors, the
ceiling, and any other fixed combustible surface. Keep

furnishings and other combustible materials away
from the stove as well. In general, a distance of 48”

(1219 mm) must be maintained between the stove and
moveable combustible items such as drying clothes,
furniture, newspapers, firewood, etc. Keep this area
empty of any combustible material.

Safe Ways to Reduce Clearances

The Aspen clearance requirements, listed and
diagramed on pages 10-11, have been established
through testing to UL and ULC standards to meet most
installation configurations. These involve four basic
variables:

• When the stove has no listed heat shield in-

stalled.

• When the stove does have a listed heat shield

mounted on it.

• When the wall has no listed heat shield installed.

• When the wall does have a listed heat shield

mounted on it.

In general, the greatest clearance is required when the
stove will be positioned with no heat shield near a wall
with no heat shield. The least clearance is required
when both the stove and the wall have heat shields.
Reducing a stove clearance may require installation of
a listed heat shield on the chimney connector as well.

Clearances may be reduced only by means approved
by the regulatory authority, or in accordance with the
clearances listed in this manual.

When determining clearance, always measure from
the top plate of the stove, or, from the chimney connec­tor itself, to the adjacent combustible surface. Do not
measure from the heat shields of the stove or connector
to the combustible surface.

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