Lennox T300HT User Manual
EPA CERTIFIED
NONCATALYTIC
FREESTANDING
WOODSTOVE
INSTALLATION AND OPERATION
MANUAL
RETAIN THESE
INSTRUCTIONS
FOR FUTURE
REFERENCE
MODEL T300HT
THIS APPLIANCE MUST BE INSTALLED BY A QUALIFIED TECHNICIAN.
READ MANUAL THOROUGHLY BEFORE INSTALLATION.
P/N 775007M, REV. J, 04/02
IMPORTANT WARNINGS
CAUTION: PLEASE READ THIS ENTIRE MANUAL BEFORE YOU INSTALL AND USE YOUR NEW ROOM
HEATER. FOR YOUR SAFETY, FOLLOW THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS EXACTLY, WITHOUT DEVIATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PROPERTY DAMAGE, BODILY INJURY, OR EVEN DEATH. IF THIS APPLIANCE IS NOT PROPERLY INSTALLED,
A HOUSE FIRE MAY RESULT. CONTACT YOUR LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS
AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA.
1. If utilizing an older chimney, it must be inspected for adequate serviceability. Refer to the
heading Chimney Inspection on page 8 of this
manual.
2. The minimum clearances must be maintained
for all combustible surfaces and materials including; furniture, carpet, drapes, clothing,
wood, papers, etc. Do not store firewood within
this clearance space. Failure to maintain clearances to all combustibles may result in a house
fire.
3. This appliance requires non-combustible floor
protection as outlined in th is manual (see Floor
Protection on page 5 for additional informa tion).
4. Minimum ceiling height must be 7 feet (213 cm)
(measured from base of appliance to ceiling).
5. DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE CONNECTED TO ANOTHER APPLIANCE.
6. Do not connect this appliance to air ducts or
any air distribution system.
7. PREVENT CREOSOTE FIRE: Inspect and clean
chimney frequently. Under certain conditions of
use, creosote buildup may occur rapidly. Inspect chimney connector and chimney twice
monthly and clean if necessary. Using green o r
inadequately seasoned wood can greatly increase creosote buildup. Use dry wood to minimize creosote buildup.
8. USE SOLID WOOD FUEL ONLY: This appliance
is approved for burning dry seasoned natural
wood only. CAUTION: BURN UNTREATED
WOOD ONLY. DO NOT BURN GARBAGE OR
FLAMMABLE FLUIDS SUCH AS GASOLINE,
NAPHTHA OR ENGINE OIL.
9. Never use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter fluid, or similar liquids to start or "freshen up" a fire in t his heater.
Keep all such liquids well aw ay from the heater
while it is in use.
10. DO NOT OVERFIRE: If heater or chimney connector glows, you are overfiring. Overfiring this
appliance could cause a house fire. O v erfirin g is
a condition where the appliance is operated at
temperatures above its design capabilities.
Overfiring can be caused by improper installation, improper operation, lack of main tenance or
improper fuel usage. Damage caused from overfiring is NOT covered under the manufacturers
limited warranty.
11. NEVER LEAVE AN UNATTENDED STOVE
BURNING ON HIGH. Operation of the stove with
the primary air control at its highest burn rate
setting for extended periods can cause dangerous overfiring conditions. The primary air control should only be positioned at the highest
setting during start-up procedures and for short
durations. When leaving the stove unattended
ensure that the primary air control is set to the
low or medium low range.
12. Use a metal container with a tight fitting lid to
dispose of ashes.
13. IN THE EVENT OF A COMPONENT FAILURE,
USE ONLY COMPONENTS PROVIDED BY THE
MANUFACTURER AS REPLACEMENT PARTS.
14. Burning any kind of fuel uses o xygen from the
dwelling. Be sure that you allow an adequate
source of fresh air into the room where the
stove is operating (see Ventilation on page 6).
15. CAUTION: HOT WHILE IN OPERATION. An appliance hot enough to warm your home can severely burn anyone touching it. Keep children,
clothing and furniture aw ay. Contact may cause
skin burns. Do not let children touch the appliance. Train them to stay a safe distance from
the unit.
16. Do not operate this appliance without the firebox baffle bricks properly installed.
17. Build fires directly upon the brick hearth inside
the stove. Do not use grates, irons or any other
method to elevate the fire.
18. SAVE THESE INSTRUCTIONS.
See the listing label located on the back o f stov e (or
see Safety/Listing Label on page 23).
PAGE 2
TABLE OF CONTENTS
Important Warnings ................................................ 2
Testing/Listing, EPA, Using this Manual .................. 3
Planning Your Installation ..................................... 4-6
Installation .......................................................... 7-10
Product Features and Controls ..............................11
Care and Operation........................................... 11-14
Recommended Fuel................................................14
Maintenance...................................................... 15-16
CONGRATULATIONS ON THE PURCHASE OF YOUR
NEW WOODSTOVE MANUFACTURED BY LENNOX
HEARTH PRODUCTS.
When you purchased your new woodstove, you
joined the ranks of thousands of concerned individuals whose answ er to their home heating needs
reflects their concern for aesthetics, efficien cy and
our environment. We extend our continued support
to help you achieve the maximum benefit and enjoyment available from your new wood stove.
It is our goal at Lennox Hearth Products to provide
you, our valued customer, with an appliance that
will ensure you years of trouble free warmth and
pleasure.
Troubleshooting ......................................................17
Specifications..........................................................18
Replacement Parts List..................................... 19-20
Optional Accessories ..............................................21
Safety/Listing Label.................................................22
EPA Label...............................................................23
Ownership Records ................................................24
TESTING/LISTING
Model T300HT has been Safety tested to U. L. Standard
#1482 and ULC-S627 by OMNI Environmental Services,
Inc.; Beaverton, OR; Report number #094-S-10-1.
EPA CERTIFICATION
This heater meets EPA par ticulate matter (smok e) control requirements fo r noncatalytic wood heaters built on
or after July 1, 1990.
PACKAGING LIST
This appliance is packaged with an accessory package,
which contains the following:
One - Installation and operation instructions manual
One - Warranty
One - Trivet, black cast (fits in recess on stove top)
Four - Leg levelers
Thank you for selecting a Lennox Hearth Products
stove as the answer to your home heating needs.
Sincerely,
All of us at Lennox Hearth Products
USING THIS MANUAL
Please read and carefully follow all of the instructions
found in this manual. Please pay special attention to the
safety instructions provided in this manual. The Hom eowner’s Care and Operation Instructions inc luded here
will assure you have many years of dependable and
enjoyable service from your appliance.
PAGE 3
PLANNING YOUR INSTALLATION
QUESTIONS TO ASK LOCAL BUILDING OFFICIAL
A correct installation is c ritical and im perative f or reducing fire hazards and perilous conditions that can arise
when wood burning appliances are improperly installed.
The installer must follow all of the manufacturers’ instructions.
The installation of a wood burning appliance m ust conform to local codes and applicable state and federal requirements. Familiarity with these requirements before
installation is essential. Impor tant considerations to discuss with local building officials include:
1. Applicable codes (i.e. Uniform Mechanical Code,
State or Regional Codes)
Electrical codes: Optional Blower Assem blies have
a flexible electrical cord that must be electrically
grounded per local codes or per electrical codes:
In USA, NEC, ANSI/NFPA 70-1987
In Canada, CSA C22.1
WARNING: ELECTRICAL GROUNDING INSTRUCTIONS: THIS APPLIANCE IS EQUIPPED
WITH A THREE-PRONG (GROUNDING) PLUG
FOR YOUR PROTECTION AGAINST SHOCK
HAZARD AND SHOULD BE PLUGGED DIRECTLY
INTO A PROPERLY GROUNDED THREE-PRONG
RECEPTACLE. DO NOT CUT OR REMOVE THE
GROUNDING PRONG FROM THIS PLUG.
2. Local amendments?
3. Is a permit required – cost? (You m ay wish to contact your insurance company to ask if they require
this).
4. Rooms where the installation is not allowed?
SMOKE DETECTORS
Since there are always several potential sources of fire
in any home, we recommend installing smoke detectors.
If possible, install the sm oke detector in a hallway adjacent to the room (to reduce the pos sibility of occasional
false activation from the heat produced by the stove). If
your local code requires a smok e detector be installed
within the same room, you must f ollow the requirem ents
of your local code. Check with your local building department for requirements in your area.
NOTE – This appliance is NOT approved for installation into a Manufactured (Mobile) Home in Canada
or the US.
PAGE 4
PLANNING YOUR INSTALLATION
(
(
FLOOR PROTECTION
This appliance requires a non-combustible floor protection for
ember protection. If the f loor protection is to be stone, tile,
brick, etc., it must be mor tared or grouted to f orm a continuous non-combustible surface. If a chimney connector extends
horizontally over the floor, protection must cover the floor under
the connector and at least 2" (51 mm) to either side.
The floor protection must extend completely beneath the
stove and to the front, sides, and rear as indicated:
USA REQUIREMENTS
16” min. to the front of the fuel door glass
4-1/2" beyond the sides of the stove body (measured to side
of stove below the projection of outer top)
0” min. to the back of the stove body
CANA DA REQUIREMENTS
18” (457 mm) min. to the front of the fuel door glass
8” (203 mm) min. beyond the sides of the stove body
8” (203 mm) min. to the back of the stove body
STANDARD P A RA LLEL HEA RTH PA D SHOWN
0" USA
8"
203 mm) Can.
4½" USA
8" (203 mm) Canada
16" USA
18"
457 mm) Canada
4½" US A
8" (203 mm) Canada
SELECTING A LOCATION
The design of your home and where you place your
stove will determine its value as a source of heat. A
wood stove depends primarily on air circulation (convection) to disperse its heat, and therefore, a central
location is often best. There ar e other practical considerations, which must be considered before a f inal selection of locations is made.
♦ Existing Chimneys
♦ Wood Storage
♦ Aesthetic Considerations
♦ Roof Design (Rafter Locations & Roof Pitch)
♦ Room Traffic
♦ Proximity to Combustibles
♦ Electrical Wiring
The installation of this stove will requir e some r esearch.
Once your options are determined, consult with your
local building department who will be able to give you
the necessary installation requirements for your area (Is
a building permit required, room s where installation m ay
not be allowed, etc.).
WARNING: CHECK ALL LOCAL BUILDING AND
SAFETY CODES BEFORE INSTALLATION. THE INSTALLATION INSTRUCTIONS AND APPROPRIATE
CODE REQUIREMENTS MUST BE FOLLOWED EXACTLY AND WITHOUT COMPROMISE. ALTERATIONS TO THE STOVE ARE NOT ALLOWED. DO
NOT CONNECT THE STOVE TO A CHIMNEY SYSTEM SERVING ANOTHER STOVE, APPLIANCE, OR
ANY AIR DISTRIBUTION DUCT. FAILURE TO FOLLOW THESE INSTRUCTIONS WILL VOID THE
MANUFACTURERS WARRANTY.
If you plan to vent your stove into an existing masonry
chimney, have it inspected by a local fire marshal or
qualified installer. Remember that a stove's performance is heavily influenced by the chimney and its location on the roof. An oversized flue m ay not provide ef fective draw, and a flue liner may be required (see Draft
Requirements on page 8). Consult your dealer or quali-
fied installer before final selection is made.
This stove requires pre-installation work to be completed before installation can take place. This may include modification for flue and chimney.
PAGE 5
PLANNING YOUR INSTALLATION
COMBUSTIBLE WALL CLEARANCE
WARNING: IT IS VERY IMPORTANT THAT YOU
OBSERVE THE MINIMUM CLEARANCES.
There are listed clearances for your stove which were
determined in a Laboratory test using various "classes"
of stove pipe or chimney. Minimums are first established
for the stove itself and increased based on how much
heat is transferred by each class of pipe.
Do not install the T300HT in an alcove or a conf ined
space, which would be a room or space with under
a 7' (foot) ceiling, and less than 77" (inches) wide.
UNITED STATES REQUIREMENTS
Residential Reduced Clearance
Use listed double wall chimney connector or Type L vent
pipe to the top of the stove.
CLEARANCES (inches)
A. 10" D. 6"
B. 24 1/4" * E. 15"
C. 16" F.6 1/2"
RESIDENTIAL STANDARD
Using single wall connector pipe from the stove top up
to the chimney support box.
CLEARANCES (inches)
A. 18” D. 13 3/4"
B. 24 1/2” * E. 15"
C. 19” F. 9 1/4"
CANADA REQUIREMENTS
Residential Reduced Clearance
Use listed double wall chimney connector or Type L vent
pipe to the top of the stove.
CLEARANCES (centimeters)
A. 35.5 D. 25.5
B. 73.0 *E. 51.0
C. 43.0 *F. 18.5
Residential Standard
Using single wall connector pipe from the stove top up
to the chimney support box.
CLEARANCES (centimeters)
A. 53.5 D. 42.5
B. 73.5 *E. 51.0
C. 55.0 *F. 31.5
Corner Installation
PROTECTED WALL CLEA RA NCE
Some local codes will allow reduced clearances when the
stove is installed adjacent to a protected wall system. The
variance must be approved by your local building official.
Normally, the protected wall system is defined as a noncombustible m aterial with a m inimum of 1" air s pace behind.
Check your local building codes or with a qualified installer
(Ref. NFPA 211).
VENTILATION REQUIREMENTS
THE FRESH AIR REQUIREMENTS OF THIS APPLI-
ANCE MUST BE MET WITHIN THE SPACE WHERE
IT WILL BE INSTALLED.
Ventilation is essential when using a solid fuel burning
heater. The combustion process of this heater uses
oxygen from inside the dwelling and it may be necessary to open a window or install a vent to provide mak eup air into a dwelling that is well insulated (modern construction standards have resulted in homes that are
highly energy-efficient and that allow little heat loss and
air transfer). Other appliances in the dwelling also contribute to removing air from the dwelling (i.e. clothes
dryers, exhaust fans, fireplaces, and other f uel burning
appliances). If the available fresh air delivery in the
dwelling is insufficient to support the dem ands of these
appliances, problems can r esult (i.e. exces sive negative
pressure can develop in the dwelling which will affect
the rate at which this appliance can draft [See Draft Re-
quirements, page 8], and icing can develop in some environments).
Parallel Installation
* Note: E and F dimensions are measured to side of
stove below the projection of outer top.
PAGE 6
INSTALLATION
BAFFLE PLATES
This appliance has two heavy steel baffle plates that ar e
installed in the upper firebox (over the steel secondary
air supply tubes). During shipment and installation, the
baffle plates might slide around, and may need to be
repositioned (lined up to each other) and pus hed to the
back wall in order for the stove to operate properly.
When in the proper pos ition, the rear edges of the baff le
plates should be flush to the back wall of the firebox.
See Removing Baffle Plates for Cleaning on page 17 for
additional information on installing baffle plates.
INSTALLING LEG LEVELERS
The four leg levelers (included in accessory package),
screw into the tapped (threaded) holes on the bottom of
the four legs. Level the stove by adjusting the screws in
or out.
TYPES OF CHIMNEYS
The chimney is a vital part of your stove installation. A
properly built masonry chimney or a properly installed
factory built chimney will assure a consistent draf t under
a variety of weather conditions (a smoking stove is usually caused by a chimney problem). The stove flue size
is 6 inches diameter, which is approxim ately 28 square
inches minimum . The maxim um flue size should be no
more than (3)-three times the cross sectional area of
the size of the stove flue collar. In this case, that would
be no larger than a 10-inch diameter stack , or approximately 85 square inches maximum.
All chimneys must be installed as specified by local
building codes and according to the chim ney manufacturer instructions (in the case of a fac tory built chimney).
See the chimney manufacturer instructions for exact
specifications. Fact ory built chimneys must com ply with
UL 103HT or ULC S629.
ACCEPTABLE CONNECTOR PIPE FOR INSTALLATIONS
For Standard Residential Clearances: Six (6) inch
minimum, single wall, 25 gage minimum thickness,
stove pipe is acceptable. Three ( 3) pre- drilled holes are
provided in the flue collar for fas tening the pipe s ecurely
to the stove. Use sheet metal screws to do this. Additional sections of single wall pipe should be fastened
together with at least three (3) sheet metal screws each
section. When connecting to the factory built ceiling
support package, use the manufacturer's transition
piece, usually called a dripless connector, to join single
wall pipe to their factory built chimney section.
Minimum Flue Size: The required minimu m diameter
and area required for the flue size is (respectively) 6
inches / 152 mm diameter, which is approximately 28
square inches / 711 square mm. The maximum flue size
should be no more than (3) three times the cross sectional area of the size of the 6 inches / 152 mm diameter
flue collar. In this case, that would be no larger than a
10 inch (254 mm) diameter (area = approx. 85 sq.
inches [216 sq. cm]).
Connection To A Factory Built Chimney: This spac e
heater is to be connected to a factory-built chimney
conforming to CAN / ULC – S629, Standard for 650°C
Factory-Built Chimneys.
For Reduced Residential Clearances: Type L and
listed double wall connector pipe is acceptable. Install
any factory built brand of pipe according to the manufacturer's instructions.
Vapor Barrier At Chimney Penetration
Install all venting components per the Vent Manuf acturers installation instructions. Ensure that there is an effective vapor barrier at the location where the chimney
penetrates to the exterior of the str ucture. This can be
accomplished by applying a non-hardening waterproof
sealant to the following components:
• Around the chimney at the point where the storm
collar will meet the chimney just above the Flashing.
• Along the vertical seam of the c himney pipe, where
it is exposed to the weather.
• On each nail head on the flashing.
• Around the chimney at the point where the storm
collar will meet the chimney just above the flashing.
PAGE 7
Notes:
• On a flat or tarred and gr aveled roofs, nail and seal
the flat roof flashing to the roof on all sides with
roofing compound.
• Do not put screws through the flashing into the
chimney pipe.
INSTALLATION
CHIMNEY INSPECTION
Existing chimneys must be inspected before installing
your stove. Consult your local building department for
chimney code requirements. A m asonry chimney must
have a code approved liner. This liner must not have
broken or missing pieces. Some non-code masonry
chimneys may be brought up to code by being relined.
(Consult your dealer or qualified chimney sweep). Factory built chimneys should also be inspected, first for
creosote deposits (which should be removed), and then
for integrity of the stainless steel liner. Look f or obvious
bulges in the lining, which may indicate the need to replace that section (use a bright flashlight). Also, inspec t
the attic to see that the chimney has proper clearance to
combustible framing members. For interior masonry
chimneys and most f actory built chimneys, this must be
a (2) two-inch air space clearance, which m ust not be
filled with insulation or any other material. An exterior
masonry chimney must have a (1) one-inch air space
clearance.
CHIMNEY HEIGHT REQUIREMENTS
The chimney must extend 3 f eet above the level of roof
penetration and a minimum of 2 feet higher than any
roof surface within 10 feet (see below). Check with your
local building officials for any additional requirements f or
your area.
Due to prevailing winds, local terrain, adjacent tall trees,
a hill, or ravine near the home, or adjacent structures,
additional chimney height or a special chim ney cap may
be required to ensure optimum performance.
DRAFT REQUIREMENTS
The appliance is merely one component of a larger
system. The other equally important component is the
venting system. This is neces sary for achieving the required flow of combustion air to the f ire c hamber and for
safely removing unwanted combustion byproducts from
the appliance. If the venting system's design does not
promote these ends, the system m ay not function properly. Poorly functioning venting systems may create
performance problems as well as be a safety hazard
(i.e. an oversized chimney may result in less than optimum performance. Installations into a large, masonry
chimney may require a liner to improve perform ance) . A
draft test should read greater than .04' W.C. (inches
water column) and less than .08" W.C.
American National Standards Institute ANSI/NFPA 21192, draft 1-7: A chimney or vent shall be so designed
and constructed to develop a flow sufficient to completely remove all flue and vent gases to the outside
atmosphere. The venting system shall satisfy the draft
requirements of the connected appliance in accordance
with the manufacturer instructions.
Top of the flue must be 3’ (915
Requires a
listed termination cap
Top of the flue must be
2’ (610 mm) higher than
any part of roof within
10’ (305 cm) horizontal
mm) higher than highest point
of roof penetration
These rules are minimums. In some
instances, chimney height may need to
be increased to achieve sufficient draft.
To achieve a stable draft, the total flue height requir ed
(from the appliance to termination) is 12 to 15 feet
minimum.
PAGE 8
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