These appliances must be properly installed and operated in order to
prevent the possibility of a house fire. Please read this entire owner's
manual before installing and using your pellet stove. Failure to follow
these instructions could result in property damage, bodily injury or even
death. Contact your local building or fire officials to obtain a permit and
information on any installation requirements and inspection requirements in your area.
P/N 775097M, Rev. E, 12/03
IMPORTANT WARNINGS
CAUTION:
eration and maintenance instructions exactly without deviation. Failure to follow these instructions may result
in a possible fire hazard and will void the warranty. If this appliance is not properly installed, a house fire may
result. Contact local building or fire officials about requirements and installation inspection in your area.
1. DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE CONNECTED TO ANOTHER APPLIANCE.
2. Do not connect this appliance to air ducts or any air
distribution system.
3. Do not install a flue damper in the exhaust venting
system of this appliance.
4. Do not use class B venting intended for gas appliances as a chimney or connector pipe on a pellet
fired appliance.
5. 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.
6. INSTALLATION DISCLAIMER - This stoves exhaust
system works with negative combustion chamber
pressure and a slightly positive chimney pressure.
Therefore, it is imperative that the exhaust system
be gas tight and installed correctly. Since Lennox
Hearth Products has no control over the installation of your stove, Lennox Hearth Products grants
no warranty, implied or stated for the installation or
maintenance of your stove, and assumes no responsibility for any consequential damage(s).
7. Burning any kind of fuel consumes oxygen. If outside air is not ducted to the appliance, ensure that
there is an adequate source of fresh air available to
the room where the appliance is installed.
8. The stove will not operate using natural draft, nor
without a power source for the blower and fuel
feeding systems.
9. Never use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter fluid, or similar liquids to
start or "freshen up" a fire in this heater. Keep all
such liquids well away from the heater while it is in
use.
10. CONTINUOUS OPERATION: When operated correctly, this appliance cannot be overfired. Continuous operation at a maximum burn can, however,
shorten the life of the electrical components (blowers, motors, and electronic controls), and is not
recommended. Typical approved operation would
include running at the low to mid range setting with
occasional running on the maximum setting during
the coldest periods of the winter. The blower speed
control should be turned to high when operating
the stove on the high heat setting.
11. CAUTION: NEVER PUT FINGERS NEAR AUGER.
Pellet fuel is fed to the UltraGrate by a screw auger.
This auger is driven by a high torque motor. The
auger is capable of doing serious harm to fingers.
Keep pellets in the hopper at all times and keep fingers away from auger. The auger can start and
stop automatically at any time while the stove is
running.
Read this manual thoroughly before starting installation. For your safety, follow the installation, op-
12. CAUTION: HOT WHILE IN OPERATION. An appliance hot enough to warm your home can severely
burn anyone touching it. Keep children, clothing
and furniture away. Contact may cause skin burns.
Do not let children touch the appliance. Train them
to stay a safe distance from the unit.
13. APPROVED FUEL: This appliance is designed
specifically for use only with pelletized wood fuels only. With its advanced UltraGrate technology, this appliance is designed and approved for
the burning of wood residue pellets with up to 3%
ash content. This appliance is NOT approved to
burn cardboard, nut hulls, cherry pits, corn, etc.
regardless if it is in pellet form. Failure to comply
with this restriction will void all warranties and
the safety listing of the stove. Consult with your
authorized Lennox Hearth Products dealer for
more information on approved pellet fuels.
14. FLYASH BUILD-UP: For all wood pellet fuelburning heaters, the combustion gases will contain small particles of fly ash. This will vary due to
the ash content of the fuel being burned. Over
time, the fly ash will collect in the exhaust venting
system and restrict the flow of the flue gases.
The exhaust venting system should be inspected
regularly and cleaned as necessary.
15. SOOT FORMATION: Incomplete combustion can
occur during startup, shutdown, or incorrect operation of the room heater. This can lead to some
soot collecting in the exhaust venting system. A
precautionary inspection on a regular basis is
advisable to determine the necessity of cleaning.
The exhaust venting system should be inspected
regularly and cleaned as necessary.
16. DISPOSING OF ASHES: Any ashes removed
from the pellet stove must be deposited in a
metal container with a tight-fitting lid. The
closed container of ashes should be placed on
a noncombustible floor or on the ground, well
away from all combustible materials, outside of
the dwelling pending final disposal. If the
ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in the closed container until all cinders
have been thoroughly cooled.
17. SAVE THESE INSTRUCTIONS.
18. See the listing label on the appliance (or see
Safety / Listing Labels on pages 51 and 52).
PAGE 2
TABLE OF CONTENTS
Important Warnings ................................................ 2
Testing / Listing, EPA, Using this Manual................ 3
Planning Your Installation ..................................... 4-9
Manufactured (Mobile) Home Installation ................9
Safety / Listing Label and EPA Label ............... 51-52
Ownership Records ................................................53
LISTING / TESTING
Listing: The listing laboratory is ITS (Intertek Testing Services) and the listing mark is Warnock Hersey.
Testing: In accordance with the specifications and procedures listed in UL 1482 & ASTM E1509 for solid fuel room
heater, this appliance has been independently tested to UL,
ULC and CSA standards, report # 6658 for Advantage
Optima 2 and report #476-1244 for Advantage
Optima 3.
UL 1482 states requirements for installations as a freestanding room heater, or hearth insert for masonry or listed
factory built (zero clearance) fireplaces. The safety-listing
label is located on an inside hopper surface of the pellet
stove. Please read this safety label carefully. It contains
important information about installation and operation of
this appliance. This appliance is tested and listed for residential installation according to current national and local
building codes as:
• A Freestanding Room Heater
• A Manufactured (mobile) Home Heater
EPA (Environmental Protection Agency)
Status: EPA Exempt - Pellet appliances that are designed with the combustion air supply exceeding the 35
to 1 (by weight) ratio are exempt from EPA regulations
and are “non-affected facilities.”
PRODUCT IS SUBJECT TO CHANGE WITHOUT NOTICE.
CONGRATULATIONS ON THE PURCHASE OF YOUR
NEW PELLET STOVE MANUFACTURED BY LENNOX
HEARTH PRODUCTS.
When you purchased your new pellet stove, you
joined the ranks of thousands of concerned individuals whose answer to their home heating needs
reflects their concern for aesthetics, efficiency and
our environment. We extend our continued support
to help you achieve the maximum benefit and enjoyment available from your new pellet 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.
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
PACKAGING LIST
The assembled pellet stove model Optima 2 FS, Optima 3
FS and Optima 3 INS are packaged with an accessory
package, which contains the following:
One - Installation and operation instructions manual.
One - Warranty.
One - Power cord.
One- Control board – Optima 3 INS only.
One - Screw, #8 x ½” tek (for mounting control board)
– Optima 3 INS only.
One - Grate scraper.
One - Video
One - Lower trim
One - Wall thermostat.
One - Roll of thermostat wire.
Two- Leveling bolts, ¼-20 x 3” – Optima
3 INS only.
One - Door Handle (removable)
One - Fireplace Warning Label (see page 8)
Surround Kit (For Optima 3 INS Only)
(Purchased separately, see page 48) kit is packaged with:
One - Top surround panel.
One - Left surround panel.
One - Right surround panel with door.
One - Left side trim.
One - Right side trim.
One - Top trim.
Two - Corner keys (“L” shaped surround trim brackets).
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 homeowner’s Care and Operation Instructions included 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 critical and imperative for reducing fire hazards and perilous conditions that can arise
when wood pellet burning appliances are improperly
installed. The installer must follow all of the manufacturers’ instructions.
The installation of this appliance must conform to local
codes and applicable state and federal requirements.
Familiarity with these requirements before installation is
essential. Important considerations to discuss with local
building officials include:
1. Applicable codes (i.e. Uniform Mechanical Code,
State or Regional Codes)?
Electrical codes:
In USA, NEC, ANSI / NFPA 70-2002.
In Canada, CSA C22.1
Power Supply Requirements
must be plugged into a standard, 115 volt, 60 Hz
grounded electrical outlet. The approximate
power requirement is 362 Watts, and will peak up
to 736 Watts for approximately 6 minutes when
the self-igniter is operating (it will turn off 2 minutes after flame detection). The power cord must
be routed to avoid contact with any of the hot or
sharp exterior surface areas of the stove. When
installed into a manufactured (mobile) home, the
appliance must be electrically grounded to the
steel chassis (see page 9, Manufactured [Mobile] Home Requirements). These requirements must
be met unless otherwise specified by state or local authorities.
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. DO NOT ROUTE POWER CORD UNDER OR IN FRONT OF APPLIANCE.
2. Local amendments?
3. Is a permit required - cost?
(you may wish to contact your insurance company to ask if they require this).
4. Is outside combustion air required?
5. Rooms where the installation is not allowed?
– The power cord
INSTALLATION / MAINTENANCE STANDARDS
National Fire Protection Association – The primary
NFPA standard that refers to installation and maintenance of pellet appliances and venting is NFPA 211:
Chimneys, Fireplaces, Vents, and Solid Fuel appliances, Jan. 2000.
SELECTING A LOCATION
The design of your home and where you place your
stove will determine its value as a source of heat. This
type of appliance depends primarily on air circulation
(convection) to disperse its heat, and therefore, a central location is often best. There are other practical considerations, which must be considered before a final
selection of locations is made.
The installation of this stove will require some research.
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? Rooms where installation
may 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.
SMOKE DETECTORS
Since there are always several potential sources of fire
in any home, we recommend installing smoke detectors. If possible, install the smoke detector in a hallway
adjacent to the room (to reduce the possibility of occasional false activation from the heat produced by the
stove). If your local code requires a smoke detector be
installed within the same room, you must follow the requirements of your local code. Check with your local
building department for requirements in your area.
PAGE 4
PLANNING YOUR INSTALLATION
FLOOR PROTECTION - Optima 2 FS
This appliance requires noncombustible floor protection. If the floor protection is to be stone, tile, brick, etc.,
it must be mortared or grouted to form a continuous
non-combustible surface. If a chimney connector extends horizontally over the floor, the protection must
cover the floor under the connector and at least 2" to
either side.
A noncombustible floor protector must fully cover the
area beneath the appliance and extend 6” to the front,
6” to the sides, and up to 6" from the back as illustrated on this page.
*Note: When installed at clearances less than 6”, floor protection is only required to extend to the wall.
Top View of Model: Optima 2 FS
6"/
153mm
min.
Up to * 6"/153mm
minimum
Rear
Front
6"/
153mm
min..
6"/
153mm
min.
PAGE 5
PLANNING YOUR INSTALLATION
FLOOR PROTECTION - Optima 3 FS
The floor protector must
meet or exceed the
minimum thermal requirements as defined
on this page (see Floor
Protection/Hearth Extension Using Alternate
Material As Floor Protector). If the floor pro-
tection is to be stone,
tile, brick, etc., it must
be mortared or grouted
6”/
153mm
min.
to form a continuous
noncombustible surface. If a chimney connector extends horizontally over the floor, protection must also cover
the floor under the connector and at least 2" (51 mm) to either
side.
The floor protector must fully cover the area beneath the appliance and extend 6” to the front, 6” to the sides, and 6” from the
back as shown in the illustration to the right (Note: When installed
at clearances less than 6”, the floor protection is only required to
extend to the wall).
FLOOR PROTECTION / HEARTH EXTENSION USING
ALTERNATE MATERIAL AS FLOOR PROTECTOR
see Floor Protection above for freestanding models and
Hearth Requirements, page 8 for the insert model)
The hearth pad or alternate material used as a floor/hearth
protector must be constructed of a durable noncombustible
material having an equal or better thermal conductivity value
(lower k value) of k = .84 BTU / IN FT
resistance that equals or exceeds r = 1.19 HR °F FT
with a minimum thickness of 3/8”. With these values, determine the minimum thickness of the alternate material required
using the formula(s) and the table shown here (see chart Approved Alternate Materials for Floor/Hearth Protection).
Note: Any noncombustible material having a minimum thickness
of 3/8” (10 mm) whose k value is less than .84 or whose r value
is more than 1.19 is acceptable. If the alternate material used has
a higher k value or lower r value will require a greater thickness of
the material used. In some cases, if the k value is less or the r
value higher, a thinner material may be used.
Methods of determining floor protection equivalents:
To determine the thickness required for the alternate material
when either the k value or r value is known, use either the k
formula or r formula:
Example: Durock Cement
tion. How thick must this material be? The following formulas
give the means of determining minimum thickness required.
TM = minimum thickness required for alternate material
kM = k value per inch of alternate material
TL = minimum thickness of listed material
r
= r value per inch of alternate material
M
Using the k formula
Minimum k-value (per Inch) Specified min.
thickness of = of alternate material
alternate k-value (per inch) of listed
material of listed material material
:
is to be used for the floor protec-
Top View
*Up to 6”
1 53 mm minimum
6”/153mm
minimum
2
HR °F or a thermal
x thickness
2
6”/
153mm
min.
(also
IN/BTU
TM (inches) = kM x T
.84
(inches) = 1.92 x .375 (3/8”)
T
M
.84
L
Answer using k: 2.29 x 0.375” = 0.858 = ~7/8”
7/8” thickness (minimum) Durock Cement will be required.
Using the r formula
(inches) = 1.19 x TL
T
M
r
(inches) = 1.19 x 375 (3/8”)
T
M
.52
:
M
Answer using r: 2.29 x 0. 375” = 0.858 = ~7/8”
7/8” thickness (minimum) Durock Cement will be required.
At times it is important to know what combination of materials
are acceptable for use as floor protection. The “R values” are
used to determine acceptable combinations of materials because “R values” are additive where r and k values are not.
“R value” = 1
k
= r x thickness of material used
Example: Given that the required “R value” for a suitable floor
protector used must be equal to or greater than “R” = r x T
1.19 x .375” = .45.
Listed Material
Listed Material →
Thermal Values
k (per inch) r (per inch) T
.84 1.19 3/8” (.375)
Specified
Minimum
Thickness
=
L
L
Approved Alternate Materials for
Floor/Hearth Protection (**)
Alternative
Materials ↓
k (per inch) r (per inch) TM
Kaowool M Board .47 2.13 * 3/8”
Micore 160
Micore 300
Durock Cement
Hardibacker
Hardibacker 500
Cultered Stone
Hearthstone
Wonderboard 3.23 0.31 1 1/2”
Face brick 9.00 0.11 4 1/8”
Common brick 5.00 0.20
Cement mortar 5.00 0.20 2 1/4”
Ceramic tile 12.5 .08
Marble
Note: To convert inches to millimeters divide by .03937.
* After minimum thickness is calculated, the thickness can be
no less than 3/8” (.375” / 10mm).
(**) If the floor protector to be used is a noncombustible material
and is NOT listed on the chart above, the manufacturer of the material must provide either the listed k-value per inch or r-value per
inch and the minimum acceptable thickness will need to be calculated per instructions on this page.
Thermal Values * Minimum
.35 2.86 * 3/8”
.46 2.18 * 3/8”
1.92 .52 7/8”
1.95 .51 7/8”
2.30 .44 1 1/8”
2.82 .35 1 5/8”
~20.0 ~.05
Thickness
2 1/4”
5 5/8”
9”
.
PAGE 6
PLANNING YOUR INSTALLATION
Clearances to combustibles are determined from testing to applicable standards for allowable heat transfer. The clearances allowed as shown here, do not take into account operation or serviceability requirements.
CLEARANCES
Optima
2 FS and Optima 3 FS - Standard residential or
manufactured (mobile) home installation. These appliances require the following minimum clearances to combustibles:
MINIMUM CLEARANCES TO COMBUSTIBLES
Optima 2 FS
Clearance to
Combustibles
A - Sidewall to unit ♦4” / 102 mm ♦4” / 102 mm
B – Backwall to unit *2” / 51 mm 9” / 229 mm
C – Sidewall to unit
Corner
D – Max. Depth of
Alcove
E – Flue to Wall 3” / 77 mm 3” / 77 mm
♦ Measured to fuel hopper lid in alcove.
• Minimum Alcove Measurements - Height 48” / 1220 mm
Width 31” / 788 mm
Manufactured (Mobile) Home
or Residential Installation
Horizontal Flue – Directly Through Wall
inch / millimeterinch / millimeter
*2” / 51 mm *2” / 51 mm
•24” / 610 mm •24” / 610 mm
Optima 3 FS
▪ Clearance to
Combustibles
A - Sidewall to unit ♦6” / 153 mm ♦6” / 153 mm
B – Backwall to unit *2” / 51 mm 9” / 229 mm
C – Sidewall to unit
Corner
D – Max. Depth of
Alcove
E – Flue to Wall 3” / 77 mm 3” / 77 mm
♦ Measured to fuel hopper in alcove.
• Minimum alcove measurements - Height 48” / 1220 mm
Width 38” / 966 mm
Manufactured (Mobile) Home
or Residential Installation
Horizontal Flue – Directly Through Wall
inch / millimeterinch / millimeter
*2” / 51 mm *2” / 51 mm
•16” / 407 mm •16” / 407 mm
Minimum clearances specified may not allow for
ease of operation and maintenance (please take
this in to account when planning the installation).
If installed to the minimum clearances, removal of
the appliance may be necessary for servicing.
Recommended clearance zone from the front of
the appliance to combustibles is 4 feet minimum.
* The certified back wall clearance as shown on the
listing label is 1" (see Safety / Listing Label) but for
proper hopper lid operation in corner and parallel
installations a 2" clearance is required.
Interior Vertical Flue
Interior Vertical Flue
Rear Wall or Alcove – Optima
Corner - Optima 2 FS
*
Corner - Optima 3 FS
*
2 FS and Optima 3 FS
*
*
*
PAGE 7
PLANNING YOUR INSTALLATION
E
MASONRY AND FACTORY BUILT FIREPLACES
The model Optima
fuel burning fireplace, either a masonry fireplace (built to UBC 37
or ULC S628 standards) or an approved factory-built / zero
clearance fireplace (built to UL 127 or ULC S610 standards).
See pages 20 and 21 for additional information on venting.
Minimum Fireplace Firebox Size
Height 20 1/8” / 512 mm
Width @ Front 32” / 814 mm
(extends back 1 ½”)
Width @ back 24 5/8” / 626mm
Depth 17 ¾” / 452 mm
Clean-out
Tee
CAUTION: The fireplace in which the Optima 3 INS is to be
installed must be thoroughly cleaned if it has been used to burn
wood or synthetic logs. Have the chimney and all inside surfaces of the fireplace brushed and vacuumed so that no soot,
embers, or loose combustion deposits can be drawn into the
heat circulation blower and blown into the living area. If any portion of the chimney system shows signs of structural or mechanical weaknesses, such as: cracks, leaky joints, corroded or
warped surfaces, the faulty portion must be repaired or replaced
prior to installing this appliance.
IMPORTANT: When installing the Optima 3 INS into a factory
built fireplace or heatform, the air flow within and around the fireplace shall not be altered by the installation of the insert (i.e. DO
NOT BLOCK louvers or cooling air inlet or outlet ports, circulating
air chambers in a steel fireplace liner or metal heat circulator). The
factory built firebox must accept the insert without modification
other than removing bolted or screwed together pieces such as
smoke shelf / deflectors, ash lips, screen or door tracks and
damper assemblies. Any fireplace component, which is removed,
must be retained so they can be reinstalled to restore the fireplace
to its original operating condition. The removal of any part must
not alter the integrity of the outer shell of the pre-engineered fireplace cabinet in any way. A Warning Label (provided with appliance) must be installed in the fireplace firebox so that it shall be
visible upon removal of the fireplace insert (see Fireplace Warning Label, below). Use RTV high Temperature Silicone as an adhesive to affix the warning label.
THIS FIREPLACE HAS BEEN ALTERED TO ACCOMMO-
DATE A FIREPLACE INSERT AND SHOULD BE INSPECTED BY A QUALIFIED PERSON PRIOR TO REUSE AS A CONVENTIONAL FIREPLACE.
3 INS is approved for installation into a solid
24 5/8"
"
Recommended clearance zone from the
front of the appliance
to combustibles is 4
feet minimum.
32"
Fireplace Warning Label
(provided in accessory package)
HEARTH / FLOOR PROTECTION - Optima 3 INS
The area directly in front of the Optima 3 INS
must be protected by a noncombustible material
or a fireplace hearth or hearth extension as follows:
Combustible flooring must be protected by
non-combustible material in Canada and 10
millimeter (3 / 8 inches) millboard or equivalent
non-combustible in U.S. extending beneath the
heater and to the front as indicated or to the
nearest permitted combustible material. See
page 6 for requirements when using alternate
material as hearth extension.
The protected area must extend 6” to the front of
the face of the Optima 3 INS.
MINIMUM CLEARANCES TO COMBUSTIBLESinches / millimeters
A - Insert to side wall 6” / 153 mm
B - Insert to side trim 1” / 26 mm
C - Hearth extension 6” / 153 mm
D - Insert to mantel 18” / 458 mm
E - Insert to top trim 1” / 26 mm
Top View
Side Wall Trim
Side View
Trim
Mantel
D
PAGE 8
PLANNING YOUR INSTALLATION
MANUFACTURED (MOBILE) HOME INSTALLATION
Freestanding Models – Optima 2 FS and Optima 3 FS
In addition to the standard installation instructions, the
following instructions may be required by local, state or
federal building codes:
• Stove must be permanently bolted to the floor.
• An outside air inlet must be provided for combustion
and be unrestricted while unit is in use. Use a galvanized or stainless steel pipe for the duct (the outside
air inlet on the stove is 2" diameter).
• Stove must be permanently electrically grounded to
the steel chassis of the home. The location selected
for ground attachment to the stove must be dedicated
for this purpose.
• See pages 14 through 19 for additional information on
venting requirements.
• Do not install appliance in a sleeping room.
• The structural integrity of the manufactured home
floor, walls, ceiling and roof must be maintained.
NOTE: The grounding of this product, at installation,
must comply with NFPA-70 standards, CSA C22.1 in
Canada, as well as any local codes.
MANUFACTURED (MOBILE) HOME EXHAUST VENT
PIPE INSTALLATION GUIDELINES
Use only listed type “PL” pellet vent pipe. Pipe should
extend at least 3 feet above the part of the roof through
which it passes. The top of the pipe should be at least 2
feet above the highest required elevation of any part of
the manufactured (mobile) home within 10 feet of the
pipe.
If the exhaust vent exits the manufactured (mobile)
home at a location other than the roof, and exits at a
point 7 feet or less above the ground level on which the
manufactured (mobile) home is positioned. A guard or
method of enclosing the pipe shall be provided at the
point of exit for a height of up to 7 feet. The openings, if
any, in this guard shall not allow a 3/4” rod to pass
through. A 1/2” rod could pass through but should not
be able to touch the pipe when inserted through the
opening a distance of 4 inches.
Models – Optima 2 FS and Optima 3 FS
Bolt
Floor Protector
Ground to Steel Chassis
PAGE 9
INSTALLATION
)
REMOVING APPLIANCE FROM PALLET
1. After removing the packaging from the stove, lift the hop-
per lid, and remove all pre-packaged items that were
shipped in the hopper. Next, open the stove door and
remove all pre-packaged items.
2. Using a socket or open end wrench (7/16" for freestand-
ing units and 3/8" for the insert), remove the pallet bolts
which secure the unit to the pallet (located on each side
of back corners and at the front under ash pan). See following pictures.
Optima 3 INS
Use a 3/8" nut
driver to remove
the bolts on
both brackets
(located on each
side of the insert back
.
Side View of Optima 2 FS & Optima 3 FS
(Removing Back Pallet Bolts)
Remove 1
bolt on each
side of stove
back
Note: The pallet bolt at the front of appliance is located under the ash pan (this will require removing the ash pan. See
Ash Pan on pages 28 and 29 for removal instructions). See
following picture (freestanding unit shown).
Front View - Removing Front Pallet Bolt
Stove or Insert Front
INSTALLATION CHECK LIST
It is strongly recommended that you have an authorized Lennox Hearth Products dealer install your
stove. If you install your stove yourself, you should
review your installation plan with an authorized Lennox Hearth Products dealer.
Check list:
Check off each item as you proceed with the installation process.
Read the ENTIRE stove installation section first
Read the Insert or Freestanding section (which-
ever applies).
Determine the appropriate measurements and
locations for your installation.
Follow the general installation directions under
Stove Installation and the installation section appropriate to your stove.
Be sure to pre-fit all items before you install, fas-
ten, or set up the stove permanently.
Prior to lighting your stove:
Review the Important Warnings section (page 2).
Review Fuel Specifications (page 27).
Review and follow instructions in the Care and
Operation Section (pages 22 to 27).
Plug power cord connector into corresponding
connector on the back of appliance (see illustrations on page 13 showing connector locations).
Note
: Optima 3 INS – Route power cord behind
side surround panel.
After you have begun operation of your stove:
Review the routine cleaning / maintenance informa-
tion.
Enjoy the warmth from your new Lennox Hearth
Products pellet stove!
(Insert Only) It is important to level the appliance. In
some installations such as a recessed firebox floor (if
the existing fireplace floor is lower than the hearth),
install the 2 leveling bolts (1/4-20 x 3” long) into the
threaded holes at the rear base of the Optima 3 INS.
Adjust bolts until appliance is level.
With the ash pan
removed, remove
center bolt.
PAGE 10
INSTALLATION
INSTALLING SURROUND ASSEMBLY - Optima 3 INS
(to be done after venting system is installed)
The surround kit (purchased separately) comes with a
set of metal panels that enclose the fireplace opening
when fitted together. There is also a trim assembly that
frames the surround assembly to give it an attractive finished appearance. Put the surround assembly together
according to the following instructions.
1. Remove panels from package.
2. Open the hopper lid on Optima 3 INS so it is out of
the way for when panels are installed.
3. Install the control board onto the right side panel (with
door) using the TEK screw (#8 x ½”) provided.
4. Position the power cord so that it will be behind either
the right or left side surround panel when they are installed.
5. Install right side surround panel onto right side of the
Optima 3 INS body by sliding the 2 flanges on side of
panel into corresponding slots on the Optima 3 INS.
6. Connect the wiring harness from the Optima 3 INS
into corresponding connector on control board.
Locate damper rod on left side of the Optima 3 INS. Rotate angled arm of rod so it is pointing down. Remove
damper knob and set aside.
7. Install the left-hand panel onto the left side of Optima
3 INS body by sliding the 2 flanges on side of panel
into corresponding slots on the Optima 3 INS.
8. Reach behind left surround panel and rotate damper
arm so that end is inserted into the upper right hand
slot of left surround panel (see illustration on page 12,
Optima 3 INS).
9. Reinstall damper knob by threading it onto end of
damper rod.
10. Set the top surround panel in place over the two side
panels. Position the 2 tabs on bottom of top surround
panel so they slide into corresponding clips on the
Optima 3 INS. Connect the top surround panel to the
side panels by pressing pins from side panels into
corresponding holes on top panel.
11. Remove the surround trim from its packaging. Assemble it together using the corner keys (“L” shaped
brackets) provided. Slide assembled trim over the top
surround panel and slide it down over the side panels.
12. Push the Optima 3 INS back into place so the surround is flush with the face of the hearth.
PAGE 11
INSTALLATION
r
Optima3 INS (Only) – Install damper rod knob as ex-
plained on page 11.
Left
Surround
Panel
For less air, slide
damper knob to the
right (or) for more air,
slide knob to the left.
Damper Adjustment
It is very important to preset your damper prior to burning your pellet stove.
Damper - Air Control Handle – Freestanding Units
Damper is factory set to a gap as
specified below. Follow Dampe
Adjustment Guidelines on page 26.
More Air
Less Air
Damper
Knob
Adjustment Procedure:
The damper knob should be
positioned in the center of the oblong slot for the average installation (see illustration above). If more or less
air is needed, then adjust in ¼" increments until optimum combustion air flow is achieved (see Damper Adjustment Guidelines on page 26).
Damper Locations
See ‘Opening Side Panels’, page 33 for instructions on
opening the side panels for models Optima 2 FS & Optima 3 FS. See ‘Installing Surround Assembly’ for instructions on side surround panel access for model Optima 3 INS.
Optima 2 FS - The damper control handle is located on the
right-hand side panel.
Optima 3 FS - The damper control handle is located on the
left-hand side panel.
Optima 3 INS - The damper control handle is located on the
left surround panel.
1 5/8" – Optima 3 FS
1 1/2" – Optima 2 FS
To adjust, use a
3/32" allen wrench
to loosen set collar.
Adjustment Procedure:
Loosen setscrew on set collar
(see above picture), then adjust in ¼" increments until
optimum combustion air flow is achieved. For less air
push in and for more air pull out. After adjustment, position set collar against side panel and tighten setscrew.
PAGE 12
INSTALLATION
THERMOSTAT INSTALLATION:
NOTE: Always Disconnect Power Before Performing The Thermostat Installation
A 24 volt wall thermostat and 20 feet of 18-gage thermostat wire is included in your stoves accessory package. It is recommended that the thermostat and thermostat wire be installed by an authorized Lennox Hearth Products dealer.
Installation Steps:
1. Unplug stove power cord from the wall outlet.
2. Locate the thermostat terminal block (see illustrations below).
3. Loosen the two terminal screws on the terminal block and remove the jumper.
4. Connect the two wires from your thermostat to the terminals (one per terminal). Ensure that the purple wires from the
harness remain connected to the terminal block and tighten the terminal screws. Make sure the wires are firmly connected to the thermostat.
5. Plug in the stove and you are ready to operate with your thermostat!
IMPORTANT: IF THE WALL THERMOSTAT PROVIDED IS NOT USED, THE JUMPER IS REQUIRED FOR THE
STOVE TO OPERATE.
Terminal Block for Thermostat
Leave Jumper on, If Thermostat Is Not
Used
(on right side of insert when viewed from the front)
.
Model: Optima 3 INS
Th
Remove Jumper if Thermostat Is
Jumper
Model: Optima 3 FS
Terminal Block
for Thermostat
To Be Used
Terminal Block
for Thermostat
Power Cord
Connector
Model: Optima 2 FS
(viewed from stove back)
Terminal Block
for Thermostat
Power Cord
Connector
Power Cord
Connector
PAGE 13
INSTALLTION
VENTING REQUIREMENTS
It is recommended that only an authorized dealer install
your pellet stove. The specified installation requirements
must be followed to ensure conformity with both the
safety listing of the appliance and local building codes. All
clearances, installation instructions and precautions
specified by the vent manufacturer must be followed.
Selecting a Location (Freestanding Models)- Review
the appliance clearance requirements before installing
the venting system (see page 7). Position the appliance
far enough away from walls to allow adequate room for
servicing. Choose the appliance location with the least
amount of interference with the house framing, plumbing,
wiring, etc.
Preferred Vent Configuration – For the best performance, we recommend a vent run design which runs vertically and terminates above the roofline. This design will
allow natural draft to improve the flow of flue gases and
will aid in combustion and stove performance.
Type of Pipe - This stove requires type “PL” (pellet vent
pipe, sometimes referred to as “L-Vent pellet vent”),
which conforms to UL standard 641. Connect the pellet
vent pipe or the “tee” to the flue collar using a minimum of
three screws and seal as specified in “Pipe / Liner Joint
Requirements” on this page. Do not use class B gas chimney or single wall chimney as a substitute.
Size of Pipe -These pellet appliances are approved for
use with the following vent sizes: 3” (75mm) standard, or
4” (100mm). See page 16 for determining correct size
vent to use. Use a 3” (75mm) to 4” (100mm) adapter
(Cat. No. 14M81) or a 3” (75mm) to 4” (100mm) “tee” in
order to run 4” (100mm) pipe.
Offsets - In every installation, a single or double cleanout “tee” is recommended for every ninety-degree offset
(this tee will help collect ash residue and will allow for
routine cleaning without the need to disconnect sections
of pipe).
Note: Offsets and horizontal runs accumulate fly ash and
soot which reduces the exhaust flow and performance of
the stove.
Total Offsets in venting system should not exceed 270°
total in direction change.
Horizontal Runs - The maximum total horizontal run
must not exceed 10 feet (3.1 meters).
Horizontal run of pipe requires 1/4” / 7 mm rise per foot.
Pipe Clearances / Requirements – See pipe manufacturers instructions for installation of venting components
and clearances. Follow pipe manufacturers installation
precautions for passing pipe through a combustible wall
or ceiling (i.e. use an approved thimble).
Notes:
All pellet vent pipe requires 3” (75mm) clearance from
outside of pipe unless otherwise specified by vent manufacturer.
A support bracket should be installed every 4’ (1.2m) of
pellet vent pipe on the exterior wall of the house unless
otherwise specified by vent manufacturer.
Pipe / Liner Joint Requirements - All pipe joints must
be secured with a minimum of 3 screws. ALL horizontal
joints must be sealed gas tight (air tight, sealed connection). Use High Temperature RTV silicone with a rating of
at least 570° F (969° C), or Interam to provide a complete
seal at the flue collar and on all joints.
Connection to Masonry Chimney through a Wall
(Freestanding Models) - Be sure to verify the construc-
tion of a masonry chimney, as it may have combustible
framing.
Approved liner when relining Masonry or Factory
Built Fireplaces is 2100HT (degree F.) liner listed to
UL 1777 or ULC S635.
Connection to an Existing Class A Chimney (Freestanding Models) - A chimney adapter can be used to
make the connection from 3” / 75mm or 4” / 100mm pellet
vent pipe to existing UL chimney system. Verify with the
pipe manufacturer that your pipe brands will interconnect.
Horizontal-Vent Installations - On all horizontal-vent
installations (short, horizontal runs with no vertical pipe);
care should be taken when choosing a location for terminating the vent. It is not recommended to directly vent the
exhaust on the prevailing wind side of the house. It is
recommended that when an appliance is vented directly
through a wall, a minimum of 8’ (2.5m) of vertical pipe
should be installed to create some natural draft. This will
reduce the possibility of smoke or odor entering the
dwelling during appliance shutdown or loss of power.
PAGE 14
INSTALLTION
ON C
GHES
VENT TERMINATION
Do not terminate vent in an enclosed or semi-enclosed
area such as: carports, garage, attic, crawl space, under
a deck, porch, narrow walkway, closely fenced area, or
any location that can build up a concentration of fumes
such as a stairwell, covered breezeway etc.
Vent surfaces can get hot enough to cause burns if
touched. Adults should supervise children when they are
in the area of a hot stove. Non-combustible shielding or
guards may be required.
Termination Cap: The termination of the outside chimney of the pellet stove shall be located in accordance with
the following:
A. Higher than 3’ (.92m) above any forced air inlet (air
conditioner, etc.) located within 10’ (3m).
B. Not less than 4’ (1.2m) below, 4’ (1.2m) horizontally
from or 1’ (3.1m) above any gravity air inlet (door, window, etc.) which flue gases could re-enter the dwelling.
C. Not less than 2’ (.6m) from combustible materials such
as an adjacent buildings, fences, protruding parts of the
structure, roof overhang, plants and shrubs, etc. and
not less than 7’ (2.1m) above grade when located adjacent to the public sidewalks (access). The final termination of the exhaust system must be configured so that
flue gases do not jeopardize the safety of people passing by, overheat combustible portions of nearby structures or enter the dwelling.
D. Not less than 3’ (.92m) below an eave (maximum
overhang of 3’ (.92m) or any construction that projects more than 2” (51mm) from the plane of the wall.
E. The distance from the bottom of termination to grade
is 12” (305mm) minimum. This is conditional upon
plants and nature of grade surface: Be careful to
choose a location for the vent termination, which
does not expose people or shrubs to high heat from
the exhaust gases. The exhaust gases are not hot
enough to ignite grass, plants and shrubs located in
the vicinity of the termination although they should be
a minimum of 3’ (.92m) away. The grade surface under the termination must not be a lawn.
F. Since sparks may escape from the exhaust pipe of
any stove, use caution when positioning the vent
pipe. Refer to pipe manufacturer’s instructions when
installing and terminating the exhaust. The vent pipe
should be horizontal and never run the pipe in a downward direction (recommend a ¼” (7mm) rise
per foot horizontal).
Notes:
• It is not recommended to terminate exhaust vent on the
prevailing wind side of the house.
• It is not recommended using a termination cap with a
screen (fly ash can collect in a screen resulting in
blockage).
Site Built Residential Home
Chimney Height Requirements
The vent termination height required is - USA, 1-foot
minimum; Canada 3-feet minimum above the roof penetration point as illustrated below (Ref. USA - National
Standard, NFPA 211, Clause 7-4.1 and Canada National
Standard CSA B365-01, Clause 5.6). Check with your
local building official for additional requirements for your
area.
TERMINATION
CAP MUST BE
LISTED TO UL
641 AND ULC
S609 *
USA 1 Foot Minimum
TERMINATION HEIGHT IS
MEASURED ABOVE THE
HIGHEST POINT WHERE
IT PASSES THROUGH
THE ROOF SURFACE.
Manufactured (Mobile) Home
Chimney Height Requirements
The chimney must extend 3’ (.92m) above the level of
roof penetration and a minimum of 2’ (.61m) higher than
any roof surface within 10’ (3m) (see below). Check with
your local building officials for additional requirements for
your area.
REQUIRES A LISTED
TERMINATI
AP *
TOP OF FLUE MUST BE 3’ HIGHER THAN
T POINT OF ROOF PENETRATION
HI
TOP OF FLUE MUST BE 2’
HIGHER THAN ANY PART OF
ROOF WITHIN 10’ HORIZONTAL
To pass inspection in nearly any jurisdiction, the chimney
must meet both safety and exhaust flow requirements.
The (3’ by) 2’ by 10’ rule applies to both masonry and
factory built chimneys.
* Ref. NFPA 211 Clause 7 – 4.1.2, Vents installed with a
listed cap shall terminate in accordance with the terms
of the cap’s listings.
PAGE 15
INSTALLATION
r
DETERMINING SIZE OF PIPE TO INSTALL
To determine what diameter pipe to use in an installation (3” or 4”), first find the “equivalent pipe length” using the following guidelines, then plot this figure and the altitude on the chart.
Fill out the installation chart, and calculate your total equivalent pipe length. After you have the total equivalent pipe
length, use the Pipe Selection Chart below to determine if your installation requires 3” or 4” exhaust pipe
NOTE: All equivalent pipe styles shown to the right are
standard for all freestanding models.
90o Elbows /
Tee (A & G)
o
45
Elbows (C)
Horizontal
(B & F)
Vertical
(E)
Total = 20
2 x 5 Ft. (1.5m) 10 (3m)
1 x 3 Ft. (1m) 3 (1m)
3 x 1 Ft. (.3m) 3 (1m)
8 x .5 Ft. (.15m) 4 (1.2m)
PIPE SELECTION CHART
30
4 “ Diameter Only
20
3 or 4”
10
Diamete
0
0 1 2 3 4 5 6 7 8 9 10
Equivalent Pipe Length (Feet)
Altitude x 1000 Feet
PAGE 16
INSTALLATION
INSTALLING YOUR FREESTANDING PELLET STOVE
Standard Horizontal Vent Installation
1. Locate the proper position for the listed type “PL”
wall thimble. Avoid cutting wall studs when installing
your pipe. Use a saber saw or keyhole saw to cut
the proper diameter hole through the wall to accommodate the wall thimble. Use extreme caution to
avoid cutting into power lines within the wall of the
home. The hole size will depend on the brand of
pellet vent that you are using. Install the wall thimble
in the hole.
ALL INTERLOCKING PIPE CONNECTIONS WITHIN THE ROOM MUST BE SEALED WITH High Temperature RTV AND SECURED WITH A MINIMUM
OF 3 FASTENERS PER CONNECTION.
2. Position the stove approximately 12” (.3m) from the
wall on the floor pad. Push listed type “PL” pipe
through wall thimble. Squeeze a bead of high temperature silicone (High Temperature RTV) sealer
around the end of the machined portion of the 3”
(76mm) pipe connector on the back of the stove.
Firmly push on a section of listed type “PL” pipe until
inner pipe liner pushes into the bead of High Temperature RTV sealer.
3. Push the stove (with pipe attached) towards wall.
Pipe will go through the wall thimble. Do not position
the back of the stove closer than 2” (51mm) from the
wall.
NOTE: Greater back clearance will improve the serviceability of the stove.
4. Install listed type “PL” 45 degree elbow with optional
rodent screen or cap (recommended) on outside end
of pipe. The rodent screen should be no less than
1/2” (13 mm) mesh and may clog with soot and ash
if left unattended during the burn season.
NOTE: The end of the exhaust pipe must extend a
minimum of 12” (.3m) from the outside of the building.
5. If the installation includes a source of outside combustion air; cut a separate hole through the wall for
the fresh air tube. Use a galvanized or stainless
steel pipe for the duct. The minimum size for the
duct shall be not less than 50% of the cross sectional flue area. Connect outside air pipe to air inlet
on stove. This tube must be terminated with a 45
degree elbow or hood.
NOTES:
Combustion air may also be drawn from a vented crawl
space under the home.
All joints for connector pipe are required to be fastened
with at least three screws. If vented horizontally, joints
shall be made gas-tight (air tight, sealed connection) in
a manner as specified on this page (see instruction #1).
Install vent at clearances specified by the vent manufacturer.
Exhaust
Port
Gasket
Back of
Stove
Inlet
Air
Port
Quick
Disconnect
Straight PL-Vent
Pipe
Holes Through the Wall for the
Thimble and Fresh Air Pipe
Wall Thimble 45 Degree
Elbow
45 Degree Elbow Joint
for Fresh Air Pipe
PAGE 17
INSTALLATION
Standard Horizontal Installation Configurations
Optima 2 FS
Optima 3 FS
Corner Through the Wall
3” (75 mm) Minimum clearance between wall and pipe.
If you vent to the
furthest wall, the
vent pipe must
maintain a 3” clearance parallel to the
other wall.
Wall
Top View Illustration
Corner Through the Wall
3” (75 mm) Minimum
clearance between
wall and pipe. If you
vent to the furthest
wall, the vent pipe
must maintain a 3”
clearance parallel to
the other wall.
Top View Illustration
Wall
2"
"
Wall
Optima 2 FS and Optima 3 FS
Horizontal Vent Through the Wall
6" / 152 mm
Minimum
2" / 51 mm
Minimum
12" / 305 mm
Minimum From
Outer Wall
Hearth Pad /
Floor Protection
Note: Horizontal run of pipe requires 1/4” (7 mm) rise per foot.
PAGE 18
45 Degree
Elbow
12" / 305 mm From
Ground or Other Surface
INSTALLATION
r
Standard Vertical Installation Configurations
Models: Optima 2 FS and Optima 3 FS
These freestanding models may be connected to an
existing flue or by installing listed type “PL” vent pipe. If
a liner is run all the way to the top of the existing chimney, the existing flue should be sealed with a steel
plate. Start a vertical run with a Tee at the back of the
stove. Other options are illustrated below. Note: See
page 15 for Vent Termination Requirements
Exterior Vertical Vent
Wall Straps
Required Every
4 ft. Minimum
Preferred Installation – Vertical Vent Through the
Roof
This venting configuration allows for the best stove
performance. The vertical pipe promotes natural draft
and with the chimney inside the dwelling, the flue
gases stay warm, thus rising at a consistent rate.
Listed Rain Cap
Flashing
3”
Min.
Clean-Out
Tee
Vertical Vent Into A Masonry Flue
Optional Complete Liner and
Listed Termination Cap
Optional Clean-Out
Access Door
Interior Vertical Vent into an
Existing Class A Chimney
Existing
Chimney
Pipe
Pipe Increaser
3”
Min.
Extend Pipe to
the Top if Existing Chimney is
Corroded o
Damaged
♦ USA & Canada – Requires an approved noncombustible hearth or floor protector, 3/8” / (10 mm) millboard
or equivalent (k = .84, r = 1.19) to extend 6” / 150 mm to the front of the glass door.
PAGE 19
INSTALLATION - Optima 3 INS
r
r
Standard Installation Configurations Into and Existing Fireplace – Model: Optima
IMPORTANT- Make sure the chimney and firebox are clean and free of soot and ashes before installation begins. Fail-
ure to do so may result in the transfer of soot into the room by way of the room air blower.
(USA only) Venting Into an Existing Chimney
This pellet insert may be installed into a masonry
fireplace (built to UBC 37 or ULC S628 standards) or
a factory built fireplace (built to UL 127 or ULC S610
standards) as illustrated on this page. When installing
into a masonry chimney, it is recommended that the
exhaust vent be extended to the top of the chimney
as shown on the following page. However, if the vent
pipe does not extend to the top of the chimney, the
vent must extend a minimum of 18” above the
damper. You must seal the damper area so that the
The vent pipe must
extend a minimum
of 18" above the
damper. The chimney must not be
corroded or damaged in any way fo
this type of installation to be permitted.
Direct Connection
(not allowed in Canada)
air / exhaust in the chimney cannot communicate with
the air in the fireplace firebox (this is a positive flue
connection. See the following instructions for one
method of sealing flue).
(USA & Canada) Direct Connection / Positive Flue
Connection
In Canada, this appliance requires a full reline when
installing into a masonry fireplace. In the USA, as a
A non-combustible
seal is required at
the damper area (to
prevent dilution ai
from entering the
chimney). See Positive Flue Connection
Methods on this
page.
minimum the vent connector from the insert flue outlet must extend a minimum of 18” above the damper
and the damper area must be sealed to prevent dilution air from entering the chimney which will affect
proper drafting of appliance.
See the following instructions for acceptable methods
for sealing chimney throat.
Approved Methods of Achieving a Positive Flue Connection - A qualified installer should evaluate the existing fireplace to determine the best method for
achieving a positive flue connection between the vent
pipe or liner and the chimney. The most common
method for achieving a positive flue connection in
masonry fireplaces is to secure a seal-off plate (i.e.
22-gage sheet steel) in the fireplace throat using masonry screws. Other acceptable methods include
packing noncombustible material (i.e. rockwool)
around the vent pipe or using a flue adapter. Whatever “seal off” method is used must effectively seal
the area to prevent room air passage to the chimney
cavity of the fireplace.
3 INS
Optional
Access
Door
Clean-
out
Tee
♦ USA & Canada – Requires an approved noncombustible hearth or floor protector, 3/8” / (10 mm) millboard
or equivalent (k = .84, r = 1.19) to extend 6” / 150 mm to the front of the glass door.
PAGE 20
INSTALLATION
V
r
INSTALLING OPTIMA 3 INS (CONTINUED)
IMPORTANT- Make sure the chimney and firebox are clean and free of soot and ashes before installation begins. Failure to do so may result in the transfer of soot into the room by way of the room air blower. Do not block opening at front
of insert (below door).
Full Chimney Reline
(Recommended for ALL chimney installations)
Approved Liner for Factory Built (ZC) Fireplaces
and Masonry Fireplaces
is 2100HT (degree F.)
liner listed to UL 1777 o
ULC S635.
Positive Flue
Connection
Recommended
IN CANADA – Installing as a Horizontal Vent
is not allowed. The fireplace chimney must
be fully lined.
U.S.A. – The insert may
be installed as a Direct
Vent (horizontal vent
through the chimney
structure) in masonry
fireplaces if local codes
will permit.
Canada – Installing an
insert a s a Directis not allowed. The fireplace chimney must be
fully relined from the
insert outlet to termination.
Horizontal Vent (Direct Vent)
ent
Clean Out
Tee
VENT TERMINATION WHEN LINER IS USED.
A section of pellet vent pipe is required at the top where
exposed to the elements (see illustration below).
1' Section of
PL Vent
3" or 4" liner
(listed to UL 1777
or ULC S635)
Listed Pellet Vent Cap
Chase Cover
♦ USA & Canada – Requires an approved noncombustible hearth or floor protector, 3/8” / (10 mm) millboard
or equivalent (k = .84, r = 1.19) to extend 6” / 150 mm to the front of the glass door.
PAGE 21
CARE AND OPERATION
CONTROL BOARD OPERATION
Stove On / Off Button – This button will turn your
stove on or off while in Manual or Automatic mode (see
page 25 for details). The green on / off light at the top
of control board will indicate the on / off status.
Heat Output Button – The heat output button has
three selection settings, Low, Medium and High.
Pressing the button will scroll the red indicator lights
from Low to High. The button controls the pellet feed
and combustion airflow simultaneously. The control
board is preset to provide the optimum ratio of fuel and
air at each setting. Settings can be changed at any
time but will only take affect after the start-up cycle is
complete. Each press of the Heat Button will increase
the heat output, and will scroll to the lowest setting after reaching the maximum setting.
Blower – The blower button operates the room air
blower. This will change the flow of hot air into the
room. Three choices are available Low, Medium, and
High. When the Blower Button is pressed the yellow
indicator light will scroll to Low, Medium, or High.
When running your stove on high heat output,
the control board will not allow you to select
the low blower speed. This is a safety precaution to protect against overheating. Blower settings can be changed at any time, but will only
take affect after the start-up cycle is complete.
Fault Mode – The control system automatically monitors the flame using a photoeye. If the stove runs out of
pellets the control board automatically goes into a
“fault” status. The control board will initiate the shut
down cycle and safely shut down the stove leaving it in
the “fault” mode. The on / off indicator light near the top
of the control board will flash rapidly when in this
mode. After refilling the hopper with pellets, press the
Start Button. If a thermostat is not being used the
stove will go into the start-up cycle. If a thermostat is being
used the stove will go into the start-up cycle if the thermostat is in the demand mode. If the thermostat is in the
stand-by mode when the fault is cleared, the stove will remain in the stand-by mode until it closes again.
NOTE – If the fuel feed trim or combustion air trim
needs to be adjusted, contact an authorized Lennox
Hearth Products Technician to calibrate internal software. It is recommended that the damper be used to
fine-tune your stove to your particular fuel and installation configuration (see Damper Adjustment on page 12
and Damper Adjustment Guideline on page 26).
POWER LED
(fault when
flashing)
HEAT LED
ON / OFF
START
HEAT SELECT
BUTTON
BLOWER
LED
BLOWER
SELECT
BUTTON
PAGE 22
CARE AND OPERATION
A
Note: The control board is equipped with an internal
memory which will recall the last setting and mode
the stove was in prior to loss of power. Because we
individually check each stove prior to packaging, one
of the two scenarios will appear when you first plug
in your stove.
1). The Green LED at the top of the control board will
illuminate and the blowers will be running. This is a
standard cool down mode and will last no longer than
five minutes. This happens during testing when the
stove is turned off (which initiates cool down mode)
and then is unplugged.
2). The Green LED at the top will illuminate and the red
and yellow LED’s will illuminate on the control board,
indicating that the stove is in the run mode. This happens during testing if the stove is unplugged without
first turning the control board off (the control board
remembers its last setting, which was the run mode).
If your stove follows that described in number 2 above,
simply press the ON / OFF button once to turn the stove
off, this will initiate the cool down mode. The stove can be
restarted at any time during the cool down mode by
pressing the ON / OFF button once.
Start-up Sequence of Events
1. Fault time delay is initiated (14 minutes 15 seconds).
2. Fuel feed rate of 100% for 1 minute 50 seconds (when
trim left at factory setting of 0) auger trim setting
ranges from 1:26 to 2:14 depending on -4 to +4 respectively.
3. Exhaust blower operation starts (medium range voltage).
4. Room air blower operation starts (medium range voltage).Power LED is activated (steady green).
6. Igniter operation activated (line voltage).
7. Photoeye looks for flame (flame dominance scheme).
8. * If needed second & third fuel dumps are available at
predetermined time deliveries (4 minutes & 6 minutes
after initial).
Flame Detection Sequence of Events - This is what
happens after flame has been detected.
Happens within the Start-up Time Delay sequence.
0 to 1 minute no fuel feed.
Flame settles.
Bed of embers built.
1 minute mark: Fuel Feed rate 20% for 4 minutes 15
seconds (1 second on / 4 seconds off).
2 minute mark: igniter turns OFF / room air blower =
setting / LED indicator still active.Start-up Time de-
lay ends 14 minutes 15 seconds after pushing the
start button!
PHOTOEYE
PN LABEL
LOCATION
POWER
SELECT
MAIN
RNESS
H
FUSE
PAGE 23
CARE AND OPERATION
Combustion Voltage Trim Steps:
1. Push button “twice” for access voltage calibration mode.
2. Identify the current calibration setting indicated by one
YELLOW LED bar.
3. Push the “HEAT” control button to adjust setting UP. Each
push raises the YELLOW LED bar & increases voltage 5%.
4. Push the “BLOWER” control button to adjust setting
DOWN. Each push lowers YELLOW LED bar decreasing
voltage 5%.
5. Push the calibration button once to lock in selected results.
Fuel Delivery Rate
The feed rate button manages the fuel delivery rate by controlling
the amount of time the auger motor will run as follows:
Optima 2 FS
Feed Rate
Setting
Low = 1 on/5.40 off 1.5 Lb.’s hr. 13,000 BTU/hr 37
Med.= 1 on/3.30 off 2.5 Lb.’s/hr. 21,000 BTU/hr 22
High = 1 on/1.75 off 3.8 Lb.’s/hr. 32,000 BTU/hr 15
Note: Maximum hopper capacity is 55 lb.'s
Optima 3 FS
Feed Rate
Setting
Low = 1 on/4.50 off 1.7 Lb.’s/hr. 14,000 BTU/hr 41
Med.= 1 on/1.90 off 2.6 Lb.’s/hr. 22,000 BTU/hr 27
High = 1 on/1.15 off 4.5 Lb.’s/hr. 38,000 BTU/hr 16
Note: Maximum hopper capacity is 70 lb.'s
Optima 3 INS
Feed Rate
Setting
Low = 1 on/4.50 off 1.7 Lb.’s/hr. 14,000 BTU/hr 30
Med.= 1 on/1.90 off 2.6 Lb.’s/hr. 22,000 BTU/hr 20
High = 1 on/1.15 off 4.5 Lb.’s/hr. 38,000 BTU/hr 11
Note: Maximum hopper capacity is 50 lb.'s
* Feed rates are approximations only. Actual feed rate will
vary depending on size, quality and length of fuel used and
variations in line voltage.
♦ Estimated heat input based on fuel value of 8400 BTU per
lb. of fuel.
Auger Motor
ON / OFF Time
(seconds)
Auger Motor
ON / OFF Time
(seconds)
Auger Motor
ON / OFF Time
(seconds)
* Lb.’s per hour
fuel delivery
* Lb.’s per hour
fuel delivery
* Lb.’s per hour
fuel delivery
♦ Approximate
BTU per hour
fuel delivery
♦ Approximate
BTU per hour
fuel delivery
♦ Approximate
BTU per hour
fuel delivery
Burn
Time
(hours)
Burn
Time
(hours)
Burn
Time
(hours)
Your pellet stove can be operated in either manual
or automatic mode. The manual mode is used
when operating without a thermostat. The automatic mode is used when utilizing a wall thermostat. When utilizing the thermostat capability the
burn time can be extended dramatically depending
on thermostat setting. Note: It is normal for some
ash to build up on the inner glass surface at the
lower burn settings.
Initial Start-Up / Empty Hopper or Feed Tube:
During an initial start-up, or in the case where the hopper has run out of fuel, it will be necessary to prime the
auger feed system. The control board is set to deliver
fuel for approximately 2 1/2 minutes during start-up,
which, with a fully primed auger tube, will provide the
appropriate amount of fuel for ignition.
When first starting your pellet stove, it will be necessary to prime the auger tube. To prime the auger
tube you need to first fill the hopper with pellets,
and press the ON button on the control board. Wait
approximately 2 1/2 minutes and turn the control
board OFF and then back ON again. Wait an additional 2 1/2 minutes (if necessary) and continue this
process until fuel begins to fall into the UltraGrate. Remember, different brand fuels feed at
different rates.
Once fuel starts to enter the UltraGrate, turn the
stove OFF and then back ON. The auger tube should
now be primed and the stove should deliver enough
fuel for proper ignition. It may be necessary to follow
these procedures in the event that the hopper runs
completely out of fuel.
PAGE 24
CARE AND OPERATION
MANUAL OPERATION
Pressing the stove on / off button initiates the start-up
cycle. The green on / off light, near the top of the control
board, will light up to indicate the “on” status. The fan
speeds and pellet feeds are fixed during this time to provide appropriate ignition. The Fast-Fire igniter system
will light the pellets feeding to the UltraGrate, after
about 3 minutes. The start-up cycle is in effect for approximately 2 minutes after flame is detected in the UltraGrate. A photoeye, monitors the existence of flame.
After the start-up cycle your stove will be in the run mode.
At this point the stove will operate in the heat output and
blower settings selected. These settings can be selected
either during or after the start-up cycle. Pressing the
stove on / off button during the run mode will initiate the
shut down cycle. The on / off indicator light will turn off.
The pellets will stop feeding and the blowers will run at a
fixed speed for approximately 10 minutes. At this point
your stove is safely shut down and can ONLY be restarted by pressing the stove on / off button again.
AUTOMATIC OPERATION
Your stove is capable of running in an automatic mode with
the use of a wall thermostat. NOTE: For the thermostat to
control the operation of the stove, the “on” status must be
active on the stove’s on / off button. The thermostat will
establish either a demand mode or a stand-by mode. The
thermostat should be set for the desired room temperature.
If the room temperature drops below the level on the thermostat the stove will automatically begin the start-up cycle,
as explained above in the Manual Operation section. Once
the start-up cycle is completed the stove will operate in
whatever heat and blower setting you have selected. For
best operation under thermostat control, the Medium or
High settings recommended. When the desired room temperature is reached, the stove will automatically go into the
shut down cycle. The pellet feed will stop and the blowers
will continue for a controlled time allowing safe shut down of
your stove. All lights will remain on when the thermostat is
open. The heat and blower settings can be changed at any
time, but only take affect during the run mode. When the
temperature in the room drops to the level set at the thermostat, the stove will again begin the start-up cycle and
resume automatic operation in the demand mode.
NOTE: If the stove on / off button is pressed while the
thermostat is in the standby mode the stove will not restart until the thermostat closes.
LIGHTING PROCEDURE WITHOUT IGNITER
Your pellet stove can be lit manually without using the
automatic igniter by following the procedure below. If your
stove is set up to run on a thermostat, the thermostat circuit needs to be closed (as if permanently in the demand
mode). The thermostat wires should be removed from the
rear of the stove and replaced with the jumper originally
supplied with your stove. If a jumper is not available the
thermostat should be set to the highest setting. This will
keep the stove in the demand mode. If your automatic
ignition system should ever need troubleshooting, repair
or replacement, please contact your authorized Lennox
Hearth Products dealer.
1. Press the ON button on the control board.
2. Wait approximately 2 1/2 minutes while the pellets
prime the grate (the pellets will stop feeding automatically).
3. Place a small amount of an approved (non-volatile)
fire starter on top of the pellets in the grate, (see your
authorized Lennox Hearth Products dealer for appropriate fire starting products). DO NOT USE FLAMMABLE LIQUIDS TO START YOUR STOVE!
4. Light the “fire starter” with a match and close the
door.
5. The photoeye will detect that a flame is present and
will begin feeding pellets in approximately 2 minutes.
6. The control board will continue to go through the
normal start-up cycle and the flame should be well
established within 10 minutes from the time the ON
button was initially pressed. Remember – you are
now in manual mode and heat settings should be selected to the desired room heat level.
TURNING OFF YOUR PELLET STOVE
Press the stove on / off button to initiate the shut down
cycle. The pellets will stop feeding and the blowers will
continue to run on a timed cycle. The stove will shut
down safely upon completion of the shut down cycle.
PAGE 25
CARE AND OPERATION
DAMPER OPERATION (All models)
The damper is a plate that helps control the amount of
airflow supplied for combustion. With the damper pushed
all the way in the airflow is at its minimum. As the damper
is pulled out, more air is allowed to flow.
It will be necessary to monitor the appearance of the
flame during the first 4-8 bags of pellets. If your flame is
smoky red / orange with evidence of soot at the top of the
flame, you need more combustion air; pull the damper
out one notch and re-evaluate the appearance of the
flame. It may be necessary to continue this process, moving the damper one notch at a time until proper combustion is attained (the flame should become yellow and begin to “dance”). If the flame is “short” at the higher burn
rates, or if the pellets are burning up in the grate before
new pellets are fed into the fire, push the damper in one
notch and monitor the flame. Continue the process of
moving the damper one notch at a time and evaluating
the flame until proper flame appearance is achieved.
Once the damper has been properly set, it should not
need adjusting unless you are changing the grade of pellet fuel, in which case the damper may need to adjusted.
DAMPER ADJUSTMENT GUIDELINE
Lack of Combustion Air: By opening the damper, this
will increase combustion air delivery. Symptoms of insufficient combustion air include; unburned fuel, lazy smoky
or red / orange flame, excessive ash or soot, excessive
buildup on glass.
Contributing factors:
• High Altitude – Lack of oxygen
• Restrictive Venting (elbows, horizontal runs,
cold external chimneys, etc.).
Note: Excessive amounts of fly ash built-up in the grate,
clinkers in the grate or leakage of air (if the grate is not
properly seated) will starve the fire for air. See Routine Maintenance, on page 28 to 33 for information on cleaning the stove.
• Dirty / Poor Quality Fuel.
Excessive Combustion Air: By closing the damper, this
will reduce combustion air delivery. Symptoms of excessive
air include; fuel burns too quickly (results in smoking or
smoldering pellets), white to yellow flame, etc. If the
damper is open too much, the burning pellets will lift off
the grate and fly up into the air much like popping corn
does.
Contributing factor:
Correct Combustion Air / Proper Burn Characteris-
tics: When the damper is correctly set, the burning pel-
lets should move (wiggle) around slightly and the flame
should be bright yellow.
AUTOMATIC SAFETY FEATURES
Power Outage:
During a power outage, the stove will shut down safely.
The stove will automatically restart when power is resumed. The solid state control board has an internal
memory that will retain heat output and blower speed
settings through voltage interruptions.
A small amount of smoke may leak from the top of
the window glass, the hopper and from the combustion air intake, if the stove is vented horizontally with
no vertical pipe. This will not persist for more than 3 to 5
minutes and will not be safety hazard. It may set off your
smoke alarm.
Note: If the area in which you live is prone to frequent
power outages, it is recommended that a minimum of 8
feet (2 ½ meters) of vertical vent pipe be included in a
freestanding installation to induce a natural draft in the
event of a power failure.
Overheating:
A high temperature disc (thermal switch) will automatically shut down the stove if it overheats. Allow up to 45
minutes cooling time before re-lighting. Keep enough
convection air (from the room air blower) going through
stove to keep it cooling properly, this will ensure long life
of the stove. If the overheating continues, contact your
authorized Lennox Hearth Products dealer for more information.
• Venting system providing excessive draft.
PAGE 26
CARE AND OPERATION
FUEL
Clinkering - Silica (or sand) in the fuel, along with other
impurities, can cause clinkering. A clinker is a hard mass
of silica formed in the burning process. Clinkering is a
function of the fuel, (not the stove), but adversely affects
the performance of the stove by blocking off the air passages in the grate. Even P.F.I. approved pellet fuel may
tend to clinker. A clinker can be removed from the UltraGrate and placed in the ash pan with the use of the
grate scraper / ash pan tool furnished with your stove.
See Routine Maintenance (pages 28 - 33) for more information on cleaning.
Ash - The frequency of removal of the ash and maintenance performed on the stove is directly proportional to
the ash content of the fuel and the operation duration of
your pellet stove. Low ash fuel may allow longer intervals
between cleaning, however, a stove burning high ash fuel
may need to be cleaned as often as everyday.
PLEASE NOTE: Lennox Hearth Products has no control
over the manufacturing of pellet fuel and will not be held
responsible for poor stove performance or any damage
caused by poor quality pellet fuels.
Fuel Feed Rates - Different brands of pellets will feed at
varying rates due to their size and density (length and
diameter). This may require a slight adjustment in the
damper control (see pages 12 & 26) or the fuel feed trim
to compensate (see note on page 22).
UltraGrate
Fuel Specifications - Using the UltraGrate burn sys-
tem, this appliance has been designed to burn wood residue pellets with up to 3% ash content. Agricultural pellets
(i.e.… Corn, alfalfa etc.) are not permitted to be burned in
the stove. Dirty fuel will adversely affect the performance
of the stove.
Caution: The use of unapproved, dirty, wet and / or high
salt content fuel will void the warranty!
Wood pellets manufactured to the pellet fuels institute
(P.F.I.) certification standard are available in two grades,
Standard and Premium. The primary difference between
the two is the ash content of the pellets.
The P.F.I., specification for standard grade & premium
grade residential pellet fuel is as follows:
• CHLORIDES (Salt): Less than 300 p.p.m.
• BULK DENSITY: 40 lb. / Cu. Ft. minimum
• MOISTURE CONTENT: 8% maximum
• ASH CONTENT: < 3% maximum (standard grade)
< 1% maximum (premium grade)
• FINES: 0.5% maximum through a 1/8” screen
• BTU CONTENT: Minimum 8200 BTU per pound.
Pellet Feed / Pellet Size - The pellet feed system is designed to handle a wide range of pellet sizes up to a
maximum of 5 / 16" diameter. Different pellets may feed
at considerably different rates. You may notice a difference in the burn if you change pellet fuel sizes. The
longer the pellet, the slower it will feed and vice versa. If
the stove will not stay burning at the minimum fuel feed
setting, those particular pellets may not be feeding fast
enough. If this happens, reduce the amount of combustion air by adjusting the damper. See pages 12 & 26 before adjusting the damper.
Long Burn Time - When operated correctly, this appliance cannot be overfired. Continuous operation at a
maximum burn can, however, shorten the life of the electrical components (blowers, motors, and electronic controls), and is not recommended. Typical approved operation would include running at the low to mid range setting
with occasional running on the maximum setting during
the coldest periods of the winter. The blower speed control should be turned to high when operating the stove on
the high heat setting. A lower heat setting is recommended for overnight operation or when the room is vacated for long periods of time.
Note: See Fuel Delivery Rate on page 24 for burn times.
PAGE 27
ROUTINE MAINTENANCE
)
* Inspect your stove or insert at minimum frequency stated until you establish a minimum frequency required for
your installation (frequency will vary depending upon fuel BTU value / ash content, usage, and misc. installation
variables). Unplug and Ensure Stove is Cold Before Performing Any Maintenance Work
nance with annual maintenance. The following areas need to be inspected and cleaned as part of annual maintenance:
ROUTINE CLEANING
Unplug and Ensure Stove is Cold Before Performing
Any Maintenance Work.
The following areas need to be inspected and cleaned
during Routine Cleaning:
• UltraGrate (burn grate)
• Ash Pan
• Heat Exchange Tubes / Tube Scraper
• Photoeye
• Exhaust Passages and Vent Pipe
• Ash Clean-out Ports
ASH PAN (Optima 2 FS and Optima 3 FS)
All ash removal and cleaning should be done while
stove is cold.
The ash pan will have to be emptied periodically, depending on the amount of fuel consumed. To access follow
steps one through four:
1. Open the glass door, then, using the ash pan / grate
scraper tool, lift the UltraGrate® out and sweep the
top ash into the pan below.
2. Remove the ash pan cover located below the door by
pulling forward until magnets release.
Models Optima 2 FS and Optima 3 FS
• Gaskets
• Window Wash
• Rear Stove / Insert Compartment
UltraGrate (Burn Grate for All Models)
The UltraGrate should be inspected periodically to assure that the air holes have not become clogged with ash
or clinkers. The UltraGrate can easily be cleaned with
the grate scraper / ash pan tool, or it can be removed for
Ash Pan
Cover
cleaning. It is very important to monitor the ash build up
under the UltraGrate, as excessive amounts of ash will
block combustion air from entering the grate, causing
pellets to pile-up in the grate. The grate cleaning procedure is the same for all models.
UltraGrate
Model Optima 3 INS
. Include routine mainte-
UltraGrate
Ash Pan
Cover
* (Minimum Frequency of 1 day to 2 weeks)
* (Recommended Frequency of 2 days – 2
weeks
Optima 3 INS has a
handle on the exterior
of the ash pan cover for
easy access and removal.
PAGE 28
ROUTINE MAINTENANCE
3. Release both ash pan latches and pull forward.
Models Optima 2 FS and Optima 3 FS
Ash
Pan
Latch
4. Remove the ash pan. Place ashes into a noncombustible container. When finished, close the
glass door and slide the ash pan back into the stove
and close the ash pan door. Reinstall ash pan cover
panel.
* (Minimum Frequency of 2 days – 2 weeks)
HEAT EXCHANGER TUBES (All Models)
Only Clean Heat Exchanger Tubes When Stove is
Cool.
Tube Scraper
After lifting the hopper lid, use the hole in the handle of
the Grate Scraper Tool to “grab” onto the rod. Using the
Grate Scraper Tool, pull the rod up and out towards the
opening of the firebox. Continue pulling until the Tube
Scraper reaches the top of the firebox. The rod is located
on the outside, above the door. Pull the tube scraper rod
out, then repeat 2–3 times to remove fly ash from the
heat exchange tubes.
Tube Scraper
Use tool to grab scraper rod.
Ash
Pan
Model Optima 3 INS
Latch
Tool
Tube
Scraper
Rod
PAGE 29
ROUTINE MAINTENANCE
Pull Scraper Rod out & in several times
REMOVABLE BAFFLE PLATES (All Models)
At least once a year, the baffle plates (located in the
firebox below exchange tubes) should be removed
for cleaning (vacuum out, then reinstall baffle plates)
Removing Baffle Plates
The baffle plates contain keyhole slots allowing the
screws to remain in place while removing the baffle. Lift
each plate up and forward until screws release through
the keyhole slots. Remove baffle plates diagonally
through door opening.
PHOTOEYE (Freestanding and Insert)
ENSURE STOVE/INSERT IS COLD BEFORE BEGINNING
As a part of normal maintenance, buildup of pellet debris
(fines) must be periodically removed from the photoeye
This filter can be cleaned by following either proce-
filter.
dure (A) or (B) on this page:
Note: The photoeye views the fire through a filter. The
filter is located at the top of the feed chute near the hopper
on the right side. This area should be cleaned periodically
to prevent excessive build-up, which may cause the stove
to go into “fault” mode.
(A) Cleaning Photoeye Filter Without Removing it:
1. Open the front door to access the feed chute.
2. Remove the buildup on the filter as explained in either “a” or “b” (note: it may help to use a mirror and a
flashlight to view the filter as shown in the following
picture):
Scraper
Rod
pulled
Mirror
Feed Tube
a. Using a long soft bristled brush (i.e. artists brush),
extend it deep into the feed chute and sweep away
any pellet fines (on right side).
b. Canned compressed air can also be used to re-
move pellet debris from the photoeye filter (use only
canned compressed air such as what can be commonly purchased at a computer or office supply
store and some drug stores). Read and follow the instructions on the spray can. Attach the tube
(straw) to the nozzle on the canned air (a tube is
commonly provided with compressed air. It is similar in use to the tube supplied with WD-40, Lubricant). Spray the canned air deep into the feed
chute until all “fines” are removed (direct it to the
right side).
NOTE: The photoeye lens should be inspected annually
and cleaned if necessary as shown in method (B).
(B) Removing Photoeye Filter for Cleaning:
1. Lift off cover plate and turn over (the photoeye is attached to the inside surface of cover). Wipe away any
dust or debris from the photoeye lens (see following pictures).
Photoeye Access Inside Hopper
To access photoeye, open hopper and remove
the 3 nuts on cover plate (see picture below).
Using a 11/32"
nut driver remove
the 3 nuts to access photoeye
and filter.
Photoeye Cover
Plate.
PAGE 30
ROUTINE MAINTENANCE
r
r
A
Clean PhotoEye Lens
Clean Photoeye Lens
Clean-Out Tee
Remove cover, then
remove ash
Remove Filter and Wipe Clean
Filter
(Minimum frequency of 4 weeks - 6 months)
CAUTION: If the filter is not reinstalled, reflective
light in the room may result in a fault, thus shutting down of the unit.
EXHAUST PASSAGES AND VENT PIPE (All Models)
Inspect frequently and clean when necessary. Fly ash will
accumulate at all bends in the exhaust system.
Note: Large amounts of fly ash build-up will create a lack
of combustion air. Removing the clean out tee cap on
vertical installations will allow an inspection of the ash
build-up in the clean out tee and will help you to decide
how frequently more extensive cleaning must be performed.
Clean-Out Tee
Rain Cap
* (Minimum Frequency of 1-2 months)
ASH CLEAN-OUT PORTS
Make sure stove is cold. Ash clean-out ports must be
cleaned as part of routine maintenance.
Accessing Clean-out Ports
Optima 3 Series (Firebrick panels must be removed
to access):
IMPORTANT: Clean-out cover plates must be installed when operating unit.
Retainer Brackets
REMOVE COVERS AND
VACUUM OUT FLYASH Loosen screws (1 pe
clean-out) and lift each
plate out. Use an approved ash vacuum o
brush to remove ash.
fter cleaning, replace
clean-out plates and
tighten screws.
REMOVE RETAINER BRACKETS AND LIFT
FIREBRICK PANELS UP AND OUT – Using
a 5/16" nut driver, remove 2 screws in each
firebrick retainer bracket (located on the
sides of the inside firebox). Lift panels up
and out
.
* (Minimum Frequency of 1-2 months)
PAGE 31
ROUTINE MAINTENANCE
DOOR ROPE GASKET (All Models)
The condition of the rope gasket around the door and
windows should be checked periodically and replaced or
repaired if necessary. A one-inch strip of paper may be
used to perform a test of the integrity of the door seal.
Close the door on the paper in at least eight points (see
illustration, “Door Rope Gasket”). It is normal to feel only
a slight amount of friction. The door gasket does not need
to be “tight” in all areas, since a small amount of leakage
is not hazardous or detrimental to the performance of
your stove.
Door Rope Gasket
(check seal at points indicated)
CREOSOTE REMOVAL (All Models)
When wood is burned slowly, it produces tar and other
organic vapors, which combine with expelled moisture to
form creosote. The creosote vapors condense in the
relatively cool chimney flue of a slow-burning fire. As a
result, creosote residue accumulates on the flue lining.
When ignited this creosote makes an extremely hot fire.
The chimney connector and chimney should be inspected at least once every two months during the heating season to determine if a creosote buildup has occurred.
If creosote has accumulated it should be removed to reduce the risk of a chimney fire.
Window Wash
Periodically remove five screws, which secure the window wash bracket to the door frame, using a 1/4” socket.
Lift out the widow wash bracket, and set aside. Using a
small brush, sweep out all debris buildup from behind the
window wash bracket. After all debris has been removed
re-attach the window wash bracket. Inspect the window
wash gap to ensure that it is open and even from side to
side. A restricted or blocked gap will decrease the effectiveness of the window wash.
Remove Window Wash Bracket (5 screws)
* (Minimum Frequency of 1 year)
Checking Door Seal
Important Note: Paper should be no longer than a
dollar bill.
Sweep Away Debris from Behind Window Wash Bracket
* (Minimum Frequency of 1 year)
PAGE 32
ROUTINE MAINTENANCE
SMALL AREA PAINT TOUCH-UP
The stove body is painted with a quality high-temperature
stove paint. Use only model TSPK-B Stove Paint, Catalog # 70K99. Do not touch-up your stove with any other
paint.
Using one small piece of 320 grit sand paper and lightly sand
the blemish so that the edges are “feathered” or smooth to the
touch between the painted and bare surfaces. Do not let the
sand paper gum up with paint, as this will cause scratches on
the metal surface. If there are any scratches, use 600 grit
sandpaper instead. Mask off surfaces you do not want painted.
Paint lightly over the bare surface first as this will act as an undercoat. Then paint over a larger area in smooth even strokes
to blend.
REAR STOVE COMPARTMENT (All Models)
The rear stove compartment should be cleaned periodically (a minimum of once a year). DISCONNECT ELECTRICAL CORD PRIOR TO CLEANING STOVE. Any
household dust, pet hair or sawdust should be vacuumed
or wiped out of the rear compartment of the stove, room
air blower, and exhaust blower (paying special attention
to vacuuming out the intakes of both blowers). The electrical components should be wiped clean.
MOTOR LUBRICATION
The blowers are permanently lubricated by the manufacturer. Do not apply oil to any part of the blower, doing so
may cause damage.
Opening Side Panels Optima 2 FS and Optima 3 FS
Using a 11/32” nut driver remove the nut from the inside
of the hopper on the side (see following picture). Reinstall
nut to prevent panel from opening accidentally!
Optima 2 FS and Optima 3 FS
Opening Side Panels
Hopper Lid
Remove nuts on hopper
sides (one each side) to
open side panels
PAGE 33
SPECIFICATIONS - Optima 2 FS
Flue Size 3” / 76mm Rear
Width, Overall 23” / 584mm
Depth, Overall 22 3/4” / 578mm
Depth, Overall w / 3” tee 28 1/2” / 724mm
Height 28 5/8” / 727mm
Floor to Rear
Flue Center 11 1/4” / 286mm
Facing back of unit,
outside edge of left side
to center of rear
flue outlet center 6 1/2” / 165mm
Floor to Rear
Outside Air Inlet
Located on centerline of pedestal back 5” / 127mm
Facing back of Unit
outside edge of right side
to center of air inlet 11 1/2” / 292mm
Floor Protection + Front and Sides: 6”/152mm
Requirements Back: Up to 6” / 152mm
Standard Features Fastfire Self Igniter
Wall Thermostat (wire in-
cluded)
Hopper Capacity 55 lbs.
Burn time ♦ 15-37 hours
Fuse, Control Board 5 Amp, 250 volt, 3AG *
Fuse, Igniter 6 Amp, 125 volt *
Options Nickel or Gold Trim Kits
4” Quick Disconnect
Log Set
8 7/8"
Note: Dimensions shown are approximations only (+/- ¼”)
+ Non-combustible thermal rated floor protection must
be used when installed on carpet (see Floor Protection,
page 6). When installed at clearances less than 6”,
the floor protector is only required to extend to the
wall.
♦ Fuel delivery and burn times will vary depending
on size and type of fuel used. Estimated heat input
based on fuel value of 8400 BTU per lb.
* Fuses are rated as fast blow.
BACK VIEW
5 1/8"
SIDE VIEW
24 7/8"
25 7/8"
31 3/8"
16 7/8"
5 1/8"
12 15/16
30 3/4"
PAGE 35
SPECIFICATIONS - Optima 3 INS
Flue Size 3” Rear
Width, Overall front (w/o surround) 26”
Width, Overall back (w/o surround) 24 1/8”
Options Nickel or Gold Trim Kits
4” Quick Disconnect
Log Set
Sm./Med./Lg. Surrounds
Gold Surround Trim Kits
Wall Thermostat (wire in-
cluded)
and type of fuel) EPA exempt.
rpm
rpm
23 5/8”
Damper
Arm
SIDE VIEW
32 1/8”
13””
TOP VIEW
13 ¼”
19 7/8”
Control
Board
Note: Dimensions shown are approximations only (+/- ¼”)
+ Non-combustible floor protection must be used when installed on carpet (see Floor Protection, page 5).
♦ Fuel delivery and burn times will vary depending on size and type of fuel used. Estimated heat input based on fuel
value of 8400 BTU per lb.
* Fuses are rated as fast blow
PAGE 36
COMPONENT DEFINITIONS
AIR WASH
To inhibit buildup of soot on the door glass, air is delivered to the glass through an air wash system located in
the doorframe surrounding the glass.
AUGER
It transfers the fuel down the burner tube into the burn
grate.
AUGER MOTOR
Drives the Auger. Motor specifications are: .4 Amp, 1
rpm (revolutions per minute).
BLOWER, ROOM AIR (CONVECTION)
The blower function is to transfer the heat from the appliance to heat the room air.
BLOWER, EXHAUST (DRAFT INDUCER/COMBUSTION)
It has a radial impeller to deliver more air to the burn
grate. It pulls air into the burn grate by creating a negative pressure. This is done by extracting the exhaust
gases out of the firebox and pushing the exhaust downstream to the flue exit.
DISC, HIGH LIMIT (L250-30F, N / C)
There are 2 of these discs on this model. If a temperature reaches 250° F., the high limit auto reset will “trip”
and stop the flow of electricity to the auger motor. The
discs will not automatically reset until it has cooled below 220° F).
Disc for Room Air Blower – This disc is located
on the Room Air Blower jacket and is designed to
detect an overfire condition.
Disc for Combustion Air Inlet – This disc is located on the combustion air inlet and is designed
to detect reversed flow. If negative pressure in the
dwelling (i.e. An extremely tight house which may
not supply adequate combustion and ventilation
air) causes the exhaust to pull back from the combustion air inlet, the heat from the exhaust will result in heat activation of this disc.
HOPPER
The hopper is where the pellets are stored.
HEAT OUTPUT BUTTON
This is the main power button, which controls power to
the feed system auger motor and exhaust blower. It has
3 feed rate settings, which controls the burn rate.
PHOTOEYE
The photoelectric eye that senses the flame, or lack of.
It is designed to signal the control board to discontinue
power to the auger motor if it flame is not sensed in the
UltraGrate.
PRESSURE SWITCH
A safety device used to shut off the feed system (auger
motor) if there is too much back pressure in venting
system. Some possible causes are as follows:
♦ The venting system is obstructed.
♦ High altitude or other misc. environmental condi-
tions affecting exhaust flow.
♦ Improper venting system.
ULTRAGRATE (BURN GRATE)
This is where combustion occurs and may be referred
to as the "burn grate".
PAGE 37
WIRING DIAGRAM
PAGE 38
TROUBLESHOOTING Qualified Technicians Only
Unplug Appliance Before Performing Any Troubleshooting or Maintenance
PROBLEM CAUSE(S) SOLUTIONS
1. Fire burns with a
lazy orange flame.
Pellets build up in
the grate and there
is excessive glass
soot that is difficult to
remove (Ash and
soot are a product of
combustion with any
wood products, so
some build-up on the
glass is normal).
2. Fire goes out or
stove shuts down
automatically
3. Pellets will not
feed.
There is insufficient combustion air.
Stove has run out of fuel.
Pellets are not feeding.
The high limit disc (thermal switch) has
tripped.
There is too much combustion air for
the amount of fuel.
The hopper is empty.
The auger motor or control board may
be defective. The pressure switch tap
or hose may be blocked.
Back pressure in venting tripping pressure switch.
Thermostat is in stand-by mode.
Thermostat wires disconnect.
High limit disc (thermal switch) may
have been tripped.
Self-aligning bearings in auger motor
may be mis-aligned.
Lack of maintenance (clean Ultragrate, clean-out ports, exhaust
flow passages, venting system, exhaust blower intake, etc.
Remove any clinkers or ash from the bottom of the Ultragrate
that might be obstructing the primary air holes.
Check that the heat exchange tubes are not coated with ash.
Clean internal exhaust ducts.
Check gasket seal around the door. Use a thin strip of paper, 1
in. wide. Open the door and close it on the paper strip. A slight
friction should be felt when the paper strip is pulled. Repeat this
process at various locations around the door gasket. Replace
the door gasket if necessary.
Check gasket around ashpan.
Check for blockage in the air inlet tube or exhaust pipe. Clean
as Necessary.
Inspect glass seal to ensure that it is in good condition and is
properly seated to the door.
Fuel trim may need to be adjusted down for faster feeding fuels.
Change to a better grade of fuel if necessary.
Check that the damper has been opened enough for the amount of
fuel fed.
Have Your Authorized Lennox Hearth Products dealer check your
exhaust blower for proper operation.
The venting system design is too restrictive (call your authorized
Lennox Hearth Products Technician to evaluate how the installation
can be corrected to satisfy the exhaust flow requirements of the
appliance).
Refill hopper.
See (Pellets will not feed) this page.
Allow stove to cool for 1 hour and re-light. If the stove has been
operating at a medium to high burn rate and the room air blower has
been turned down low then the fan should be turned up higher. If
this problem persists (particularly at lower burn rates) then the high
limit disc should be replaced by your authorized dealer.
Adjust the damper to reduce combustion air flow.
Refill hopper.
Check to be sure that there is no blockage in the pressure tap or
hose. Have your authorized Lennox Hearth Products dealer diagnose the problem and clean or replace any necessary parts.
If new installation check for excessive 90˚ bends, long horizontal
runs or excessive vertical run of 3” pipe. Possibly change to 4” pipe.
If older installation check for excessive ash accumulation in pipe or
other obstructions. Clean out pipe.
Check to see if thermostat is set to low or if sun is shining directly
on thermostat.
Re-install wires.
Allow stove to cool. Increase room air blower setting.
Gently
tap the auger motor.
PAGE 39
TROUBLESHOOTING Qualified Technicians Only
Unplug Appliance Before Performing Any Troubleshooting or Maintenance
PROBLEM CAUSE(S) SOLUTIONS
4. Blowers will not
operate when the
start button is depressed.
5. There is soot or fly
ash in the house.
6. Stove acts as if a
fire is present when
there is not a fire in
the grate.
7. Stove will not light.
8. Fault
9. Blowers run continuously
10. All lights on control are on but nothing happens
There is no power to the stove.
There is no power to the control board.
The window is being cleaned when the
stove is operating.
There is leakage at the joints between
the exhaust blower, connection or exhaust pipe connections. This will be
evidenced by dust on the impeller of
the room air blower, and in the heat
exchanger area.
The vacuum cleaner is leaking.
Excessive sun light may be shining
directly into firebox from window.
The igniter element may have failed.
There is not enough pellets in the
grate.
Photoeye not detecting flame.
Stove has run out of fuel.
A disk has tripped / pressure switch.
Wire harness and/or control board has
been damaged – unplug stove and
contact dealer.
When using a thermostat. Thermostat
not calling for heat.
If not using a thermostat - Check thermostat jumper
Check that the stove is plugged in to the wall outlet.
Check to see if your circuit breaker has tripped.
Check the wire connections on the high limit disc and control board.
Turn down the room air blower or turn off stove before cleaning to
prevent dispersion of ash and soot into the room.
Seal up any leaks in the exhaust system with room temperature
vulcanizing silicone sealer (High Temperature RTV).
DO NOT use a standard household vacuum or “shop vac” as the
filters will leak the fine particles of ash. Clean the stove with an approved ash vacuum ONLY.
Block excessive sunlight. Call authorized Lennox Hearth Products
dealer if problem persists.
Check igniter element fuse in rear stove compartment. Call your
authorized Lennox Hearth Products dealer. See alternate manual
lighting procedure
Prime the feed system (see Initial Start-Up, page 24).
Check connection at control board following yellow wires to all connectors.
Refill hopper.
Blower intake, exhaust passages and / or venting system needs
cleaning (follow routine and annual maintenance procedures).
If this does not correct the problem contact your local authorized
Lennox Hearth Products dealer.
Contact your local authorized Lennox Hearth Products dealer.
The lights on the control board remain on even when the thermostat
is not demanding heat. When the thermostat demands heat the
stove will begin to operate.
Ensure that the thermostat jumper at terminal block is installed and
making good contact.
PAGE 40
TROUBLESHOOTING Qualified Technicians Only
Unplug Appliance Before Performing Any Troubleshooting or Maintenance
Troubleshooting Notes for Qualified Technicians only:
1.) If a ‘tri-ac’ (switching device within the controls) is blown for a particular component, it is possible for that component
to run continuously. The ‘tri-ac’ can be blown due to excessive heat or a voltage spike in excess of the specified +/10% of line voltage (120v).
2.) Many nuisance ‘faults’ can be avoided by properly ‘breaking-in’ the stove. It is strongly recommended that the stove
be run on the ‘high’ setting until 4 – 8 bags of fuel have been consumed. The auger / feed system will loosen up
during this period and begin to feed at a slightly faster rate which may have an impact during the ‘start-up’ routine.
3.) The igniter works by forcing air from the convection (room air) blower, through 2 holes in the igniter tube, and passing over the hot igniter probe. This hot air is what causes the pellets to ignite. It is very important that the convection jacket is properly sealed with high temperature RTV High Temperature Silicone (all seams and penetrations). If
there are enough leaks, the igniter will not receive enough air to promote ignition. It is also very important that the
holes in the igniter tube (located just inside the room air blower convection jacket) not become filled with RTV High
Temperature Silicone. Ignition will not occur if these holes are blocked.
PAGE 41
REPLACEMENT PARTS LIST
Door Parts & Body Components
Item # Part No. / Cat. No. Description Stove Model
2 14650460 Door Assembly, Cast Iron Firebox Optima 2 FS
2 14750458 Door Assembly, Cast Iron Firebox Optima 3 FS & INS
15051547 Gasket Kit, Door, ¾” Rope, (8 Ft.) Optima 2 FS
61051000 Gasket Kit, Door, 1” Rope, (7 Ft.) Optima 3 FS & INS
61057202 Gasket Kit, Glass (5/8" x 1/16" x 10 Ft.) All
H0257 • Glass, Front Optima 2 FS
H0258 • Glass, Side (order 2 if set is needed) Optima 2 FS
H0254 • Glass, Front Optima 3 FS & INS
H0255 • Glass, Side (order 2 if set is needed) Optima 3 FS & INS
3 14750406 Knob Kit, Door (includes latch, 3 washers, nut and
door latch receiver)
4 14750405 Opener, Door Handle All
5 14650446 Hinge Bracket Optima 2 FS
6 14750700 Hinge Bracket Optima 3 FS & INS
7 14650450 Panel, Left Side Optima 2 FS
8 14650451 Panel, Right Side Optima 2 FS
9 14750449 Panel, Left Side Optima 3 FS
10 14750448 Panel, Right Side Optima 3 FS
11 14650456 Panel, Rear Optima 2 FS
12 14750465 Panel, Rear Optima 3 FS
13 14750612 Panel, Left Side Optima 3 INS
14 14750613 Panel, Right Side Optima 3 INS
15 14750617 Panel, Top (hopper lid) Optima 3 INS
16 14650455 Panel, Top (hopper lid) Optima 2 FS
16 14750455 Panel, Top (hopper lid) Optima 3 FS
12051409 Knob, Control Panel Door (6 per package
w/studs)
•
Includes gasket.
Electrical Parts
Item # Part # Description Stove Model
17 12046300 Auger Motor All
27 12050011 Blower Assembly, Exhaust All
12056011 Blower Motor, Exhaust All
28 12146109 * Blower, Room air, Hard Washer All
18 16053941 Control Board Optima 2 FS
18 16052112 Control Board Optima 3 FS & INS
19 12147705 Disc, High Limit, 250 DG (L250-30F,60T21)
Set of 3
18150150 Fuse, Control Board, 5 Amp, 250 volt, Fast blow, 12
pk.
12055908 Fuse, Igniter, 6 Amp, 125 volt, Fast blow, 12 pk. All
20 12150213 Igniter Assembly, Replacement, 380 Watts, 3.3
Amp.’s, 1 each (includes fuse holder w/fuse)
22 14750404 Photoeye Kit, Replacement All
23 12058820 Power Cord, 8 feet All
25 16050001 Pressure Switch All
24 16050205 Thermostat, Wall (wire not included) All
26 12050815 Wiring Harness All
All
Optima 3 INS
All
All
All
PAGE 42
REPLACEMENT PARTS LIST
Firebox Parts
Item # Part # Description Stove Model
Auger System Components
Item # Part # Description Stove Model
37 12041300 Collar & Screw Set, Auger (Set of 3) All
38 20950088 Flange, Auger All
39 17150009 Scraper Rod Assembly Optima 2 FS
39 14750410 Scraper Rod Assembly Optima 3 FS & INS
40 11756300 Shaft, Auger All
Misc.
Item # Part # Description Stove Model
14650408 Ash Pan Optima 2 FS
14750409 Ash Pan Optima 3 FS
14750603 Ash Pan Optima 3 INS
12151308 Plate, Damper Optima 2 FS & Optima 3 FS
41 15050058 Filter, Photoeye All
14650060 Gasket, Photoeye Optima 2 FS
14750060 Gasket, Photoeye Optima 3 FS & INS
42 61050003 Gasket, Auger Flange, 5pc. All
43 61050005 Gasket, Exhaust blower, 5pc. All
44 61057203 Gasket, Room air blower, 5pc. All
45 61050016 Gasket, Quick Disconnect 5pc. All
12151307 Setscrew, Damper Rod (Set of 6) Optima 2 FS & Optima 3 FS
46 12055500 Tool, Grate Scraper All
47 12050093 Quick Disconnect 3” Vent Side All
* Includes gasket and four nuts.
2
3
PAGE 43
REPLACEMENT PARTS DIAGRAMS
12
6
7
10
13
11
14
PAGE 44
REPLACEMENT PARTS DIAGRAMS
920
15
1
24
16
17
22
23
25
26
27
18
PAGE 45
REPLACEMENT PARTS DIAGRAMS
28
32
37
38
29
30
33
34
39
40
31
35
41
PAGE 46
REPLACEMENT PARTS DIAGRAMS
42
44
46
43
45
47
PAGE 47
OPTIONAL ACCESSORIES DIAGRAMS
Optional Accessories
Item # Part # Model Description Stove Model
1 H0448 TKAO2-G Trim Kit, AO2 Gold Optima 2 FS
1 H0449 TKAO2-N Trim Kit, AO2 Nickel Optima 2 FS
1 H0450 TKAO3-G Trim Kit, AO3 Gold Optima 3 FS & INS
1 H0451 TKAO3-N Trim Kit, AO3 Nickel Optima 3 FS & INS
2 14M81 QDPC-4 Quick Disconnect Pipe Connector, 4” All
70K99 TSPK-B Touch-up Spray Paint Kit, Black All
3 H0442 SKSAO3 Surround Kit, Small, 30 ½” x 40 ¾”, Black Optima 3 INS
3 H0443 SKMAO3 Surround Kit, Medium, 34” x 44”, Black Optima 3 INS
3 H0444 SKLAO3 Surround Kit, Large, 38 x 48”, Black Optima 3 INS
4 H0445 STKSAO3Surround Trim Kit, Small, 30 ½” x 40 ¾”, Gold Optima 3 INS
4 H0446 STKMAO3Surround Trim Kit, Medium, 34” x 44”, Gold Optima 3 INS
4 H0447 STKLAO3Surround Trim Kit, Large, 38 x 48”, Gold Optima 3 INS
5 H0244 DLS-P Decorative Log Set, Pellet Optima 2 FS
6 H0464 DLS-AO3 Decorative Log Set Optima 3 Series
7 H0432 HEK-AO3 Hearth Extension Kit Optima 3 INS
H0416 ZCK-PI Zero Clearance Kit (for installing insert as a built-in) Optima 3 INS
1
Optima 3 FS & INS
Optima 2 FS
Converts from standard 3”
outlet to 4”
4”
5
6
3
4
7
PAGE 48
INSTALLATION TIPS
PAGE 49
SIMPLE OPERATING INSTRUCTIONS LABEL
PAGE 50
SAFETY/LISTING LABEL – Model Optima 2 FS
Note that your stove’s serial number is printed on the safety label, which is located near the inside of the hopper. Your
stove’s serial number is preceded by a “WH-”(Example WH-0000000).
PAGE 51
SAFETY/LISTING LABEL – Model Optima 3 FS and Optima 3 INS
Note that your stove’s serial number is printed on the safety label, which is located near the inside of the hopper. Your
stove’s serial number is preceded by a “WH-”(Example WH-0000000).
PAGE 52
OWNERSHIP RECORDS
Dealer’s Name:
Dealer’s Address:
City: State: Zip Code:
Serial Number: Date of Purchase: Date Installed:
Notes:
SERVICE AND MAINTENANCE LOG
Service Service Service
Date Technician Description
PAGE 53
1110 West Taft Avenue
Orange, CA 92865
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.