SUPREME FUSION 18 User manual

FIREPLACE INSERT, MODEL «FUSION 18»
Tested and listed to ULC S628 and UL 1482 by an accredited lab.
This unit is certified to comply with Phase II particulate emission standards from the
Environmental Protection Agency.
OWNER’S MANUAL
- INSTALLATION
- OPERATION
Important : Keep the owner’s manual for future use
This product is proudly manufactured in North America by:
3594 Jarry East
Montreal, QC, H1Z 2G4
Tel: [phone] Fax: [phone]
www.supremem.com
Revised: August 16th, 2016

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Table of Contents
1!SAFETY ........................................................................................................................................................4!
2!COMPONENTS............................................................................................................................................. 5!
2.1!Overall Dimensions ................................................................................................................................5!
2.2!Specifications .........................................................................................................................................6!
2.3!Combustion Air Control ..........................................................................................................................6!
2.4!Cold Hand Key .......................................................................................................................................7!
2.5!Chimney Sweeping Cap......................................................................................................................... 7!
2.6!Door .......................................................................................................................................................7!
2.7!Removable Ash Lip ................................................................................................................................7!
2.8!Blowers ..................................................................................................................................................7!
2.9!Surround ................................................................................................................................................8!
2.10!Adjustable Circulating Chamber............................................................................................................. 8!
2.11!Adjustable Legs...................................................................................................................................... 8!
2.12!Liner Adaptor.......................................................................................................................................... 8!
2.13!Metal Tag ...............................................................................................................................................8!
2.14!Serial Number ........................................................................................................................................9!
3!INSTALLATION INSTRUCTIONS...............................................................................................................10!
3.1!Preparing the Firebox for Installation ...................................................................................................11!
3.2!Liner Installation ...................................................................................................................................11!
3.3!Adjustable Circulating Chamber........................................................................................................... 11!
3.3.1!Assembly ......................................................................................................................................11!
3.3.2!Installation.....................................................................................................................................11!
3.4!Liner Adaptor Installation .....................................................................................................................12!
3.5!Firebox Installation ...............................................................................................................................12!
3.6!Power Cord Side Reversal...................................................................................................................12!
3.7!Surround Installation ............................................................................................................................13!
3.8!Installation in a Factory Built Fireplace ................................................................................................13!
3.9!Clearances to Combustibles ................................................................................................................14!
4!OPERATION INSTRUCTIONS ...................................................................................................................15!

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4.1!Fuel ......................................................................................................................................................15!
4.2!First Fires .............................................................................................................................................15!
4.3!Operating the Combustion Air Control ................................................................................................. 15!
4.4!Starting a Fire.......................................................................................................................................16!
4.5!Adding a New Load of Wood ...............................................................................................................17!
4.6!Blower Operation .................................................................................................................................17!
4.7!Barbecue Grill ......................................................................................................................................18!
5!TROUBLESHOOTING ................................................................................................................................19!
5.1!Backdraft / Smoking .............................................................................................................................19!
5.2!Over Firing ...........................................................................................................................................19!
6!MAINTENANCE ..........................................................................................................................................20!
6.1!Disposal of Ashes ................................................................................................................................20!
6.2!Chimney Maintenance .........................................................................................................................20!
6.3!Cleaning of Glass.................................................................................................................................21!
6.4!Replacement of Door Gasket............................................................................................................... 21!
6.5!Replacement of Glass.......................................................................................................................... 21!
6.6!Door Latch Lubrication .........................................................................................................................22!
6.7!Paint .....................................................................................................................................................22!
6.8!Removal of Firebox ..............................................................................................................................22!
6.9!Replacement Parts...............................................................................................................................23!
7!WARRANTY................................................................................................................................................ 24!

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WARRANTY REGISTRATION
Please register your SUPREME product online at http://www.supremem.com/registration.php
to ensure
full warranty coverage. Proof of purchase is required for all warranty claims.
1 SAFETY
SUPREME FIREPLACES INC. congratulates you on purchasing a FUSION 18 wood burning fireplace insert.
This insert complies with the ULC S628 and UL 1482 standards. In addition, this wood insert is certified to
comply with Phase II particulate emission standards from the US Environmental Protection Agency.
SAFETY NOTICE: Carefully read this manual before installation and operation of this insert. If not
properly installed, a house fire may result. To reduce the risk of a fire, follow the installation
instructions. Failure to follow instructions presented in this manual can lead to property damage,
bodily injury or even death. Alterations or modifications made on the unit or the installation is strictly
forbidden as it may predispose the user to hazardous risks. Contact your local building or fire officials
for restrictions and installation inspection requirements in your area and the need to obtain a permit.
WARNING: This unit is hot during operation; keep children, pets, flammable liquids, or combustible
materials at a safe distance. Ensure that all clearances to combustible materials are respected. Contact
with the unit during operation may cause severe harm. Install a safety screen to keep children and pets
away.
CAUTION:
•Do not connect this unit to a chimney flue serving another appliance.
•Do not connect to any air distribution duct or system.
•Never use chemicals to ignite the fire.
•Never burn waste or flammable fluids (such as gasoline, naphtha, or engine oil).
•Only burn dry natural cordwood.
•Never leave the unit unattended with the door open or unlatched.
•Only refuel this unit when the wood is reduced to embers.
•Always keep the door closed during operation.
•Do not operate this unit with a fireplace grate.
•Do not install an unvented gas log set into the firebox.
•Do not install this unit in a mobile home.
•Do not clean or service the unit while it is hot.
•Allow proper air flow by keeping the louvers/openings clear of any obtrusions.
Note: Failure to respect the above cautions may cause damages to the unit, damages to personal property,
bodily harm and will void the warranty. “
This wood heater needs periodic inspection and repair for proper
operation. It is against federal regulations to operate this wood heater in a manner inconsistent with
operating instructions in this manual.”

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2 COMPONENTS
2.1 Overall Dimensions
Figure 1: FUSION 18 Firebox
Figure 2: Dimensions of FUSION 18 Firebox
Figure 4: Dimensions of FUSION 18 with Circulating Chamber
Figure 3: Dimensions of FUSION 18

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Figure 5: Combustion Air Control Levers
2.2 Specifications
Appliance Type:
Adjustable Burn Rate Wood Heater – Non-Catalytic
Fuel Type:
Dry Cordwood
Maximum Log Length:
18 in (47 cm)
Burn Time1:
6 to 8 hrs
Firebox Volume:
1.85 ft3 (0.053 m3)
Heating Area:
500 to 1,800 ft2(45 to 170 m2)
Average Particulate Emissions Rate2:
1.90 gm/hr
Average CO Emissions Rate3:
103.6 g/hr
EPA Protocol:
Method 28R, ASTM2780-10, and ASTM2515-11
Efficiency (Crib Wood):
HHV4: 66.9% | LHV5:
Heat Output (Crib Wood):
10,958 to 22,421 BTU/hr (3,211 to 6,571 W)
Optimum Efficiency:
75%
Optimum Heat Output:
60,000 BTU (17.6 kWh)
Efficiency Protocol:
CSA B415.1-10
2.3 Combustion Air Control
The Combustion Air Control is a patented mechanism (Patent No: US 7,325,541 B2) that regulates the air flow
into the firebox based on the temperature of the unit. It is located on the top of the firebox, at the front center of
the unit (see Figure 5). The combustion air control of the FUSION 18 has two components: the Activator and
the Burn Rate Selector. The left combustion control lever is the Activator. When starting a fire or adding a new
load of wood, the Activator must be pushed in to allow a primary
source of air to enter the firebox. The Activator will retract automatically
with heat. The right combustion control lever is the Burn Rate Selector.
The Burn Rate Selector can slide sideways to achieve different burn
rates. When the Burn Rate Selector is positioned to the left, a
maximum burn rate is achieved and when it is positioned to the right, a
minimum burn rate is set. For optimum efficiency, it is recommended to
operate the unit with the Burn Rate Selector set at the low to
medium/low position.
WARNING: Never manipulate the Combustion Air Control with bare
hands as it gets hot when the FUSION is in operation. Use the Cold
Hand Key (see Section 2.4) to adjust the Combustion Air Control.
1Depending on combustion air control setting (see Section 4.3 for further details).
2Officially tested and certified by an independent.
3Note that rate is smaller for low to medium/low burn rates.
4Higher Heating Value.
5Lower Heating Value.

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2.4 Cold Hand Key
The Cold Hand Key (Figure 6) is an accessory that comes standard with
the FUSION 18 insert. The Cold Hand Key is a tool used to manipulate the
Combustion Air Control Levers when it is hot.
2.5 Chimney Sweeping Cap
The chimney sweeping cap (Figure 7) found at the baffle of the FUSION 18
allows easy access for chimney sweeping without having to remove any
components of the firebox.
WARNING: The chimney sweeping cap should be blocking the access to
the chimney at all times during combustion. A chimney sweeping cap that is
not blocking the baffle hole during combustion is a safety hazard, will
overheat the fireplace and void the warranty.
2.6 Door
The FUSION 18 wood burning insert comes with a Pyroceramic glass panel door. Pyroceramic is the highest
grade available for fireplaces and stoves and can withstand temperatures up to 1300oF. To remove the door,
open the door, lift it and pull it towards the bottom until the rod exits from the hinge holes.
NOTE: The door of the FUSION 18 must remain closed at all times during operation.
2.7 Removable Ash Lip
The Ash Lip (Figure 8) is a removable accessory that comes
standard with the FUSION 18 insert. It is installed on the door
holder (under the two small angled tags below the door) and
prevents ashes from falling onto the front of the hearth. The Ash
Lip can be installed with the door open or closed. It is safe to
operate the unit without the Ash Lip
2.8 Blowers
The FUSION 18 wood burning fireplace insert is equipped with two AC centrifugal compact fans on either side
of the surround (electrical rating: 115V, 60Hz, and 19W).
CAUTION: Make certain that the fireplace in not in operation and the blowers are unplugged before
accessing the electrical wiring.
Plug the power cord into an 115V grounded outlet for protection against a power surge. The blowers will turn
on and turn off automatically during the operation of the unit. As the temperature of the fireplace insert
increases and the heat activated sensor reaches 95°F, the fans will turn on. Note that the average time it takes
for the fans to activate is between 30 to 45 minutes after starting a fire. The fans will turn off once the fireplace
has cooled down and the heat activated sensor reaches 85°F. The speed of the fans can be adjusted with the
variable speed control mounted on the wall. It is safe to operate the FUSION 18 in the event of a power failure
(fans not powered).
Figure 6: Cold Hand Key
Figure 7: Chimney Sweeping Cap
Figure 8: Removable Ash Lip

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Figure 10: Circulating Chamber
Figure 12: Liner Adaptor
2.9 Surround
The FUSION 18 wood burning insert is available in three different sizes.
Figure 9: Surround Size Options - Small, Medium, and Large (Left to Right)
NOTE: SUPREME FIREPLACES INC. reserves the right to alter the dimensions of the surrounds without prior
notice.
2.10 Adjustable Circulating Chamber
The adjustable circulating chamber (patent pending: GB1305647.8) is a
standard component of the FUSION 18 insert (see Figure 10). It is designed
to prevent heat escaping from the existing chimney and allows for an
optimal flow and heat transfer. The width is adjustable from 28” to 32”, the
front height is adjustable from 21.75” to 26.75” (with the rear height fixed at
the minimum 21.75”), and the hole for the stainless steel liner is adjustable
by 2” (front to rear).
NOTE: The circulating chamber requires minimal adjustments. Please
refer to Section 3.4 for detailed instructions.
2.11 Adjustable Legs
The FUSION 18 insert is supplied with three adjustable legs (see Figure 11) in
the bottom of its firebox to allow adjustment of the height if the surround is not
flushed with the wall of the masonry fireplace.
2.12 Liner Adaptor
The FUSION 18 Liner Adaptor is a component that comes with the FUSION 18
and is required to connect a 5” stainless steel liner to the FUSION 18 insert.
2.13 Metal Tag
The Metal Tag is found on the front of the metal shipping crate and indicates that
alterations have been made to the masonry fireplace to accommodate the
FUSION 18 insert. The metal sheet having the Metal Tag is to be installed with
two screws at the Bottom of the Circulating Chamber. The Bottom of the
Circulating Chamber should have the side with the Metal Tag installed face up so
the Metal Tag is visible if the firebox were to be removed.
Figure 11: Adjustable Leg

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The Metal Tag reads as follows:
This fireplace has been altered to accommodate a fireplace insert and should be inspected by a qualified
person prior to re-use as a conventional fireplace.
Ce foyer a été modifié afin d'y insérer un foyer encastrable et doit être inspecté par une personne qualifiée
avant sa réutilisation comme foyer conventionnel.
2.14 Serial Number
The serial number of the unit is located at the bottom of the removable Ash Lip (refer to Section 2.7).

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3 INSTALLATION INSTRUCTIONS
The masonry fireplace is to be constructed in accordance to N.F.P.A. 211 (Latest Edition), Standards of
Chimney, Fireplaces, Vents and Solid-Fuel-Burning Appliances and Equipment. The FUSION 18 fireplace
insert is intended only for masonry fireplaces installed with a continuous chimney liner of 5 inch diameter
extending from the fireplace insert to the top of the chimney. This insert must be connected to a code-approved
masonry chimney or listed factory-built fireplace chimney with a direct flue connector into the first chimney liner
section. The chimney size should not be less than or more than three times greater than the cross-sectional
area of the flue collar. The chimney liner must conform to the Class 3 requirements of CAN/ULC-S635,
Standard for Lining Systems for Existing Masonry or Factory-Built Chimneys and Vents or CAN/ULC-S640,
Standard for Lining Systems for New Masonry Chimneys. Contact a local building inspector for information on
additional requirements and/or codes in your area.
CAUTION: Read these instructions carefully before starting the installation. Failure to follow these
instructions may result in property damage, bodily harm and even death. Modifications of the
instructions presented in this section without written authorization from SUPREME FIREPLACES INC.
will void the warranty.
Be sure that the fireplace and chimney are clean and in good
condition. Seal all cracks using stove cement. Seal permanently
any openings between the masonry of the fireplace and the
facing masonry. Remove or keep permanently open the existing
damper of the fireplace. If there is an accumulation of creosote in
the chimney or flue, it must be thoroughly cleaned. When
installing, operating and maintaining a solid fuel heater, respect
basic standards for fire safety.
WARNING: Do not remove bricks or mortar from the masonry fireplace.
Refer to Table 1, Figure 13 and Figure 14 for minimum opening dimensions of the masonry fireplace.
NOTE: The non-combustible hearth must extend a minimum of 20” (508mm) from the front and 8” (203mm) on
each side of the masonry fireplace opening and must be a minimum of 44” long.
Table 1: Minimum Opening Dimensions
Width (Front)
28’’ (711 mm)
Width (Back)
18’’ (457 mm)
Height
21.75’’ (553 mm)
Depth
19’’ (483 mm)
Figure 13: Minimum Opening Dimensions – Front View
Figure 14: Minimum Opening Dimensions – Side View

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3.1 Preparing the Firebox for Installation
a) Remove the door by opening it, lifting it, and pulling it towards the bottom until the rod exits from the
hinge holes.
b) Install the adjustable legs (see Section 2.10). The adjustable legs must extend 1 ¼inch from the
bottom of the firebox. NOTE: To avoid damages during shipping/handling, the adjustable legs
aren’t factory installed.
c) Push the chimney sweeping cap upwards and place it to the side (see Section 2.4).
3.2 Liner Installation
a) Determine the required length of liner by measuring the bottom of the hearth to the top of the existing
chimney. NOTE: Additional length of the liner is needed for proper installation of the flashing and
chimney cap. WARNING: The minimum and maximum height of the liner is 15’ and 35’
respectively.
b) Slide the stainless steel liner down the existing chimney.
c) Lower the liner 24 inches from the hearth.
d) Fill the space between the liner and the baffle of the existing chimney with Stone Wool insulation to
prevent heat from escaping.
3.3 Adjustable Circulating Chamber
3.3.1 Assembly
i. Remove the front cover of the unit and cut along
the perforated lines to later use as the bottom
cover within the masonry fireplace (Figure 16).
ii. Secure the bottom cover to the back wall of the
circulating chamber and bend inwards the metal
brackets at the front bottom.
CAUTION: Ensure that the text on the Metal Tag (Section 2.13) is facing upwards before
installing the bottom cover.
3.3.2 Installation
i. Measure the width of the existing fireplace.
ii. Extend the width of the Circulating Chamber (Section 2.10) to
the width of the existing fireplace and fasten with the wing nuts
provided.
iii. Loosen the wing nuts of the adjustable liner hole.
iv. Position the circulating chamber into the existing masonry
fireplace.
v. Lower the liner through the adjustable liner hole of the
circulating chamber.
vi. Adjust the front height of the circulating chamber to the height
of the existing masonry fireplace and secure the wing nuts.
vii. Adjust the position of the circulating chamber in order to have a distance of 10.5 inches from the
face of the liner to the face of the existing fireplace.
viii. Tighten the wing nuts of the adjustable liner hole.!
NOTE: If the width and/or the height of the existing fireplace is larger than the maximal width
and/or height of the adjustable circulating chamber, extend the width and/or height of the
circulating chamber to the maximum and fill the space with Stone Wool.
Figure 15: Circulating Chamber Front Cover
Figure 16: Circulating Chamber Assembly

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3.4 Liner Adaptor Installation
Insert the 5” diameter liner adaptor (Section 2.12) at the end of the
liner. The liner must be flush with the inferior rim of the adaptor.
a) Tighten the clamp to secure the liner with the liner adaptor.
b) Secure the liner adaptor in place with the sheet metal screw
provided.
3.5 Firebox Installation
a) Slide the FUSION 18 firebox into the circulating chamber.
b) Align the liner adaptor with the flue of the insert.
c) Insert your hand in the chimney sweeping cap opening and
pull the liner down by its handle.
d) Use your thumb to bend the 4 tabs of the liner adaptor
outward to secure the liner in place.
e) Reposition the chimney sweeping cap back in the
chimney sweeping cap hole of the baffle (refer to Figure
17).
WARNING: The chimney sweeping cap should be blocking
the access to the chimney at all times during combustion.
A chimney sweeping cap that is not blocking the baffle
hole during combustion is a safety hazard, will overheat
the fireplace and void the warranty.
3.6 Power Cord Side Reversal
The blowers of the FUSION 18 insert are factory installed and
the power cord is located at the left side of the surround when
facing it (refer to Figure 18). However, the power cord location
can be switched to the right side by following the below
instructions:
a) Unfold the cover that secures the power cord in place.
b) Loosen the nut of the strain relief.
c) Bring the power cord to the opposite side and secure the
strain relief by tightening the nut.
d) Bend the cover to its original position.
Figure 17: Liner Adaptor Installation
Figure 19: FUSION 18 Installation
Figure 18: Location of Electric Wiring

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3.7 Surround Installation
a) Install the surround and secure it with four screws, two on either side.
b) Install the door by inserting the upper rod into the upper hole and then lowering the lower rod into the
lower hole.
c) Inspect the installation. If the surround is not flush against the wall, level the firebox by using the
adjustable legs.
3.8 Installation in a Factory Built Fireplace
The FUSION 18 insert is certified to be installed into a factory built fireplace under the following requirements:
a) The factory built fireplace must be in good working condition (no damages and no defects) and must be
certified under UL 127 or ULC S610 (Canada) standards.
b) The insert must be installed with a full length stainless steel liner (flexible or rigid) that meets 2100°F or
1149°C HT requirements in UL 1777 or ULC S635 (Canada). The liner must be properly installed to the
flue collar and the chimney top.
c) Block any opening to the damper area to prevent room air entering the chimney cavity.!
d) The installation of the FUSION 18 must not block any existing air intake/outtake (louvers, fresh air
intakes, and warm air outlets).
e) It is not permitted to alter the fireplace in any manner apart for the following exceptions:
•Decorative trims or any similar components that would not affect the performance of the
fireplace.
•Removal of the chimney damper.
f) A permanent warning label in metal must be fastened inside the firebox of the factory built fireplace
stating that the fireplace can only be used with the FUSION 18 insert unless it has been restored to its
original condition.
Figure 20: Electric Wiring Diagram

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Table 2: Clearances to Combustibles
3.9 Clearances to Combustibles
Refer to Figure 21 and Table 2 for the minimum clearance to combustibles:
Note that the non-combustible hearth must extend a minimum of 20” (508mm) from the front and 8” (203mm)
on each side of the masonry fireplace opening. WARNING: Keep a minimum distance of 5’ (152cm) from
the unit to any combustible material (such as firewood, furniture, and drapes) as a fire hazard
precaution.
The depth of the mantle is measured from the face of the fireplace door. When the non-combustible wall is
recessed, the depth of the mantle can be increased by the amount of the recess. Note that a mantel cannot
be installed below the minimum clearance of 36.75” (from the bottom of the mantel to the base of the
unit).
The depth of the mantle is measured from the face of the
fireplace door. When the non-combustible wall is recessed,
the depth of the mantle can be increased by the amount of
the recess. Note that a mantel cannot be installed
below the minimum clearance of 36.75” (from the
bottom of the mantel to the base of the unit).
Sidewall from outer edge of
fuel door
15.5” (394mm)
Side trim from outer edge of
fuel door
7.5” (190.5mm)
Top trim from top edge of
fuel door
13.75” (349mm)
Protruding mantel (8”) from
floor
36.75” (933mm)
Protruding mantel (8”) from
top edge of fuel door
18.5” (470mm)
Maximum
Mantle Depth
Distance from the Base of
the FUSION 18 to the Bottom
of the Mantle
8” (203 mm)
36.75” (933.45 mm)
10” (254 mm)
41.25” (1048 mm)
12” (305 mm)
46” (1168 mm)
Table 3: Depth of Mantle with Respect to Distance of Base
Figure 21: Clearance to Combustibles

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4 OPERATION INSTRUCTIONS
4.1 Fuel
The FUSION 18 is designed to burn natural wood only. Higher efficiencies and lower emissions generally
result when burning air dried seasoned hardwoods (moisture content below 20%), as compared to softwoods
or to green or freshly cut hardwoods. The following are a few signs indicating that firewood is sufficiently dry for
use: (a) cracks on the ends and surface of the logs, (b) lighter in weight, and (c) color (yellow/grey). It is
recommended to use a moisture meter with pin sensors for determining accurately the moisture content of
firewood (read manufacturer’s instruction manual before operating). The optimum log length is 16-18 inches,
preferably split in halves or quarters and left to dry under a cover or away from external elements for a
minimum of one year prior to use. Use good quality dry cordwood only. DO NOT burn garbage, lawn clipping,
yard waste, materials containing rubber (including tires), materials containing plastic, waste petroleum
products, paints, paint thinners, asphalt products, materials containing asbestos, construction debris,
demolition debris, railroad ties, pressure-treated wood, manure, animal remains, coal, salt water driftwood or
other previously salt water saturated materials, unseasoned wood, paper products, cardboard, plywood,
particle boards, or other foreign materials in this product. The prohibition against burning these materials does
not prohibit the use of fire starters made from paper, cardboard, saw dust, wax and similar substances for the
purpose of starting a fire in an affected wood heater. Burning these materials may result in release of toxic
fumes or render the heater ineffective and cause smoke. Do not over fire the FUSION 18 fireplace insert. Over
firing will damage the fireplace, is hazardous and will void the warranty. NOTE: Gas logs cannot be installed in
the FUSION 18 fireplace insert.
WARNING: Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar
liquids to start or “freshen up” a fire in this unit. Keep all such liquids well away from the fireplace
insert while it is in use.
Ecological or compressed logs containing chemical additives are not tested and approved to be used with the
FUSION 18. Using them will overheat and damage the fireplace and void the warranty. Ecological or
compressed logs that are 100% wood and contain no other additives can be safely used in the FUSION 18.
Never use more than three of these logs at a time. Using more is not only dangerous, but will damage the
fireplace and void the warranty. Follow the ecological log manufacturer’s safety guidelines and
recommendations and be sure that they are intended for use in fireplaces. Reload only once the previous load
of wood has been consumed and only embers remain.
WARNING: Do not keep the door open while the fireplace is in operation.
4.2 First Fires
For the first 3 fires, burn a maximum of 3 logs at the medium to low burn rate (refer to Section 4.3) to allow for
proper conditioning of the unit. Due to oil residues and the curing of the paint of the fireplace, it is normal to
smell an odor for the first fires of the FUSION 18. Open a window or a door near the fireplace insert to ventilate
the house during the first fires. Oil residues may cause light smoking.
4.3 Operating the Combustion Air Control
The burn rate and the heat output are related to the amount of air entering into the firebox. The combustion air
control of the FUSION 18 has two components: the Activator and the Burn Rate Selector. When starting the
fire or when adding a new charge of wood, the fireplace needs additional air in order to establish a good fire.
When the wood starts to burn properly, the amount of air can be reduced depending on the heating
requirements.

16
The left combustion control lever is the Activator. When starting a fire or adding a new load of wood, the
Activator must be pushed in to allow maximum air to enter the firebox. The right combustion control lever is the
Burn Rate Selector. The Burn Rate Selector can slide sideways to achieve different burn rates. When the Burn
Rate Selector is positioned to the left, a maximum burn rate is achieved and when it is positioned to the right, a
minimum burn rate is set. Keeping the Burn Rate Selector to the right will burn the wood slower. Keeping the
Burn Rate Selector to the left will provide a stronger fire and keep the glass of the fireplace cleaner for longer.
Adjust the burn rate according to your heating requiremments and the quality of your wood. The combustion air
control will automatically and gradually close the primary air source to the selected burn rate setting (right
lever) with the presence of heat to maximize the burn time.
NOTE: The Burn Rate Selector can remain at the same setting at all times if the burn rate is satisfactory.
However, the Activator must be pushed in when starting a fire or when adding a new load of wood.
WARNING: The combustion air openings should never be obstructed.
WARNING: Never manipulate the Combustion Air Control with bare hands as it gets hot when the
FUSION 18 is in operation. Use the Cold Hand Key to adjust the Combustion Air Control.
WARNING: This wood heater has a manufacturer-set minimum low burn rate that must not be altered. It
is against federal regulations to alter this setting or otherwise operate this wood heater in a manner
inconsistent with operating instructions in this manual.
4.4 Starting a Fire
The FUSION 18 has patented technologies and innovative features that make
starting a fire quick and easy. Before starting a fire, assure that all the safety
precautions mentioned in the owner’s manual are being respected. The following
instructions describe starting a fire in FUSION 18 fireplace using a “top-down”
approach, which results in a cleaner, more efficient, and longer burn:
a) Place two logs in the firebox. The logs should sit directly on the hearth. Do
not use a fireplace grate.
b) Place a third log at angle above the two logs of step a).
c) Place a fourth log above the logs of step a) and step b) (tilted upwards),
which will result in a “pocket” at the center of the firebox.
d) Push the left combustion control lever (the Activator) inwards.
e) Slide the right combustion control lever (the Burn Rate Selector) to the
desired burn rate. Positioning the Burn Rate Selector towards the left is for
maximum burn rate and towards the right is for minimum burn rate.
f) Place and ignite a firestarter within the “pocket”. Make sure that the
firestarter is visible from the opening (facing the front) and directly below
the logs of step b) and step c).
g) Once the firestarter is well lit, close the door. Do not leave the door open
for more than 2 minutes.
CAUTION: The wood should be placed away from the door to avoid damage
to the glass.
WARNINGS: Over firing the unit may result in overheating and can damage the fireplace and/or result
in fire hazards. The maximum firewood load must not exceed 4 medium sized logs (approximately 25
pounds). This fireplace has been designed to burn with the door closed. When the fireplace is being
used, the door should remain closed at all times. Failing to do so is a safety hazard, will damage the
fireplace and void the warranty.
Figure 22: Non-recommended
Wood Configuration
Figure 23: Recommended Wood
Configuration

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WARNING: Do not use fire accelerants to rekindle the fire if the first attempt to start the fire failed. Do
not open the door. Simply reactivate the Activator by pushing it inwards.
NOTE: Sufficient air exchange is necessary for the fireplace to operate properly. Air is required in order to
maintain the combustion of the fireplace. If the house is airtight, the fireplace may not function properly. If the
fireplace is deprived of air, it will be necessary to provide a source of fresh air into the dwelling. This may be
done by using an air exchanger unit or simply by opening a window or a door near the fireplace partially for a
few minutes. Make sure that other equipment such as the kitchen exhaust fans or oil central heating systems
does not affect the fireplace functionality. Large return ducts of central heating systems located in the same
room as the fireplace may affect the proper functioning of the unit and may cause smoking.
4.5 Adding a New Load of Wood
WARNING: Open the door to reload only when the wood has been reduced to embers, otherwise there is a
risk of smoke infiltration into the house.
When the wood has been reduced to embers and there’s no visible flame, you may add a new load.
a) Crack the FUSION 18 door open and wait a few moments before opening the door completely.
b) Use your fireplace tools to gather the remaining embers at the center of the firebox.
c) Activate the Activator by pushing it in.
d) Once the embers begin to glow red, add the new load of wood in the firebox.
e) Keep the door of the FUSION 18 slightly unlatched until you see a flame in the firebox. Never leave the
FUSION 18 door unlatched without constant supervision.
f) Completely latch the FUSION 18 door.
Assure that a flame is maintained. Avoid wood smoldering on top of embers as this will result in a dirty glass,
excessive emissions, chimney creosote buildup and poor heat output. If wood is smoldering, ensure the
Activator has been activated and unlatch the door slightly with supervision until a flame has been maintained.
4.6 Blower Operation
A blower kit is preinstalled in the FUSION 18 fireplace insert. It includes two blowers mounted at the bottom on
either side of the firebox and a heat sensory thermodisk. An optional variable speed control can be installed to
adjust the speed of the fans. Do not install a substitute kit as this may result in overheating and risk of fire.
a) Connect the speed control to an 115V properly grounded outlet that accepts three-pronged plugs.
WARNING: Do not remove the grounding prong from the speed control.
b) Plug the power cord to the speed control.
c) Turn the speed control knob to the right until it clicks. The fans will start and stop automatically in the
presence and absence of heat respectively.
NOTE: Standard location of the power cord is on the left when facing the surround, but can be switched to the
opposite side. Please see Section 3.6 for instructions on how to reverse the location of the power cord.
CAUTION: Do not route the power cord under the unit, on hot surfaces, and on sharp edges.
Once the power cord has been plugged to the nearest 115V outlet, the fans will turn on and turn off
automatically. When the insert gets hot and the thermodisk reaches 95°F, the fans will turn on. The average
time it takes for the fans to activate is 30 to 45 minutes after starting a fire as explained in this manual (Section
4.4). The fans will turn off once the insert has cooled down and the thermodisk reaches 85°F. The speed of the
fans can be adjusted with the optional variable speed control.

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Useful Tips and Recommendations:
•
Schedule cooking in the FUSION 18; approximately 4 to 6 hours is needed before an ideal bed of
embers is produced from the load.
•Cook with indirect heat (convection); move the coals along the walls of the firebox.
•Keep the door closed while cooking.
•
Use the left handle of the Combustion Air Control, the Activator, (Section 2.3) to regulate the
temperature of the unit while cooking. To avoid flare-ups, slide the Burn Rate Selector to the right
(minimum setting) and pull the activator towards you if it hasn’t already been retracted.
•Cook fish on a cedar plank.
•Greasy food may cause smoking.
4.7 Barbecue Grill
The FUSION 18 insert comes with a removable swiveling barbecue grill. When operating the FUSION 18, the
barbecue grill should be leaning against the rear wall of the firebox, in the upright position. The grill swivels to
the horizontal position above the bed of embers for cooking purposes. The barbecue grill is removable by lifting
the hinge and pulling forward.
Do not use the FUSION 18 insert as a primary cooking appliance. This feature is designed for occasional
grilling during the winter and cooking during power failures. Foods that are commonly grilled in a conventional
barbecue can be cooked in the FUSION 18 insert. The intense heat from the next combustion cycle cleans the
grill and the unit of any cooking residue.
DISCLAIMER: SUPREME FIREPLACES INC. is not responsible for the quality nor the outcome of the food
cooked in the FUSION 18.

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Guideline to avoid over firing:
•Always keep the door closed during operation.
•Inspect regularly the door gasket/glass and replace accordingly.
•Always operate the unit with the chimney sweeping cap in position, blocking
the hole in the baffle.
•Never load more than 25 lbs of wood at a time.
•Ensure that there is no excess draft.
5 TROUBLESHOOTING
5.1 Backdraft / Smoking
Draft is the force created by a difference in pressure, which moves air from the appliance up through the
chimney. It is important to operate the FUSION 18 with proper draft to ensure optimal performance of the unit.
Draft is depended on the length of the chimney, local geography, nearby obstructions and other factors. Proper
draft results in an upwards flow through chimney, which prevents smoke infiltrating into the house during
operation of the unit. As the temperature of the unit and chimney rises during combustion, the draft
consequently increases due to a higher difference in pressure.
In contrast, backdraft is air flow from the chimney into the house, which results in smoke infiltration from the
appliance and/or the chimney joints during operation. The unit is experiencing backdraft if air is flowing out
from the exhaust of the baffle system (within the firebox). Backdraft is most commonly caused by fans around
the house (such as in the kitchen and bathrooms) simultaneously in operation, insufficient length of the
chimney (less than 15 feet), inadequate ventilation, or a blocked chimney. Refer to the following suggestions to
eliminate backdraft:
•Close any fans operating around the house (specifically for the duration of ignition).
•Clean the chimney of any obtrusions (when the unit is cold).
•Open one window or one door near the FUSION 18.
•Heat the chimney by burning newspaper near the exhaust of the baffle system.
5.2 Over Firing
The appearance of a red glow on the exterior of the firebox (top and sides) and/or on the flue is a sign of over
firing. Excess air entering the firebox, over fueling, or an abnormal strong draft causes the unit to reach drastic
temperatures from an uncontrollable combustion. Over firing is a safety hazard and may result in permanent
damage to the unit. In the occurrence of over firing:
a) Make sure the FUSION 18 door is properly closed.
b) Manually close the Combustion Air Control by pulling the Activator (left lever).
c) Turn on the blower to the maximum speed. The red glow on the exterior of the firebox and/or the
flexible liner should gradually disappear.
WARNING: Do not touch hot surfaces with bare hands. Always wear heat protecting gloves and use
fireplace tools.
WARNING: Failure to follow the above guideline will void the warranty. Over firing is a safety hazard,
can cause irreversible damages to the FUSION 18 and will void the warranty.

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6 MAINTENANCE
6.1 Disposal of Ashes
Ashes should be placed in a metal container with a tight fitting lid. The closed container of ashes should be
placed on a non-combustible floor or on the ground, well away from all combustible materials, pending final
disposal. If the ashes are disposed of by burial on soil or otherwise locally dispersed, they should be retained
in the closed container until all cinders have been thoroughly cooled. CAUTION: Always wear heat resistant
gloves when removing the ashes from the firebox.
a) Let the firebox cool to ambient temperature before removing the ashes. It is recommended to remove
the ashes once the bed has exceeded a height of 4 inches.
b) Slowly open the door to prevent ashes from coming into the room.
c) Place an ash bucket (metal container) near the fireplace, onto the non-combustible hearth.
d) Using a shovel and brush, remove the bulk of the ashes from the firebox into the ash bucket. Note that
it is not necessary to keep a thin bed of ashes for the next fire.
e) Store the ash bucket (with the tight-fitting lid) on a non-combustible surface, away from any combustible
materials, pending final disposal.
6.2 Chimney Maintenance
Creosote – Formation and Need for Removal: When wood is burned slowly, it produces tar and other
organic vapors, which combine with expelled moisture to form creosote. The creosote vapor condenses 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 burning wood or
coal should be inspected at least once every two months during the heating season to determine if creosote
buildup has occurred. Note that continuously operating the unit with green or wet wood will result in premature
creosote buildup. Never use chemical cleaners for your chimney.
WARNING: In the case of a chimney fire: 1) close the door of the fireplace; 2) set the burn rate of the
Combustion Air Control to minimum (Section 4.3); 3)call the local fire department (if assistance is
needed); 4) use a dry chemical fire extinguisher (baking soda or sand) to control the fire.
CAUTION: Never use water to extinguish a fire as it may result to dangerous steam explosions. Do not
use the unit until the chimney is inspected and repaired (if needed) by a qualified technician.
NOTE: Do not clean the chimney when the unit is in operation/hot. Follow the instructions below for sweeping
the chimney of a FUSION 18 fireplace insert:
a) Open the door of the unit.
b) From within the firebox, displace the chimney sweeping cap located in the baffle by lifting and moving it
to the side.
c) Close the door of the unit.
d) Using an appropriate sized chimney sweeping brush, clean the chimney from any creosote buildup and
other residues.
e) Remove all the fallen/loose creosote/residues from the firebox and baffle system (a shop vacuum
cleaner can be used for a thorough cleaning).
f) Place back the chimney sweeping cap.
CAUTION: Operating the unit without the chimney sweeping cap in position will result in over firing
and void the warranty.