SUPREME DUET User manual

DUET SUPREME FIREPLACES
2Revised October 21st, 2015
TABLE OF CONTENTS
1. SAFETY GUI DELI NES FOR YOUR DUET
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3
2. OPERATING I NSTRUCTI ONS
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4
2.1 Fuel
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2.2 First Fires
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2.3 The Combustion Air Control
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2.3.1 Operating the Combustion Air Control
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2.4 Starting a Fire
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2.5 Adding a New Load of Wood
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2.6 Smoking
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2.7 Built-in Barbecue
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3. M AI NTENANCE OF THE DUET
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7
3.1 Creosote ±Formation and Need for Removal
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7
3.2 Chimney M aintenance
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7
3.3 Chimney Sweeping Cap
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7
3.4 Paint
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8
3.5 Disposal of Ashes
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8
3.6 GlassCleaning
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8
3.7 GlassReplacement
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3.8 Gasket Replacement
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9
3.9 Latch Lubrication
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10
4. INSTALLATION INSTRUCTI ONS
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10
4.1 Location of the Duet
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10
4.2 Installation Configurations
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11
4.2.1 4 SeasonsInstallation
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13
4.2.2 Framing
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14
4.3 Gravity Kit I nstallation
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15
4.4 The Hearth Extension
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4.5 Clearancesto Combustibles
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4.6 BlowersKit I nstallation
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4.7 Chimney Installation
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4.7.1 General Rules
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4.7.2 Reference Table of Listed UL 103/ULC S629 Chimneys
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4.7.3 Chimney I nstallation Instructions
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4.7.4 Typical Chimney I nstallations
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4.7.5 Offset Installation
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4.7.6 Angled Wall Radiation Shield
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4.7.7 Connection to a Masonry Chimney
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20
5. OPTI ONS
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5.1 Fresh Air Kit
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5.2 Removable Ash Lip
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5.2 Hot Air System
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6. REPLACEM ENT PARTS
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7. LABELS
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8. WARRANTY
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DUET SUPREME FIREPLACES
3Revised October 21st, 2015
1. SAFETY GUI DELI NES FOR YOUR DUET
xCarefully read these instructions before installing and using the fireplace.
xThe Duet is a high efficient fireplace and gets very hot when in use. Contact with the fireplace can cause
severe harm. Install a safety screen to keep children and pets out of reach.
xNever leave children or pets unattended while the fireplace is hot.
xDo not operate the fireplace with the door open. Leaving the door open will overheat and damage the
fireplace and void the warranty.
xOpen the door to reload only when the wood has been reduced to embers, otherwise there is a risk of smoke
infiltration into the house and overheating the fireplace.
xOnly burn dry wood in the Duet fireplace. Do not burn treated wood, construction scraps, coal, garbage,
plastic or metal. Burning anything other than dry natural wood will damage your fireplace and void the
warranty.
xNever use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to start or
³IUHVKHQXS´ a fire in this fireplace. Keep all such liquids well away from the fireplace while it is in use.
xDo not use a fireplace grate.
xDo not alter or substitute any components of the fireplace. Changes made to the design of the fireplace will
void the warranty and can be hazardous.
xA s this fireplace is only intended for burning wood, do not install an unvented gas log set into the structure.
xThis fireplace is not intended for use in mobile homes.
xInstall the Duet only as described in this manual of installation.
xCleaning products may damage the paint or plating of the fireplace.
xDo not do any maintenance to your fireplace while it is still hot.
xDo not obstruct the air flow of the louvers and grills of the fireplace.
xDo not use a fireplace insert or other products not specified for use with this fireplace.
xConsult authority having jurisdiction (such as the fire department, the municipal building department, the fire
prevention bureau) to determine the need to obtain a permit before installation.
xSmoke detectors must be installed at least 15 feet away from the fireplace as to not be triggered by accidental
fireplace smoking.
xWhen performing renovation work around the fireplace, always ensure that the minimum clearances to
combustible materials are respected.
xBurning charcoal (if charcoal is used for the barbeque feature) may produce carbon monoxide. Be sure to
have proper ventilation to avoid carbon monoxide poisoning.
Please register your SUPREME product online at http://www.supremem.com/registration.php to
ensure full warranty coverage. Proof of purchase isrequired for all warranty claims.

DUET SUPREME FIREPLACES
4Revised October 21st, 2015
Figure 1 - Combustion Air Control
2. OPERATING INSTRUCTI ONS
:$51,1* 5($' 7+( 2:1(5¶6 0$18$/ &$5()8//< 5HDG WKH IROORZLQJ EULHI LQVWUXFWLRQs before using
your fireplace.
The Duet is not intended to serve as a primary source of heat. A primary source of heat must be available in the home that
the Duet is installed in. Supreme is not responsible for heating costs related to other sources of heat.
2.1 Fuel
The Duet is designed to burn dry, natural, seasoned wood having a moisture content below 20%. The optimum log length is
16-18 inches, preferably split in halves or quarters and left to dry under a cover or away from the elements for a minimum
of one year prior to use.
Use good quality dry cordwood only. DO NOT burn coal, construction lumber, twigs, sawdust, plastic, garbage or other
foreign materials in your fireplace. Gas logs cannot be used with the Duet. Use solid wood fuel only. Do not burn paper,
newspaper, cardboard, pine tree branches or construction materials.
Do not over fire the Duet. Over firing will damage the fireplace, is hazardous and will void the warranty.
WARNI NG: Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to start
RU³IUHVKHQXS´ a fire in thisfireplace. Keep all such liquidswell away fr om the fireplace while it isin use.
Ecological or compressed logs containing chemical additives are not tested and approved to be used with the Duet. 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 Duet. 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 manufacturHU¶VVDIHW\
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 a small flame remains.
WARNI NG: Do not keep the door open while the fireplace islit.
2.2 First Fires
Due to oil residues and the curing of the paint of the fireplace, an odor can be smelled during the first 2 to 3 fires of the
Duet. Open a window or a door near the fireplace to ventilate the house during the first fire.
2.3 The Combustion Air Control
The burn rate and the heat output are related to the
amount of combustion air. The combustion air
control of the Duet has two components: the Easy-
Light and the Burn Rate Selector (see figure 1).
2.2.1 Operating the Combustion Air Control
W hen starting the fire or when adding a new charge
of wood, the fireplace needs additional air in order
to establish a good fire. W hen the wood starts to
burn properly, the amount of air can be reduced
depending on the heating requirements.
The left combustion control lever is the Easy-Light mechanism
(see figure 1). W hen starting a fire or adding a new load of wood, the Easy-Light must be pushed in to allow a primary
source of air to enter the firebox.

DUET SUPREME FIREPLACES
5Revised October 21st, 2015
Figure 3 - Recommended
Figure 2 ±Not Recommended
The right combustion control lever is the Burn Rate Selector (see figure 1). The Burn Rate Selector can slide sideways to
achieve different burn rates. W hen 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. A djust the burn trate according to your heating
requiremments and the quality of your wood.
The combustion air control will automatically and gradually close the primary air source with the presence of heat to
maximize the burn time.
WARNI NG: The combustion air openi ngsshould never be obstr ucted.
2.4 Starting a Fire
Assure that all the safety SUHFDXWLRQV PHQWLRQHG LQ WKH RZQHU¶V PDQXDO DUH EHLQJ
respected.
1. Place two logs in the firebox. The logs should sit directly on the hearth.
Maintain approximately a one inch gap between the logs. This will facilitate
the Easy-Light airflow. Do not use a fireplace grate.
2. Add afirestarter on top of the two logs.
3. Add two more logs on top of firestarter and first set of logs. A log should be
positioned directly above the firestarter, but with a one to two inch gap (see
figure 3).
4. Push the left combustion control lever (the Easy-Light) inwards.
5. 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.
6. Light the firestarter.
7. 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 doors to avoid damage to the glass.
WARNI NGS: 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 30 pounds). Open the door to reload only when
the wood hasbeen reduced to charcoal, otherwise there isa risk of smoke infiltration
into the house.
This fireplace has been designed to burn with the doors closed. W hen the fireplace is being
used, the doors should remain closed at all times. Failing to do so is a safety hazard, will
damage the fireplace and void the warranty.
NOTE: Always place the wood at the center of the firebox. Keep the bottom logs apart in such a way that at least one slot
of the ashtray grate is not obstructed. The Easy-Light air flows through the grate slots.
WARNING: Do not use fire accelerantsto rekindle the fire if the first attempt to start the fire failed. Do not open the
door . Simply reactivate the Easy-Light by pushing it inwards.
NOTE: Sufficient air exchange is necessary for the fireplace to operate properly. A ir 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 do not affect the fireplace functionality. Large return ducts of
central heating systems located in the same room as the fireplace is installed may affect the proper functioning of the
fireplace and may cause smoking.

DUET SUPREME FIREPLACES
6Revised October 21st, 2015
2.5 Adding a New Load of Wood
W hen the wood has been reduced to embers, add a new load.
1. Open the fireplace door and use your fireplace tools to gather the remaining embers at the center of the firebox.
2. Close the door and activate the Easy-Light. W ait 2-3 minutes for the embers to be activated.
3. Open the fireplace door slowly and add 2-3 logs. Space the bottom logs 1-2 inches apart to allow the flame to move
upwards.
4. Close the fireplace door.
Note: It isimportant to assure that a flame is maintained. If the flame isnot maintained, reactivate the Easy-Light.
2.6 Smoking
Fireplace smoking can occur for a number of reasons: a negative pressure in your home, simultaneous use of other fans
(such as a kitchen exhaust fan), wood having a high moisture content, a chimney that is below 15 feet long, a dirty chimney.
Before starting a fire, if you feel a cold draft in the firebox (called a downdraft) you will likely experience smoking. Have
your chimney swept at least once a year and inspected at least twice a year.
If you experience a downdraft, follow the following procedure to light the fireplace:
1. Load the fireplace as described in section 2.4.
2. Activate the Easy-Light by pushing it inward.
3. Place 3 sheets of cramped newspaper on top of the wood.
4. Open a door or a window near the fireplace.
5. Open the fireplace door and ignite the firestarter. Ignite the newspaper in several locations. Keep the fireplace door
fully opened. A small amount of smoke will leak in to the house. The intense flame of the newspaper should
reverse the draft and a fire will start.
6. Close the fireplace door.
7. Close the door or window near the fireplace.
2.7 Built-in Barbecue
WARNI NG: Alwayswear glovesto avoid burnsand injuries.
To use the barbecue feature of the Duet, lower the barbecue grills and place the food on it. The doors should remain closed
while cooking. W hen you are done barbecuing, raise both barbecue grills against the sides of the firebox. No cleaning is
required.
Useful Tips:
xPlan ahead of time. Y ou will need between 4 to
6 hours after your last load of wood to have
sufficient remaining coals to barbecue.
xCook with indirect heat. Move the coals away
from the middle of the hearth to the sides of the
firebox.
xKeep the doors closed.
xExperiment with different heat intensity. Start
with a lower heat intensity to avoid burning
your food. The temperature inside the firebox is
much higher than what may be deemed.
xIn most cases, you will not have to flip the food that you are barbecuing. The radiant heat from the stainless steel
firebox generally cooks food evenly on both sides.
xFish cooks very well on a cedar plank.
xChicken roasts very well using a chicken roast accessory (available at most local department stores).
xTo avoid flare-ups, close the primary air by pulling the Easy-Light handle towards you.
Smoking may occur when cooking greasier foods.
Figure 4 ±Barbecue Grill and Smoke Shelf

DUET SUPREME FIREPLACES
7Revised October 21st, 2015
Frequently Asked QuestionsRegarding the Barbecue Feature of the Duet:
What can you cook?
Y ou can barbecue anything that you normally would with a regular outdoor grill. In addition, you can bake foods in the
Duet that you usually would with your oven, such as pizza.
Can I use charcoal to barbecue?
Y es, you can. Y ou can also add charcoal if you are cooking for a prolonged amount time.
How often can I usethebarbecuefeatureof the Duet?
7KHEDUEHFXHVKRXOGQ¶WEHXVHGPRUHWKDQWKUHHWLPHVDZHHNDQGLVQRWLQWHQGHGWREHXVHGDVDSULPDU\FRRNLQJDSSOLDQFH
WARNI NG: Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter fluid, or similar liquids to rekindle
the charcoal. These products may result in serious accidents or fires. Keep all such liquids well away from the fireplace
while it is in use. If you need to rekindle the charcoal, gather the coals at the center of firebox, close the door and activate
the Easy-Light by pushing it inward. W ait a few minutes for the coals to catch and close the Easy-Light by pulling it
towards you.
If you wish to start a fire after barbecuing, you may do so by concentrating the remaining coals at the center of the firebox,
add two to three logs on top of the charcoal, close the door and activate the Easy-Light by pushing it inwards. The fire will
start without further intervention.
DISCLAIMER: SUPREME FIREPLACES INC. is not responsible for the quality nor the outcome of the food barbecued in
the Duet.
Note: W e invite you to share your barbecue experience with other users by visiting our website at www.supremem.com.
3. MAI NTENANCE
3.1 Creosote ±Formation and Need for Removal
W hen wood is burned slowly, it produces tar and other organic vapors that when combined with expelled moisture forms
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. W hen ignited, this creosote makes an extremely hot fire.
The chimney shall be inspected at least twice a year during the heating season to determine when creosote build-up has
occurred.
W hen creosote has accumulated it shall be removed to reduce the risk of a chimney fire.
3.2 Chimney Maintenance
Have a certified technician regularly inspect your chimney and fireplace. The chimney should be swept at least once a year.
Do not use chemical cleaners to clean your chimney. Burning dry, seasoned wood will reduce creosote accumulation.
3.3 Chimney Sweeping Cap
The chimney sweeping cap found at the baffle of the Duet allows easy access for chimney sweeping without having to
remove any components of the firebox. (see figure 5).
To sweep the chimney:
1. Open the fireplace door.
2. Push the chimney sweeping cap upwards and place it on the side.
3. Close the fireplace door.
4. Sweep the chimney.
5. Open the door of the fireplace and empty out all the residues.
6. Place back the chimney sweeping cap.
Figure 5 ±The Chimney Sweeping Cap

DUET SUPREME FIREPLACES
8Revised October 21st, 2015
Figure 6 ±Ashtray
Note: The chimney sweeping cap is sealed with silicone for transport. A fter the first fire, the silicone will burn and you will
be able to move the cap.
WARNI NG: 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.
3.4 Paint
The faces of the Duet could be touched up using Stove Bright high temperature paint in Metallic Black for black fireplaces
and Charcoal for charcoal colored fireplaces. Follow the Stove Bright instructions on the can for directions and safety
recommendations. Do not do any paint touch ups while the fireplace is hot.
3.5 Disposal of Ashes
Warning: Alwayswear protective gloveswhen empting the ashesto avoid bur ns.
Regularly empty out the ashtray. The removal of the ashes should
be done when the fireplace is cold.
To empty the ashtray:
1. Push down the ashes through the ashtray grate of the floor
plate so that they fall into the ashtray. Do not overfill the
ashtray.
2. Clean the area around the ashtray grate.
3. Remove the ashtray grate. (see figure 6).
4. Remove the ashtray.
5. Empty the ashes into a metal container.
6. Reposition the ashtray.
7. Install the ashtray grate.
Ashes should be placed 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, 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 thoroughly cooled.
WARNI NGS:
xEven if the fireplace has not been in use for two days, the ashes can still contain hot embers.
xSince the ashtray and the container can become very hot, wear gloves to avoid burns.
3.6 GlassCleaning
If necessary, the glass door may be cleaned with a soft cloth, using a non-abrasive solution such as soap and water.
Commercial glass cleaners intended for fireplaces and stoves may produce better results.
WARNI NGS:
xAbrasive cleaners must not be used because they will produce surface scratches, reducing glass transparency and
resistance to impacts.
xDo not clean the glass when it is hot. The glass panels should be cleaned when the fireplace is cold and not functional.
xIf using a commercial glass cleaner, avoid the painted parts of the fireplace. Glass cleaners can wear off the paint of the
fireplace.

DUET SUPREME FIREPLACES
9Revised October 21st, 2015
Figure 8 ±Glass Replacement
Figure 7 ±Door Components
3.7 GlassReplacement
The glass door of your fireplace must be treated with care, do not slam the doors shut or build the fire too close to the glass.
Do not over fire the Duet. Excessive temperatures or impacts may lead to breakage.
The glass panel is a heat-resistant ceramic type, 5 mm thick. Do not replace the glass with an ordinary glass or a tempered
glass.
Replace immediately a cracked or broken glass. Do not use the fireplace with cracked or broken glass; doing so may result
in a fire hazard.
To replace a broken glass:
CAUTION: Alwayswear glovesand protective eyewear to avoid injuries.
1. Order a pre-cut replacement glass, a door gasket and a glass gasket from your dealer (see NOTE).
2. To remove the door, open the door, lift it and pull it towards the bottom until the rod exits from the hinge holes.
3. Remove the gasket #5 (see figure 7).
4. Remove the nuts, the glass retainer #4 and the glass gasket #2.
5. Remove the broken pieces. Clean the frame carefully to insure that it is free of small fragments.
6. Insert the new glass #3 into the doorframe #1. Center the class
with the frame.
7. Install the glass gasket and the glass retainer.
8. Fix the glass supports to the doorframe. Do not over tighten the
nuts.
9. $SSO\DEHDGZLGWKEHWZHHQ´DQG´RIKLJKWHPSHUDWXUH
silicone on the door gasket groove.
10. Install the new door gasket in the groove.
WARNI NGS:
xDo not slam the door shut. If your glass door cracks or breaks,
replace the glass immediately.
xDo not overfire the fireplace.
xDo not use substitute materials.
3.8 Gasket Replacement
WARNI NG: Never operate the fireplace without a gasket or with a
damaged one. A gasket should be replaced when damaged or worn.
To replace a gasket:
1. Remove the door by opening it, lifting it and pulling it towards the
bottom until the rod exits from the hinge holes.
2. Place the door on a clean, flat surface with the side of the door
having the gasket facing up.
2. Remove the gasket and adhesive.
3. Apply a high temperature resistant silicone on the gasket channel of the door.
4. Place the new gasket and gently press it on the high temperature resistant silicone.
5. Leave the silicone to dry for a minimum of 12 hours.
6. Install the door by inserting the hinges in their respective holes.
The door should be air tight when closed. To verify if the gasket has been properly installed, place a sheet of paper over the
frame of the firebox opening and close the door. If the paper does not slide easily, the gasket has been installed properly.

DUET SUPREME FIREPLACES
10 Revised October 21st, 2015
Figure 8 ±Latch Lubrication
Figure 9 ±Dimensions of the Duet
3.9 Latch Lubrication
Periodically lubricate the latch with grease as indicated in Figure 8.
4. INSTALLATION I NSTRUCTIONS
Note: A uthority having jurisdiction (such as the municipal building department, the fire
department, the fire prevention bureau, etc.) must be consulted before installation to
determine if a building permit is required.
CAUTION: Read these instructions carefully before starting the installation.
Failure to follow these instructions may result in property damage, bodily
har m and even death.
4.1 Location of the Fireplace
Select the appropriate location for the fireplace. The position of the fireplace should be selected on the basis of heat output,
safety and esthetics.
Position the fireplace at the selected location, taking care of respecting the minimum clearances to combustible materials
shown in Figure 15 on page 16.
The cutting of joists and rafters
for floor, ceiling and roof
chimney penetrations will affect
the load bearing capacities of the
dwelling structure. To determine
whether additional support is
required, consult a professional
engineer. Improper cutting of
chimney openings in the attic and
roof will affect the bearing and
thermal insulating capacity as
well as the weather tightness of
the dwelling. Incorrect
workmanship must be avoided.
Consult a professional engineer or
a certified installer if needed.
If possible, select a location for
the fireplace that will minimize
the number of offsets in the
chimney course. Offsets will
reduce the draft, complicate the
FKLPQH\ VZHHSHU¶V ZRUN DQG
increase installation costs. An
installation drawing should be
prepared prior to the installation
work.

DUET SUPREME FIREPLACES
11 Revised October 21st, 2015
4.2 Installation configurations
The following illustrations are examples of the most common installations.

DUET SUPREME FIREPLACES
12 Revised October 21st, 2015

DUET SUPREME FIREPLACES
13 Revised October 21st, 2015
4.2.1 4 Seasons Installation
The Duet can be installed with one side of the fireplace indoors and the other side outdoors.
W A RNING: The 4 Seasons configuration is not recommended when installed in colder climates. Some condensation
may occur.
In order to block the space above the firebox between both faces, the part #DT2317 must be installed:
1. Remove the door of the back face by opening it, lifting it and pulling it towards the bottom until the rod exits from
the hinge holes; the front face is the face where the combustion air control is located.
2. Unscrew the four screws (two by side) and remove the back face.
Figure 10 ±4 Seasons installation

DUET SUPREME FIREPLACES
14 Revised October 21st, 2015
3. Install the part #DT2317 with both tap screws #8 (Figure 11).
4. Install the back face.
5. Install the back door by inserting the hinges in their respective holes.
Note: Take into consideration the thicknessof the finishing material that will be used.
4.2.2 Framing
The framing on the faces of the fireplace must be constructed with nominal 2" x 3" metal studs (see figure 12). The
framing must be nailed or screwed onto the floor and to the ceiling. The fireplace should NOT be placed directly
against, or be in contact with an insulation material.
WARNING: DO NOT NAI L OR SCREW FRAM ING M EMBERS INTO THE FIREPLACE.
Figure 11 ±Part #DT2317 installation
Figure 12 ±Minimum Framing Dimensions

DUET SUPREME FIREPLACES
15 Revised October 21st, 2015
Figure 13 ±Gravity kit installation
Figure 14 ±Hearth extension
4.3 Gravity Kit Installation
Gravity Kit Installation Rules:
xTwo hot air gravity ducts must be installed.
xThe two hot air grilles can be installed in the same or in different
rooms from each other. If the grilles are installed at different
heights, more heat will be distributed to the highest one.
xTwo openings are required at the lower part of the chase for the
entry of the circulating air.
xEach opening must have an area no less than 100 square inches.
WARNI NGS:
xThe hot air grilles of the Gravity Kit should be at least 68 inches
from the floor and the ducting should have a maximum length of
10 feet (see figure 13).
xThe hot air ducts should never extend downwards; only
horizontally or upwards.
xThe hot air ducts must not be connected to a central heating
system.
xThe hot air ducts must be insulated.
xDo not make the chase unnecessarily small. Be sure that the air
entry through the chase can easily flow to the entry at the openings
at the lower part on the sides of the fireplace.
4.4 The Hearth Extension
The minimum dimensions of the hearth extension are specified in figure 14. The hearth extension is to be covered with non-
combustible materials only, such as steel, cement or mortar, stone, brick, ceramic tiles. Unidentified materials may be
combustible: verify the product specifications prior to installation.
The hearth extension must extend a minimum of 16 inches measured from the door of the fireplace and extended all the way
back to the fireplace.
WARNING: The hearth extension isto be installed only as
illustrated in figure 14. The hearth extension should extend
a minimum of 16 inchesfrom the fireplace door.
Make sure to seal the gap between each fireplace face and the
hearth extension with a metal strip or a sand-cement grout in
order to prevent sparks or embers from reaching combustible
materials.

DUET SUPREME FIREPLACES
16 Revised October 21st, 2015
4.5 Clearancesto Combustibles
The clearances to combustibles indicated in the Figure 15 below must be respected. Failing to do so can result in a fire or
safety hazard.
Figure 15 ±Clearances to Combustibles

DUET SUPREME FIREPLACES
17 Revised October 21st, 2015
Figure 17 ±Blower Kit W iring
Figure 16 ±Blower Kit Location
NOTE: Material that is non-combustible may protrude around the fireplace.
Clearancesto the front of the fireplace:
The minimum distance between the front of the fireplace and any combustible material is 5 feet, (152 cm).
Do not place such materials within this minimum distance in order to reduce risk of fire.
4.6 Blower Kit I nstallation
A blower kit is supplied with the Duet fireplace. It includes two
125 cfm blowers. A variable speed control and a heat sensory
thermodisk also come standard with the Duet. Do not install a
substitute kit as this may result in overheating and risk of fire.
The location of the blowers is shown in figure 16 and the
blower kit wiring in Figure 17. The electric power must be 115
volts. The speed control must be placed in a convenient place
near the fireplace.
Note: All electrical connectionsmust be made by a qualified electrician.
Once all the appropriate connections have been
made, the blowers should turn on and turn off
automatically. W hen the fireplace gets hot and the
thermodisk reaches 95°F, the blowers will turn on.
The average time it takes for the blowers to activate
is 30 to 45 minutes after starting a fire the
recommended way as explained in section 2.4. The
blowers will turn off once the fireplace has cooled
down and the thermodisk is 85°F. The speed of the
blowers can be adjusted with the variable speed
control mounted on the wall. The Duet can also be
used with the blowers turned off or in the occurrence
of a power failure.
4.7 Chimney Installation
7KHXVHRID´OLVWHG8/8/&6DSSURYHGFKLPQH\LVUHTXLUHG
NOTE: The fireplace can be installed with a 7 inch chimney as long as there is a 6 inch to 7 inch adaptor installed. The
adaptor must be of the same chimney brand. Do not mix chimney parts of different brands.
WARNING: W hen connecting the fireplace to an existing chimney, inspect thoroughly the installation of the
existing chimney, verify that the installation conforms to the chimney manufactureU¶s requirements and the chimney is in
good condition.
NOTE: In most cases, it ispreferable to replace the existing chimney. Do not take unnecessary risks.
WARNING: Alwaysrespect the minimum clearancesto combustibles. A 2 inch minimum clearance isrequired for
prefabricated chimneys.
4.7.1 General Rules
CAUTION: Follow the FKLPQH\PDQXIDFWXUHU¶VLQVWUXFWLRQVIRUFRUUHFWchimney installation, unlessotherwise
specified in these instructions.

DUET SUPREME FIREPLACES
18 Revised October 21st, 2015
xInstalling an interior chimney system will provide optimal performance. Exterior chimney systems may cause
drafting issues and an increased creosote buildup rate.
xThe height of the chimney, including the fireplace, must be between 15 and 35 feet.
xThe chimney must be connected only to the fireplace to be installed: it must not be connected to any other
appliance.
xPortions of the chimney that extend through accessible spaces shall be enclosed by an enclosure.
xThe clearance between the chimney and any combustible material must not be less than 2 in.: this free space must
not be filled with insulation or any other material.
xAt least one support must be incorporated in the chimney installation.
xA fire stop is required at each joist where the chimney goes through a ceiling or floor and through a wall.
xAvoid deviations whenever possible. Deviations (especially more pronounced deviations) may cause drafting
issues.
xThe chimney shall extend at least 3 ft above its point of contact with the roof and at least 2 ft higher than any wall,
roof or adjacent building within a radius of 10 ft.
xIf the chimney extends 5 feet or more above the contact point with the roof, a roof brace must secure it in place.
xA rain cap must be installed on the top of the chimney in order to avoid internal damage and corrosion.
x$OZD\VVWDUWZLWKD´DQFKRUSODWHIURP\RXUILUHSODFH
xFor clearances to combustibles when installing a combustible chase enclosure for above roof chimney sections,
consult with the chimney manufacturer.
Obtain the chimney installation instructions from your vendor, prior to the installation of the chimney. The chimney
installation must comply with the chimney manufacturer's instructions, unless otherwise noted in these instructions.
An anchor plate, supplied by the chimney manufacturer, must be fixed on the fireplace top with four self -tapping screws.
The connection of the chimney to the fireplace is done by installing the first chimney section (or an elbow) to the anchor
plate.
4.7.2 Reference Table of Listed UL 103/ULC S629 Chimneys
Note: The Table 1 is for reference only. Other models can be used as long as they are listed to UL 103/ULC S629 standards.
Manufacturer
Models
ICC
xExcel 2100´6ROLG3DFN´LQQHUGLDPHWHU
Security Chimney
x$6+7´6ROLG3DFN´LQQHUGLDPHWHU
xS-´6ROLG3DFN´LQQHUGLDPHWHU
FMI (US only)
xAC, A C Triple W all, ´LQQHUGLDPHWHU
Selkirk
x6XSHU3UR635´6ROLG3DFN´LQQHUGLDPHWHU
x6XSHU3UR$/7´6ROLG3DFN´LQQHUGLDPHWHU
x+DUW&RROH\7/&´6ROLG3DFN´LQQHUGLDPHWHU
xSure-7HPS67´6ROLG3DFN´LQQHUGLDPHWHU
x6XSHU9HQW-6&´6ROLG3DFN´ inner diameter
xSuper Vent 2100 (JM ´6ROLG3DFN´LQQHUGLDPHWHU
xUltra-7HPS87´6ROLG3DFN´LQQHUGLDPHWHU
x8OWLPDWH2QH´6ROLG3DFN´LQQHUGLDPHWHU
xCF Sentinel &)´6ROLG3DFN´LQQHUGLDPHWHU
Simpson Dura-Vent
x'XUD7HFK´6ROLG3DFN´LQQHUGLDPHWHU
xDura Plus HTC´6ROLG3DFN´LQQHUGLDPHWHU
xDura Plus, A C Triple W all, ´LQQHUGLDPHWHU
Metal Fab
xTemp Guard´6ROLG3DFN´LQQHUGLDPHWHU
American Metal
xHS, A C Triple W all, ´LQQHUGLDPHWHU
xHSS, A C Triple W all, ´ inner diameter
Olympia Chimney
x9HQWLV´6ROLG3DFN´LQQHUGLDPHWHU
Figure 4
Table 1 ±List of A pproved Chimneys

DUET SUPREME FIREPLACES
19 Revised October 21st, 2015
Figure 18 ±Typical Chimney Installation
4.7.3 Chimney I nstallation I nstructions
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ceilings, roof and floors that the chimney will pass through.
2. Install a firestop from below in every ceiling/floor division through which the
chimney passes. A n attic radiation shield must be installed from above at the
attic level.
3. Install the anchor plate supplied by the chimney manufacturer on the top of
the fireplace.
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chimney lengths. Lock each length in place.
5. Install the appropriate firestop each time the chimney passes through a wall
or ceiling.
6. Install the roof support once the desired height is reached.
7. Position the roof flashing. For sloping roofs, slide the top edge of the flashing
under the shingles. A t least half of the flashing should be under the shingles
and the lower end over the shingles. Seal the joint between the roof and the
flashing with roofing cement or silicone. Fix the flashing to the roof with
roofing nails.
8. Over the flashing, install the storm collar by tightening the bolt that is
supplied. Seal the joint using silicone caulking between the chimney and the
storm collar.
9. Install the chimney rain cap.
WARNING: Do not seal or caulk the ventilating openingswhen installing a
ventilated roof flashing.
4.7.4 Typical Chimney I nstallations
The figure 18 is an example of typical chimney installations. Y our installation may
be different from this figure.
4.7.5 Offset I nstallation
In order to avoid obstacles or to extend the chimney outside, it is possible to offset
the aforementioned by using elbows (see figure 18).
xA maximum of two offsets (2 elbows per offset) is permitted.
xThe allowable maximum deviation is 45oin Canada and 30o in the US.
xSecure the chimney parts according to the instructions given by the chimney manufacturer.
xA support strap, a wall or a roof support must be installed above each offset in order to support the vertical length of the
chimney above the offset.
xThe chimney must extend vertically through a ceiling/floor. Do not install elbows in this area.
xUse a support on the first 15 foot section.
To install an elbow:
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instructions.
2. Follow WKHFKLPQH\PDQXIDFWXUHU¶VLQVWUXFWLRQVWRLQVWDOOWKHFKLPQH\OHQJWKVQHFHVVDU\IRUWKHRIIVHW
3. Secure a second elbow to turn the chimney in the vertical position.
4. Cut and frame a hole in the ceiling and floor to allow the chimney to pass through.
5. Install a firestop from below.
N.B.: Always install a ventilated flashing and a roof firestop, unless it is otherwise specified by the chimney
manufacturer.

DUET SUPREME FIREPLACES
20 Revised October 21st, 2015
Figure 19 ±Liner Connector
4.7.6 Angled Wall Radiation Shield
The chimney can pass through a wall at an angle of 30° or 45° in Canada and 30° in the United States. For installations
requiring the chimney to pass through a combustible wall, a wall radiation shield or an angled firestop must be installed.
The wall radiation shield or the angled firestop used is provided by the chimney manufacturer and must be installed
DFFRUGLQJWRWKHFKLPQH\PDQXIDFWXUHU¶VLQVWUXFWLRQV8VLQJDZDOOUDGLDWLRQVKLHOGWKDWLVLQVXODWHGLVUHFRPPHQGHG IRU
colder climates.
4.7.7 Connection to a M asonry Chimney
The Duet fireplace can be connected to a masonry chimney. The masonry chimney must comply with the national and local
building codes.
A stainless steel liner of 6 in. diameter, complying with the standard ULC-S635-M2000 in Canada
or UL-1777 in the US, must be installed in the chimney. The liner must be continuous and its
LQVWDOODWLRQPXVWFRPSO\ZLWKWKHPDQXIDFWXUHU¶VLQVWUXFWLRQV
An insulated chimney from the model specified in Table 1 must extend from the fireplace to at
least 3 in. inside the masonry chimney and connect to the chimney liner. Use the liner connector
designed by SUPREME as shown in figure 19.
General notes:
Before the installation, the masonry chimney must be inspected by authority having jurisdiction to
determine the following:
xIf the chimney is constructed in accordance with local building codes and the national
building code.
xIf it has been thoroughly cleaned and inspected and determine if it is in good
condition. Reparations must be done if necessary.
xThat the chimney is not shared with other appliances such as a furnace, a hot water heater or another fireplace.
xThat the flue of the chimney is of adequate size for the fireplace to be installed.
xThe fireplace must be placed as close as possible to the existing chimney.
x7KHPLQLPXPFOHDUDQFHVWRFRPEXVWLEOHVDVVWDWHGLQWKHRZQHU¶VPDQXDOPXVWEHUHVSHFWHG
xElbows can be used to deviate and enter the masonry chimney when possible as shown in figure 20.
xThe allowable maximum deviation is 45oin Canada and 30o in the US.
x7KHSUHIDEULFDWHGFKLPQH\DQGWKHOLQHUPXVWEHLQVWDOOHGDFFRUGLQJWRWKHPDQXIDFWXUHU¶VLQVWUXFWLRQV
Installation:
1. Install the anchor plate on the top of the fireplace.
2. Place the fireplace at the desired location.
3. Install elbows, if required.
4. Mark where the prefabricated chimney will penetrate the masonry chimney.
5. Remove the fireplace so it will be easier to work.
6. Make a hole to the required size so the prefabricated chimney can be inserted freely in the masonry chimney.
7. Fix with three self-tapping screws the flange holder (aligned with the center of the prefabricated chimney) on the
upper end of the elbow (or tee) to be connected to the liner.
8. Place and level the fireplace at the desired location.
9. Install fire stops if you are penetrating a combustible wall.
10. Install the required elbows and chimney lengths to the center of the masonry chimney.
11. Insert at least one inch of the lower end of the liner in the slightly expanded end of the liner connector and fix them
with three self- tapping screws #8: make sure the connector flange is already inserted around the liner connector.
12. Bring the liner down from the top of the masonry chimney and insert the liner connector in the upper end of the
prefabricated chimney.
13. Align the holes of the connector flange with the threaded studs of the flange holder, and secure the connection with
the wing nuts.
14. Using refractory cement that is resistant to high temperatures, close up the opening around the prefabricated chimney.