SUPREME Astra 32 User manual

Astra 32
Owner’s Manual
Model Number: 32SFC
This product is proudly developed and manufactured in North America by SUPREME FIREPLACES INC.
3594 Jarry East, Montreal, QC H1Z 2G4
T: 877-593-4722, F: 514-593-4424
www.supremem.com
Revised: June 2022
IMPORTANT: Keep the owner’s manual for future use.

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CONTENTS
SAFETY.....................................................................................................................................................1
GENERAL INFORMATION ........................................................................................................................2
2.1 Overall Dimensions.............................................................................................................................2
2.2 Specifications......................................................................................................................................3
2.3 Combustion Air Control .......................................................................................................................4
2.4 Cold Hand Key....................................................................................................................................4
2.5 Chimney Sweeping Cap......................................................................................................................4
2.6 Door....................................................................................................................................................4
2.7 Certification Label................................................................................................................................5
2.8 Removable Ash Lip.............................................................................................................................5
2.9 SUPREME Radiation Shield Offset .....................................................................................................5
2.10 Baffle Secondary Burn Technology .....................................................................................................5
2.11 Cast Iron Interior..................................................................................................................................6
2.12 Blower Kit............................................................................................................................................6
2.13 Optional Hot Air Kit..............................................................................................................................6
2.14 Optional Fresh Air Kit ..........................................................................................................................6
INSTALLATION INSTRUCTIONS ..............................................................................................................7
3.1 Location...............................................................................................................................................7
3.2 Chimney Installation............................................................................................................................8
3.2.1 General Rules and Guidelines......................................................................................................8
3.2.2 Listed UL 103 / ULC S629 Approved Chimney Models (Reference Table)...................................9
3.2.3 Chimney Installation Instructions..................................................................................................9
3.2.4 Offset Installation........................................................................................................................10
3.2.5 Angled Wall Radiation Shield .....................................................................................................10
3.2.6 Connecting to a Masonry Chimney.............................................................................................10
3.3 Framing.............................................................................................................................................12
3.4 Surround Installation..........................................................................................................................13
3.4.1 Traditional Surround...................................................................................................................13
3.4.2 Clean face Surround ..................................................................................................................14
3.5 Gravity Kit Installation........................................................................................................................16
3.5.1 Dual Louver Gravity Ducts..........................................................................................................16
3.5.2 Single Linear Front Louver .........................................................................................................18

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3.6 Hearth Extension...............................................................................................................................22
3.7 Chase Installation..............................................................................................................................23
3.8 Clearances to Combustibles..............................................................................................................24
3.9 Blower Kit..........................................................................................................................................25
OPTIONS.................................................................................................................................................27
4.1 Hot Air Kit..........................................................................................................................................27
4.2 Fresh Air Kit ......................................................................................................................................29
OPERATION INSTRUCTIONS.................................................................................................................30
5.1 Fuel...................................................................................................................................................30
5.2 First Fires..........................................................................................................................................30
5.3 Operating the Combustion Air Control...............................................................................................31
5.4 Starting a High Efficiency Fire ...........................................................................................................31
5.5 Adding a New Load of Wood.............................................................................................................32
5.6 Blower Kit Operation..........................................................................................................................33
TROUBLESHOOTING .............................................................................................................................34
6.1 Backdraft / Smoking ..........................................................................................................................34
6.2 Over Firing ........................................................................................................................................34
MAINTENANCE .......................................................................................................................................35
7.1 Disposal of Ashes..............................................................................................................................35
7.2 Chimney Maintenance.......................................................................................................................35
7.3 Cleaning of Glass..............................................................................................................................36
7.4 Replacing a Cast Iron Panel..............................................................................................................36
7.5 Replacing the Door Gasket................................................................................................................36
7.6 Replacing the Glass Panel ................................................................................................................37
7.7 Door Latch Maintenance ...................................................................................................................38
7.8 Paint..................................................................................................................................................38
PARTS LIST.............................................................................................................................................39
CERTIFICATION LABEL..........................................................................................................................40
WARRANTY.............................................................................................................................................41

1
SAFETY
SUPREME FIREPLACES INC. congratulates you on purchasing an Astra 32 wood burning fireplace. This
manual describes the installation and operation of the Astra 32 non-catalytic wood heater. This heater meets the
2020 U.S. Environmental Protection Agency’s crib wood emission limits for wood heaters sold after May 15,
2015. Under specific test conditions this heater has been shown to deliver heat at rates ranging from 12,430 to
29,274 Btu/hr. In addition, this fireplace complies with the ULC-S610 and UL-127 standards.
SAFETY NOTICE: Carefully read this manual before installation and operation of this fireplace. A house
fire may result if not properly installed. 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.
This product can expose you to
chemicals including carbon monoxide,
which is known to the State of California
to cause cancer, birth defects or other
reproductive harm. For more information
go to www.P65warnings.ca.gov/
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 obstructions.
•Do not use this unit while the home is under construction or being obstructed.
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.”

2
GENERAL INFORMATION
2.1 Overall Dimensions
Figure 2-1: Astra 32 Traditional Dimensions
Figure 2-2: Astra 32 Clean Face Dimensions

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2.2 Specifications
Appliance Type:
Adjustable Burn Rate Wood Heater –Non-Catalytic
Fuel Type:
Dry Cordwood
Maximum Log Length:
24 in (6.09 cm)
Burn Time1:
6 to 12 hrs
Firebox Volume:
3.2 ft3 (0.091 m3)
Heating Area:
1,000 to 2,000 ft2(93 to 185 m2)
Average Particulate Emissions Rate2:
1.47 g/hr
Average CO Emissions Rate3:
1.97 g/min
EPA Protocol:
Method 28R, ASTM2780-10, and ASTM2515-11
Efficiency (Crib Wood):
HHV4: 67.3% | LHV5: 71.9%
Heat Output (Crib Wood):
12,430 to 29,274 BTU/hr (3,643 to 8,579 W)
Optimum Efficiency:
75%
Optimum Heat Output:
100,000 BTU (29.3 kWh)
Efficiency Protocol:
CSA B415.1-10
1
Depending on combustion air control setting (see Section 5.3 for further details).
2
Officially tested and certified by an independent laboratory.
3
Note that rate is smaller for low to medium/low burn rates.
4
Higher Heating Value.
5
Lower Heating Value.
WARRANTY REGISTRATION
Please register your SUPREME product online at http://www.supremem.com/warranty.php to ensure full
warranty coverage. Proof of purchase is required for all warranty claims.

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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. The combustion air control of the Astra 32 has two components:
the Activator and the Burn Rate Selector (see Figure 2-3). The left combustion
control lever isthe Activator. When starting a fire or adding a newload 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.
WARNING: Never manipulate the Combustion Air Control with bare
hands as it gets hot when the Astra 32 is in operation. Use the Cold Hand
Key (see Section 2.4) to adjust the Combustion Air Control.
2.4 Cold Hand Key
The Cold Hand Key is an accessory that comes standard with the Astra 32 fireplace
(Figure 2-4). The Cold Hand Key is a tool used to manipulate the Combustion Air
Control Levers when they are hot.
2.5 Chimney Sweeping Cap
The chimney sweeping cap found at the baffle of the Astra 32
allows easy access for chimney sweeping without having to
remove any components of the firebox (Figure 2-5).
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 blockingthe baffle hole
during combustion is a safety hazard, will overheat the
fireplace and void the warranty.
2.6 Door
The Astra 32 wood burning fireplace 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.
Figure 2-3: Combustion Air Control’s
Activator and Burn Rate Selector
Figure 2-4: Cold Hand Key
Figure 2-5: Chimney Sweeping Cap

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2.7 Certification Label
The certification label contains important information regarding
the installation and operation of the Astra 32 fireplace. In
addition, the serial number of the unit is permanently
embossed onto the top right corner. See Figure 2-6 for the
location of the certification label.
2.8 Removable Ash Lip
The Ash Lip is a removable accessory that comes standard
with the Astra 32 fireplace (Figure 2-7). 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.
NOTE: The door of the Astra 32 must remain closed at all times during
operation.
2.9 SUPREME Radiation Shield Offset
The SUPREME Radiation Shield Offset is a standard component for the
Astra 32 fireplace (Figure 2-8). Prior to installing the chimney
manufacturer’s radiation shield, the SUPREME Radiation Shield Offset is
fastened below the chimney opening within the chase, with the flanges
along the component providing a ½” offset.
2.10 Baffle Secondary Burn Technology
An innovative baffle design comprises of carefully engineered perforations
that allow the introduction of secondary air to increase the efficiency and
heat output while offering an uncompromising view of the fire (Figure 2-9).
CAUTION: It is not recommended to remove the baffle. If the baffle
needs to be removed, please contact SUPREME FIREPLACES INC.
beforehand.
Figure 2-6: Location of Certification Label with Product
Serial Number
Figure 2-7: Removable Ash Lip
Figure 2-8: SUPREME Radiation
Shield Offset
Figure 2-9: Baffle Secondary Burn Technology

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2.11 Cast Iron Interior
The Astra’s stainless steel firebox is lined with cast iron panels for an extra layer of durability and strength.
Designed to provide long-lasting heat and thermal protection, these industry-first, decoratively stamped panels
also provide the added benefit of the timeless beauty of cast iron. Forged in fire, tempered with time, the Astra
offers a lifetime of warmth.
2.12 Blower Kit
An AC tangential blower (electrical rating: 115V, 60Hz, and 56W) with a variable speed control is installed into
the Astra 32 wood burning fireplace to maximize efficiency. Refer to Section 3.9 for installation instructions.
WARNING: Make certain that the fireplace in not in operation and the blower is unplugged (breaker off)
before accessing the electrical wiring of the blower kit.
CAUTION: Only a blower provided by SUPREME FIREPLACES INC. can be installed into the fireplace.
Substituting the blower kit may result in overheating, will void the warranty and can be hazardous.
2.13 Optional Hot Air Kit
The Optional Hot Air Kit (kit number SU250) allows heatto be drawn from the unit by a thermostatically controlled
blower (electrical rating: 115 V and 60 Hz) and dispersed to different areas of the house. This option is
recommended when the fireplace is installed in an area below the maximum heating space. A total of three kits
can be installed onto one unit with a maximum distance of 25 feet each. Note that a 5 inch insulated duct (part
number UCAC5) is required for the installation (item ordered separately). Refer to Section 4.1 for installation
instructions.
WARNING: Make certain that the fireplace in not in operation and that hot air blower is not powered
(breaker off) before accessing the electrical wiring of the hot air kit.
CAUTION: Only a hot air kit provided by SUPREME FIREPLACES INC. can be installed onto the fireplace.
Substituting the hot air kit may result in overheating, will void the warranty and can be hazardous.
2.14 Optional Fresh Air Kit
The Optional Fresh Air Kit (kit number UPEA4) allows for exterior air (outdoors) to be drawn into the fireplace
during operation of the unit. Note that a 4 inch insulated duct is required for the installation (item ordered
separately). Refer to Section 4.2 for installation instructions. Contact your local building official regarding
mandatory fresh air kit installations within your area.
CAUTION: Only a fresh air kit provided by SUPREME FIREPLACES INC. can be installed onto the
fireplace. Substituting the fresh air kit may result in overheating and will void the warranty.

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INSTALLATION INSTRUCTIONS
Before installing the unit, consult an authority having jurisdiction
(such as your municipal building department, your fire department,
your fire prevention department...) for any local codes and whether
a permit is required. In the absence of local codes, refer to the CSA
B365 Installation Code for Solid Burning Appliances and Equipment
(Canada) or the ANSI NFPA 211 Standard for Chimneys, Fireplaces,
Vents and Solid Fuel-Burning Appliances (USA). CAUTION:
Modifications/alterations to the unit/installation without written
authorization from SUPREME FIREPLACES INC. are strictly
forbidden and will void the warranty. Refer to Section 1 for further
safety information. Carefully read the instructions below before
installing your Astra 32.
3.1 Location
Determine the location of the Astra 32 by taking into consideration
the following criteria:
•The size of the room with respect to the heat output of the
fireplace.
•The proximity of windows, doors, and traffic flow.
•The necessary amount of space in front of the unit for the hearth
extension and mantel (Refer to Sections 3.6 and 3.8).
•The clearances to combustible materials.
•The passage of the chimney.
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 chimney sweeper’s work, and increase installation
costs. Do not install an offset directly onto the unit/anchor plate.
Technical drawings outlining the chimney route should be prepared
prior to the installation. NOTE: 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 your local building codes.
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. Avoid incorrect workmanship by consulting
a professional engineer or a certified installer.
Through examination of the floor construction, ensure that the
fireplace and chimney system is resting on a surface capable of
withstanding its weight. Consult your building codes to see whether
additional structural supports are required (applicable for rare and
isolated cases).
Avoid having the chimney outlet near any obstructions (such as trees
and roof offsets) as the draft of the chimney may be affected by wind
turbulence. Ideally position the outlet of the chimney at the highest
area of the roof.
NOTE: It is strongly recommended to install a carbon monoxide
(CO) and smoke detector near the location of the unit.
Figure 3-1: Straight Wall Installation
Figure 3-2: Corner Installation
Figure 3-3: Space Required for Forced Hot Air System
Installations
Refer to Sections 4.1 and 4.2
Figure 3-4: Space Required for Fresh Air Kit
Installations
Refer to Sections 4.1 and 4.2