kozy heat OSSEO 45 SL User manual

HUSSONG MANUFACTURING CO., INC.
INSTALLATION AND
OPERATION MANUAL
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
English and French installation manuals are available through your
local dealer. Visit our website www.kozyheat.com.
Les manuels d’installation en français et en anglais sont disponibles
chez votre détaillant local. Visitez www.kozyheat.com .
OSSEO 45SL
OSSEO 60SL
Models OSO-45-SL & OSO-60-SL
Electric Fireplace
Hussong Mfg. Co., Inc.
OSO-45-SL & OSO-60-SL
Rev. 1, August 2022
Starting Serial Number OSO-45-SL:22-OS45SL00001-36
Starting Serial Number OSO-60-SL:22-OS60SL00001-36
WARNING
Read and understand the entire installation
and operation manual, including all safety
information, before plugging in or using this
product. Failure to do so may result in re,
electric shock, or serious personal injury.
This replace meets the construction and
safety standards of H.U.D. for application
in manufactured homes when installed
according to these instructions.

#OSO-45-SL #OSO-60-SL R.1August 2022Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces HOMEOWNER REFERENCE INFORMATION 3
Read this manual before installation or operating this appliance.
Please retain this owner’s manual for future reference.
CON GRAT ULAT ION S!
We welcome you as a new own of a Kozy Heat elecic feplace. Kozy Heat products e
designed with supi components and matials, and assembled by ained crasmen who
take pride in the wk. O commitment to quality and custom satisfaction has emained
the same f ov 40 yes. We o a complete line of gas, wood, and elecic feplaces, along
with stylish accessies to complement any dec. Adding a feplace is one of the best ways to
increase the value of yo home, and we e proud to o a netwk of deals throughout the
couny to help make yo expience evything you imagine. We pride oselves in being
dedicated not only to functionality and eliability, but also custom safety. We o o
continual suppt and guidance to help you achieve the maximum benet and enjoyment om
yo Kozy Heat elecic feplace.
Jim Hussong
President
Dudley Hussong
Board Chairman
Homeowner Reference Information
We recommend you record the following information:
Model Name: ____________________________________________
Serial Number: ___________________________________________
Dealership Purchased from: ________________________________
Date purchased/installed: __________________________________
Location of replace: ______________________________________
Dealer phone: ___________________________________________
Notes: ______________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces TABLE OF CONTENTS 5
TABLE OF CONTENTS
HOMEOWNER REFERENCE INFORMATION .................................3
TABLE OF CONTENTS..................................................................... 5
IMPORTANT INSTRUCTIONS.........................................................7
1.0 SPECIFICATIONS .....................................................................8
1.1 Appliance Certication ............................................................................. 8
1.2 California Proposition 65 Warning........................................................ 8
1.3 Electrical Specications ............................................................................ 8
1.4 Appliance Preparation .............................................................................. 8
1.5 Parts and Hardware.................................................................................... 9
1.6 Appliance Dimensions.............................................................................. 10
2.0 ASSEMBLY AND INSTALLATION ............................................ 11
2.1 Installation Planning.................................................................................. 11
2.2 Clearances to Combustibles ................................................................... 11
2.3 Power............................................................................................................... 11
2.4 Rough Opening........................................................................................... 12
2.5 Front Trim Removal and Installation.................................................... 13
2.6 Nailing Flange Installation....................................................................... 14
3.0 FACING AND FINISHING......................................................... 16
3.1 Facing and Finishing Requirements .................................................... 16
4.0 HARD WIRING INSTALLATION............................................... 17
4.1 Hard Wiring Connection........................................................................... 17
5.0 APPLIANCE SETUP.................................................................. 18
5.1 Glass Front Removal and Installation .................................................. 18
5.2 Media Installation ....................................................................................... 19
6.0 OPERATING INSTRUCTIONS .................................................. 21
6.1 Methods of Operation............................................................................... 21
7.0 MAINTENANCE INSTRUCTIONS ............................................ 25
7.1 Cleaning ......................................................................................................... 25
7.2 Maintenance................................................................................................. 25
7.3 Remote Control Battery Information................................................... 25
8.0 TROUBLESHOOTING............................................................... 26
9.0 REPLACEMENT PARTS LIST.................................................... 27
LIMITED WARRANTY...................................................................... 29
2.7Wall Mounted Installation........................................................................ 15

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces IMPORTANT INSTRUCTIONS 7
When using electrical appliances, basic precautions should always
be followed to reduce the risk of re, electric shock, and injury to
persons, including the following:
1. Read all instructions before installing or using the heater.
2. This heater is hot when in use. To avoid burns, do not let bare
skin touch hot surfaces. Keep combustible materials, such as
furniture, pillows, bedding, papers, clothes, etc. and curtains at
least 36” (914mm) from the front of the heater.
3. Extreme caution is necessary when any heater used by or near
children or invalids and whenever the heater is left operating
and unattended.
4. Do not operate any heater after it malfunctions. Disconnect
power at service panel and have heater inspected by a reputable
electrician before reusing.
5. Do not use outdoors.
6. To disconnect the heater, turn the controls to OFF, and turn o
the power to the heater circuit at the main disconnect panel.
7. Do not insert or allow foreign objects to enter any ventilation
or exhaust opening, as this may cause an electric shock, re, or
damage to the heater.
8. To prevent a possible re, do not block air intakes or exhaust in
any manner.
9. A heater has hot and arcing or sparking parts inside. Do not use
in areas where gasoline, paint, ammable vapors, or liquids are
used or stored.
10. Use this heater only as described in this manual. Any other use
not recommended by Hussong Mfg. Co., Inc. may cause re,
electric shock, or injury to persons.
11. ALWAYS plug the heater directly into a wall outlet/receptacle.
NEVER use with an extension cord or relocation power tap
(outlet/power strip).
12. AVOID FIRE! Inspect all air vents to make sure they are free from
dust, lint, or other blockage before use. Unplug the appliance
and clean with a vacuum ONLY. DO NOT rinse or allow the
appliance to become wet.
13. This heater is not intended to be a primary heat source. It is for
supplemental heat only.
14. ALWAYS disconnect this heater from the power supply before
performing any assembly and cleaning.
15. NEVER plug this heater into an outlet that is old, cracked, or has
any loose wires or connections. Plugging this heater into a faulty
outlet could result in electric arcing within the outlet that could
cause the outlet to overheat or catch re.
16. Verify the plug ts tight in the outlet. Faulty wall outlet
connections or loose plugs can cause the wall outlet to overheat.
17. This heater draws more current than other small heaters.
Overheating may occur even if it has not occurred with the use
of other heaters.
SAVE THESE INSTRUCTIONS
IMPORTANT INSTRUCTIONS

8SPECIFICATIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
1.0 SPECIFICATIONS
1.1 Appliance Certication
Laboratory: CSA in Cleveland, Ohio, USA
Standards:
CSA C22.2 No 46-13 Electric Air-Heaters
UL 2021 (4th Edition) (Dec. 14, 2016) Fixed and Location-Dedicated
Electric Room Heaters
1.2 California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm -
www.P65Warnings.ca.gov.
1.3 Electrical Specications
• This appliance is rated at 120VAC, 60Hz, 1500W. Install on a
dedicated 15 Amp (or higher) breaker.
• The power cord supplied with the appliance has three prongs:
two at blades (live and neutral) and one round pin (ground). If
a 3-slot receptacle is not available, and adapter (not included)
MUST be used. The green grounding lug extending from the
adapter must be connected to a permanent ground such as a
properly grounded outlet box. The adapter should not be used if
a three-slot grounded receptacle is available.
Figure 1.1, Adapter
Grounding pin
Adapter
Metal grounding
screw
Cover of grounded
outlet box
1.4 Appliance Preparation
WARNING: This product includes glass components. Always use
extreme caution when handling glass. Failure to do so could result in
personal injury or property damage.
Remove all parts and hardware from the carton and place them on a
clean, soft, dry surface. Check the parts list to verify all components
are there. Dispose of packaging materials properly. Please recycle
whenever possible.
You will need the following tools (not included):
• Phillips screwdriver
• Stud nder
• Level
• Tape measure
• Electric drill
• 1/4” wood drill bit
• Hammer

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces SPECIFICATIONS 9
1.5 Parts and Hardware
Wood Screw
Remote Control
Wall Anchors
Electrical Grommet
River Rocks
Nailing Flange
Cover Plate
Crystals (small)
ST Screw
Wall Bracket
(Pre-fixed on the back of the fireplace box)

10 SPECIFICATIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
1.6 Appliance Dimensions
Figure 1.2, #OSO-45-SL & #OSO-60-SL
Table 1.1, Appliance Dimensions for the OSO-45-SL and OSO-60-SL
Model
Number A B C E F D G H
OSO-45-SL 50-1/8''
（1273mm）
21-5/8''
（550mm）
5-7/8''
（150mm）
16-1/4''
（412mm）
45-1/8''
（1145mm）
20-7/8''
（530mm）
5-3/8''
（138mm）
48''
（1220mm）
OSO-60-SL 65-1/8''
（1654mm）
21-5/8''
（550mm）
5-7/8''
（150mm）
16-1/4''
（412mm）
20-7/8''
（530mm）
5-3/8''
（138mm）
（1524mm）
60'' 63''
（1600mm）

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces ASSEMBLY AND INSTALLATION 11
2.0 ASSEMBLY AND INSTALLATION
2.1 Installation Planning
NOTE: Follow all national and local electrical codes.
To reduce the risk of re, do not store or use gasoline or other ammable
vapors and liquids in the vicinity of the heater.
This appliance is to be set flush with framing to allow facing material
to cover the unit up to the finishing edge surrounding the glass front.
It can also be hardwired or plugged into a receptacle (power cord
supplied).
Select a suitable location that is not susceptible to moisture and is
away from drapes and furniture.
2.2 Clearances to Combustibles
Table 2.1, Minimum Clearances to Combustibles
Bottom of appliance 0” (0mm)
Left and right sides of appliance 0” (0mm)
Back of appliance
Front of appliance 36” (914mm)
Top of viewing opening to 2” (51mm) mantel 2-7/8” (73mm)
Top of viewing opening to ceiling 7-7/8” (200mm)
Top of appliance to enclosure 1/2” (12mm)
2.3 Power
This appliance is rated at 120VAC, 60Hz, 1500W. Install on a dedicated
15 Amp (or higher) breaker. Verify the grounded outlet is in good
working condition and the plug is not loose. Never exceed the
maximum amperage for the circuit. DO NOT plug other appliances
into the same circuit.
0” (0mm)

12 ASSEMBLY AND INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
2.4 Rough Opening
• Select a location not prone to moisture and is located at least 36”
(914mm) away from the front of the appliance to combustible
materials such as curtains, drapes, furniture, bedding, paper, etc.
1. Create a rough opening with electrical. See Figure 2.1.
The vent grill openings on the top and at the rear of the appliance
require a 1/2” (12mm) clearance to framing.
Remove the front trim. Refer to Section 2.5 Front Trim Removal
and Installation on page 13
Remove the glass front. See Section 5.1 Glass Front Removal
and Installation on page 1 .
Figure 2.1, Rough Opening Dimensions
Table 2.2, Rough Opening Dimensions
Model Number I J K
OSO-45 48-3/4” (1238mm) ” (5 mm) 5- ” ( mm)
OSO-60 ” (5 mm) 5- ” ( mm)
Dimension ‘J’ includes appliance
height plus 1/2” (12mm) clearance
Dimension ‘K’ includes appliance
depth plus 1/2” (12mm) clearance
NOTE:
* For 2"x4" framing application use OSO45-TAK or OSO60-TAK
*
64” 1626( mm)

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces ASSEMBLY AND INSTALLATION 13
2.5 Front Trim Removal and Installation
1. Take off all screws under the front trim.(Figure 2.2)
2. Carefully pull the front trim out from the appliance (Figure 2.3). Place it face
down on a soft, non-abrasive surface.
3. Reverse these steps to install the front trim.
Figure 2.2, Front Trim Installation and Removal Figure 2.3, Front Trim Installation and Removal

14 ASSEMBLY AND INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
2.6 Nailing Flange Installation
The appliance should be set ush with framing for proper nishing
material installation.
1. Power the appliance by plugging into the wall receptacle. For
hard wiring, please remove power cord and complete hard
wiring (See Section 4.1 Hard Wiring Connection on page 16).
2. Attach the four nailing flanges with (8) self-tapping (ST) screws
(included) to the sides of the firebox.
3. Insert the appliance into the rough opening and secure with (4)
wood screws (included) through the holes in the nailing flanges.
4. Install decorative ember bed media (See Section 5.2 Page 18),
and re-install the front trim.
Figure 2.4, Nailing Flange Installation

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces ASSEMBLY AND INSTALLATION 15
2.7Wall mounted Installation
1. Select a location that is not prone to moisture and is located at least 36” (91.4cm) away from
combustible materials such as curtains, drapes, furniture, bedding, paper, etc.
2. Remove the front trim and glass (see “front trim &glass removal / installation” section).
3. Have two people hold the appliance against the wall to determine the final location.
4. Place the appliance face down on a soft, non-abrasive surface. Remove the bracket from the back of
the appliance by removing the screws (Figure. 2.5). Set the bracket aside and discard the screws.
5. Mark out location, then mount the bracket onto the wall using screws (supplied). This bracket MUST
have the hooks facing upwards and be level (Figure. 2.6).
6. With the wall mounting bracket installed, have two people lift the appliance up and insert the hooks
on the bracket into the slots on the back of the appliance (Figure. 2.7).
7. Check the appliance for stability, ensuring the bracket will not pull free from the wall.
Figure 2.5, Wall bracket Removal Figure 2.6, Wall bracket Installation
Due to the many different materials used on different walls, it is highly recommended that you consult your local builder before you install
this appliance on the wall.
It is strongly recommended that the mounting bracket be
screwed into the wall studs where possible. If the wall
studs cannot be used, ensure that the supplied plastic
anchors are used to affix the bracket to the wall and the
bracket is adequately secured.
note:
Figure 2.7, Wall Installation

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces FACING AND FINISHING 16
3.0 FACING AND FINISHING
3.1 Facing and Finishing Requirements
3.1.1 Mantel Requirements
WARNING: All minimum clearances to combustible material MUST be
maintained.
• Combustible Mantel Projections: As referenced in Figure 3.1,
the 2" (51mm) mantel can start at 2-7/8" (73mm) above the
top of the viewing opening. Mantel projections can increase 2"
(51mm) of depth for every 1" (25mm) of height starting at the 2"
(51mm) mantel.
3.1.2 Finishing Requirements
• This appliance is designed to accommodate nishing material up
to 5/8" (16mm) thick.
Figure 3.1, Mantel Clearances
Top of viewing opening
Each square represents
1” (25mm)
of mantel projection

17HARD WIRING INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
4.0 HARD WIRING INSTALLATION
4.1 Hard Wiring Connection
WARNING: Turn o the appliance completely and let cool before
servicing. Only a qualied service person should service and repair this
electric appliance.
NOTE: A dedicated 15 Amp (or higher) breaker is required.
If it is necessary to hard wire this appliance, a qualied electrician
must remove the cord connection and wire the appliance directly to
the household wiring.
This appliance must be electrically connected and grounded in
accordance with local codes if hard wired. In the absence of local
codes, use the current ANSI/NFPA 70 'National Electrical Code' in the
United States or the current CSA C22.1 'Canadian Electrical Code' in
Canada.
4.1.1 Hard Wiring Installation
Turn o power from circuit breaker before completing any of these
steps.
The wires are labeled by the yellow clips.
1. Remove the cover plate from the bottom of the right side of the
appliance secured by (3) screws, as shown in Figure 4.1.
2. Remove the wire connectors from the power cord as shown in
Figure 4.2. This power cord may be discarded.
3. Take the new cover plate supplied in the components packet
and knock out the 7/8" (22.2mm) hole.
4. Install the electrical grommet through the hole in the cover
plate. Feed wires through the electrical grommet.
5. Using the wire connectors, connect the green ground wires
together, and the neutral white and blue wires together, then
the hot black wires together. See Figure 4.2.
6. Re-install cover plate using (3) screws, as shown in Figure 4.1.
Figure 4.1, Cover Plate Removal
Figure 4.2, Remove Wire Connectors to Power Cord
Figure 4.3, Wiring through Electrical Grommet and Cover Plate
G
N
L
Electrical Grommet
7/8" (22.2mm)
Diameter

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces APPLIANCE SETUP 18
5.0 APPLIANCE SETUP
5.1 Glass Front Removal and Installation
1. Remove the front trim. See Section 2.5 Front Trim Removal and
Installation on page 13.
2. With one hand on the glass front to prevent it from falling,
remove the screws from the top right and left of the glass. Save
screws.
3. Carefully lift glass front up out of its channel and away from the
appliance. Place it face down on a soft, non-abrasive surface.
4. To reinstall glass front, insert the glass into its channel on the
bottom of the appliance. Hold glass in place and secure with
screws previously removed.
5. Reinstall front trim.
Figure 5.1, Glass Front Removal and Installation

19APPLIANCE SETUP Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #OSO-45-SL #OSO-60-SL R.1 August 2022
5.2 Media Installation
Please make the installation according to the ember media you have
purchased.
The appliance must be in its nal position before any media is installed.
5.2.1 River Rocks Installation
1. Remove the front trim. See Section 2.5 Front Trim Removal and
Installation on page 13.
2. Remove the glass front. See Section 5.1 Glass Front Removal
and Installation on page 17.
3. Carefully place the river rocks on the ember bed strip, as shown
in Figure 5.2., Apply an even layer the full width and depth of
the ember bed strip.
4. Reinstall glass front and front trim.
5.2.2 Decorative Crystals Installation
1. Remove the front trim. See Section 2.5 Front Trim Removal and
Installation on page 13.
2. Remove the glass front. See Section 5.1 Glass Front Removal and
Installation on page 17.
3. Carefully place the small crystals onto the ember bed strip, as
shown in Figure 5.3. Apply an even layer the full width and
depth of the ember bed strip.
4. Reinstall glass front and front trim.
Figure 5.3, Small Crystal Installation
Figure 5.2, Small River Rock Installation

#OSO-45-SL #OSO-60-SL R.1 August 2022 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces APPLIANCE SETUP 20