
HUSSONG MANUFACTURING CO., INC.
INSTALLATION AND
OPERATION MANUAL
ͷ Do not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this or any other appliance.
ͷ WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier,
call the re department.
ͷ Installation and service must be performed
by a qualied installer, service agency or
the gas supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
This appliance may be installed in
an aftermarket, permanently located,
manufactured home (USA only) or mobile
home, where not prohibited by local codes.
This appliance is only for use with the type
of gas indicated on the rating plate. This
appliance is not convertible for use with other
gases, unless a certied kit is used.
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
.
DANGER
HOT GLASS WILL
CAUSE BURNS
DO NOT TOUCH GLASS
UNTIL COOLED
NEVER ALLOW CHILDREN
TO TOUCH GLASS
A barrier designed to reduce the risk of burns
from the hot viewing glass is provided with this
appliance and shall be installed for the protection
of children and other at-risk individuals.
CHASKA 25
Model #CSK-25
Direct Vent Gas Fireplace Insert
Hussong Mfg. Co., Inc.
CSK-25 Report No: 18-453
Rev. 11, August 2020
Starting Serial Number: 20 054781 29


#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces 3
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: ______________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
Read this manual before installing or operating this appliance.
Please retain this owner’s manual for future reference.
Hussong Manufacturing welcomes you as a new owner of a Kozy Heat gas fireplace. Kozy Heat
products are designed with superi components and materials, assembled with care by trained
crasmen who take pride in their wk. To ensure you receive a quality product, the burner and valve
assembly are 100 percent test-fired, and the complete fireplace is thoughly inspected befe packaging.
Our commitment to quality and customer satisfaction has remained the same f over 40 years. We
oer a complete line of gas and wood fireplaces, along with stylish accessies to complement any dec.
Adding a fireplace is one of the best ways to increase the value of your home, and we are proud to oer
a netwk of dealers throughout the country to help make your experience everything you imagine. We
pride ourselves in being dedicated not only to functionality and reliability, but also customer safety.
We oer our continual suppt and guidance to help you achieve the maximum benet and enjoyment
om your Kozy Heat gas fireplace.
Jim Hussong
President
Dudley Hussong
Board Chairman
CON GRAT ULAT ION S!


#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces TABLE OF CONTENTS 5
TABLE OF CONTENTS
TABLE OF CONTENTS .....................................................................5
1.0 INTRODUCTION ......................................................................7
1.1 Appliance Certication ............................................................................. 7
1.2 California Proposition 65 Warning ........................................................ 7
1.3 Requirements for the Commonwealth of Massachusetts ............ 7
2.0 SPECIFICATIONS .....................................................................8
2.1 Heating Specications .............................................................................. 8
2.2 Electrical Specications ............................................................................ 8
2.3 Appliance Dimensions .............................................................................. 9
2.4 Part Assembly Overview .......................................................................... 10
2.5 Safety Barrier Dimensions ........................................................................ 11
3.0 EXISTING FIREPLACE REQUIREMENTS .................................12
3.1 Appliance Placement Considerations ................................................. 12
3.2 Existing Fireplace Specications ........................................................... 12
4.0 TERMINATION LOCATION ...................................................... 13
4.1 Chimney Vent Termination Clearances ............................................... 13
4.2 Co-linear to Co-axial Vent Terminations .............................................13
5.0 INSTALLATION PREPARATION ...............................................14
5.1 Inspect and Clean Existing Chimney ................................................... 14
5.2 Flue Damper ................................................................................................. 14
5.3 Gas Line .......................................................................................................... 14
5.4 Electrical Wiring ........................................................................................... 14
5.5 Fireplace Conversion ................................................................................ 14
6.0 INSTALLATION ........................................................................15
6.1 Approved Vent Systems ............................................................................ 15
6.2 Kozy Heat #816 and #816-CAP Installation ....................................... 15
6.3 Co-linear to Co-axial Combined Venting ............................................ 16
6.6 Remove Vent Adapter ............................................................................... 17
6.4 Run Vent System.......................................................................................... 17
6.7 Place and Secure Appliance ....................................................................18
6.5 Connect Vent Pipe to Vent Adapter ...................................................... 18
6.8 Outdoor Covered Fireplace Installation .............................................. 19
7.0 GAS LINE CONNECTION .........................................................21
7.1 Gas Conversion (sold separately) .......................................................... 21
7.2 Gas Line Installation ................................................................................... 21
8.0 FACING AND FINISHING .........................................................22
8.1 Facing and Finishing Requirements ..................................................... 22
8.2 Shroud Installation ..................................................................................... 24
8.3 Upper Louver and Lower Louver Installation ................................... 24
9.0 GAS FIREPLACE INSTALLATION ............................................25
9.1 Glass Assembly ............................................................................................ 25
9.2 #CXS-500 Log Set Installation ................................................................ 26
9.3 Control Board Removal and Installation ............................................. 27
10.0 ELECTRICAL INFORMATION ................................................ 28
10.1 Electrical Specications .......................................................................... 28
10.2 Wiring Requirements .............................................................................. 28
11.0 OPERATING INSTRUCTIONS ................................................ 29
11.1 Setup Proame 2 IFC Module .............................................................. 30
11.2 Initialize the Control System................................................................. 30
11.3 Reset the System for Manual Operation .......................................... 30
11.4 Automatic Safety Restart ....................................................................... 30
11.5 Backup Battery Operation .................................................................... 30
11.6 Control System 7 Day Timeout ............................................................ 30
11.7 IFC Module Ignition Sequence ............................................................ 31
11.8 Additional Diagnostic Information .................................................... 31
11.9 Remote Control Operation .................................................................. 32
12.0 ADJUSTMENT ........................................................................35
12.1 Pressure Testing ........................................................................................ 35
12.2 Burner Flame Adjustments ................................................................... 36
13.0 TROUBLESHOOTING.............................................................37
14.0 MAINTENANCE......................................................................39
14.1 Firebox .......................................................................................................... 39
14.2 Fan ................................................................................................................. 39
14.3 Vent System ................................................................................................ 39
14.4 Glass Assembly .......................................................................................... 39
14.5 Burner and Pilot System ........................................................................ 40
15.0 REPLACEMENT PARTS LIST..................................................41
LIMITED LIFETIME WARRANTY ....................................................42


#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INTRODUCTION 7
1.0 INTRODUCTION
1.1 Appliance Certication
Laboratory: PFS in Cottage Grove, Wisconsin
Standards:
ANSI Z21.88-2017/CSA 2.33-2017, Vented Gas Fireplace Heaters
CSA 2.17 - 2017, Gas-Fired Appliances for Use at High Altitudes
This installation must conform with local codes, or in the absence of
local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or
the Natural Gas and Propane Installation Code, CSA B149.1.
1.2 California Proposition 65 Warning
WARNING: This product can expose you to chemicals including
Carbon Monoxide, that is an externally vented by-product of fuel
combustion, which is [are] known to the State of California to
cause cancer, birth defects or other reproductive harm. For more
information, visit www.P65Warnings.ca.gov.
1.3 Requirements for the
Commonwealth of Massachusetts
The following requirements reference various Massachusetts and
national codes not contained in this manual.
For all sidewall horizontally vented gas fueled equipment installed
in every dwelling, building or structure used in whole or in part for
residential purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent termination
is less than (7) feet above nished grade in the area of the venting,
including but not limited to decks and porches, the following
requirements shall be satised:
1.3.1 Installation of Carbon Monoxide Detectors
At time of installation of side wall horizontally vented gas fueled
equipment, the installing plumber or gas-tter shall observe that
a hard wired carbon monoxide detector with an alarm and battery
back-up is installed on the oor level where the gas equipment is
to be installed. In addition, the installing plumber or gas-tter shall
observe that a battery operated or hard wired carbon monoxide
detector is installed on each additional level of the dwelling, building
or structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner
to secure the services of qualied licensed professionals for the
installation of hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled
equipment is installed in a crawl space or attic, the hard wired carbon
monoxide detector with alarm and battery back-up may be installed
on the next adjacent oor level. In the event that the requirements
of this subdivision can not be met at the time of completion of
installation, the owner shall have a period of thirty (30) days to
comply with the above requirements; provided, however, that during
said thirty (30) day period, a battery operated carbon monoxide
detector with an alarm shall be installed.
1.3.2 Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance with the
above provisions shall comply with NFPA 720 and be ANSI/UL 2034
listed and IAS certied.
1.3.3 Signage
A metal or plastic identication plate shall be permanently mounted
to the exterior of the building at a minimum of eight (8) feet
above grade directly in line with the exhaust vent terminal for the
horizontally vented gas fueled heating appliance or equipment. The
sign shall read, in print no less the one-half inch (½) in size, “GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.
1.3.4 Inspection
The state or local gas inspector of the side wall horizontally vented
gas fueled equipment shall not approve the installation unless, upon
inspection, the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of 248 CMR 5.08
(2) (a) 1 through 4.
1.3.5 Exemptions
The following equipment is exempt from 248 CMR 5.08 (2) (a) 1
through 4: The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition of NFPA 54 as
adopted by the Board; and Product Approved side wall horizontally
vented gas fueled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or in part for
residential purposes.
1.3.6 Manufacturer Requirements
1.3.6.1 Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall horizontally
vented gas equipment provides a venting system design or venting
system components with the equipment, the instructions provided
by the manufacturer for installation of the equipment and the
venting system shall include:
• Detailed instructions for the installation of the venting system
design or the venting system components; and
• A complete parts list for the venting system design or venting
system.
1.3.7 Gas Equipment Venting
System NOT Provided
When the manufacturer of Product Approved side wall horizontally
vented gas equipment does not provide the parts for venting the
ue gases, but identies “special venting systems”, the following
requirements shall be satised by the manufacturer:
• The referenced “special venting systems” instructions shall
be included with the appliance or equipment installation
instructions and;
• The “special venting systems” shall be Product Approved by the
Board, and the instructions for that system shall include a parts
list and detailed installation instructions.
A copy of all installation instructions for all Product Approved
side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all venting
design instructions shall remain with the appliance or equipment at
the completion of the installation.

8 SPECIFICATIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
2.0 SPECIFICATIONS
2.1 Heating Specications
Natural Gas Propane
Maximum
Input Rating
26,000 Btu/h
7.62 kW
25,500 Btu/h
7.47 kW
Minimum
Input Rating
13,500 Btu/h
3.96 kW
13,000 Btu/h
3.81 kW
Manifold Pressure
(High)
3.8” WC
(0.95 kPa)
11” WC
(2.74 kPa)
Manifold Pressure
(Low)
1.1” WC
(0.27 kPa)
2.9” WC
(0.72 kPa)
Orice Size (DMS) #44 #54
2.1.1 Altitude Adjustment
This appliance may be installed at higher altitudes. Please refer to
National Fuel Gas Code ANSI Z223.1/NFPA 54, CSA-B149.1 Natural
Gas and Propane Installation Code, local authorities, or codes having
jurisdiction in you area regarding derate guidelines.
2.1.1.1 US Installations
Refer to the American Gas Association guidelines for the gas designed
appliances derating method. For elevations above 2,000’ (610m),
input ratings are to be reduced by 4% for each 1,000’ (305m) above
sea level.
2.1.1.2 Canadian Installations
When the appliance is installed at elevations above 4,500’ (1,372m),
the certied high altitude rating shall be reduced at the rate of 4% for
each additional 1,000’ (305m).
2.2 Electrical Specications
• The junction box in this appliance requires 120VAC, 60Hz, and 6
Amps.
• Verify the household breaker is shut o prior to working on any
electrical lines.
• The AC power supply to this appliance must be hot at all times
and shall not have a switch installed in it.

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces SPECIFICATIONS 9
2.3 Appliance Dimensions
Figure 2.1, Appliance Dimensions
LEFT SIDE FRONT VIEW RIGHT SIDE
TOP VIEW
PREFERRED
GAS LINE HOLE
ALTERNATE
GAS LINE HOLE

10 SPECIFICATIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
2.4 Part Assembly Overview
WARNING: Failure to position these parts in accordance with these
diagrams, or failure to use only specied approved parts with this
appliance, may result in property damage or personal injury.
Figure 2.2, Proper Positioning of Appliance
Table 2.1, Field-Assembled Parts
A Fireplace insert E Control board assembly
B Glass frame assembly F Co-linear Vent Adapter
C Burner heat shield and burner assembly G Fan Kit
D Secondary Heat shield
B
C
D
E
A
F
G

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces SPECIFICATIONS 11
2.5 Safety Barrier Dimensions
WARNING: A barrier designed to reduce the risk of burns from the hot
viewing glass is provided with this appliance and shall be installed for
the protection of children and other at-risk individuals.
If the barrier becomes damaged, the barrier shall be replaced with
Hussong Mfg.’s barriers for this appliance.
IMPORTANT: Consider the height of hearth nish material when
building a replace platform. Proper installation of safety barriers
require the bottom of the replace to be level with nished hearth.
2.5.1 Safety Barrier Installation
1. Locate the (4) slots on the glass frame (2 each side).
2. Align the tabs located on the back of the safety barrier with the
slots on the glass frame.
3. Raise the safety barrier slightly into the slots and allow the tabs
to lower into position.
• To remove safety screen: lift the screen up and out of slots.
18½”
(469mm)
27
¼”
(692mm)
20
3⁄8”
(518mm)
17
9⁄16”
(446mm)
265⁄16”
(669mm)
193⁄8”
(492mm)
18½”
(469mm)
27¼”
(692mm)
18½”
(469mm)
27¼”
(692mm)
18½”
(469mm)
27¼”
(692mm)
18
½”
(469mm)
27
¼”
(692mm)
20
3⁄8”
(518mm)

12 EXISTING FIREPLACE REQUIREMENTS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
3.0 EXISTING FIREPLACE REQUIREMENTS
3.1 Appliance Placement Considerations
WARNING: Due to high surface temperatures, the replace insert
should be located out of trac and away from furniture and draperies.
• This replace must be installed on a level surface capable of
supporting the replace insert and venting.
• This replace insert may be installed in a bedroom.
• Please be aware of the large amount of heat this replace insert
will produce when determining a location.
3.2 Existing Fireplace Specications
IMPORTANT: Adequate accessibility clearances for servicing and
proper operation must be maintained.
• Any smoke shelves, shields, and baes may be removed if
attached by mechanical fasteners. If necessary, remove rebrick
to obtain at least the minimum opening requirements.
• Cutting of any sheet metal parts of the existing replace is
prohibited.
• A gas line must be able to be installed to the replace insert.
Please refer to Figure 2.1 on page 9. The preferred gas line
access hole is located on the right side of the insert.
• If the metal oor is removed, the insert must be placed directly
on metal base of metal replace.
• Mechanically attach ‘THIS UNIT HAS BEEN MODIFIED’ label at
bottom of existing rebox so it will be visible if this gas replace
insert is removed.
3.2.1.1 Existing Fireplace Opening
Minimum Requirements
See gure below.
(A) Height .......................................................................... 17-5/8“ (454mm)
(B) Front Width .................................................................25-7/8” (657mm)
(C) Depth ............................................................................15-1/4” (387mm)
(D) Back Width ..................................................................20-5/8” (530mm)
3.2.1 Chimney Specications
WARNING: Any chimney clean-outs must t properly.
This replace insert is to be installed into a solid fuel masonry or
factory built non-combustible replace that has been installed in
accordance with the national, provincial, state, and local building
codes.
The existing chimney must be comprised of one of the following:
• Factory-built solid fuel chimney: 7” (178mm) minimum inside
diameter
• Masonry chimney: 6” x 8” (152mm x 203mm) minimum inside
diameter
Existing chimney height:
• Minimum: 10’ (3.0m) Maximum: 35’ (10.67m)
In certain circumstances where a chimney no longer terminates
through the roof line, a co-linear to co-axial adapter may be installed
where the existing chimney ends. After the adapter, the co-axial pipe
must maintain 1” (25mm) clearance to combustibles on all sides of the
vent pipe. Refer to Sections 4.2 (pg. 13) and 6.3 (pg. 16) for other
co-linear to co-axial conversion considerations and requirements.
3.2.1.1 Determine Length of Existing Chimney
1. Remove and discard existing chimney cap.
2. NOTE: It is helpful to have two people complete this step.
Position one person at the replace opening and another person
at the top of the chimney.
3. Measure from the replace base to the top of the chimney.
4. Subtract the height of the insert from the previous
measurement.
5. This is the total length of the co-linear exible aluminum pipe
required for your installation. If using Kozy Heat #816, cut to
length.
Figure 3.1, Existing Opening Guide
Figure 3.2, Min/Max Chimney Length
C
A
B
D
MIN: 10 ft (3.05m)
MAX: 35 ft (10.67m)

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces TERMINATION LOCATION 13
4.0 TERMINATION LOCATION
4.1 Chimney Vent Termination Clearances
WARNING: This appliance must not share or be connected to a chimney
ue serving any other appliance.
• Approved vent caps require 12” (305mm) clearance to
intersecting walls, overhangs or eaves as veried by test.
Figure 4.1, 3” x 3” Vent Cap Clearance through Existing Chimney
4.2 Co-linear to Co-axial Vent Terminations
WARNING: This appliance must not share or be connected to a chimney
ue serving any other appliance.
When combining co-linear and co-axial venting in a single venting
system using an approved 4” x 6-5/8” adapter, use Figure 4.2, Figure
4.3, and Table 4.1 for proper termination clearances.
Approved
Vent Cap
Minimum
12”
(305mm)
Clearance
Approved
Vent Cap
Approved 4” x 6
5⁄8”
Co-axial Vent Pipe
Lowest Discharge
Opening
H - Minimum Height from Roof to
Lowest Discharge Opening
Minimum
12” (305mm)
Co-linear to Co-axial Vent Adapter
Masonry Chimney
3” x 3” Flex Pipe
Roof Pitch = x/12
12
x
H
Clearance between two vertical terminations for US and Canadian installations
(may be same height)
12”
(305mm)
Figure 4.2, Clearance between two Vertical Terminations
Figure 4.3, Co-linear to Co-axial Vertical Termination Clearances
Table 4.1, Minimum Vertical Termination Height (use with Figure 4.3)
Minimum height (H) from roof
Roof Pitch Feet Meters
Flat to 6/12 1.0 0.30
Over 6/12 to 7/12 1.25 0.38
Over 7/12 to 8/12 1.5 0.46
Over 8/12 to 9/12 2.0 0.61
Over 9/12 to 10/12 2.5 0.76
Over 10/12 to 11/12 3.25 0.99
Over 11/12 to 12/12 4.0 1.22
Over 12/12 to 14/12 5.0 1.52
Over 14/12 to 16/12 6.0 1.83
Over 16/12 to 18/12 7.0 2.13
Over 18/12 to 20/12 7.5 2.27
Over 20/12 to 21/12 8.0 2.44

14 INSTALLATION PREPARATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
5.0 INSTALLATION PREPARATION
NOTE: This gas replace insert is approved for installation in masonry
and factory-built solid fuel burning replaces.
ATTENTION: Any removed parts must be capable of re-installation if
this insert is ever removed. Removal of rivets or screws is acceptable.
5.1 Inspect and Clean Existing Chimney
• Verify existing chimney is constructed of non-combustible
material.
• Verify existing chimney is clean and in good working order. Clean
existing chimney and replace to prevent a creosote odor from
entering the home.
• Verify combustible mantel and sidewall clearances comply with
Section 8.0 on page 22.
• The refractory, glass doors, screen rails, screen mesh, and log
grates may be removed from existing replace before installing
this gas replace insert.
5.2 Flue Damper
• The replace ue damper can be fully blocked open, or removed
for installation of this gas replace insert. Remove existing
chimney cap.
5.3 Gas Line
• A gas line must be able to be installed to the insert.
• If the factory-built replace has no gas access hole(s) provided,
an access hole of 1½” (37.5mm) or less may be drilled
through the lower sides or bottom of the rebox in a proper
workmanship like manner. The access hole must be plugged
with non-combustible insulation after the gas supply line has
been installed.
• Run gas line to the gas replace insert through the gas line holes
provided. The preferred gas access hole is located on the right
side of the unit. Do not run gas line in a manner that would
obstruct fan operation.
• If the gas replace insert is to be installed into minimum opening
dimensions, the gas line may need to be run after appliance
placement due to space limitations.
5.4 Electrical Wiring
• Provisions must be made to provide electrical power for
appliance operation.
• The electrical outlet box is located on the back of the insert. Run
any necessary electrical wiring to the gas replace insert.
5.5 Fireplace Conversion
• Mechanically attach the label with the following warning to at
the bottom existing rebox so it will be visible if this gas replace
insert is removed.
WARNING: This replace has been converted for use with a gas replace
insert only and cannot be used for burning wood or solid fuels unless
all original parts have been replaced, and the replace re-approved by
the Authority Having Jurisdiction.

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION 15
6.0 INSTALLATION
6.1 Approved Vent Systems
Kozy Heat #816 and #816-CAP
For use with minimum 6” x 8” I.D. masonry or 7” I.D. Class A metal
chimneys; includes one roll of 36’ (10.97m) of expandable 3” exible pipe
and round termination cap.
Other approved vent manufacturers
BDM, American Metals (Amerivent), Metal Fab, Selkirk, Simpson Dura-
Vent, and ICC.
This appliance is approved to combine co-linear and co-axial venting
in a single venting system using an approved 4” x 6-5/8” adapter.
Chimney specications (Section 3.2.1 on page 12) must be adhere
to when converting to co-linear to co-axial vent system. See section
Section 6.3 Co-linear to Co-axial Combined Venting on page 16
6.2 Kozy Heat #816 and #816-
CAP Installation
IMPORTANT: Proper operation of this insert requires the exhaust pipe
and combustion air pipe to be connected to their correct ue collar, on
both the termination kit and the gas replace insert vent adapter.
The replace insert exhaust ue collar is located on the right side.
Install termination cap with the exhaust ue collar on the right side.
NOTE: The exhaust pipe will have a red marking.
IMPORTANT: Maximum horizontal vent runs of 24” (609mm) require
a 1” (25mm) rise per 12” (305mm) run. Care should be taken when
installing the exible vent pipes to avoid a tight bend that may cause
abrasion or damage to the exible pipes.
1. Measure the total chimney length required and cut #816 (36’
[10.97m] of 3” exible pipe) to the measured length.
2. Carefully extend the exhaust and combustion air intake pipes to
total chimney length required.
3. Slide the combustion air intake pipe (the end without a collar)
over termination cap collar (A). Secure to #816-CAP termination
cap (E) with (3) self-tapping screws (not provided).
4. Place a bead of sealant around the inner edge at the end of the
exhaust pipe (without collar / red marking) and slide onto the
corresponding labeled collar (B) on termination cap (E).
5. Secure the exhaust pipe to termination cap (E) with (3) self-
tapping screws (not provided). Apply additional sealant around
joint to ensure a proper seal.
6. Complete vent system installation by following the instructions
outlined in Sections 6.3 through 6.5.
COMBUSTION AIR
INTAKE 3” FLEX LINER
EXHAUST VENT
3” FLEX LINER
USES #816 36 ft (10.97m) EXPANDABLE 3” FLEXIBLE PIPE
C
A
B
D
C
#816 and #816-CAP
(A) Intake Collar (extends
through bottom plate)
(B) Exhaust Collar (extends
through middle divider
plate)
(C) Sealant (not provided)
(D) #816-CAP Termination Cap
VENT ADAPTER (TOP VIEW)
COMBUSTION AIR
INTAKE COLLAR (LEFT)
EXHAUST COLLAR (RIGHT)
Figure 6.1, #816-CAP

16 INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
6.3 Co-linear to Co-axial
Combined Venting
IMPORTANT: Maximum horizontal vent runs of 24” (609mm) require
a 1” (25mm) rise per 12” (305mm) run. Care should be taken when
installing the exible vent pipes to avoid a tight bend that may cause
abrasion or damage to the exible pipes.
After the co-linear to co-axial vent adapter, the co-axial pipe requires
a minimum of 1” (25mm) clearance to combustibles on all sides of the
rigid pipe.
• Maximum horizontal run of 3” x 3” exible pipe length: 24”
(610mm)
• Minimum total combination of co-linear and co-axial vent pipe:
10’ (3.05m)
• Maximum total combination of co-linear and co-axial vent pipe:
50’ (15.24m)
MAX HORIZONTAL RUN OF
3” x 3“ FLEX PIPE: 24” (610mm)
CO-LINEAR TO CO-AXIAL
VENT ADAPTER
4” x 6-5/8”
CO-AXIAL VENTING
TERMINATION
CAP
Figure 6.2, Co-linear to Co-axial Venting (your appliance may look dierent than shown)

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION 17
6.4 Run Vent System
NOTE: If osets are present in existing chimney, place a weighted rope
around the pipe ends to guide them through the chimney. DO NOT
ATTEMPT TO TIE ONE ROPE AROUND BOTH PIPES.
• To prevent cold air drafts, Hussong Manufacturing recommends
to insulate the 3” x 3” exible vent pipes and chimney using
unfaced insulation products listed as noncombustible per ASTM
E 136.
1. OPTIONAL: Before installing vent system down through the
chimney, place unfaced insulation around the rst 3’ (914mm) of
vent system below termination cap. Secure with wire.
2. Install the 3” x 3” exible pipes down through existing chimney.
Guide ropes (if used) to aid installation.
3. To secure chimney termination cap to chimney, apply a liberal
bead of sealant (provided) around the top of the chimney. Set
termination cap into position as instructed by vent system
manufacturer’s installation manual.
OPTIONAL Kozy Heat #816-CAP: Secure termination cap to
existing chimney with 2” (50mm) self-tapping screws and anchor
straps (not provided) through the pilot holes, located on the
sides of the termination cap.
4. From inside the existing replace, carefully pull ropes (if used) or
the exible pipes down until both exhaust pipe and combustion
air intake are into the existing replace rebox.
5. OPTIONAL: To prevent heat loss up chimney, place unfaced
insulation products listed as non-combustible per ASTM E 136
between the 3” x 3” exible vent pipes and chimney.
Figure 6.4, Chimney Vent Run
6.6 Remove Vent Adapter
ATTENTION: All information outlined in Section 5.0 on page 14 must
be completed before continuing with this installation.
1. Remove the vent adapter at the top of appliance by sliding
the vent adapter back out of channels. Refer to the following
instructions for vent system attachment to the vent adapter.
Figure 6.3, Vent Adapter Removal

18 INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
6.5 Connect Vent Pipe to Vent Adapter
IMPORTANT: Proper operation of this insert requires the exhaust pipe
and combustion air pipe to be connected to their correct ue collar, on
both the termination kit and the gas replace insert vent adapter.
1. Place previously removed vent adapter into existing replace
opening.
2. Connect exhaust vent pipe (red marking) to exhaust collar
on vent adapter. Apply a bead of sealant (provided) around
exhaust pipe and slide inside collar marked ‘Exhaust.’ Secure with
provided (3) ½” (13mm) self-tapping screws. Apply additional
sealant around join to ensure an air tight seal.
3. Connect air intake vent pipe to intake collar on vent adapter.
Apply a liberal bead of sealant around intake collar on vent
adapter. Slide combustion intake pipe over the collar and
secure with provided (3) ½” (13mm) self-tapping screws. Apply
additional sealant around joint to ensure an air tight seal.
4. Visually check vent pipe connection to vent adapter.
6.7 Place and Secure Appliance
1. Slide the gas replace insert into existing replace opening until
the channels on top of the appliance are aligned with the vent
adapter.
2. Insert the vent adapter pull rod handle through access slot at
the top of appliance and place pull handle hook through the
hole in pull rod. Simultaneously push the gas insert into existing
replace and pull the vent adapter forward until seated.
3. Secure vent adapter to appliance by using slots at the top of
the appliance to secure with (2) ½” (13mm) sheet metal screws
(included in components packet).
4. Use the pull rod handle to pull the vent adapter back to starting
position. Remove pull handle. Verify vent system connection.
5. If necessary, level the gas insert by threading leveling bolts
(included in components packet) into nuts at the bottom of the
insert (2 each side). Verify appliance is properly positioned.
ALIGNED
GAS INSERT
VENT
ADAPTER
FLEXIBLE PIPES
SHEET METAL
SCREWS (3 TOTAL)
SEALANT
SEALANT
Figure 6.5, Aligned Insert
Figure 6.6, Vent Pipe Connection to Vent Adapter

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION 19
6.8 Outdoor Covered Fireplace Installation
An outdoor covered replace installation allows a replace to be
installed in an outdoor covered area, where the appliance is protected
from direct precipitation.
Follow the instructions and illustrations for installation procedures.
Drawings are for reference only and your replace may look dierent
than shown.
6.8.1 Safety Screen Barriers
Hussong Mfg. highly recommends to use black painted safety barriers
in outdoor installations. Other screen barriers that incorporate
a plated or patina nish are highly susceptible to oxidation and
discoloration.
6.8.2 Requirements
• The continuous insulated building envelope and weatherproof
membrane are not to be interrupted by replace installation. See
Figure 6.8 on the following page.
• Fireplace operation is approved from 40°F to 110°F.
• All wiring connections shall be in accordance with outdoor
requirements of NECA NFPA 70.
• All clearances and requirements in your appliance manual must
be adhered to.
FRONT OF
FIREPLACE
A
B
CC
The width of the overhang to each side of the
appliance (C) must be a minimum of 1/2 or
greater of the roofline elevation (B) above the
base of the fireplace.
The overhang (A) must be a minimum of 1/2 or
greater of the roofline elevation (B) above the base
of the fireplace.
EXAMPLE: If roofline (B) is 10 ft above the base of fireplace, the overhang (A) must be 5 ft
or greater. The width of the overhang to EACH side of the fireplace (C) must be 5 ft or greater.
Figure 6.7, Outdoor Covered Fireplace Installation

20 INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
6.8.3 Outdoor Covered Fireplace Installation (continued)
Figure 6.8, Outdoor Covered Installation 2
Continuous insulated building
envelope and weatherproof
membrane are not interrupted by
replace installation
Minimum weatherproof
overhang in front and sides
Free standing structure
(weatherproof enclosure)
Minimum weatherproof
overhang in front and sides
Minimum weatherproof
overhang in front and sides
Minimum weatherproof
overhang in front and sides
INSIDE
OUTSIDE
INSIDE

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces GAS LINE CONNECTION 21
7.0 GAS LINE CONNECTION
7.1 Gas Conversion (sold separately)
ATTENTION: The conversion shall be carried out in accordance with the
requirements of the provincial authorities having jurisdiction and in
accordance with the requirements of the ANSI Z223.1 installation code.
This replace is manufactured for use with natural gas. Follow the
instructions included with the conversion kit if converting to Propane.
7.2 Gas Line Installation
CAUTION: Installation of the gas line must only be done by a qualied
person in accordance with local building codes, if any. If not, follow
ANSI 223.1. Commonwealth of Massachusetts installations must be
done by a licensed plumber or gas tter.
NOTE: The appliance and its individual shuto valve must be
disconnected from the gas supply piping system during any pressure
testing of that system at pressures in excess of ½ psi (3.5 kPa). For test
pressures equal to or less than ½ psi (3.5 kPa), the appliance must be
isolated from the gas supply piping system by closing its individual
manual shut-o valve.
• A listed (and Commonwealth of Massachusetts approved)
½” (13mm) tee handle manual shut-o valve and exible gas
connector are to be connected to the ½” (13mm) control valve
inlet. If substituting for these components, please consult local
codes for compliance.
• If installing this insert into minimum opening dimensions,
the gas line may need to be run after placement due to space
limitations. See Section 3.2 Existing Fireplace Specications on
page 12.
• This replace is equipped with a 3/8” (10mm) x 18” (457mm) long
exible gas connector and manual shut-o valve.
• Run gas line into replace, preferably through right gas line hole
provided. The gas line should be run to the point of connection
where the shut-o valve and exible gas line will connect.
• Do not run gas line in a manner that would obstruct fan
operation.
• For high altitude installations, consult the local gas distributor or
the authority having jurisdiction for proper rating methods.
Table 7.1, Inlet Gas Supply Pressures
Fuel Minimum Pressure Maximum Pressure
Natural Gas 5” WC (1.25 kPa)
7” WC (1.74 kPa )
recommended
10.5” WC (2.62 kPa)
Propane 12” WC (2.99 kPa)
recommended
13” WC (3.24 kPa)

22 FACING AND FINISHING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
8.0 FACING AND FINISHING
8.1 Facing and Finishing Requirements
IMPORTANT: Adequate accessibility clearances for servicing and
proper operation must be maintained.
8.1.1 Adjacent Sidewall Requirements
• The adjacent sidewall minimum clearance is 3” (76mm) from the
appliance sides (Fig 8.1).
8.1.2 Clearance to Ceiling
• As shown in Figure 8.2, the minimum clearance from the
replace enclosure oor to the ceiling is 55” (1.04m).
8.1.3 Mantel Requirements
WARNING: All minimum clearances to combustible material MUST be
maintained.
• Combustible Mantel Projections - As referenced in Figure 8.2, the
9” (229mm) mantel can start at 9” (229mm) above the top of the
appliance. Mantel projections can increase 1” (25mm) of depth
for every 1” (25mm) of height starting at the 9” (229mm) mantel.
8.1.4 Hearth Requirements
See Figure 8.2 for more information.
• If the appliance is raised 2-1/2” (64mm) o of the oor,
combustible ooring in front of the unit may be constructed in
front of the unit. If you plan to construct combustible ooring
closer to the unit than 2-1/2”, use non-combustible material as
outlined in Figure 8.2.

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces FACING AND FINISHING 23
COMBUSTIBLE
MATERIAL
3”
(76mm)
Figure 8.1, Clearance to Sidewall
Figure 8.2, Mantel and Hearth Requirements

24 FACING AND FINISHING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
8.2 Shroud Installation
CAUTION: Trim panels or surrounds must not seal ventilation
openings in existing replace that this appliance is installed in.
Draft relief openings must not be covered or blocked.
WARNING: The ow of combustion and ventilation air must not be
obstructed.
1. Remove glass frame assembly.
2. Align leg section holes on the shroud to the corresponding
mounting nuts in mounting brackets on each side of the insert
metal cabinet.
3. Secure with (4) phillips truss head screws (provided).
4. Reinstall glass frame assembly.
Figure 8.3, Aligned Mounting Nuts and Brackets
8.3 Upper Louver and Lower
Louver Installation
8.3.1 Upper Louver Installation
1. Align the tabs in the upper louver with the corresponding slots
in the mounting ange located in the top air space.
2. Push the upper louver back into position.
8.3.2 Lower Louver
1. Align the tabs in the lower louver to the corresponding slots in
the mounting brackets located in the bottom airspace.
2. Set louver down into position.
UPPER LOUVER
LOWER LOUVER
Figure 8.4, Upper Louver and Lower Louver Installation

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces GAS FIREPLACE INSTALLATION 25
9.0 GAS FIREPLACE INSTALLATION
9.1 Glass Assembly
WARNING: Do not operate this replace with the glass removed,
cracked, or broken. Replacement of the glass assembly should be done
by a licensed or qualied service person.
9.1.1 Remove Glass Assembly
WARNING: Do not remove the glass assembly when hot.
1. Remove safety barrier.
2. Locate (2) spring-loaded latches securing the glass assembly at
the bottom of the rebox.
3. Pull the spring-loaded latches out and down to release the
bottom of the glass assembly.
4. Lift glass assembly up and o of the (2) tabs located at the top of
the rebox.
9.1.2 Install Glass Assembly
1. Align the slots on top of the glass assembly over the tabs at
the top of the rebox while lowering the bottom of the glass
assembly into position.
2. Pull the spring-loaded latches out and up to secure the bottom
of glass to the bottom of the replace.
3. Reinstall safety barrier.

26 GAS FIREPLACE INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
9.2 #CXS-500 Log Set Installation
CAUTION: Do not place logs directly over burner port holes. Improper
log placement may aect ame appearance and may cause excessive
soot to build upon the glass.
• If converting to propane, complete the conversion before
installing the log set. Follow the conversion instructions included
with the kit.
• Log numbers located on the bottom of each log. Refer to
following instructions and illustrations for proper placement.
1. Position the cut out on log CS1 over the pilot shield.
2. Align the holes in the bottom of base logs CS2-CS4 with the
corresponding mounting pins on the burner. Push to seat.
3. Randomly place lava rock in front of the burner. Do not place
directly over burner ports.
4. Use a sti or steel bristle brush to distribute rockwool embers
onto the burner and logs.
Figure 9.1, Installation of #CXS-500 with Part Numbers
Figure 9.2, Center View of Log Set

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces GAS FIREPLACE INSTALLATION 27
9.3 Control Board Removal and Installation
WARNING: If burner and/or pilot have been burning, use appropriate
protection to avoid burns or damage to personal property before
removing any components. DO NOT OPERATE THIS APPLIANCE
WITHOUT THE SEALING GASKET (LOCATED UNDER THE CONTROL
BOARD) IN PLACE. IF GASKETING IS DAMAGED, IT MUST BE REPLACED.
CAUTION: Check all connections for leaks with soapy water, whether
eld or factory made.
9.3.1 Control Board Removal
1. Disconnect electrical power.
2. Locate the manual valve installed by your qualied service
technician.
3. Turn the manual valve clockwise to the OFF position.
4. Remove safety barrier and glass frame assembly.
5. Remove the log set.
6. Remove burner assembly (2) screws..
7. Remove side log mounting stands/refractory clips and refractory
panels.
8. Remove burner heat shield (2) screws located at the back corners
of the rebox.
9. Remove the secondary burner heat shield resting on the control
board.
10. Remove (10) screws securing the control board on the left side of
the rebox.
9.3.2 Control Board Installation
1. Place the control board in rebox, aligning the holes in the board
with the mounting studs at the bottom of the rebox. VERIFY
SEALING GASKET IS IN PLACE ON THE BOTTOM OF THE FIREBOX.
2. Secure the control board with screws previously removed.
3. Reinstall secondary burner heat shield by placing it on top of the
control board.
4. Reinstall burner heat shield. Position the cut-outs over pilot
assembly and burner orice, centering from side-to-side and as
far back as possible. Secure with (2) screws previously removed.
5. Reinstall refractory panels. Secure with log mounting stands/
refractory clips previously removed.
6. Reinstall burner assembly. Position burner venturi over the
burner orice and secure with screws previously removed.
7. Reinstall log set.
8. Turn the manual valve counter-clockwise to the ON position.
9. Reconnect electrical power.
10. Reinstall the glass frame assembly and safety barrier.
11. Verify proper log placement, operation of replace, and any
electrical components.
ON
OFF
Figure 9.3, Control Board Removal and Installation
REMOVE BURNER HEAT SHIELD (2) SCREWS AT BACK OF FIREBOX
REMOVE SIDE LOG MOUNTING PLATES/REFRACTORY CLIPS
BURNER ASSEMBLY
BURNER HEAT SHIELD
SECONDARY HEAT SHIELD
CONTROL
BOARD
REMOVE CONTROL BOARD (10) SCREWS

28 ELECTRICAL INFORMATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
10.0 ELECTRICAL INFORMATION
WARNING: Do not use this replace if any part has been under water.
Immediately call a qualied service technician to inspect this appliance
and to replace any part of the control system and any gas control which
has been under water.
WARNING - Electrical Grounding Instructions: This appliance is
equipped with a three-prong (grounding) plug for your protection
against shock hazard and should be plugged directly into a properly
grounded three-prong receptacle. Do not cut or remove the grounding
prong from this plug.
10.1 Electrical Specications
This appliance, when installed, must be electrically grounded in
accordance with local codes, or in the absence of local codes, with
the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
10.2 Wiring Requirements
• The IFC System Module requires 120V of electricity and/or
batteries to operate.
• Using the battery back-up will operate the burner only.
• Fan and light components will not function on battery back up
power.
MALE END
VARIABLE
SPEED FAN
VARIABLE
LIGHT
APPLIANCE
GROUND STAR
BATTERY
PACK
885 PROFLAME
MAIN ON/OFF
SWITCH
PILOT
PILOT
BURNER
FLAME
SENSOR
IGNITER
SW1 BUTTON (RED)
Figure 10.1, Wiring Schematic

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces OPERATING INSTRUCTIONS 29
11.0 OPERATING INSTRUCTIONS
WARNING
Do not operate appliance with the glass front removed, cracked, or
broken. Replacement of the glass should be done by a licensed or
qualied service person.
Under no circumstances should any solid fuel (wood, coal, paper,
cardboard, etc.) be used in this appliance.
Children and adults should be alerted to the hazards of high surface
temperature and should stay away to avoid burns or clothing ignition.
CAUTION
Clothing or other ammable material should not be placed on or near
the appliance.
Young children should be carefully supervised when they are in the
same room as the appliance. Toddlers, young children and others
may be susceptible to accidental contact burns. A physical barrier is
recommended if there are at risk individuals in the house. To restrict
access to a replace or stove, install an adjustable safety gate to keep
toddlers, young children and other at risk individuals out of the room
and away from hot surfaces.
WARNING: If you do not follow these instructions exactly, a re or explosion may result causing property damage, personal injury, or loss of life.
1. STOP! Read all the safety information above on this page.
2. Press the wireless remote OFF button.
3. Turn o all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot by
hand.
5. Locate the manual valve installed by your qualied service
technician.
6. Turn the manual valve clockwise to the OFF position.
7. Wait ve (5) minutes to clear out any gas. Then, smell
for gas, including near the oor. If you smell gas, STOP!
Follow ‘B’ in the safety information above. If you do not smell
gas, go to the next step.
8. Turn the manual valve counterclockwise to the ON
position.
9. Turn on all electric power to the appliance.
10. Press the wireless remote ON button.
11. If the appliance will not operate, follow the instructions, “To
Turn O Gas To Appliance” and call your service technician or
gas supplier.
OPERATING INSTRUCTIONS
NOTE
When this replace is initially lit, condensation will appear on the glass. This is normal in all gas replaces and will disappear after several
minutes. A paint smell will occur during the rst few hours of burning. It is recommended to leave the fan o during this period to help speed
the paint curing process. This replace may produce noises of varying degree as it heats and cools due to metal expansion and contraction. This
is normal, and does not aect the performance or longevity of the replace.
A. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot by
hand.
B. BEFORE OPERATING smell around the appliance area for gas. Be
sure to smell next to the oor because some gas is heavier than
air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re
department.
C. Use only your hand to turn the gas control manual valve. Never
use tools. If the valve will not turn by hand, do not try to repair
it; call a qualied service technician. Force or attempted repair
may result in a re or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualied service technician to inspect the
appliance and to replace any part of the control system and
any gas control that has been under water.
ON/OFF
ON
OFF
1. Press the wireless remote OFF button.
2. Turn o all electric power to the appliance if service is to be
performed.
3. Locate the manual valve installed by your qualied service
technician.
4. Turn the manual valve clockwise to OFF position.
FOR YOUR SAFETY READ BEFORE OPERATING
TO TURN OFF GAS TO APPLIANCE

30 OPERATING INSTRUCTIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
11.1 Setup Proame 2 IFC Module
1. Set the main ON/OFF rocker switch in the OFF position.
2. Install (4) AA batteries (not included) into backup battery holder
on the control module.
3. Install (3) AAA batteries (included in the components packet) in
the remote control battery bay, located at the base of the remote.
4. Connect the IFC Module to an AC power supply.
11.2 Initialize the Control System
IMPORTANT: Remove all packaging and combustible material from the
rebox before initializing the control system.
NOTE: Performing the next steps will initiate pilot start-up in manual
mode, where the pilot igniter will spark repeatedly. The pilot will ignite
if gas is supplied to the replace.
1. Locate the red SW1 button the IFC module.
2. Press the SW1 button. The IFC module will BEEP (3) times and
illuminate an amber LED. This indicates the receiver is ready to
synchronize with the transmitter.
3. Within (5) seconds, push the ON/OFF button on the remote
control. The receiver will BEEP (4) times to indicate the transmitter’s
command is accepted, and is set to the transmitter’s particular
code. The pilot will automatically ignite.
4. Press the remote control ON/OFF button again. The pilot will
extinguish, conrming the remote control command. The control
system is now initialized.
5. Set the main ON/OFF rocker switch to ON position for remote
control operation of the main burner and replace features.
11.3 Reset the System for
Manual Operation
1. Set the ON/OFF rocker switch to OFF position.
2. Press the red SWI button on the IFC module until it emits (3) beeps
and an amber LED is illuminated.
3. Within (5) seconds, press the red SWI button again. This will
close synchronization with the remote control. The pilot will
automatically light.
• Turn the main burner ON by setting the ON/OFF switch in ON
position. The main burner will only operate on HI.
• Turn the main burner OFF by setting the ON/OFF switch in the
OFF position. The pilot will remain lit even if burner is turned o,
provided CPI mode is turned on.
11.4 Automatic Safety Restart
• This system will execute an automatic turn OFF command for
approximately (5) seconds within (24) hours of a continued pilot
ame ignition to perform a safety check. This allows the system to
verify correct safety functions.
• After the turn OFF sequence is completed, the IFC module will re-
execute the latest command.
11.5 Backup Battery Operation
This appliance will operate on the backup battery pack when electric
power is interrupted, or in a power outage. The lifespan of the backup
batteries depend on various factors, such as the quality of the batteries,
number of ignitions, et cetera.
• When the backup battery pack is low, the IFC module will emit a
double-beep while receiving an ON/OFF command.
• No commands will be accepted after this alert until the back up
batteries are replaced.
• Once replaced, the IFC module will emit a ‘beep’ as soon as it is
powered.
11.6 Control System 7 Day Timeout
• If you have your Proame 2 system set to CPI (continuous pilot
ignition) with 7 consecutive days without ignition of the main
burner, the pilot will turn o. This a standard safety feature of the
SIT Proame 2 system.
• Once you turn CPI on, the 7 day timer will start. If at any time
during the following 7 days your main burner ignites, it will reset
the timer back to 7 days.
• See Section 11.9.3 Pilot Ignition Selection (IPI/CPI) on page 32
for more information.
How to check if your system is set to CPI:
The LCD screen will display the snowake icon.
To select the preferred pilot ignition feature,
1. With the system in the OFF position, press the mode key to index
the CPI mode icon.
2. Press the up arrow key to activate CPI.
3. Press the down arrow key to return to IPI. A single ‘beep’ will
conrm reception of the command.
To Turn ON the appliance:
1. With the system in the OFF position, press the remote control
ON/OFF key to turn ON the appliance.
A single ‘beep’ will emit from the IFC module to conrm recep-
tion of the command.
The LCD screen will display all active icons, and the IFC module will
start the ignition sequence.
Figure 11.1, IFC Module
SW1
BUTTON
LEDsLEDs

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces OPERATING INSTRUCTIONS 31
11.7 IFC Module Ignition Sequence
The IFC module will try (2) times for ignition, each lasting
approximately (60) seconds, with approximately (35) seconds
between each attempt.
1. With the system in OFF position, press the remote control ON/OFF
key. Approximately (4) seconds after this key is depressed, the IFC
module will generate sparks to the pilot hood.
2. First ignition attempt will generate sparks for (60) seconds.
3. If there is no ame ignition (rectication) within the (60) second
time frame, the IFC module will stop generating sparks for
approximately (35) seconds.
4. After (35) seconds of wait time, the IFC module will generate
sparks for another (60) seconds for the second ignition attempt.
5. If there is no positive rectication after (60) seconds, the IFC
module will go into a lock out. The red LED will blink (3) times, in
intervals, until the system is reset.
11.7.1 Reset IFC Module after Lockout
11.7.1.1 ON/OFF Rocker Switch
1. Set the ON/OFF rocker switch to the OFF position.
2. After approximately (2) seconds, move the switch to the ON
position. The ignition sequence will start again.
11.7.1.2 Remote Control ON/OFF Key
1. Press the remote control ON/OFF key to turn the system OFF.
2. After approximately (2) seconds, press the ON/OFF key again. The
ignition sequence will start again.
11.7.1.3 Cycling Flame
1. Press the remote control down arrow key during ame adjustment
mode to reduce the ame to OFF (indicated by OFF displayed on
the LCD screen).
2. After approximately (2) seconds, press the up arrow key. The
ignition sequence will start again.
11.8 Additional Diagnostic Information
Low Battery Condition (<4V) Remote Control:
• Battery Icon will appear on LCD remote control display.
• Replace batteries.
Low Battery Condition (<4V) Battery Backup:
• The red LED Indicator will blink (1) time in intervals.
• A low double-beep emits from the IFC control module when it
receives an ON/OFF command from the remote control..
• Replace Batteries.
Pilot Flame Error Condition:
• Red LED Indicator will blink (2) times in intervals. Contact your
dealer if this occurs.
System Lock Out Condition:
• Red LED Indicator will blink (3) times in intervals.
• Verify gas is turned on.
• Verify sensor is not shorted.
• Follow Section 11.2 Initialize the Control System.

32 OPERATING INSTRUCTIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
11.9 Remote Control Operation
11.9.1 Temperature Display
1. With the system in the OFF position, simultaneously press the
thermostat key and the mode key to change degrees from °F to
°C.
2. Visually check the LCD screen to verify either °F or °C is displayed
on the right side of the room temperature display.
11.9.2 Key Lock
This function locks the keys to avoid unsupervised operation. Once
activated, a lock icon will appear on the LCD screen.
1. Simultaneously press the mode key and the up arrow key to
activate or deactivate this function.
11.9.3 Pilot Ignition Selection (IPI/CPI)
This system has the option of a continuous (standing) pilot. This
features allows the system to change from a spark-to-pilot system
to the standing pilot option. The standing pilot will keep the rebox
warm and establish a draft in the vent, which allows the main burner
to ignite with less air-ow disruption.
When the system is OFF, the LCD screen will display the snowake icon
during the setup of either IPI or CPI mode. To select the preferred pilot
ignition feature,
1. With the system in the OFF position, press the mode key to index
the CPI mode icon.
2. Press the up arrow key to activate CPI.
3. Press the down arrow key to return to IPI. A single ‘beep’ will
conrm reception of the command.
When the system is ON,
IPI mode: LCD screen will not display the snowake icon
CPI mode: LCD screen will display the snowake icon
LOW BATTERY ALARM
KEY LOCK
LIGHT ON
ROOM
TEMPERATURE
SET POINT
TEMPERATURE/LEVEL/STATE
FLAME ON
THERMOSTAT
OFF/ON/SMART
FAN
TRANSMISSION
CPI MODE
LCD DISPLAY
ON/OFF KEY
THERMOSTAT KEY
UP/DOWN ARROWS
MODE KEY
BLUE BACK
LCD DISPLAY
PROFLAME 2 TRANSMITTER

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces OPERATING INSTRUCTIONS 33
11.9.4 Turn ON the Appliance
1. With the system in the OFF position, press the remote control
ON/OFF key to turn ON the appliance.
A single ‘beep’ will emit from the IFC module to conrm
reception of the command.
The LCD screen will display all active icons, and the IFC module will
start the ignition sequence.
11.9.5 Turn OFF the appliance
1. With the system in the OFF position, press the remote control
ON/OFF key to turn ON the appliance.
A single ‘beep’ will emit from the IFC module to conrm
reception of the command.
The LCD screen will only display the room temperature and its icon,
and the IFC module will turn o the main burner.
11.9.6 Remote Control Flame Adjustment
This control system has (6) ame levels. If the smart thermostat
operation is activated, then the manual adjustment of the ame
height will be disabled.
1. Verify the system is in the ON position and the ame level is set
at maximum.
2. Press the down arrow key once to reduce ame height by one
level until the ame is turned o.
3. Press the up arrow key once to increase ame height by one
step. If the up arrow key is pressed while the system is on, but
the ame is o, the ame will ignite on HI.
4. A single ‘beep’ will conrm reception of the command.
11.9.6.1 Deactivate Flame Modulation
1. Verify all (3) AAA batteries are installed in the remote control
battery bay.
2. Remove (1) AAA battery.
3. Press and hold the on/o key and the mode key at the same
time.
4. Reinsert (1) AAA battery.
5. While still holding the on/o key, let go of ONLY the mode key.
6. Index over to the ame graphic on the LCD screen to edit. Use
the up or down arrow key to choose ‘ON’ or ‘OFF’.
11.9.7 Remote Control Thermostat Operation
11.9.7.1 Room Thermostat
The remote control can operate as a room thermostat. The thermostat
can be set to a desired temperature to control a room’s comfort level.
To activate this function,
1. Press the thermostat key. The LCD screen will display a
temperature bulb graphic, the room temperature and set
temperature.
2. To adjust the set temperature, press the up or down arrow keys
until the desired temperature is displayed on the LCD screen.
11.9.7.2 Smart Thermostat
The smart thermostat function will adjust the ame height based
on the set temperature and the actual room temperature. The smart
thermostat function automatically adjusts the ame down when the
room temperature reaches the set point. To activate this function,
1. Press the thermostat key until the ‘SMART’ appears on LCD
screen on the right side of the temperature bulb graphic.
2. To adjust the set temperature, press the up or down arrow keys
until the desired temperature is displayed on the LCD screen.
11.9.7.3 Deactivate Remote Control
Thermostat Operation
The thermostat operation function can be deactivated. The remote
control will still operate the main burner on and o, and function
ame, fan, and light modulation. To deactivate this function,
1. Verify all (3) AAA batteries are installed in the remote control.
2. Remove (1) AAA battery.
Flame Off
Flame Level 1
Flame Level 5 Flame Level Maximum
SET TEMPERATURE
ROOM TEMPERATURE

34 OPERATING INSTRUCTIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
3. While reinserting the battery, push and hold the thermostat key.
The temperature bulb graphic will not be displayed on the LCD
screen.
4. To reactivate remote thermostat operation, follow the same key
sequence procedure above. The temperature bulb graphic will
reappear on the LCD screen.
11.9.8 Fan Speed Control (optional)
Fan speed can be adjusted through (6) speeds. To activate this
function,
1. Press the mode key to index to the fan control icon.
2. Press the up or down arrow keys to turn on, o, or to adjust fan
speed.
Thermostat mode: Fan(s) have a (5) minute delay time when the
replace is let. This allows time for heat to build in replace before
fan operation. The fan will continue to operate for approximately (12)
minutes after the replace has been turned o.
Manual mode: Fan(s) will operate at previous setting. There is no delay
in start up or stop time.
11.9.9 Accent Light Kit (if applicable)
The light intensity can be adjusted through (6) levels.
1. Press the mode key to index to the light icon.
2. Press the up or down arrow keys to adjust the intensity level.
3. A single ‘beep’ will conrm reception of the command.
11.9.9.1 Deactivate Light Kit Modulation
1. Verify all (3) AAA batteries are installed in the remote control
battery bay.
2. Remove (1) AAA battery.
3. Press and hold the on/o key and the mode key at the same
time.
4. Reinsert (1) AAA battery.
5. While still holding the on/o key, let go of ONLY the mode key.
6. Index over to the bulb graphic on the LCD screen to edit. Use the
up or down arrow key to choose ‘SET’ or ‘CLR’.
11.9.10 Remote Control Low Battery Detection
Remote control battery lifespan depends on various factors including
battery quality, number of ignitions, changes to room thermostat set
point, etcetera.
• When the remote control battery are low, a battery icon will
appear on the LCD display before all battery power is lost.
• When the batteries are replaced, this icon will disappear.

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces ADJUSTMENT 35
12.0 ADJUSTMENT
12.1 Pressure Testing
NOTE: The appliance and its appliance main gas valve must be
disconnected from the gas supply piping system during any pressure
testing of the system at test pressures in excess of ½ psi (3.5 kPa).
IMPORTANT: Pressure check taps for manifold (outgoing) and inlet
(incoming) pressure have been incorporated into the valve. The
pressure tap marked OUT measures outgoing pressure. The pressure
tap marked IN measures incoming pressure.
12.1.1 Inlet Pressure Test
NOTE: Make sure to apply incoming pressure test with all other gas
appliances on, or at full capacity in the house for proper pressure
reading.
IMPORTANT: If the inlet pressure reading is too high or too low, contact
the gas company. Only a qualied gas service technician should adjust
incoming gas pressure.
1. Loosen the inlet (IN) pressure tap by turning screw counter-
clockwise. See (A) in Figure 12.1.
2. Attach manometer using a ¼ in (6mm) I.D. hose.
3. Light pilot and burner. Check pressure to ensure it is between
the minimum and maximum recommended pressure settings.
4. Turn o burner and pilot.
5. Disconnect hose and tighten the inlet (IN) pressure tap by
turning screw clockwise. Screw should be snug. Do not over
tighten.
6. Relight pilot and burner. Then reattach manometer to the
inlet pressure tap (A) to verify the tap is completely sealed.
Manometer should read no pressure.
12.1.2 Manifold Pressure Test
1. Light pilot.
2. Loosen manifold (OUT) pressure tap by turning screw counter-
clockwise. See (B) in Figure 12.1.
3. Attach manometer to pressure tap using a ¼ in (6mm) I.D. hose.
4. Light burner. Check manometer reading.
5. Turn burner and pilot o.
6. Disconnect manometer hose and tighten the manifold (OUT)
pressure tap by turning screw clockwise. Screw should be snug.
Do not over tighten.
7. Attach the manometer to the manifold pressure tap (B) to verify
it is completely sealed. The manometer should read no pressure
when pilot and burner are on.
Table 12.1, Inlet Pressures
Fuel Natural Gas Propane
Gas Supply Min - Max Min - Max
Inlet Pressure
Tap (A)
5” - 10.5” WC
(1.25 - 2.62 kPa)
12” - 13” WC
(2.99 - 3.24 kPa)
Table 12.2, Manifold Pressure
Fuel Natural Gas Propane
Gas Supply Low - High Low - High
Manifold Pressure
Tap (B)
1.1” - 3.8” WC
(.27 - .95 kPa)
2.9” - 11” WC
(.72 - 2.74 kPa)
Figure 12.1, Pressure Check Taps
Manifold pressure tap
Inlet pressure tap
B
A

36 ADJUSTMENT Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
12.2 Burner Flame Adjustments
WARNING: To avoid property damage or personal injury, allow the
replace ample time to cool before making any adjustments.
Burner ame appearance and characteristics are aected by
altitude, fuel quality, venting conguration, and other factors. After
installation, this appliance may need additional adjustments to
achieve optimum ame appearance and visual aesthetics.
12.2.1 Burner Venturi
WARNING: VENTURI ADJUSTMENT MUST BE DONE BY A QUALIFIED
SERVICE TECHNICIAN.
NOTE: Burner venturi air shutter settings have been factory set. Refer
to Table 12.3.
When this appliance is rst lit, the burner ames will appear blue.
During the rst 15 minutes of operation, ame appearance will
gradually turn to the desired yellow appearance. If the ames remain
blue, or become dark orange with evidence of sooting (black tips),
adjustment of the air shutter opening may be necessary.
Regardless of venturi orientation, closing the air shutter will achieve a
desired yellow ame, but may produce soot on the glass. Opening the
air shutter will cause a short, blue ame that may lift o the burner.
Table 12.3, Factory Set Venturi Openings
Fuel
Natural Gas 1/16” (1.5mm) OPEN
Propane 5/8” (16mm) OPEN
12.2.1.1 Venturi Adjustment
NOTE: If soot is present on the glass, check log positioning before
adjusting the venturi. Logs must not block burner ports.
1. Remove the safety barrier and glass frame assembly.
2. Remove log set.
3. Remove burner assembly.
4. Loosen screws on venturi and adjust as necessary. Re-tighten
screw.
5. Reinstall all components previously removed.
IMPORTANT: Slight adjustments to the venturi opening will create
dramatic results. Adjust at slight increments until desired look is
achieved. Always burn the replace for at least 15 minutes, and
allow the appliance ample time to cool before making any further
adjustments.
Table 12.4, Venturi Adjustment Guidelines
Flame Characteristic Cause Solution
Dark, orange ame
with black tips
Venturi closed too far Open venturi slightly
Short, blue ames Venturi open too far Close setting slightly
Lifting (ghosting)
ames
Gas pressure too high
Venturi closed too far
Check manometer
settings
Open venturi setting
slightly
Figure 12.2, Burner Venturi
Lazy, yellow flames - no adjustment necessary
Ideal Flame Appearance
Figure 12.3, Flame Characteristics
Venturi(s) settings closed too far. Open venturi(s) slightly.
Dark, orange flames with black tips
Venturi(s) open too far. Close venturi settings(s) slightly.
Short, blue flames
Venturi settings(s) closed too far. Open venturi(s) slightly
OR gas pressure too high - check manometer settings
Lifting (ghosting) flames

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces TROUBLESHOOTING 37
Issue Cause Solution
Pilot will not light
Electrical power interrupted or
disconnected
Restore electrical power to appliance or use battery back-up.
Wiring disconnection
Ensure batteries are fully charged if using battery back-up as power source.
Use wiring schematic in this manual to determine that all wiring
connections are secure and correct.
Gas supply turned o
Check remote shut-o valves from the appliance. Usually there is a valve
near the main gas line. There may be more than (1) valve between the
appliance and main gas line.
Pilot will not stay lit No propane in tank Check propane tank. Rell if necessary.
Low gas pressure Consult a plumber or a gas supplier.
Can be caused by situations such as a bent line, too narrow diameter or
pipe, or a low line pressure.
Pilot ame not making contact
with the ame rectication
sensor on the pilot assembly
Verify the pilot ame envelopes the top of the ame sensor and extends far
enough onto burner for ignition.
To adjust pilot ame, turn pilot adjustment screw on the gas valve clockwise
to decrease ame, and counterclockwise to increase ame.
Pilot adjustment screw not
sealed
Seal pilot adjustment screw. Do not over-tighten.
Pilot ame always on, or
will not extinguish
Control system set to CPI mode Set control system to IPI mode.
Main burner ame will not
light
ON/OFF rocker switch in OFF
position
Switch rocker switch to ON position.
Gas supply turned o Check for multiple shut-os in the supply line. Verify gas supply is turned
on.
Low gas supply Consult with plumber or gas supplier.
Check propane tank. Rell if necessary.
Wiring disconnection or
improper wiring
Check for faulty or incorrect wiring.
Plugged main burner orice Remove blockage.
Pilot ame Verify the pilot ame is properly directed to ignite burner. See pilot ame
troubleshooting above.
Remote control not working
properly
Replace batteries.
No call for heat
Verify remote control is powered ON and thermostat operation is turned
OFF.
ATTENTION: Troubleshooting must be performed by a qualied
technician.
Before proceeding with the steps in the following troubleshooting
guide,
• Verify proper 120VAC power supply to the control module.
• Verify the control module battery pack and the remote control
batteries are fresh and installed with correct polarity.
• Verify all connections between the wire harnesses and the
system components are proper and positive.
• Verify the communication link is established between the remote
control and the IFC module.
• Verify inlet pressure meets the recommended inlet pressure. If
necessary, adjust line pressure regulator.
13.0 TROUBLESHOOTING

38 TROUBLESHOOTING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
Issue Cause Solution
Pilot and burner
extinguish while in
operation
No propane in tank Check propane tank. Rell if necessary.
Incorrect glass assembly
installation
Refer to Section 9.1 Glass Assembly on page 25
Incorrect vent cap installation Adjust if necessary.
Vent cap blockage Remove debris if necessary.
Improper pitch on horizontal
venting
¼ in. (6mm) rise per foot (30 cm) is required on horizontal venting
Exhaust vent pipe leaking
exhaust gases back into rebox
Check for leaks and repair if necessary.
Excessive draft A restrictor may need to be installed or modied.
Soot appears on glass Improper media placement Refer to Section 9.2 #CXS-500 Log Set Installation on page 26.
Improper venturi setting Venturi air shutter may need to be opened slightly to allow more air into
the gas mix. Refer to Section 12.2.1.1 Venturi Adjustment on page 36.
Incorrect vent cap installation Adjust if necessary.
Vent cap blockage Remove debris if necessary.
Flame burns blue and lifts
o burner
Improper venturi setting Venturi air shutter may need to be opened slightly to allow more air into
the gas mix. Refer to Section 12.2.1.1 Venturi Adjustment on page 36.
Incorrect vent cap installation Adjust if necessary.
Blockage or leakage of the vent
system
Check the vent pipes for leaks, and the vent cap for debris. Repair the vent
pipes or remove debris from vent cap, if necessary.
No reaction to command Battery back batteries or remote
control batteries low
Replace batteries.
No communication between
remote control and IFC module
Reprogram remote control to IFC module.
A maximum number of failed
ignitions or ame restorations
has been reached
Reset IFC module.

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces MAINTENANCE 39
14.0 MAINTENANCE
ATTENTION: Installation and repair should only be done by a qualied
service person. The appliance should be inspected before use and at
least annually by a professional service person. More frequent cleaning
might be required due to excessive lint from carpeting, bedding
material, et cetera. It is imperative that control compartments, burners,
and circulating air passageways of the appliance be kept clean. Use a
vacuum to clean all components.
WARNING: The appliance area must be kept clear and free from
combustible materials, gasoline and other ammable vapors and
liquids.
14.1 Firebox
Performed by: Qualied Service Person
Frequency: Annually
Action:
• Vacuum and clean any debris in the rebox that is not supposed
to be there.
• Inspect and operate the bottom latch assembly. Verify the
assembly is free from obstruction to operate. The handles must
have spring tension but be able to move forward freely.
14.2 Fan
CAUTION: Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous operation.
Verify proper operation after servicing.
Performed by: Qualied Service Person
Frequency: Every 6 months
Action:
• Disconnect the fan from electrical current and vacuum.
• The bearings are sealed and require no oiling.
14.3 Vent System
NOTE: If the vent-air intake system is disassembled for any reason,
reinstall per instructions provided with installation. Refer to 6.0 on
page 15.
Performed by: Qualied Service Person
Frequency: Annually
Action:
• Examination of the vent system is required.
• The ow of combustion and ventilation air must not be
obstructed.
14.4 Glass Assembly
CAUTION: Do not operate appliance with the glass assembly removed,
cracked, or broken. Use protective gloves to handle any broken or
damaged glass assembly components.
WARNING: Do not use substitute materials.
WARNING: Avoid striking or slamming glass assembly. Avoid abrasive
cleaner. DO NOT clean glass while it is hot.
IMPORTANT: Any safety screen, guard, or barrier removed for servicing
the appliance must be replaced prior to operating the appliance.
Performed by: Homeowner
Frequency: Annually
Action:
• Prepare a work area large enough to accommodate the glass
assembly on a at, stable surface.
• Remove safety screen and glass frame assembly.
• Clean glass window with a suitable replace glass cleaner using
a soft cloth. Abrasive cleaners must not be used. Be careful not to
scratch the glass when cleaning.
• Reinstall glass assembly and safety screen. Do not operate
replace without safety screen.
Performed by: Qualied Service Person
Frequency: Annually
Action:
• Clean glass window with a suitable replace glass cleaner using
a soft cloth. Abrasive cleaners must not be used. Be careful not to
scratch the glass when cleaning.
• Inspect the glass for cracks, scratches, and nicks.
• Verify the glass assembly is properly intact and not damaged.
• Replace the glass and the assembly #700-178T as necessary.
• Only Hussong Mfg. Co., Inc. will supply the replacement of glass
assembly as a complete unit.

40 MAINTENANCE Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
14.5 Burner and Pilot System
The burner assembly may be removed for easier access to the control
compartment. Refer to Section 9.3 Control Board Removal and
Installation on page 27 for instructions.
Verify gas supply is turned on and lled. Consult with plumber or gas
supplier as necessary.
Performed by: Qualied Service Person
Frequency: Annually
Action:
• Vacuum all components of the burner system.
• Check all accessible gas-carrying tubes, connections, pipes and
other components for leaks.
• Inspect the operation of the ame safety system Pilot or Flame
rectication device. Visually check pilot light when in operation.
• Inspect and ensure the lighting of the main burner occurs within
(4) seconds of the main gas valve opening. Check for faulty or
incorrect wiring and correct or replace as necessary. Inspect
primary air openings (burner ports) for blockage, especially near
the pilot.
• Visually check burner ame pattern when in operation. Flames
should be steady, not lifting or oating.
• Test and measure the ame failure response time of the ame
safety system. It must de-energize the safety shuto in no more
than (30) seconds.
Figure 14.1, Burner System
Burner orice
Lazy, yellow flames - no adjustment necessary
Ideal Flame Appearance
Figure 14.2, Pilot and Burner Correct Flame Appearance
BURNER PORTS

#CSK-25 R.11 August 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces REPLACEMENT PARTS LIST 41
15.0 REPLACEMENT PARTS LIST
CSK-25
Hussong Manufacturing Co., Inc.
P.O. Box 577
204 Industrial Park Drive
Lakeeld, MN 56150-0577
USA
CONTROL BOARD AND PARTS
Control Board - Natural Gas CXS-150 Pilot Orice - Natural Gas 700-165
Control Board - Propane CXS-151 Pilot Orice - Propane 700-168
S.I.T. IPI Gas Valve - Natural Gas 700-567 Valve Step Motor - Natural Gas 700-504
S.I.T. IPI Gas Valve - Propane 700-567-1 Valve Step Motor - Propane 700-504-1
Proame 2 IFC Board 700-652 18” Flexible Gas Line - Black 700-213B
IFC Wire Harness Assembly 700-653 Flexible Gas Line - Valve to Burner Connection 700-226F
Proame 2 IFC External Antenna 700-ANT Natural Gas Burner Orice #44 700-244
Pilot Assembly - Natural Gas 700-551 Propane Burner Orice #54 700-254
Pilot Assembly - Propane 700-551-1 Conversion Kit - Natural Gas NCK-CXS-S
S.I.T. IPI Pilot Hood 700-098R Conversion Kit - Propane LCK-CXS-S
Transmitter (Remote Control) 700-408 Burner Assembly CXS-135
GLASS AND GLASS PARTS
Glass with Gasket 23-7/8” x 14.25” 700-178T
Valance CXS-005
Glass Gasket 900-006
SAFETY BARRIERS
Arched Mission Screen Front CK25A-MSF
Arched Full Prairie Door Screen Front CK25A-FPDSF2
Arched Prairie Screen Front CK25A-PSF
Prairie Screen Front CK25-PSF
Rectangular Screen Front CK25-RSF
Arched Screen Front CK25A-SF
LOG SET
Log Set CXS-500
Log #CS1 CXS-1
Log #CS2 CXS-2
Log #CS3 CXS-3
Log #CS4 CXS-4
Log #CS5 CXS-5
Log #CS6 CXS-6
Log #CS7 CXS-7
Log #CS8 CXS-8
Rock Wool Embers 900-REMB
1/2 in. Lava rock 600-715
Replacement parts are available through your local dealer. Contact your local dealer for availability and pricing.
SHROUDS
Blank shroud (4 pc.) CK25-004
4 sided blank shroud (4 pack) CK25-008
22.5” x 36” shroud (1 pc.) CK25-22536
25” x 38” shroud (1 pc.) CK25-25038
30” x 44” shroud (1 pc.) CK25-30044
Custom shroud CK25-CUS
Custom arched shroud CK25-ACUS
VENTING COMPONENTS
36’ (10.97m) of 3” (76mm) Expandable Flexible Pipe 816
Round Termination Cap 816-CAP
FAN KIT
Fan Assembly CXS-028-IPI
WARNING: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer, birth
defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
The following warning is for replacement parts for this appliance.
ADDITIONAL COMPONENTS
Manual Gas Shut-o Valve 700-203
Upper Louver CK25-202
Lower Louver CXS-201

42 LIMITED LIFETIME WARRANTY
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #CSK-25 R.11 August 2020
LIMITED LIFETIME WARRANTY
Warranty Coverage
Hussong Manufacturing Company, Inc. (Hussong Mfg.) warrants this
Kozy Heat gas appliance from the date of purchase to the original
purchaser, that it is free of defects in materials and workmanship at
the time of manufacture. Registering your replace warranty does not
require any documents to be sent in to Hussong Mfg. Please retain
your proof of purchase reecting the date of purchase along with the
serial number and model of your replace for any future warranty
claims.
If a defect is noted within the warranty period, the customer should
contact their authorized dealer for service within 30 days.
30 Days: Parts & Labor*
• Paint
• Light bulbs
• Gasket material
• Glass media and media dam
Year 1: Parts & Labor*
• All parts and material except the items listed in the 30 day
warranty and any exclusions or limitations that may apply.
*Hussong Mfg. will issue labor reimbursement to an authorized dealer
only. Hussong Mfg. will not be liable for charges occurred as a result of
any service performed by a non-authorized service provider, without
pre-authorization.
Years 2 through Lifetime: Parts Only
• Firebox
• Heat Exchanger
• Logs
• Burner tube or pan
• Outer shell
• Heat shield(s)
• Front Viewing Glass (thermal shock only)
• Refractory Firebox liner (excluding enamel and glass panels)
EXCLUSIONS AND LIMITATIONS
1. This appliance must be installed by a licensed, authorized service technician or contractor. It must be installed, operated and maintained
at all times in accordance with the instructions in the owner’s manual or the warranty is void.
2. This warranty is nontransferable and is made to the original purchaser only.
3. This warranty excludes standard wear and tear of the appliance which is considered normal usage over time.
4. Discoloration and some minor expansion, contraction or movement of certain parts, resulting in noise, is normal and not a defect.
5. Warranty is automatically voided if the appliance’s serial number and/or testing label is removed or if the appliance is altered or
tampered with in any way.
6. Warranty is void if the appliance is subject to submersion in water or prolonged periods of dampness or condensation. Any damage
to any part of the appliance due to water or weather damage which is the result of, but not limited to, improper chimney/venting
installation will also render this warranty void.
7. This warranty does not cover installation and operational related problems such as environmental conditions, nearby trees, buildings,
hilltops, mountains, inadequate venting or ventilation, excessive osets, negative air pressures caused by any mechanical systems.
8. Chimney components and other Non-Hussong Mfg. accessories used in conjunction with the installation of this appliance are not
covered under this warranty.
9. Damage to plated surfaces or accessories, if applicable, caused by scratches, ngerprints, melted items or other external sources left on
the surfaces from the use of cleaners is not covered under this warranty.
10. It is expressly agreed and understood that this warranty is Hussong Mfg.’s sole obligation and purchaser’s exclusive remedy for defective
replace equipment. Hussong Mfg. is free of liability for any damages caused by this appliance, as well as inconvenience expenses
and materials. Incidental or consequential damages are not covered by this warranty. In some states, the exclusion of incidental or
consequential damage may not apply. Hussong Mfg. shall not be held to implied warranties and this warranty shall replace all previous
warranties.
11. This limited lifetime warranty is the only warranty supplied by Hussong Mfg. Any warranties extended to the purchaser by the dealer/
distributor, whether expressed or implied, are hereby disclaimed and the purchaser’s recourse is expressly limited to the warranties set
forth herein.
12. Any part repaired or replaced during the limited warranty period will be warranted under the terms of the limited warranty for a period
not to exceed the remaining term of the original limited warranty.
13. Any replacement part repaired after the warranty period will include a 90 day parts coverage
14. Hussong Mfg. may require the defective part to be returned using a pre-authorized RGA number or a photo of the defective component.
Failure to provide either can result in a denied claim.
15. This warranty does not cover the appliances ability to heat a desired space, as there are many factors that can impact the heating
performance in each home. Consideration should be implied to the appliance’s location, room size, home design, environmental
conditions, insulation, and tightness of the home.
16. Hussong Mfg. reserves the right to make changes at any time, without notice, in design, material, specications, and prices. Hussong
Mfg. reserves the right to discontinue models and products.
July 2018

