kozy heat Z-42 User manual

HUSSONG MANUFACTURING CO., INC.
INSTALLATION AND
OPERATION MANUAL
ͷDo not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this replace or any other appliance.
ͷDo not overre.
ͷFor use with solid wood fuel only.
ͷComply with all minimum clearances to
combustibles as specied. Failure to
comply may cause house re.
WARNING:
Read instructions carefully before
installation. Failure to install this replace
correctly can cause serious structural and
re hazards and may void your warranty.
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 .
WARNING
HOT SURFACES!
Glass and other surfaces are hot
during operation AND cool down.
• DO NOT touch glass until its cooled
• NEVER allow children to touch glass
• Keep children away
Hot glass will cause burns.
• CAREFULLY SUPERVISE children in the same room as the
fireplace
• Alert children and adults to hazards of high temperatures
• Keep clothing, furniture, draperies and other flammable
materials away
Hussong Mfg. Co., Inc.
Z-42 & Z-42-CD Report No: F19-545
Rev. 18, December 2020
Starting Serial Number: 20 16705 46
Z-42 & Z-42-CD
Models #Z-42 & #Z-42-CD
Zero Clearance Factory Built Fireplace

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces 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 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.
To ense you eceive a quality product, the complete feplace is thoughly inspected befe packaging.
O commitment to quality and custom satisfaction has emained the same f ov 40 yes. We
o a complete line of gas and wood 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 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: ______________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________

#Z-42 & #Z-42-CD R.18 December 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 Certication ............................................................................. 7
1.2 California Proposition 65 Warning........................................................ 7
1.3 Safety Information...................................................................................... 7
1.4 Installation Overview ................................................................................ 7
2.0 SPECIFICATIONS .....................................................................8
2.1 Btu & Eciency Specications ............................................................... 8
2.2 Electrical Specications ............................................................................ 8
2.3 Fireplace Dimensions ................................................................................ 9
3.0 INSTALLATION PLANNING..................................................... 10
3.1 Fireplace Placement Clearance Requirements................................. 10
3.2 Zone Heating................................................................................................ 10
3.3 Clearances to Combustibles ................................................................... 12
3.4 Wall Enclosure Rough Opening ............................................................. 13
3.5 Hearth Extension ........................................................................................ 14
3.6 Alternate Floor Protection Material...................................................... 15
3.7 Combustion Air Duct Pipe....................................................................... 16
3.8 Mantel and Facing Requirements......................................................... 18
4.0 OPTIONAL FAN INSTALLATION.............................................19
4.1 #600-1 Optional Fan Kit............................................................................ 19
5.0 INSTALLATION ........................................................................21
5.1 Chimney Requirements............................................................................ 21
5.2 Approved Chimney Systems................................................................... 21
5.3 Anchor Plate Installation.......................................................................... 21
5.4 Chimney Location and Considerations............................................... 22
5.5 Chimney Installation.................................................................................. 24
6.0 FIREPLACE SETUP................................................................... 26
6.1 Firebrick Installation .................................................................................. 26
6.2 Grill Set Installation and Removal......................................................... 27
6.3 Door Handle Installation.......................................................................... 27
6.4 Door Seal Alignment and Adjustment................................................ 28
7.0 FIREWOOD SELECTION AND CONSIDERATIONS................. 30
7.1 Materials that should not be burned................................................... 30
7.2 Preparing and Purchasing Firewood.................................................... 30
8.0 FIREPLACE OPERATION..........................................................31
8.1 Fireplace Safety Information................................................................... 31
8.2 Initial Fireplace Operation ....................................................................... 31
8.3 Building a Fire............................................................................................... 31
8.4 Maintaining a Wood Fire .......................................................................... 32
8.5 How to Operate the Z-42 Fireplace ...................................................... 33
9.0 MAINTENANCE REQUIREMENTS........................................... 34
9.1 Ash Disposal.................................................................................................. 34
9.2 Creosote - Formation and Need for Removal................................... 34
9.3 Glass Information........................................................................................ 34
9.4 Cast Door Model Roller Catch Plate Replacement.......................... 35
9.5 Cast Door Model Roller and Clevis Pin Replacement..................... 35
9.6 Door Gasket Replacement....................................................................... 36
10.0 TROUBLESHOOTING............................................................. 37
11.0 REPLACEMENT PARTS..........................................................38
LIMITED 20 YEAR WARRANTY ...................................................... 41

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INTRODUCTION 7
1.0 INTRODUCTION
1.1 Appliance Certication
Laboratory: PFS in Cottage Grove, Wisconsin, USA
Standards:
UL 127-2015 (R2016) and CAN/ULC S610:2018 Safety Standards for
U.S. and Canadian installations.
U.S. ENVIRONMENTAL PROTECTION AGENCY Certied to comply with
2020 particulate emission standards using cord wood.
1.2 California Proposition 65 Warning
WARNING: This product and the fuels used to operate this
product (wood), and the products of combustion of such fuels,
can expose you to chemicals including carbon black, which is
known to the State of California to cause cancer, and carbon
monoxide, which is known to the State of California to cause
birth defects or other reproductive harm. For more information,
go to www.P65Warnings.ca.gov
1.3 Safety Information
WARNING: THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED
GAS LOG SET. TO REDUCE THE RISK OF FIRE OR INJURY, DO NOT INSTALL
AN UNVENTED GAS LOG SET INTO THIS FIREPLACE.
For further information on using your replace safely, obtain a copy
of the National Fire Protection Association publication “Using Coal &
Wood Stoves Safely” NFPA No. HS-10.
This replace installation must conform with local building codes,
or in the absence of local codes, with the NFPA 211 Standard for
Chimneys, Fireplaces, and Vents.
Installation and repair should only be performed by a qualied
installer.
This wood heater needs periodic inspection and repair for proper
operation. It is against federal regulations to operate this wood heater
in a manner inconsistent with operating instructions in this manual.
CAUTION: This appliance requires the need for an adequate supply
of air for combustion. Ensure there is enough ventilation air for safe
operation of all fuel burning appliances in the home at the same time.
Starving appliances for air can cause severe back drafting, negative
pressure, and nuisance outages.
Do not use any makeshift components or any components not
specied for use with this appliance. If you modify it or any of its
components, you will void the warranty and you may possibly cause
a re hazard.
CAUTION: Check building codes prior to installation.
• Installation MUST comply with local, regional, state, and national
codes and regulations.
• Consult insurance carrier, local building, re ocials or
authorities having jurisdiction about restrictions, installation
inspection, and permits.
It is required in some jurisdictions to install smoke and carbon
monoxide detectors where heaters are installed. Install at least one
smoke detector on each oor of your home to ensure your safety.
It should be located away from the wood appliance and close to
the sleeping areas. Locating a smoke detector too close to a wood
appliance can cause the smoke detector alarm to sound if a pu
of smoke is emitted while the wood appliance door is open during
reloading. Follow the smoke detector manufacturers placement,
installation, and maintenance instructions.
1.4 Installation Overview
NOTE: The qualied installer should follow the procedure best suited
for the installation.
1. If masonry (optional) is to be used, prepare the foundation for
the masonry load. A lintel is required to support the added
weight above the replace.
2. Frame an opening for the replace, allowing for vent installation
and type of installation (corner, at wall application).
3. Install optional hearth.
4. Install optional heat duct venting.
5. Install any electrical wiring.
6. Install replace into framing.
7. Attach combustion air pipe.
8. Install chimney.
9. Install desired facing material.
10. Install mantel.
11. Install optional fan.
12. Install rebrick.
13. Install door components and grills.
14. Install any optional decorative accessories.

8SPECIFICATIONS Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
2.0 SPECIFICATIONS
2.1 Btu & Eciency Specications
EPA Certication # 214-19
EPA Certied Emissions 1.22 grams per hour
LHV Tested Eciency 70.6%
HHV Tested Eciency 66.0%
Burn time (length of high re test / low
re test)
2 - 9 hours
EPA Btu Output 12,850-36,231 Btu/ hr
*Peak Btu/hour Output 49,133 Btu/hr
**Optimum Eciency 73.32
Fuel Cord wood
*A peak BTU out of the appliance is calculated using the maximum rst
hour burn rate from the High EPA Test and the BTU content of cordwood
times the eciency.
**Optimum eciency is calculated using the medium re test burn data,
BTU content of the cordwood, and the best case moisture content of the
cordwood.
This wood heater has a manufacturer-set minimum low burn rate that
must not be altered. It is against federal regulations to alter this setting
or otherwise operate this wood heater in a manner inconsistent with
operating instructions in this manual.
2.2 Electrical Specications
Code approved line voltage wiring 14 gauge or better must be used
when wiring the optional #600-1 fan kit assembly. Refer to local codes
for specic requirements.
This appliance must be electrical grounded and connected with local
codes, or in the absence of local codes, with the National Electrical
Code, ANSI/NFPA 70 Current Edition, or the Canadian Electrical Code CSA
C22.1.

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces SPECIFICATIONS 9
2.3 Fireplace Dimensions
Figure 2.1, Fireplace Dimensions
7⁄”
(201mm)
42”
(1066mm)
25⁄”
(659mm)
16”
(407mm)
18¼”
(464mm)
3⁄”
(92mm)
3⁄”
(80mm)
5⁄”
(149mm)
38”
(965mm)
31⁄”
(805mm)
18⁄”
(462mm)
12⁄”
(307mm)
25⁄”
(659mm)
16”
(406mm)
TOP VIEW
LEFT SIDE FRONT VIEW RIGHT SIDE
ELECTRICAL
BOX
AIR INTAKE
ADAPTER

10 INSTALLATION PLANNING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
3.0 INSTALLATION PLANNING
3.1 Fireplace Placement
Clearance Requirements
WARNING: Follow all instructions and clearances as outlined
throughout this manual.
See Figure 3.1, Placement Clearance Requirements on page 11 for
illustration.
• Location of doors and windows on all oors of the home in
relation to the replace and chimney must be considered and be
in compliance with applicable codes, if any.
• This replace must be installed on a level surface capable of
supporting the replace and venting.
• The replace must be placed directly on wood or non-
combustible surface (not linoleum or carpet) extending the
entire depth and width of the replace.
• Metal sealing strips must be used under the replace and hearth
extension. See section 3.5 Hearth Extension on page 14 for
more information.
• Due to high surface temperatures, the replace should be
located out of trac and away from furniture and draperies.
• The minimum hearth extension oor area is 16” (406mm) in
front of the replace opening and 8” (203mm) beyond each
side of the replace opening. The minimum hearth extension
must be insulated with non-combustible oor protection with a
minimum insulation R-value of 0.8.
Manufactured hearth materials have a published R value
(resistance to heat) or k value (conductivity of heat). Use the
following formula to convert a k value to a R value.
R=1/k x inches of thickness. See section 3.6 Alternate Floor
Protection Material on page 15 for full equation.
• Please be aware of the large amount of heat this replace will
produce when determining a location.
3.2 Zone Heating
The Z42 wood replace is an appliance that provides zone heating.
Zone heating eectively heats the area the appliance is installed
in, as well as the spaces connected to that area. Zone heating is a
great method to complement a primary heating source, such as a
conventional oil, gas, or electric heating system.
To increase the eectiveness of zone heating, consider where the
family spends the most of the time. This is normally the family
room. By locating your replace in this area, you will maximize
the eectiveness of the appliance’s heat production. Other factors
aecting your heating capabilities will be your house size, type and
amount of insulation in your home, the use of optional heat transfer
kits, and your climate zone.
Optional heat transfer kits are a great method to move heat to other
sections of the house. The Z42 wood replace is approved for use
with part #HTK-INT. This kit contains exible pipe that is connected to
a wall mounted fan to transfer heat from the replace. See additional
information in the heat transfer kit manual. Ceiling fans are an
additional mechanism to promote good air movement to fully utilize
the heat produced from your replace.

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION PLANNING 11
Figure 3.1, Placement Clearance Requirements
72”
(1.83m)
12”
(305mm)
8”
(203mm)
3”
(76mm)
8”
(203mm)
48”
(1219mm)
16”
(406mm)
MANTEL PROJECTION
FIREPLACE FACE
TOP TO MANTEL
MINIMUM
ENCLOSURE HEIGHT
MINIMUM WIDTH OF
HEARTH EXTENSION
MINIMUM DEPTH OF
HEARTH EXTENSION
NON-COMBUSTIBLE
FLOOR PROTECTION WITH
MINMUM INSULATION R-VALUE OF 0.8
FUEL DOOR
OPENING TO
ADJACENT
SIDE WALL
METAL SEALING STRIPS
FIREPLACE SIDE
TO ADJACENT
SIDE WALL
DO NOT FILL SPACE DIRECTLY ABOVE FIREPLACE
WITH ANY MATERAL (EXCEPT WOOD FRAMING)
DO NOT INSTALL SHELVING OR
CUPBOARDS INTO THIS AREA
Nominal 2” x 4” framing used

12 INSTALLATION PLANNING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
3.3 Clearances to Combustibles
NOTE: Even though minimum clearances from back wall and side walls
is 0” (0mm), a 1/4” (6mm) expansion space is recommended to allow
for heat expansion.
Table 3.1, Minimum Clearances to Combustibles
WITHIN ENCLOSURE AREA
Fireplace to back wall 0” 0mm
Fireplace to sidewalls 0” 0mm
Top stand-o to header 0” 0mm
Minimum height of replace enclosure from the replace base 72” 1.83m
EXPOSED AREA
Wallboard to faceplate top edge and sides 0” 0mm
Fuel door opening to sidewall 8” 203mm
Fireplace face top to 8”(203mm) mantel 12” 305mm
Front of replace 36” 914mm
Figure 3.2, Typical Installation Options
48½”
(1232mm)
26¼”
(667mm) 42½”
(1080mm)
3” (76mm)
67”
(1702mm)
94¾”
(2407mm)
8” (203mm)
21½”
(546mm)
26¼”
(667mm)
26¼”
(667mm)
42½”
(1080mm)
COMBUSTION AIR PIPE
FROM DOOR TO
SIDE WALL
COMBUSTION
AIR PIPE
COMBUSTION AIR PIPE
Must allow 6” (152mm)
for combustion air pipe
NOTE: All dimensions include 1/4” (6mm) side & back expansion space and 1/2” (13mm) sheathing.
Sheathing is ush with with the replace front. Dimensions must be adjusted if your sheathing is
more than 1/2” (13mm) thick.

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION PLANNING 13
3.4 Wall Enclosure Rough Opening
IMPORTANT: If this replace is installed on an exterior wall, it must be
insulated the same as any other exterior wall to prevent cold air from
entering the home.
IMPORTANT: Allow a minimum of 6” (152mm) in framing
width dimensions for the combustion air duct pipe, which will
be installed after replace has been inserted into framing.
See Figure 3.2 on page 12.
CAUTION: Consider the height of the hearth extension when framing
the opening. The height of a hearth extension material may require the
replace to be raised on a platform so the hearth extension material
does not block the air inlet and outlet grills. If the air inlet or outlet grills
are blocked, this may cause the replace to overheat.
• Frame the opening to t replace. All required clearances must
be maintained.
• Minimum wall enclosure dimensions: 42-1/2” (1080mm) wide x
38-1/4” (792mm) high x 26-1/4” (667mm) deep.
• If masonry (optional) is to be used, prepare the foundation
necessary to support the full masonry load. A lintel is required to
support the added weight of the masonry construction above
the replace.
3.4.1 TV Mounting Considerations
Mounting a television above a replace is a common practice. Mantel
depth, ceiling heights, and wall and mantel construction material all
aect television surface temperatures. Most television manufacturers
specify in their instructions that a television should not be installed
on, near, or above a heat source.
Television location rests solely on the homeowner. It is the home
owner’s responsibility that the preferred TV mounting and mantel
design will not exceed the listed maximum operation temperature of
their electronic goods.
Figure 3.3, Framing Dimensions
38¼”
(792mm)
42½”
(1080mm)
26¼”
(667mm)
Nominal 2” x 4” framing used

14 INSTALLATION PLANNING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
3.5 Hearth Extension
WARNING: Hearth extensions MUST be installed exactly as specied.
CAUTION: The lower grill must be allowed to open completely. Do not
position replace in such a manner that would obstruct this grill.
IMPORTANT: Metal sealing strip (included) MUST be installed to provide
protection against sparks or embers that might come in contact with
combustible ooring or support.
• Install the sealing strip so it is centered under the replace and
the hearth extension, for the full width of the replace. Ensure
that the gap between the hearth and an on-site constructed
hearth extension is sealed, with sand-cement grout and/or
covered with a metal sealing strip.
• RAISED AND NON-RAISED HEARTHS: Combustible ooring
16” (406mm) in front of the replace opening and 8”(203mm)
beyond each side of the replace opening (minimum
dimensions of hearth extension) must be insulated with non-
combustible oor protection with a minimum insulation R-value
of 0.8.
• Manufactured hearth materials have a published R value
(resistance to heat) or k value (conductivity of heat). Use the
following formula to convert a k value to a R value.
R=1/k x inches of thickness. See section 3.6 Alternate Floor
Protection Material on page 15 for complete formula.
• If installing optional #600-1 fan kit, run electrical wiring prior
to enclosing the sides of the replace. See Section section 4.0
Optional Fan Installation on page 19.
METAL SEALING STRIPS
SAND-CEMENT GROUT
NON-COMBUSTIBLE
HEARTH EXTENSIONS
MATERIAL
FLOOR
Figure 3.4, Hearth Extension

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION PLANNING 15
3.6 Alternate Floor Protection Material
How to determine if alternate oor protection materials are acceptable:
• All oor protection materials must be non-combustible (i.e., metals, brick, stone, mineral ber boards, etc.).
• Any organic materials (i.e., plastics, wood, paper products, etc.) are combustible and must not be used.
• The oor protection specied may include some form of thermal designation such as R-value (thermal resistance),
• K-factor (thermal conductivity), or C-factor (thermal conductance).
Procedure:
A. Convert specication to R-value:
I. R-value given: no conversion needed
II. k-factor is given with a required thickness (T) in inches: R=1/k x T
III. C-factor is given: R=1/C
B. Determine the R-value of proposed alternate oor protector
I. Use formula is step 1 to convert values not expressed as ‘R’. For multiple layers, add R-values of each layer to determine overall R-value.
C. If overall R-value of the system is greater than the R-value of specied oor protector, the alternate is acceptable.
EXAMPLE:
The specied oor protector should by 3/4 inch thick material with a k-factor of 0.84.
The proposed alternate is 4” brick with a C-factor of 1.25 over 1/8”mineral board with a k-factor of .29.
Step (a): Use formula above to convert specication to R-value.
R = 1/k x T = 1/.84 x .75 = 0.893.
Step (b): Calculate R of proposed system.
To determine the R value of 4” brick with C =1.25;
Rbrick = 1/C = 1/1.25 = 0.80
To determine the R value of the 1/8” mineral board with k = 0.29;
Rmineral board = 1/k x T (thickness of board) = 1/.29 x .125 = .431
To determine the Combined R value of brick and mineral board =
Rbrick + Rmineral board = .8 + .431 = 1.231
Step (c): Compare proposed system of R of 1.231 to specied R of .893.
Since proposed system R is greater than required, the system is acceptable.
Denitions:
Thermal conductance
Thermal conductivity
Thermal resistance
C=
k=
R=
Btu
(hr)(ft2)(ºF)
W
(m2)(ºK)
(Btu)(in)
(hr)(ft2)(ºF)
W
(m)(ºK)
Btu
(hr)(ft)(ºF)
(ft2)(hr)(ºF)
Btu
(m2)(ºK)
W
=
=
=
=
IMPERIAL
UNITS
METRIC
UNITS

16 INSTALLATION PLANNING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
3.7 Combustion Air Duct Pipe
WARNING: Do not use plastic exible pipe, such as dryer vent pipe, for
combustion air duct pipe venting.
WARNING: Do not terminate combustion air duct pipe into attic or
garage. Termination must be to the outside of the home.
IMPORTANT: Combustion air duct pipes must be secured with screws to
prevent separation and cold air transfer.
NOTE: If the combustion air duct pipe runs for any distance outside
the enclosure, but inside the house, wrap with insulation to eliminate
condensation or frost build-up. See Figure 3.6
NOTE: If the air intake duct pipe will terminate at the same height
or above the air combustion collar on the replace, an air trap is
recommended. See venting congurations in section Figure 3.7,
Combustion Air Duct Venting Congurations on page 17.
This replace requires a supply of outside air for combustion. The Z-42
is manufactured with a collar protruding approximately 1/4”(6mm)
out from the right side of the replace. An outside air duct pipe
adapter (4” [102mm] in diameter and 3” [76mm] in length) is included
with this replace to properly connect the outside air duct pipe to the
replace.
The combustion air duct pipe termination must be located in an area
so it cannot be blocked (i.e., snow drifts). 4’ (1219mm) above grade is
recommended.
Do not connect outside air adapter until after the replace has
been inserted into framing.
Installation instructions continue on the next page.
INSERT AIR INTAKE ADAPTER INTO 4”COLLAR ON THE RIGHT SIDE
OF THE FIREPLACE AFTER FIREPLACE HAS BEEN INSERTED INTO FRAMING
Figure 3.5, Combustion Air Intake Adapter
Outside Air Inlet
Outside Wall
Fireplace
Insulated Flexible
Air Duct Pipe
Figure 3.6, Combustion Air Intake Insulation

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces INSTALLATION PLANNING 17
3.7.1 Combustion Air Intake - Air Trap
• An optional air trap can be used in venting congurations 1
through 3 in Figure 3.7 below.
• An air trap is REQUIRED on venting conguration 4 when the
combustion air intake is above the air intake collar on the
replace.
3.7.2 Combustion Air Duct Installation
IMPORTANT: Maximum air duct vent pipe length is 25’ (7.6m).
1. Insert combustion air intake adapter into the 4”(102mm) collar
on the right side of the replace. Secure with screws.
2. Connect a 4” (102mm) galvanized or heavier pipe to the adapter,
and run to the nearest outside wall. Secure with screws. See
venting congurations below.
3. Aluminum ex duct pipe is approved for outside combustion air,
and may also be used. Do not crush or tear aluminum ex duct
pipe. Do not use plastic pipe.
4. Use 4” exible duct pipe for vent runs under 10’ (3m). For vent
runs longer than 10’ (3m), use 5” aluminum ex duct pipe. Place
the 4” to 5” adapter as close to the replace as possible.
5. If ducting beside the chimney chase, terminate intake air at least
3’ (914mm) below the termination level of chimney. The air pipe
may also be ducted below oor level of the replace, providing it
is ducted to the outside.
6. Mount a standard metal vent cover designed for a 4” (102mm)
pipe on outside exterior wall, with the louvers pointing
downward. Use a 5”metal vent cover if you increased the air duct
vent size in Step 4.
Figure 3.7, Combustion Air Duct Venting Congurations
8”
12”
Metal sealing strip centered under
replace and hearth extension
for the full width of the replace
Hearth Extension
Termination
above
Air Intake
Collar
Air Trap
VENTING CONFIGURATIONS
12
3 4

18 INSTALLATION PLANNING Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
3.8 Mantel and Facing Requirements
NOTE: Non-combustible material such as brick, tile, marble, or stone
may be placed over the top and side face sections. This material MUST
NOT come in direct contact with replace, or cracking of face material
will occur.
CAUTION: If using ‘thin’ brick, non-combustible facing material, such
as rock board or metal, must be used. Do not attach directly to replace
face.
• Facing material should overlap side framing member
approximately 1/4” to 3/8” (6mm to 10mm).
• Frame in replace. Maintain necessary clearances to
combustibles.
• Framing materials should not come in actual contact with the
replace.
• If installing a mantel (combustible material may be used), follow
Figure 3.8 below.
Non-combustible zone
21”
(533mm)
18”
(457mm)
15”
(381mm)
12”
(305mm)
9”
(229mm)
6”
(152mm)
14” (456mm)
12” (305mm)
10” (254mm)
8” (203mm)
6” (152mm)
4”
(102mm)
2” (51mm) 3” (76mm)
3/4” (19mm) 1” (25mm)
38¼”
(972mm)
72”
(1.83m)
Top of Fireplace Face
Figure 3.8, Mantel Requirements Nominal 2” x 4” framing used

#Z-42 & #Z-42-CD R.18 December 2020 Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces OPTIONAL FAN INSTALLATION 19
4.0 OPTIONAL FAN INSTALLATION
4.1 #600-1 Optional Fan Kit
ATTENTION: Installation of this fan kit should be done only by a
qualied installer.
WARNING: Verify household breaker is shut o prior to working on
any electrical lines. Disconnect all electric power from replace before
performing any of these tasks.
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.
Code approved line voltage wiring 14 gauge or better must be used
when wiring the optional #600-1 fan kit assembly. Refer to local codes
for specic requirements.
This optional fan kit includes:
(2) 110 CFM fan with temperature control switch and 4’ (1.22m)
fan cord
(4) 1/4” nuts
4.1.1 Fan Shield Installation
(2) fan shields are included in the replace components packet.
These shields divert more air circulating through the fans upward,
increasing the volume of air exiting through the upper grill.
1. Slide one corner of a fan shield onto the front chute on each fan,
making sure the ‘V’ portion of the shield is inside the chute.
2. Slide fan shield down onto the chute.
4.1.2 Fan Kit Installation
Fan wiring is on the next page.
1. The lower grill must be removed from the replace prior to
installation of this fan. Refer to Section 6.2 Grill Set Installation
and Removal on page 27.
2. Insert fans through lower grill opening and push to back. Align
mounting slots in fan brackets onto mounting studs. Secure with
nuts.
3. Connect fan wiring by attaching connectors on right fan onto
terminals on left fan.
4. From inside lower right grill opening, loosen screws securing
removable access panel (with electrical box & romex connector
installed). Remove access panel.
5. Insert 110V - 120V wiring (with ground) through romex
connector and wire to the speed control / receptacle assembly,
matching black (hot), white (neutral), and green (ground) wires
to corresponding wires on speed control / receptacle assembly.
6. Secure speed control / receptacle assembly to the electrical box
with (2) screws provided.
7. Re-install electrical access panel. Tighten screws.
8. Attach temperature control switch to bottom of rebox.
9. Plug cord into electrical box receptacle.
10. Turn speed control counter-clockwise until it ‘clicks’. This is the
OFF position.
11. Turn speed control ON by turning knob clockwise past the ‘click’ -
this is the highest setting.
12. Re-install lower grill. Refer to Section 6.2 Grill Set Installation and
Removal on page 27.
4.1.2.1 Temperature Control Switch Position
Before adjusting temperature control switch, unplug 3-prong plug
on fan cord from receptacle. Adjust position of temperature control
switch to a warmer location under rebox to turn fan ON sooner or
move it to a cooler location under rebox to turn fan ON later. Fan will
turn on when sensor in temperature control switch reaches
110° F and will turn OFF when sensor reaches 90° F. After adjustment,
plug 3-prong plug on fan cord into receptacle.
FAN SHIELD
Figure 4.1, Fan Shield Installation (1) shown

20 OPTIONAL FAN INSTALLATION Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces #Z-42 & #Z-42-CD R.18 December 2020
LEGEND
ABlack (hot) from incoming line
BBlack from speed control
CWhite (neutral) from incoming line
DWhite (neutral) from receptacle
EGround (bare) from incoming line
FGround (green) from receptacle
GWhite from speed control
HBlack from receptacle
Figure 4.2, Fan Wiring and Connections
110-120 V
60 Hz
ELECTRICAL BOX
INCOMING
WIRING
SPEED CONTROL
TEMPERATURE
SWITCH
RECEPTACLE ASSEMBLY
B
A
G
H
D
F
E
C
INCOMING LINE
110-120V 60Hz
ACCESS PANEL
ROMEX CONNECTOR
ELECTRICAL BOX
RECEPTACLE / SPEED CONTROL
ASSEMBLY
Connect A to B, C to D, E to F, and G to H
GROUNDING
SCREW
GROUND
WIRE