Kozi MX2 User manual

Page 1
CAUTION:
Read all instructions carefully before starting the
installation or operating the heater. Failure to follow
these instructions could result in property damage,
bodily injury or even death. Contact local building
or fire officials about restrictions and installation
inspection requirements in your area.
Save this manual for future reference.
KOZIKOZI
KOZIKOZI
KOZI PREVIA CAST IRON
PELLET STOVE
Manufactured By:
APR Industries Ltd.
1354 Waverley Street
Winnipeg, Manitoba, R3T 0P5
Canada
Lithoid in Canada
Rev Apr 2008
WWW.KOZISTOVES.COM
OWNER’SMANUAL
MX2TM CONTROL EQUIPPED
WOOD PELLET BURNING HEATER
* INSTALLATION * OPERATION * SERVICE * PARTS *

Page 2
THISPAGEHASBEENINTENTIONALLYLEFTBLANK

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Ifyouhaveanyquestions,commentsor concerns
regarding your new KOZI pellet stove, please
contact your local dealer orAPR Industries Ltd. at
WWW.KOZISTOVES.COM or [phone]
CAUTION: Stove has moving parts.
Disconnect power before servicing.

Page 4
TableOfContents
I. SAFETY FIRST!!! .................................................................................................................................5
II. INSTALLATION ..................................................................................................................................7
1. Clearance to Combustibles ........................................................................................................7
1.1 Installation Clearances ......................................................................................................7
1.2 Other Clearances and Recommendations .........................................................................9
2. Electrical Requirements .......................................................................................................... 10
3. Fuel Requirements .................................................................................................................... 10
3.1 Physical Properties ....................................................................................................... 10
3.2 Fuel Storage ................................................................................................................... 10
4. Location of the Heater ............................................................................................................. 11
5. Typical Installation Configurations ...................................................................................... 11
6. Venting System .......................................................................................................................... 12
6.1 Exhaust Vent Pipe Requirements .................................................................................. 12
6.2 Exhaust Vent Termination Requirements ....................................................................... 13
6.3 Combustion Air Intake Requirements ........................................................................... 14
7. Mobile Home Additional Installation Requirements ........................................................... 15
7.1 Typical Mobile Home Installation Configuration ........................................................ 15
7.2 Recommendations for Mobile Home Installation ......................................................... 16
7.3 Mobile Home Combustion Air Intake Requirements ................................................... 16
7.4 Exhaust Vent Requirements ........................................................................................... 16
7.5 Other Mobile Home Installation Requirements ............................................................ 16
III. OPERATION.................................................................................................................................... 17
1. General overview ...................................................................................................................... 17
2. Safety features .......................................................................................................................... 18
3. Electric Igniter .......................................................................................................................... 18
4. MX2TMControl ....................................................................................................................... 18
4.1 Basic Description ..........................................................................................................18
4.2 “AUTO, HIGH/LOW, MANUAL Switch” .................................................................. 18
4.3 “ON/OFF” Button ........................................................................................................ 19
4.4 “HEAT SELECT” Button & Bar Graph........................................................................ 19
4.5 “AUGER” Button......................................................................................................... 19
4.6 “FAN” Button ...............................................................................................................20
4.7 “TRIM” Button ............................................................................................................. 20
4.8 Wall thermostat, wall switch or other switching device. ............................................. 20
4.9 Damper Control .............................................................................................................21
4.10 Starting (lighting) your Heater for the First Time ...................................................... 21
4.11 Starting (lighting) your Heater ................................................................................... 21
4.12 Stopping your Heater .................................................................................................. 22
4.13 Adjusting your Heater ................................................................................................ 22
IV. MAINTENANCE & CLEANING................................................................................................... 23
V. TROUBLE SHOOTING GUIDE......................................................................................................28
1. Trouble Shooting ...................................................................................................................... 28
2. Corrective Actions .................................................................................................................... 29
2.1 Proof Of Flame Failure ................................................................................................... 29
2.2 Pressure Switch Failure ................................................................................................ 29
2.3 Manual Reset Thermal Disk Failure .............................................................................. 29
2.4 Ignition Failure ............................................................................................................. 30
2.5 Overheating ................................................................................................................... 30
2.6 Lack of Air. .................................................................................................................... 30
2.7 Excess air. ...................................................................................................................... 31
VI. DIAGRAMSAND PARTS LIST ..................................................................................................... 32
1. KOZI MX2TM Control CircuitDiagram ............................................................................... 32
2. Stove Cross Section .................................................................................................................. 33
3. Equipment Compartment ........................................................................................................ 34
4. Parts List ................................................................................................................................... 36
VII. WARRANTY ................................................................................................................................... 37

Page 5
I. SAFETYFIRST!!!
This heater is suitable for both mobile home and conventional home installation. Read all
instructions carefully before starting installation. Save this manual for future reference.
1. Read these instructions carefully. Failure to follow them could cause a
malfunction of the heater, damage to the heater, property damage, bodily
injury or even death.
2. Familiarize yourself with the heater’s operation. (See “Operation” section)
If you are not sure, ask your dealer for explanations on your heater’s
proper operation.
3. The burn pot of this heater is designed to burn premium grade wood
pellets. Pellets with too much fines and saw dust must be screened before
use. DO NOT USE WET PELLETS. Refer to the “Fuel Requirements”
section for more information.
4. Oil the circulation fan motor bearings every 6 months. See “Maintenance”
section for more details.
5. Check your local building codes regarding restrictions or installation
requirements. All installations must comply with local building codes.
6. This heater requires a floor protector beneath the heater and extending a
minimum of 6 inches (150mm) in front of the heater. This is to catch any
spillage which may occur during opening and closing of the doors. See
figure 1 for more information.
7. Use only UL/ULC listed Type PL or Type L venting for the exhaust
system. This heater is designed for use with 3-inch (76 mm) vent pipe.
Avoid long runs and too many bends. It may be necessary to increase the
size of the vent pipe to 4 inch (102 mm) if long runs and too many bends
are unavoidable. See “Venting System” section for more information.
8. Combustion of wood pellet fuel leaves ash in the heater and venting
system. These ashes must be removed from the heater and venting on a
regular basis (approximately once a week, more frequently for high ash
content fuels). See “Maintenance” section for more information. The
entire system must also be cleaned at the start of each heating season. A
yearly inspection of the venting is highly recommended.

Page 6
9. The heater must be turned off and allowed to cool before cleaning. Make
sure there are no hot ashes or embers present. Use a brush and scoop to
clean. Only use vacuum cleaners specifically designed for use with hot
ashes. Place all ashes in a sealed metal container with a tight, non
flammablefitting lid.
10. Store all pellet fuel in a sealed metal container at a safe distance (at least
36 inches / 1 meter) away from the heater. DO NOT place the fuel
within the installation clearances of the stove or within the space needed
for ash removal and start up.
11. This heater is POWER VENTED. The vent pipes have positive pressure
during operation. It is IMPERATIVE that all joints in the venting system
be SEALED to prevent any leakage of exhaust gases inside the house.
All joints must be sealed using high temperature silicone sealer (RTV).
Aluminum tape is not an adequate sealant.
12. Use of outside combustion air is highly recommended and is mandatory
in mobile home installations. Connect the air intake of the heater to the
exterior of the building with a noncombustible metal pipe with a
minimum diameter of 2 inches (50 mm) (Use APR Part No AK100). Use
of plastic pipe is not permitted.
13. This appliance is wired and grounded according to the CSA C22.1 code
for Canada and the NFPA70 code for the USA. Also, this heater meets
the fuel burning appliance installation codes NFPA 211 in the USA and
CSA B365 in Canada.
14. Do NOT operate the heater with the door open. Make sure the door and
any other opening in the stove are closed tightly during operation.
Inspect the gaskets of the door and other openings periodically to make
sure they are in good condition.
15. Replace broken or defective components only with parts provided by the
manufacturer. See WWW.KOZISTOVES.COM or contact your local
dealer to find out how to purchase replacement parts.
16. Follow this manual carefully for proper installation. If you are uncertain,
call your dealer. Most dealers have qualified and trained installers. We
highly recommend the use of their services.

Page 7
II. INSTALLATION
1. ClearancetoCombustibles
1.1 Installation Clearances
Please refer to the following figures for all clearances to combustibles. Please note that
these clearances are for your KOZI heater only. Each venting manufacturer/supplier has
their individual clearances which must also be respected.
Figure2. Sidewall Clearances
Figure 1. KOZI Cast Iron Stove noncombustible floor
protector.
Figure 3. Alcove Clearances
6" (150 mm)
Minimum
26.5" (675 mm
)
Minimum
28"
(710 mm)
34" (865 mm)
Minimum
Floor Protector
A
SIDEWALL
B
BACKWALL
7" (178mm)
CENTER TO VENT C
BACKWALL
C
BACKWALL
A
ll clearances are minimum requirement
s
See table for actual dimensions
D
F Maximum
I
H
G
E

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Table 1. Clearance Dimensions
Additional installation information can be found in the “Typical Installation Configura-
tions” section and your venting manufacturer/supplier’s literature.
INSTALLATION COMMENT: We recommend sufficient space be
provided (minimum 20 inches/500 mm) on each side of the heater to service
the equipment area. If this is not possible, a provision must be made to pull
the heater out for service.
Dimension Description Previa
AUnit to side w all or side
facing 5" (125 mm)
BUnit to back w all 1 " (25 mm)
CCorner of unit to w all 1 " (25 mm)
DAlcoveheight 48 " (1220 mm)
EOverall unit height 30 " (760 mm)
FAlcove depth (Maximum) 30 " (760 mm)
GAlcove width 34" (865 mm)
HFloor to centerline air intake 5.125 " (130 mm)
IFloor to centerline exhaust 14.5" (370 mm)
JUnit to mantle N/A
KUnit to top facing N/A
All dimensions are minimum dimensions unless marked.

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1.2 Other Clearances and Recommendations
1. This heater must be mounted on a noncombustible material, placed
underneath the heater and extending a minimum of 6 inches (150 mm) in
front of the heater.
2. Clearances can ONLYbe reduced by means approved by local building or
fire officials in your area.
3. A safety certification label has been attached to the back of the heater. A
sample label is shown here to help you locate this label on your heater.
Please read all information on your heater’s label. All information on the
certification label supersedes any information contained in this manual.
Figure 5 Certification Label

Page 10
2. ElectricalRequirements
1. This heater is an electrical appliance. The NorthAmerican versions of
this appliance require 120 Volts, 60 cycle and 3 Amps of electrical power.
The European versions of this appliance require 230 Volts, 50 cycles and
2Amps of electrical power. All heaters with an electric igniter require an
additional 300 watts of electrical power during the start up sequence.
2. The heater comes with a 5 ft. (1.5 M) long, grounded, electrical cord
suitable to plug into any standard residential electrical outlet. The
electrical outlet must be grounded.
3. When installed in a mobile home, the heater must be grounded to the steel
chassis of the home (unless this is not required by local code).
3. Fuel Requirements
3.1 Physical Properties
Your heater is very sensitive to fuel quality. Every effort should be made to use only the
best pellet fuel available in your area. This heater is designed for premium grade, 1/4 inch
(6.35 mm) or 5/16” (7.94mm) diameter wood pellets only. The following should assist
you in selecting the proper fuel.
If you find your fuel has too much fines and saw dust, the fuel may be screened before
use. DO NOT USE WET PELLETS under any circumstance. Longer fuel may cause
bridging of the auger and result in erratic feeding or jamming. Fines, binders, ash, moisture
will all cause your heater to plug up and not burn efficiently. “Poor” fuels require more
frequent cleaning; the ashtray must be emptied and the burn pot must be cleaned on a
weekly/possibly daily basis. Please refer to the “Maintenance” section for further
instructions on cleaning your heater.
3.2 Fuel Storage
All pellet fuel should be stored in a clean dry place and at a safe distance (at least 36
inches / 1 meter) away from the heater. DO NOT place the fuel within the installation
clearances of the heater or within the space needed for ash removal or starting of the
heater.
Burning any fuel other than wood pellets as described above
will void your heater’s warranty and may void any insurance.
Good Fuel
Made from hard or soft wood
Dry
Clean
1/4” or 5/16” diameter
1” or less in length
Low ash (less than 1%)
Bad Fuel
Moist or wet
Lots of fines or sawdust
Longer than 1”
Contains binders (helps glue the
fuel together)
High ash content (greater than 1%)
Not made of wood

Page 11
(although this installation is permitted, a 3’ (1
m) vertical rise is strongly recommended)
4. LocationoftheHeater
Before proceeding with the installation, the following sections should be reviewed:
Section 4: Location of the Heater
Section 5: Typical Installation Configurations
Section 6: Venting System
When selecting a location for your new heater consider the following:
a. Clearance to combustibles. d. Power within 5 feet (1.5 m).
b. Sufficient room to service the unit. e.Access for exhaust venting.
c.Access for outside combustion air. f. EVL not exceeding 25 ft. (7.6 m).
d. NOT approved for bedroom installations. See Exhaust Vent Requirements.
5. TypicalInstallationConfigurations
The following figures describe some typical installations. Variations of these are possible.
Common sense, safety and compliance with local codes must be respected in any
variation.
Figure 9. Free standing through the wall
and the roof installation
Figure 8. Free standing through the roof
installation
Figure 6. Free standing through the wall
and up installation Figure 7 Free standing through the wall
installation
FLOOR
COMBUSTION AIR
INTAKE OR CHECK
VALVE
THIMBLE
TEE WITH
CLEANOUT
END
CAP
VERTICAL
RISER
12"
305mm
minimum
VENT SUPPORTS
AS REQUIRED
FLOOR
COMBUSTION AIR
INTAKE OR CHECK
VALVE
THIMBLE
END
CAP
12"
305mm
minimum
COMBUSTION AIR
INTAKE OR CHECK 
VALVE
TEE WITH
CLEANOUT
FLOOR
PIPE MANUFACTURER'S
THIMBLE OR FIRE STOP.
KEEP ATTIC INSULATION
AWAY FROM PIPE.
RAIN CAP
FLASHING
3"
76mm
FLOOR COMBUSTION AIR
INTAKE OR CHECK
VALVE
THIMBLE
TEE WITH
CLEANOUT
RAIN CAP
FLASHING
3" (76 mm)
CLEARANCE
WALL SUPPORT
BRACKET
PELLET VENT

Page 12
Figure 11. Free standing through a
masonry chimney installation
Figure 10. Free standing basement
installation
6. VentingSystem
6.1 ExhaustVent Pipe Requirements
Your KOZI pellet heater works under negative pressure (vacuum). The exhaust fan of
your stove pulls air from the air intake, through the stove and pushes it out the venting.
As this air passes through the burn pot it is used to burn the pellets. Proper vent pipe
sizing is very important to the proper operation of your stove. A proper size ULC/UL
listed type PL or L venting should be used to provide the least resistance for movement
of the combustion air.
Your KOZI pellet heater is certified for 3 and 4 inch exhaust venting. 3 inch venting is
normally sufficient for most direct vent installations. Installations with several elbows,
long horizontal and/or vertical runs may add too much resistance to air flow and may
create burn problems. The use of 4 inch venting in these types of installations will reduce
the possibility of burn problems. A simple technique called ‘EQUIVALENT VENT
LENGTH (EVL)’ can be used to determine whether 3 or 4 inch vent pipe should be used.
To calculate EVLuse the following formula:
for each 90° Elbow or T fitting = add 5 EVL
for each 45° Elbow = add 3 EVL
for each Horizontal run of vent = add 1 EVL per foot of horizontal venting
for each Vertical run of vent = add 1/2 EVL per foot of vertical venting
COMBUSTION AIR
INTAKE OR CHEC
K
VALVE
THIMBLE
TEE WITH
CLEAN OUT
BASEMENT FLOOR
MINIMUM 3" (76 mm)
MAIN FLOOR
EARTH
3"
76 mm
NON COMBUSTIBL
E
FLOOR PROTECTO
R
COMBUSTION AIR
INTAKE OR CHECK
VALVE
RAIN CAP SEALED COVE
R
PLATE
TEE WITH
CLEANOUT
STAINLESS STEEL
SINGLE WALL PIPE
PIPE
SUPPORT
CAUTION: EVL CANNOT EXCEED 25 ft. (7.6 meters). Installations
using an EVL exceeding 25 ft. (7.6 meters) are not permitted.

Page 13
YOU MUST USE APPROPRIATE 4” VENTING IF:
The EVL is 7 or more AND you are at or above an altitude of 3000 ft.
OR
The EVL is 15 or more
If in doubt, use 4” venting. This will reduce the possibility of future burn problems.
DO NOT USE MAKESHIFT MATERIALS OR MAKE COMPROMISES
IN THE INSTALLATION. IT IS A FIRE HAZARD.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING
SYSTEM OF THIS HEATER
DO NOT CONNECT THIS HEATER TO A CHIMNEY FLUE SERVING
ANOTHER APPLIANCE
The vent pipes are on the exhaust side of the exhaust fan and are under pressure. Care
must be taken to ensure that all the joints are completely sealed to prevent any leakage of
exhaust fumes and smoke into the house. If you smell smoke, the venting has not been
properly sealed. Use only high temperature RTV silicone for sealing. Aluminum tape is
not considered an adequate sealant. At least 3 screws are needed for securing all vent pipe
joints.
The venting of this heater is not allowed to pass through any closets, concealed spaces,
floors, ceilings or attic spaces. If the venting must go through a wall or combustible
partition, the installation must conform to the Installation Code for Solid Fuel Burning
Appliance and Equipment CAN / CSA -B365. For more detailed venting information,
please refer to your venting manufacturer’s instructions.
6.2 ExhaustVentTermination Requirements
1. It is highly recommended that the venting include a minimum 3’ vertical
rise before termination. This will help prevent any odor of smoke in the
house during a power failure.
2. The exhaust vent must terminate into an open space. Under no circum-
stances is the vent allowed to terminate into closed or semi-closed
spaces. Venting into a garage, under a sun deck, porch or any other space
where the concentration of fumes may occur is prohibited.
3. The exhaust vent must be at least:
* 4 feet (1.2 m) below
* 4 feet (1.2 m) horizontally from
* 1 foot (0.3m) above
any opening in the building such as doors, windows, ventilation air

Page 14
intakes, etc.
4. The exhaust vent opening must be a minimum of:
* 12 inches (0.3m) from the ground
* 24 inches (0.61m) from any combustible surface i.e. fence, plant, etc.
* 7 feet (2.1 m) from any public walkway
5. The exhaust air is EXTREMELY HOT. Caution must be taken to avoid
contact with children, people, plants, animals, or any other object that
may be affected by heat. It is recommended to use a vertical pipe to
discharge the hot air at a safe elevation.
6. Vertical installations must have an approved vertical vent cap and
horizontal installations must have an approved horizontal vent cap.
Areas where severe wind conditions exist and vent caps are exposed to
unprotected open areas additional protection (especially in horizontal
installations) must be provided.
6.3 CombustionAir Intake Requirements
There are 2 methods of supplying the heater with combustion air. They are as follows:
1. Room Air: Conventional homes may use room air for combustion. Where
room air is used, the exhaust pipe must incorporates a minimum 3’
vertical section immediately adjoining the heater. It is highly recom-
mended that the total exhaust vertical rise be longer than the total
horizontal run and that the majority of the vertical rise be as close to the
heater as possible..
2. Outside Air: All installations can be connected to the exterior of the
building using a noncombustible metal pipe, with a minimum 2 inch
(50mm) internal diameter or by using APR Part No: AK100 (Air Intake
Kit). Alarger diameter air intake pipe may be required if the length of
intake exceeds 3’ (1 meter) or has several bends. Use of plastic pipes are
not permitted.
In some installations, outdoor combustion air may be needed to ensure proper perfor-
mance. If your heater burns poorly, experiences roll-out or back-drafts, outside combus-
tion air may be required.
The following restrictions apply to any and all installations:
1. Use of plastic pipes is not permitted under any circumstance.
2. The combustion air intake must terminate into a vented space, i.e. outside,
vented attic, vented crawl space. This heater cannot draw air from a
closed space such as a closed garage, airtight crawl space or any other
sealed room.

Page 15
3. The elevation of the combustion air intake must be below the exhaust
vent. An elbow may be used to lower the air intake point below that of
the exhaust vent.
4. Excessive lengths and elbows on the air intake pipe will cause airflow
restrictions. Aminimum of 2” (50 mm) or larger venting should be used
for lengths exceeding 3’ (1 meter). Increase the venting size as needed.
7. MobileHomeAdditionalInstallationRequirements
7.1 Typical Mobile Home Installation Configuration
The following figures describe some typical installations for mobile homes. Variations of
these are possible. Common sense, safety and compliance with local building codes must
be respected in any variation.
INSTALL ALL VENTING AT CLEARANCES
SPECIFIED BY THE VENT MANUFACTURER
Figure 12. Mobile home installation
through wall; interior rise Figure 13. Mobile home installation through
wall; exterior rise
Figure 14. Mobile home installation
through roof
(although this installation is permitted, a 3’ (1 m) vertical rise
is strongly recommended)
Figure 15. Mobile home installation through
wall
ROOF
COMBUSTION AIR
INTAKE
TEE WITH
CLEANOUT
VERTICAL RISE
R
MINIMUM 3 '
(915 mm)
MINIMUM 3"
(76 mm)
RAIN CAP FLASHING
FLOOR
3" (76mm)
MINIMUM 1"
(25mm)
MINIMUM 1"
(25mm)
ROOFROOF
COMBUSTION AIR
INTAKE
COMBUSTION AIR
INTAKE
FLOORFLOOR
BRACKET SUPPOR
T
BRACKET SUPPOR
T
TEE WITH
CLEANOUT
TEE WITH
CLEANOUT
END CAPEND CAP
THIMBLE
VERTICAL RISER
MINIMUM 3'
(915 mm)
ROOF
COMBUSTION AIR
INTAKE
TEE WITH
CLEANOUT
VERTICAL
MINIMUM 3'
(915 mm)
END CA
P
MINIMUM 3"
(76 mm)
THIMBLE
MINIMUM 1"
(25mm)
ROOF
COMBUSTION AIR
INTAKE
FLOOR
TEE WITH
CLEANOUT
END CAP
THIMBLE
MINIMUM 13"
(305 mm)

Page 16
7.2 Recommendations for Mobile Home Installation
1. Make sure there is an effective vapor barrier where the venting penetrates
to the outside of the mobile home. Seal all openings in the vapor barrier
as required.
2. Make sure the mobile home has adequate ventilation. Your stove is a solid
fuel burning appliance. As such, there is a possibility of smoke entering
the room. By making sure the mobile home is adequately vented, you
reduce the chances of smoke remaining in the mobile home.
3. Make sure the venting is properly installed and sealed. Leaking vent
pipes may set off smoke detectors in the mobile home. Also, some fuels
may produce carbon monoxide which, in large amounts, can be fatal.
Make sure the venting is installed properly to prevent leakage of carbon
monoxide into the mobile home.
4. If parts become damaged or need to be replaced, please contact your local
dealer or visit WWW.KOZISTOVES.COM. Do NOT replace parts with
any other parts not specified by your local dealer or manufacturer.
7.3 Mobile Home CombustionAir Intake Requirements
All mobile home installations MUST use combustion air from the outside. This heater
must be connected to the exterior of the mobile home using a noncombustible metal pipe,
with a minimum 2 inch (50 mm) diameter. APR Industries Ltd. part # AK100 (Air Intake
Kit) can be used for this purpose. Use of plastic pipes are not permitted. Please read
the “Combustion Air Intake Requirements” section for more information.
7.4 ExhaustVent Requirements
Venting a KOZI pellet burner for a mobile home is similar to that of a conventional
home. Please refer to the “Typical Mobile Home Installation Configuration” section for
typical venting configurations the “Venting System” for vent termination and other
requirements. It is highly recommended that 3’. minimum of vertical venting be used (as
shown in Figure 12 and Figure 13). This will reduce the chance of smoke spillage into the
mobile home in case of a power failure.
7.5 Other Mobile Home Installation Requirements
1. The heater must be securely anchored to the floor of the mobile home.
There are 4 holes located on the legs of the stove. Use lag bolts (not
supplied) in these holes to anchor the stove to the floor of the mobile
home.
2. There must be a noncombustible floor protector placed underneath the
heater and extending a minimum of 6” (150 mm) in front of the heater

Page 17
(see “Clearance to Combustibles” section for more information).
3. This heater can not be installed in any sleeping room of the mobile home.
4. The heater must be grounded to the steel chassis of the mobile home
(unless this is not required by local code).
WARNING: DO NOT INSTALL IN A BEDROOM OF A MOBILE HOME
III. OPERATION
1. Generaloverview
The first step in understanding your new KOZI heater is to familiarize yourself with its
operation. Your heater has 3 main systems: Feed, Combustion and Circulation. These 3
systems work together to produce enough heat for your room. The feed system uses an
auger to “feed” the pellet fuel into the burn pot. The combustion system provides the air
for the fuel to burn and pushes the “smoke” outside through the vent pipes. The
circulation system takes cold air from the room and pushes it through the heat exchanger
where it will warm up and flow back into the room as hot air. These 3 main systems are
all control by the MX2TM control system (see Figure 16). The MX2TM control system
will be described in more detail later.
CAUTION: THE STRUCTURAL INTEGRITY OF THE FLOOR, WALL AND
ROOF OF THE MOBILE HOME MUST BE MAINTAINED.
Figure 16. MX2TM control
FAN
AUGER
ON/OFF
TRIM
MODE SELECT
INDICATOR
LIGHT
MODE SELECT
(AUTO,
HIGH/LOW,
MANUAL)
HEAT SELECT
INDICATOR
LIGHT
HEAT SELECT

Page 18
2. Safetyfeatures
1. Pressure switch: This safety device is used to turn the feed off if pressure
is lost in the stove.
2. Circulation fan override: If your pellet heater begins to overheat, this
safety device switches the circulation fan to the highest possible setting
to try to cool your heater down to a safe temperature.
3. High limit/manual reset thermal disk: If the Circulation fan override fails
to cool the heater down fast enough, this thermal disk will turn the feed
off. This safety device guards against your heater overheating. If this
thermal disk trips, the right side panel will need to be opened and the
thermal disk reset. See “Maintenance” and “Troubleshooting” sections
for more information.
3. ElectricIgniter
The KOZI Previa Cast Iron pellet stove is factory equipped with an electric igniter. The
electric igniter is a convenient way of lighting the fire in your heater without the use of
lighter gels or starter fuels. Ask your dealer if an electric igniter is right for you.
4. MX2MX2
MX2MX2
MX2TM Control
4.1 Basic Description
The MX2TM control is a digital control that uses a computer to control the operation of
your heater. You should be familiar with all of the buttons on this control before using
your heater. Each button and their function are described here.
4.2 “AUTO,HIGH/LOW,MANUALSwitch”
Your pellet heater is capable of operating in 3 modes ;”AUTO”, “HIGH/LOW” and
“MANUAL”. Figure 17 will help you determine which mode is suitable for use in your
home. More information on each of the modes is provided later.
Figure 17, Mode selection.
Switch Position Igniter
Required Thermostat Required Description
AUTO* Yes Yes Turns Heater ON and OFF based on wall thermostat,
remote control, wall switch or other switching device.
HIGH/LOW Optional Yes Switches heater from user setting to factory LOW setting based on wall thermostat, remote control, wall switch or
other switching device.
MANUAL Optional No Relies on a person to press the ON/OFF button located on the control pannel. Will automatically light if equiped with
electric igniter.
Mode Selection Guide
* CAUTION: May result in shortened igniter life. See complete mode description.

Page 19
a. “AUTO” Mode: With the switch in this position, your heater will turn
itself on and off based on an externally wired switch. The most
common use of this mode is with a wall thermostat. When wired to a
wall thermostat, the heater will automatically light itself when the room
temperature falls below the thermostat setting and will automatically
turn itself off when the temperature reaches the thermostat setting. This
mode can also be used with a wall switch or remote controls. Consult
your local dealer or visit WWW.KOZISTOVES.COM for more
information on available options.
Please note that “AUTO” mode, when used in conjunction with a wall thermostat, may
result in “reduced” igniter life. Always use your stove on the lowest possible heat setting
when in this mode. This will help reduce the number of ignition cycles and will help
prevent premature igniter failure.
b. “HIGH/LOW” Mode: With the switch in this position, your heater will
alternate from a factory preset low to the setting you have chosen with
the “HEAT SELECT” button (see {“HEAT SELECT: Button} section
for more information). This mode is almost exclusively used with a wall
thermostat and is highly recommended since it can create substantial fuel
savings.
c. “MANUAL” Mode: When used in this mode, your stove is controlled
from the control panel only. When the heater is in the “MANUAL”
mode, the heater will not respond to any external switch (Thermostat).
4.3 “ON/OFF”Button
This button allows you to turn the stove on and off. Once pressed, the stove will go
through a start-up sequence and the ON/OFF light will blink.. During this time, the feed
rate is preset and the “HEAT SELECT” button is disabled. Once the stove is warm
enough, the “ON/OFF” light will stop blinking and you will be able to change the heat
setting with the “HEAT SELECT” button as described next.
4.4 “HEATSELECT”Button &Bar Graph
There are 5 possible heat settings for your heater. Each setting is indicated in the bar
graph; 1 being the lowest, 5 being the highest. Pressing the “HEAT SELECT” button will
change the heat setting as indicated in the bar graph. Each time the button is pressed,
your heater will go to the next higher heat level (from 1 to 2, 2 to 3 etc...). Once the heat
level reaches the highest setting (5) and the “HEAT SELECT” button is pressed again, the
heat level will return to the low setting (1).
Please note that during the start-up period, the “HEAT SELECT” button can be set.
However, the heater will not operate at the desired setting until it has warmed up
properly. Also, your heater will always remember which heat setting was used last and
return to that setting next time the stove is turned on (Power failures will result in this
setting being lost).
4.5 “AUGER”Button
Your heater uses an auger system to feed fuel into the burn pot. When the auger system
is working, the “AUGER” light will be on. During normal operation, this light should
blink periodically. Holding the “AUGER” button will run the auger system continuously.

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This button should only be used to fill the auger with fuel. Using this button during
normal operation will cause too much fuel to fall into the burn pot and may result in
damage to the heater or an unsafe situation.
4.6 “FAN” Button
During normal operation of your heater, the circulation fan (blows air into the room) will
run at a preset speed depending on the heat setting chosen (see “HEAT SELECT”
button). When the “FAN” button is pressed once, the circulation fan will operate on the
highest setting. Pressing the “FAN” button again will slow the speed of the circulation
fan to the next slowest speed. There are a total of 5 set speeds programmed on the
control board. Once the lowest speed is reached, pressing the “FAN” button brings the
circulation fan back up to the highest speed. Changing the HEAT SELECT setting will
change the circulation fan speed back to the preset level for that desired HEAT SELECT
setting. 4.7 “TRIM” Button
This button is used to compensate for fuel variations at the lowest heat level only. With
the heater at the lowest heat level (1) pressing this button once will increase the feed rate
to slightly above the normal low setting. At this “TRIM” setting, the (1) and (5) lights
will be on. Pressing the “TRIM” button again will cause the feed rate to decrease slightly
below the normal low setting. At this “TRIM” setting, the (1) and (4) lights will be on.
Pressing the “TRIM” button again will return the feed rate to the normal low setting. At
this “TRIM” setting, only the (1) light will be on.
4.8 Wall thermostat, wall switch or other switching device.
The MX2TM control is capable of using an external switch (such as a millivolt wall
thermostat) to turn the stove on and off. Any millivolt rated switching device can be used
with this control. The switch/thermostat must be wired to the terminals as shown in
Figure 18.
Figure 18. Wall thermostat terminals
Thermostat Wires
KOZI Wall
Thermostat MX Control
Board
Connect Thermostat Wires Here