SMG ComfortBilt HP21 User manual

WARNING
PLEASE READ THIS ENTIRE MANUAL
BEFORE INSTALLATION AND USE OF
THIS PELLET FUEL-BURNING ROOM
HEATER. FAILURE TO FOLLOW
THESE INSTRUCTIONS COULD
RESULT IN PROPERTY
DAMAGE,BODILY INJURY OR EVEN
DEATH
CAUTION
DO NOT DISCARD!
●IMPORTANT OPERATING AND AINTENANCE
INSTRUCTIONS INCLUDED.
●SAVE THESE INSTRUCTIONS AND LEAVE
THIS MANUAL WITH ANY PARTY RESPONSIBLE
FOR USE AND OPERATION
CAUTION
CONTACT LOCAL BUILDING OR FIRE
OFFICIALS ABOUT RESTRICTIONS AND
INSTALLATION INSPECTION
REQUIREMENTS FOR YOUR AREA.
Operator’s Manual
HP21
Pellet Stove
HP21
Revised 04-05-15
©2015 SMG Hearth and Home LLC
All Rights Reserved

Operator’s Manual
HP21 Pellet Stove
~ 2 ~
WARNING
PLEASE READ THIS ENTIRE MANUAL BEFORE
INSTAL-LATION AND USE OF THIS PELLET
FUEL-BURNING ROOM HEATER. FAILURE TO FOLLOW
THESE INSTRUCTIONS COULD RESULT IN PROPERTY
DAMAGE, BODILY INJURY OR EVEN DEATH.
●DO NOT STORE OR USE GASOLINE OR
OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICIN
ITY OF THIS OR ANY OTHER APPLIANCE.
●DO NOT OVERFIRE - IF ANY EXTERNAL
PART STARTS TO GLOW, YOU ARE OVERFIRING.
REDUCE FEED RATE. OVERFIRING WILL VOID THE
WARRANTY.
●COMPLY WITH ALL MINIMUM CLEARANCES
TO COMBUSTIBLES AS SPECIFIED. FAILURE TO COMPLY
MAY CAUSE A HOUSE FIRE
WARNING
HOT! DO NOT TOUCH. SEVERE BURNS MAY
RESULT. CLOTHING IGNITION MAY RESULT. GLASS
AND OTHER SURFACES ARE HOT DURING OPERATION AND
COOL DOWN.
●KEEP CHILDREN AWAY.
●CAREFULLY SUPERVISE CHILDREN IN SAME
ROOM AS APPLIANCE.
●DO NOT OPERATE WITH PROTECTIVE
BARRIERS OPEN OR REMOVED.
●KEEP CLOTHING, FURNITURE, DRAPERIES
AND OTHER COMBUSTIBLES AWAY.
CAUTION
DO NOT DISCARD!
●IMPORTANT OPERATING AND MAINTENANCE
IN-STRUCTIONS INCLUDED.
●READ, UNDERSTAND AND FOLLOW THESE IN-
STRUCTIONS FOR SAFE INSTALLATION AND OP- ERATION.
●LEAVE THIS MANUAL WITH PARTY
RESPONSIBLE FOR USE AND OPERATION.
CAUTION
CHECK BUILDING CODES PRIOR TO
INSTALLATION. CONTACT THE REGULATING
AUTHORITY PRIOR TO INSTALLATION TO DETERMINE
THE NEED FOR A PERMIT.
●INSTALLATION MUST COMPLY WITH
LOCAL, REGIONAL, STATE AND NATIONAL CODES AND
REGULATIONS
●CONSULT LOCAL BUILDING OR FIRE
OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION
INSPECTION REQUIREMENTS IN YOUR AREA.
CAUTION
TESTED AND APPROVED FOR PELLET FUEL. BURNING
ANY OTHER TYPE OF FUEL VOIDS WARRANTY.

Operator’s Manual
HP21 Pellet Stove
~ 3 ~
WARNINGS AND SAFETY PRECAUTIONS
OWNER’S RESPONSIBILITY
Accurate assembly and safe and effective use of the stove
is the owners responsibility.
●
Read and follow all safety instructions.
●
Carefully follow all assembly instructions.
●
Maintain the stove according to directions and
schedule included in this operators manual.
●
Ensure that anyone who uses the stove Is familiar with all controls
and safety precautions
SPECIAL MESSAGES
Your manual contains special messages to bring attention to potential
safety concerns, stove damage as well as helpful operating and servicing
information. Please read all the information carefully to avoid injury and
stove damage
NOTE: General information is given throughout the manual that may
help the operator in the operation or service of the stove.
IMPORTANT SAFETY PRECAUTIONS
Please read this section carefully. Operate the stove
according to the safety instructions and recommendations outlined
here and inserted throughout the text. Anyone who uses this stove
must read the instructions and be familiar with the controls
This symbol points out important safety
instructions which if not followed could
endanger your personal safety. Read
and follow all instructions in this manual
before attempting to operate this
equipment.
DANGER
DANGER INDICATES A SERIOUS INJURY OR
FATALITY WILL RESULT IF THE SAFETY INSTRUCTIONS
THAT FOLLOW THIS SIGNAL WORD ARE NOT OBEYED.
WARNING
WARNING INDICATES A SERIOUS INJURY OR
FATALITY COULD RESULT IF THE SAFETY INSTRUCTIONS
THAT FOLLOW THIS SIGNAL WORD ARE NOT OBEYED.
CAUTION
CAUTION INDICATES YOU CAN OR YOUR
EQUIPMENT CAN BE HURT IF THE SAFETY
INSTRUCTIONS THAT FOLLOW THIS SIGNAL WORD ARE
NOT OBEYED.
IMPORTANT
IMPORTANT INDICATES HELPFUL INFORMATION
FOR PROPER ASSEMBLY, OPERATION, OR MAINTENANCE
OF YOUR EQUIPMENT.
WARNING
YOU MUST READ, UNDERSTAND AND COMPLY
WITH ALL SAFETY AND OPERATING INSTRUCTIONS IN
THIS MANUAL BEFORE ATTEMPTING TO SETUP AND
OPERATE YOUR STOVE.
FAILURE TO COMPLY WITH ALL SAFETY AND
OPERATING INSTRUCTIONS CAN RESULT IN SERIOUS
PER- SONAL INJURY TO YOU AND/OR BYSTANDERS, AND
RISK OF EQUIPMENT AND PROPERTY DAMAGE. THE
TRIANGLE IN THE TEXT SIGNIFIES IMPORTANT CAUTIONS
OR WARNINGS WHICH MUST BE FOLLOWED.

Operator’s Manual
HP21 Pellet Stove
~ 4 ~
WARNING
WARNING INDICATES A SERIOUS INJURY OR
FATALITY COULD RESULT IF THE SAFETY
INSTRUCTIONS THAT FOLLOW THIS SIGNAL WORD ARE
NOT OBEYED.
•Read this entire manual before you install and use
your new pellet stove. Failure to follow instructions may result
in property damage, bodily injury, or even death.
•Children and adults should be alerted to the hazards
of high surface temperatures and should stay away to avoid
contact to skin and/or clothing.
•Young children should be carefully supervised when
they are in the same room as the stove.
•Clothing and other flammable materials should not be
placed on or near this unit.
•Flammable or explosive liquids such as gasoline,
naphtha, alcohol, or engine oil must
NEVER
be used in
or around stove. These liquids must be stored in a
separate room as the open flame in the fire box could
ignite the fumes of such liquids.
•
DO NOT
burn garbage in this unit. The burning of
other solid fuels such as cord wood or wood chips in this
stove is not permitted. Any fuels not certified which are
burned in this stove will void the warranty.
•
DO NOT
route power cord in high traffic areas. A
power surge protector plugged into a grounded 230 volt
power source is required.
•
DO NOT
install a flue damper in the exhaust venting
system of this unit.
•
DO NOT
connect this unit to a chimney flue
servicing another appliance.
•
DO NOT
install in a sleeping room.
•
DO NOT
connect to any air distribution duct or
system.
•
DO NOT
connect directly to a masonry chimney.
•
DO NOT
terminate vent in any enclosed or
semi-enclosed area, such as; carports, garage, attic, crawl
space, under a sun deck or porch, narrow walkway or closed
area, or any location that can build up a concentration of fumes
such as a stairwell, covered breezeway etc.
•
NEVER
touch door latches while stove is in operation;
they get extremely hot.
WARNING
PROPER INSTALLATION OF THIS STOVE IS NECES-
SARY FOR SAFE AND EFFICIENT OPERATION. IN-
STALLING THIS PRODUCT IMPROPERLY MAY RESULT
IN A HOUSE FIRE AND PERSONAL INJURY.
ALL APPLICABLE BUILDING CODES FOR YOUR LOCA-
TION MUST BE FOLLOWED. IN AREAS WHERE BUILD-
ING CODES REQUIRE ADDITIONAL STEPS TO THE
INSTALLATION OF THIS PRODUCT NOT INCLUDED IN
THIS MANUAL, THE BUILDING CODES WILL TAKE
PRECEDENT AND MUST BE FOLLOWED. CONTACT
YOUR LOCAL BUILDING INSPECTOR TO OBTAIN ANY
NECESSARY PERMITS OR INSPECTION GUIDELINES
BEFORE INSTALLING THE PRODUCT.

Operator’s Manual
HP21 Pellet Stove
~ 5 ~
CAUTION
ALL APPLICABLE BUILDING CODES FOR YOUR
LOCATION MUST BE FOLLOWED. IN AREAS WHERE
BUILDING CODES REQUIRE ADDITIONAL STEPS TO THE
INSTALLATION OF THIS PRODUCT NOT INCLUDED IN THIS
MANUAL, THE BUILDING CODES WILL TAKE PRECEDENT
AND MUST BE FOLLOWED. CONTACT YOUR LOCAL
BUILDING INSPECTOR TO OBTAIN ANY NECESSARY
PERMITS OR INSPECTION GUIDELINES BEFORE
INSTALLING THE PRODUCT.
•Contact localbuilding or fire officials about
restrictions and installation inspection requirements in
your area.
•Contact your local authority (such as municipal building
department, fire department, fire prevention bureau, etc.) to
determine the need for a permit.
•This pellet stove is designed to burn pellet fuel
only.
•A working smoke detector is required and
must be installed in the same room as the stove.
•This stove is not intended for use in
commercial applications.
•Door andash pan must be closed and
latched during operation.
•Notify your insurance company of pellet stove
installation.
•This installation must conform with local
codes. In the absence of local codes you must comply
with EN 14785.
•The structural integrity of the
manufactured home floor, wall, and ceiling/roof
must be maintained.
•Keep combustible materials (such as
grass, leaves, etc.) at least three feet away from the
flue outlet on the outside of the building.
•This stove should not be used as the only
source of heat in the house. Power outages and
periodic maintenance will result in a total loss of
heat.
•Do not leave hopper door open while unattended.
CAUTION
INSTALLATION AND REPAIR OF THIS PELLET
STOVE SHOULD BE DONE BY A QUALIFIED SERVICE
PERSON. THE APPLIANCE SHOULD BE INSPECTED BEFORE
USE AND AT LEAST ONCE A YEAR BY A QUALIFIED
SERVICE PERSON. IT IS IMPERATIVE THAT THE CONTROL
COM- PARTMENTS, FIRE BOX, AND THE CIRCULATING AIR
PASSAGEWAYS OF THE STOVE BE KEPT CLEAN.
THE OPERATION OF EXHAUST FANS SUCH AS
BATH-ROOM FANS, ATTIC FANS, ETC. MIGHT STARVE THE
PELLET STOVE OF COMBUSTIBLE AIR CREATING A
NEGATIVE PRESSURE IN THE ROOM. PROVIDE ADE- QUATE
VENTILATION OF THE ROOM ACCOMPANYING
THE PELLET STOVE. IF NOT, THE PRESSURE
SWITCH
MAY SHUT OFF OPERATION OF THE PELLET
STOVE.
THE MOVING PARTS OF THIS STOVE ARE
PROPELLED BY HIGH TORQUE ELECTRIC MOTORS.
THESE PARTS CAN CAUSE SEVERE DAMAGE TO BODY
PARTS THAT GET NEAR THEM. KEEP ALL BODY PARTS
AWAY FROM AU- GER AND FANS WHILE THE STOVE IS
PLUGGED INTO AN
ELECTRICAL OUTLET. THESE MOVING PARTS
MAY BE-
GIN TO MOVE AT ANY TIME THE STOVE IS
PLUGGED IN.
THE VENT SURFACES CAN GET HOT ENOUGH
TO CAUSE BURNS IF TOUCHED. NONCOMBUSTIBLE
SHIELDING OR GUARDS MAY BE REQUIRED.
INSTALL VENT AT CLEARANCES SPECIFIED BY
THE VENT MANUFACTURER.
ALL VENTING JOINTS, WHETHER VERTICAL OR
HORI-ZONTAL, SHOULD BE MADE GAS-TIGHT WITH REC-
OMMENDED SEALANTS SPECIFIED BY VENT MANU-
FACTURER.
ACCORDING TO HUD (HOUSING & URBAN
DEVELOPMENT) REQUIREMENTS, WHEN INSTALLED IN A
MOBILE HOME, THIS STOVE MUST BE GROUNDED
DIRECTLY TO THE STEEL CHASSIS OF THE MOBILE
HOME AND BOLTED TO THE FLOOR. DIRECT
AIR ACCESS MUST BE PROVIDED, USE A
FRESH AIR KIT.
FOR USE IN THE UNITED STATES AND CANADA.
AP-
PROVED FOR INSTALLATION IN MOBILE
HOMES.
PRODUCER OF THIS APPLIANCE, RESERVES THE
RIGHT TO ALTER ITS PRODUCTS, SPECIFICATIONS AND/OR
PRICE WITHOUT NOTICE.

Operator’s Manual
HP21 Pellet Stove
~ 6 ~
TABLE OF CONTENTS
WARNINGS & SAFETY PRECAUTIONS ........................................................................................ 2-5
INTRODUCTION ................................................................................................................................. 7
Burning Pellet Fuel ...............................................................................................................................7
Automatic Safety Features .................................................................................................................. 7
SPECIFICATIONS ............................................................................................................................... 8
UNPACKING...........................................................................................................................................8
INSTALLATION ................................................................................................................................... 9
Stove Placement ................................................................................................................................... 9
Floor Protection Requirements ..............................................................................................................9
Clearance to Combustibles .................................................................................................................. 10
VENTING ..............................................................................................................................................11
Type of Vent.................................................................................................................................. 11
Pellet Vent Installation ................................................................................................................ 11
Vent Termination Clearances ............................................................................................................. 12-13
Outside Air Connection ............................................................................................................................14
Mobile Home ....................................................................................................................................... 14
Venting Installation Examples ........................................................................................................... 15-20
BECOMING FAMILIAR WITH YOU CONTROLLER ......................................................................... 21-22
Controller Buttons ..................... ............ ................... ................. ......... ................. ...... ...... ...... ....21
Screen Display ...................................................................................................................................... 22
PRE-OPERATION .................................................................................................................................23
OPERATION .................................................................................................................................24-28
Start-up ................................................................................................................................................ 24
Working in Different Operation Modes ................................................................................................... 24
Setting Other Data ............................................................................................................................ 25-27
Diagnostics ............................................................................................................................................ 28
Restoring Defaults ................................................................................................................................. 28
Shutdown .................................................................................................................................................28
MAINTENANCE ..................................................................................................................................29-31
Normal Care and Maintenance .......................................................................................................... 29-30
DailyMaintenance Tasks ...................................................................................................................31
Weekly, Monthly, and Bi-Monthly Tasks ..............................................................................................31
TROUBLESHOOTING & REPAIR ......................................................................................................32-34
Ordering Replacement Parts..............................................................................................................32
Troubleshooting Guide ......................................................................................................................33-34

Operator’s Manual
HP21 Pellet Stove
~ 7 ~
INTRODUCTION
Congratulations on your investment in quality. We have
worked to ensure that this pellet stove meets the highest standards
for usability and durability. With proper care, your stove will provide
many years of dependable service. Please read entire manual before
installation and use.
BURNING PELLET FUEL
Ashes need to be removed from the stove periodically.
See Normal Care &Maintenance section for cleaning procedure.
Due to the nature of pellet fuels, this stove will require attention
periodically. Regular cleaning is an important part of burning pellet
fuel.
PELLETS
•This pellet stove is designed and approved to burn
wood pellets, that comply with pellet fuels industry standards.
Minimum of 40 lbs. density per cubic feet, 1/4 to 5/16 in diameter,
with a maximum length of 1-1/2, and less than 1% ash.
•Theperformance of your pellet stove is greatly
affected by the type and quality of wood pellets. As the heat
output of various quality wood pellets differ, so will the performance
and heat output of the pellet stove.
•Wood pellets are generally produced out of wood
waste such as sawdust and shavings. The raw material is dried,
mechanically fractioned to size and extruded into pellets under high
pressure. Wood pellets need to be protected from direct exposure
to water. Water from sources such as condensation and
humidity causes pellets to expand and break down
into unusable fuel. Keep fuel dry.
•It is important to select and use only pellets that are
dry and free from dirt and debris. Dirty fuel will adversely affect the
operation and performance of the unit and will void the warranty. The
Pellet Fuel Institute (PFI) has established standards for wood pellet
manufacturers. Only use pellets that meet or exceed PFI standards
for premium fuels.
CLINKERS
•Impurities, such as silica (clinkers), will need to be
regularly cleaned and removed from the pellet stove. Clinkers
will form a hard mass and block airflow through the pot liner. High
quality fuels will result in fewer clinkers
WARNING
IF THE ELECTRICAL POWER FAILS ANY TIME
WHEN THE STOVE IS HOT, KEEP ALL STOVE
DOORS CLOSED. THE AUTOMATIC SAFETY
FEATURES MUST NOT BE BYPASSED.
CAUTION
BURNING WOOD PELLETS ACCORDING TO
RECOMMENDATIONS WILL ASSURE LONGER STOVE
LIFE AND LESS FUEL RELATED PROBLEMS.
THE USE OF GRATES OR OTHER METHODS
OF SUPPORTING THE FUEL IN THIS STOVE IS
PROHIBITED AND WILL VOID ALL WARRANTIES
AUTOMATIC SAFETY FEATURES
POWER OUTAGE
During a power outage, the stove will shut down
safely. Do not open the main door or ash door. During
a power failure the exhaust fan will not run. Keeping the doors
sealed will allow the exhaust vent to draft out naturally.
When the power is restored, the stove will not restart. If the
exhaust temperature is still 120 degrees Fahrenheit when power is
restored, the exhaust and convection fans will continue to run until
the stove cools. See lighting instructions to restart stove.
OVERHEATING
Over Fire Protection: If the stove is being
over fired or burning too hot, the high limit switches
will automatically shut down the stove to avoid damage
to components. If the temperature on the hopper
reaches 200 degree Fahrenheit, the auger will
automatically stop and the stove will shut down. The
exhaust fan will continue to run until the proof of fire
switch cools. Allow stove to cool before attempting
to re-ignite. See lighting instructions

Operator’s Manual
HP21 Pellet Stove
~ 8 ~
SPECIFICATIONS
Model Number HP21
BTU/hour input (1)
4.8bs/hr
Heating Capacity (2) 1,200 sq. ft.
Electrical Rating 115 Volts, 60Hz
Power Consumption 525 Watts ignition 75 Watts operating
Fuel Storage Capacity 40 lbs
Flue Size 75mm
Width 600mm
Height 905mm
Depth 715mm
Weight 110kg
(1) Heat output will vary, depending on the brand, type
and quality of fuel and the moisture content. Consult your dealer for
best results.
(2) Based on post 1982 home construction, requiring
35 BTU/ Hr. per Sq. Ft.
GLASS SPECIFICATIONS
This stove is equipped with ceramic glass. Replace
glass only with Qualified ceramic glass.
UNPACKING
Your stove will come fully assembled. Remove all
packing material and tape from the inside of the firebox.
Remove any tape on the outside of the glass. Open the
hopper, remove all packing material and power cord.
NOTE: MAKE SURE THE HOPPER IS FREE OF ALL FOREIGN
MATTER BEFORE FILLING WITH FUEL. FOREIGN MATERLAL WILL
CAUSE AUGER JAMS AND WILL VOID STOVE WARRANTY.

Operator’s Manual
HP21 Pellet Stove
~ 9 ~
INSTALLATION
It is recommended the stove be installed and serviced
by authorized professionals.
Proper installation of this stove is necessary for safe
and efficient operation. Installing this product improperly may
result in a house fire and personal injury. All applicable building codes
for your location must be followed. In areas where building codes
require additional steps to the installation of this product not included
in this manual, the building codes will take precedent and must be
followed. Contact your local building inspector to obtain any
necessary permits or inspection guidelines before installing the
product.
STOVE PLACEMENT
Sketch out a plan for installing the stove including
dimensions before permanent placement. When determining the
location for the stove, wall stud location is critical. You may need to
adjust the location of the stove to avoid trying to vent through a wall
stud. Before placing the pellet stove, connect the vent and allow for
minimum clearance to combustible walls.
FLOOR PROTECTION REQUIREMENTS
The stove must be installed on a noncombustible floor,
with proper floor protection, or on a masonry hearth.
When a clean out t-vent is installed in the inside of a
home, the floor protector
must extend 2 beyond rear of t-vent. SEE FIGURE 1 .
When stove
SEE FIGURE 1 When stove is vented straight through the
wall and the clean out t-vent is on the exterior of the
home, the minimum clearance is 2 from the back of the
stove to the wall. SEE FIGURE 2. The minimum floor
protector material is 24 GA sheet metal
Figures 1 Figures 2
Figures 1 and 2: Pellet stove floor pad clearances
WARNING
READ THIS ENTIRE MANUAL BEFORE YOU
INSTALL AND USE THIS STOVE. FAILURE TO FOLLOW THE
IN- STRUCTIONS MAY RESULT IN PROPERTY DAMAGE,
BODILY INJURY, OR EVEN DEATH.
DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE SERVING ANOTHER APPLIANCE.
CHILDREN AND ADULTS SHOULD BE ALERTED
TO THE HAZARDS OF HIGH SURFACE TEMPERATURES
AND SHOULD STAY AWAY TO AVOID BUMPS TO SKIN AND/
OR CLOTHING.
YOUNG CHILDREN SHOULD BE CAREFULLY
SUPER-VISED WHEN THEY ARE IN THE SAME ROOM AS
THE STOVE.
CLOTHING AND OTHER FLAMMABLE MATERIALS
SHOULD NOT BE PLACED ON OR NEAR THIS UNIT.
CAUTION
THIS STOVE SHOULD NOT BE USED AS THE
ONLY SOURCE OF HEAT IN THE HOUSE. POWER
OUTAGES AND PERIODIC MAINTENANCE WILL RESULT IN A
TOTAL LOSS OF HEAT.
CONTACT LOCAL BUILDING OR FIRE OFFICIALS
ABOUT RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCH AS
MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT,
FIRE PREVENTION BUREAU, ETC.) TO DETERMINE THE
NEED FOR A PERMIT.
KEEP COMBUSTIBLE MATERIALS (SUCH AS
GRASS, LEAVES, ETC.) AT LEAST 3 FEET AWAY
FROM THE FLUE OUTLET ON THE OUTSIDE OF
THE BUILDING.
INSTALLATION AND REPAIR OF THIS
PELLETSTOVE SHOULD BE DONE BY A QUALIFIED
SERVICE PERSON. THE APPLIANCE SHOULD BE INSPECTED
BEFORE USE AND AT LEAST ANNUALLY BY A QUALIFIED
SERVICE PERSON. IT IS IMPERATIVE THAT CONTROL
COMPARTMENTS, FIRE BOX, AND CIRCULATING AIR
PASSAGEWAYS OF THE STOVE BE KEPT
CLEAN.









Operator’s Manual
HP21 Pellet Stove
~ 10 ~
CLEARANCES TO COMBUSTIBLES
NOTE: These are minimum clearances to combustible walls .
NOTE: When interior vent is installed vertically, the clearance to the back wall is determined by the
vent size used. Install vent at clearance specified by the vent manufacturer. Take into consideration
any upward turning elbows or tees.

Operator’s Manual
HP21 Pellet Stove
~ 11 ~
VENTING
Before venting, consult vent manufacturer
’
s
specifications and recommendations for all venting
installations.
The following installation guidelines must be followed
to ensure conformity with both the safety listing of
this stove and to local building codes.
TYPE OF VENT
The pellet ventingpipe (also known as L vent) is
constructed of two layers with air space between
the layers. This air space acts as an insulator and
reduces outside surface temperature of pipe to allow
a clearance to combustibles. A cap must be used at
the termination of type L vent chimneys. For
elevations above 2,500 feet above sea level, a 4”L
is required.
PELLET VENT INSTALLATION
Vent termination
MUST
exhaust above air inlet
elevation. It is recommended to install at least three feet
(3’) of vertical pellet vent pipe. This vertical pipe will create some
natural draft to prevent the possibility of smoke or odor during
appliance shutdown and will keep exhaust from causing a nuisance or
hazard from exposure to high temperatures.
The installation must include a clean out tee to enable
collection of fly ash and to permit periodic cleaning of
the exhaust system. Total length of horizontal vent
must not exceed 10 feet. The maximum recommended vertical
venting height is 18 feet.
All joints for pellet vent are required to be
fastened with at least three screws and all
pellet vent connections (including adapters,
elbows, etc.) should be sealed airtight
by injecting 500 F. RTV silicone into the
gap between sections.
The area where the vent pipe goes
through to the exterior of the home must be
sealed with silicone or other means to maintain the
vapor barrier between the exterior and the interior of
the home.
WARNING
DO NOT CONNECT THIS UNIT TO A CHIMNEY
FLUE SERVING ANOTHER APPLIANCE.
DO NOT INSTALL A FLUE DAMPER IN THE
EXHAUST VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT DIRECTLY TO A MASONRY
CHIMNEY.
DO NOT TERMINATE VENT IN ANY ENCLOSED
OR SEMI-ENCLOSED AREA, SUCH AS; CARPORTS,
GARAGE, ATTIC, CRAWL SPACE, UNDER A SUN DECK OR
PORCH, NARROW WALKWAY OR CLOSED AREA, OR ANY
LOCATION THAT CAN BUILD UP A CONCENTRATION OF
FUMES SUCH AS A STAIRWELL, COVERED BREEZEWAY ETC
C A UTION
VENTSURFACESCAN GET HOT ENOUGHTO CAUSE
BURNS IF TOUCHED. NONCOMBUSTIBLE SHIELDING
OR GUARDS MAY BE REQUIRED.
PELLET VENT MUSTMAINTAINMINIMUMCLEARANCES
SPECIFIEDBY VENTMANUFACTURERFORCLEARANCE
TO ANY COMBUSTIBLES.
INSTALLVENT AT CLEARANCESSPECIFIEDBYTHEVENT
MANUFACTURER.
ALL VENTING, WHETHER VERTICAL OR HORIZONTAL,
JOINTS SHOULDB E MADEGAS-TIGHT
WITH RECOMMENDED SEALANTS.

Operator’s Manual
HP21 Pellet Stove
~ 12 ~
PREFERRED PELLET VENT TERMINATION CLEARANCE
●The stove vent must terminate on the outside of the building. Horizontal terminations must extend a minimum
of 12”from the wall. Vertical terminations must protrude a minimum 24”from the roof surface.
In addition, all
clearances listed below must be met. SEE FIGURE 7
●Must have an approved cap (to prevent water fromentering) or a 45° downturnwith rodent screen.
●If the termination is located on a windy side of thehouse, we suggest using an approved house shield to prevent soot from building up
on the side of the house.
●A vent must not be located where it will become plugged by snow or other material
Figure 7: Vent Termination
A:A Minimum 4’ clearance below or beside any door or window that opens. (This clearance may be reduced to
18”if using out-side air). We recommend the door or window be kept closed during operation. Minimum 1’
clearance below or beside any window that does not open.
B:Minimum 1’ clearance above any door or window that opens
C: Minimum 2’ clearance from any adjacent building
D:Minimum 7’ clearance above any grade when adjacent to public walkways
E:Minimum 2’ clearance above any grass, plants, orother combustible materials.
F:Minimum 3’ clearance from any forced air intake of anyother appliance
G:Minimum 2’ clearance below eaves or overhangs
H:Minimum1’ clearance horizontally from combustible wall
X:Must be a minimum of 2’ above theroof
NOTE: Vent may not terminate in covered walkway or breeze- way.

Operator’s Manual
HP21 Pellet Stove
~ 13 ~
Venting the Pellet Stove:
●
Do not install flue damper in the exhaust venting
system of this unit
●
Use an approved wall thimble when passing the vent
through walls. Use a ceiling support/fire stop spacer
when passing the vent through ceilings (make sure to maintain
clearance to any combustibles.)
●
if using more than one tee and 180° of elbows, you
must use 4“ venting pipes.
NOTE: In order to achieve optimum performance, it is
recommended that you keep the vent as short as
possible, especially in regards to the horizontal run.
The vent must have a support bracket every 5 ‘of pellet
vent when on the exterior of the structure.
The vent height and run must not exceed the distance
as illustrated in the diagram below.
Venting into this(the lighter)shaded area any require
combustion motor voltage adjustments and/or inlet air
adjustments(intake). SEE FIGURE 9.
INTAKE & EXHAUST POSITIONS
Figure 8: Intake and exhaust positions
Figure 9: Venting and combustion motor voltage
adjustment chart
5 Feet
10 Feet
15 Feet
20 Feet
25 Feet
30 Feet
33 Feet
（
max
）

Operator’s Manual
HP21 Pellet Stove
~ 14 ~
OUTSIDE AIR CONNECTION
Connection from the intake pipe (2
”
diameter pipe in
rear of stove) to the outside of the house is REQUIRED for
mobile home installation. It is recommended in tightly
sealed homes with exhaust fans such as kitchen or bathroom
fans. This will eliminate poor performance due to negative
pressure.
Only noncombustible pipe 2
”
(or greater) in diameter is
approved to use for outside air connections (straight or
flexible). PVC pipe is NOT approved and should
NEVER be connected to the stove.
If the air inlet is connectedto the outside, it MUST be
terminated with a vertical 90
°
bend (down) or with a wind
hood. Failure to do so could result in a burn back during
high winds blowing directly up the air inlet during a
simultaneous power failure.
Blockage, excessive length, or extra bends in the air intake
pipe will starve the stove of
MOBILE HOME
Installation in a mobile home should be in accordance with
the manufactured home and safety standard (HUD), CFR
3280, Part 24. This stove must be vented to the outside. In
addition to the standard installation instructions, the following
requirements are mandatory for installation in a mobile home:
1.The stove must be permanently attached to the floor.
2. Stove must have an outside air source.
3. Stove must be electrically grounded to the steel chassis of
the mobile home.
4. All vertical chimney vents must have wall supports.
5. All exhaust systems must have a spark arrestor.
6. Check with local building officials to see if other codes may
apply.
WARNING
DO NOT CONNECT TO ANY AIR
DISTRIBUTION DUCT OR SYSTEM.
DO NOT INSTALL IN A SLEEPING ROOM.
CAUTION
THE OPERATION OF EXHAUST FANS SUCH
AS BATHROOM FANS, ATTIC FANS, ETC. MIGHT STARVE
THE PELLET STOVE OF COMBUSTIBLE AIR CREATING A
NEGATIVE PRESSURE IN THE ROOM. PROVIDE
ADEQUATE VENTILATION IN THE ROOM ACCOMPANYING
THE PELLET STOVE. IF NOT, THE PRESSURE SWITCH
MAY SHUT OFF OPERATION OF THE PELLET STOVE.
THE STRUCTURAL INTEGRITY OF THE
MANUFACTURED HOME FLOOR, WALL, AND
CEILING/ROOF MUST BE MAINTAINED
UNDERSTANDING YOUR STOVE
Your Stove utilizes a vertical auger fuel feed system
that is operated by a microprocessor controlled digital circuit
board. The digital circuit board allows the vertical auger fuel
system to run in a timer based, non-continuous cycle; this cycling
allows the auger to run for a predetermined amount of time. The
auger pushes pellets up a chute located in the hopper. The
pellets will then turn and fall through another chute into the burn
pot. Your stove is equipped with an automatic ignition system
that should ignite the fuel within 3-5 minutes of pressing the On/O
button. As pellets fill the burnpot and ignite, outside air is drawn
across the fuel and heated during the combustion process which is
then pulled across the heat exchanger by the exhaust motor or the
draft fan. As the stove reaches operating temperature, room air
is then circulated around the heat exchanger by a room air blower,
distributing warm air into the room.
The amount of heat that is produced by the stove is
proportional to the rate of fuel that is burned. Because a
forced draft pressure is required for the combustion
process inside your stove, it is extremely important that the
exhaust system be properly installed and maintained. Also, the
doors must remain closed while in operations and the seals on the
doors must be properly maintained

Operator’s Manual
HP21 Pellet Stove
~ 15 ~
SIMPLE
STOVE
VENTILATION
EXAMPLES
Figure 10: Straight Installation--outside, through wall installation
Figure 11: Straight Installation—inside vertical rise, horizontal termination
heat-resistant
termination
wall
floor
Fresh air inlet
Venting
wall
termination
heat-resistant
Fresh air inlet
floor

Operator’s Manual
HP21 Pellet Stove
~ 16 ~
COMPLEX
STOVE
VENTILATION
EXAMPLES
INTERIOR
VERTICAL
INSTALLATION
Figure 12: Interior Vertical Installation

Operator’s Manual
HP21 Pellet Stove
~ 17 ~
CLASS
A
CHIMNEY
RETROFIT
Figure 13: Class A Chimney Retr ofit

Operator’s Manual
HP21 Pellet Stove
~ 18 ~
MASONRY
FIREPLACE
HEARTH
STOVE
Figure 14: Masonry Fireplace Hearth Stove

Operator’s Manual
HP21 Pellet Stove
~ 19 ~
ZERO-CLEARANCE
(METAL)
FIREPLACE
HEARTH
STOVE
Figure 15: Zero-Clearance (Metal) Fireplace Hearth Stove

Operator’s Manual
HP21 Pellet Stove
~ 20 ~
FREESTANDING
MASONRY
CHIMNEY
Figure 16: Freestanding Masonry Chimney