Harman Stove Company Accentra 2 User manual

SAFETY NOTICE
PLEASE READ THIS ENTIRE MANUALBEFORE YOUINSTALLAND USE YOURNEW ROOMHEATER. FAILURE TO
FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTYDAMAGE, BODILYINJURY, OR EVEN DEATH.
FOR USE INTHE U.S.AND CANADA. SUITABLE FOR INSTALLATIONINMOBILE HOMES
IF THIS HARMANACCENTRA PELLET STOVE IS NOT PROPERLY INSTALLED,AHOUSEFIRE MAYRESULT. FOR
YOURSAFETY, FOLLOWINSTALLATIONDIRECTIONS.
CONTACT LOCALBUILDING ORFIRE OFFICIALSABOUT RESTRICTIONSANDINSTALLATIONINSPECTION
REQUIREMENTSINYOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCHAS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTIONBUREAU,ETC.) TODETERMINE THENEED FORAPERMIT.
CETTEGUIDE D'UTILISATIONEST DISPONIBLEENFRANCAIS.CHEZVOTRECONCESSIONNAIRE DEHARMANSTOVE
COMPANY.
SAVETHESEINSTRUCTIONS.
The Harman Accentra-2 Pellet Stove
Installation & Operating Manual
R4
“Ce manuel est disponible en Français sur demande”
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2
Introduction
Harman Stove Company
352MountainHouseRoad
Halifax,PA 17032
[e-mail]@harmanstoves.com
Table of Contents
Automatic Operation 4
Manual Operation 6
ESP Control 8
Assembly & Installation 9
Venting 14
Maintenance 20
Trouble-Shooting 25
Specifications 26
Wiring Diagram 27
Feeder Parts 28
Parts List 29
Warranty 30
This heatingappliance does not just have automatic ignition, it has total automatic temperature control. The
Accentra has an input heat rangefrom0 to 40,000BTU's. This patentedfeedsystemhas a maximumfeedrate of 5 lbs.
per hour and a minumum(maintenance) feed rate of .75 lbs. per hour and then "off" if necessary. The hopper holds
approximately 50 pounds of fuel. Theunit hasan easy to cleancombustion systemwithanash panthat holds ash from
1 tonof burned premiumpellets.
The control is designed for easy andefficient operation.It has 2 automatic modes of operationand2 manualmodes of
operation.
TheAccentrausesa smallroomsensorratherthena wallthermostatfor amore accurate temperature control.
This unit is equipped withseveral differentsafety devices which willbe explainedlater inthis manual.Withits specially
designedburnpot andthe "Advance Ignitor"Automatic Ignition System,theunitcanburna largevariety ofbiomass fuels
with varyingash content. The accordianstyle cast iron heat exchanger systemallows maximumsurface area for the
mostefficientheat transferina smaller firebox.
SAFETYNOTICE: IF THISHARMAN ACCENTRAPELLET
STOVE ISNOTPROPERLYINSTALLED. AHOUSE FIRE
MAYRESULT.FORYOURSAFETY,FOLLOWTHEINSTAL-
LATIONDIRECTIONSCONTACTLOCALBUILDINGORFIRE
OFFICIALSABOUT RESTRICTIONSAND INSTALLATION
INSPECTIONREQUIREMENTS INYOURAREA.
Please copy your
serial number fromthe
label on your stove to
thebox below.
SERIAL NUMBER
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3
TheAccentra pelletstove ismore thanjustautomaticignition, itis alsoautomatictemperature
control. Theautomatic systemwillallowthefiresize tobe adjustedto matchthe heating
needs and even put the fire out if necessary. If heat is needed after the fire is out, the
Accentra will automatically re-ignite andadjust the fire size to match the heatingneed.
The totally automatic roomsensormodeis recommendedbecause of its efficiency.
The unitcanbe switchedbetween "AUTO" and"MANUAL"at any timeduringoperation.
Igniter switch to "AUTO"
Room Temperature Mode
In "Room Temp Mode" heat output is controlled au-
tomatically by the RoomSensing Probe. Whenthe Room
Sensing Probe calls for heat, the stove will increase out-
put. When the Room Sensing Probe is getting close to
the set temperature, the stove will begin to level off out-
put and keep the fire burning at just the right temperature
to maintain that setting.
High output is determined by the feed rate set-
ting. This setting, generally on #4, can be increased if
higher burnrates are necessary (Fig.1). The unit's maxi-
mum burn rate should not create less then 1" of ash on
the burn pot front edge(See Fig.4). Overfeedingis not a
safety concern, but fuel may be wasted if unburned pel-
lets fall into the ash pan.
In "Room Temp Mode" a constant fuel consumption
rate is sacrificedfor exactroomtemperature. Therefore,
as it gets colder more pellets will be burned automati-
cally.The distribution blower speed will vary according to
the position of the mode selector pointer, and fire size.
Ignitor switch to"AUTO"
Stove Temperature Mode
This allows for automatic ignition upon start-up only.
The unit can then be set at any desired setting. The heat
output and fuel consumption will remain constant regard-
less of room temperature (See Fig 2). The unit's maxi-
mum feed rate should not create less than 1" of ash on
the burn pot front edge. See Fig 4.
The unit's low burn or maintenance setting is as low
as it will go.It willnot go out unless it runs out of fuel or is
turned off.
Shut-Down Procedure
To killthe fireor stopburningthestove, turntheMode
Selector to "OFF". This will cause the fire to diminish and
burn out. When the fire burns out and the stove cools
down everything will stop.
If youpull the plug to shut down the stove,all motors
will stop. This may cause incomplete combustion and
smoke inthe firebox.If theloaddooris openedthe smoke
may escape.
The best way to shut down the stove is simply let it
run out of pellets, then the stove will shut down automati-
cally.
Automatic Ignition/Operation
Fig. 2
Room Temperature Mode: This setting will produce a room
temperature of 70 degrees with the distribution blower at medium
speed.
This setting will produce medium heatwith the
distribution bloweron "low".
This setting willproduce continuous maximum heat
outputwiththedistributionbloweratfull speed.
Stove Temperature Mode
Fig. 1
...
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4
Starting First Fire
Ignitor Switch to"AUTO" (down position)
Make sure the unit is plugged into a 120 VAC,
60 HZ electrical source. The powerlight should
betheonlylightlit.
1. Turn Mode Selector to "OFF".
2.Fillhopperwithpellets.1
3.Cleanburn potwithscraper,ifnecessary.5
4. If starting after an emptyhopper, turn Feed
Adjuster to "TEST" (for one 60 second cycle).2
Thiswillpurgepelletsintotheaugertubeandalso
allowyoutocheckthemotorsforoperation.NOTE:
Theaugermotor willnotoperatewiththeview
door or ash pan door open.3
5. Turn FeedAdjuster to #4.4
6.Flipthe Ignitor Switchdowninto the"AUTO"
position.
7. Turn the Temperature Dial to desired room
temperature.
8.Turn Mode Selectorto Room Temperature or
StoveTemperature.
9.Fillhopperwithpellets andremove ashesas
required.6
Automatic Start Up
1.Fines aresmall pieces ofbrokenpellets(sawdust).Finesdo
notfloweasily and often buildup on the hopperfunnel bottom
angles. These fines can be pushed into the feeder opening
andthenfill the hopperwith pellets.As the systemworks,they
will be burned.
2. The "TEST" cycle will operate the feeder motor for exactly
oneminute.Turningto"TEST" again and againmay purge too
muchfuel intothe burnpot causing excessivesmoke on start-
up.
3.Thefireboxlowpressureswitchwill notallowtheaugermotor
or the igniterelement to operate if the view dooris open.
4. Adjust Feed Rate. If this is your first fire or you are trying
different pellets, set the feed adjuster to #4, Fig. 3. This is a
conservative numberand willprobably needto beincreased.
After you know a feed rate setting that works well, use that
setting.Remember,ifyourfeed rateistoo high youmay waste
fuel.
5.Thisisusually aweekly maintenceprocedure.Cleaningthe
burn potwiththescraperwith asmall amountofnewfuel inthe
bottom isnota problem.First,scrape the ashes onthefront of
the burn pot into the ash pan. Then scrape the holed surface
downward into the burn pot. When the stove is ignited these
scrapings will be pushed out by the feeder.
6.Theash pancan holdthe ashes from approximately1 tonof
premium fuel. This means the ashes will only need to be
emptied a fewtimes a year.
7. Setting the feed adjuster# for maximum burn:With the unit
burningin"AUTO",turnto"StoveMode"andputthefanon "H".
SettheTemperatureDial to #7.Allow the unit toburn for about
30minutes andcheckash onfrontofburn pot.Fig.4.If theash
lineis largerthan 1",turn thefeedadjusterfrom #4to#5.Allow
another 30 minutes of burn time and check again. If , at #6
setting,a1"orless ashbedisnotobtainable,itisnota problem.
The 1" ash bed is only a maximum burn rate and at most
normal settings the ash bed will be larger.
See Note 7.
Fig. 3
Fig. 4
1"
Notice when using Optional Battery Back-Up:
If a power outage is expected, change the toggle
switch to Manual Mode. The Harman 502H Battery
Backup is incapable of powering the igniter. If an
automatic ignition is attempted while the stoves is
being powered by the battery back up, it may cause
damage to both the stove and the battery backup
unit.
NEVERUSEGASOLINE,GASOLINE-TYPELANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID,
ORSIMILAR LIQUIDS TO START OR'FRESHEN UP'
AFIRE INTHIS HEATER. KEEP ALL SUCHLIQUIDS
WELLAWAYFROMTHEHEATER WHILE INUSE.
Warning
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5
The Accentra Pellet Stove is capable of manualoperation. This also allows the opera-
tor to manually control operation during an emergency (i.e. igniter failure, when using a
502H battery backup, or when using certain generators.)
The unit can be switched between"AUTO" and "MANUAL" at any time duringoperation.
Ignitor Switch to "MANUAL"
Room Temperature Mode
The fire will have to be lit with starting gel and a
match, or started automatically, see "Automatic Opera-
tion". Turn to "Manual" position when the fire is estab-
lished.
The difference between "AUTO" Room Tempera-
ture Mode and "Manual" Room Temperature Mode is
that thefire willnotgoout asthe roomtemperature goes
above the controlboard setting. The unit can only go to
low burn and will remain there until it runs out of fuel or
until more heat is needed and the feed rate increases.
Feed rate adjustments and dial settings are the same
as "AUTO" settings.
Ignitor Switch to "MANUAL"
Stove Temperature Mode
The advantage of this mode is to allow the opera-
torto havea largeviewingfirewithoutblowingextra heat
into the room.
During operation, with the temperature dial set at
#5 or less, the distribution fan will not operate. A#5 on
the temperature dial and a #5 on the feed adjuster is
approximately 80% output. It is not necessary to oper-
ate the distribution blower below this point. Therefore,
there can be a higher feed rate ( a larger viewing fire)
without an excess of hot air blowing into the room.
Anexample of whento use the ManualStove Tem-
perature Mode is if you want to watch a large fire and
the room is aleady up to temperature. The Stove Tem-
perature Mode allows you to have a larger fire and a
lower sound level, without the distribution blower.
NOTE:Duringtheuseof thismode,ifyou keep
increasingthe temperature dial settingto increase
the fire size, the distribution blower will automati-
callycome on when the ESPTemperature reaches
350oF, or 81%output.
NOTE: When starting the unit in the "AUTO"
mode and switchingto "MANUAL",thefiremust be
large enough to start the distribution blower. The
startingof theblower isasignalthat the start cycle
is completed and the fire will not go out.
Manual Ignition/Operation
Room Temperature Mode: This setting will produce a room
temperature of 70 degrees with the distribution blower at medium
speed.
Fig. 5
This setting willproduce alarge viewingfire without a
distribution blower operating.
Manual Stove Temperature Mode
WARNING: HIGH VOLTAGE
Disconnect power before opening cover.
Fig. 6
...
...
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6
Manual Start Up
Starting First Fire
Ignitor Switch to"MANUAL" (up position)
Makesurethe unitis plugged into a120
VAC, 60 HZ electrical source. The power light
shouldbethe onlylightlit.
1. Turn FEED ADJUSTER to desired feed
rate.No. 4 is good for most pellets.4
2. Turn the MODE SELECTOR to “OFF” and
then to the desired mode. This will reset
controland startthecombustionmotor.
3. Turn the TEMPERATURE DIAL to the de-
siredsetting.
4. Clean burn potwithscraper if necessary.5
5. Fill burn pot with pellets, only level with
front edge.(Do Not Over Fill).
6. Add starting gel on top of the pellets. Stir
gel intopellets forfastlighting.
7. Light starting gel with a match, and close
the door. Operation willbegin when the fire
reaches the propertemperature.3
8. Fill hopper withpellets and remove ashes
as required.1, 6
1. Fines are small pieces of broken pellets (sawdust). Fines
do not flow easily and often build up on the hopper funnel
bottom angles. These fines can be pushed into the feeder
opening and then fill the hopper with pellets. As the system
works,they will be burned.
2. The "TEST" cycle will operate the feeder motorfor exactly
one minute.Turningto"TEST"again and againmaypurge too
much fuel intotheburnpotcausing excessivesmoke on start-
up.
3. The firebox low pressure switch will not allow the auger
motoror the igniter element to operate if the view door orthe
ash pan door are open.
4. Adjust Feed Rate. If this is your first fire or you are trying
different pellets, set the feed adjuster to #4, Fig. 7. This is a
conservative numberand will probably needto be increased.
After you know a feed rate setting that works well, use that
setting.Remember,ifyourfeedrateistoo high youmay waste
fuel.
5.This isusually aweekly maintenceprocedure.Cleaning the
burn potwiththescraperwithasmallamountofnewfuelin the
bottom is nota problem. First,scrape the ashes onthe front of
the burn pot into the ash pan.Then scrape the holed surface
downward into the burn pot.When the stove is ignited these
scrapings will be pushed out by the feeder.
6.Theashpancan holdtheashesfrom approximately1tonof
premium fuel. This means the ashes will only need to be
emptied a fewtimes a year.
7. Settingthe feed adjuster#formaximum burn:Withthe unit
burning in"AUTO",turnto"StoveMode"andputthefan on "H".
SettheTemperatureDial to#7.Allow the unit toburn forabout
30minutes andcheckash on frontofburn pot.Fig. 9.Iftheash
line islargerthan 1",turnthefeed adjuster from #4to #5.Allow
another 30 minutes of burn time and check again. If , at #6
setting, a 1" or less ash bed is not obtainable, it is not a
problem. The 1" ash bed isonly a maximum burn rate and at
mostnormal settings the ash bed will be larger.
Fig. 8
Fig. 7
Fig. 9
1"
See Note 7.
NEVERUSEGASOLINE,GASOLINE-TYPELANTERN
FUEL,KEROSENE,CHARCOALLIGHTERFLUID, OR
SIMILAR LIQUIDS TO START OR 'FRESHEN UP'A
FIRE IN THIS HEATER. KEEP ALL SUCH LIQUIDS
WELLAWAYFROMTHEHEATER WHILE INUSE.
Warning
Notice when using Optional Battery Back-Up:
If a power outage is expected, change the toggle
switch to Manual Mode. The Harman 502H Battery
Backup is incapable of powering the igniter. If an
automatic ignition is attempted while the stoves is
being powered by the battery back up, it may cause
damage to both the stove and the battery backup
unit.
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7
ESP Control
Status light error messages:
1 Blink:Indicates controlboardselfdiagnostic fail-
ure. This requires a manual reset*.
3 Blinks: Indicates ESP (Exhaust Sensing Probe)
failure. This requires a manual reset*.
4 Blinks:Canoccur onlyinRoomTempMode and
indicates Room Sensing Probe failed or not in-
stalled. If a Room Sensing Probe is then installed,
the status light will automatically reset.
NOTE: Unit willnot start in "AUTO" with this status
error.
5 Blinks (In Igniter Auto. Mode Only): Indicates
that the unit has failed to light within the 36 minute
startcycle. Toreset - TurnModeSelector to "OFF",
then turn to either mode again.)
6 Blinks : Indicates that the control has calculated
poor or incomplete combustion occurring for more
than 50 minutes.
A six blink status may be set if the stove is allowed
to run out of pellets. To reset, turn mode selector to
"OFF" then back on to the desired mode. If the unit
was not out of pellets, see Troubleshooting section,
Page 24, for more details.
* Manual reset- disconnect power cord for a few
seconds andreconnect. If error stilloccurs callyour
Dealer.
Mode Selector
Allows you to choosebetween RoomTempMode,
Stove TempMode, orOFF.Alsoallows youto vary
the distributionblowerspeed by turning the knob
tothe high orlowside ofeach mode.
Feed adjuster
Sets the maximum
feedrate
Test
Runs all motors at full
speedfor one minuteto
check operation. After
two minutes the stove
will go tominimum burn
and the blowers will
alternate from high to
low every minute to
remindyou thatyou are
still in "TestMode".
Distribution Blower
speed adjustment
range.
L = low
H= high
Variablespeedanywhere
between L and H;
although as the stove
temp.goesup,sodoes
the L andH scale.
Power Light
Indicates powertothe
control.
Indicates powertothe
feedmotor.
Indicates power to
combustionblower
Status Light
Will be lit in either stove
or room temp mode when
pointer is not within off
positionbandexceptafter
normal shutdown.Blinks
to indicate errors listed
below.
Indicates powerto
distribution blower.
Indicates igniter is on.
Igniterswitch
Settoappropriate
Start-Up mode.
Temp dial
Allows you to adjust the
roomtemperature inRoom
TempModeusingtheouter
scale marked in degrees
Fahrenheit. It also allows
you to adjust the stove
temperature whileinStove
TempModeusingtheinner
scale markedfrom 1 to 7.
DealerDiagnostic Port
For dealer maintenance
only. RequiresspecialDDM
monitorsuppliedtoHarman
Dealers exclusively.
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8
When installing and operating your Harman
Accentra Pellet Stove, respect basic safety standards.
Read these instructions carefully before you attempt to
install or operate the Accentra.Failure to do so may re-
sult in damage to property or personal injury and may
void the product warranty.
Consult with your local building code agency and
insurance representative before you begin your instal-
lation to ensure compliance with local codes, including
the need for permits and follow-up inspections.
Several issues must be addressed when select-
ing a suitable location for your Accentra Pellet Stove.
Observing required clearances to combustible materi-
als, the proximity to a safe chimney or venting system,
andthe accessibility of electrical supply must allbe con-
sidered. In addition, selecting a location that takes ad-
vantage of the building's natural air flow is also desir-
abletomaximizetheheatingeffectiveness oftheheater.
In many cases, this is a central locationwithin the build-
ing. Adequate combustion and ventilation air must be
provided. The Accentra pellet stove is capable of being
installed with a 100% outside air combustion system.
See Page 14 about venting.
Place thestove ona noncombustiblefloor surface.
If the floor surface is made of a combustible material,
(such as carpet, vinyl or wood), a noncombustible ma-
terial must be installed between the bottom of the unit
and the floor. This can be a minimum of a 20 gauge
sheetmetal plate, ceramic tile with grouted joints, a UL
listed stove board, or a Harman Cast Iron floor protec-
tor1. The Harman Cast Iron Floor Protector is equal to
the minimum dimensions, which are 241/16 x 285/81. This
allows for a 2" extension on each side of the unit and a
6" extensionto thefrontofthe ashopening(33/8"2ifmea-
suredfrom the base plate front edge.) The rear edge of
the floor protectioncanbe flush withthe cast base plate
rear edge.
Place the stove away from combustible walls at
least as far as shown in figures 10, 11, 12, & 13
Note that the clearances shown are minimum for
safety but do not leave much room for access when
cleaning or service is needed.
CAUTION
The stove is hot while in operation.
Keep children, clothing and furniture away.
Contact may cause skin burns.
Installation
2"
Fig.12
0"
FLOOR
PROTECTOR16"2
2"
24 1/16"*
285/8"*
Fig.11
2.25"
12"
Fig.10
6.25"
6.25"
5"min3
5"min.3
This isthe minimumsize Harman
recommends forthe alcovewith a60" ceiling.
54"
2.25"
14.75" 14.75"
24"
Fig. 13
1. Check yourlocal codes to see if protection is required
under the flue pipe.
2. This measurementequals 6" from insideedge of ash
door opening.
3. 5" pipe clearance to wall in a corner installation.
(*Harman Cast Iron Floor Protector size)
AFTER THE INSTALLATION IS COMPLETED
Before the first fire is lit, check and record the
high and low draft reading numbers on page 12. Make
adjustments to the low draft at this time, if necessary.
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9
Installation
IMPORTANT NOTE: The Accentra unit is shipped
bolted to the skid throughtwo holes in the cast base
plate. If these holes are not used to lag the unit to
the floor these holes must be filled with the 3/8" x 1/
2" hex head bolts provided. (See tag on bolt bag
provided.)
Leveling/vibration-dampening feet
Skidboltdownholes/floor lagdown holes
Fig. 14
Fig. 15
Adjustment of the rubber pad leveling feet
The Accentra is provided with 4 rubber pad feet.
These feet will raise the bottom edge of the cast
base plate off the floor surface. This will insure that
any vibrations caused by motors and other moving
parts willnotbe transferredbydirect contact. These
rubber pads have a threaded stud that extends
throughthe base plate.The topof the threadedstud
has a screwdriver slot. Therefore, the unit can be
leveledfrom above inside the unit.The front two are
in the right and left front corners of the firebox.
NOTE: The door will need to be partially closed to
access the right leveling pad stud due to the door
hinge. The rear two studs are to the right and left of
the distribution blower. They are somewhat difficult
to reach, therefore,it is suggested that the rear two
pads be adjusted by tilting the unit slightly forward.
Adjust the pads with your fingers and tilt unit back
for fit. Then adjust the front pads for the final
clearance. (The use of the rubber pads is not
necessary if not desired.)
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10
When installing the Accentra in a mobile home
several requirements must be followed:
1. The unit must be bolted to the floor. This can
be done with 1/4" lag screws throught the 2 holes in
the base plate shown in Fig. 16
2. The unit must also be connected for the out-
side air. See page 14.
3. Floor protection and clearances must be fol-
lowed as shown on page 9.
4. Unit must be grounded to the metal frame of
the mobile home.
CAUTION: This appliance must be vented
to the outside.
Due to high temperatures, the Accentra should
be placed out of traffic and away from furniture and
draperies.
Childrenandadultsshouldbealertedtothe haz-
ards of high surface temperatures and should stay
away to avoid burn 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 the Accentra Pellet Stove.
Installation and repair of the Accentra Pellet
Stove should be done by a qualified service person.
The appliance should be inspected before use and
at least annually by a qualified service person. More
frequentcleaningwillbe required.Itis imperative that
control compartments, burners, and circulating air
passageways of the Accentra be kept clean.
AFTER THE INSTALLATION IS COMPLETED
Beforethe first fire islit, checkandrecordthe high
and low draft reading numbers on page 12. Make
adjustments to the low draftat this time, if necessary.
Mobile home installation should be done
inaccordance withthe ManufacturedHome and
SafetyStandard (HUD), CFR 3280, Part 24. CAUTION
THE STRUCTURAL INTEGRITY OF THE
MOBILE HOME FLOOR, WALL, AND
CEILING/ROOF MUST BE MAINTAINED.
Unit bolt down holes for mobile home installation
lag tofloor with1/4" lagbolts withwasher (supplied
by installer.)
Mobile Home Installation
Fig. 16
CAUTION
THE STOVE IS HOT WHILE IN OPERATION.
KEEP CHILDREN, CLOTHING AND
FURNITUREAWAY. CONTACT MAY CAUSE
SKIN BURNS.
KEEP COMBUSTIBLE MATERIALS SUCH
AS GRASS, LEAVES, ETC.AT LEAST 3 FEET
AWAY FROM THE POINT DIRECTLY UNDER
THE VENT TERMINATION.
WARNING
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11
These units are pre-tested at the factory with
exactly 120 VoltsA.C., 60 Hz. Theyare checked and
adjusted for firebox tightness,gasket leakage,motor
operationandignitor operation. TheAccentra is then
factory set at a high adjustment. NOTE: Low draft
adjustment mayberequired.Thefactorylow draft
settingmaynotbe correct fortheunitspermanent
installation conditions.
The controlboardontheAccentrais equipped
with a low draft adjustment port. Located on the
control face just to the left of the ignitor light. See
Figure17. Thisvoltage adjustmentis providedto allow
the unitto beadjustedforthe householdvoltagewhere
the unitis goingto beinpermaneantoperation.NOTE:
The line voltage varies from area to area and often
home to home.
The low draft voltage should be adjusted to
achieve the most efficient burn on low burn or
"maintenance". This voltage adjustment allows the
installer to change the low voltage set point
approximately 15 volts. This adjustment should be
done by the installer during set up because a draft
meter reading is required to insure proper set up.
If the unit is not adjusted properly, it does not
causeasafetyconcern.Ifthe unitis adjustedtoo high,
only effiency is lost. If the unit is adjusted too low, the
low draft pressure switch will not allow the feeder
motor or the ignitor to operate.
A simple draft test should be performed after
completing the flue pipe installation. To record the
results for future reference:
1. Plug unit into a 120VAC, 60 HZ outlet.
2. Close the hopper lid and front view door. Neither
pellets or a fire are required for this test.
3. Withthe mode selector in the "OFF" position, turn
the feed adjuster to "TEST".
4. Record the high draft_____in. W.C. (Normal is -
.45 to -.55) The control will be on the High Draft for a
total of 2 minutes.
5. After 2 minutes is up, the combustion motor will
go down to low draft and the distribution blower will
go on high. Allow approximately 15 seconds to pass
for the combustion motor to slowbefore checkingthe
low draft.
6. If the lowdraft is between .30 and .35, record the
reading_____in. W.C. If the readingishigher,slowly
turn the set screw counter-clockwise until the draft
lowers. If the reading is lower,very slowlyturn the set
screw clockwise until the draft increases.
NOTE:The testmode alternatesfromhigh to low
draft every 60 seconds. If more time is needed
for draft adjustment,wait until the next low draft
cycle.
NOTE: In some cases, the draft may not go as
low as .30 even with the set screw completely
counter-clockwise.
Combustion
Motor Speed
Control
Low draft only
set point.
The small
straight
screwdriverslot
is plastic;
therefore, the
unit can be
adjustedwhile
in operation.
Fig.17 DraftMeterbolt hole location
Fig. 18
Low Draft Voltage Adjustment
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12
The room sensor is a small temperature sen-
sor on the end of a 60" gray wire. This sensor is
installed much like a standard wall thermostat. Be-
cause it is so small, it can be hidden along the trim
of a doorway or even up the leg of a coffee table.
There is a remote room sensor port on the rear of
the unit for easy external connection. Use standard
18-2 thermostat wire to extend the distance to the
desired location (100' maximum). The room sen-
sor shouldbe installedinthelocationwhereyouwant
to control the temperature.
NOTE: Distances of more than 25 feet from
the unit or in another room are not recommended.
The roomsensor is essential for the Accentra's ex-
cellent efficiency.
It is recommended that the roomsensor be
installed, even if only installed on the rear of the
unitasa returnair sensor.Thereis anintake screen
onthe bottomof therear sheetmetalenclosure. This
is an ideal place to tyrap the sensor head to sense
return air temperature.
Fig. 19
Room Sensor Installation
Fig. 20
Room Sensor and Rear Shield Installation
Rear Shields
5/16" Hex Head
Screws (2on
eachside)
5/16" Hex Head
Screws (2on
eachside)
The rear isolated shields are split in the middle for
easy removal. Each shield has two 5/16" hex head
screws that only need to be loosened (NOT
REMOVED) to allow the shield to slide away from
the unit. NOTE: It is not recommended that the
unit be operated with the shields removed, due
tothe hot and movingparts which theyprotect.
Do not allow pellets or sawdust to build up on
the hopper lip.
Inspectthehopper lidgasketfor damage.Agood
hopper lid seal is very important for proper
operation.
Fig. 21
Hopper Lid Foam
Gaskets
Hopper lip
REMINDERS
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13
Venting
Acombustionbloweris usedto extractthe com-
bustiongases fromthefirebox.This causes a nega-
tive pressure in the firebox and a positive pressure
inthe ventingsystemas shown infig.22. The longer
the vent pipe and more elbows used in the system,
the greater the flow resistance. Because of these
facts we recommend using as few elbows as pos-
sible and 15 feet or less of vent pipe. The maximum
horizontal run should not exceed 48". If more than
15 feet of pipe is needed, the diameter should be
increasedfrom3" to4" becausea largerpipe causes
less flow resistance. Be sure to use approved
pellet vent pipe wall and ceiling pass- through
fittings to go through combustible walls and
ceilings. Be sure to use a starting collar to attach
the ventingsystento the stove.The starting collar
must be sealedto the stove with high temp sili-
conecaulking.
+ =Positive static pressure
= Negative static pressure
Venting
Fig.22
InletCoverpart#
1-10-08542
Flexpipepart#
2-00-08543
Outside airflex pipe
goeshere
RoomSensor
Connection Ports
3" PL ventpipe
fluecollar
Fig. 23
Fig. 24
Vent Pipe
Pellet venting pipe (also known as PL vent is
constructed of two layers with air space between
the layers. This air space acts as an insulator and
reduces the outside surface temperature to allow a
clearance to combustibles of only 3 inches. The
sections of pipe lock together to form an air tight
seal in most cases; however, in some cases a per-
fect seal is not achieved. For this reason and the
fact that the Accentra operates with a positive vent
pressure, we specify that the joints also be
sealed with clear silicone.
Outside Air
Outside air is optional except in mobile homes
and where building codes require. The benefit of
outside air is mainly noticed in small, very tight
houses.
To install outside air use 2 3/8" I.D. flex pipe
partnumber2-00-08543.Thereis abreak-awayhole
on the rear panel which must be removed before
connectingthe flexpipe.The pipe shouldbe runout-
side and terminate to the side or below the vent pipe
outlet so the flue outlet is more than 12" from the
inlet cover. The maximum length run of this pipe is
15 feet. If a longer run is needed, the size must be
increasedto 3".Inlet cover part number 1-10-08542
should be used to keep birds, rodents, etc.out of
pipe. HRV
Wheninstallingina housewithaHeatReclaim-
ing Ventilation System (HRV) be sure the system is
balanced and is not creating a negative pressure in
the house.
IMPORTANT NOTICE
PelletVentPipe orPLVentPipe Must beused.
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14
#1 Preferred method
This methodprovides excellent ventingfor nor-
mal operation and allows the stove to be installed
closest to the wall. Two and a half inches from the
wall is safe; however, three inches allows better
access to remove the rear panel. The vertical por-
tionof the vent shouldbe three to five feet high.This
vertical section will provide natural draft in the event
ofapowerfailure.Note:Do notplace jointswithin
wall pass-throughs.
Fig.25
Fig.26
Venting
KEEP COMBUSTIBLES (SUCH AS
GRASS, LEAVES, ETC.)AT LEAST 3
FEET AWAY FROM THE FLUE OUTLET
ON THE OUTSIDE OF THE BUILDING.
CAUTION
3 ft.
tocombustibles
#2 Preferred method
This methodalso provides excellentventingfor
normaloperationbutrequires thestove tobe installed
farther from the wall. The vertical portion of the vent
should be three to five feet high and at least three
inches from a combustible wall. This vertical sec-
tion will provide naturaldraft in the event of a power
failure.Note:Donot placejoints withinwall pass-
throughs.
Combustibles
allowed
beyond3 ft.
3 ft.
tocombustibles
Combustibles
allowed
beyond3 ft.
3 ft.
tocombustibles
3 ft.
tocombustibles
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15
This methodprovides excellent ventingfor nor-
mal operation. This method also provides natural
draft in the event of a power failure. If the chimney
condition is questionable you may want to install a
liner as in method #7.
Fig.27
Venting
Fig.28
This methodprovides excellent ventingfor nor-
mal operation. This method also provides natural
draft inthe event of a power failure.
The damper area must be sealed with a steel
plate or fiberglass. A cap should be installed on the
chimney to keepout rain. If the chimney condition is
questionable you may want to install a liner all the
way to the top as in Method #6.
#4 Installing into an existing
chimney (US only)
#5 Installing into an existing
fireplace chimney (US only)
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16
This methodprovides excellent ventingfor nor-
mal operation. This method also provides natural
draft in the event of a power failure.
In Canada and some places in the US it is re-
quiredthat the ventpipe extendall the way to the top
of the chimney.
In this method a cap should also be installed
on the chimney to keep out rain. Be sure to use ap-
proved pellet vent pipe fittings. Seal pipe joints with
silicone in addition to the sealing system used by
the manufacturer. Pipe size should be increased to
4" using this method.
This methodprovides excellent ventingfor nor-
mal operation. This method also provides natural
draft in the event of a power failure.
In Canada and some places in the US it is re-
quiredthat the ventpipe extendall the way to the top
of the chimney. The pipe or liner inside the chimney
should be 4"diameter.
In this method a cap should also be installed
on the chimney to keep out rain. One disadvantage
of this method is that it is harder to clean the vent
pipe, therefore, there is a tendancy not to do it as
often as needed.
Fig.29
Fig.30
Venting
#6 Installing into an existing fireplace
chimney (US and Canada)
#7 Installing into an existing
chimney (US and Canada)
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17
Min.abovegroundlevel
18"
Minimumfluevent configuration
It is recommended that
outside air be installed with this
venting configuration to reduce
smoke and creosote smell in the
room in the event of power failure.
#8 Installing through the ceiling vent
Through the ceiling vent, follow PLvent
manufacturers recommendations when using wall
andceilingpass through.Note: Do not place joints
within wall pass-throughs.
PL vent manufacturer's
firestop spacer and
support No insulation or
othercombustible
materials are
allowed within 3"
of the PL vent
pipe.
Storm collar
Flashing
3" min.
3" min. 3" min.
12" min.
(See Page 9 for
cornerinstallation
clearances)
Fig. 31 Fig. 32
Fig. 33
Venting
Shaded area represents the
minimumclearanceto combustible
materials such as shrubery,
mulch or tall grasses.
36"
36" min clearance to any
combustible material
12" min. wall to outlet
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18
Venting
Requirements for Terminating the Venting
WARNING: Venting terminals must not be re-
cessed into a wall or siding.
NOTE: Only PL vent pipe wall pass-throughs
and fire stops should be used when venting through
combustible materials.
NOTE: Always take into consideration the ef-
fect the prevailing winddirection or other wind cur-
rents willcausewithflyashand/orsmoke whenplac-
ing the termination.
Inaddition,thefollowing mustbe observed:
A.The clearance above grade mustbe a mini-
mum of 18".1
B. The clearance to a window or door that may
be opened must be a minimum of 48" to the side
and 48" below the window/door, and 12" above the
window/door. 1
( with outside air installed, 18” )
C. A 12" clearance to a permanently closed
window is recommended to prevent condensation
on the window.
D. The vertical clearance to a ventilated soffit
located above the terminal within a horizontal dis-
tance of 2 feet (60 cm) from the center-line of the
terminal must be a minimum of 18".
E.The clearance to anunventilatedsoffit must
be a minimum of 12".
F. The clearance to an outside corner is 11"
from center of pipe.
G. The clearance to an inside corner is 12".
H. Aventmust notbe installedwithin3 feet (90
cm) above a gas meter/regulator assembly when
measuredfromthe horizontalcenter-line of the regu-
lator.1
I.The clearance toservice regulator ventoutlet
must be a minimum of 6 feet.1
J. The clearance to a non-mechanical air sup-
ply inlet to the building or the combustion air inlet to
any other appliance must be a minimum of 48”.
1
K. The clearance to a mechanical air supply
inlet must be a minimum of 10 feet.1
(with outside air installed, 6 feet)
L. The clearance above a paved sidewalk or a
paved driveway located on public property must be
a minimum of 7 feet.1,2
M.The clearanceunderaveranda, porch,deck
or balcony must be a minimum of 12 inches.1,3
NOTE: The clearance to vegetation andother
exterior combustibles such as mulch is 36” as mea-
sured from the center of the outlet or cap. This 36”
radius continues to grade or a minimum of 7 feet
below the outlet.
1CertainCanadianandor Localcodesor regu-
lations may require different clearances.
2Avent shallnotterminatedirectly abovea side-
walk or paved driveway which is located between
two single family dwellings and serves both dwell-
ings.3Only permitted if veranda, porch, deck, or bal-
cony is fully open on a minimumof 2 sides beneath
the floor.
NOTE: Where passage through a wall, or
partition ofcombustibleconstruction isdesired,
the installation shall conformto CAN/CSA-B365.
(if in Canada)
VA
= Vent terminal = Air supply inlet
Fixed
Closed
Openable
Openable Fixed
Closed
Inside
Corner
Detail
= Area where terminal is not permitted
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19
Inspect the hopper lid sponge gasket. It is important
to maintaina good hopperlid seal.
Do not allowpellets or sawdust to remain
on thehopper lipafter filling.
Controldoor finger
hole
Draft Meter hex plug
HI-LO Distributionblower speed
range switch
Maintenance - Cleaning Glass on View Door
The unit should be out and cool to clean the door glass. It may not always be possible to allow
the unit to cool off before cleaning. Therefore, if the unit is turned to the lowest setting about 1 hour
before cleaning, it will make it possible to clean the glass with the unit in operation.
Any glass cleaner with a high amonia content willwork the best. Use only non-synthetic cleaning
rags such as cotton or paper towels.
CAUTION:Take carewhen sprayingcleaner on the sidesurface of theglass.The glassmaybe
hotenough tocause undesirablefumestofill thearea aroundthe unitveryrapidly.Gloves and
eye protection are recommended.
Glass Gasket
Replace glass
only with high
tem perat ure
ceramic glass.
Inspect door gasket during
cleaningand inspection
Fig. 34
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20
1. Removethe two heat exchangercovers. See Fig.
35.Thesecovers are madeof castironandare held
into place with a swing latch in the upper right and
left corners. See Fig 36. Swing the latch upward far
enough to release the top edge of the heat
exchanger cover. Tilt the cover forward
approximately2"andliftit upwardabout 1"to release
the bottom edge. The cover can now be taken
completely out through the upper door opening.
Repeat the process withthe secondheatexchanger
cover.
Maintenance - Cleaning
Heat Exchangerchannel cover latch
Fig. 36
Fig. 35
Cleaning Internal Components
Feeder Chamber
This chamber may get a buildup of fines from the
feeder mechanism movement. This area should be
checked and cleaned at least once a year.
To remove the feeder cover:
• Remove the 5/16" wing nut.
• Slide the cover off of the threaded stud.
• Inspect and clean the inner chamber if necessary.
See above picture.
• Reinstallthe cover makingcertainit is centeredon
the feeder body and tighten as tightly as you can by
hand.
Possiblepelletfines buildup area.
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