Harman Stove Company Accentra 2 User Manual

Installation & Operating Manual

The Harman Accentra-2 Pellet Stove

“Ce manuel est disponible en Français sur demande”

SAFETY NOTICE

PLEASE READ THIS ENTIRE MANUAL BEFORE YOU INSTALL AND USE YOUR NEW ROOM HEATER. FAILURE TO FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY, OR EVEN DEATH.

FOR USE IN THE U.S. AND CANADA. SUITABLE FOR INSTALLATION IN MOBILE HOMES IF THIS HARMAN ACCENTRA PELLET STOVE IS NOT PROPERLY INSTALLED, A HOUSEFIRE MAY RESULT. FOR

YOUR SAFETY, FOLLOW INSTALLATION DIRECTIONS. CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONSAND 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. CETTE GUIDE D'UTILISATION EST DISPONIBLE EN FRANCAIS. CHEZ VOTRE CONCESSIONNAIRE DE HARMAN STOVE

COMPANY.

SAVE THESE INSTRUCTIONS.

Introduction

This heating appliance does not just have automatic ignition, it has total automatic temperature control. The Accentra has an input heat range from 0 to 40,000 BTU's. This patented feed system has a maximum feed rate 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. The unit has an easy to clean combustion system with an ash pan that holds ash from 1 ton of burned premium pellets. The control is designed for easy and efficient operation. It has 2 automatic modes of operation and 2 manual modes of operation.

The Accentra uses a small room sensor rather then a wall thermostat for a more accurate temperature control. This unit is equipped with several different safety devices which will be explained later in this manual.With its specially designed burn pot and the "Advance Ignitor" Automatic Ignition System, the unit can burn a large variety of biomass fuels with varying ash content. The accordian style cast iron heat exchanger system allows maximum surface area for the most efficient heat transfer in a smaller firebox.

Please copy your serial number from the label on your stove to the box below.

SERIAL NUMBER

SAFETY NOTICE: IF THIS HARMAN ACCENTRA PELLET STOVE IS NOT PROPERLY INSTALLED. A HOUSE FIRE MAY RESULT. FOR YOUR SAFETY, FOLLOW THE INSTALLATION DIRECTIONS CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA.

Table of Contents

Automatic Operation 4 Manual Operation 6 ESP Control 8 Assembly & Installation 9 Venting 14 Maintenance 20 Trouble-Shooting 25 Specifications 26

Harman Stove Company

352 Mountain House Road

Halifax, PA 17032

sales@harmanstoves.comsales@harmanstoves.com

Wiring Diagram 27 Feeder Parts 28 Parts List 29 Warranty 30

Automatic Ignition/Operation

...

The Accentra pellet stove is more than just automatic ignition, it is also automatic temperature control. The automatic system will allow the fire size to be adjusted to match the 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 and adjust the fire size to match the heating need. The totally automatic room sensor mode is recommended because of its efficiency. The unit can be switched between "AUTO" and "MANUAL" at any time during operation.

Fig. 1

Room Temperature Mode: This setting will produce a room temperature of 70 degrees with the distribution blower at medium speed.

Stove Temperature Mode

This setting will produce medium heat with the distribution blower on "low".

This setting will produce continuous maximum heat output with the distribution blower at full speed.

Fig. 2

Igniter switch to "AUTO" Room Temperature Mode

In "Room Temp Mode" heat output is controlled automatically by the Room Sensing Probe. When the Room Sensing Probe calls for heat, the stove will increase output. When the Room Sensing Probe is getting close to the set temperature, the stove will begin to level off output and keep the fire burning at just the right temperature to maintain that setting.

High output is determined by the feed rate setting. This setting, generally on #4, can be increased if higher burn rates are necessary (Fig. 1). The unit's maximum burn rate should not create less then 1" of ash on the burn pot front edge(See Fig.4). Overfeeding is not a safety concern, but fuel may be wasted if unburned pellets fall into the ash pan.

In "Room Temp Mode" a constant fuel consumption rate is sacrificed for exact room temperature. Therefore, as it gets colder more pellets will be burned automatically.

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 regardless of room temperature (See Fig 2). The unit's maximum 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 will not go out unless it runs out of fuel or is turned off.

Shut-Down Procedure

To kill the fire or stop burning the stove, turn the Mode 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 you pull the plug to shut down the stove, all motors will stop. This may cause incomplete combustion and smoke in the firebox. If the load door is opened the 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 automatically.

Automatic Start Up

Starting First Fire

Ignitor Switch to"AUTO" (down position)

Make sure the unit is plugged into a 120 VAC, 60 HZ electrical source. The power light should be the only light lit.

Fig. 3

See Note 7.

Fig. 4

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 motor for exactly one minute. Turning to "TEST" again and again may purge too much fuel into the burn pot causing excessive smoke on startup.

3. The firebox low pressure switch will not allow the auger motor or the igniter element to operate if the view door is 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 number and will probably need to be increased. After you know a feed rate setting that works well, use that setting. Remember, if your feed rate is too high you may waste fuel.

5. This is usually a weekly maintence procedure. Cleaning the burn pot with the scraper with a small amount of new fuel in the bottom is not a problem. First, scrape the ashes on the 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. The ash pan can hold the ashes from approximately 1 ton of premium fuel. This means the ashes will only need to be emptied a few times a year.

7. Setting the feed adjuster # for maximum burn: With the unit burning in "AUTO", turn to "Stove Mode" and put the fan on "H". Set the Temperature Dial to #7. Allow the unit to burn for about 30 minutes and check ash on front of burn pot. Fig. 4. If the ash line is larger than 1", turn the feed adjuster from #4 to #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 is only a maximum burn rate and at most normal settings the ash bed will be larger.

1. Turn Mode Selector to "OFF".

2. Fill hopper with pellets.

3. Clean burn pot with scraper, if necessary.

4. If starting after an empty hopper, turn Feed Adjuster to "TEST" (for one 60 second cycle). This will purge pellets into the auger tube and also allow you to check the motors for operation. NOTE:

The auger motor will not operate with the view door or ash pan door open.

5. Turn Feed Adjuster to #4.

6. Flip the Ignitor Switch down into the "AUTO" position.

7. Turn the Temperature Dial to desired room temperature.

8. Turn Mode Selector to Room Temperature or Stove Temperature.

9. Fill hopper with pellets and remove ashes as required.

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.

Warning

NEVER USE GASOLINE, GASOLINE-TYPE LANTERN FUEL, KEROSENE, CHARCOAL LIGHTER FLUID, OR SIMILAR LIQUIDS TO START OR 'FRESHEN UP' A FIRE IN THIS HEATER. KEEP ALL SUCH LIQUIDS WELL AWAY FROM THE HEATER WHILE IN USE.

Manual Ignition/Operation

...

The Accentra Pellet Stove is capable of manual operation. This also allows the operator 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 during operation.

Fig. 5

Room Temperature Mode: This setting will produce a room temperature of 70 degrees with the distribution blower at medium speed.

NOTE: When starting the unit in the "AUTO" mode and switching to "MANUAL", the fire must be large enough to start the distribution blower. The starting of the blower is a signal that the start cycle is completed and the fire will not go out.

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 Operation". Turn to "Manual" position when the fire is established.

The difference between "AUTO" Room Temperature Mode and "Manual" Room Temperature Mode is that the fire will not go out as the room temperature goes above the control board 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.

Manual Stove Temperature Mode

WARNING: HIGH VOLTAGE

Disconnect power before opening cover.

This setting will produce a large viewing fire without a distribution blower operating.

Ignitor Switch to "MANUAL" Stove Temperature Mode

The advantage of this mode is to allow the operator to have a large viewing fire without blowing extra 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 operate 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.

An example of when to use the Manual Stove Temperature Mode is if you want to watch a large fire and the room is aleady up to temperature. The Stove Temperature Mode allows you to have a larger fire and a lower sound level, without the distribution blower.

NOTE: During the use of this mode, if you keep increasing the temperature dial setting to increase the fire size, the distribution blower will automatically come on when the ESP Temperature reaches 350o F, or 81% output.

Fig. 6

Manual Start Up

Ignitor Switch to"MANUAL" (up position)

Fig. 8

Make sure the unit is plugged into a 120 VAC, 60 HZ electrical source. The power light should be the only light lit.

Starting First Fire

Fig. 7

See Note 7.

Fig. 9

2. The "TEST" cycle will operate the feeder motor for exactly one minute. Turning to "TEST" again and again may purge too much fuel into the burn pot causing excessive smoke on startup.

3. The firebox low pressure switch will not allow the auger motor or the igniter element to operate if the view door or the 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 number and will probably need to be increased. After you know a feed rate setting that works well, use that setting. Remember, if your feed rate is too high you may waste fuel.

6. The ash pan can hold the ashes from approximately 1 ton of premium fuel. This means the ashes will only need to be emptied a few times a year.

7. Setting the feed adjuster # for maximum burn: With the unit burning in "AUTO", turn to "Stove Mode" and put the fan on "H". Set the Temperature Dial to #7. Allow the unit to burn for about 30 minutes and check ash on front of burn pot. Fig. 9. If the ash line is larger than 1", turn the feed adjuster from #4 to #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 is only a maximum burn rate and at most normal settings the ash bed will be larger.

1. Turn FEED ADJUSTER to desired feed

rate. No. 4 is good for most pellets.

2. Turn the MODE SELECTOR to “OFF” and

then to the desired mode. This will reset

control and start the combustion motor.

3. Turn the TEMPERATURE DIAL to the de-

sired setting.

4. Clean burn pot with scraper if necessary.

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 into pellets for fast lighting.

7. Light starting gel with a match, and close

the door. Operation will begin when the fire

reaches the proper temperature.

8. Fill hopper with pellets and remove ashes

as required.

1, 6

Notice when using Optional Battery Back-Up:

Warning

ESP Control

Mode Selector

Allows you to choose between Room Temp Mode, Stove Temp Mode, or OFF. Also allows you to vary the distribution blower speed by turning the knob to the high or low side of each mode.

Distribution Blower speed adjustment range. L = low H = high Variable speed anywhere between L and H; although as the stove temp. goes up , so does the L and H scale.

Igniter switch

Set to appropriate Start-Up mode.

Test

Runs all motors at full speed for one minute to check operation. After two minutes the stove will go to minimum burn and the blowers will alternate from high to low every minute to remind you that you are still in "Test Mode".

Feed adjuster

Sets the maximum feed rate

Dealer Diagnostic Port

For dealer maintenance only. Requires special DDM monitor supplied to Harman Dealers exclusively.

Temp dial

Allows you to adjust the room temperature in Room Temp Mode using the outer scale marked in degrees Fahrenheit. It also allows you to adjust the stove temperature while in Stove Temp Mode using the inner scale marked from 1 to 7.

Indicates igniter is on.

Indicates power to the feed motor.

Indicates power to combustion blower

Indicates power to distribution blower.

Status Light

Will be lit in either stove or room temp mode when pointer is not within off position band except after normal shut down. Blinks to indicate errors listed below.

Power Light

Indicates power to the control.

Status light error messages:

1 Blink: Indicates control board self diagnostic fail-

ure. This requires a manual reset*. 3 Blinks: Indicates ESP (Exhaust Sensing Probe) failure. This requires a manual reset*. 4 Blinks: Can occur only in Room Temp Mode and indicates Room Sensing Probe failed or not installed. If a Room Sensing Probe is then installed, the status light will automatically reset. NOTE: Unit will not 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 start cycle. To reset - Turn Mode Selector 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 and reconnect. If error still occurs call your Dealer.

Installation

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 result 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 installation to ensure compliance with local codes, including the need for permits and follow-up inspections.

Several issues must be addressed when selecting a suitable location for your Accentra Pellet Stove. Observing required clearances to combustible materials, the proximity to a safe chimney or venting system, and the accessibility of electrical supply must all be considered. In addition, selecting a location that takes advantage of the building's natural air flow is also desirable to maximize the heating effectiveness of the heater. In many cases, this is a central location within the building.

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 the stove on a noncombustible floor surface. If the floor surface is made of a combustible material, (such as carpet, vinyl or wood), a noncombustible material 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 protector1. The Harman Cast Iron Floor Protector is equal to the minimum dimensions, which are 241/

x 285/ allows for a 2" extension on each side of the unit and a 6" extension to the front of the ash opening (33/8"2 if measured from the base plate front edge.) The rear edge of the floor protection can be flush with the 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.

This

285/8"*

5"min.

6.25"

2.25"

12"

14.75"

6.25"

FLOOR PROTECTOR

(*Harman Cast Iron Floor Protector size)

This is the minimum size Harman

recommends for the alcove with a 60" ceiling.

14.75"

24"

5"min

Fig.10

Fig.11

Fig.12

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.

CAUTION

The stove is hot while in operation.

Keep children, clothing and furniture away.

Contact may cause skin burns.

2.25"

54"

1. Check your local codes to see if protection is required under the flue pipe.

2. This measurement equals 6" from inside edge of ash door opening.

3. 5" pipe clearance to wall in a corner installation.

Fig. 13

Installation

IMPORTANT NOTE: The Accentra unit is shipped

bolted to the skid through two 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.)

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 will not be transferred by direct contact. These rubber pads have a threaded stud that extends through the base plate. The top of the threaded stud has a screwdriver slot. Therefore, the unit can be leveled from 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.)

Skid bolt down holes/floor lag down holes

Fig. 14

Leveling/vibration-dampening feet

Fig. 15

+ 20 hidden pages

Harman Stove Company Accentra 2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual