Harman Stove Company The Harman Accentra Pellet Insert User Manual

Installation & Operating Manual

The Harman Accentra Pellet Insert

“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 INSERT IS NOT PROPERLY INSTALLED, A HOUSEFIRE MAY RESULT. FOR

YOUR SAFETY, FOLLOW INSTALLATION DIRECTIONS. 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. CETTE GUIDE D'UTILISATION EST DISPONIBLE EN FRANCAIS. CHEZ VOTRE CONCESSIONNAIRE DE HARMAN STOVE

COMPANY.

SAVE THESE INSTRUCTIONS.

Introduction

The Accentra Insert will give you more heat, better temperature control and a level of convenience you won’t fi nd in any other pellet insert. The Accentra Insert’s many outstanding features make it the best value pellet insert on the market today.

The Accentra’s versatile design lets you convert a heat wasting fireplace into an efficient heating so urce. The Accentra Insert could also be a fireplace hearth for your home that doesn’t require a chimney. A special zero clearance fireplace kit converts the

Accentra insert into a fireplace that can be placed in virtually any corner or against any wall of your home. You can choose from a variety of mantels and facings that complement your homes décor.

The Accentra’s on-board microprocessor constantly senses room temperature and automatically makes adjustments in the feed

rate and air supply so you get just the right amount of heat 24 hours a day. This remarkable technology lets you fill the hopper, set the desired temperature and walk away. The Accentra insert lights automatically, brings the room up to the exact temperature and will turn off if no heat is required. No other pellet insert offers such accurate and trouble free temperature control. The control technology gives you the widest heat output range of any insert on the market making it an ideal choice to take the chill off in the spring and fall and to heat your home during the coldest months of the winter.

As with all Harman pellet stoves, maintenance is minimal and cleaning is easy. The Accentra Insert lets you burn close to a ton of pellets before ash removal is needed. And what is even better, the Harman Insert Track System lets you slide the insert out of the fireplace so that it can be cleaned or serviced without having to disconnect the venting system. This innovative design is only available on Harman pellet inserts and lets you reach key components for yearly cleaning.

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

SAFETY NOTICE: IF THIS HARMAN 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.

Harman Stove Company

352 Mountain House Road

Halifax, PA 17032

sales@harmanstoves.comsales@harmanstoves.com

SERIAL NUMBER

Table of Contents

Automatic Operation 4 Manual Operation 6 ESP Control 8 Assembly & Installation 9 Venting 21 Maintenance 28 Trouble-Shooting 33 Specifications 34 Wiring Diagram 35 Feeder Parts 36 Parts List 37 Warranty 38

Automatic Start Up

Fig. 1

Fig. 2

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. 1. 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.

See Note 7.

Starting First Fire

Igniter Switch to"AUTO" (up position)

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

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 Igniter Switch up 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.

10. Store pellet fuel in a dry area away from all ignition sources and above all limits of the stove's clearance requirements to combustibles. Do not store the fuel were it interferes with the refueling of the stove or emptying of ashes. Do not store any ashes removed from the stove near the fuel or other combustible materials.

WARNING

BURNING GARBAGE, USE OF IMPROPER FUELS, FIRE STARTERS OR ALTERING THE STOVE FOR HIGHER HEAT OUTPUT MAY CAUSE DAMAGE TO THE STOVE AND COULD RESULT IN A HOUSE FIRE. USE ONLY APPROVED FUELS AND OPERATION GUIDELINES.

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.

Automatic Ignition/Operation

The Accentra Insert 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 Insert 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. 3

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. 4

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 than 1" of ash on the burn pot front edge(See Fig.2). 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.

Igniter 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 4). The unit's maximum feed rate should not create less than 1" of ash on the burn pot front edge. See Fig 2.

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.

Manual Start Up

Igniter Switch to"MANUAL" (down position)

Fig. 6

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. 5

See Note 7.

Fig. 7

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. 5. 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:

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

Manual Ignition/Operation

The Accentra Insert 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. 8

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.

Igniter 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

Igniter 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.

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

Fig. 9

ESP Control

Power Light

Indicates power to the control.

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.

Indicates power to distribution blower.

Indicates power to combustion blower

Indicates power to the feed motor.

Indicates igniter is on.

Feed adjuster

Sets the maximum feed rate

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".

Igniter switch

Set to appropriate Start-Up 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.

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.

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.)

Mode Selector

Dealer Diagnostic Port

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

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.

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: Removing unit from skid

How to Reduce the Weight for Installation

1. Remove the top/lid assembly and side panels.

Note: Removal of the cast hopper lid itself is

•

NOT necessary or recommended.

Note: The hopper lid must be in the "OPEN" position

•

before the top/lid assembly can be lifted off or reinstalled on the stove body.

There are (4) 1/4-20 x 1/2" flange head bolts securing

•

the top/lid assembly to the stove body. They can be removed from the underside with a 3/8" socket.

The cast top and lid assembly bolt down bars:

On each side of the stove body, underneath the cast top, are (2) 1/4" flange head bolts.See Fig. 12. These bolts pull the cast top and lid assembly down onto the hopper gasket to seal the hopper. They also allow for a small amount of front to back adjustment for alignment of the top into the wing pockets.

Bolts require a

3/8" socket.

(View looking up under the cast top.)

Fig. 12

Top bolt down bar

Fig. 10

Be careful not to damage the distribution blower located under the insert. There are guards on both sides of the motor to allow the insert to rest on a flat surface, however, extra care should be taken.

Distribution Blower

Protector Angles: These angles are designed to protect the blower motor from damage when placed on a flat surface. Be careful where and how the stove body is handled.

Remove the cast side panels by lifting them upward off of the hinge pins. See Fig. 13.

Top and Lid Assembly

Mounting Shell

Fig. 11

(2) Spring Latches

(One on each side)

Ash Pan

Center

Medallion

Flame Guide

Heat

Exchanger

Cover

Internal Cast Iron (4) pieces

Fig. 13

Lasered hinge pin pivoting point

Up and down clearance adjustment slots.

Installation

Cast side panel hinge

Removing the Center Medallion

Lift up on the 2 bottom corners of the medallion until

•

it is higher than the top of the flame guide.

•

Pull the bottom edge of the medallion front approxi-

mately 1 inch.

•

Pull downward on the corners of the medallion until the top is released from the 2 retainers that keep the top aligned when in place.

•

Note: The heat exchanger covers will tilt to the front when the center medallion is removed.pproximatlely

12”, but the left side tube requires the total length of the

brush to be used.

Center Medallion

3rd: DOWN

1st:UP

2nd: OUT

How to Reduce the Weight for Installation, cont'd

2. Remove the door by swinging it open approximately 90o and lift it upward until it clears the hinge pins.

3. Remove the ash pan

4. Remove the (4) internal pieces of cast iron. See Fig. 14 and 15.

Flame guide

Burn Pot

Fig. 14

Removing the Heat Exchanger Covers

• Remove the heat exchanger cover by lifting it upward about 1/2 inch and move the bottom edge front until it sits flat on the firebox bottom.

• Rotate the edge of the heat exchanger closest to the burnpot until it is in front of the burnpot.

• Tip the top of the heat exchanger toward the middle of the opening until it can be lifted up and out.

Lifting tab

Fig. 15

Installation

Beginning Installation

IMPORTANT: The mounting frame/surround

assembly and flue piping is the most critical part of the installation and must be done correctly and installed

securely.

1. Choose the chimney configuration that is best suited for the installation. See venting section.

• Note: If 100% outside air is desired or required, the

outside air option will need to be installed on the stoves body. (See instructions included with outside air kit (part #1-00-674080.) See Page 20.

2. Make sure the unit will fit into the fireplace opening. See Fig # 17. When installing in smaller fireplaces, test fit the mounting frame into the firebox. Note: The unit overhangs to the rear.

3. Install the 3 piece cast surround set to the sides and top of the mounting frame with the bolts and nuts supplied. The left and right side should be done before the center section is installed. Make sure the bolts are loose. Do not remove the side panel hinges. The left and right side wings should be standing up aligned with the side of the mounting frame and slid inward towards the center. Note:The wings mount on the rear side below the notch and on the front side above the notch. See Fig. 16 & 18. Slide the cast ash lip onto the frame and check to make sure it can go against the roped frame rails and fits into the pockets on the left and right cast sides. See Fig. 19. Install the center section.

Fig. 16

3" Outside Air starter collar

Notch

Ash lip slide rails

4. If the wing extensions are required they should be installed next.

Cast in front of the frame. Use (1)1/4-20 x 3/8 flange bolt from the rear.

Cast behind the mounting frame flange. Use (2) 1/ 4- 2 0 x5 / 8 flange bolts and nuts with bolts from the front.

Fig. 18

Fig. 17

Approximately 2" overhang

NOTE: The stove body extends through the mounting frame in the rear approximately 2".

Slide the ash lip casting into the frame, making certain the ash lip is sitting on the slide rails on either side. With the ash lip in place, adjust the surround sides so there is an even gap where the ash lip extends into the surround side and

tighten.

Fig. 19

Installation

Optional Wing Extensions

Optional wing extensions are made for fireplace openings which are larger than the cast wing. The 3 piece wing extension is 48" wide by 34"high. Custom oversized wing extensions can be purchased from Harman for any fireplace openings larger than the standard wing extension area. These optional wing extensions will have a 1/2 inch return bend as shown in fig. 20. Custom oversized wing extensions with a radius top can be ordered with a radius of your choosing. These radius top wings WILL NOT have a return bend, although they will be made of thicker metal to reduce warpage.

1/4-20 x 3/8 bottom head bolts (5/32" allen wrench)

Fig. 20

5. The power cord can be installed exiting the left (standard) or right side of the surround. If a right side cord is desired, follow the instructions below.

Connecting the cord retainer to the wing

With the three wing pieces completed, the cord retainer must be bolted to the bottom rear of the wing. Either left exit (shown in fig. 22) or right exit. At the bottom rear edge of the right and left wing there is a small radius indent for the cord to exit between the wing and the fireplace face.

(5/32" allen wrench)

Fig. 22

Changing the cord exit location from the left side to the right side:

The cord is located on the left side, standard from Harman. (See fig 21.) To route the cord to the right side:

• Cut the tyraps looping the cord to the left

• Reroute the cord along the top of the steel angle and

down the right side.

• Re-tyrap (not supplied by Harman) the wire through

the notches provided in the mounting frame. Then down the right side rail.

• Do not remove or move the cord retainer, it is made

to reach both the right and left sides.

Nothing can extend beyond this face to the back side.

NOT

CUT.

Fig. 21

Ground

Ty-raps

Fig. 23

6. You must now decide whether to install the room sensor as a wall sensor or as a return air sensor. Harman highly recommends that the room sensor be installed. If you are installing the room sensor as a wall sensor, the long black 2 wire cable must be Ty-rapped to the powercord. This wire is long enough to reach the end of the power cord so the installer can reach past the hearth to the location where the extension wire (18/ 2 thermostat wire, not supplied by Harman) can be spliced to go to the wall location chosen for the room sensor.

Installation

7. If the room sensor is used as a return air sensor rather than a room thermostat/sensor, the black cable will not be used. The room sensor itself (gray cable with black and red wires) will be connected to the blue twisted wires from the control board. Note: The stove body must be able to slide out of the shell to the limit of the power cord wires for cleaning and service. Therefore, if the room sensor is connected as a return air sensor, the wire should be connected long enough to allow this, but not too long that it would get tangled or pinched anywhere. Notice: The male/female connections between the mounting shell and the stove body should always be maintained. Wirenut or taped splices should never be used.

Connecting the room sensor as a return air sensor

• Insert the sensor end of the wire from the rear of the mounting frame through the hole as shown in fig. 24 .

• Tyrap the sensor end so that the sensing tip is in the middle of the front return air opening. See Fig. 25.

• Tyrap the sensor wire to the inside of the mounting frame up to the cord grounding location. Follow the power wiring to where you make the male/female terminal connection to the twisted blue wires. There are (2) crimp-on connectors in the hardware pack that must be installed on the internal ends of the room sensor wires.

8. Install the (4) 3/8-16 x 1" leveling bolts into the threaded holes in the bottom pan of the mounting shell. The front two leveing bolts may not be necessary, but the back two will need to be used to level the wing so that it is flush with the fireplace face. See Fig. 26.

1/2" threaded wedging rods

(5) bolt down holes

3/8 x 16 tapped

leveling bolt holes

Fig. 24

Fig. 26

Fig. 25

Side Return Air Holes

+ 25 hidden pages