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Installation & Operating Manual
The Harman Accentra-2 Pellet Stove
“Ce manuel est disponible en Français sur demande” R4
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 INST
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2 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 pe
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3 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 ca
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4 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. See Note 7. Fig. 3 1. Turn Mode Selector to "OFF". 1" 1 2. Fill hopper with pellets. 5 3. Clean burn pot with scraper, if necessary. 4. If starting after an empty hopper, turn Feed 2 Adjuster to "TEST" (for one 60 second cycle). This will purge pellets into the auger tube and also allow you to check t
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5 Manual Ignition/Operation The Accentra Pellet Stove is capable of manual operation. 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 during operation. 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 start
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6 Manual Start Up Starting First Fire 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. Fig. 7 1. Turn FEED ADJUSTER to desired feed See Note 7. 4 rate. No. 4 is good for most pellets. 1" 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. 5 4. Clean burn pot w
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7 ESP Control Mode Selector Dealer Diagnostic Port Temp dial Allows you to choose between Room Temp Mode, For dealer maintenance Allows you to adjust the Stove Temp Mode, or OFF. Also allows you to vary only. Requires special DDM room temperature in Room the distribution blower speed by turning the knob monitor supplied to Harman Temp Mode using the outer to the high or low side of each mode. Dealers exclusively. scale marked in degrees Fahrenheit. It also allows Distribution Blower you to adjus
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3 5"min 8 Installation When installing and operating your Harman 3 Accentra Pellet Stove, respect basic safety standards. 5"min. 6.25" 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 6.25" the
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9 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.) Skid bolt down holes/floor lag down holes Fig. 14 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
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10 Mobile Home Installation 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
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11 Low Draft Voltage Adjustment Combustion Motor Speed Control Low draft only set point. The small straight screwdriver slot is plastic; therefore, the unit can be adjusted while in operation. Fig. 18 Draft Meter bolt hole location Fig.17 A simple draft test should be performed after These units are pre-tested at the factory with exactly 120 Volts A.C., 60 Hz. They are checked and completing the flue pipe installation. To record the results for future reference: adjusted for firebox tightness,
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12 Room Sensor and Rear Shield Installation Rear Shields Room Sensor Installation 5/16" Hex Head Screws (2 on 5/16" Hex Head each side) Screws (2 on each side) Fig. 19 Fig. 20 The room sensor is a small temperature sen- The rear isolated shields are split in the middle for sor on the end of a 60" gray wire. This sensor is easy removal. Each shield has two 5/16" hex head installed much like a standard wall thermostat. Be- screws that only need to be loosened (NOT cause it is so small, it can be h
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13 Venting Venting A combustion blower is used to extract the com- IMPORTANT NOTICE bustion gases from the firebox. This causes a nega- tive pressure in the firebox and a positive pressure Pellet Vent Pipe or PL Vent Pipe Must be used. in the venting system as shown in fig. 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
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14 Venting #1 Preferred method This method provides excellent venting for 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- tion of the vent should be three to five feet high. This vertical section will provide natural draft in the event of a power failure. Note: Do not place joints within wall pass-throughs. 3 ft. to combustibles Combust
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15 Venting #4 Installing into an existing chimney (US only) This method provides excellent venting for 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 #5 Installing into an existing fireplace chimney (US only) This method provides excellent venting for nor- mal operation. This method also provides natural draft in the event of a power failure. The damper
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16 Venting #6 Installing into an existing fireplace chimney (US and Canada) This method provides excellent venting for 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- quired that the vent pipe extend all 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 ad
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17 Venting Storm collar 12" min. Flashing 3" min. 3" min. 3" min. PL vent manufacturer's No insulation or Minimum flue vent configuration firestop spacer and other combustible It is recommended that support materials are outside air be installed with this allowed within 3" of the PL vent venting configuration to reduce pipe. smoke and creosote smell in the room in the event of power failure. (See Page 9 for corner installation clearances) Fig. 31 Fig. 32 #8 Installing through the ceiling vent Th
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18 Venting Requirements for Terminating the Venting I. The clearance to service regulator vent outlet WARNING: Venting terminals must not be re- 1 must be a minimum of 6 feet. cessed into a wall or siding. J. The clearance to a non-mechanical air sup- NOTE: Only PL vent pipe wall pass-throughs ply inlet to the building or the combustion air inlet to and fire stops should be used when venting through 1 any other appliance must be a minimum of 48”. combustible materials. K. The clearance to a mech
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19 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 will work the best. Use only non-synthetic cleaning rags such as cotton or paper towels. CAUTION: Take care when sprayi
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20 Maintenance - Cleaning Cleaning Internal Components 1. Remove the two heat exchanger covers. See Fig. 35. These covers are made of cast iron and are 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 approximately 2" and lift it upward about 1" to release the bottom edge. The cover can now be taken completely out through the upper door opening. Repeat
