Lennox Hearth T300P Care And Operation, Fuel Requirements, Pellet Feed / Pellet Size, Clinkering

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FUEL REQUIREMENTS

CARE AND OPERATION

FUEL REQUIREMENTS

Using the UltraGrate burn system, this appliance has been designed to burn wood residue pellets with up to 3% ash content. Agricultural pellets (i.e…corn, alfalfa etc.) are not permitted to be burned in the stove. Dirty fuel will adversely affect the performance of the stove.

Caution: The use of unapproved, dirty, wet and / or high salt content fuel will void the warranty!

Wood pellets manufactured to the Pellet Fuels Institute (P.F.I.) certification standard are available in two grades, standard and premium. The primary difference between the two is the ash content of the pellets.

The P.F.I., specification for standard grade & premium grade residential pellet fuel is as follows:

CHLORIDES (Salt): Less than 300 p.p.m..

BULK DENSITY: 40 lb. / cu. ft. minimum

MOISTURE CONTENT: 8% maximum

ASH CONTENT: < 3% maximum (standard grade) < 1% maximum (premium grade)

FINES: 0.5% maximum through a 1/8” screen

Pellet Feed / Pellet Size:

The pellet feed system is designed to handle a wide range of pellet sizes up to a maximum of 5/16" diameter. Different pellets may feed at considerably different rates. You may notice a difference in the burn if you change pellet fuel sizes. The longer the pellet, the slower it will feed and vice versa. If the stove will not stay burning at the minimum fuel feed setting, those particular pellets may not be feeding fast enough. If this happens, reduce the amount of combustion air by adjusting the damper. See page 8 before adjusting the damper.

Long Burn Time:

When operated correctly, this appliance cannot be over- fired. Continuous operation at a maximum burn can, however, shorten the life of the electrical components (blowers, motors, and electronic controls), and is not rec- ommended. Typical approved operation would include running at the low to mid range setting with occasional running on the maximum setting during the coldest peri- ods of the winter. The blower speed control should be turned to high when operating the stove on the high heat setting. A lower heat setting is recommended for over- night operation or when the room is vacated for long pe- riods of time.

Note: See Fuel Delivery Rate on page 18 for burn times.

CLINKERING

Silica (or sand) in the fuel, along with other impurities, can cause clinkering. A clinker is a hard mass of silica formed in the burning process. Clinkering is a function of the fuel, (not the stove), but adversely affects the per- formance of the stove by blocking off the air passages in the grate. Even P.F.I. approved pellet fuel may tend to clinker. A clinker can be removed from the UltraGrate and placed in the ash pan with the use of the grate scraper / ash pan tool furnished with your stove. See Routine Maintenance, pages 22-25 for more information on cleaning.

ASH

The frequency of removal of the ash and maintenance performed on the stove is directly proportional to the ash content of the fuel and the operation duration of your pel- let stove. Low ash fuel may allow longer intervals be- tween cleaning, however, a stove burning high ash fuel may need to be cleaned as often as everyday.

PLEASE NOTE: Lennox Hearth Products has no control over the manufacturing of pellet fuel and will not be held responsible for poor stove performance or any damage caused by inferior pellet fuels.

FUEL FEED RATES

Different brands of pellets will feed at varying rates due to their size and density (length and diameter). This may require a slight adjustment in the damper control (see page 8) or the fuel feed trim to compensate (see Note on page 16).

UltraGrate

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Contents Freestanding Model T300P Series FREESTANDING PELLET FIRED STOVESRETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE IMPORTANT WARNINGS TABLE OF CONTENTS PLANNING YOUR INSTALLATION T300P SERIES FLOOR PROTECTIONCLEARANCES MANUFACTURED MOBILE HOME INSTALLATION INSTALLATIONINSTALLING LEG LEVELING BOLTS INSTALLATION CHECK LISTDAMPER ADJUSTMENT DAMPER ROD INSTALLATIONPulled Back 3 Notches Fig. ATerminal Block for Thermostat THERMOSTAT INSTALLATIONLeave Jumper on, If Thermostat Is NotUsed Remove Jumper if Thermostat IsTo Be UsedVENTING REQUIREMENTS VENT TERMINATION Chimney Height RequirementsManufactured Mobile Home DETERMINING SIZE OF PIPE TO INSTALL INSTALLING YOUR PELLET STOVE Page Installation Configurations / Standard Venting Options This appliance may be connected to an existing flue or by installing listed type “PL” vent pipe. If a liner is run all the way to the top of the existing chimney, the existing flue should be sealed with a steel plate. Start a vertical run with a Tee at the back of the stove. Other options are illustrated below. Note See page 11 for Vent Termi- nation Requirements CONTROL BOARD OPERATION CARE AND OPERATIONStart-upSequence of Events Fuel Delivery Rate Combustion Voltage Trim StepsManual Operation Lighting Procedure Without IgniterAutomatic Operation Turning Off Your StoveAUTOMATIC SAFETY FEATURES Power Outage DAMPER ADJUSTMENT GUIDELINEDAMPER OPERATION OverheatingPellet Feed / Pellet Size FUEL REQUIREMENTSLong Burn Time CLINKERINGROUTINE CLEANING ROUTINE MAINTENANCEASH PAN Ash PanAnnual Maintenance Procedure Clean Photoeye Lens Photoeye Access Inside HopperClean Filter Lens Clean-OutTee Remove Filter and Wipe CleanRemove cover, then remove ash Clean-OutTee w/ Cover RemovedHEAT EXCHANGER TUBES Tube ScraperDOOR ROPE GASKET SPECIFICATIONS - Model T300P Series DEFINITIONS WIRING DIAGRAM PROBLEM TROUBLESHOOTING Qualified Technicians OnlySOLUTIONS CAUSES4. Blowers will REPLACEMENT PARTS LIST Misc. Parts AugerREPLACEMENT PARTS DIAGRAMS 14 20 15 Optional Accessories OPTIONAL ACCESSORIESCatalog # Model #INSTALLATION TIPS SIMPLE OPERATING INSTRUCTIONS LABEL T300P PELLET STOVE SAFETY LABEL SERVICE AND MAINTENANCE LOG 1110 West Taft Avenue Orange, CA