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Wood & Coal Burning Furnace
Owners Manual
Models: 24A, 30A
TESTED TO UL 391
All installations must be made in accordance with local and state codes
which may differ from this manual.
UNITED STATES STOVE COMPANY
227 Industrial Park Road
P.O. Box 151
South Pittsburg, TN 37380
USSC 851731 Page 1
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CHIMNEY INSTALLATION OVER FIRING Your new furnace must be installed into a "Class A" Chimney This generally occurs when the following procedures are not only. This type of chimney consists of a flue lined brick chimney, followed, ash door is open (even partially open), the feed or an approved "Class A" all fuel factory built (prefabricated) door pressure relief flap is open, the feed door is open or the type. Any other installation guarantees an immediate fire haz- manual draft spinner is open
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WELCOME WELCOME WELCOME WELCOME WELCOME ...to the world of solid fuel heating! Your new furnace has been designed and built with a high grade of materials and the strictest regard to quality. Before you start installing your new furnace, take the time to read these instal- lation and operating instructions. We have prepared them for your benefit to save time and provide some helpful knowledge on wood and coal burning. Save the instructions for future use. It won't take long for you to realize
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GENERAL RULES GENERAL RULES GENERAL RULES GENERAL RULES GENERAL RULES Rules for the Safe Installation and Operation of Your The furnace is designed to burn air dried wood and Furnace... coal at a predetermined firing rate. Over firing could result in damage to the heat exchanger and cause Check local codes, the installation must comply with dangerous operation. Over firing occurs when the strict conformance in regard to clearances. ash door is left open during operation or a highly volatile fu
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HOW HOW... ... HOW HOW HOW... ... ... How Your New Furnace Works Unlike conventional heating (gas, oil, electric), wood or coal heating requires more user attention. Your furnace, with its automatic combustion air blower, alleviates the constant need for adjusting the burn- WARNING ing rate common to other units on the market. The Note: Improper firing. Wood or coal over firing fire, however, must be started and subsequent fuel occurs when the ash door is left open during added by the user.
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INST INSTALL ALLA ATION TION INST INST INSTALL ALL ALLA A ATION TION TION Furnace location Before you start! Chimney location is also critical. The furnace must It is very important you check with your dealer, local be placed as close as possible to the chimney. You fire department, or building inspector. They will be want the chimney connector (smoke pipe) to have able to inform you of any state or local codes per- a minimum of elbows, two (2) or less. Also, the chim- taining to the locatio
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INST INSTALL ALLA ATION TION INST INST INSTALL ALL ALLA A ATION TION TION Your furnace is designed to be added on to existing Clearance to Combustibles duct work and operate either with or without another heat source such as a gas furnace. The following Furnace to back wall 30" diagrams illustrate acceptable ways of ducting your furnace. Furnace to side wall 12" Pipe to back wall 18" Clearance to Combustible Materials Your Furnace has been tested to determine the SAFE Pipe to side wall 18" clea
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FL FLUE RECOMMEND UE RECOMMENDA ATIONS TIONS FL FL FLUE RECOMMEND UE RECOMMEND UE RECOMMENDA A ATIONS TIONS TIONS CAUTION! Only a "Class A", all-fuel chimney in- tended for use with solid fuel should be used. "Class A" chimneys are those made from tile-lined masonry (brick or block) or an independent laboratory approved all- fuel factory-built chimney. WHAT SIZE CHIMNEY SHOULD BE USED? The Chimney size to use is either six (6) or (8) inch round or an 8 x 8" square. If you use a rectangular chim
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FL FLUE RECOMMEND UE RECOMMENDA ATIONS TIONS FL FL FLUE RECOMMEND UE RECOMMEND UE RECOMMENDA A ATIONS TIONS TIONS CHIMNEY INSTALLATION FACTORY-BUILT OR METAL CHIMNEYS With the chimney being the most important part to If your home has an existing metal chimney, the same rules your installation, great care should be given to its apply as with masonry chimneys. One thing to be espe- design. cially aware of is that "Class B" chimneys are for gas appli- ances only, not solid fuel burners. If purcha
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ASSEMBL ASSEMBLY ILL Y ILLUSTRA USTRATIONS TIONS ASSEMBL ASSEMBL ASSEMBLY ILL Y ILL Y ILLUSTRA USTRA USTRATIONS TIONS TIONS NOTE: Your furnace may come partially pre-assembled, but in the case that it is not, follow the instructions below. Also use these instructions for future maintenance and disassembly. Drawings and photos are for illustration purposes only. Actual parts may differ. Prior to assembling, place the unit in the general vicinity of the installation. This should help minimize
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ASSEMBL ASSEMBLY ILL Y ILLUSTRA USTRATIONS TIONS ASSEMBL ASSEMBL ASSEMBLY ILL Y ILL Y ILLUSTRA USTRA USTRATIONS TIONS TIONS 5a. Attaching furnace control center box. To sepa- 7. Wall thermostat should be mounted on an up- rate outer cover, remove two (2) side screws and stairs inside wall (no outside facing wall) prefer- pull off black rheostat knob. Attach box to left ably near your existing thermostat. For more spe- side (facing feed door) with four (4) self-thread- cific information, read
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ASSEMBL ASSEMBLY ILL Y ILLUSTRA USTRATIONS TIONS ASSEMBL ASSEMBL ASSEMBLY ILL Y ILL Y ILLUSTRA USTRA USTRATIONS TIONS TIONS CAUTION: Any hot air plenum connection to a fur- nace must be constructed of metal. 11. Installing Grates: Install grates together, slip shaker lug into hole and place grates into frame. Grate arch faces upward. Check out grate rotation by placing shaker handle on grate lug (3/4"). Grates 9. Installing collar to top: To install hot air attaching should rotate freely. c
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ASSEMBL ASSEMBLY ILL Y ILLUSTRA USTRATIONS TIONS ASSEMBL ASSEMBL ASSEMBLY ILL Y ILL Y ILLUSTRA USTRA USTRATIONS TIONS TIONS 13. Installing front and rear cast baffles, heat plates. 15. Installing smoke damper rod to sliding smoke NOTE: Grate frames and brick will slide forward damper. First, insert rod through hole above feed and backward to allow baffle to fit. Install front door and push forward. cast baffle using two (2) 5/16 bolts, nuts & wash- ers (7/16 wrench will be needed). Place the
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ASSEMBL ASSEMBLY ILL Y ILLUSTRA USTRATIONS TIONS ASSEMBL ASSEMBL ASSEMBLY ILL Y ILL Y ILLUSTRA USTRA USTRATIONS TIONS TIONS 17. To install Feed Door handle, insert handle into the 19. To install the dampers on the doors, screw the door then attach with the 1/2-13 nut and washer damper up onto the 1/2-13 carriage bolt pro- provided. Tighten nut against the backside of vided. Then screw the damper and bolt into the the door then back it off approx. 1/4 turn or until door until the bolt protrudes
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CONTROL BO CONTROL BOX & ELECTRICAL COMPONENT X & ELECTRICAL COMPONENT CONTROL BO CONTROL BO CONTROL BOX & ELECTRICAL COMPONENT X & ELECTRICAL COMPONENT X & ELECTRICAL COMPONENT ELECTRICAL COMPONENTS 140 degree adjustable disc. (Left Dist. Blower) Wall Thermostat 170 degree *(2) 140 degree Adjustable Thermo Disk 140 degree limit disc *(1)170 degree Thermo Limit Disk adjustable disc. *(1)Relay Transformer (Right Dist. Blower) (2) Air Distribution Fan (1)Draft, Fan * Control Box Componen
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OPERA OPERATION TION OPERA OPERA OPERATION TION TION 5. Push in bypass damper after fire has progressed. MAINTENANCE 6. Your furnace is capable of putting out many BTU's, Keep chimney and flue pipe clean by cleaning at so don't fully load your furnace until you have be- least twice during a heating season. come familiar with the operation of the furnace. Keep in mind, a full load will not always give you CREOSOTE- FORMATION AND the best results for your needs. Note: With new NEED FOR REMOVAL s
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OPERA OPERATION TION OPERA OPERA OPERATION TION TION of the ashes without disturbing the fire. Stop when BURNING COAL you see a glow in the ashes or the first red coals fall Your furnace is capable of burning both Bituminous into the ash pan. Excessive shaking wastes fuel and and Anthracite coal. Anthracite is perhaps the best can expose the grate(s) to very high temperatures coal fuel because its long even burn time, high heat which can cause warpage or burnout. output, and cleanliness make
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OPERA OPERATION TION OPERA OPERA OPERATION TION TION If, however, there is no flame then the fire needs more The amount of shaking is critical. Too little or too air from the bottom (unless it is near the end of its much of both can result in the extinguishing of a fire burn cycle and needs to be recharged). due to blocked air flow. The proper amount nor- mally occurs when red coals first start to drop through Only when the coal is burned down to half its origi- onto the bed of ashes. nal dept
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SAFETY - OPERA SAFETY - OPERATION TION SAFETY - OPERA SAFETY - OPERA SAFETY - OPERATION TION TION Whenever the loading door is opened, it should be cracked slightly (for about ten (10) seconds) to allow oxygen to enter and burn any combustible gases that are present before fully opening. Failure to do this could result in sudden ignition of the unburned gases when the door is opened. This furnace is equipped with a safety latch system to reduce the rsik of sucjh an ignition. Always wear a glo
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TROUBLE SHOOTING TROUBLE SHOOTING TROUBLE SHOOTING TROUBLE SHOOTING TROUBLE SHOOTING TROUBLE-SHOOTING, PROBLEM SOLVING FOR YOUR FURNACE 1. Problem: Smoke puffs from furnace. Problem: Distribution blower vibrating. 4. Solution: Solution: A. Check chimney draft. Check for blocked chim- A. Tighten Allen Screw on squirrel cage. ney or flue pipe. Use mirror to check chimney B. Check for bad fan bearings. clearance. C. Also oil 3-4 drops of 20w non detergent oil. B. Check ash pit - if too full, empt
