The L1020 2020 EPA-Certified Furnace has been engineered to accommodate the heating requirements of the average sized home, even during winter’s coldest months. It is constructed with high grade, heavy gauge steel and is continuously welded to assure the highest structural strength. In addition, the firebox is lined with insulated stainless steel panels to ensure many years of energy efficient service. The design of the secondary combustion chamber increases fuel efficiency by creating a “secondary burn” of smoke and wood gases before they are vented up the chimney. The cast iron doors are custom fitted to provide an airtight seal, greatly extending the burn time and ensuring maximum efficiency in fuel consumption. The heavy-gage cast iron grate allows for convenient ash removal and reduced maintenance. For total comfort and convenience, a thermostatically-controlled Draft Blower and fan-limit-controlled Circulation Blower are included. These fully automatic components provide heat disbursement throughout your home, minimizing recovery time when the wall thermostat demands heat. All of these features are standard, offering you the most efficient, durable, and affordable indoor wood burning furnace. Efficiency was determined using the higher heating value of the fuel per B415.1-10 testing requirements. Dry seasoned wood will develop greater BTU output. A well-insulated dwelling will always lead to better results and overall improved fuel usage efficiency. Your L1020 f urnace is designed to be either a supplemental or central heating source for your home. This wood burning furnace may be installed in parallel with a properly operating electric, gas or oil-fired central furnace, listed or certified in accordance with a nationally recognized safety standard, and within clearances specified on the nameplate. When in a parallel installation, the static pressure of the central furnace plenum may not exceed 0.15 water column inches, and the maximum setting on the central furnace limit switch is 182°F. With the L1020 f urnace in an “Interconnection Arrangement,” your furnace should be upstream of the central furnace. The L1020 f urnace warm air supply should never be connected to return air for the central furnace. A qualified installer should perform the installation. IMPORTANT: FOR TECHNICAL SUPPORT OR CUSTOMER SERVICE ISSUES, DO NOT RETURN TO THE STORE OR TO THE DEALER. CALL 1-800-875-4788. Forced Hot Air Circulation: The plenum size of your L1020 f urnace must not be reduced to less than 100 square inches, and must provide a minimum of 18 inches between the top of your L1020 f urnace and the main trunk connection. Do not modify the outer shell of the furnace at any time. The plenum attached to the furnace must be constructed of metal. The warm air supply duct system should be constructed of materials with a minimum temperature rating of 250°F. Clearances: Unit must be placed on a non-combustible floor. This floor must extend at least 16 inches in front of, and 8 inches on either side of, the fuel loading and ash removal doors; underneath the chimney connector; and 2 inches on either side of the chimney connector. The furnace must maintain the following clearances to combustibles:
• Heat plenum = 2 inches • Chimney connector = 18 inches
• Front = 48 inches • Rear = 12 inches • Sides = 6 inches • Main furnace = 12 inches These are minimum clearances and should be strictly followed. In the case of a power outage, a dangerous level of heat accumulation may develop. Do not store fuel or other combustible materials within installation clearances.
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