Thermostatically Controlled Outside Furnace Burns Old Tires
My thermostatically controlled outside furnace burns old tires, scrap wood, coal and just about anything else. It holds temperatures from 65to 190?, depending on how you set it, and you only have to fire it twice a day. The frame of the furnace is made out of 2-in. steel tubing. It has two 5-ft. long steel tanks mounted horizontally, one above the other, inside the frame. The tanks are "studded" at various intervals all around the outside with 2-in. dia. pipes, 18 in. long with caps over the ends. These pipes hold additional heat. The inside of the frame of the furnace is insulated with 6 in. of fiberglass and 6 in. of sand. The furnace has an 8-in. flu pipe with a damper. The pipe is 8 ft. tall. Fuel is fed into the bottom tank through a door at one end of the furnace. Hot air is pulled off from the dead air surrounding the burning chamber tanks. Operation is controlled by electrical controls with limit switches that automatically shut everything down if anything ever goes wrong. It has a motor to control forced draft. It's very efficient and safe and keeps the mess out of the house. (Gary Baker, Rt. 1, Box 16A, Gilliam, Mo. 65330)
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