A damper 92, which may be manually or thermostatically controlled, controls cool air flow from room floor level into the air chamber (48) and then through openings (94, 96) into combustion chamber (34) wherein the air is heated. An air chamber (48) is formed within the housing (12) in air flow communication with the combustion chamber (34) for feeding air thereto through openings (94, 96) in the air chamber walls (46, 90). A firebrick lined combustion chamber (34) within the housing receives logs through opening (50) for burning and the production of hot more » combustion gases. A latching mechanism (60) on the door (54, 56) engages with undercut flange means (52, 53) surrounding opening (50) for positively maintaining the door (54, 56) in the closed position. « lessĪn air tight wood burning stove (10) for heating a designated space comprises a housing (12) having an access opening (50) in the front wall (14) thereof and at least one glass panel (64) containing door (54, 56) hingedly mounted on the front wall for closing the opening (50). The furnace construction separates entirely, or almost entirely, the thermostat from any air being heated during flow through the interconnected spaces so that the thermal energy sensed by the thermostat is entirely or primarily radiant energy from the front wall of the cabinet or the door between the thermostat and the fire chamber. The front wall of the cabinet or the door, when there is one door, separates the thermostat from the fire chamber within the cabinet above the grate.
the thermostat is mounted for movement to open the damper. Both are mounted on the front of the furnace. A damper, more » having a pipe and plate pivotally mounted on the top of the pipe at its front end, is connected to a bimetallic thermostat above it. The front wall has at least one opening closed in an airtight manner by one or two doors. A grate and an ash pan below are mounted within a lower portion of the cabinet. There are aligned flue openings in the upper portion of one of the sets of spaced walls. One of two outer walls has an inlet and outlet for flow of air to be heated. The furnace for burning wood or coal has a cabinet with a front wall and interconnected spaces between the inner and outer walls at the sides, top, bottom and rear.
This increased combustion rate is unaffected by the opening of the fuel loading door, and the flames, smoke and other products of combustion are not blown back through the fuel loading door when it is = , The additional air supplied via this air inlet increases the rate of combustion prior to the opening of the fuel loading door. When the outer cabinet door is opened to gain access to the fuel loading door, the pan member on the cabinet door is moved away from the air inlet to the combustion chamber thereby allowing additional air to enter the combustion chamber via the air inlet to the combustion chamber. A thermostatic damper controls the rate of combustion in the combustion chamber by restricting the quantity of air supplied via other air intakes. When the stove is burning during normal operation the fuel loading door is closed and an air inlet to the combustion chamber is blocked by a pan member of the outer cabinet door.
This factory-packaged boiler is equipped with many features, such as a spark (intermittent) pilot system, cast-iron sections, and an insulated heavy-gauge steel jacket. The GSA is also designed with a generous heating surface and an automatic vent damper to maintain that efficiency. The highly efficient GSA-250-N-IP pumps out 250,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 83.0 percent. "Uncover warm possibilities" with Williamson-Thermoflo's GSA gas fired steam boiler.
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