| 摘要 |
In a sealed-combustion furnace an outer casing is provided with a combustion air intake duct and an exhaust flue both communicating through the wall. A removeable carriage assembly is slidably received in the housing. A sheet metal shell is mounted on the carriage for dividing the interior of the casing into two compartments-one for receiving room air for heating and the other providing the heating chamber. A room air blower, a combustion air blower, a combustion chamber and the heat exchanger are all mounted on the carriage and removeable therewith. The combustion air blower receives outside air from the intake duct and forces it into the combustion chamber.
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