| http://www.w3.org/ns/prov#value | - The system comprises a fireplace including a firebox, an exhaust gas flue connected to the firebox for exhausting gas from the firebox to the outdoor ambient, a motor-driven draft inducer connected to the exhaust gas flue for forcing exhaust gas flow out to the outdoor ambient, a channel for conveying outdoor ambient air into the building interior, and a motor-driven blower within the channel for
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