| 摘要 |
A fireplace heater has a pair of pluralities of heat exchanger tubes passing air in opposite directions across a fireplace. A first plurality of the heat exchanger tubes passes air from a left blower and duct means to a right duct means which discharges the air on the right side of the fireplace. The other plurality of heat exchanger tubes pass the air from a right blower and duct means to the left duct means which discharges the air on the left side of the fireplace.
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