| 摘要 |
<p>The heat is recuperated from the refractory material of the fireplace by incorporating metal plates in the fireback and hearth. Air is circulated through a duct behind the fireback and under the hearth. The air enters through an upper inlet (M) and flows downward and horizontally to discharge into the room (through the ducts (N)). The fan is controlled by a thermostat (C).</p> |
