| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the frequency of freezing preventive operations in a water circulation circuit of a floor heating unit. <P>SOLUTION: The floor heating unit includes a water heat exchanger 21, an expansion tank 26, and a heat insulating member 50 for covering those. The heat insulating member 50 includes a water heat exchanger heat-insulating member 61 for covering the water heat exchanger 21, and an expansion tank heat-insulating member 62 for covering the expansion tank 26. A space arranged with the water heat exchanger 21 and the expansion tank 26 is formed in an inside of the heat insulating member 50. When the water heat exchanger 21 and the expansion tank 26 are arranged in the inside of the heat insulating member 50, a space 70 of a part opposed therewith and not provided with the water heat exchanger heat-insulating member 61 and the expansion tank heat-insulating member 62 is provided between the water heat exchanger 21 and the expansion tank 26, in the inside of the heat insulating member 50. <P>COPYRIGHT: (C)2012,JPO&INPIT |
