| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of certainly judging that a low-temperature water line and a preheated hot water line are in reverse connection to a mixing regulation valve. <P>SOLUTION: The hot water supply system is equipped with a solar heat utilizing hot water apparatus 10 having a heat accumulating chamber 14 storing a preheated hot water produced by the solar heat and a hot water supplier 20 having the mixing regulation valve 21 through which the preheated hot water sent out from the chamber 14 and the low-temperature water are sent off to a heat-exchanger 25 while they are mixed when necessary, and in case the condition that the low-temperature water temperature Tw sensed by a low-temperature water temperature sensor 28a is 5°C or more higher than the preheated hot water temperature Tp sensed by a preheated hot water temperature sensor 28b continues 10 sec or more during hot water discharge, judgement is passed that the low-temperature water line and the preheated hot water line are in reverse connection with the mixing regulation valve 21, and an error indication is given in the display part of an operating remote controller 30 so as to inform the user of the occurrence of reverse connection. <P>COPYRIGHT: (C)2004,JPO</p> |
