| 摘要 |
<p>PURPOSE:To prevent shortage of hot-water amount due to insufficient heat-up and reduce heat dissipating loss due to premature heat-up by a method wherein the decision of conduction of all heat source machine is effected in conjunction with the change of setting value of heat-up temperature. CONSTITUTION:When midnight electric power is conducted, a load contact RL-2 is closed and heat-up is started by a low-capacity exothermal body C. A timer 1 outputs a signal to the load contact Ty about 3hr later and hot-water temperature 36 deg.C is measured. In case the setting of a heat-up hot-water temperature setting volume 4 is about 55 deg.C of low temperature side, the setting of a decision temperature setting volume 5 is about 35 deg.C, therefore, a signal is not outputted from a relay RL3 and heat-up is effected by the exothermal body C only. When the setting of the volume 4 is changed to high temperature side (about 85 deg.C), the setting of the volume 5 becomes high (about 65 deg.C) and the signal is outputted from the relay RL3 after about 3hr whereby the load contact RL-3 is closed and heat-up is effected by all exothermal bodies C, D. When there is remaining hot-water and measured hot-water temperature is a decision value (about 65 deg.C) after 3hr, the signal is not outputted from the relay RL3 and conduction of the exothermal body C only is continued whereby the temperature of hot-water becomes 85 deg.C after 8hr.</p> |
