| 摘要 |
PURPOSE:To shorten the rising time of the temperature of water, by a method wherein, when the temperature of hot water in a hot water line is low, hot water is circulated from a heat exchanger directly to a floor panel without passage of it through a water tank. CONSTITUTION:A branch pipe 8, branching on the way of a hot water feed pipe 7 running between a heat exchanger 1 and a water tank 2, is connected to the suction side of a circulating pump 5, and a 3-way valve 10, switching a hot water flow passage to the direction of the water tank 2 or the direction of a circulating pump 5 by means of a thermometer 9 for detecting the temperature of hot water in a feed pipe 3, is situated at a connection between the branch pipe 8 and the hot water feed pipe 7. The thermometer 9, located on the way of the feed pipe 3, detects the temperature of hot water in a hot water flow passage, and when the temperature of hot water is low, the 3-way valve 10 is adapted to shut off the flow between a heat exchanger 1 and the water tank 2 against inclusion of hot water in the water tank 2 into the hot water flow passage, and the rising rate of the temperature of hot water in the water flow passage is increased by a value equivalent to the capacity of the water tank 2. |
