CONNECTION-TYPE HOT WATER SUPPLY SYSTEM

To provide a connection-type hot water supply system capable of determining blockage of a water inlet filter.SOLUTION: In a connection-type hot water supply system (10) including a plurality of combustion-type hot water supply devices (11-14) arranged in parallel between water supply piping (1) and hot water supply piping (2); and control means (15) for changing the number of hot water supply devices to be operated to adjust a heating capacity according to a use amount of supplied hot water, the hot water supply devices (11-14) each include: passing water amount detection means for detecting a passing water amount of clean water introduced from the water supply piping (1); and a water inlet filter (33) mounted on a clean water introduction portion (29a) from the water supply piping (1). The control means (15) determines blockage of the water inlet filters (33) disposed on each of the hot water supply devices (11-14) by comparing the passing water amounts of the hot water supply devices in operation, when the hot water supply devices (11-14) are simultaneously being operated.SELECTED DRAWING: Figure 5 【課題】入水フィルタの閉塞を判定することができる連結式給湯システムを提供すること。【解決手段】給水配管(1)と給湯配管(2)の間に並列に設置された複数の燃焼式の給湯装置(11～14)と、給湯使用量に応じて加熱能力を調整するために作動させる給湯装置の台数を変更する制御手段(15)を備えた連結式給湯システム(10)において、複数の給湯装置(11～14)は、給水配管(1)から導入される上水の通水量を検知する通水量検知手段と、給水配管(1)からの上水の導入部(29a)に装備された入水フィルタ(33)を夫々有し、制御手段(15)は、複数の給湯装置(11～14)が同時に作動している場合に、作動中の給湯装置の通水量を比較することによって、複数の給湯装置(11～14)に夫々装備されている入水フィルタ(33)の閉塞を判定する。【選択図】図５