HOT WATER SUPPLY HEATING SYSTEM

To provide a hot water supply heating system capable of simply specifying a bath forward pipe provided in a bathtub.SOLUTION: A hot water supply heating system 2 comprises a second bath forward pipe 621 and a third bath forward pipe 622 connected to a bathtub 50 and passing water to the bathtub 50, and a first bath backward pipe 623 and a second bath backward pipe 624 connected to the bathtub 50 and returning water from the bathtub 50. A controller 70 is configured to execute control of operation of switching water routes to conduct water only through the first bath backward pipe 623 and the second bath backward pipe 624 without conducting water through the second bath forward pipe 621 and the third bath forward pipe 622.SELECTED DRAWING: Figure 20 【課題】浴槽に設即された風呂往き管を簡単に判別することができる給湯暖房システムを提供すること。【解決手段】給湯暖房システム２は、浴槽５０へ接続されて浴槽５０へ水を通す第２の風呂往き管６２１および第３の風呂往き管６２２と、浴槽５０に接続されて浴槽５０から水を戻す第１の風呂戻り管６２３および第２の風呂戻り管６２４と、を備え、制御装置７０は、水の経路を切り替え、第２の風呂往き管６２１および第３の風呂往き管６２２には通水せず第１の風呂戻り管６２３および第２の風呂戻り管６２４のみに通水する動作の制御を実行する。【選択図】図２０