冷水远传压力表7和热水远传压力表，分别检测自来水端和燃气锅炉热水端的水压，并把检测到的信号转变成电信号送到控制器，在控制器内通过比较这两路信号高低，产生一个压差信号输出到变频器，变频器控制增压泵的运行速度，使热水压力随时跟踪自来水压力，使两者一直保持平衡。另外，当房间的热水长时间不用时，管道内的水温必然降低，为此在热水系统中加装了一个循环泵，使热水一直保持循环状态，这样无论何时都可以实现恒温供

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热水。