In the hot water system a high water tank with solenoid valve controlled water feeder is used to replace the secondary circulating pump.
热水系统中，采用电磁阀根据水箱液位进行补水，省去二次循环泵。
In the hot water system a high water tank with solenoid valve controlled water feeder is used to replace the secondary circulating pump.
热水系统中，采用电磁阀根据水箱液位进行补水，省去二次循环泵。
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