Each hot water storage heater shall be equipped with an automatic temperature and pressure relief valve to protect the heater from excessive pressure and excessive temperature.
每个容积式热水器都应该配置一个自动温度压力安全阀，保护热水器不会压力太大和温度过高。
2
Application of OMRON CPM1A series PLC in solar waterheaterautomatic control system is mainly introduced, emphasises on the system hardware constitution and the system software design process.