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The thermal actuator is mainly responsible for executing the switch command transmitted by the thermostat in the floor heating system. For the normally closed thermal actuator, when the heating is turned on, the thermostat detects that the room temperature is lower than the set temperature, and the thermal actuator starts to work. The branch valve of the water heater is opened, and hot water enters the heating circuit to heat the room. When the room temperature reaches the set temperature, the thermal actuator stops working, and the branch valve of the manifold is closed, cutting off the hot water entering the heating circuit, and the room temperature gradually cools down to reach When the start-stop temperature difference set by the thermostat is opened, the water diversion valve is opened again, and the cycle repeats. According to the closing form of the valve, the thermal actuator can be divided into two types, one is the shut-off type, and the other is the stroke type.
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