![]() ![]() Even more elaborate are the following working HVAC electric parts-Thermostats, Transformers, and Condenser Motors. ![]() When you start from the point of a relay, you can see that a circuit board can be considered an elaborate series of relays. Here are some of the electrical units that can be considered to work similarly to and with relays and will be explained in detail during HVAC training-Compressors, Motors, and Capacitors. We’ve mentioned the important work of relays. Many of the parts of an HVAC unit are considered electrical components. Pressure switch-for example, an amount of pressure turns the relay to closed and power is distributed to the next electric component.Temperature-for example, if too hot, the relay will open and stop power.Voltage-for example, when the relay receives 24 volts, it will close and turn on, distributing power to the next part.Voltage, temperature, and pressure are all common ways that relays use. There are many things that can tell a relay to switch from open to closed. What’s telling the relay to switch from open to closed? Or closed to open? ![]()
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