

Once an HVAC technician knows the electrical components, the sequencing of operations of the unit, and wiring of the HVAC unit, they can attempt to repair the HVAC air conditioning. Even more elaborate are the following working HVAC electric parts-Thermostats, Transformers, and Condenser Motors.
#Hvac electrical basics pdf series
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.

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?
