Hvac Control Panel Wiring

How to wire an hvac ac unit.

Hvac control panel wiring.

The control panel design is equivalent to nema 4 ip55 with hinged door for easy access ensuring dust and weatherproof construction. The red wire is hot. Internal power and control wiring is neatly routed adequately anchored and all wires identified with cable markers as per standards applicable to hvac industry. Red wire for air conditioner control power hot 1 the r terminal is the 24 volt hot feed from the control step down transformer.

In this configuration the blue wire acts as the return wire between the 24v transformer in the heating cooling system control panel and the thermostat. Usually the electrical wiring diagram of any hvac equipment can be acquired from the manufacturer of this equipment who provides the electrical wiring diagram in the user s manual see fig 1 or sometimes on the equipment itself see fig 2. Always refer to your thermostat or equipment installation guides to verify proper wiring. It reveals the components of the circuit as simplified shapes and also the power and also signal connections between the gadgets.

A wiring diagram is a simplified conventional photographic depiction of an electrical circuit. Hvac control heat pump systems air conditioner thermostat wiring details and color code r terminal is connected to the red wire or r wire this is 24 volt power for the thermostat and controlled devices. Air conditioning ac contactor control board 1 this diagram is to be used as reference for the low voltage control wiring of your heating and ac system. Note some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire.

It has varied applications in many industry sectors being used for wiring electrical cabinets. Origin is the control transformer and then the r terminal. The panel wire is flexible with a single core and one layer of heat resistant pvc insulation. In standard thermostat wiring the blue wire connects to the common terminal on the thermostat making it the c wire.

That will power the relay contactor or complete the circuit in the circuit board. My paperback and e book.