Hvac Potential Relay Wiring

Their function is to assist in starting the electric motor.

Hvac potential relay wiring. If not the structure won t function as it should be. A wiring diagram is a simplified standard photographic depiction of an electrical circuit. Explaining the differences between current relays and potential relays and their role in starting compressors. Tomczyk will cover potential relay rating specifications and troubleshooting.

Tomczyk is a professor of hvacr at ferris state university big rapids mi and the author of troubleshooting and servicing modern air conditioning refrigeration systems published by esco press. Mars hvac potential relays mars series relays are manufactured for the hvac industry. Even though the coil is unmarked on most 90 340 relays you can find it easily by locating the terminals with the small strands of wire connected. I show the.

Variety of hvac fan relay wiring diagram. View profile view forum posts view forum threads regular guest join date may 2014 posts 17 post likes my. This pickup voltage is potential voltage that exists in the start winding when a motor gets above about 75 running speed and it is generated in the start winding by the motor itself not the capacitor. They have two different ways to wire a potential relay.

To order call 800 726 9696. It is important when connecting a relay to distinguish which two relay points connect the coil. Potential relays are sometimes referred to as voltage relays because they rely on the back electromotive force bemf or voltage which is generated by the motor for their operation. Potential relay wiring diagram compressor potential relay wiring diagram copeland potential relay wiring diagram mars potential relay wiring diagram every electrical arrangement consists of various distinct components.

50 60 hz culus contact rating 35 amp 400 vac operating position tab up instructions and wiring diagram included in each relay class b insulation c o m p. Potential relays are commonly found on many smaller single phase capacitor start capacitor run motors in the hvacr industry. The potential relay is normally closed and it opens when a sufficient pickup voltage is present between the 5 and 2 terminals on the relay. It reveals the parts of the circuit as streamlined shapes and the power as well as signal connections between the devices.

Each part should be set and connected with different parts in particular way.