Latest Posts. 1  Praise Your Music Heroes Before They Die: The Libertines. 2  MD Plays a Song: Pink Floydâs Goodbye Blue Sky. 3  MD Plays a Song: The Beatlesâ Yesterday. 4  MD Plays a Song: The Smithsâ This Night Has Opened My Eyes. 5  Caught a Ghostâs Debut Album Dropped Today.
A Fan Coil Unit (FCU) is a simple device consisting of a heating and/or cooling heat exchanger or 'coil' and fan. It is part of an HVAC system found in residential, commercial, and industrial buildings. A fan coil unit is a diverse device sometimes using ductwork, and is used to control the temperature in the space where it is installed, or serve multiple spaces.
So to ensure that it's able to get the power it needs consistently, the fan needs to be paired up with an A/C Fan Relay. This device is what your air conditioning system uses to establish control over the flow of electric current coursing through its fan. The moment the A/C system is switched on, this relay permits the proper amount of current to pass through one of its line to activate this device.