CIT Relays and Switches for HVAC Equipment

This technical report details the roles of relays and switches in Heating, Ventilation, and Air Conditioning (HVAC) equipment. It outlines how these components are essential for controlling various functions within HVAC systems, including temperature regulation, airflow management, and humidity control. The report explains the specific functions of relays, such as compressor control, fan operation, and safety mechanisms like overload protection and phase monitoring. It also describes how relays facilitate automation through sequencing and timer functions. Additionally, the report discusses the role of switches, including thermostats, limit switches, and manual controls, which allow users to manage HVAC operations effectively. The integration of relays and switches with modern systems, such as Building Management Systems and smart thermostats, is also presented, highlighting their contribution to energy efficiency and system performance. Overall, the report emphasizes the importance of these components in ensuring the safe and reliable operation of HVAC systems.