![]() ![]() ![]() The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/ cold water and/ or steam). The program features include time schedules, setpoints, controllers, logic, timers, trend logs, and alarms. Heating, Ventilation and Air Conditioning) is a control system that applies regulation to a heating and/ or air conditioning system.Ĭentral controllers and most terminal unit controllers are programmable, meaning the direct digital control program code may be customized for the intended use. Use it for drawing HVAC system diagrams, heating, ventilation, air conditioning, refrigeration, automated building control, and environmental control design floor The vector stencil library "HVAC controls" contains contains 24 HVAC control symbols: sensors, actuators, timers, controllers, I/ O points.
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