Individual space temperature control is then maintained by adjusting the volume flow rate (usually through variable air volume, or VAV, boxes) or its supply temperature in accordance with the space's cooling and heating demands. Imagine opening an electrical distribution box only to find water droplets clinging to your expensive components like dew on morning grass. Whether it's an outdoor enclosure weathering. Choosing the right heating approach for your facility starts with understanding the building's needs, how air moves through the space, and the importance of indoor air quality—not just temperature. The impact of your choice has a real human cost. Why is temperature control so crucial for the system? Many experienced technicians know that heat in a distribution cabinet has. The objective of an HVAC (heating, ventilating, and air-conditioning) system is to control the temperature, humidity, air movement, and air cleanliness, normally with mechanical means, to achieve thermal comfort. You'll learn how each component connects — from the differential pressure tubing and room sensor to the heatin. CL-1 to CL-4 Installing, starting up, and servicing this equipment can be hazardous due to system.