Direct Digital Control DDC, Is an automatic control by a computer of procedure or a state. Through the use of sensors and actuators, a computer program can provide controllability of those methods by receiving and sending information to and from. Information is provided via a Graphic User Interface for the end user. Computer programs are designed to deal with these kinds of operations. A controls contractor can provide and install hardware, write the programming and incorporate it based on its own controllability that is allowable. Lighting systems and building air conditioning are often candidates for controllers. Controls are in charge of opening dampers to offer outside and return air for ventilation purposes, regulating hot water and cold water valves to regulate the temperature across cooling and heating coils, turning the fan ON or OFF for direct and variable air flow. Controls take temperature readings at different positions on humidity and Carbon Dioxide levels in addition to the equipment.

Lighting systems can be Controlled by providing occupancy detectors in occupant spaces which allow for the lights to be turned on and off based on whether a space is occupied or not. With a minimal amount of control of cooling and heating systems a construction can conserve frequently in the kind of cost savings, and energy. Among the basic and very best methods is scheduling. This technique of controllability enables an end user to provide a schedule of unoccupied and occupied times to function. During times that are busy, the programming could call the components to operate, and during times they’d be called to disable. This is an simple and excellent way to conserve energy during hours when there is a building not in use. Owners opted to provide controls for the air conditioning systems to allow for flow control. This entails programming instrumentation and committed personnel. In addition to the scheduling building operators may implement control of operations of ac equipment.

One such operation is the Amount. A good engineer will compute adjustments based on building code requirements both local and national. By way of example, once the construction reaches a minimum occupancy the device dampers, which allow for the infiltration of outside air through the device, can be controlled by the Building Automated System BAS to close an amount which will enable the unit to keep on supplying the necessary outside air but decrease the quantity of untreated air that enters the building. This assists the device in reducing energy costs, thus requiring less of the unit engine and maintaining a consistent temperature and humidity provided to the construction. Regions of controllability include carbon dioxide levels, humidity, temperature and pressure. There are lots of ways that electronic controls can be employed to decrease a building’s energy consumption. The variability in the amount of control and variety of programming and apparatus provide operators and building owners that the latitude to pick a system that is not only effective but also cost effective.