HVAC Control and Optimization
The E2A system has the ability to add sophisticated control functionality to commercial buildings that may normally lie outside the range of standard BMS/BAS systems. Easily installed, without any serious impact to the existing building structure or electrical wiring, the system brings a degree of functionality to bear that will reduce utility bills by eliminating non-essential run-times, controlling HVAC units based on more accurate building and environmental data than can be attained from standard thermostats and managing demand so that there are no unnecessary demand increases based on coincidental start-times or outside influences.

The E2A system offers automated centralized supervisory control through of a number of wirelessly distributed control interfaces, sensors and a master controller.

Totally Wireless Automated Solution
The system hardware consists of combinations of three separate pieces of hardware which connect together through a wireless mesh network. The system generally deploys with one Master Control Unit (MCU) being installed at each location. One "TH" Zone Sensor and one HVAC Unit Controller (MC2) are installed for each of the HVAC zones to be controlled. The master controller has the ability to manage up to 256 zones.

All systems connect to a web based SCADA server which allows the system to be managed, monitored and reported from using a standard web browser from any internet location.

Hardware device functionality is described below:

Master Control Unit (MCU)
The MCU is a microprocessor-based controller. The device hosts a development environment which allows the execution of customized E2A applications. These applications allow the device to maintain complete control of all other controller connections, data handling and event based actions at each location. It also manages the data transfer between the local controllers and the online SCADA server.

Control Peak Demand
The E2A Demand Control process is unique in that it constantly derives feedback relating to the impact on operating performance and zone environmental condition and refines its operating procedures to ensure minimum impact as a result of controlling demand.

Reduce Electrical Consumption
The E2A Zone Level Control modules use the Proportional Integral (PI) control method. This method is proven to be more responsive and energy efficient than using standard "Two Step" control methods which use hysteresis values and dead-bands for set-point control. Generally these methods lead to target overshoots, delayed reaction and increased energy consumption.

Real-Time Reporting
Energy Control Center
The E2A Web SCADA Interface (also called the "Efficient Energy Control Center") is accessible through a Username and Password from any Internet-connected Web Browser at www.e2energysavings.com.

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