MECHANICAL & ELECTRICAL WIRING
Empire Controls has been doing electrical installations since the early 70's. We also have three Master Electricians, and an electrical and mechanical engineer at Empire that can help with your electrical and mechanical needs.
When using the Walker Controls System it is important to point out that the software has a very user-friendly environment that can be easily viewed through Internet Explorer. This also allows the client to utilize a facilities existing LAN or network, to be able to view graphics real time whether; hardwired or wireless over the Internet.
The Connect 2004 software is capable of remote off-site multiple connections, and we have the ability to connect through a VPN, through a bridge or even a simple modem.
Empire Controls does a considerable amount of work each year for owners, General contractors, and Mechanical contractors in the field of installation and or service of Electrical and mechanical equipment. Our contracts will range from controls, mechanical wiring, electrical or assistance in design and or service.
AUTOMATION & CONTROL
Building Automation and Control systems save money on utilities while improving tenant comfort. A good system does this by giving you better control of energy spending, and by implementing accepted energy saving strategies. In some cases, there are other automated methods of implementing the strategies, but none are as precise and reliable as a good DDC system.
Direct Digital Controls can provide closer control of temperatures and other controlled variables than conventional controls. The energy otherwise spent on "overshooting" temperature is saved. DDC systems are also ideal for implementing the following strategies:
» Coordinating adjacent systems so that they do not work against each other ie. rad/fan controller.
» Turning off lighting, fans, pumps, boilers and hot water tanks when not really needed.
» Reseting temperature of supply air and hot or chilled water used for heating and cooling to the temperatures actually needed to meet current load.
» Controlling amount of outside air to match actual ventilation requirement, as determined by a Carbon Dioxide sensor.
» Demand limiting, i.e. turning off non essential loads to avoid incurring additional electrical demand charges.
» Coordinating overhead doors with local heating systems, i.e. locking out a unit heater if the adjacent overhead door is open.
» Eliminating thermostat tampering.
» Sequencing of boiler and cooling tower systems.
Additionally, DDC systems have a monitoring capability that is increasingly important as on site operating staff are spread thinner each year. Imagine being able to check the temperatures of occupied space and the status of the systems from three buildings away!
DDC systems usually have alarm points to advise operators when conditions are abnormal. During off hours, the system can use the telephone to notify an off site monitoring service by modem of selected abnormal conditions or "critical alarms". The off site technician can analyze the status of the various system components, and take appropriate action. Imagine the benefits of early warning when "no heat" or "flood" conditions develop during off hours!
As implied by the graphic at the top of the page, direct digital controls are the basic technology used in modern lighting controls, fire, security alarms and card access systems. A DDC system can be an integrated Building Automation System, performing all these functions.
Modern DDC systems are actually made up of multiple controllers, typically one per major mechanical component, networked together by a twisted pair of wires. Each controller is itself a computer, with its own intelligence. We call these systems distributed DDC systems, as the intelligence is distributed to the individual controllers.
Larger Empire systems usually have user interfaces on the network, based on a Windows workstation. These "front ends" allow the user to view floor plans of the buildings and schematics of each system, with the status of each system shown in real time. However, a front end is optional, and smaller systems are at least as well served by a simple and inexpensive keypad interface with Liquid Crystal Display.
The cost of DDC systems, adjusted for inflation, has dropped about 80% during the past fifteen years. Once reserved for monumental office and institutional buildings, digital controls are now cost justified in schools, shopping centers', and stores with multiple rooftop units. Single processor systems can deliver similar, affordable benefits in commercial buildings with single HVAC systems. Somewhat larger systems can deliver energy savings paybacks on the most humble apartment building. Systems of varying sizes are widely used in the industry for building systems and process applications such as cooling towers.
The systems themselves have improved, becoming more reliable, cheaper to install and more user-friendly.