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How the right rooftop unit controller saves energy and improves effectiveness

Choosing a packaged rooftop unit with an intelligent direct digital control (DDC) unit controller can improve operational effectiveness and energy savings to help businesses enhance their bottom line. By providing diagnostic information that allows technicians to quickly identify and solve problems, the unit controller can enhance overall performance, improve comfort, increase energy savings and reduce labor costs.

Here are a few tips for choosing a smart, user-friendly unit controller to help save money and improve efficiency:

  • Select a factory-mounted unit controller developed specifically for that piece of equipment

    Many generic controllers available on the market today can control a wide variety of equipment types; however, a controller designed to control a specific model of equipment can optimize that unit’s operation. The controller can leverage factory-installed sensors that are placed as the unit is built and can control the unit to operate as specified. Also, the controller is typically tested with the unit before leaving the factory to ensure proper operation and reduce issues in the field.
  • Choose a controller with a user-friendly, intuitive interface

    It’s critical that the controller have an intuitive control interface to ensure proper configuration, installation and troubleshooting of the equipment, regardless of a technician’s level of knowledge or experience. The interface should provide the flexibility to make changes at the controller itself, or by using software when a computer interface is required.
  • Purchase a unit controller that can easily integrate with other systems

    Building owners often want to tie in multiple systems to achieve centralized control, as well as leverage operational costs across those systems. Select a unit controller that is available from the factory using an open, standard protocol such as BACnet or LonTalk® to communicate with a building automation system. Open protocols can be used to monitor and control HVAC, fire and life safety systems, access/security control systems, lighting control systems and maintenance management systems on the same network.
  • Insist on simplified diagnostics and problem solving

    With simple, easily accessible diagnostic information, technicians are able to quickly identify and address problems. The result can be a significant reduction in labor costs and less equipment downtime. Automatic alarms and diagnostics enhance the ability to quickly identify and/or prevent problems and troubleshoot the unit.
  • Look for the ability to connect to the unit controller locally and remotely

    It’s vital to minimize costs while keeping equipment up and running. The ability to remotely connect to the unit controller via computer can help reduce labor expenses and equipment downtime. With remote access capability, many problems can be addressed without having to dispatch a technician to the site. If an on-site visit is necessary, the technician can be familiar with the problem and can come prepared with the appropriate tools and components, which may reduce the number of trips needed and allow technicians to better prioritize their time.

Intelligent controllers available on premium rooftop units from Lennox include a variety of features that significantly reduce troubleshooting time, easily integrate with open protocol networks and enable local and remote access.

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