EFC is the newest packaged, direct expansion air conditioner range, with built-in air-cooled condenser for outdoor installation. Indoor air supply is down flow designed to optimize air distribution with tele-communication equipment and reduce racks' core temperature. Low outdoor noise makes it especially suitable for urban installation within telecommunication networks. All safety devices are included and pre - set. Displacement Model EFC units include free cooling as standard device and offer other optional features such as Electric Heating. 40V DC Emergency Cooling, Clogged Filter alarm, fast plug connectors, power supply, alarms, remote display, etc.