50EJ Single-Package Rooftop Electric Cooling Units With Optional Electric Heat

Features/Benefits

Design flexibility: Dedicated vertical supply/return units are ideal for new construction or retrofit to existing installations. The low unit profile is maintained when the unit is installed on the accessory roof curb, which is approved by the National Roofing Contractors Association (NRCA). The roof curb is made watertight by the roofer. The ducts are attached directly to the roof curb to allow all ductwork to be completed before the unit is positioned.

Direct Digital Controls (DDC) -- standard Every unit comes equipped with a microprocessor-based control system. Standard features include:

The Direct Digital Controls are ``cable ready'' to plug into the Carrier Comfort Network (CCN). The CCN is a fully communicating HVAC network which allows the user to fine tune equipment performance, manage energy use, and minimize operating costs.

Quality and reliability: Dual serviceable, semi-hermetic compressors on intertwined evaporator coil ensures excellent full and part load efficiency. Dual refrigerant circuits, both electrically and mechanically independent, provide standby capability should one circuit require service. Reliable Carlyle 06D/E compressors are proven performers.

Factory installed economizer (standard) All units come equipped with an integrated economizer which permits cooling utilizing an outdoor air sensor.