50EW Single-Package Rooftop Electric Cooling Units With Optional Electric Heat
Features/Benefits
Design flexibility: Dedicated horizontal units are ideal for replacement or applications such as through-the-wall jobs or jobs where sound must be attenuated before the duct penetrates the roof. Ducts connect directly to the unit. Horizontal units may be curb or slab mounted.
Direct Digital Controls (DDC) -- standard: Every unit comes equipped with a microprocessor based control system. Standard features include: heating/cooling operation remote start/stop space temperature offset LED diagnostic capability
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. The direct gear driven, low leakage blades eliminate conventional interblade linkages and the associated adjustments. The economizer operates in conjunction with mechanical cooling when required and is factory installed.
Installation/serviceability: Dedicated horizontal design requires no alteration time to convert in the field. Single point electrical connections are standard on all units. Electrical service access can be made through roof curb or side of unit. High static capability of standard units minimize the need to convert to higher static, oversized motors. The unit is less sensitive to distribution ductwork design. The standard microprocessor controls replace the need for field installed anti-short cycle timers.