Comfort At Work Application Area

Carrier’s 48/50 E-Series:
20 to 45 ton Packaged Rooftop Unit

Premium features you can comfortably afford...

Carrier’s 48/50 E-Series rooftops offer an exceptional range of premium features you’d never expect to find in a 20- to 45-ton unit. Exceptional air performance, low-leak gear-drive economizers, variable frequency drives, modulating centrifugal fan, 100% power exhausts, dual independent refrigeration circuits, semi-hermetic compressors, service valves and a sophisticated Direct Digital Control system can be found exclusively on 48/50 E-Series rooftops.

All 48/50 E-Series models feature
dual independent refrigeration circuits
and semi-hermetic compressors with service
valves. If one circuit is shut down, the
other will continue to provide reliable cooling.
...as well as the basics you expect.

The 48/50 E-Series meets or exceeds most standard feature requirements as well, including EERs to 10.4, compliance with ASHRAE 62-89, single-point power entry, pre-painted galvanized steel cabinet, and both constant air volume and variable air volume (VAV) models. All supported by the strongest distributor, dealer and service network in the industry.


Features Benefits
Dedicated down discharge and supply (EJ/EK) and side discharge and supply (EW/EY) models
Flexibility for all types of applications
48/50 EK/EY variable air volume models with variable frequency drives and up to six steps of unloading
Optimum comfort in the most energy-efficient manner
Dual independent refrigeration circuits and semi-hermetic compressors with service valves
Application is never without reliable, redundant cooling
Oversize blowers with motor/drive options that are up to 3.5" static capable
Great for retrofit/replacement applications where additional cooling is required, and situations with long and/or tightly-sized ductwork
Gear-drive low-leak economizers
Reliable, precise control of ventilation air
Optional barometric relief on
constant volume and variable air
volume models
Low-cost over-pressurization relief for buildings with limited return ductwork
Optional 100% power exhaust, using centrifugal blowers, on all constant
volume and variable air volume models
Best over-pressurization relief for buildings with high-static, extended length ductwork
48/50 EJ/EW models can be controlled with an electromechanical thermostat
Simplest, lowest cost unit control
Direct Digital Controls that are fully expandable with plug-in modules and CCN-ready
Control functions can be tailored to meet job requirements at lowest cost. Equipment
performance can be fine-tuned to manage energy use and minimize operating cost
Antimicrobial insulation, sloped condensate pans and easy-access evaporator facilitate equipment cleanliness
All E-Series units meet ASHRAE 62-89 requirements
Rugged, industrial-strength frame and pillar construction with tool-less hinged access doors Maximum cabinet integrity, convenient service and maintenance access

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