WeatherExpert™ High-Efficiency Single-Packaged Rooftop Units 50N Electric Cooling Units with Puron® (R-410A) Refrigerant 75 to 150 Nominal Tons
Commercial HVAC SYSTEM Malaysia Carrier HVAC System Malaysia Outdoor HVAC System Malaysia Carrier Cooling Units Malaysia High-Efficiency Single-Packaged Rooftop Units 50N Electric Cooling Units Malaysia
Electric Cooling Units with Puron® (R-410A) Refrigerant
75 to 150 Nominal Tons
50N2 – Vert Supply/Return CV/SAV
50N3 – Vert Supply/Return VAV
50N4 – Horz Supply/Return CV/SAV
50N5 – Horz Supply/Return VAV
50N6 – Vert Supply/Return CV/SAV
50N7 – Vert Supply/Horz Return VAV
50N8 – Horz Supply/Vert Return CV/SAV
50N9 – Horz Supply/Vert Return VAV
Carrier N Series rooftop units are pre-wired and factory-tested in both cooling and heating modes. All 50N models feature a double wall foam panel cabinet design with hinged man-sized access panels. Units are available in constant volume (CV), staged air volume (SAV), or variable air volume (VAV) applications with a wide variety of electric or hydronic heating options. Units come with the ComfortLink™ DDC (direct digital control) communicating control system and hermetic scroll compressors on dual independent refrigeration circuits, controlled via Electronic Expansion Valves (EXV).
Performance Features
- High-capacity and high-efficiency models available, meeting or exceeding EER requirements of AHSRAE Standard 90.1
- Multiple high-efficiency scroll compressors include a crankcase heater and spring isolation, providing up to 8 steps of cooling capacity control with intertwined evaporator coils for full-face active operation at part-load conditions
- Cooling operating range from 32 to 115F ambient on a standard model, down to -20F with MotorMaster® V control, and up to 125F on high efficiency models
- Double wall foam panel construction
- ComfortLink™ control includes: easy to use scrolling marquee display, service diagnostics, run test capabilities, demand limit capability, compressor reverse rotation protection, and BACnet communication option.
- California Energy Commission Title 24 Compliant
Reliability Features
- Dual electrically and mechanically independent refrigerant circuits, with coil frost protection, liquid line filter driers, crankcase heaters, and Electronic Expansion Valves (EXV) standard on all models.
- Compressor protection includes high and low pressure transducers with safety cutouts on compressor
- Circuit breaker protection for all power components
- Cabinet made of pre-painted, galvanized steel with baked enamel finish, which meets ASTM B117 salt spray resistance test
- Robust electric resistance heaters are factory installed nichrome element type, insulated with ceramic bushings, and include operating and safety controls
- Tested in accordance with UL Standard 1995 and listed by ETL and ETL, Canada
Maintenance Features
- Large hinged service access doors
- On-board diagnostics include refrigerant pressure sensors
- Auto component testing simplifies troubleshooting
- Standard Double wall construction
Installation Features
- Shipped with R-410A refrigerant charge
- Single point electrical service entry, through unit bottom or side
- Lifting lugs
Factory-Installed Options
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Electric heat options include:
- Low heat
- Medium heat
- High heat
- SCR electric heat control
- Hydronic heat
- Extended chassis tracks for auxiliary coil
- 4’ or 8’ blank sections
- 4-in. pleated filters
- Bag or cartridge filters with pre-filters
- Final filters
- Field Use Filter Section
- Various airflow measuring station combinations
- UV-C lamps
- Barometric relief
- Modulating integrated economizer damper
- Modulating power exhaust with VFD and building pressure sensor
- Return fan with VFD and supply fan tracking
- High static fan options, supply, exhaust and return
- Alternate high-capacity evaporator coil
-
Condenser and evaporator options include:
- All-aluminum Novation condenser and Al/Cu evaporator
- E-coat all-aluminum Novation condenser and Al/Cu evaporator
- Hot gas bypass
- Controls input expansion board
- Totally enclosed fan cooled (TEFC) or Outdoor Drip Proof (ODP) fan motors
- Bypass on fan motor VFDs
- GFI (ground fault interrupter) convenience outlet (powered)
- Marine lights
- Non-fused disconnect
- Agion interior coating
- Low outdoor sound
- Low ambient control
- 65 kA SCCR (460V) or 25 kA SCCR (575V)
- Digital compressor
- BACnet communication
- Replaceable core filter drier and service valves
- Security grilles or louvers for condenser section
- Humidi-MiZer™ adaptive dehumidification system
Field-Installed Accessories
- Mixed air and final filter kits
- CO2 space sensor
- Outdoor or return humidity sensor (enthalpy)
- Field use control box
- Controls input expansion board
- Navigator™ display
- Return air CO2 sensor
- Smoke detector
- Filter switch
-
Fan status switch
- T55 Temperature Sensor
- T56 Temperature Sensor
- Space temperature sensor with CO2 override
- Space temperature sensor set point and CO2 override
- MODBUS Carrier translator
- LonWorks Carrier translator
- BACnet Communication module
- System Pilot™ interface
- Touch Pilot™ interface
- 14-in. roof curb
- Motormaster V control
- Compressor sound blankets
