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50LC WEATHEREXPERT®

Single-Package Rooftop
Ultra-High Efficiency
Electric Cooling Units
with Optional electric Heat
3 to 5 Nominal Tons
 		48/50LC Unit Icon

50LC WEATHEREXPERT™ rooftop units were designed by customers for customers. They are Carrier’s most efficient commercial packaged rooftop ever produced. The multi stage cooling compressor with Carrier’s Staged Air Volume (SAV™) system allows for added comfort, energy savings and humidity control. With the use of ComfortLink controls and the belt drive variable frequency drive fan system, the unit is ideal for single zone variable air volume capability. Units are pre-wired and pre-charged with environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes.
Performance Features
  • Puron® (R-410A) HFC refrigerant
  • Exceeds ASHRAE 90.1 and Energy Star efficiency levels
  • Meets or exceeds Consortium for Energy Efficiency (CEE) efficiency levels
  • Two-stage cooling capacity scroll compressor
  • SEERs up to 17.5 with direct drive ECM indoor fan system
  • SEERs up to 16.4 with belt drive/VFD indoor fan system
  • Outdoor sound levels as low as 76 dBs
  • Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
  • Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
  • TXV refrigerant metering device on each circuit with removable power element
  • Fully insulated cabinet
  • Enhanced copper tube and aluminum fin designed condenser and evaporator coils. Special coated coils also available
  • Standard cooling operating range up to 125 °F (52°C) and down to 10°F (-12°C).
  • Cooling operation down to 0°F (-18°C) with ComfortLink controls
  • Rated in accordance with ARI Standards 210/240
  • Designed in accordance with Underwriters’ Laboratories Standard 1995
  • Listed by UL and UL, Canada
Maintenance Features
  • Access panels with easy grip handles
  • Innovative , easy starting, no-strip screw feature on unit access panels
  • Two-inch disposable return air filters
  • Tool-less filter access door
  • Optional hinged access panels also available
  • Belt drive evaporator-fan motor and pulley combinations with VFD system
  • ECM direct drive (multi-speed and torque) indoor fan motor system
  • New terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
Installation Features
  • Field convertible from vertical to horizontal airflow for slab mounting without any special kits
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point electric connections
  • Full perimeter base rail with built-in rigging adapters and fork truck slots
Reliability Features
  • Scroll compressors with internal line-break overload protection
  • 24-volt control circuit protected with resettable circuit breaker
  • Permanently lubricated evaporator-fan motor
  • Totally enclosed condenser motors with permanently lubricated bearings
  • Low pressure and high-pressure switch protection
  • Liquid line filter drier as standard
Standard Limited Warranty
  • 5 years parts only electric heater
  • 5 years parts only compressor
  • 3 years parts only on ComfortLink controls
  • One year parts only on all other parts
  • Extended warranty packages available
Options/Accessories
Category Item Factory Installed
Option		 Field Installed
Accessory
Cabinet Thru -the-base electrical or gas-line connections Y Y
Hinged access panels Y  
Foil faced insulation throughout cabinet Y  
Coil Options Cu/Cu indoor and/or outdoor coils Y  
Pre-coated outdoor coils Y
E-coated outdoor coils Y  
Condenser Protection Condenser coil hail guard (louvered design) Y Y
Controls Thermostats, temperature sensors, and subbases   Y
RTU-OPEN™ open-protocol controller Y Y
ComfortLink controls with scrolling marquee Y  
Smoke detector (supply and/or return air) Y Y
Economizers & Outdoor Air Dampers EconoMi$er X (for electro-mechanical controlled RTUs) Y Y
EconoMi$er2 (for DDC controlled RTUs) Y Y
Motorized 2 position outdoor-air damper Y Y
Barometric relief1 Y Y
Power exhaust   Y
Economizer Sensors & IAQ Devices Single dry bulb temperature sensors2 Y Y
Differential dry bulb temperature sensors2   Y
Single enthalpy sensors2 Y Y
Differential enthalpy sensors2   Y
CO2 sensor (wall, duct, or unit mounted)2 Y Y
Electric Heating Multiple electric kW heating sizes Y Y
Single point kits Y Y
Indoor Motor & Drive Direct drive ECM indoor motor Y  
Belt drive motor with VFD system Y  
Low Ambient Control ComfortLink provides cooling operation down to 0°F (-18°C) Y  
Standard unit operates down to 10°F (-12°C) Y  
Power Options Convenience outlet (powered) Y  
Convenience outlet (unpowered) Y  
Non-fused disconnect Y  
HACR circuit breaker Y  
Roof Curbs Roof curb 14" (356mm)   Y
Roof curb 24" (610mm)   Y

Refer to Product Data for further information.

Notes:

1. Included with economizer.
2. Sensors for optimizing economizer.
WeatherExpert


Puron evironmentally sound refrigerantashrae90.1Energy star
AHRI standard 210/240 unitary small ac
C-UL-USQuality Assurance
Certified to ISO 9001

Additional Information
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