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WeatherMaker® Standard Efficiency Single-Packaged Rooftop Units
50KC

Electric Cooling Units with Optional Electric Heat

3 to 5 Nominal Tons

50KC WeatherMaker® rooftop units were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, “no-strip screw” collars, and handled access panels, we’ve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with Puron® (R-410A) refrigerant at the factory. The units are factory tested in cooling mode.


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Performance Features

  • ASHRAE 90.1 compliant
  • Single-stage cooling capacity control
  • Up to 14.1 SEER and 12.0 EER
  • Cooling operating range up to 115 °F (46°C) and down to 25°F (-4°C) using winter start kit
  • Innovative 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

Maintenance Features

  • Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
  • Access panels with easy grip handles
  • Innovative, easy starting, no-strip screw feature on unit access panels
  • Tool-less filter access door
  • Optional hinged access panels also available
  • Direct Drive – ECM indoor fan motor standard with optional belt drive systems available
  • Two-inch disposable return air filters

Installation Features

  • Same footprint as installed Carrier 3-5 ton rooftops back to 1989, reducing installation costs and time
  • Field convertible from vertical to horizontal airflow configuration
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point gas, electric, and controls 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
  • One year parts only on all other parts
  • Additional extended warranty packages available
  Factory-Installed Field-Installed
Cabinet
Thru the base electrical or gas line connections X X
Hinged access panels X  
Coil Options
Cu/Cu indoor and/or outdoor coils X  
Pre-coated outdoor coils X  
Premium, e-coated outdoor coils X  
Humidity Control
Humidi-MiZer adaptive dehumidification system (3-phase models only) X
Condenser Protection
Condenser coil hail guard (louvered design) X X
Controls
Thermostats, temperature sensors and subbases   X
PremierLink DDC communicating controller X X
RTU Open multi-protocol controller X X
Smoke detector (supply and/or return air) X  
Time Guard II compressor delay control circuit   X
Filter status switch   X
Fan status switch   X
Economizers & Outdoor Air Dampers
EconoMi$er IV (for electro-mechanical controlled RTUs) X X
EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD) X X
EconoMi$er 2 (for DDC controlled RTUs) X X
Ultra-low leak economizer dampers X X
Motorized 2-position outdoor air damper X X
Manual outdoor dir damper   X
Barometric relief X X
Power exhaust   X
Economizer Sensors & IAQ Devices
Single dry bulb temperature sensors X X
Differential dry bulb temperature sensors   X
Single enthalpy sensors X X
Differential enthalpy sensors   X
CO2 sensor (wall, duct, or unit mounted) X X
Electric Heat
Multiple electric resistance heater kW sizes   X
Single point kit   X
Indoor Motor & Drive
Multiple motor and drive packages X  
Low Ambient Control
Winter start kit   X
Motormaster head pressure controller   X
Power Options
Convenience outlet (powered) X  
Convenience outlet (unpowered) X  
Non-fused disconnect X  
Roof Curbs
Roof curb 14" (356mm)   X
Roof curb 24" (610mm)   X
Nominal Cooling Ton Size Cooling Stages AHRI Efficiency (SEER) EER Dimensions (in) LxWxH Electric Heat Nominal kW Range Approx. Unit Weight (lbs)
3 1 (14.0) 74x47x33 4.0 to 20.0 445
4 1 (14.0) 74x47x33 4.0 to 20.0 499
5 1 (14.1) 74x47x41 5.0 to 25.0 552

Performance Features

  • ASHRAE 90.1 compliant
  • Single-stage cooling capacity control
  • Up to 14.1 SEER and 12.0 EER
  • Cooling operating range up to 115 °F (46°C) and down to 25°F (-4°C) using winter start kit
  • Innovative 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

Maintenance Features

  • Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
  • Access panels with easy grip handles
  • Innovative, easy starting, no-strip screw feature on unit access panels
  • Tool-less filter access door
  • Optional hinged access panels also available
  • Direct Drive – ECM indoor fan motor standard with optional belt drive systems available
  • Two-inch disposable return air filters

Installation Features

  • Same footprint as installed Carrier 3-5 ton rooftops back to 1989, reducing installation costs and time
  • Field convertible from vertical to horizontal airflow configuration
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point gas, electric, and controls 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
  • One year parts only on all other parts
  • Additional extended warranty packages available
  Factory-Installed Field-Installed
Cabinet
Thru the base electrical or gas line connections X X
Hinged access panels X  
Coil Options
Cu/Cu indoor and/or outdoor coils X  
Pre-coated outdoor coils X  
Premium, e-coated outdoor coils X  
Humidity Control
Humidi-MiZer adaptive dehumidification system (3-phase models only) X
Condenser Protection
Condenser coil hail guard (louvered design) X X
Controls
Thermostats, temperature sensors and subbases   X
PremierLink DDC communicating controller X X
RTU Open multi-protocol controller X X
Smoke detector (supply and/or return air) X  
Time Guard II compressor delay control circuit   X
Filter status switch   X
Fan status switch   X
Economizers & Outdoor Air Dampers
EconoMi$er IV (for electro-mechanical controlled RTUs) X X
EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD) X X
EconoMi$er 2 (for DDC controlled RTUs) X X
Ultra-low leak economizer dampers X X
Motorized 2-position outdoor air damper X X
Manual outdoor dir damper   X
Barometric relief X X
Power exhaust   X
Economizer Sensors & IAQ Devices
Single dry bulb temperature sensors X X
Differential dry bulb temperature sensors   X
Single enthalpy sensors X X
Differential enthalpy sensors   X
CO2 sensor (wall, duct, or unit mounted) X X
Electric Heat
Multiple electric resistance heater kW sizes   X
Single point kit   X
Indoor Motor & Drive
Multiple motor and drive packages X  
Low Ambient Control
Winter start kit   X
Motormaster head pressure controller   X
Power Options
Convenience outlet (powered) X  
Convenience outlet (unpowered) X  
Non-fused disconnect X  
Roof Curbs
Roof curb 14" (356mm)   X
Roof curb 24" (610mm)   X
Nominal Cooling Ton Size Cooling Stages AHRI Efficiency (SEER) EER Dimensions (in) LxWxH Electric Heat Nominal kW Range Approx. Unit Weight (lbs)
3 1 (14.0) 74x47x33 4.0 to 20.0 445
4 1 (14.0) 74x47x33 4.0 to 20.0 499
5 1 (14.1) 74x47x41 5.0 to 25.0 552

California residents please see Proposition 65

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Expert Training @ Carrier University: Troubleshooting Single Zone Rooftops