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WeatherMaker® Standard-Efficiency Single-Packaged Rooftop Units
48KC

Gas Heating/Electric Cooling Units

3 to 5 Nominal Tons

48KC 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 both heating and cooling modes.


carrier-AHRI-210-240-Unitary-Small-AC

Performance Features

  • ASHRAE 90.1 compliant
  • Single-stage cooling capacity control
  • Up to 14.1 SEER and 12.0 EER
  • Gas efficiencies up to 82%
  • 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
  • Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and energy saving indoor fan motor delay
  • 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
  • Exclusive IGC anti-cycle protection for gas heat operation
  • Solid-state electronic direct spark ignition system and flame roll-out safety protector

Standard Limited Warranty

  • 10 years parts only heat exchanger - aluminized
  • 15 years parts only heat exchanger - stainless steel
  • 5 years parts only compressor
  • One year parts only on all other parts
  • Additional extended warranty packages available

For California Residents - 3-5 Ton G/E Models Only

For installation in SCAQMD only: This furnace does not meet the SCAQMD Rule 1111 14 ng/J NOx emission limit, and thus is subject to a mitigation fee of up to $450. This furnace is not eligible for the Clean Air Furnace Rebate Program: www.CleanAirFurnaceRebate.com.

  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
Gas Heat
Liquid propane (LP) conversion kit   X
High altitude conversion 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 Low Gas Heating Input (MBtuh) Medium Gas Heating Input (MBtuh) High Gas Heating Input (MBtuh) Approx. Unit Weight (lbs)
3 1 (14.0) 74x47x33 72 115 - 490
4 1 (14.0) 74x47x33 72 115 150 544
5 1 (14.1) 74x47x41 72 115 150 597

AHRI = Air-Conditioning, Heating & Refrigeration Institute
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
EER = Energy Efficiency Ratio
SEER = Seasonal Energy Efficiency Ratio

NOTES
1. Rated and certified under ARI Standard 210/240.
2. Ratings are based on:
» Cooling Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 95°F (35°C) db outdoor air temp.
» IPLV Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 80°F (27°C) db outdoor air temp.
3. All 48KC units comply with ASHRAE 90.1-2010 Energy Standard for minimum SEER and EER requirements.
4. 48KC units comply with US Energy Policy Act (2005). To evaluate code compliance requirements, refer to state and local codes or visit the following website: http://bcap-energy.org

Performance Features

  • ASHRAE 90.1 compliant
  • Single-stage cooling capacity control
  • Up to 14.1 SEER and 12.0 EER
  • Gas efficiencies up to 82%
  • 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
  • Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and energy saving indoor fan motor delay
  • 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
  • Exclusive IGC anti-cycle protection for gas heat operation
  • Solid-state electronic direct spark ignition system and flame roll-out safety protector

Standard Limited Warranty

  • 10 years parts only heat exchanger - aluminized
  • 15 years parts only heat exchanger - stainless steel
  • 5 years parts only compressor
  • One year parts only on all other parts
  • Additional extended warranty packages available

For California Residents - 3-5 Ton G/E Models Only

For installation in SCAQMD only: This furnace does not meet the SCAQMD Rule 1111 14 ng/J NOx emission limit, and thus is subject to a mitigation fee of up to $450. This furnace is not eligible for the Clean Air Furnace Rebate Program: www.CleanAirFurnaceRebate.com.

  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
Gas Heat
Liquid propane (LP) conversion kit   X
High altitude conversion 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 Low Gas Heating Input (MBtuh) Medium Gas Heating Input (MBtuh) High Gas Heating Input (MBtuh) Approx. Unit Weight (lbs)
3 1 (14.0) 74x47x33 72 115 - 490
4 1 (14.0) 74x47x33 72 115 150 544
5 1 (14.1) 74x47x41 72 115 150 597

AHRI = Air-Conditioning, Heating & Refrigeration Institute
ASHRAE = American Society of Heating, Refrigerating and Air Conditioning, Inc.
EER = Energy Efficiency Ratio
SEER = Seasonal Energy Efficiency Ratio

NOTES
1. Rated and certified under ARI Standard 210/240.
2. Ratings are based on:
» Cooling Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 95°F (35°C) db outdoor air temp.
» IPLV Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 80°F (27°C) db outdoor air temp.
3. All 48KC units comply with ASHRAE 90.1-2010 Energy Standard for minimum SEER and EER requirements.
4. 48KC units comply with US Energy Policy Act (2005). To evaluate code compliance requirements, refer to state and local codes or visit the following website: http://bcap-energy.org

California residents please see Proposition 65

carrier-ser-143-course
Expert Training @ Carrier University: Troubleshooting Single Zone Rooftops