Carrier Commercial- A United Technologies Company
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48HG CENTURION™

Single-Package Rooftop
Ultra-High Efficiency
Gas Heating/Electric cooling Units
12½ to 25 Nominal Tons
 		48HG Rooftop Unit Energy Star

48HG units are one-piece high-efficiency rooftop cooling units with gas heat; all units are pre-wired and pre-charged with R-22 at the factory. Units are factory tested in both heating and cooling modes.

The 48HGD model is low heat, 48HGE is medium heat, and the 48HGF model is high heat. The 48HG is available in vertical airflow or side by side horizontal airflow models.

All 48HG units come standard with the ComfortLink™ controller and scroll compressors.
Performance Features
  • EERs up to 11.6 and IPLVs up to 13.7
  • Sizes 016, 020 and 024 utilize three electronically and mechanically independent refrigerant circuits; sizes 014 and 028 utilize two electronically and mechanically independent refrigerant circuits
  • TXV refrigerant metering device for each circuit
  • 2-inch or optional 30% pleated, return air filters in 2-inch filter track. 4-inch filter track optional
  • ComfortLink controller:
    • Communications
    • Scrolling Marquee display
    • Time schedule
    • Space temperature sensor capability
    • Service diagnostics, alarms and alarm history
    • Service and start-up Run Test capability
    • CO2 sensor capability for Demand Control Ventilation
    • Compressor reverse rotation protection
  • Cooling operation range up to 125° F ambient and down to 0º F ambient
  • Low outdoor sound levels: 8.2 bel (sizes 014-024), 8.5 bel (size 028)
  • Sizes 014-024 rated in accordance with ARI Standard 360
  • Tested in accordance with UL Standard 1995 and listed by UL and UL, Canada
  • 48HG014, 016, 020 and 024 are ENERGY STAR® listed
Maintenance Features
  • Hinged service access panels with double wall construction, quick turn latches and panel tiebacks
  • Indoor fan deck slides out for added service convenience
Installation Features
  • Fit up to installed Carrier DP, DR, TJ, HJ roof curbs
  • Dedicated vertical or side-by-side horizontal airflow units
  • Vertical airflow units are field convertible to side by side horizontal airflow with a field-installed accessory kit or factory-installed option
  • Single point electrical service entry. Through the basepan electrical connection is available.
  • Alternate motor and alternate drives are available
Reliability Features
  • Compressor protection includes high and low pressure cutouts and overtemperature protection
  • Crankcase heaters are standard on all models
  • Freeze protection on all circuits
  • Liquid line filter driers
  • Condenser fan motors are internally protected and have shaft down motor design
  • Cabinet made of pre-painted, galvanized steel with baked enamel finish is fully insulated
  • Induced draft combustion system used for reliability and safety
  • Reliable IGC (integrated gas unit controller) provides system evaluation and troubleshooting via on-board LED
  • Direct spark ignition with two-stage capacity control
  • Alumagard™ coated Turbo-Tubular™ heat exchangers
  • Single point gas connection and flue outlet hood
Standard Limited Warranty
  • Standard one-year product warranty
  • Ten-year warranty on Alumagard coated Turbo-tubular heat exchanger, aluminized and stainless steel
  • Five-year warranty all compressors
Options and Accessories
  Factory Installed Option Field Installed Accessory
Economizer Yes Yes
Two-position damper   Yes
Power exhaust Yes Yes
Barometric relief Yes Yes
Stainless steel heat exchanger Yes  
Hail guard   Yes
Horizontal airflow Yes  
Horizontal conversion kit Yes Yes
Liquified propane (LP) conversion kit   Yes
CO2 Sensor Yes Yes
Smoke detector Yes Yes
Filter status Yes Yes
Fan status   Yes
Non-fused disconnect Yes  
GFI 115-V convenience outlet Yes  
Enthalpy sensor   Yes
Differential enthalpy sensor   Yes
30% pleated filters (2-in.) Yes  
4-in. filter capability Yes  
Condenser and evaporator coil options Yes  
Standard motor with optional drive Yes  
Alternate motor with standard drive Yes  
Alternate motor with optional drive Yes  
14-in. full perimeter curb   Yes
24-in. full perimeter curb   Yes
Thermostats and subbases   Yes
Electronic programmable thermostat   Yes
ASHRAE 90.1Energy starAHRI standard 340/360 unitary large ac
Sizes
014-024		Sizes
014-024
C-UL-US
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