Carrier: 48HJ Rooftop Unit (3 to 12.5 Tons)

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48HJ WEATHERMASTER®

Single-Package Rooftop
High-Efficiency
Gas Heating/Electric Cooling Units
3 to 12½ Nominal Tons

48HJ units are high-efficiency, single-packaged electric cooling, gas heating units that are prewired and pre-charged with R-22 (HCFC). The units are factory tested in both heating and cooling modes.

Performance Features

SEERs up to 13.0. EERs to 11.6
Single compressors on 3 to 6 ton sizes
Dual compressors on 7-1/2 to 12-1/2 ton sizes
Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
Convertible from vertical to horizontal airflow for slab mounting
Copper tube, aluminum fin coils with optional corrosion resistant coils
Exclusive Cycle-LOC™ anti-cycle compressor protection
Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
Acutrol™ refrigerant metering system
Fully insulated cabinet
Exclusive IGC solid-state control for on-board diagnostics with LED error code designation burner control logic and energy saving indoor fan motor delay
“Low NOx” models that meet California Air Quality Management NOx specs
Induced draft combustion
Redundant gas valves with up to two stages of heating
Cooling operating range from to 25° F up to 125° F
Rated in accordance with ARI Standards 210 (004-006 sizes) and 360 (007-014 sizes)
Designed in accordance with Underwriters’ Laboratories Standard 1995
Listed by UL and UL, Canada
Models 48HJ004-012 are Energy Star qualified

Maintenance Features

Two-inch disposable return air filters
Tool-less filter access door
Belt drive evaporator-fan motors with adjustable pulleys

Installation Features

Thru-the-bottom power entry capability standard
Single point gas and 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
Loss of charge, freeze protection, and high-pressure switches
Exclusive IGC anti-cycle protection for gas heat operation
Solid-state electronic direct spark ignition system
Flame roll-out safety protector

Standard Warranty

10-year heat exchanger
5-year compressor
1-year parts

	Factory Installed Option	Field Installed Accessory
100% or 25% open two-position damper		Y
COBRA™
Energy recovery unit	Y
Full perimeter roof curb		Y
Sleeper rail (for use with standard unit roof curb)		Y
Condenser coil grille		Y
Condenser coil hail guard assembly		Y
Convenience outlet	Y
Copper fins indoor and outdoor coil	Y
Copper fins outdoor coil	Y
E-Coat outdoor coil (aluminum)	Y
E-Coat outdoor coil (copper)	Y
EconoMi$er IV with controller	Y	Y
EconoMi$er2 (without controller)	Y	Y
Electronic programmable thermostat		Y
Energy$Recycler™
Unit		Y
Mounting kit		Y
Supply air blower		Y
Transformer for 460 v		Y
Transformer for 575 v		Y
Enthalpy or differential enthalpy sensor		Y
Fan/filter status		Y
Flue discharge deflector		Y
Flue shield		Y
High-static motor and drive	Y
Hinged access panels	Y
Hinged panel kit for economizer		Y
Dehumidification package	Y
Humidistat		Y
Indoor air quality (CO₂) sensor		Y
Thermidistat™		Y
Low NOX (004-006)	Y
Liquid propane conversion kit		Y
Manual outdoor-air damper		Y
Low ambient kit		Y
Novar control	Y
Outdoor air enthalpy sensor		Y
Power exhaust transformer for 575 v		Y
Power exhaust with barometric relief		Y
Pre-coat aluminum fins on outdoor coil	Y
PremierLink™ controller	Y	Y
Return air CO₂ sensor		Y
Return air enthalpy sensor		Y
Return air temperature sensor		Y
Roof curbs (vertical and horizontal discharge)		Y
Thermostats and subbases		Y
Thru-the-bottom utility connections		Y
Compressor cycle delay control circuit		Y
Unit-mounted non-fused disconnect	Y



Sizes 004-012	Sizes 004-006	Sizes 007-014

Carrier Corporation

A Member of The United Technologies Corporation Family

Stock Symbol: UTX

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