Carrier "A" – Series Rooftop Products are pre-wired and
charged with R-22 and tested in both cooling and heating
modes at the factory. All 48AJ, AK, AW, AY models feature
an industrial grade cabinet with fully hinged access panels.
Superior supply fan performance with up to 3.5 in. external
static pressure is standard.
They are available in dedicated vertical down shot and
horizontal side supply/return airflow models. There are "A"
Series models available for Constant Volume or Variable
Air Volume applications. A wide variety of gas options are
available.
All "A" Series units come standard with ComfortLink™
control and Scroll compressors on dual independent TXV
controlled refrigeration circuits.
• High-Efficiency
• Gas Heating/Electric Cooling Units
• 20 to 60 Nominal Tons
48AJ - CV, Vertical
48AK - VAV, Vertical
48AW - CV, Horizontal
48AY - VAV, Horizontal
geographical area. Please contact your local Dealer.
- High-efficiency scroll compressors
- TXV refrigerant metering device for each circuit
- Two-stage cooling on Constant Volume units, with multiple adaptive demand control for up to 5 stages of cooling capacity
- Cooling operation range up to 120° F ambient and down to 35° F ambient
- 115-volt and 24-volt control circuit
- Sloped, aluminized steel condensate pan
- Two-inch disposable-type return air filters (Optional four inch available)
- Fixed speed belt-drive blower drive
- High-efficiency motors meet EPACT (Alternate motors are available)
- Two-position outside air damper is standard, capable of admitting up to 25% outdoor air during fan operation, closed when the fan is off. Outside air hoods and permanent filters.
- Meet or exceed the EER requirements of ASHRAE Standard 90.1-1999
- Rated in accordance with ARI Standard 340/360
- Tested in accordance with UL Standard 1995
- Listed by ETL and ETL, Canada
- Variable Air Volume Units:
- Adjustable speed drive with true torque control (VFD)
- Soft start and anti-windmilling control
- Supply duct static pressure control
- Discharge air temperature control
- Supply air temperature reset
- Up to 6 steps of cooling capacity staging available with optional hot gas bypass
- ComfortLink™ control:
- Easy to use Scrolling Marquee Display
- Time schedule
- Space temperature sensor capability
- Service diagnostics, alarms and alarm history
- CO2 sensor capability for Demand Control Ventilation (DCV)
- Compressor reverse rotation protection
- Short-cycle compressor protection
- Self-diagnostic service and start up run test capability
- Carrier Comfort Network® communications or stand-alone operation
- Remote start/stop capability
- ComfortID™ system with 37H and 45 series PIC terminals
