WeatherMaster® Single-Packaged Rooftop Units 48P Gas Heating : Electric Cooling Units with Puron® (R-410A) Refrigerant 30 to 100 Nominal Tons

Gas Heating / Electric Cooling Units with Puron® (R-410A) Refrigerant

30 to 100 Nominal Tons

48P2 – Vertical CV/SAV
48P3 – Vertical VAV
48P4 – Horizontal CV/SAV
48P5 – Horizontal VAV

Carrier P Series rooftop units are pre-wired and factory-tested in both cooling and heating modes. All models feature an industrial grade cabinet with fully hinged access panels. Forward-curved supply fans provide performance of up to 4 in. external static pressure (ESP) and 6 in. ESP with optional airfoil supply fans.

Units are available in constant volume (CV), staged air volume (SAV), or variable air volume (VAV) applications, with a wide variety of gas heating options. Units come with the ComfortLink™ DDC (direct digital control) control system, scroll compressors on independent thermostatic expansion valve (TXV) controlled refrigeration circuits.

 

Performance Features

• Multiple high-efficiency scroll compressors include a crankcase heater and vibration isolation
• Up to 8 steps of cooling capacity control with intertwined evaporator coils for full-face active operation at part-load conditions
• Cooling operating range from 32 to 115 F ambient (down to -20 F with accessory Motormaster® V control)
• ComfortLink™ control includes: easy to use scrolling marquee display, service diagnostics, run test capabilities, demand limit capability, compressor reverse rotation protection, and BACnet communication option.
• Tested in accordance with UL Standard 1995 and listed by ETL and ETL, Canada
• Meet or exceed the EER requirements of ASHRAE Standard 90.1, rated in accordance with ARI Standard 340/360
• California Energy Commission Title 24 Compliant

Reliability Features

• Dual electrically and mechanically independent refrigerant circuits, with coil frost protection, liquid line filter driers, and crankcase heaters standard on all models
• Compressor protection includes high and low pressure transducers with safety cutouts
• Circuit breaker protection for all power components
• Cabinet made of pre-painted, galvanized steel with baked enamel finish, which meets ASTM B117 salt spray resistance test
• Condenser-fan motors are totally enclosed with internal protection
• Direct spark ignition, Alumagard Coated Turbo-tubular heat exchangers, and induced draft combination provide for safety and reliability
• Reliable Integrated Gas Unit Controller (IGC) provides system evaluation & troubleshooting via on-board LED and two stage gas valves with redundant 100% shutoff

Maintenance Features

• Large hinged service access doors
• On-board diagnostics include refrigerant pressure sensors
• Double wall design available

Installation Features

• Shipped with R-410A refrigerant charge
• Single point electrical service entry, through unit bottom or side
• Lifting lugs
• Factory-installed pivoting outside air hoods