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
Factory-Installed Options
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Low or high gas heat options include:
- Aluminized steel heat exchanger
- Stainless steel heat exchanger
- Stainless steel heat exchanger with staged gas discharge air temperature control
- Stainless steel heat exchanger with modulating gas discharge air temperature control
- Extended chassis for an auxiliary coil
- Double wall construction
- 2-in. pleated filters with 4-in. field convertible filter rack
- Bag or cartridge filters (sizes 030-070 only)
- Outdoor air CFM station
- Manual outside air self-closing damper
- Modulating integrated economizer damper
- Modulating integrated ultra-low leak economizer damper
- Barometric relief
- Non-modulating power exhaust (CV units only)
- Modulating power exhaust with building pressure sensor
- Alternate high-capacity evaporator coil (all sizes except 035)
- High capacity power exhaust with VFD (sizes 075-100 only)
- Return fan with VFD (sizes 075-100 only)
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Condenser and evaporator options include:
- All-aluminum Novation condenser and Al/Cu evaporator
- E-coat all-aluminum Novation condenser and Al/Cu evaporator
- Hot gas bypass
- Controls input expansion board
- Bypass on indoor fan motor VFD
- GFI (ground fault interrupter) convenience outlet (powered)
- Power terminal block
- Non-fused disconnect
- Airfoil supply fan (sizes 075-100 only)
- Low outdoor sound
- Low ambient control
- 65 kA SCCR (460V) or 25 kA SCCR (575V)
- Digital compressor
- BACnet communication
- Replaceable core filter drier
- Security grille (sizes 070-100 only)
- Humidi-MiZer™ adaptive dehumidification system
Field-Installed Accessories
- Liquid propane (LP) conversion kit (sizes 030-070 only)
- 2-in. and 4-in. filter kits
- CO2 space sensor
- Outdoor or return humidity sensor (enthalpy)
- Condenser coil hail guard assembly
- Controls input expansion board
- Navigator™ display
- Return air CO2 sensor
- Smoke detector
- Filter switch
- Fan status switch
- T55 temperature sensor
- T56 temperature sensor
- Space temperature sensor with CO2 override
- Space temperature sensor set point and CO2 override
- BACnet Communication module
- MODBUS Carrier translator
- LonWorks Carrier translator
- System Pilot™ interface
- Touch Pilot™ interface
- 14-in. roof curb
- Motormaster V control
- Compressor sound blankets
