WEATHEREXPERT - 48N
WEATHEREXPERT - 48N-1
WEATHEREXPERT - 48N-2

Carrier Weatherexpert – 48N Commercial Rooftop Units

  • 48N2 – Vert Supply/Return CV/SAV
  • 48N3 – Vert Supply/Return VAV
  • 48N4 – Horz Supply/Return CV/SAV
  • 48N5 – Horz Supply/Return VAV
  • 48N6 – Vert Supply/Horz Return CV/SAV
  • 48N7 – Vert Supply/Horz Return VAV
  • 48N8 – Horz Supply/Vert Return CV/SAV
  • 48N9 – Horz Supply/Vert Return VAV
    Carrier N Series rooftop units are pre-wired and factory-tested in both cooling and heating modes. All 48N models feature a double wall foam panel cabinet design with hinged man-sized access panels.
    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) communicating control system and hermetic scroll compressors on dual independent refrigeration circuits controlled via Electronic Expansion Valves (EXV).
  • 75 to 150 Nominal Tons
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Performance Features

  • High Capacity and High Efficiency models available, meeting or exceeding EER requirements of AHSRAE Standard 90.1
  • Multiple high-efficiency scroll compressors include a crankcase heater and spring isolation, providing 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 115F ambient on a standard model, down to -20F with MotorMaster® V control, and upto 125F on high efficiency models
  • Double wall foam panel construction
  • Induced draft gas heating system with the direct spark ignition (DSI) control system measures 81% annual fuel utilization efficiency (AFUE) using the integrated gas controller (IGC)
  • 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.
  • California Energy Commission Title 24 Compliant

Reliability Features

  • Dual electrically and mechanically independent refrigerant circuits, with coil frost protection, liquid line filter driers, crankcase heaters, and Electronic Expansion Valves (EXV) standard on all models.
  • Compressor protection includes high and low pressure transducers with safety cutouts on compressor
  • 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
  • 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
  • Tested in accordance with UL Standard 1995 and listed by ETL and ETL, Canada

Maintenance Features

  • Large hinged service access doors
  • On-board diagnostics include refrigerant pressure sensors
  • Auto component testing simplifies troubleshooting
  • Standard Double wall construction

Installation Features

  • Shipped with R-410A refrigerant charge
  • Single point electrical service entry, through unit bottom or side
  • Lifting lugs

Standard Limited Warranty

  • 3 years parts only on Novation™ condenser coil
Carrier Weatherexpert – 48N Commercial Rooftop Units was last modified: August 3rd, 2023 by HVAC Expert

Carrier Weatherexpert - 48N Commercial Rooftop Units Brochure

Carrier Weatherexpert - 48N Commercial Rooftop Units Manual

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Factory-Installed Options

  • 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 tracks for auxiliary coil
  • 4’ or 8’ blank sections
  • 4-in. pleated filters
  • Bag or cartridge filters with pre-filters
  • Final filters
  • Field Use Filter Section
  • Various airflow measuring station combinations
  • UV-C lamps
  • Barometric relief
  • Modulating integrated economizer damper
  • Modulating power exhaust with VFD and building pressure sensor
  • Return fan with VFD and supply fan tracking
  • High static fan options, supply, exhaust and return
  • Alternate high-capacity evaporator coil
  • 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
  • Modulating gas heat control
  • Totally enclosed fan cooled (TEFC) or Outdoor Drip Proof (ODP) fan motors
  • Bypass on fan motor VFDs
  • GFI (ground fault interrupter) convenience outlet (powered)
  • Marine lights
  • Non-fused disconnect
  • Agion interior coating
  • Low outdoor sound
  • Low ambient control
  • 65 kA SCCR (460V) or 25 kA SCCR (575V)
  • Digital compressor
  • BACnet communication
  • Replaceable core filter drier and service valves
  • Security grilles or louvers for condenser section
  • Humidi-MiZer™ adaptive dehumidification system

Field-Installed Accessories

  • Flue extension
  • Mixed air and final filter kits
  • CO2 space sensor
  • Outdoor or return humidity sensor (enthalpy)
  • Field use control box
  • 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
  • MODBUS Carrier translator
  • LonWorks Carrier translator
  • BACnet Communication module
  • System Pilot™ interface
  • Touch Pilot™ interface
  • 14-in. roof curb
  • Motormaster V control
  • Compressor sound blankets

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People like you shared their purchase and installation experience!

Jon ConwayJon Conway

We are so happy with the service, support and product that we received from Cozy Comfort Plus. Brian was incredible to work with, he took the time to understand what we were looking for and helped us with the designs and what the best fireplace for us might be. He is extremely easy to work with, very easy to communicate with and so fast and responsive!

Everything happened exactly on schedule and as planned. It was a well oiled machine!! The crews that were here to build everything were super friendly, kind, courteous and knowledgeable.

Highly highly recommend to all 😀👍

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Andres JarrinAndres Jarrin

Brian and his team were very professional, the customer service was excellent and their prices are very competitive. One month after the installation of our tankless water heater, everything is running and operating as promised! My only recommendation is to try to offer credit card payment options that do not entail going to their office in person. Other than this small inconvenience, this service was superb. Thanks Brian!

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Jonathan ChanJonathan Chan

This company has excellent products and even better service, and it shows through client interaction. They care about their customers and complete their work in a timely fashion. Best of all they leave the work area in cleaner condition than when they arrived.

Their showroom has items you can't even imagine.

I have used Cozy Comfort Plus many times, personally purchased the following from them:
-Furnace
-A/C unit
-Air cleaner and purifier
-Tankless water heater
-Fireplaces (Mantles)
-Fire table and
-BBQ

Brian and his team are my go to.

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