WEATHERMAKER - 48KC
WEATHERMAKER - 48KC-1

Carrier Weathermaker – 48KC Commercial Rooftop Units

48KC WEATHERMAKER® rooftop units were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, “no-strip screw” collars, and handled access panels, we’ve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with Puron® (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes.

  • 3 to 5 Nominal Tons
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Performance Features

  • ASHRAE 90.1 compliant
  • Single-stage cooling capacity control
  • Up to 14.1 SEER and 12.0 EER
  • Gas efficiencies up to 82%
  • Cooling operating range up to 115 °F (46°C) and down to 25°F (-4°C) using winter start kit
  • Innovative non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
  • Exclusive IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic and energy saving
  • indoor fan motor delay
  • Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection

Maintenance Features

  • Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
  • Access panels with easy grip handles
  • Innovative, easy starting, no-strip screw feature on unit access panels
  • Tool-less filter access door
  • Optional hinged access panels also available
  • Direct Drive – ECM indoor fan motor standard with optional belt drive systems available
  • Two-inch disposable return air filters

Installation Features

  • Same footprint as installed Carrier 3-5 ton rooftops back to 1989, reducing installation costs and time
  • Field convertible from vertical to horizontal airflow configuration
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point gas, electric, and controls 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
  • Low pressure and high-pressure switch protection
  • Exclusive IGC anti-cycle protection for gas heat operation
  • Solid-state electronic direct spark ignition system and flame roll-out safety protector

Standard Limited Warranty

  • 10 years parts only heat exchanger – aluminized
  • 15 years parts only heat exchanger – stainless steel
  • 5 years parts only compressor
  • One year parts only on all other parts
  • Additional extended warranty packages available

Carrier Weathermaker - 48KC Commercial Rooftop Units Brochure

Carrier Weathermaker - 48KC Commercial Rooftop Units Manual

Carrier Weathermaker - 48KC Commercial Rooftop Units Document

Nominal Cooling Ton Size Cooling Stages AHRI Efficiency (SEER) EER Dimensions (in) LxWxH Low Gas Heating Input (MBtuh) Medium Gas Heating Input (MBtuh) High Gas Heating Input (MBtuh) Approx. Unit Weight (lbs)
3 1 (14.0) 74x47x33 72 115 – 490
4 1 (14.0) 74x47x33 72 115 150 544
5 1 (14.1) 74x47x41 72 115 150 597

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Options

Factory-Installed Field-Installed
Cabinet
Thru the base electrical or gas line connections X X
Hinged access panels X
Coil Options
Cu/Cu indoor and/or outdoor coils X
Pre-coated outdoor coils X
Premium, e-coated outdoor coils X
Humidity Control
Humidi-MiZer adaptive dehumidification system (3-phase models only) X
Condenser Protection
Condenser coil hail guard (louvered design) X X
Controls
Thermostats, temperature sensors and subbases X
PremierLink DDC communicating controller X X
RTU Open multi-protocol controller X X
Smoke detector (supply and/or return air) X
Time Guard II compressor delay control circuit X
Filter status switch X
Fan status switch X
Economizers & Outdoor Air Dampers
EconoMi$er IV (for electro-mechanical controlled RTUs) X X
EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD) X X
EconoMi$er 2 (for DDC controlled RTUs) X X
Ultra-low leak economizer dampers X X
Motorized 2-position outdoor air damper X X
Manual outdoor dir damper X
Barometric relief X X
Power exhaust X
Economizer Sensors & IAQ Devices
Single dry bulb temperature sensors X X
Differential dry bulb temperature sensors X
Single enthalpy sensors X X
Differential enthalpy sensors X
CO2 sensor (wall, duct, or unit mounted) X X
Gas Heat
Liquid propane (LP) conversion kit X
High altitude conversion kit X
Indoor Motor & Drive
Multiple motor and drive packages X
Low Ambient Control
Winter start kit X
Motormaster head pressure controller X
Power Options
Convenience outlet (powered) X
Convenience outlet (unpowered) X
Non-fused disconnect X
Roof Curbs
Roof curb 14″ (356mm) X
Roof curb 24″ (610mm) X

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Maria LeitaoMaria Leitao

Maury from Cozy Comfort did a fantastic job of examining the functionality of my furnace and cleaning the major components. He tested my furnace to make sure that it would run efficiently in the winter. My humidifier was cleaned, the drip pad replaced and settings properly set up. Thank you Maury for your effective care. thank you Cozy Comfort- you are a company that has proven your worth over the past 25 years that you have looked after my family's heating and cooling needs.

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Susanna PingitoreSusanna Pingitore

I've been a client of Cozy Comfort for 15 yrs. for any HVAC need or service.

My AC broke down in the heat wave and could not be repaired. I called and talked to Brian @ Cozy Comfort.
Explained I was looking for a specific Carrier model and a humidifier as well.
He managed to find it and had both installed by tech. Alex and his crew within a few days. They did a good job and took all garbage with them.

While being installed, other companies I had called for a quote were calling me to inquire what I was looking for. Told them too late!

During this unexpected breakdown in prime summer heat, Brian was patient, quick and fair getting the job done quickly.

These days it is difficult to give a positive review but I highly recommend dealing with Brian at Cozy Comfort for any service they offer.

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Jeffrey HoffmanJeffrey Hoffman

From installation to maintenance, Cozy Comfort Plus Inc. provided us with prompt, quality service. It took under a day to install our Mitsubishi split-type air conditioner in May, 2021. This week, they attended to cleaning our unit’s filters in less than a day’s notice. The technician explained how to remove, clean and reinstall the filters ourselves which will save us money down the road. I highly recommend Cozy Comfort without reservation.

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