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WEATHERMASTER - 48HC
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Carrier Weathermaster – 48HC Commercial Rooftop Units

(20 customer reviews)

48HC WEATHERMASTER® rooftop unit 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 environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in both heating and cooling modes.

  • 3 to 25 Nominal Tons

 

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Performance Features

  • ASHRAE 90.1 and Energy Star compliant
  • Up to 15.6 SEER, 13.0 IEER, and 12.2 EER
  • Gas efficiencies up to 82%
  • Standard cooling operating range up to 125 °F (52°C) and down to 35°F (-2°C). Low ambient controllers can bring cooling operation down to -20°F (-29°C)
  • 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 and tool-less filter access door
  • Innovative, easy starting, no-strip screw feature on unit access panels
  • Optional hinged access panels also available
  • Belt drive evaporator-fan motor and pulley combinations available on all three phase models to meet any application
  • Electric Drive x13 (5 speed/torque) motor on 04 to 06 models
  • Two-inch disposable return air filters

Installation Features

  • Same footprint as installed Carrier 3-5 and 7.5-10 ton rooftops back to 1989, reducing installation costs and time
  • Field convertible from vertical to horizontal airflow for slab mounting (sizes 04 to 14)
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point gas and electric connections
  • Full perimeter base rail with built-in rigging adapters and fork truck slots
  • Dedicated vertical and horizontal airflow models available (factory option on size 17 to 28 units)

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
  • Extended warranty packages available

Carrier Weathermaster - 48HC Commercial Rooftop Units Brochure

Carrier Weathermaster - 48HC Commercial Rooftop Units Manual

Carrier Weathermaster - 48HC Commercial Rooftop Units Document

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Factory-Installed Options

  • Cabinet
    • Thru-the-base electrical or gas-line connections
    • Hinged access panels
    • Foil-faced insulation
  • Coil Options
    • Cu/Cu indoor and/or outdoor coils
    • Pre-coated outdoor coils
    • Premium, E-coated outdoor coils
  • Humidity Control
    • Humidi-MiZer Adaptive dehumidification system
  • Condenser Protection
    • Condenser coil hail guard (louvered design)
  • Controls
    • ComfortLink™ DDC communicating controller
    • PremierLink™ DDC communicating controller
    • RTU OPEN™ open-protocol controller
    • Smoke detector (supply and/or return air)
  • Energy Recovery
    • EnergyX® Factory Integrated Energy Recovery
  • Economizers & Outdoor
    • Air Dampers
    • EconoMi$er IV (for electro-mechanical controlled RTUs)
    • EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD)
    • EconoMi$er2 (for DDC controlled RTUs)
    • Ultra-low leak economizer dampers
    • Motorized 2 position outdoor-air damper
    • Manual outdoor-air damper (sizes 17-28)
    • Barometric relief
    • Power exhaust (sizes 17-28)
  • Economizer Sensors & IAQ Devices
    • Single dry bulb temperature sensors
    • Single enthalpy sensors
    • CO2 sensor (wall, duct, or unit mounted)
  • Gas Heat
    • Stainless steel heat exchanger
    • Flue discharge deflector
  • Indoor Motor & Drive
    • Multiple motor and drive packages
    • Staged Air Volume (SAV) Indoor Fan Speed System (sizes 08-28)
  • Low Ambient Control
    • Motormaster® head pressure controller
  • Power Options
    • Convenience outlet (powered)
    • Convenience outlet (unpowered)
    • Non-fused disconnect
    • HACR Circuit Breaker

Field-Installed Accessories

  • Cabinet
    • Thru-the-base electrical or gas-line connections
  • Condenser Protection
    • Condenser coil hail guard (louvered design)
  • Controls
    • Thermostats, temperature sensors, and subbases
    • PremierLink™ DDC communicating controller
    • RTU OPEN™ open-protocol controller
    • Smoke detector (supply and/or return air)
    • Time Guard II compressor delay control circuit
  • Energy Recovery
    • EnergyX® Factory Integrated Energy Recovery
  • Economizers & Outdoor
    • Air Dampers
    • EconoMi$er IV (for electro-mechanical controlled RTUs)
    • EconoMi$er X (for electro-mechanical controlled RTUs with CA Title 24 FDD)
    • EconoMi$er2 (for DDC controlled RTUs)
    • Ultra-low leak economizer dampers
    • Motorized 2 position outdoor-air damper
    • Manual outdoor-air damper
    • Barometric relief
    • Power exhaust
  • Economizer Sensors & IAQ Devices
    • Single dry bulb temperature sensors
    • Differential dry bulb temperature sensors
    • Single enthalpy sensors
    • Differential enthalpy sensors
    • CO2 sensor (wall, duct, or unit mounted)
  • Gas Heat
    • Liquid propane (LP) conversion kit
    • High altitude conversion kit
  • Low Ambient Control
    • Winter start kit
    • Motormaster® head pressure controller
  • Roof Curbs
    • Roof curb 14” (356mm)
    • Roof curb 24” (610mm)

Data

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 (15.0) 74 x 47 x 33 72 115 — 505
4 1 (15.6) 74 x 47 x 41 72 115 150 590
5 1 (15.2) 74 x 47 x 41 72 115 150 600
6 1 12.0 88 x 59 x 41 72 125 150 765
7.5 2 12.0 88 x 59 x 49 125 180 224 925
8.5 2 12.0 88 x 59 x 49 125 180 224 925
10 2 12.0 88 x 59 x 49 180 224 250 1099
10 2 11.5 88 x 59 x 49 180 224 250 1099
12.5 2 12.2 116 x 63 x 57 150 180 240 1430
15 2 12.0 128 x 87 x 49 220 310 400 1892
17.5 2 12.0 141 x 87 x 49 220 310 400 2102
20 2 12.0 141 x 87 x 57 220 310 400 2247
25 2 11.2 58 x 87 x 57 220 310 400 2292

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