Carrier Weatherexpert – 50LC

50LC WEATHEREXPERT® rooftop units were designed by customers for customers. They are Carrier’s most efficient commercial packaged rooftop ever produced and have the some of the industry’s highest IEERs available. The multi-stage cooling compressor allows for added comfort, energy savings, and humidity control. The unit is ideal for single zone variable air volume capability. 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.

Performance Features

  • Exceeded Department of Energy Advanced RTU Challenge by 15%
  • Exceeds ASHRAE 90.1 and Energy Star efficiency levels, as well as Consortium for Energy Efficiency (CEE) criteria
  • 3 to 5 ton models have two-stage cooling capacity control and 6 to 23 ton models have three-stage cooling capacity control
  • Up to 17.5 SEER and 21.0 IEER
  • Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain
  • 3 to 23 ton models have standard cooling operation up to 125 °F (52°C), and down to 10°F (-12°C) (3-5 ton models), or down to 40°F (4°C) (6-23 ton models). 3 to 5 ton models have cooling operation down to 0°F (-18°C) with ComfortLink controls.
  • Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection
  • VAV models use a duct static pressure sensor to vary the units indoor fan motor variable frequency drive (VFD) while cooling capacity is controlled by the units supply air temperature sensor, to make sure the correct temperature in each zone.

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
  • Two-inch disposable return air filters
  • All models have a belt drive evaporator-fan motor and pulley combinations with VFD controller to match the capacity cooling stages for maximum efficiency and comfort control
  • 3 to 5 ton models have an optional ECM direct drive (multi-speed and torque) indoor fan motor system

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 for slab mounting without any special kits (size 04-12 units)
  • Provisions for thru-the-bottom power entry capability as standard
  • Single point electric, gas, and controls 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 14 to 26 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
  • Large capacity liquid line filter drier as standard

Standard Limited Warranty

  • 5 years parts only electric heater
  • 5 years parts only compressor
  • 3 years parts only on ComfortLink controls
  • One year parts only on all other parts
  • Extended warranty packages available
Carrier Weatherexpert – 50LC was last modified: March 26th, 2018 by HVAC Expert

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Factory-Installed Options

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 (sizes 04-06)
    • RTU OPEN multi-protocol controller
    • Smoke detector (supply and/or return air)
  • Economizers & Outdoor Air Dampers
    • 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 14-26)
    • Barometric relief
    • Power exhaust (sizes 14-26)
  • Economizer Sensors & IAQ Devices
    • Single dry bulb temperature sensors
    • Single enthalpy sensors
    • CO2 sensor (wall, duct, or unit mounted)
  • Electric Heat
    • Multiple Electric Resistance Heater KW Sizes
    • Single Point kit
  • Indoor Motor & Drive
    • Multiple motor and drive packages
  • Low Ambient Control
    • ComfortLink provides cooling operation down to 0°F (-18°C) (3 to 5 ton only)
  • 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
    • RTU OPEN multi-protocol controller
    • Smoke detector (supply and/or return air) (sizes 14-26)
    • Time Guard II compressor delay control circuit
    • Filter status switch
    • Fan status switch
  • Economizers & Outdoor Air Dampers
    • 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)
  • Electric Heat
    • Multiple Electric Resistance Heater KW Sizes
    • Single Point kit
  • Low Ambient Control
    • Winter start kit
  • Roof Curbs
    • Roof curb 14″ (356mm)
    • Roof curb 24″ (610mm)

Data

Nominal Cooling Ton Size Cooling Stages AHRI Efficiency (SEER) IEER* Dimensions (in) LxWxH Electric Heat Nominal Kilowatt Range Approx. Unit Weight (lbs)
3 2 (17.1) 74 x 47 x 33 4.4 to 16.0 458
4 2 (17.5) 74 x 47 x 41 6.0 to 23.0 545
5 2 (17.2) 74 x 47 x 41 6.0 to 26.5 550
6 3 20.7 88 x 59 x 49 6.0 to 25.5 967
7.5 3 19.9 116 x 63 x 57 10.0 to 33.5 1535
8.5 3 21.9 116 x 63 x 57 10.4 to 33.5 1536
10 3 20.8 116 x 63 x 57 10.0 to 51.0 1536
12.5 3 19.3 128 x 87 x 49 15.0 to 50.0 1754
15 3 18.5 141 x 87 x 49 25.0 to 75.0 1996
17.5 3 17.9 141 x 87 x 49 25.0 to 75.0 2102
20 3 18.2 158 x 87 x 57 25.0 to 75.0 2248
23 3 18.3 158 x 87 x 57 25.0 to 75.0 2393

People like you shared their purchase and installation experience!

Faik FaisalFaik Faisal

I am really happy with the technician. Before he worked on the fix, he explained the issue nicely. Thank you guys for fixing the A/C.

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Amir VaghariAmir Vaghari

Cozy Comfort Plus Inc. is the place to go for all your heating and air conditioning needs. Brian is very professional, honest and trustworthy. He knows what's best to do. We had this company do jobs for us, our friends and relatives and it's always been a pleasure dealing with them.

Our most recent call to them was about our heat pump in our pent house in Mississauga. They already had successfully serviced it a few times in the past and this time around it was time for it to be changed to a better unit. Cozy Comfort Plus again did a fantastic job. We are very satisfied with their work and our experience with them.

Thank you so much Brian and the team!!

Amir Vaghari

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Ron HutchisonRon Hutchison

I can't stress enough how happy & pleased we are with our Napoleon BBQ. From the moment we walked into the showroom, we were met with a very friendly greeting.

My wife and I were so impressed with the calm, sincere and gracious demeanor of Brian. He answered all our questions, gave us his thoughts and professional opinions on everything inquired about.

We will definitely continue our business with Brian and the entire team at Cozy Comfort Plus.

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