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WeatherMaker® Applied Rooftop Units
50K

Electric Cooling with Puron Advance® (R-454B) Refrigerant with Optional Electric Heat

20 to 60 Nominal Tons

Carrier K Series Applied Rooftop products are pre-wired and charged with Puron Advance™ (R-454B) low global warming potential (GWP) refrigerant and tested in both cooling and heating modes (if equipped) at the factory. All models feature a commercial grade cabinet with fully hinged access panels and are designed to fit most legacy Carrier 48/50A and 48/50E curbs. All K series units include a high-capacity forward curve indoor fan with variable frequency drive (VFD) control and available Staged Air Volume (SAV) or Variable Air Volume (VAV) configurations to meet application requirements.

The standard SmartVu™ control includes a 7-inch touchscreen display with easy to navigate user interface for easy setup and configuration. SmartVu™ can operate stand-alone, with a thermostat, with Carrier i-Vu® 8.0 web-based interfaces, or with other BACnet building automation systems (BAS). A variety of factory installed options are available, including electric heat, ultra-low leak economizer, and modulating Humidi-MiZer® dehumidification.


carrier-AHRI-340-360-Unitary-Large-AC
carrier-ASHRAE-90-1-certification
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Standard Features

  • Low global warming potential (GWP) Puron Advance™ refrigerant (R454B)
  • Refrigerant leak detection system with dissipation control
  • Uneven tandem scroll compressors for improved staging
  • Galvanized steel condensate drain pan
  • Single refrigerant circuit with fully active Al/Cu evaporator coil on 20-35 tons 
  • Dual refrigerant circuit with intertwined Al/Cu evaporator coil on 40-60 tons 
  • EXV metering devices for wide operating range 
  • Large MCHX condenser coils for reduced refrigerant charge and efficient operation 
  • Mechanical cooling from 50°F to 115°F ambient 
  • Belt drive indoor fan system with forward curve blowers 
  • Open drip proof (ODP) indoor fan motor with variable frequency drive (VFD) control for application flexibility
  • Multiple fan motor size selections
  • Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection 
  • Fully insulated cabinet with fiberglass insulation 
  • Manual outdoor air damper with outdoor air hoods 
  • Dedicated 2” pre-evaporator filter rack with MERV 5 filter 
  • Carrier SmartVu™ controls with 7” touchscreen display 
  • Standard DXLAT, OAT, and RAT sensors 
  • Multiple indoor fan control methods, including SAV, CV, SZ-VAV, multi-zone VAV duct pressure, or 3rd party input 
  • UL listed for compliance with UL Standard 60335-2-40 
  • Certified to AHRI Standard 340/360 
  • 10kA short circuit current rating (SCCR)

Reliability Features

  • SmartVu controls with system monitoring and alarming
  • Liquid line filter drier to help protect refrigerant system
  • DX high and low-pressure protection
  • EXV metering devices optimize unit performance
  • Standard crank case heaters

Installation Features

  • Fits most legacy Carrier A & E curbs 
  • Heavy duty base rail with lifting lugs for easy rigging 
  • Dedicated supply and return configurations 
  • Provisions for thru-the-bottom power and control wiring 
  • Single point electric and gas connections 
  • Terminal block power connection 
  • Factory installed sensors for control operation

Maintenance Features

  • Dedicated high and low voltage control sections 
  • DX pressure and temperature sensors can be read from the SmartVu display, eliminating the need for external gauges 
  • Hinged doors on frequently accessed sections, including controls, filters, evaporator, and indoor fan motor 
  • Two-inch disposable return air filters with filter hook

Standard Limited Warranty

  • 3-years parts only on MicroChannel condenser coil
  • 5-years non pro-rated warranty on heat exchanger
  • One year standard parts only

Factory-Installed Options

Electric Heat
  • High or low electric heat with two stage control
  • High or low electric heat with modulating silicon rectifier (SCR) control
Refrigerant Circuit
  • Lead, variable capacity digital compressor 
  • Low sound package includes shrouded, low sound condenser fans, low RPM motors, and sound blankets 
  • Low ambient package includes variable speed condenser fans to allow mechanical cooling down to -20°F (-28°C) 
  • High efficiency, low sound, low ambient package with Greenspeed® intelligence for improved part load efficiency, low ambient mechanical cooling, and low sound operation 
  • Humidi-MiZer® adaptive dehumidification system with modulating control
Construction
  • Double wall construction
  • Double wall construction with Agion® anti-microbial coating 
  • Double wall bottom for slab or dunnage mounted applications
Indoor Fan Motor
  • Shaft grounding rings 
  • VFD bypass 
  • TEFC indoor fan motor
Condenser & Evaporator Coils
  • E-Coat MCHX Condenser 
  • E-Coat Al/Cu Evaporator 
  • Stainless Steel Drain Pan
Controls
  • Humidity and enthalpy sensing (OARH & RARH) for dehumidification or free cooling control 
  • Return air CO2 sensor for ventilation control
Outdoor Air & Relief
  • Ultra-low leak economizer for ventilation and free cooling 
  • Barometric relief 
  • Multi-stage power exhaust with staged control 
  • Multi-stage power exhaust with staged building pressure control 
  • Power & control for accessory multi-stage power exhaust with staged building pressure control 
  • Power & control for accessory high-capacity power exhaust with modulating building pressure control
Service & Safety
  • Condensate overflow switch 
  • Pre-filter status switch with access door retainers 
  • Service pack with compressor isolation valves. replaceable core filter drier, extended lube lines 
  • Return air smoke detector 
  • Chicago refrigerant relief valve
Electrical
  • Non-fused disconnect 
  • Powered or un-powered convenience outlet 
  • Phase monitor 
  • High short circuit current rating (65kA for 208/230/460V, 25kA for 575V)
Indoor Air Quality (IAQ)
  • 2” pre-evaporator filter rack with 2” MERV 8 filters 
  • 4” pre-evaporator filter rack with 4” MERV 8 or 13 filters 
  • Factory-installed UV-C fixture with wiring, disconnect switch, door interlocks, and access door with UV safe view port

Field-Installed Accessories

Indoor Air Quality
  • Return air CO2 sensor 
  • CO2 space sensor 
  • CO2 aspirator box
  • UV-C Emitters
Building Pressure
  • Multi-stage power exhaust with staged building pressure control 
  • High-capacity power exhaust with modulating building pressure control 
  • Barometric relief
Controls
  • Return air CO2 sensor 
  • Smoke detector 
  • Dirty filter switch 
  • Non-communicating space sensors, including temperature and humidity 
  • Communicating space sensors, including temperature and humidity 
  • Space COsensors 
  • Carrier i-Vu® Equipment Touch display 
  • Thermostats
Miscellaneous Options
  • 14-inch Roof Curb
Size Nominal Capacity (Tons) Standard Airflow (CFM) Gross Cooling (BTUH) Heating Capacity Electric (kW) Base Weight* (lbs.) Dimensions* (ft-in)
Low High
020 20 8000 240 36 72 3169 13'-9" 7'-10" 6'-1⅛"
026 25 10000 278 3199
030 30 12000 308
034 35 14000 340
040 40 16000 415 4290 17'-11"
050 50 18000 500 4272
060 60 24000 625 54 108 5793 25'-11"

*Standard chassis/vertical airflow. See your Carrier representative for information and other configurations.

Standard Features

  • Low global warming potential (GWP) Puron Advance™ refrigerant (R454B)
  • Refrigerant leak detection system with dissipation control
  • Uneven tandem scroll compressors for improved staging
  • Galvanized steel condensate drain pan
  • Single refrigerant circuit with fully active Al/Cu evaporator coil on 20-35 tons 
  • Dual refrigerant circuit with intertwined Al/Cu evaporator coil on 40-60 tons 
  • EXV metering devices for wide operating range 
  • Large MCHX condenser coils for reduced refrigerant charge and efficient operation 
  • Mechanical cooling from 50°F to 115°F ambient 
  • Belt drive indoor fan system with forward curve blowers 
  • Open drip proof (ODP) indoor fan motor with variable frequency drive (VFD) control for application flexibility
  • Multiple fan motor size selections
  • Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection 
  • Fully insulated cabinet with fiberglass insulation 
  • Manual outdoor air damper with outdoor air hoods 
  • Dedicated 2” pre-evaporator filter rack with MERV 5 filter 
  • Carrier SmartVu™ controls with 7” touchscreen display 
  • Standard DXLAT, OAT, and RAT sensors 
  • Multiple indoor fan control methods, including SAV, CV, SZ-VAV, multi-zone VAV duct pressure, or 3rd party input 
  • UL listed for compliance with UL Standard 60335-2-40 
  • Certified to AHRI Standard 340/360 
  • 10kA short circuit current rating (SCCR)

Reliability Features

  • SmartVu controls with system monitoring and alarming
  • Liquid line filter drier to help protect refrigerant system
  • DX high and low-pressure protection
  • EXV metering devices optimize unit performance
  • Standard crank case heaters

Installation Features

  • Fits most legacy Carrier A & E curbs 
  • Heavy duty base rail with lifting lugs for easy rigging 
  • Dedicated supply and return configurations 
  • Provisions for thru-the-bottom power and control wiring 
  • Single point electric and gas connections 
  • Terminal block power connection 
  • Factory installed sensors for control operation

Maintenance Features

  • Dedicated high and low voltage control sections 
  • DX pressure and temperature sensors can be read from the SmartVu display, eliminating the need for external gauges 
  • Hinged doors on frequently accessed sections, including controls, filters, evaporator, and indoor fan motor 
  • Two-inch disposable return air filters with filter hook

Standard Limited Warranty

  • 3-years parts only on MicroChannel condenser coil
  • 5-years non pro-rated warranty on heat exchanger
  • One year standard parts only

Factory-Installed Options

Electric Heat
  • High or low electric heat with two stage control
  • High or low electric heat with modulating silicon rectifier (SCR) control
Refrigerant Circuit
  • Lead, variable capacity digital compressor 
  • Low sound package includes shrouded, low sound condenser fans, low RPM motors, and sound blankets 
  • Low ambient package includes variable speed condenser fans to allow mechanical cooling down to -20°F (-28°C) 
  • High efficiency, low sound, low ambient package with Greenspeed® intelligence for improved part load efficiency, low ambient mechanical cooling, and low sound operation 
  • Humidi-MiZer® adaptive dehumidification system with modulating control
Construction
  • Double wall construction
  • Double wall construction with Agion® anti-microbial coating 
  • Double wall bottom for slab or dunnage mounted applications
Indoor Fan Motor
  • Shaft grounding rings 
  • VFD bypass 
  • TEFC indoor fan motor
Condenser & Evaporator Coils
  • E-Coat MCHX Condenser 
  • E-Coat Al/Cu Evaporator 
  • Stainless Steel Drain Pan
Controls
  • Humidity and enthalpy sensing (OARH & RARH) for dehumidification or free cooling control 
  • Return air CO2 sensor for ventilation control
Outdoor Air & Relief
  • Ultra-low leak economizer for ventilation and free cooling 
  • Barometric relief 
  • Multi-stage power exhaust with staged control 
  • Multi-stage power exhaust with staged building pressure control 
  • Power & control for accessory multi-stage power exhaust with staged building pressure control 
  • Power & control for accessory high-capacity power exhaust with modulating building pressure control
Service & Safety
  • Condensate overflow switch 
  • Pre-filter status switch with access door retainers 
  • Service pack with compressor isolation valves. replaceable core filter drier, extended lube lines 
  • Return air smoke detector 
  • Chicago refrigerant relief valve
Electrical
  • Non-fused disconnect 
  • Powered or un-powered convenience outlet 
  • Phase monitor 
  • High short circuit current rating (65kA for 208/230/460V, 25kA for 575V)
Indoor Air Quality (IAQ)
  • 2” pre-evaporator filter rack with 2” MERV 8 filters 
  • 4” pre-evaporator filter rack with 4” MERV 8 or 13 filters 
  • Factory-installed UV-C fixture with wiring, disconnect switch, door interlocks, and access door with UV safe view port

Field-Installed Accessories

Indoor Air Quality
  • Return air CO2 sensor 
  • CO2 space sensor 
  • CO2 aspirator box
  • UV-C Emitters
Building Pressure
  • Multi-stage power exhaust with staged building pressure control 
  • High-capacity power exhaust with modulating building pressure control 
  • Barometric relief
Controls
  • Return air CO2 sensor 
  • Smoke detector 
  • Dirty filter switch 
  • Non-communicating space sensors, including temperature and humidity 
  • Communicating space sensors, including temperature and humidity 
  • Space COsensors 
  • Carrier i-Vu® Equipment Touch display 
  • Thermostats
Miscellaneous Options
  • 14-inch Roof Curb
Size Nominal Capacity (Tons) Standard Airflow (CFM) Gross Cooling (BTUH) Heating Capacity Electric (kW) Base Weight* (lbs.) Dimensions* (ft-in)
Low High
020 20 8000 240 36 72 3169 13'-9" 7'-10" 6'-1⅛"
026 25 10000 278 3199
030 30 12000 308
034 35 14000 340
040 40 16000 415 4290 17'-11"
050 50 18000 500 4272
060 60 24000 625 54 108 5793 25'-11"

*Standard chassis/vertical airflow. See your Carrier representative for information and other configurations.