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Single Package Rooftop
Standard Efficiency
Electric Cooling Units
3 to 12½ Nominal Tons
50TFF Rooftop

50TFF units are one-piece electric cooling only units that are pre-wired and pre-charged with R-22 (HCFC). Electric heat is available as a field-installed accessory. The units are factory tested in the cooling mode.

Performance Features
  • SEERs up to 9.7, EERs to 9.2
  • Single compressors on 3 to 6 ton sizes
  • Dual compressors on 7-1/2 to 12-1/2 ton sizes
  • Convertible from vertical to horizontal airflow for slab mounting
  • Acutrol™ refrigerant metering system
  • Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design. Provides side or center drain
  • Automatic changeover when used with auto-changeover thermostat
  • Low outdoor temperature cooling operation to 25° F
  • Maximum outdoor temperature cooling operation to 115° F
  • Pre-painted exterior panels and primer coated interior panels tested to 500 hours salt spray protection
  • Copper tube, aluminum fin coils with optional corrosion resistant coils
  • Refrigerant filter drier
  • Rated in accordance with ARI Standards 210 (004-006 sizes) and 360 (007-014 sizes)
  • Designed in accordance with Underwriters’ Laboratories Standard 1995
  • Listed by UL and UL, Canada
Maintenance Features
  • Two-inch disposable return air filters
  • Tool-less filter access door
  • Belt drive evaporator-fan motors with adjustable pulleys
Installation Features
  • Thru-the-bottom power entry capability standard
  • Single point electric connections
  • Full perimeter base rail with built-in rigging adapters and fork truck slots
Reliability Features
  • Scroll compressors with internal linebreak overload protection (sizes 007 and 014)
  • 24-volt control circuit protected with resettable circuit breaker
  • Permanently lubricated evaporator-fan motor
  • Totally enclosed condenser motors with permanently lubricated bearings
  • Loss of charge, freeze protection, and high-pressure switches
Standard Limited Warranty
  • 5-year electric heaters
  • 5-year compressor
  • 1-year parts
Factory Installed OptionField Installed Accessory
100% open two-position damperY
25% open two-position damperY
Condenser coil grilleY
Condenser coil hail guard assemblyY
Convenience outlet (load side)Y
Copper fins indoor and outdoor coilY
Copper fins outdoor coilY
E-Coat outdoor coil (aluminum)Y
E-Coat outdoor coil (copper)Y
EconoMi$er IV with corporate controlsYY
EconoMi$er2 (for use with PremierLink™ or third party controls)YY
EconoMi$er2 hinged panel kitY
Electric heatY
Electronic programmable thermostatY
Energy$Recycler™ mounting kitY
Energy$Recycler supply air blowerY
Energy$Recycler transformer for 460 vY
Energy$Recycler transformer for 575 vY
Energy$Recycler unitY
Enthalpy or differential enthalpy sensorY
Fan/filter statusY
High-static motor and driveY
Indoor air quality (CO2) sensorY
Light commercial Thermidistat™ deviceY
Low ambient kitY
Manual outdoor-air damperY
Motormaster® I, II, IV head pressure controlY
Novar controlY
Outdoor air enthalpy sensorY
Outdoor air/return air temperature sensorY
Power exhaust transformer for 575 vY
Power exhaust with barometric reliefY
Pre-coat aluminum fins on outdoor coilY
PremierLink DDC communicating controlYY
Return air enthalpy sensorY
Return air temperature sensorY
Roof curbs (vertical and horizontal discharge)Y
Thermostats and subbasesY
Thru-the-bottom utility connectionsY
Time Guard II control circuit (compressor cycle delay)Y
Unit-mounted non-fused disconnectY
AHRI standard 210/240 unitary small acAHRI standard 340/360 unitary large acC-UL-US

Additional Information
Physical data
Coil Protection
Hinged Panels
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