Desert Master™ 50TJM

Single-Packaged Rooftop
Puron® (R-410A) Refrigerant

15.0 to 27.0 nominal tons<>/p

The 50TJM units are single side discharge rooftop cooling unit utilizing electric heat as an option. Units are prewired, pre-charged with R-410A refrigerant, and tested at the factory. These units can be placed on the side of a building or can be placed on a roof without roof curbs. Each unit is designed to occupy a minimal space. Piping and drain connections are readily accessible.

Carrier’s Package Rooftop Unit software makes selecting and optimizing the 50TJM easy.

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Description

Features

  • ASHRAE 90.1 Compliant
  • EER’s up to 10.9
  • TXV refrigerant metering device
  • Two independent refrigerant circuits, each with a scroll compressor
  • Low outdoor temperature cooling operation down to 40°F
  • Cooling operating range up to 125 °F (51.6°C)
  • Liquid filter drier standard on each circuit
  • Fresh air intake capability
  • Non-corrosive sloped condensate drain pan in accordance to ASHRAE 62 standard
  • Thermally protected and permanently lubricated condenser and evaporator fan motors
  • Angle type return air section with washable type filters

Environmentally Responsible Refrigerant Choice

R-410A refrigerant is:

  • A chlorine-free refrigerant from the HFC group
  • Has zero ozone depletion potential
  • Thermally efficient and provides High EER (energy efficiency), COP, and part load efficiencies

Superior Reliability, Efficiency and Safety

  • Exceptional endurance tests
    • Painted panels tested to ASTM B-117 500 hours salt spray protection
    • Pre-coated fin condenser coil for extra corrosion protection
  • Compressor Protection:
    • High and low pressure cutouts
    • Compressor lockout
    • Phase protection relay
    • Crankcase heaters are standard for all units
    • Internal over temperature protection
    • Freeze protection
  • Low vibration design:
    • Leak-tight refrigerant circuit
    • Brazed refrigerant connections for increased leak tightness
    • Low-noise scroll compressors with low vibration levels
  • Control circuit protected by circuit breaker
  • Thermally protected and permanently lubricated condenser and evaporator fan motors
  • Angle type return air section with washable type filters
  • Transformer for safe 24v control circuit supply included
  • State-of-art scroll compressor technology
  • Dual, electrically and mechanically independent refrigerant circuit
  • Double skin construction, Insulated cabinet

Installation Features

  • Single point electrical service entry
  • Side discharge application
  • No roof curb needed
  • Side by Side supply and return air
  • Separate panel for control box

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