Gemini™ 38AU

Air-Cooled Condensing Units
Puron® Refrigerant (R-410A)

21 to 70 Nominal kW
6 to 20 Nominal Tons

38AUZ – Cooling only, Single-Stage
38AUD – Cooling only, Two-Stage
38AUQ – Heat Pump

The GEMINI™ 38AU series outdoor units, especially when matched with the 40RU series indoor air handlers offer a wide variety of options for your ship or platform HVAC requirements. Whether it’s first cost with the single circuit 38AUZ series or built-in redundancy with the dual refrigerant circuits of the 38AUD series. With epoxy coating options, SS316 stainless steel construction options, and multiple coil options, including E-Coat or Cu/Cu, this series is designed for long dependable operation on your exposed deck or platform. Additionally, these units can be offered to meet hazardous location requirements per ATEX, IECex, or NEC. All GEMINI 38AU Condensing Units and 40RU Fan Coils use environmentally sound Puron® refrigerant. Together, they create a reliable split system that provides easy solutions to a wide range of commercial ship, workboat, and platforms.

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  • Performance Features


  • 38AUQ Heat Pump EERs up to 11.0 and 3.5 COP.
  • 38AUD two cooling stages with EERs from 11.0 to 11.2.
  • 38AUZ single circuit cooling only System EERs from 11.0 to 11.5.
  • ASHRAE 90.1 efficiency compliant.
  • Standard crankcase heater.
  • Compressor vibration isolation.
  • Low ambient temperature control.
  • Unit performance certified in accordance with ARI standard 340/360.

  • Reliability Features

    • High and low-pressure switches.
    • Anti-short cycling protection.
    • Prepainted, galvanized steel cabinets (SS316 construction and coatings also available).
    • Compressor overload protection.
    • Scroll compressor.
    • E-Coat coil protection.

    Installation Features

    • Shipped with Puron® (R-410A) refrigerant partial charge.
    • Single-piece design.
    • Perimeter base rail with forklift slots and lifting holes facilitates rigging.
    • Suitable for mounting on an exposed deck or platform.
    • 24V control circuit transformer permits quick, easy wiring of thermostats.

    Maintenance Features

    • Comfort Alert™ diagnostic board.
    • Powered and non-powered 115-v convenience outlet.
    • Compressor access panel with easy grip handle.
    • Easy starting, no-strip screw feature.
    • Non-fused disconnect switch.

    Standard Limited Warranty

    • 5 years parts only on compressor.
    • One year parts only on all other parts.

    Factory-Installed Options

    • Disconnect switch (non-fused)
    • Condenser coil options:
      • Copper fins / copper tubes:
        • Non-coated
        • E-coated
    • Convenience outlet (115-v)
    • Low ambient temperature Motormaster® control
    • Louvered hail guards
    • Can be built for hazardous locations per ATEX, IECex, or NEC.

    Field-Installed Accessories

    • Low ambient temperature Motormaster control
    • Louvered hail guard
    • Programmable thermostats



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