Air Handlers & Fan Coils

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Ellis & Watts designs, qualifies, manufactures, and tests custom air handlers (AHUs) and fan coils to provide conditioned air for mission-critical comfort, environmental, and process environments where meeting design temperature, humidity, and/or sound requirements are crucial.

Ellis & Watts can provide AHUs and Fan Coils with the following features and capabilities - CLICK TO SEE FULL LIST

  • varying housing thicknesses and insulation types
  • variety of fan types, configurations, and sizes
  • wide range of supply air temperatures
  • analog, relay-based controls to address qualification, cyber security, or EMI/RFI concerns or digital control systems

Specific capabilities for AHUs and Fan Coils include - CLICK TO SEE FULL LIST

  • flexible dimensions and component selection to optimize performance, efficiency, ease of service, and life-cycle cost
  • operation in extreme ambient temperatures
  • up to 60 inches w.g. static pressure
  • wide choice of materials of construction available to optimize structural integrity, corrosion resistance, weight, and cost
  • stringent air leakage requirements
  • seismic qualification per IEEE 344
  • environmental qualification per IEEE 323
  • various power supply, piping and control options
  • designs for hazardous duty applications (explosion proof)
  • EMI/RFI suppression and verifications testing
  • portable or mobile designs, including shock and vibration isolation
  • factory performance testing at full and part-load conditions to document compliance and assure proper operation
  • self-contained packaged or split-system designs
  • modular construction to address on-site transportation, rigging, and installation constraints

Ellis & Watts understands that some projects require strict code compliance and has the demonstrated ability to conform to the following codes, among others - CLICK TO SEE FULL LIST

  • ASME NQA-1
  • 10CFR50 Appendix B
  • Heat Exchangers to ASME Section VIII or ASME Section III
  • Coils (Refrigerant & Electric) to ASME AG-1 Section CA
  • Fans to ASME AG-1 Section BA
  • Motors to ASME AG-1, IEEE 323, IEEE 334, IEEE 344, and NEMA MG-1
  • Motor wiring to IEEE 383
  • Motor insulation to IEEE 117
  • Filters to ASME AG-1 Section FB & FC
  • Filter Mounting Frames to ASME AG-1 Section FG
  • Dampers to ASME AG-1 Section DA
  • UL 555 for Smoke and Fire Dampers
  • Damper Actuators to IEEE 382
  • Housing to ASME AG-1 Section HA
  • Instruments to ASME AG-1 Section IA
  • Compliance to IEEE 7-4.3.2 Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations
  • Compliance to IEEE 603 Standard Criteria for Safety Systems for Nuclear Power Generating Systems
  • Compliance to IEEE 1012 Standard for Software Verification and Validation

Past projects in which Ellis & Watts successfully met stringent air handling system compliance requirements include - CLICK TO SEE FULL LIST

  • V.C. Summer NPP – USA
  • Vogtle NPP – USA
  • Cernavoda NPP – Romania
  • MOX Fuel Fabrication Facility – USA
  • Palisades NPP – USA
  • US Army