Comfort Cooling

CFT chillers, a variation of the CWB series, have been optimized for operating conditions associated with comfort cooling applications.  With capacities up to 85 tons, CFT chillers operate on 460/3/60 power and are made for outdoor installation.  Among the standard features of this series are hermetic scroll compressors, microchannel aluminum condensers, axial fans, an electronic expansion valve, and a copper-brazed stainless steel evaporator.  A microprocessor controller monitors the refrigerant and fluid circuits, and manages the entire system.  Options include continuous fan speed control for operation in low ambient conditions, condenser e-coating for enhanced corrosion protection, and a variety of pump and tank configurations to suit your installation.

FLUID CIRCUIT

  • Standard models include a stainless steel, brazed plate evaporator, without tank or pump
  • Options include single and dual pumps in a variety of pressures
  • Available with insulated tank in carbon steel
  • Fluid differential pressure switch protects evaporator against low-
    flow condition
  • Fluid pressure gauge (pump discharge pressure)
  • Ability to use glycol mixtures up to 50%

REFRIGERATION CIRCUIT

  • Manufactured with high-quality materials following rigorous brazing procedures and conforming to international standards (PED 2014/68/EU)
  • Environmentally friendly R410A refrigerant
  • Refrigerant sight glass with moisture indicator and filter-dryer
  • Electronic expansion valve and liquid line solenoid valve
  • High and low pressure transducers and switches
  • High and low pressure gauges
  • High and low pressure access fittings for maintenance and troubleshooting

COMPRESSOR

  • Tandem, hermetic scroll compressors chosen for reliability
    and efficiency
  • Multiple compressors for energy efficiency and low starting amps
  • Mounted on rubber isolators for noise reduction
  • Scroll compressors are especially quiet and can handle liquid return without damage
  • Protected against reverse rotation by an electronic phase monitor
  • Crankcase heater prevents liquid slugging on start-up

EVAPORATOR

  • Stainless steel, brazed plate evaporators are compact and highly efficient
  • Evaporators are protected against freezing by the microprocessor controller
  • Evaporator has two refrigerant circuits and a single fluid circuit
    (CFT230 to CFT300)

CONDENSER

  • Microchannel design is compact and highly efficient
  • All-aluminum construction eliminates the risk of galvanic corrosion
  • Variable-speed fan allows operation over a wide ambient
    temperature range (Option)

ELECTRICAL PANEL

  • Manufactured in compliance with international standards (EN 60204) using UL-recognized components
  • Electrical cabinet constructed of powder-coated galvanized steel
  • Disconnect switch with door lock prevents access to panel when energized

MICROPROCESSOR CONTROLLER

  • Optimizes unit performance and maintains fluid temperature
  • Controls and displays the fluid temperature
  • Turns the compressors on and off while protecting against short cycling
  • Turns the pump(s) on and off; equalizes pump operating times
    (double pump models)
  • Regulates condenser fan speed (option)
  • Protected by a watertight cover
  • Displays key operating parameters and the following alarm conditions
    • High and low refrigerant pressure
    • High refrigerant discharge temperature
    • Low fluid differential pressure
    • Incorrect phase sequence
    • Compressor, pump, or fan motor protector tripped
    • Temperature probe or pressure sensor failure
    • High fluid temperature
    • Evaporator anti-freeze
    • Electronic expansion valve fault

UNIT CONSTRUCTION AND MAINTENANCE

  • Cabinet frame and panels are powder-coated and suitable for outdoor installation
  • Panels are easily removed, providing convenient access for maintenance and repair
  • All fasteners are stainless or zinc-plated steel for corrosion resistance
  • Protection to IP54 standard on all models; suitable for outdoor installation
  • Designed for ease of operation and maintenance

FACTORY TESTING OF EVERY CFT UNIT

  • Pressurization and helium leak detection of refrigeration circuit
  • Pressurization and leak testing of fluid circuit
  • Chiller performance and power consumption at full load
  • Proper operation of all controls, safety devices, and alarms
  • Electrical tests according to international standards (EN 60204)