Water Cooled Central Chillers

Berg’s water cooled central chiller industrial refrigeration systems are available in single or multiple compressor / refrigeration circuits, using single efficient semi-hermetic or scroll compressors as standard.

  • Features and Benefits
  • Technical Specifications
  • Layout Pictorial and Specifications
Water Cooled Central Chillers

With options to suit your needs, including open-drive or screw compressors, industrial water chillers are delivered pre-wired, pre-piped and factory tested.

Sized from 10 to 300 tons or more and coupled with a pump tank set and a cooling tower, Berg water cooled industrial refrigeration units are manufactured for years of economical and reliable service.

Capacity

  • Compressor (HP) 20 – 120 or more
  • Cooling capacity (Refrigeration tons) 15 to 300 or more

Compressor Options Semi Hermetic Compressor (WCS)

  • Semi-hermetic reciprocating compressor
  • Suction gas cooled motor
  • Suction and discharge stop valve
  • Step capacity control
  • Crankcase heater with current sensing relay
  • Suction and discharge pressure transmitter
  • High pressure switch
  • Hot gas capacity control

Open Type Compressor (WCO)

  • Suction and discharge stop valve
  • Step capacity control
  • Drive coupling and C-flange adaptor/coupling guard
  • Suction and discharge pressure transmitter
  • Discharge high temperature cut-out
  • High pressure switch
  • Oil flow switch
  • Oil separator
  • TEFC motor certified for hazardous environments
  • Hot gas capacity control

Scroll Compressor (WCZ)

  • Suction gas cooled motor
  • Suction and discharge stop valve
  • High pressure switch
  • Crankcase heater with current sensing relay
  • Hot gas capacity control

Screw Compressor (WCQ)

  • Suction gas cooled motor
  • Suction and discharge stop valve
  • Slide valve capacity control
  • Integral oil separator with heater and current sensing relay
  • Crankcase heater with current sensing relay
  • Suction and discharge pressure transmitter
  • High pressure switch
  • Hot gas capacity control

Evaporator

  • High efficiency copper brazed stainless steel plate construction
  • Designed and constructed in accordance with ASME code

Or

  • High efficiency shell and tube construction
  • Carbon steel shell (water side)
  • Copper tube with inner fin (refrigerant side)
  • Vessel designed and constructed in accordance with ASME code

Other materials of construction are available upon request.

 

Chiller Vessel

  • High efficiency shell and tube construction
  • Coded vessel steel shell on water side
  • Copper tube with inner fin on refrigerant side

Water-Cooled Condenser

  • Heavy construction while maintaining maximum heat transfer
  • Steel shell on refrigerant side
  • Copper tubing with outer fin on water side
  • Removable heads for cleaning

Frame

  • Frame manufactured from heavy gauge structured steel tube with welded construction.

Safety Controls

Tested under load conditions prior to shipment All safety controls are factory set and checked

  • Freeze-up controls
  • High and low refrigerant pressure controls
  • Compressor motor overload protection
  • Tank low-level cutout (glycol units)
  • Oil pressure safety control
  • Refrigerant pressure relief valve

Electrical

  • 460 / 575 / 230 / 380 Volts 60 / 50 Hz
  • 120 / 240 Volt single phase control voltage
  • Microprocessor controller
  • Operating and fail lights
  • UL or CSA approved components

Central Control Electrical Panel

A custom electrical control panel allows one point hookup and may include:

  • HMI ( Human Interface Device ) touchscreens
  • PLC ( Programable Logic Control )
  • SCADA ( Supervisory Control And Data Acquisition ) Communication Systems
  • 24/7 alarm reporting to cell phones

All pump starters, fuses, disconnect, control voltage transformer, run and fail lights, are housed in a common NEMA rated panel.

Central Thermostat Control System

This system is used to control chiller units in a multiple central industrial chilling system. The temperature controller is located at the Berg tank and senses the process water temperature. The process water temperature is maintained by cycling the chiller units.

Image of Cooling Mixing Tank

Image of Cooling Water System Engineering

 

 

Custom Engineered

Berg engineers work with you to custom design the water cooled central chiller that will meet your economic and functional needs.

24/7 Technical & Service Support

Berg is available to you 24/7 for technical and service support.

Energy Efficient

All of Berg’s central chillers come equipped with high system efficiency features.