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    ePARTS makes finding the appropriate spare parts for our products fast and easy. The parts are listed according to the model range and appear as a simple zoomable expanded-view drawing. The software is free of charge. As a direct BITZER customer registered at myBITZER, you benefit from additional advanced features – for example, the ability to view online prices of individual spare parts.

    ePARTS makes finding the appropriate spare parts for our products fast and easy. The parts are listed according to the model range and appear as a simple zoomable expanded-view drawing. The software is free of charge. As a direct BITZER customer registered at myBITZER, you benefit from additional advanced features – for example, the ability to view online prices of individual spare parts.

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Products Screw Compressors CSHP series
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CS PRO series for process heating and district heating networks (R600a)

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CS PRO series for process heating and district heating networks (R600a)

The compact screw compressors in this CS PRO design are specially designed to operate with the natural, low-GWP refrigerant isobutane (R600a). Isobutane is a hydrocarbon that is exceptionally well suited to heat pump applications. These models were developed for process heating systems and district heating networks and allow for liquid outlet temperatures of up to around +95°C. The CS PRO series differs from the standard CS series due to its special electrical accessories, oil charge, safety devices and internal lubrication system.
An enhanced compressor protection device (SE-i1) protects the compressor while operating parameters, such as pressures and temperatures, are monitored and recorded in real time.
As isobutane is a flammable refrigerant in the A3 safety class, these compressors are only available to OEM contractors who have experience working with flammable refrigerants.

Refrigerant

  • Natural hydrocarbon refrigerant isobutane (R600a) with low global warming potential
    • A3 safety class (flammable)

Product range

  • 17 models from 197 to 1120 m³/h at 50 Hz

General applications

  • Process heating and district heating applications with liquid outlet temperatures of up to around +95°C
  • Large-scale commercial and industrial heat pumps

Special requirements

  • Upon request, the CS PRO series can be supplied in a range of ATEX designs for installation in zones with explosion protection requirements.

Submit request
  • Certifications
  • Features
  • Benefits
  • Accessories

  • CE
  • Classification: ‘No sources of ignition in normal operation’
    • In normal operation with no faults, the product and its components contain no sources of ignition that could ignite class A3 flammable refrigerants from Group IIA under IEC 60079.
  • Classification: ‘Durably technically tight’
    • The product has increased tightness pursuant to EN 1127-1 and is therefore considered durably technically tight.
    • If the product contains flammable gases, this classification means that no ATEX zone has to be assumed around the component.
  • EAC

Highlights

  • Designed to operate with the natural hydrocarbon refrigerant isobutane (R600a) with low global warming potential
  • Compact design with integrated oil separator and built-in suction gas cooled motor
  • Outstanding coefficient of performance in full and part load
  • Suitable for speed-controlled operation with an external frequency inverter

Mechatronic capacity control

  • Flanged solenoid valves for ease of control
  • Dual capacity control (single slider) with Vᵢ compensation
  • Stepwise or stepless

Compressor protection device

  • The SE-i1 full sensor kit (FSK) is used as standard. It provides enhanced protective functions including:
    • High and low pressure monitoring – with optional application limit monitoring
    • Oil or discharge gas temperature monitoring with NTC temperature sensors
    • Data logging via the BEST SOFTWARE
    • Communication via Modbus RTU / Bluetooth
    • And much more...

Product versions

  • The compact screw compressors in this CS PRO design are particularly suited for use with the natural hydrocarbon refrigerant isobutane (R600a).
  • For process heating and district heating applications with liquid outlet temperatures of up to around +95°C in large-scale commercial and industrial heat pumps.

Reduced life cycle costs

  • Outstanding efficiency in wide application range
  • Long lifetime due to high robustness and low-vibration design
  • Low maintenance costs due to service-friendly design
  • Global Service network for quick spare part availability all over the world

Reduced development costs

  • Extensive documentation and BITZER know-how for technical support
  • Wide range of matching accessories

Flexibility and reliability

  • Wide application range enables flexible use
    • in a wide range of system configurations
    • with mechanical capacity control or variable-speed drive
  • Optimized for operation with the natural low-GWP hydrocarbon refrigerant Isobutane (R600a)
    • Perfect match of refrigerant and compressor
    • Isobutane is not subject to the European F-Gas Regulation EU 2024/573 and REACH Regulation 1907/2006(PFAS)
  • All compressors are 100% factory-tested

Compressor-related accessories

  • Wide range of motors for different power supply voltages
  • Wide range of suction and discharge bushings and discharge gas shut-off valves
  • Adaptor and shut-off valve for economiser connection

System-related accessories

  • Liquid receivers for use with hydrocarbon refrigerants
    • horizontal liquid receivers: F..P series
    • vertical liquid receivers: FS..P series

  • Certifications

    • CE
    • Classification: ‘No sources of ignition in normal operation’
      • In normal operation with no faults, the product and its components contain no sources of ignition that could ignite class A3 flammable refrigerants from Group IIA under IEC 60079.
    • Classification: ‘Durably technically tight’
      • The product has increased tightness pursuant to EN 1127-1 and is therefore considered durably technically tight.
      • If the product contains flammable gases, this classification means that no ATEX zone has to be assumed around the component.
    • EAC

  • Features

    Highlights

    • Designed to operate with the natural hydrocarbon refrigerant isobutane (R600a) with low global warming potential
    • Compact design with integrated oil separator and built-in suction gas cooled motor
    • Outstanding coefficient of performance in full and part load
    • Suitable for speed-controlled operation with an external frequency inverter

    Mechatronic capacity control

    • Flanged solenoid valves for ease of control
    • Dual capacity control (single slider) with Vᵢ compensation
    • Stepwise or stepless

    Compressor protection device

    • The SE-i1 full sensor kit (FSK) is used as standard. It provides enhanced protective functions including:
      • High and low pressure monitoring – with optional application limit monitoring
      • Oil or discharge gas temperature monitoring with NTC temperature sensors
      • Data logging via the BEST SOFTWARE
      • Communication via Modbus RTU / Bluetooth
      • And much more...

    Product versions

    • The compact screw compressors in this CS PRO design are particularly suited for use with the natural hydrocarbon refrigerant isobutane (R600a).
    • For process heating and district heating applications with liquid outlet temperatures of up to around +95°C in large-scale commercial and industrial heat pumps.

  • Benefits

    Reduced life cycle costs

    • Outstanding efficiency in wide application range
    • Long lifetime due to high robustness and low-vibration design
    • Low maintenance costs due to service-friendly design
    • Global Service network for quick spare part availability all over the world

    Reduced development costs

    • Extensive documentation and BITZER know-how for technical support
    • Wide range of matching accessories

    Flexibility and reliability

    • Wide application range enables flexible use
      • in a wide range of system configurations
      • with mechanical capacity control or variable-speed drive
    • Optimized for operation with the natural low-GWP hydrocarbon refrigerant Isobutane (R600a)
      • Perfect match of refrigerant and compressor
      • Isobutane is not subject to the European F-Gas Regulation EU 2024/573 and REACH Regulation 1907/2006(PFAS)
    • All compressors are 100% factory-tested

  • Accessories

    Compressor-related accessories

    • Wide range of motors for different power supply voltages
    • Wide range of suction and discharge bushings and discharge gas shut-off valves
    • Adaptor and shut-off valve for economiser connection

    System-related accessories

    • Liquid receivers for use with hydrocarbon refrigerants
      • horizontal liquid receivers: F..P series
      • vertical liquid receivers: FS..P series

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