Hitachi Cooling & Heating / SERIES OVERVIEW

Hitachi WZ Water-Cooled Screw Chillers

Water-cooled twin-screw chiller

Brand
Hitachi Cooling & Heating
Series
WZ
Equipment category
Chillers
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Product overview

WZ is a water-cooled twin-screw chiller series with R134a model references. The 12 listed RCUF selections have published cooling capacities from 549 to 1,830 kW. Performance, water flow, electrical current and installation data are retained per model. WZ has its own selection table; similar capacity codes in WV, WVP, WZP or WZX do not make those models interchangeable.

Key technical specifications

Match the complete model and configuration to your design duty. Compare ratings only at the stated water and ambient conditions; then send the model reference, quantity and project requirements for review.

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WZ — cooling performance

Fixed-speed water-cooled twin-screw RCUF references; separate from WV, WVP, WZP and WZX.

WZ — cooling performance. Fixed-speed water-cooled twin-screw RCUF references; separate from WV, WVP, WZP and WZX.
Model referenceCooling capacity(kW)Cooling capacity (source)(RT)Cooling input power(kW)Cooling COP(W/W)Capacity control (%)Rated current(A)Maximum current(A)Starting current by compressor (A)Compressor quantity(units)
RCUF155WZRequest a Quote549156.198.215.5925~1001662493921
RCUF170WZRequest a Quote593168.7106.15.58925~1001792693921
RCUF180WZRequest a Quote633180113.35.58725~1001912875091
RCUF200WZRequest a Quote668190119.55.5925~1002023035091
RCUF210WZRequest a Quote732208.2130.95.59225~1002213315091
RCUF260WZRequest a Quote915260.2163.75.58925~1002764155991
RCUF280WZRequest a Quote988281176.75.59125~1002984485991
RCUF310WZRequest a Quote1098312.3196.45.59125~100332498392/3922
RCUF365WZRequest a Quote1281364.3221.25.79125~100379560509/3922
RCUF420WZRequest a Quote1464416.4252.85.79125~100426640509/5092
RCUF470WZRequest a Quote1647468.4284.55.78925~100480720599/5092
RCUF520WZRequest a Quote1830520.5316.15.78925~100534800599/5992
  • Cooling: leaving chilled water 7 °C at 0.172 m³/(h·kW); entering condenser water 30 °C at 0.215 m³/(h·kW). Water-side fouling factors: evaporator 0.018 m²·°C/kW; condenser 0.044 m²·°C/kW. Printed RT and kW are retained separately.
  • R134a; main supply 380 V / 3 phase / 50 Hz; control supply 220 V / 1 phase / 50 Hz. Chilled-water leaving range 4–15 °C; condenser-water leaving range 22–40 °C.
  • Source: WZ brochure, print code Z0050013-260716, specification tables. Confirm duty at the actual project conditions.

WZ — water-side and installation data

Source weights in kg; dimensions in mm.

WZ — water-side and installation data. Source weights in kg; dimensions in mm.
Model referenceEvaporator water flow(m³/h)Evaporator pressure drop(kPa)Evaporator connectionCondenser water flow(m³/h)Condenser pressure drop(kPa)Condenser connectionNet weight(kg)Length(mm)Width(mm)Height(mm)Operating weight(kg)
RCUF155WZRequest a Quote94.4150.2DN15011887.8DN15035003320170022583824
RCUF170WZRequest a Quote10251DN150127.589DN15036003320170022583942
RCUF180WZRequest a Quote108.951DN150136.189DN15037003280170022584052
RCUF200WZRequest a Quote114.951DN150134.689DN15037253280170022584093
RCUF210WZRequest a Quote125.950.2DN150157.490.1DN15037603320170022584153
RCUF260WZRequest a Quote157.450.2DN150196.792.3DN15039303320170022584393
RCUF280WZRequest a Quote169.952DN150212.494DN15040303280170022584521
RCUF310WZRequest a Quote188.959.2DN200236.187.8DN20064704693176623187005
RCUF365WZRequest a Quote220.361.2DN200275.491DN20067704693176623187365
RCUF420WZRequest a Quote251.863.2DN200314.793.3DN20070704693176623187723
RCUF470WZRequest a Quote283.365.3DN200354.195.6DN20073204693176623188037
RCUF520WZRequest a Quote314.767.3DN200393.497.8DN20075704693176623188350
  • Cooling: leaving chilled water 7 °C at 0.172 m³/(h·kW); entering condenser water 30 °C at 0.215 m³/(h·kW). Water-side fouling factors: evaporator 0.018 m²·°C/kW; condenser 0.044 m²·°C/kW. Printed RT and kW are retained separately.
  • R134a; main supply 380 V / 3 phase / 50 Hz; control supply 220 V / 1 phase / 50 Hz. Chilled-water leaving range 4–15 °C; condenser-water leaving range 22–40 °C.
  • Source: WZ brochure, print code Z0050013-260716, specification tables. Confirm duty at the actual project conditions.

Key configuration options

  • Select the required cooling duty at the actual chilled-water and condenser-water temperatures.
  • One- and two-compressor selections have their own current and starting-current entries; slash-separated values are not summed.
  • Main power 380 V / 3 phase / 50 Hz; control power 220 V / 1 phase / 50 Hz. Confirm water connections, pressure rating and access before ordering.
  • Manufacturer reference: WZ brochure, print code Z0050013-260716.

Applications

  • Central chilled-water plants for large commercial buildings and manufacturing facilities.
  • Industrial cooling equipment procurement based on the required water temperatures, load and site conditions.

Information for equipment selection

  • Cooling duty, load profile and required quantity; complete model reference where known.
  • Chilled-water and condenser-water entering / leaving temperatures, flows and water-side pressure requirements.
  • Voltage, phase, frequency, starting method and plant-room access / lifting constraints.
  • Equipment schedule or BOQ, project location, destination country and requested delivery date.

Application suitability requires a review of the project requirements and selected model.

Project equipment procurement

Delta M&E reviews equipment requirements, manufacturer selections and supply arrangements for each inquiry. Send your BOQ or equipment schedule to discuss the required model, documentation and destination.

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Technical documents

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Related series

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Product reference: Hitachi WZ Water-Cooled Screw Chillers

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