Hitachi Cooling & Heating / SERIES OVERVIEW

Hitachi WZP / WZ Water-Source Screw Heat Pumps

Water / ground-source twin-screw heat pump

Brand
Hitachi Cooling & Heating
Series
WZP / WZ Water-Source
Equipment category
Heat Pumps
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Hitachi WZP / WZ water-source screw heat pump series

Product overview

WZP and WZ water-source heat pumps use twin-screw compressors and R134a. Their RHUF references are separate from the RCUF cooling-only chillers. This range includes standard and Q configurations with their own heating input, water flow and electrical data. Selection starts with the available source-water conditions and the required chilled-water or hot-water duty.

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.

Scroll each table horizontally to compare all columns. Model references remain visible as you scroll.

WZP — cooling and heating performance

RHUF water / ground-source screw heat-pump selections; R134a.

WZP — cooling and heating performance. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceCooling capacity(kW)Cooling input(kW)Heating capacity(kW)Heating input(kW)Capacity control (%)Maximum current(A)Starting currentCompressors(count)
RHUF50WZPRequest a Quote200.630.39179.141.8225-100129211 A1
RHUF65WZPRequest a Quote251.338.08224.452.425-100161211 A1
RHUF80WZPRequest a Quote314.747.6928165.6225-100202177/177 A2
RHUF110WZPRequest a Quote404.462.43362.785.9125-100260211/211 A2
RHUF130WZPRequest a Quote504.977.93452.7107.225-100324211/211 A2
RHUF150WZPRequest a Quote574.482.94572.7116.425-100230392 A1
RHUF156WZPRequest a Quote564.482.67565.4121.725-100230392 A1
RHUF200WZPRequest a Quote765.9110.6763.7155.225-100306509 A1
RHUF211WZPRequest a Quote752.5110.7754.6163.125-100308509 A1
RHUF250WZPRequest a Quote957.3138.2954.5193.925-100382599 A1
RHUF261WZPRequest a Quote940.7138.2942.9203.525-100384599 A1
RHUF300WZPRequest a Quote1149163.31145232.725-100460392/392 A2
RHUF311WZPRequest a Quote1129162.81144247.325-100452392/392 A2
RHUF366WZPRequest a Quote1317187.81331285.225-100522509/392 A2
RHUF421WZPRequest a Quote1505213.91521324.925-100594509/509 A2
RHUF471WZPRequest a Quote16932411711366.125-100670599/509 A2
RHUF521WZPRequest a Quote18812671900405.525-100742599/599 A2
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZP — water-side and installation data

RHUF water / ground-source screw heat-pump selections; R134a.

WZP — water-side and installation data. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceChilled-water flow(m³/h)Chilled-water pressure drop(kPa)Heat-source-water flow(m³/h)Heat-source-water pressure drop(kPa)Evaporator flangeCondenser-water flow(m³/h)Condenser-water pressure drop(kPa)Hot-water flow(m³/h)Hot-water pressure drop(kPa)Condenser flangeNet weight(kg)Length(mm)Width(mm)Height(mm)
RHUF50WZPRequest a Quote34.58323.6139DN6539.735430.8133DN651800220013501600
RHUF65WZPRequest a Quote43.228429.5840DN6549.775638.634DN651880220013501600
RHUF80WZPRequest a Quote54.136537.0531DN12562.335448.3333DN1253290400013601600
RHUF110WZPRequest a Quote69.566747.6132DN12580.295562.3833DN1253450400013601600
RHUF130WZPRequest a Quote86.846959.4332DN125100.25577.8633DN1253630400013601600
RHUF150WZPRequest a Quote98.85578.4835DN150113.15498.541DN1504070337317152311
RHUF156WZPRequest a Quote97.085376.3233DN150111.37597.2557DN1503540332017002258
RHUF200WZPRequest a Quote131.755104.735DN150150.854131.441DN1504400337317152311
RHUF211WZPRequest a Quote129.453101.733DN150148.577129.859DN1503820332017002258
RHUF250WZPRequest a Quote164.755130.835DN150188.454164.241DN1504680337317152311
RHUF261WZPRequest a Quote161.853127.233DN150185.679162.261DN1504040332017002258
RHUF300WZPRequest a Quote197.664156.940DN200225.753196.941DN2008560480419492419
RHUF311WZPRequest a Quote194.271154.245DN200222.272196.857DN2006650467217662318
RHUF366WZPRequest a Quote226.573179.946DN200258.874228.958DN2006950467217662318
RHUF421WZPRequest a Quote258.975205.748DN200295.776261.660DN2007250467217662318
RHUF471WZPRequest a Quote291.277231.349DN200332.678294.361DN2007500467217662318
RHUF521WZPRequest a Quote323.580257.150DN200369.580326.863DN2007750467217662318
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZP-Q — cooling and heating performance

RHUF water / ground-source screw heat-pump selections; R134a.

WZP-Q — cooling and heating performance. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceCooling capacity(kW)Cooling input(kW)Heating capacity(kW)Heating input(kW)Capacity control (%)Maximum current(A)Starting currentCompressors(count)
RHUF150WZP-QRequest a Quote574.584.58580.3118.725-100299599 A1
RHUF156WZP-QRequest a Quote564.484.21525.8123.925-100309599 A1
RHUF200WZP-QRequest a Quote766112.8773.7158.225-100398779 A1
RHUF211WZP-QRequest a Quote752.6112.8701.816625-100414779 A1
RHUF300WZP-QRequest a Quote1149166.51157233.625-100598599/599 A2
RHUF311WZP-QRequest a Quote1129165.81067251.825-100610599/599 A2
RHUF366WZP-QRequest a Quote1317191.31242290.525-100703779/599 A2
RHUF421WZP-QRequest a Quote1505217.91418330.925-100800779/779 A2
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZP-Q — water-side and installation data

RHUF water / ground-source screw heat-pump selections; R134a.

WZP-Q — water-side and installation data. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceChilled-water flow(m³/h)Chilled-water pressure drop(kPa)Heat-source-water flow(m³/h)Heat-source-water pressure drop(kPa)Evaporator flangeCondenser-water flow(m³/h)Condenser-water pressure drop(kPa)Hot-water flow(m³/h)Hot-water pressure drop(kPa)Condenser flangeNet weight(kg)Length(mm)Width(mm)Height(mm)
RHUF150WZP-QRequest a Quote98.815579.435DN150113.45499.8142DN1504155337317152311
RHUF156WZP-QRequest a Quote97.085369.1327DN150111.67590.4449DN1503625332017002258
RHUF200WZP-QRequest a Quote131.855105.935DN150151.254133.142DN1504475337317152311
RHUF211WZP-QRequest a Quote129.45392.1627DN150148.877120.751DN1503895332017002258
RHUF300WZP-QRequest a Quote197.664158.841DN200226.35319941DN2008730480419492419
RHUF311WZP-QRequest a Quote194.267140.235DN200222.771183.549DN2006820467217662318
RHUF366WZP-QRequest a Quote226.573163.738DN200259.473213.650DN2007110467217662318
RHUF421WZP-QRequest a Quote258.97118737DN200296.375243.951DN2007400467217662318
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZ — cooling and heating performance

RHUF water / ground-source screw heat-pump selections; R134a.

WZ — cooling and heating performance. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceCooling capacity(kW)Cooling input(kW)Heating capacity(kW)Heating input(kW)Capacity control (%)Maximum current(A)Starting currentCompressors(count)
RHUF155WZRequest a Quote564.587.11557.2123.525-100244392 A1
RHUF210WZRequest a Quote752.7116.1742.8164.725-100326509 A1
RHUF260WZRequest a Quote940.9145.2928.6205.925-100407599 A1
RHUF310WZRequest a Quote1129174.21117249.625-100488392/392 A2
RHUF365WZRequest a Quote1317196.31293281.425-100550509/392 A2
RHUF420WZRequest a Quote1505224.41478321.625-100628509/509 A2
RHUF470WZRequest a Quote1693252.51663361.925-100708599/509 A2
RHUF520WZRequest a Quote1881280.61847402.125-100786599/599 A2
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZ — water-side and installation data

RHUF water / ground-source screw heat-pump selections; R134a.

WZ — water-side and installation data. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceChilled-water flow(m³/h)Chilled-water pressure drop(kPa)Heat-source-water flow(m³/h)Heat-source-water pressure drop(kPa)Evaporator flangeCondenser-water flow(m³/h)Condenser-water pressure drop(kPa)Hot-water flow(m³/h)Hot-water pressure drop(kPa)Condenser flangeNet weight(kg)Length(mm)Width(mm)Height(mm)
RHUF155WZRequest a Quote97.095374.631DN150112.17995.8458DN1503500332017002258
RHUF210WZRequest a Quote129.55399.4331DN150149.481127.859DN1503760332017002258
RHUF260WZRequest a Quote161.853124.331DN150186.883159.761DN1503930332017002258
RHUF310WZRequest a Quote194.263149.237DN200224.279192.158DN2006470469317662318
RHUF365WZRequest a Quote226.56517438DN200260.381222.459DN2006770469317662318
RHUF420WZRequest a Quote258.967198.939DN200297.583254.261DN2007070469317662318
RHUF470WZRequest a Quote291.269223.841DN200334.68528662DN2007320469317662318
RHUF520WZRequest a Quote323.571248.542DN200371.887317.764DN2007570469317662318
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZ-Q — cooling and heating performance

RHUF water / ground-source screw heat-pump selections; R134a.

WZ-Q — cooling and heating performance. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceCooling capacity(kW)Cooling input(kW)Heating capacity(kW)Heating input(kW)Capacity control (%)Maximum current(A)Starting currentCompressors(count)
RHUF155WZ-QRequest a Quote564.588.82522.2128.925-100326599 A1
RHUF210WZ-QRequest a Quote752.7118.4696.2171.825-100435779 A1
RHUF310WZ-QRequest a Quote1129177.61047260.425-100652599/599 A2
RHUF365WZ-QRequest a Quote1317200.21211293.525-100735779/599 A2
RHUF420WZ-QRequest a Quote1505228.81384335.425-100840779/779 A2
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

WZ-Q — water-side and installation data

RHUF water / ground-source screw heat-pump selections; R134a.

WZ-Q — water-side and installation data. RHUF water / ground-source screw heat-pump selections; R134a.
Model referenceChilled-water flow(m³/h)Chilled-water pressure drop(kPa)Heat-source-water flow(m³/h)Heat-source-water pressure drop(kPa)Evaporator flangeCondenser-water flow(m³/h)Condenser-water pressure drop(kPa)Hot-water flow(m³/h)Hot-water pressure drop(kPa)Condenser flangeNet weight(kg)Length(mm)Width(mm)Height(mm)
RHUF155WZ-QRequest a Quote97.095367.6526DN150112.47989.8251DN1503585332017002258
RHUF210WZ-QRequest a Quote129.55390.226DN150149.881119.752DN1503835332017002258
RHUF310WZ-QRequest a Quote194.263135.330DN200224.779180.151DN2006640469317662318
RHUF365WZ-QRequest a Quote226.565157.831DN20026181208.352DN2006930469317662318
RHUF420WZ-QRequest a Quote258.967180.432DN200298.28323853DN2007220469317662318
  • Cooling: chilled water entering / leaving 12 / 7 °C; condenser water entering / leaving 25 / 30 °C. Heating: source water entering / leaving 10 / 5 °C; hot water entering / leaving 40 / 45 °C.
  • Evaporator and condenser fouling factors: 0.018 and 0.044 m²·°C/kW. Main power 380 V / 3 phase / 50 Hz; control 220 V / 1 phase / 50 Hz. R134a; twin-screw compressors.
  • Starting-current values are printed in A; slash-separated compressor values are not summed. Q selections have separate ratings and operating limits.
  • Manufacturer reference: Z0050069-260903; physical PDF page 6.

Key configuration options

  • Standard WZP and WZ, and the separate WZP-Q / WZ-Q configurations, retain individual performance and hydraulic tables.
  • Source operating limits: RHUF50–130WZP chilled-water leaving 5–20 °C; the other listed groups 4–15 °C. Condenser-water leaving 22–40 °C.
  • Hot-water leaving limits: RHUF50–130WZP and the listed Q groups 35–60 °C; RHUF150–521WZP and RHUF155–520WZ standard groups 35–45 °C. A 60 °C limit does not assign a 60 °C capacity to every model.
  • Water quality, source-side heat exchanger arrangement, pressure rating and ground-loop design conditions require project review.

Applications

  • Commercial and industrial heating / cooling projects with a suitable water or ground-loop heat source.
  • Project equipment selection based on source-water availability, load profile and hydraulic requirements.

Information for equipment selection

  • Complete RHUF model, standard or Q configuration and required quantity.
  • Cooling / heating loads; source-water, chilled-water and hot-water entering / leaving temperatures and flows.
  • Water quality, pressure rating, power supply, plant-room access and destination country.

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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Product reference: Hitachi WZP / WZ Water-Source Screw Heat Pumps

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