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Air to Water Heat Pump

SolaX Thermal R290 Series

The SolaX air-to-water heat pump integrates PV and ESS compatibility, intelligent temperature control, and offers three indoor configuration options: Hydraulic Integrated Unit, Hydraulic Unit, or Control Unit.  Designed with European aesthetics and smart user interaction, it's the perfect solution for modern energy needs.

Product Advantage

The SolaX air-to-water heat pump integrates PV and ESS compatibility, intelligent temperature control, and offers three indoor configuration options: Hydraulic Integrated Unit, Hydraulic Unit, or Control Unit.  Designed with European aesthetics and smart user interaction, it's the perfect solution for modern energy needs.

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Eco-Friendly

  • R290 natural refrigerant, low GWP and a low-carbon lifestyle

  • Extremely quiet operation with low noise level


Intelligent Control

  • Smart App control supports remote monitoring, operation, and OTA updates

  • Brushless DC motor enables stepless speed regulation


High Performance

  • Integrated with PV and ESS to maximize green energy self-consumption

  • SCOP level: A+++

  • Maximum leaving water temperature of 80°C

Flexibility

  • Available in 5 capacity sizes (8 to 16 kW), suitable for renovations and large new buildings

  • Highly interoperable, SG ready, Modbus TCP/RTU supported

  • Heating + Cooling + Domestic Hot Water (DHW)

Product Parameters

  • Indoor Unit
  • Outdoor Unit
  • Control Unit STN1-C01
  • Hydraulic Unit STN1-C02
  • Hydraulic Unit STN3-C02
  • Hydraulic Integrated Unit STN1-C03
  • Hydraulic Integrated Unit STN3-C03
  • Control Unit STN1-C01
    Control Unit STN1-C01
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      Rated current0.1A


    • Interface & Communication
      User interface4 inch high-resolution touch panel
      CommunicationWiFi/Ethernet/RS485


    • Installation & Mechanical Specifications
      InstallationWall mounting
      Dimensions (W × H × D)340 × 400 × 80 mm
      Weight6.5 kg


  • Control Unit STN1-C01
    Hydraulic Unit STN1-C02
    • Electrical Specifications
      Power supply220~240 V / 1N~ / 50 Hz
      Rated current39.5 A


    • Interface & Communication
      User interface4 inch high-resolution touch panel
      CommunicationWiFi/Ethernet/RS485


    • Installation & Mechanical Specifications
      InstallationWall mounting
      Dimensions (W × H × D)420x700x265 mm
      Weight33 kg


  • Control Unit STN3-C02
    Hydraulic Unit STN3-C02
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      Rated current13.5A


    • Interface & Communication
      User interface4 inch high-resolution touch panel
      CommunicationWiFi/Ethernet/RS485


    • Installation & Mechanical Specifications
      InstallationWall mounting
      Dimensions (W × H × D)420x700x265 mm
      Weight33 kg


  • Hydraulic Integrated Unit STN1-C03
    Hydraulic Integrated Unit STN1-C03
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      Rated current52.3 A


    • Interface & Communication
      User interface4 inch high-resolution touch panel
      CommunicationWiFi/Ethernet/RS485


    • Installation & Mechanical Specifications
      InstallationFloor stand
      Dimensions (W × H × D)595 × 1875 × 700 mm
      Weight186 kg


  • Hydraulic Integrated Unit STN3-C03
    Hydraulic Integrated Unit STN3-C03
    • Electrical Specifications
      Power supply380~415V/3N~/50HZ
      Rated current17.5 A


    • Interface & Communication
      User interface4 inch high-resolution touch panel
      CommunicationWiFi/Ethernet/RS485


    • Installation & Mechanical Specifications
      InstallationFloor stand
      Dimensions (W × H × D)595x1875x700 mm
      Weight186 kg


  • STU1-C08R290
  • STU1-C10R290
  • STU1-C12R290
  • STU1-C14R290
  • STU1-C16R290
  • STU3-C08R290
  • STU3-C10R290
  • STU3-C12R290
  • STU3-C14R290
  • STU3-C16R290
  • STU1-C08R290
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.44
      SCOP-LWT at 55°C4.12
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.2 kg
      Sound pressure level at 1m
      		35 dB(A)
      Sound pressure level at 3m
      		32 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight140kg


  • STU1-C10R290
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.30
      SCOP-LWT at 55°C4.07
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.2 kg
      Sound pressure level at 1m
      		35 dB(A)
      Sound pressure level at 3m
      		32 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight140kg


  • STU1-C12R290
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.07
      SCOP-LWT at 55°C3.89
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		37 dB(A)
      Sound pressure level at 3m
      		34 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight154kg


  • STU1-C14R290
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      SCOP-LWT at 35°C
      		4.94
      SCOP-LWT at 55°C3.84
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		38 dB(A)
      Sound pressure level at 3m
      		35 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight154kg


  • STU1-C16R290
    • Electrical Specifications
      Power supply220 ~ 240 V / 1N~ / 50 Hz
      SCOP-LWT at 35°C
      		4.90
      SCOP-LWT at 55°C3.83
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		38 dB(A)
      Sound pressure level at 3m
      		35 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight154kg


  • STU3-C08R290
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.44
      SCOP-LWT at 55°C4.12
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.2 kg
      Sound pressure level at 1m
      		35 dB(A)
      Sound pressure level at 3m
      		32 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight151kg


  • STU3-C10R290
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.30
      SCOP-LWT at 55°C4.07
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.2 kg
      Sound pressure level at 1m
      		35 dB(A)
      Sound pressure level at 3m
      		32 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight151kg


  • STU3-C12R290
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      SCOP-LWT at 35°C
      		5.07
      SCOP-LWT at 55°C3.89
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		37 dB(A)
      Sound pressure level at 3m
      		34 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight165kg


  • STU3-C14R290
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      SCOP-LWT at 35°C
      		4.94
      SCOP-LWT at 55°C3.84
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		38 dB(A)
      Sound pressure level at 3m
      		35 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight165kg


  • STU3-C16R290
    • Electrical Specifications
      Power supply380 ~ 415 V / 3N~ / 50 Hz
      SCOP-LWT at 35°C
      		4.90
      SCOP-LWT at 55°C3.83
      Refrigerant-Type/GWP
      		R290/3
      Refrigerant-Charged volumn
      		1.5 kg
      Sound pressure level at 1m
      		38 dB(A)
      Sound pressure level at 3m
      		35 dB(A)
      Water outlet-Heating25~80 °C
      Water outlet-Cooling
      		5~25 °C
      Water outlet-DHW
      		25~70 °C


    • Mechanical Specifications
      Dimensions (W × H × D)1310 × 1050 × 465 mm
      Weight165kg


Data Download

  • Datasheet
  • Installation and Operation Manual
  • User Manual
  • Quick Installation Guide
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