Hydraulic Switch Unit (HSU)

This unit contains the main hydraulic switch, in this case for a non-reversible heat pump where the waterside is reversed depending on operation. All valves for selecting the different operations (mechanical heating, mechanical cooling, free cooling) are found in this unit. Also the primary pumps (evaporator and condenser pump) are integrated with this unit. The pressurisation unit, filters and expansion facilities are found here as well.

The main control panel, including power distribution to the heat pumps and other units, is included. The only connections that are required from the services point of view, main power and water, are hooked up here. The main BMS can connect to the main panel to control the overall operation and monitor functioning of the GSHP system.

The unit is designed for minimal pressure loss, easy installation in the plantroom (small footprint) and rugged operation. Circulation pumps are selected based on the requirements of the heat pump(s).

 

Hydraulic Switch Unit (HSU)

  • Different types available:
    • 2-pipe unit
    • 4-pipe unit
    • reversible heat pump
  • Offer
    • mechanical heating
    • mechanical cooling
    • free cooling
  • Include
    • pressurisation
    • degassing
    • main filter
    • expansion facility
    • Water connected here
  • Main control panel
    • Interface main BMS
    • Main power connected here
    • Monitoring and control interface