The Sunvic Unishare System Pack is designed for installations fitted with a single pump supplying both Central Heating and Domestic Hot Water requirements and comprises of a 3-Port Motorised Valve, Room Thermostat and Hot Water Cylinder Thermostat. The 3-Port Mid Position Valve automatically diverts hot water from the boiler as required to either Central Heating or Domestic Hot Water circuits or to both. When both the Room Thermostat and the Cylinder Thermostat are satisfied, both the boiler and circulating pump are switched off, reducing unnecessary wastage and improving the life of the system components.