Single zone open system

The following images illustrate the open system "Radiant Ready" system from the Radiant Floor Company that transports hot water from the tank to the floor and domestic hot water circuit.

• Hot water leaves the heat source (hot water tank in this case). The domestic hot water pipe may divert the supply, but this is replaced by water from the well.
  
• The water then passes through the pump. Notice that the water must move upward through the pump in this design.
  
• The water then passes through the floor and returns to the tank through the pipe at the bottom of the fixture.