...
When two branches come together, we propagate the individual parts of the flow :
domestic hot water (DHW)
heating prioritised by DHW (e.g. when HIU’s are applied)
heating not prioritised by DHW (e.g. when electric heaters are applied)
...
In the example below we propagate two DHW flows
DHW flow 1, with total power P1, diversity flow v1, and diversity factor f1
