Outlets in HWS or CWS systems may have differing Loading Units, despite the outlets being of the same type. For example, see basins below:
Loading Unit figures differ depending on what Calculation Standard has been selected. Changing between standards while entering the outlets may result in some outlets being entered with BS806 loading units, and some with BS6700 loading units.
To ensure consistent standards across all outlets you will need to refresh this data. To do so, simply go to Pipes > Defaults, change the standard, change back to the one required, and then recalculate your system.