The B5 systems contain either tank-in-tank systems or tanks with an internal heat exchanger and differ from one another with respect to the addition of heating.
The system additionally features the following components:
B5 - Swimming pool and combination tank DHW system + space heating
B5.1 - Swimming pool and combination tank DHW system
B5.2 - Swimming pool and combination tank system (tank in tank) for DHW and heating
B5.3 - Swimming pool and combination tank system (tank in tank) for DHW only
B5.5 - Swimming pool system with buffer tank (heating buffer), DHW, and space heating