The buffer tank can be connected with two or four pipes. The choice affects both inertia and the degree of hydraulic separation.
2-pipe configuration
The tank functions primarily as an additional volume of water within the same circuit.
4-pipe configuration
A distinct primary and secondary circuit are created, allowing flow rates to differ.
When to choose each solution
The choice depends on zoning, circulation pumps, and the need for a constant flow rate for the heat pump.
