The cylinder uses an independent secondary coil allowing the system to function with the main central heating.
Special finned solar heating coil transfers the energy efficiently into the domestic hot water.
Using separate solar and boiler coils the two systems function in parallel while being totally independent.
Boiler System Coil.
Heat energy into domestic hot water.
Hot Cold.
Header tank.
Mains in, to combi boiler.
Energy store.
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