not done it yet
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My first observation is that it seems to be directly pumping the water around the collector? Not an indirect system with a heat exchange coil at the bottom of the DHW cylinder - if it was this type, hot water, already heated, would not be going back to the collector.
Do the collector tubes have heat pipes?
Cold water entering the DHW cylinder should be at the bottom of the cylinder, so should not mix with the hot water above. Seems like a peculiar set up.
Do the collector tubes have heat pipes?
Cold water entering the DHW cylinder should be at the bottom of the cylinder, so should not mix with the hot water above. Seems like a peculiar set up.