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Green Plumbing

Category - Solar Hot Water

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What is another term for “reverse return” piping?

Backward flow
First in, first out
First in, last out
Opposite course

Explanation

Answer: C - First in, last out piping is another term for reverse return piping. This means of balancing the liquid as it moves through the collector ensures that each riser is directed the same amount of liquid to heat as all the others.

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