NV C-21E Solar Air Conditioning Practice Questions - Nevada C-21E Solar Air Conditioning Contractor Examination Exam

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Why is PEX generally prohibited on the collector side of a closed-loop solar air-conditioning system even though it is listed for some hydronic heating?

PEX cannot be insulated Collector stagnation and generator-loop temperatures routinely exceed PEX pressure-temperature ratings PEX is not allowed anywhere under the UPC PEX cannot be joined with mechanical fittings

Correct Answer:

Collector stagnation and generator-loop temperatures routinely exceed PEX pressure-temperature ratings

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