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

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A copper solar collector supply is connected to a steel storage-tank fitting. What UPC joint practice prevents galvanic corrosion at that connection?

A dielectric union or other approved dielectric fitting A PVC coupling Soft solder only, with no dielectric Leaving a 1-inch air gap in the pipe

Correct Answer:

A dielectric union or other approved dielectric fitting

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