Red Seal Plumbing Practice Exam

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What is the maximum recommended length of 1/2 inch PEX tubing in a radiant heating system?

200 feet
250 feet
300 feet
350 feet

The correct answer is: 300 feet

PEX tubing is commonly used in radiant heating systems because of its flexibility and durability. However, it is important to consider the maximum recommended length for proper functioning of the system. In this case, the maximum recommended length for 1/2 inch PEX tubing is 300 feet. Choosing option A, B, or D would exceed this recommended length and could result in decreased efficiency and potentially damaging the system. It is important to follow manufacturer recommendations for maximum recommended lengths to ensure optimal performance and longevity of the radiant heating system.