NM Mechanical Inspector Practice Questions - New Mexico CID Mechanical Inspector Examination Exam

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A domestic clothes-dryer exhaust is 4-inch smooth metal and 42 feet long to the outlet, with no manufacturer length calculation provided. Using the UMC specified-length method, what should the inspector do?

Approve any length of metal duct Reject it; the specified-length method limits the exhaust duct to 35 feet from the transition duct to the outlet, reduced for fittings, unless another UMC length method is documented Approve it because 42 feet is less than 50 feet Require the dryer to exhaust into the furnace return

Correct Answer:

Reject it; the specified-length method limits the exhaust duct to 35 feet from the transition duct to the outlet, reduced for fittings, unless another UMC length method is documented

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