NM CID MM-2 Practice Questions - New Mexico CID MM-2 Natural Gas Fitting Examination Exam

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An existing masonry chimney will vent a new Category I gas furnace. The flue is oversized, unlined, and has crumbling tile. What is required?

Nothing; any masonry chimney may vent a gas furnace The chimney must be sized, lined, and in usable condition for the gas appliance per UMC Chapter 8, typically with an approved liner when the existing flue is oversized or deteriorated Vent the furnace into the chimney with no connector rise Drop unlisted DWV PVC into the bad tile

Correct Answer:

The chimney must be sized, lined, and in usable condition for the gas appliance per UMC Chapter 8, typically with an approved liner when the existing flue is oversized or deteriorated

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