Core TradesCâu 95 / 700
A gas furnace is installed in a small, tightly sealed closet with no combustion air openings. The MOST likely dangerous consequence is:
a.The furnace runs more efficiently
b.Incomplete combustion and possible carbon monoxide production due to insufficient combustion air
c.The furnace produces more heat
d.The gas line will freeze
Giải thích
A fuel-burning appliance needs adequate combustion air; a sealed closet starves the burner, causing incomplete combustion, potential backdrafting, and carbon monoxide. It does not improve efficiency or heat output, and lack of combustion air does not freeze the gas line.
Trích dẫn luật: 2025 CA Mechanical CodeLuyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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