Gas Piping第 90 / 120 题
A gas furnace sits in a basement mechanical room. Its manual shutoff valve is installed in an adjacent storage room 9 ft away, behind a closed door. Why does this installation fail inspection?
a.Shutoff valves must be within 3 ft of the appliance
b.The shutoff must be within 6 ft of the appliance and in the same room as the appliance
c.Only the main valve at the meter is allowed to serve a furnace
d.The valve must be downstream of the appliance regulator
解析
Each appliance needs an accessible manual shutoff valve located in the same room as the appliance and within 6 ft of it, so a valve 9 ft away in another room is not acceptable. The 3 ft figure is a connector length limit, not a valve distance; a main valve at the meter does not satisfy the individual appliance shutoff; and the appliance shutoff belongs upstream of the appliance controls.
法律依据: IFGC §409.5免费刷完整 120 道题库 — 无需注册。
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