Gas PipingQuestion 256 of 360
A line pressure regulator on a 2 psi system has a vent limiter or vent connection. Where must a regulator vent generally terminate?
a.Into the return air plenum
b.Into any interior wall cavity
c.To the outdoors, or be fitted with an approved vent-limiting device, so escaping gas cannot accumulate indoors
d.Directly into the appliance combustion chamber
Explanation
If a regulator diaphragm fails, gas can escape through the vent, so the vent must terminate outdoors or use an approved vent-limiting device to prevent indoor gas accumulation. It may never discharge into a plenum, wall cavity, or combustion chamber. The vent opening must also be protected against blockage by insects or debris.
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