Gas PipingQuestion 242 of 360
What is the typical operating (manifold) pressure for a standard residential propane (LP) appliance?
a.About 10 to 11 inches water column
b.About 3.5 inches water column
c.About 2 psi
d.About 25 inches water column
Explanation
Standard propane appliances operate at roughly 10 to 11 inches water column at the manifold, higher than natural gas at about 3.5 inches. This is why an appliance and its regulator must be matched to the correct fuel; installing a natural gas orifice on propane, or the reverse, is dangerous. Confirm the appliance rating plate and regulator spring for the fuel supplied.
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