InstallationQuestion 37 of 110
Gas piping for a furnace must be sized primarily to do what?
a.Match the refrigerant line size
b.Deliver adequate gas volume at the required pressure to all connected appliances
c.Reduce electrical load
d.Support the condensate drain
Explanation
Gas pipe is sized from tables using the appliance input in BTU/hr, the pipe length, and the allowable pressure drop so every appliance receives adequate fuel. Undersized piping starves burners and causes poor combustion. The CMC provides sizing tables and requirements.
Law Reference: 2022 California Mechanical Code (CMC)Practice all 110 questions free — no signup required.
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