Written by • February 18, 2026• 11:10 pm•

UMC Code Quiz | First Quarter 2026

Listed central-heating furnaces shall have the clearance from supply ducts within 3 feet of the furnace plenum and not less than _____.

Safety limit controls shall not be used as operating controls on _______.

Means shall be provided for disposal of condensate and to prevent dripping of condensate on the __________________.

What is an effective means to prevent air or oxygen from passing back into the system when air or oxygen is being used under pressure in connection with the gas supply?

Last modified: February 18, 2026

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