Quiz: 2024 International Residential Code (IRC) Chapter 28 Water Heaters

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1. What is the minimum nominal iron pipe size for the inlet of a drain valve installed at the bottom of a tank-type water heater?

2. What type of thread must be provided on the outlet of a drain valve for a tank-type water heater?

3. Water heaters must be installed to provide access for which of the following?

4. According to the IRC, where should water heaters and storage tanks be installed?

5. A plastic pan installed beneath a gas-fired water heater must be constructed of material having a flame spread index of what value or less?

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