In the Field · Part 4

Water heaters I: tank. Seismic strapping, the T&P discharge line, expansion tanks, sediment traps, pans, venting, and the garage rules

The tank water heater is the job a residential plumber does most and the job that fails inspection most, for the same six reasons every time. This lesson is those six items with the code section and the exact requirement for each: the two seismic straps and where they go, the T&P discharge line and its eight rules, the expansion tank that a regulator or check valve makes mandatory, the sediment trap, the drain pan and when it is required, and the garage rules for ignition height and vehicle protection. It closes with the replacement sequence as an inspector would check it and with the case in lesson 4.20, where a heater failed twice on items that were on this page.