Relief System

A vital part of water heater installation is the provision of a temperature and pressure relief valve and relief line. The relief system is designed to let off excess heat and pressure automatically (Fig. 10.)

With all the plumbing connected, you can close the heater's drain valve and open the cold water inlet valve to fill the storage tank. Opening a hot water faucet will release trapped air in the top of the tank. Close the faucet soon so water flows readily from it. Check for leaks.

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