Install the discharge pipe. The discharge pipe should be at least 3/4” inside diameter and sloped for proper drainage. Install it to allow complete drainage.
The discharge pipe must withstand 250°F (121°C) without distortion. Use only copper, PEX, or CPVC pipe. Do not use any other type of pipe, such as PVC, iron, flexible plastic pipe, or any type of hose.
Terminate the discharge pipe at least 1" and a maximum of 6" above a floor drain or outside. Do not drain the discharge pipe into the drain pan; instead, pipe it to an adequate drain.
In cold climates, terminate the discharge pipe inside the building to an adequate drain. Outside drains could freeze and obstruct the drain line.
WARNING! Do not place any valve or other restriction between the tank and T&P Relief Valve. Do not cap, block, plug, or insert any valve between the T&P Relief Valve and the end of the discharge pipe. Do not insert or install any reducer in the discharge pipe.