If you chose to adjust your temperature setting, you should check your owners manual for instructions. If you do not have your owners manual, check the manufacturers’ website for a downloadable copy.
Water Heater Manufacturers
American Water Heaters AO Smith Bradford White State Rheem
Temperature Relief Valve
The function of the temperature relief valve is to prevent dangerous temperature rise and overpressure of the water heater tank. The T/P relief valve is located on the side of the water heater. The valve will be connected to the top of the water heater, no more than 6” from the top of the water heater. The T/P valve should have a discharge pipe extending from the valve to within 6 to 12 inches of the floor or overflow pan. In the event of a temperature or pressure problem, the valve will release. If you see water coming from this pipe, approach with caution, the water may be extremely hot.