Hot Water Heater Discharge Pipe Code

2017 fbc residential 6 th edition 28 water heaters p2804 relief valves p2804 6 installation of relief valves p2804 6 1 requirements for discharge pipe 1114 1 4 storm drainage piping discharge piping shall meet the requirements of section 1102 2 1102 3 or 1102 4 and shall include a gate valve and a full flow check valve.

Hot water heater discharge pipe code.

5 f the discharge pipe for a water heater shall terminate within the same room or enclosure within which the water heater or hot water storage tank is located. Summary of relief valve code requirements. Not be directly connected to the drainage system. Scalding water and steam escape the tank through the valve and tube to relieve the pressure.

Building codes require temperature pressure relief tpr valves with discharge pipes on all new water heater installations. 504 6 requirements for water heater tpr valve discharge piping the discharge piping serving a pressure relief valve temperature relief valve or combination thereof shall. 8 termination of the tpr drain pipe cannot be more than 6 inches or less than two pipe diameters above the floor ground or waster receptor. Code expert glenn mathewson describes 10 common water heater code issues including confusion about drip pans and drains unsupported expansion tanks and plastic vents lack of combustion air and more.

If the pressure in the tank exceeds 150 psi or the temperature exceeds 210 degrees fahrenheit the tpr valve opens to release the pressure.