What should be avoided when installing a temperature-pressure relief valve discharge pipe?

The recommended practice for installing a temperature-pressure relief valve discharge pipe is to avoid terminating it in an enclosed area. This is critical because the primary function of the temperature-pressure relief valve is to release excess pressure and temperature from a water heater or boiler to prevent dangerous conditions like explosions. If the discharge pipe ends in an enclosed space, any released steam or hot water could accumulate, creating a hazardous situation for occupants.

In addition, ensuring that the discharge pipe is directed to a safe, open area allows for effective drainage and prevents the risk of back pressure or obstruction, which can hinder the valve's operation when it is activated. Thus, proper installation should always direct the discharge to a location where there is no potential for harm or damage, reinforcing the importance of venting to an appropriate area.