Where can the temperature and pressure relief valve be terminated?
The temperature and pressure relief valve (minimum 150 psi rated) shall be taken full size (minimum ¾”inch) to the exterior of the dwelling or building. Most manufacturer installation instructions allow for a maximum 30 foot distance with no more than 4-90 degree elbows in this line. The temperature and pressure relief line shall be sloped from the vessel to the exterior at ¼” per foot using straight lengths of piping instead of coils.
