Hey guys, New to the forum, and hoping someone can shed some light on a small problem I am facing. I want to have the discharge piping properly installed for this water heater in a 2nd floor condo (no floor drains of any kind). There is a pipe in the wall not connected to anything that I believe was used for pressure relief with the previous water heater, but it sits higher in the wall then the pressure relief valve on the tank. There is currently pvc running from the relief valve down to a 5 gallon bucket. I want to know if it would be acceptable to use a shark bite line (as demonstrated in the photo), or if having things go against gravity is a big no-no. Any advice is appreciated. Thanks!