I had worked on this customer's old oil boiler 3 years ago and he wanted a new one but our price was too hi. So he had Mr. lo bid do it ( wouldn't tell me who) and look what he got.
I had to go there at 10pm because the pop off blew and wouldn't close so no hot water. Couldn't find the original installer (surprise!) so had to pay for me to replace it after hours.
Notice the relief valve was piped into the same hose as the condensate drain!?!
Also the nice gas piping.
Sorry about the poor pic, just had the cell phone camera.