I’d like to close out this thread by saying that the boiler was indeed ruined by water left in it and freezing temperatures crushing it and cracking the weld between water and glycol. I posted a bunc… (View Post)
Both drain ports are circled. Each to one side of that metal hold down clip. No apparent one way valve between them. Might be a one way to the right of both of them. That’s upstream. (View Post)
I’ve yet to install this jumper, but I did put a meter on it to determine what was hiding in the shrink tubing. It’s just a 1k resistor. Pins 5 and 6 jumped with it. Waiting to get a little more expe… (View Post)