John Gayewski
In the Trades
It might be best for you to take a picture from a distance away. Get as many of the components in the picture as you can.
A union connection somewhere will allow you to fill the piping without trapping a lot of air, or you could, as you say open the boiler drain and fill. If it were me I'd want to fill from below let the air come out of the top, then seal a union or purge valve. There are millions of possible orientations and techniques to fill and purge. It's best if have valves to open and close to fill and purge.
A union connection somewhere will allow you to fill the piping without trapping a lot of air, or you could, as you say open the boiler drain and fill. If it were me I'd want to fill from below let the air come out of the top, then seal a union or purge valve. There are millions of possible orientations and techniques to fill and purge. It's best if have valves to open and close to fill and purge.