where I’ll attach the air compressor QD, then just add pressure to the tank
What do you mean there? Air compressor?
Gravity not good enough?Check out my post #43, you can see the blue air line. I am talking about if I ever have to drain the tank I can start pumping air into it to force out the water.
Gravity not good enough?
I have never heard of anyone doing that before on a boiler or tank or it even being a consideration.
Don't think that needs a separate or special fitting or anything if you did want to do it - you could just thread an air fitting into a pipe thread somewhere. But hooking an air compressor up to a heating system could make something go *sputz* that you don't want to.
I may do a 180* on the boiler for better fit and piping install. Anyone think running the exhaust pipe over the boiler a little would be a bad thing?
Keep in mind your heat exchanger will need to be cleaned, leave yourself enough room with stack pipe.