JDerck wrote:can i put the the water to fill the boiler in the bypass line?
You can put the fill anyplace -- just be sure to use a back flow preventor and a pressure reducing valve with a fast fill optionhttp://www.bellgossett.com/literature/files/1195.pdf
JDerck wrote:and can i put the the expansion tank on the bypass line? ....
Again - you can do what ever you want but this is not the best place. See page 32 on the link I provided
JDerck wrote:the way by boiler sits now i got about 12 inches to the rafters in my base ment .... its very low pipes are blocking me from all angles to even plumb this thing very tough job.......
Some jobs are tougher than others
JDerck wrote:also the flow at the tee for the bypass is going into the boiler or is it going out of the boi;er? i have a flow control valve and i dont know if i should point it going into the boiler or out?
Think like the water -- what way is it going?