Expansion Tank Pipe Size
Can anyone tell me how to correctly size the piping connecting an expansion tank to the system? I am currently installing a 40gal tank on a 130,000 Btu system. Water temp in the boiler loop where the tank will connect will be 190, and the tank will be charged to 19psi.. The tank comes with a 1 1/4 inlet, which got me wondering. I figured I better check with those than know more than be before bushing this down to 1/2 in to connect to a spirotherm. The tank is large to accommodate a three story building with cast iron radiators, and to work with a solid fuel boiler without using a dump zone.
1/2" should be fine...
The velocity of the expanding fluid will be nil.
The diaphragm is made for he temperatures and pressure it will be seeing, so no benefit to running a larger pipe to dissipate heat before it sees the bladder.
ME
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
Expansion Tank Pipe Size
Thanks for the info. That is what I thought, but sometimes what seems to make sense to me turns out to be wrong for some unforeseen reason. I figured it was best to check with someone when potential safety is involved.
