If my system requires a total volume of expansion of about 8 gallons, and an acceptance factor of just under 3 gallons, and the Extrol #30 is rated at 4.4 gallons of total volume and an acceptance factor of 2.5 gallons, would using 2 of the #30's suffice to give me 8.8 gallons of total volume and 5 gallons of acceptance factor? I.E., do you simply sum their individual volumes?
What is the best way to mount 2 expansion tanks. Would each require its own air scoop and air vent, or can two of them somehow share one common air scoop and air vent (perhaps via hanging each off of legs of a Tee placed below the air scoop), or can one just be placed in line (in series) with the other, with only one of them having the air scoop and air vent above it?
PS: I find it surprising (as well as confusing) that (per Amtrol literature) the Extrol #60 has the exact same 2.5 gal acceptance factor as does the #30.
What is the best way to mount 2 expansion tanks. Would each require its own air scoop and air vent, or can two of them somehow share one common air scoop and air vent (perhaps via hanging each off of legs of a Tee placed below the air scoop), or can one just be placed in line (in series) with the other, with only one of them having the air scoop and air vent above it?
PS: I find it surprising (as well as confusing) that (per Amtrol literature) the Extrol #60 has the exact same 2.5 gal acceptance factor as does the #30.