I have a sx-160 monster extrol expansion tank (43 gallon acceptance). The plumbing size on the bottom of the tank is 1-1/4". Does my plumbing have to be a certain size for a expansion tank. Will 1/2" or 3/4" pipeing from the boiler/tanks loop to expansion work or is larger pipeing better? Also, If my boiler is in the attached garage and the pressurized storage tanks and most of the pipeing are in the basement, what is the best place to tee in the expansion tank and should it be as high or low as possible? I can place it up in the garage with the boiler or in the basement.