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pressure and size of expansion tank for 3rd floor apartment (boiler 50k btu in the basement)
everywhere are different suggestions for size and pressure of expansion tank for apartment located on 3rd floor,baseboard finned heaters,50k btu gas boiler located in basement.Currently installed # 30 extrol tank with fractured diaphragm.It's very,very tight place to work in,and few people told me the #15 tank would be sufficient for my needs and much easy to install.