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size circulating pump to use

john_181
john_181 Member Posts: 93
I was on here last fall and you guys were great helping me get my old boiler up and running. I do have a question. My circulation pump is a B&G serries 100 and the inlet and outlet pipes are 1" in size contected to my building pipes which are 2" in size. Is this OK or should i have a pump that pushes more flow??

Other info:
boiler is 430,000 BTU
27 radiators
former gravity system
large heat supply lines 3"
return lines 2"

Thank you

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