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I HAVE AN OLD OIL FIRED BOILER IN AN OLD FARM HOUSE I NOW HAVE NATURAL GAS TO THE HOUSE NOW. I HAVE A LINE ON AN NTI200 FOR LESS THAN HALF PRICE ITS NEVER BEEN INSTALLED HE HAD 5. ONLY HOOKED UP 4 IS IT WORTH IT FOR ME TO CHANGE OVER, ARE THESE NEW HIGH EFFICIENCY THAT MUCH BETTER, I GET a Lot...

i have an old oil boiler system can i change my circulating pump from a bell&gossett 1/12 hp. 1725 rpm with a armstrong 816019-002 pump to a bell&gossett LR-15B (bronze) its 1/12 hp.3250rpm i cant seem to find the gpm or pressure difference the new system i want hook up is natural gas NTI...