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150 kBTU pool heater question
I am planning on installing a 150 kBTU pool heater and the gas line installation would be so much easier if I can replace the gas line to my gas fireplace with a 1” pipe vs the current 1/2” pipe. However to do that I would have to go from 1/2” to 1” at the main supply tee. I could use a 1” to 1/2” reducer coupling through a short 2” nipple off the main gas tee. My main gas line is 1” and I plan to run a 1” gas line off the reducer couple to my pool heater which is less than 30 ft from the nipple. So I would have about 2” at the 1/2” pipe size then go immediately to 1” pipe. I looked in some gas pipe sizing charts and it says a 1/2” pipe with a 0.62” diameter can support a 170 kBTU for 10 feet. Based on this I think I’m ok but looking for advice from some of you experts. Thanks!