Hello All.
I want to install a 330k BTU pool heater. The heater will be 140' away from my gas meter. According to my gas utility, the pressure is 6" wc, specific gravity of 0.60 and they size on a pressure drop of 0.5" wc.
When doing these calculations, I find that I need a 1.5" pipe running from my gas meter to my pool heater.
I contacted the gas company, I had them create a quote to resize my meter because I only have a 250k BTU meter with a 1" pipe coming out the top. I filled out all the proper paperwork, explained what I was doing and what I needed, and they sent me a quote, with no specific information, just explaining it as a "meter upgrade." After some confusion on email/text, I spoke with the "engineer," on the phone. It took him quite a long time to understand that all I wanted to know was what size pipe was coming out of the output (residential) side of the new meter. He kept explaining that the residential side of the meter has nothing to do with them... Finally he understood and told me it was still a one inch output.
I explained to him, again, that I required a 1.5" output. He told me that didn't matter, that I could put a fitting on to increase the pipe size to 1.5" on the residential side.
Now I'm no expert (I am a mechanical engineer, but I've done very little with pipe flow), and I think I know enough to know that placing a 1.5" pipe after a 1" pipe will reduce my volume to only the 1" size and drop my pressure as well. He told me it won't and it'll be fine.
Is he right or wrong? I'm not going to spend the money on a contractor and the upgrade if I can't sufficiently supply my heater with fuel.
Thank you in advance.
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