I have a 2 PSIG gas service to a regulator at the pool heater location. The size of the line to the regulator is about 5/8" or 3/4" at a distance of about 45 feet to the meter. A few years ago I had the gas system upgraded from a conventional low pressure system with a larger pipe size. It servided a 22 year old 250K Teledyne Laars Lite pool heater that is no longer working. I’m considering replacing it with either a Raypak 266K or 336K with electronic ignition. My pool has 680 sf of surface area and about 27,500 gallons, and I live near Birmingham, AL. Is my gas service adequate? Which size model do you recommend? Is the cupro nickel worth the extra expense for a chlorinated pool? Thanks.