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Approximate readings before and after gas pressure was adjusted. What's better?
Gas pressure 3.6
Gas pressure 4.25
This is an 80% gas furnace. Isn't it a better burn to try and get the Co2 up closer to 7.5 - 8 as long as the co, stack, etc is at exceptable numbers? I was concerned about the gas pressure being to high, but if all the other readings are good, seems fine to me?
Thoughts, thank you.