BennyLumpkin wrote:I'm smart enough to know there is an CO problem for several reasons. first one is there is a CO detector about 10 feet away from it and the other is this is the second winter I've had in there.there is a possibility I'm not reading the manometer correctly.
I wasn't trying to state one way or the other. Your post just raised the hairs on my back. I apologize if my post was taken out of context. Glad you are on the right track. You should check the draft at the outlet between the boiler and Baro. You will want a -.04 there that is adjusted with the baro. I am not sure what the differential should be if any when measuring in the hole over the door. Usually you want to see a slight difference to the lower numerical number ( I don't want to say positive ) like maybe -.03. That adjustment is made by adjusting the shutter on the combustion fan when the unit is running. Open it more that # drops.
But refer to what your mfg recommends.