re: Carbon Monoxide poisoning from generators

I have a 22kw standby generator that was installed 2 years ago and this is the first time that I have had to use it. Everything had been fine since Thursday. That is until last night when my CO monitors started going off. Got the family out of the house and started looking around. There was no wind outside and I believe that allowed the exhaust gas to come into the attic via the eave vents. I brought a 4 gas monitor into the house to verify if the monitors were working properly and indeed they were. Went into the attic and I got readings over 150 ppm. Shut off generator and opened doors and windows to vent the house. Luckily the monitors worked and we were able to spend the rest of the night at my parents. I will be making a call shortly to the installers to see about having my set up moved to another location.