I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
On the subject of testing the CO detector, I would suggest that you remove it and put it near the exhaust of your running vehicle and see if it beeps. This would be safer than putting CO into the RV.