We just picked up our 44U this past Tuesday.
Zone 1 is on passenger side above the passenger seat near the map light facing the rear of the coach
Zone 2 is on the wall by the 1/2 bath door below the CO detector.
Zone 3 is on the master bedroom wall with the door to the master bath close to the pass anger side cabinets.
Hope that helps.
2014 Entegra Aspire 44U
San Antonio, Texas