I have the 2306 but I have the queen and not the murphy bed option.
From what I remember - I was told that if you order the murphy bed it takes all of the front underneath storage out and moves it to the back where the 3rd bunk was and also adds and outside door so you can get access to that storage area - I wouldnt be surprised that is where they move the hot water heater cause there isnt many other places to put it unless they took one of the storage cabinets - hence leaving you with no storage space
So your dealer may be telling you the truth for a change LOL
2011 Rockwood Mini Lite 2306 - Matt
2004 Dodge Ram 1500 Qaud Cab 4x4 with 35" tires and 3.92 gears, Dynatech Longtube Headers & Fabtech 6" lift + Superchips with shift Tuning
Nights Camped 2011 (37) - 2012 (16)-2013 (2) -2014 (5) -2015(0)
USMC 91 - 95 - F/A-18 Aviation Ordnance