I am planning on purchasing a 2016 Tuscany by Thor that has an Aqua Heating system.I am unfamiliar with this system and have a couple of questions: 1.) Can it run on 50-amp electric service regardless of outside temperature? 2.) If I run it in diesel mode, how much fuel does it use per hour? 3.) My new coach also has 3 air conditioners with heat pumps. To what temperature are they effective? 4.) Will I have on-demand hot water regardless of which system I use? Appreciate any informat