Absorption fridges are completely dependent on gravity to function, and the rate of the fluids flow is determined by the size and angle of the tubes decentโฆ optimum performance happens when the fridge is level, and
there is only one levelโฆ operating out of level slows the cycling of the fluidโฆ slowing the cycle allows the fluid in the boiler to become hotter because the heat source is constant and consistentโฆ
The fluid consist of ammonia, water and rust inhibitorsโฆ when the solution is over heated because of slower cycling fluids the rust inhibitors chemically break down and crystallizeโฆ this condition is cumulative and permanentโฆ when crystallization becomes to high it can plug the tubes and stop the solution from flowing and/or it renders the rust inhibitor less and less effective and it shortens the useful life of the fridgeโฆ this can happen on either heat sourceโฆ
Newer units are built the same way the older ones are but they are more tolerant to out of level conditionsโฆ more tolerant wouldnโt mean the risk is eliminated and non-existent it only means the damage caused is slowedโฆ that was done by isolating the siphon pump tube from the heat source by placing it inside the boilerโฆ
Mfgโs say it can be operated with the RV comfortably levelโฆ that will in all likelihood get it beyond the warranty periodโฆ but in their warranty listed as non-covered is,
โWARRANTY DOES NOT COVERโ
โNon operation of the refrigerator/freezer or resultant damage to the unit where the refrigerator/ freezer has been operated in an out of level situation. โ
there is no way to measure the damage caused by out of level operation or how quickly that damage will adversely effect its operation until it finally failsโฆ As expensive as they are, I choose not to risk causing any damage that is avoidable by something I have control over like levelingโฆ
Love my mass produced, entry level, built by Lazy American Workers, Hornet