I'm not sure what you plan to do. If you want to use the additional water heater in place of the one in the camper, you should be able to tie it in at the output of the campers' water heater and use the bypass valves to isolate the existing heater. The additional water heater would have it's own water supply, correct?
Dave
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Nights camped in 2013 - 55, 2014 - 105, 2015 - 63
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