You should use the pump on the coach to pull water out of a container and set the valve to fill the tank just like when connected to city water. You should be able to select the pump to do this easily; like winterizing but instead of antifreeze you are using water.
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Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
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