"Normal" on mine is to operate out of the water tank using the pump. Had my problems early with that description--"normal" to me would be off city water spigot. "City Fixtures" is for operating off city water spigot; "City Fill" is to fill the water tank. Other one is to winterize.
Who ever takes the old one apart, be sure and mark the lines and associated connections they go to....
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2016 Tiffin 40QBH
2015 38RSSA--traded
2005 36TK3--retired, but it was a good one
2017 F450 KR
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