Yes, the water comes in through the panel, through the filter (I have 3), out of the last filter, to return to the panel. Then the panel selector switch allows you to choose 'Normal' (tank) to use your tank water, 'City Fixtures' to use water hose hook up, or 'City Fill' to fill your tank. Regardless of what you select, the water will have passed through the filters first. I'm going to bypass all of that and adapt to the output of the tank for input of Clorox and fill water.
'17 36RSSB3///2012 F350 KR, LWB/SRW, Bilsteins, antisway bar, Bilstein steering stabilizer, Airlift air bags, wireless compressor, 295/20 tires at 4080 pounds each, oversized finned aluminum diff and trannie pans, synthetic fluid, KEM, PIP, & Tyrant tunes w/SCR4 programming, Edge CTS gauge monitoring, G37 2017 turbo, ATS Stage I transmission.