All 3 valves are the by pass. close off the two leading to the HW tank and open the one connecting the 2 lines.. the first 2 close off access to the tank and the last one allows water to flow to the hot water lines (for blow out and antifreeze)
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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