Without pictures showing where and how the lines are connected I am going with a hot water heater bypass for winterizing the system. It is very similar to what I installed. Bypassing the water heater allows the system to be winterized so you don’t need to fill the heater tank with “pink stuff”. All you do is open the drain valve on the hot water heater to winterize it, or should I say that is how I do it. Others may have different methods.
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Kevin
2004 Mainship 34 Pilothouse Sedan
Twin Yanmar 240's
Freeport, NY
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