Does the low water drain, drain all hot and cold lines on my 2015 Sunseeker 2800? Just wondering. I normally valve off the hot and cold lines to the hot water heater and turn on the bypass. Open all of the hot/cold water fixture faucet valves. Does this process drain the systems water. I know the fresh water tank has a separate drain.
Actually, if your unit only has one low point drain it should be red in color with a cap. It is designed to drain both cold and hot water lines only when the hot water heater is in bypass mode. The blue line with the valve is to drain the fresh water tank.