2000 374 voyager water heater tank

[333]

I just purchased a used 2000 carver 374 voyager cabin cruiser. The hot water tank is locater on the port side of the port engine {330 cumins}. the hot and cold water line is disconnected and joined together. The two male nipples on front of tank are not attached to anything. I assume these should be connected to the engine so that hot engine coolant will heat the water. Problem is I have no info on why this is done or if there is a problem with the heater. where tank is located it looks impossible to remove tank without removing engine. Has anyone had this problem and is there a way to remove tank without moving engine

[bud37]

Welcome to the forum........By the sounds of your explanation, I would think the previous owner abandoned that tank function, perhaps the lines from the engine were leaking into the potable water side or the tank just wore out and leaked.

Does the tank still function as a water heater, but you are concerned with the lines from the engine to heater side ?

[warren.corbin]

Normally, the hot water heater heats the water with electric current. It does not rely on hot water from the engine to heat water. What you describe with the cold and hot lines tied together may be left from the winterizing process of the fresh water system.

[Viper]

Welcome aboard. If I'm reading it right, sounds like the coolant lines from the engine to the hot water heater exchanger have been disconnected from the heater. This circuit is designed to heat the water in the tank while the engine is operating. Usually the only reason one would disconnect those lines is if the internal heater exchanger is leaking. If that was the case though, your fresh water system would be leaking out of the exchanger ports on the heater. Are the exchanger ports on the heater capped off? If not, I'm wondering if the previous owner removed the coolant lines suspecting this circuit was contributing to an engine cooling problem.

Or I'm reading this wrong and it's the fresh water lines that have been removed. If that's the case, either someone forgot to reconnect them after winterizing, or the tank is leaking. Take a look at the empty ports, the fresh water ports on the tank without fittings will be female threaded holes, and the coolant exchanger ports will be two pipes sticking out with nipples for clamping on engine coolant lines.

When you turn on the breaker for the tank, do you eventually get hot water?

[333]

I would like to remove water heater tank. Was wondering if anyone on here has done this with this model carver

[333]

After tracking down the original owner he explained to me that he didn't use the tank so bypassed it so that he didn't have to winterize it. only thing is the two lines that come from the engine are not there and i'm not sure where to attach them. the engine is a 330hp cummins b class. My question now is if anyone as the same set up and could tell me where the two lines attach on engine. These lines would be the ones that heat the potable water with hot coolant that is circulated around engine for cooling