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NewellCrazy · 03-30-2013, 07:32 PM

items to keep in mind when looking for a marine HW heater.

The internal water holding tank should be SS or Aluminum, glass lined has a shorter life.

The heater should have an element overheat breaker , so if the electric is on and the tank is/gets empty , its a simple reset.

In order to attempt to moderate the FW temp (which can get to 180-200F) some units will have a bypass.

Many do not by pass , they simply restrict the flow.

These suck if anything (like a box heater) is on the same feed circuit. It will slow the circ water and the heater will have no output.

Since the hot water is close to 180F , the on board use of a thermostated mixing valve is good insurance.

03-30-2013, 07:32 PM	#3
NewellCrazy Senior Member Join Date: Sep 2006 Location: Sugarland, TX or Salida,CO Posts: 1,867	items to keep in mind when looking for a marine HW heater. The internal water holding tank should be SS or Aluminum, glass lined has a shorter life. The heater should have an element overheat breaker , so if the electric is on and the tank is/gets empty , its a simple reset. In order to attempt to moderate the FW temp (which can get to 180-200F) some units will have a bypass. Many do not by pass , they simply restrict the flow. These suck if anything (like a box heater) is on the same feed circuit. It will slow the circ water and the heater will have no output. Since the hot water is close to 180F , the on board use of a thermostated mixing valve is good insurance. __________________ Sean If Ain't a Newell, It Ain't Wurt Oonin!