Forum Discussion
12thgenusa
Apr 03, 2018Explorer
Dutch_12078 wrote:
I do find the accumulator tank I installed in our RV beneficial in reducing pump starts and the need to re-establish the heater tank's air pocket, but as far as the water heater itself goes in the absence of an accumulator, if the relief valve is weeping when heating, then the air pocket in the tank is gone. Simply draining the tank fully with the relief valve open will re-establish the air pocket as noted in the owners manual trouble shooting section for most. Not all residential systems have an accumulator tank either.
No need to fully drain the tank. Simply turn the pump and/or city water off and open a tap inside to relieve system pressure. Then open the lever on the relief valve until water stops flowing. Release the lever and the air pocket is re-established.
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