Question about Rheem EcoSense by 7.4 GPM Tankless Water Heater Natural Gas High Altitude

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I am occassionally getting a moaning vibration, seems to be in the gas line. 1" supply to the house 3/4" branch for the waterheater which is the first appliance. hard piped all the way, is it possible there is not enough supply ?

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Maybe, but if it works OK and you only need to eliminate the vibration then it's going to be one of two things. The pipes themselves might be vibrating, or you may be getting a regulator and gas vibration (like a flute or a horn). As a simple test, try putting a locking pliers or a heavy c-clamp on the pipe, maybe in a couple of places. If this eliminates the problem, then it's the pipe vibrating and you only need to clamp some weight in place as a permanent solution, but don't make a direct metal connection unless you're certain the metals are the same. If that doesn't eliminate the problem then its the horn problem and you could make a geometry change (changing the length of the pipe - adding a couple of bends with additional fittings) good luck

Posted on Oct 15, 2010

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