Had a System 2000 today making what I can only describe as a surging sound. Within 20 seconds of the burner coming on the noise starts. Pressure was high but the expansion tank was good so I purged the boiler and zones because it sounded similar to an air noise. No luck, boiler did the same thing, turned on and noise came back in about 20 seconds. Pressure was high again so I released some water and the noise surged faster. Seemed to be the loudest right below where the flue connects to the boiler in the heat exchanger, or maybe that's just where you hear it best because it's open. Could this be a scale issue? I know these boilers are supposed to be treated but this is a First time customer with no service records so I have no idea the history of the boiler. Energy Kinetics tech support said they had never heard of such an issue and said they would call me back. I don't think they are going to, so any help is appreciated.
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