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Superstor sidearm problem?
Has anyone seen or heard of the cupornickel coil in a Superstor indirect scaling up? The tank is taking forever to reach set point. I have checked and verified all there is. Flow is good. Delta T through the heat exchanger is ok. I drained the tank expecting to find sediment build up but it is clean. The only thing I can think of is scaling on the coil? Thanks for any input.