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Di-electric corrosion

Darrell Member Posts: 303
Went to a customer's house today for a pinhole leak at the indirect hot water heater. A Triangle Tube Phase Three. The copper piping immediately adjacent to the unit had a pinhole...and the next 18 inches that I took out was thinned to the point of being able to punch my pocket knife through the wall. I didn't look beyond that point or check the DCW line, (not looking for trouble yesterday 'cuz everything we touched broke or quit!). The heater had di-electric unions on it and didn't appear to be harmed at all. The pipng is bonded Cold to Hot through a Beacon Valve. I did notice that a plastic sediment filter had been installed at the piping from the well with no bonding strap across it. I told the owner to have an Electrician Buddy of mine in to bond everything, and to check for stray electrons leaking into the water system and ground wiring. I also told him to get a good water analysis to check Ph. What else should I tell him? Odds are he'll have to fight this until he strips the piping and replaces it. I've run into this before and never really reached a satisfactory resolution to the problem.

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