Removed defective domestic hot water mixing valve installed new mixing valve and adjusted domestic hot water supply to120 degrees Fahrenheit tested hot water at faucets and left system working homeowner joined me in testing of the system and he is satisfied with the results View visual findings from this job here - https://visionshare.xoi.io/?id=XA-2F41-16CEB0D06C2F4FE4807C4EC7D8EBDC49