Also can you verify that the hottest we can have the water by law is only 130 deg?
Depending on which code you read what the temperature ratings shall be.
130 degree’s will NOT KILL bacteria that can hibernate inside these tanks.
Most legitimate codes do state for domestic dish washers the temperature should be 140-160 degree’s F and for commercial applications 160 degree wash and 180 degrees in lieu of chemicals for sterilization.
The 130 number came about because people today are stupid and cannot be held accountable for their own actions.
Because of lawyers we now have a society of victims and morons.
If a person buys a cup of coffee and pours it in their lap the coffee maker is guilty.
If a guy steals a cops gun and shoots someone the gun manufacturer is the criminal.
A guy goes into a bar drinks like a fool gets behind the wheel of a car kills several folks the bar tender is guilty.
This is why water heaters are now being lowered to dangerously low temperatures.
As long as morons can find away to get hurt and scum of the earth lawyers are lurking under rocks more and more companies are going to manufacturer in other countries and try to make equipment almost fool proof.
The piping arrangement should be as specified by the manufacturer.
Now if lawyers were no longer on earth the Quality of brain power would rise considerably.