GINO wrote:
I replaced a top element on an electric water heater ( double element) at
the cottage. We use lake water that is pumped up to a holding barrel above
the heater then feeds the heater. After replacing the element it took quite
a long time ti get water to run through the system to the tap, air pockets I
guess. The new element burned after a short while , it may have been due to
the air pockets and not much water in the top part of the tank.

Question: this heater has a thermostat for top and bottom element, should it
not turn off the element if it gets to hot , either if water is present or
not?



It's very common for the thermostats to go bad over time also. I always
replace the other element and both thermostats when I have problems. I
then run the water until it comes out normal before I turn the power
back on. It's just extra work to replace one element and then another
and then a thermostat and etc when you can do them all at once and it
will last a long time. Sorta like replacing all the hoses and belts on
your car--you don't want to get broken down.

J