Originally Posted by
Matt Fellman
The way it was explained to me, this ANSI number meant it had been tested to be resistant to explosions due to low lying vapors. I'm not fully versed on the ANSI testing.
Is it national? After the testing is it then up to the AHJ whether or not to accept it?
ANSI is basically a testing/standards organization. It is kind of like a UL rating. Does not mean Diddly Squat to an AHJ. The AHJ should be relying on the various codes. Then we have the manufacturers standards and requirements for their product on top of everything else. IMHO, I think
all water heaters need to be elevated 18" if they are in a garage or other similar location. What can it hurt?