Water Heater ATP discharge line - how far off ground outside

[fortop]

I am installing a new gas water heater in a utility closet which will have an ATP discharge line going through an outside wall and terminating in a 90 degree bend and short pipe pointed down toward the ground. How far off the ground should that termination after the 90 be? Seems like I read a min/max limit in UPC somewhere.

[jimbo]

min 6" max12"

[MACPLUMB 777]

What he said !

[SteveW]

What is an "ATP discharge line?"

[bluebinky]

What is an "ATP discharge line?"

Automatic Temperature and Pressure relief valve discharge line -- I think

[SteveW]

Thanks - figured it was in reference to the water heater's temperature/pressure valve but thought maybe this was something new.