TPR valve

[acox]

Just finished with this home - it's in great shape, but found this...that's the top of an electric water heater. This is as close as I could get because the owners have storage shelves in front of it. How can I report this... ?

[Michael Larson]

Originally Posted by acox

Just finished with this home - it's in great shape, but found this...that's the top of an electric water heater. This is as close as I could get because the owners have storage shelves in front of it.

Do you have a question?

[acox]

Sorry, I was in the process of editing my post - I went back and realized it didn't make sense. Any suggestions for wording the report?

[Michael Larson]

I see a nomal install if the overpressure device at the top is permitted in your area. That device takes the place of a bladder type expansion tank.

[acox]

OK - I haven't seen this before. I just wasn't sure if it could be tied to the TPR outlet.

[Michael Larson]

More information here

[acox]

That helps alot - Thanks for the info!

[Jeffrey R. Pope]

The TPR discharge must be separate from any other system. It appears to be tied into the other PR valve with a T-fitting.

[Jason A. Sieg, CMI]

Originally Posted by jpope

The TPR discharge must be separate from any other system. It appears to be tied into the other PR valve with a T-fitting.

I agree, I thought that TPR discharge had to go directly to the floor with no T-fittings at all.

[Jeffrey R. Pope]

Originally Posted by jsieg

I agree, I thought that TPR discharge had to go directly to the floor with no T-fittings at all.

Not necessarily "to the floor," but no T-fittings are allowed in the discharge piping. . .

[Jason A. Sieg, CMI]

Originally Posted by jpope

Not necessarily "to the floor," but no T-fittings are allowed in the discharge piping. . .

Yes, I skipped a bit of info didn't I.

[mthomas2]

Direct link to the Watts installation instructions:

http://www.watts.com/pdf/1910868.pdf

[tdietrich1]

Originally Posted by jpope

Not necessarily "to the floor," but no T-fittings are allowed in the discharge piping. . .

Not to beat you up, just like to have references, do you remember one? See "common sense" is ofen not good enough.

tom

[Jason A. Sieg, CMI]

They may drain to outside. It should still terminate < or = to 6", or to at drain pan.

[Jeffrey R. Pope]

Originally Posted by tdietrich1

Not to beat you up, just like to have references, do you remember one? See "common sense" is ofen not good enough.

T-fittings are not specifically addressed, so the intent is somewhat subject to interpretation.

P2803.6.1 states "The discharge from the relief valve shall be piped full size separately to the floor, to the outside of the building or to an indirect waste receptor located inside the building."

So I guess one would have to ask, what is the purpose of a T-fitting?