Grohflex rough in box upside down

[Jeffn3545]

I finished roughing in my bathroom yesterday and pressure tested successfully. Today I was cleaning up and getting ready to install Kerdi board and noticed that I installed my Grohflex universal roughin box upside down... cold line is plumbed to the hot side, etc.

I'm glad I found this out now but was wondering if it matters. The box fittings are just passing through to the cartridge, however I am not certain as to whether the cartridge has specific north/south pattern.

Before I take it apart and burn a few hours getting it repositioned, I wanted to ask here for advice and guidance.


Thanks

 

[Terry]

It looks like you may be okay with that.

 

[Sponsor]

 

[Jeffn3545]

thank you

 

[Jcran17]

thank you

Did you end up flipping it around? If not, did it work fine?

 

[Jadnashua]

The two outlet ports are different sizes. In a tub/shower, you do want it oriented properly because you want the tub to fill as fast as possible from the larger port. FOr a shower only, it really doesn't matter as long as the body is not keyed so the cartridge can only be inserted one way, or the handle would be 180 off.

 

[LLigetfa]

The two outlet ports are different sizes. In a tub/shower, you do want it oriented properly because you want the tub to fill as fast as possible from the larger port. FOr a shower only, it really doesn't matter...

I'm not familiar with that model but my Delta rough-in has a smaller port for the shower. I think if it were reversed in a tub/shower with popup diverter that using the smaller port for the tub filler could cause the shower to dribble while the tub was filling.

In my case, I used it on a shower only install so I reversed it so the larger port went to the shower and capped the smaller port.

 

[Jadnashua]

Yes, in a tub/shower configuration, if the smaller port fed the tub spout, you'd likely always be getting some water out of the showerhead. In a shower only, unless you've got multiple showerheads, it doesn't matter, but won't hurt to have the larger port feeding them.