new hot water outlet

[desrob]

a friend of mine has put a basin right next to the hot water cylinder and says that he wants the basin hot water tap tee'd into were the hot water outlet is on cylinder,i'm under the impression and what i can remember there's a minimum distance before vent,i've seen piping arrangement to intrduce a shower, but not sure he can just t in before vent.advice

 

[samh]

I don't think you can Tee in before the vent cause otherwise any steam would just try and come through the tap.
I'll get my textbooks out and find out.

 

[mikeygas]

The minimum distance of the rising horizontal pipe (i.e hot water draw-off at top of cylinder) to the vent pipe is 450mm min. I think you would be okay to tee into the pipe before the vent as when fitting gravity shower's this is where you can do a take off. If you do this the have the tee underneath the piped dropping down vertically so that you don't get an airlock.

 

[desrob]

I don't think you can Tee in before the vent cause otherwise any steam would just try and come through the tap.
I'll get my textbooks out and find out.

yeah i'm surev your right i think 450mm to vent rings a bell

 

[desrob]

The minimum distance of the rising horizontal pipe (i.e hot water draw-off at top of cylinder) to the vent pipe is 450mm min. I think you would be okay to tee into the pipe before the vent as when fitting gravity shower's this is where you can do a take off. If you do this the have the tee underneath the piped dropping down vertically so that you don't get an airlock.

yes i've seen a similar arrange ment,

 

[mikeygas]

Samh that's why draw-off is underneath as any steam will rise upwards through the vent pipe.

 

[samh]

Samh that's why draw-off is underneath as any steam will rise upwards through the vent pipe.

Cheers 🙂 I'll remember that

 

[mikeygas]

Also, if you had the pipe running vertically up then there's a chance of getting it airlocked where it elbow's off.

 

[desrob]

is there anything to be gained from piping from tapping i;m thinking flow rate as the outlet could possibly be higher than cylinder and about 300mm from base of cold water storage tank

 

[fuzzy]

a friend of mine has put a basin right next to the hot water cylinder and says that he wants the basin hot water tap tee'd into were the hot water outlet is on cylinder,i'm under the impression and what i can remember there's a minimum distance before vent,i've seen piping arrangement to intrduce a shower, but not sure he can just t in before vent.advice

take the tee from the bottom of the pipe, if you take it from near the vent it will draw air in and air lock all the time