Basement Unvented Hot Water Cyl discharge problem

[Peps]

I need a second opinion on how to handle the gravity discharge on a unvented hot water cylinder that is next to imposible to gravity plumb to the outside as location is below ground level.

Cylinder is located in an under stairs cupboard with a door where there is access to a foul water drain. As the discharge must be visable at both the tundish and the final discharge point can the final discharge be in the same cupboard and can it discharge into say a hopper which is connected via a trap into the foul drain? Is it considered visable when in a cupboard any way? If this is acceptable is it acceptable to discharge into the plastic waste as long as the rest is in metal?

 

[Mike Jackson]

BRE CERTIFICATION BRINGS SIMPLE SOLUTION TO UNVENTED DOMESTIC HOT WATER SYSTEM TEMPERATURE AND PRESSURE RELEASE

Check with your local building control that they will accept this form of discharge.

Mike

 

[Peps]

Thanks Mike

I will speak to the building inspector as well as showing him that doc. Any thoughts about the visability aspects though?

Peps

 

[Mike Jackson]

As long as the tundish is visible you should be okay as it's been approved.

Mike

 

[Lee_H20]

its all cool with the tundish bin visible also the dry trap is ok make sure u got ure 300mm fall after the tundish u can get away wit a m/f elbow on the bottom of the trap sure it makes 300mm altogether m8