Is this appropriate plumbing for the Tundishes in our system.

[MikeSharp01]

We have two Tundishes (Only one un-trapped version in the picture but two new trapped versions have arrived today and will be fitted tomorrow). I have roughly plumbed them to arrive at what I think of as a good layout, see pic. (The plastic is just to get the dimensions right it will all be copper.)

 

I have / would like to join the control group overpressure relief flow and that for the heating circuit overpressure together to one Tundish. It will be easy to workout which is flowing as they are on different circuits and the relief pressures differ significantly. The other Tundish will be exclusive to the Pressure / Temperature relief on the tank. Both then drop in 22mm to 28mm copper and then be routed to the drain in 28mm JG Speedfit plastic pipe. The runs to both Tundishes are less than 600mm the copper and JG pipe are both proof against the max output temperatures. 

 

I still need to figure out how to get from 28mm - to something I can connect to the soil pipe. so any thoughts on that gratefully accepted.

 

[Nickfromwales]

26 minutes ago, MikeSharp01 said:

It will be easy to workout which is flowing as they are on different circuits and the relief pressures differ significantly.

Won’t matter one jot. It’ll be a pita to work out as they both just dribble out, not open full wallop. 

[Nickfromwales]

This bit of pipe needs to be longer. 
 

 

The water zooming around that bend will still be doing loop the loop, so will want to spray into the tundish vs fall straight into it.