Discuss Megoflo has no tundish! in the Plumbing Jobs | The Job-board area at PlumbersForums.net
When I had the unvented course, the discharge was an important part, but recently i have seen two 'Megaflo' system with no Tundish, the 15mm discharge pipe is directly to outside, is this ok or a cowboy job?
cheers
Whoevr did these jobs is either not G£ qualified and doesn't know what a tundish is or they did the job and realised later and couldn't be bothered installing it. The D" pipe has to be minimum of 22mm anyway did you say it was in 15mm?? If so is there two one PRV & One TRV? or are both tee'd to 15mm/
The main purpose of the tundish is to allow a secondary means of relief in the event the d2 becomes blocked (eg it could freeze up if it is discharging slowly in winter).
ahhh so thats the main reason for it, I did wonder since if you open a relief valve water lashes out of it and all over the floorThe main purpose of the tundish is to allow a secondary means of relief in the event the d2 becomes blocked
I may be wrong but i have just take my unvented course around 2 months ago, A question came up asking what the reason for a tundish is for and should it be fitted. The answer was a tundish should always be fitted, for the main reason that the prv and tprv can be seen when discharge as if the d2 runs into a drain there is no way of telling if it is dischargeing, and the 2nd reason is it reduces the mains pressure down to a lower pressure, and gravity takes over, and opens it to atmosphere and cools down the water as you dont want 90 to 95 water dischargeing down a wall or down a drai. I got 100% so it musta been rightThe main purpose of the tundish is to allow a secondary means of relief in the event the d2 becomes blocked (eg it could freeze up if it is discharging slowly in winter).
the 2nd reason was to turn mains 3.5bar usualy from pressure to lower pressure gravity and atmospheric to reduce the temp and pressure to discharge safley. I got 100% so it musta been right
I think I know what you mean. It provides an air relief so that it reduces the pressure(pull) in the D2 pipe allowing the discharge to run more freely. It will not reduce the temp. to any degree though. If the D2 pipe run is quite short and the T&P valve blows off at 95°C it is still going to terminate at maybe 80-90°C.It reduces the mains pressure down to a lower pressure, and gravity takes over, and opens it to atmosphere and cools down the water as you dont want 90 to 95 water dischargeing down a wall or down a drain. Maybe worded incorrectly. But its what my unvented book states.
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