Valiant/megaflo discharge
- Thread starter DanDare
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Congratulations berk, that really is the dumbest statement you have produced so far in your entire "career" on this forum, and that takes some doing; you can start a competition with ^woody^.
The water in a system is still subject to gravity, and therefore the pressure at the bottom will be approxiamtely 0.25 - 0.3 bar higher than it is the floor above.
To the op,
goldberg is not a plumber, or a RGI, and in fact, does not seem to have a job at all. He likes to pretend to be an expert, but has no experience in the heating industry whatsoever; the statement above is just one example of many that demonstrates this.
This one is about as good as your other blunder.
Why don't you tell the op exactly how you imagine doing this in a step by step way?
it gets better
the boy is off is trolley
goldberk said:
the boy is off is trolley
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If the discharge is from the boiler it will only usually happen when the boiler is heating up.
The unvented should have a tun dish immediately after the T&P valve. You can confirm if the discharge is from that by putting a piece of tissue paper through the air gap and seeing if it gets wet!
Now the excessive pressure rise!
Can you count the number of radiators and indicate if they are big or small and single or double panel. Also say if they are special types oither then flat steel panel types. I expect we will find the volume is in excess of the 70 li that the boiler's EXV can handle.
Tony
G
Goldberg
Many unvented installations have a single tundish shared by the cylinder TP&P valve, AND the combination valve, AND the CH PRV (if its mounted near the cylinder).
keep digging pratt your bound to get something right before long
just not yet
just not yet
Someone has to say it so it may as well be me.
The boiler expansion vessel is fine without any need for outside intervention, if anything the vessel is slightly undersized, so don't touch it.
Now for the bombshell, The "Megatech" is a twin coil cylinder for solar and boiler, and unless I'm very much mistaken
it should have an external expansion vessel, and not an internal bubble.Rushes off to find a manual before too many read it.
Based on the evidence admitted so far by the owner, the type of cylinder is probably irrelevant.
A Megatech does use an external 25 litre EXV.
However, this is an owner who confused his 624 boiler with a 428 !
He is even more likely to have confused a Magnatech with a Megaflow !
Tony
A Megatech does use an external 25 litre EXV.
However, this is an owner who confused his 624 boiler with a 428 !
He is even more likely to have confused a Magnatech with a Megaflow !
Tony
no
if you are correct (i don't know TBH)
this could be the cause of your problem
this could be the cause of your problem
G
Goldberg
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