System failiure or a numpty?

[Killy Bing]

http://www.ukplumbersforums.co.uk/n...-collapsed-hot-water-cylinder.html#post611572

imploded horizontal cylinder.

only place ive really seen them has been in loft eves

SO does that mean they have actually installed a unvented one on solid fuel.
not had it serviced so the expansion vessel is flat

they have now ramped fire right up and boiled the cylinder.
seen the tprv running outside and turned the water off imploding said cylinder?

Any thoughts?

 

[gassafe]

I did wonder if its an unvented cylinder, I'm not too familiar with horizontal cylinders... Never seen one even!

Too many questions to ask, unless the op comes back with some pictures!? Maybe it was a disaster waiting to happen with these uncontrollable heat sources!! They could have switched off the heat sink rad or maybe there never was one?

 

[Killy Bing]

I did wonder if its an unvented cylinder, I'm not too familiar with horizontal cylinders... Never seen one even!

Too many questions to ask, unless the op comes back with some pictures!? Maybe it was a disaster waiting to happen with these uncontrollable heat sources!! They could have switched off the heat sink rad or maybe there never was one?

If it was vented it would vent over and out the overflow on both tanks without a heat leak i would imagene.

unless they were running a shower for ages with a blocked vent.
if the fill rate couldent keep up with the take off

 

[Mike Jackson]

I'm wondering if a pump has been connected to the top of the cylinder blocking the vent.

 

[Dotty]

http://www.ukplumbersforums.co.uk/n...-collapsed-hot-water-cylinder.html#post611572

imploded horizontal cylinder.

only place ive really seen them has been in loft eves

SO does that mean they have actually installed a unvented one on solid fuel.
not had it serviced so the expansion vessel is flat

they have now ramped fire right up and boiled the cylinder.
seen the tprv running outside and turned the water off imploding said cylinder?

Any thoughts?

Good hypothesis there young Frodo. Pictures from the op would help.

 

[Killy Bing]

I'm wondering if a pump has been connected to the top of the cylinder blocking the vent.

Hmm, he did say two pumps with one connected two places on the hot?
One for the cold
Could have connected a twin impeller up to two places on the hot and then to the single hot pipe?
as you say vent and take off

but i can only imagine a complete idiot doing that??!!

 

[IDCHAPPY]

I'm wondering if a pump has been connected to the top of the cylinder blocking the vent.

Possibly, maybe cutting out the vent totally if it's in from the top of the cylinder andand then straight out to the outlets?
You'd have to be pretty stupid to do that though?

 

[Ch4 plumbing]

The way I read it is theirs a pump on the cold main into the cylinder and a pump on the hot outlet? I think it's also an unvented splinter but it's all speculation.

The only thing that has been done to the system since I moved in two years ago is I had two pumps fitted by a plumber to help with low pressure on the cold an hot warer feeds. There are two pumps in the loft and it looks like one is connected to the hot water cylinder at the top in two places.

The pump being connected "twice" could be the hot outlet and the secondary return?

 

[Ch4 plumbing]

I meant cylinder not splinter!!

 

[SafeGasInstall]

This one is going to be really really interesting once he come back with pictures ! Pls don't have a go at the man until we see the pictures

 

[Rickster123]

This one is going to be really really interesting once he come back with pictures ! Pls don't have a go at the man until we see the pictures

You mean lets lure him in with a false sense of security? I like it!

 

[Killy Bing]

This one is going to be really really interesting once he come back with pictures ! Pls don't have a go at the man until we see the pictures

Tis why i opened the arms thread!!
i want to see the outcome.

 

[IDCHAPPY]

You mean lets lure him in with a false sense of security? I like it!

:lol: your bad