No drain off tap on hot water cylinder...new cylinder required?

[psychopomp1]

Hi,
A few days ago I was getting a tiny water leak on my Range Tribune HE hot water cylinder, i called a plumber, he ascertained the immersion heater was faulty (corroded) and needed to be replaced. He told me afterwards there's no drain off tap on the cylinder so he pulled the immersion coil out which caused the water to gush out, come through the ceiling and nearly flood the kitchen downstairs. The plumbing company have agreed to fix the damage to my property at their own cost. In the end they managed to get a new immersion heater installed.

My question is, to stop this happening again do i need to ensure i have a drain off tap fitted to the cylinder/pipework and is my only option to buy a new cylinder? The cylinder was installed By Barratts homes when i bought the house in Nov 2008, obviously Barratts don't want to know now (only offer a 2 year warranty). NHBC 10 year warranty won't cover this as water cylinder is classed as a fitting/fixture. Perhaps if my plumbing knowledge was more than zilch then i would have noticed this far sooner, so need to know what are my options now.
Thanks

 

[Jay The Plumber]

I want to know if he even attempted to catch some of the water

yea, with the electrical enclosures perhaps 😀

 

[SmokeyJ]

If the plumbing company has any sense mikey the plumber will be unemployed not coming back to remove your cylinder. Guys crazy

 

[Radioman]

I wouldn't pay anything at all, in fact down here he or they would be lucky not to end up in court. At least with a massive claim on your public liability.

 

[GasmanxxxR1]

I wouldnt worry too much about the cylinder falling through the ceiling, it wont fit between the joists!

 

[Stigster]

Is that another appliance teed into the D1 expansion relief pipe?

 

[Riley]

Would imagine it's just the PRV from the block

 

[Riley]

Sorry see what you mean now. Yes it does. I'm guessing PRV for boiler if its above

 

[GasmanxxxR1]

probs prv from heating

 

[Stigster]

Sorry see what you mean now. Yes it does. I'm guessing PRV for boiler if its above

Thanks for the reply. I am in fact trying to interpret this as found in the MI for an unvented hot water cylinder.

3.53 Where valves other than the temperature and pressure relief valve from a single unvented hot water system discharge by way of the same manifold that is used by the safety devices, the manifold should be factory fitted as part of the hot water storage system unit or package.

What is the "factory fitted" manifold of which they speak?

Sorry if I'm missing something obvious. I have my UHW10 as required by the Approved Document G3 but I have not had to combine more than one appliance into the discharge system and wish to understand this requirement.

 

[Knappers]

No idea?

I used to do immersions live quite often and they were 9KW ones on 2000ltr cylinders.
They were in tanked external plant rooms though!
would gently undo then quickly rip out and offer up 4'' waste to direct water out the door.
Cut a days work to 2-3 hours (need a change of clothes too).

Things are very different now!