replacing a copper cylinder

[Dannypipe]

Just remember the golden plumbing rules.

1/ Isolation
2/ Isolation
3/ Isolation.

The amount of times I've forgotten those!!

 

[Best]

DIYBlues, - agree, it is a free country for anyone to do those jobs that aren't regulated, & all of us have worked at tasks that are a bit beyond us. Plumbing is a fairly skilled job IMO, so I think a good plumber doing the work will be worth his few hours pay. It is madness for someone who can afford a plumber, to try & save a few quid, & probably cost themselves more trying to get the job done & also risking doing it badly wrong. Very few diyers know much about making joints or other basic plumbing stuff, but a lot think they do, hence the DIY mess in a lot of homes.

 

[Puddle]

Please note some posts have been removed from this thread ,as off topic,if members wish to debate other topic's and issues,please start new thread or post in relevant existing thread

Please only post in a thread if you can contribute to issue concerned otherwise please just move on

Thank you

 

[TBServices]

I PERSONALLY see a cylinder swap as too demanding a job to take on for a DIY enthusiast.

As a professional I can honestly say that we can spot a DIY job a mile off, and usually, when we're inevitably called in to rectify a problem, it's made a lot more difficult by the nature of the dodgy install and will generally end up costing the householder more in the long run.

People seem to have this attitude that somehow, because it's not heavily regulated to the extent of say, gas/electricity, plumbing is easy, but it's not. To do things the right way takes time and experience. Plumbing and tiling a new bath in wrong may not kill you, but it will probably wont last, and it might cost you a new ceiling at some point.


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[Osp]

Screwfix also do cylinder unions IIRC.

I'd be inclined to put full bore lever valves on the primary flow and return (WRAS approved, not cheap rubbish). As well as making future repairs quick and easy, this allows you to turn the heating back on while you work - keeps the family happy and lets you take your time and work in comfort with the rest of the cylinder install.

If you want to do the job properly, don't forget to balance the new cylinder with the central heating - i.e. throttle back its primary flow until its primary return temperature matches the design (radiator) return temperature. Check this when the system is up to temperature and the water in the cylinder is cold - hot taps running. I see plenty of systems where some rads take ages to get warm because the DHW takes most if the flow until it gets up to temperature. (This doesn't apply if you have an old three-port water priority system.)