EXPANSION VESSEL INSTALL - Plumbing Tips

This video will tell you how to install an expansion vessel on a pressurised heating system. It doesn't tell you the principles of a heating system though. Just how to install one.

***VISIT OUR SPONSORS***

[markmccall]

Homeowner question. When pressure gauge is low (or zero) on the expansion vessel, how do you know when to use the schrader valve (and pump), or the filling loop taps?

[mrblack]

Just fitted an expansion tank to my sealed system and I now have stable pressures! Always check in on your channel before I get mi hands dirty. Knowledge and lulz! Whats not to like!! Cheers bud 8)

[mibutties]

You’re a brave man drilling directly above a consumer unit

[stevencline]

This is a great help. I have a couple questions regarding expansion tanks: 1) How do you know when/if an exp tank needs to be replaced? 2) How often should they need replacement? 3) Is replacing an existing tank something a mechanically-minded indiv can handle? Thanks again...you have a great and helpful channel!

[birdwing]

Some tanks experience dripping or jets of water when the diaphragm fails.  I would not mount a "dripping/wet tank" above the electrical components on the wall, unless there was no other choice.  Q:  Do you earn more if you can route the pipe using more elbows?

[shaun]

really useful video. fitted my 1st one yesterday with the gaffa stood over my shoulder watching. joys of being an appreciate. hold tight..

[lgmckenna]

Tip. Bend the pipe first all in 1 then mark the wall for clips. Fits perfect, looks great, saves time, elbows, etc and nothing to leak

[shahirhunaina]

Many thanks for the entertaining/informative video. I have a qualified Gas safe plumber doing the work for me, but it is nice to know what to expect. Keep singing & be happy!

[nigelmitchell]

Do you need to allow water up to the connection with the expansion vessel.? Many thanks for posting, this looks a simpler job than replacing the one in my WB Greenstar junior.

[Harmonical]

James - I have an awful problem with our central heating. Ariston System Boiler failed and Ariston engineer repressurized the expansion vessel to 1 bar.  Started working again but way below par - radiators cool, DIFFERENT ones completely cold - NOT always the same ones. Had system power flushed and all the water was absolutely clean and clear - looked okay to drink! The rads were even cooler and worse after the power flush. Hot water has always been fine.

I suspect air is getting into the system - all rads bled but the WATER in some seems like soda water and fizzes a bit - I haven't drunk it. I think that it's the boiler - either the pump not running properly or could air be getting into the system? Ariston engineer refused to accept that it's their boiler - of course it's still under the Ariston 'Guarantee'!

Would really welcome your unbiased view.

Cheers.

[joshplayspoor]

next time you get a job like this is there any chance you can show us how to bung the expansion vessel that is already in the boiler if it has failed thanks !

[ljones]

Another interesting vid! Have no intention of fitting one - but had to watch it anyway, ha! And if it's any consolation - I've heard much worse singing!

Keep us posted! Stay classy!

[marianne]

Hi, I have to bleed several rads daily since putting new joints and new rads in rooms. Could the expansion tank be full of air and how do I bleed please?

[mr.dahliaking.]

in Europe we don't use a cooper pipes anymore (the old soviet technology), we are using the plastic-rubber mixed pipes, that needs just a bit of heat to weld together and no need any things like fire torch and solder, and no risk of fire!

[tellylgeorge]

Hi James. Love the video. Really helpful. Can I ask though. Have you fitted many EV’s to hollow plasterboard walls and if so what fixings do you use please? Mine have worked loose thanks to the contractors using plain rawl plugs believe it or not. I’ve put a few TVs on the wall using snap toggle fixings and hollow wall anchors so was thinking they will work ok. Just wondering what your thoughts are.

[jeffking]

Hey mate, love your videos; they are so helpful. So this is a thank you for all the help you’ve given me and my wife’s well impressed too, trouble is she’s lining up more and more jobs for me! I also hear you are a Jazz fan, what sort of stuff do you like?
Jeff

[liljasere]

Just a heads up mate, I know you were only replacing what was there but because of the large amount of water in oil boilers the expansion vessel is very undersized (why the one in the video went most probably) in every instance we have installed one we needed to add an additional one on the the system, It's a pain in the arse but when I went to grant I asked why and they told me they just cant physically fit a big enough one in there

[valentinmirauta]

Hello
Can you do a video how you size up expansion vessels?
Thanks

[leexgx]

i personally would not have the vessel close to the sunny boy solar inverter (that is around £300-£1000 to replace) even though it is IP65 or should be any way, interesting video of how an Expansion Vessel works

[AndrewBristol]

Brilliant compilation of video's, I watched several just out of interest... My question, I have a gravity fed system with a Albion super duty 45ltr tank, Since bathroom refit and going to a single mixer tap we have very very low water pressure on my hot tap in the bathroom but fine downstairs (kitchen tap) now I know downstairs is lower and gravity etc, but I think the problem lays with the bathroom tap and its tiny little pipes that go to the tap from the 15mm feed pipe approx 30cm away from the tap itself. Is there anyway I can boost the pressure of the bathroom tap by fitting an expansion vessel of some kind into the hot water feed side of the tank ? OR would cost and effectiveness say its better to change sink and go back to two individual taps (old school set up). Thanks