Megaflow Cylinder Problem

[Riley]

Diy?

 

[Chalked]

Money on 2 port fitted wrong way round

Pic says not :45:

 

[j0n35y]

Definitely sure it's from inside the cylinder and not from the coil pipework/2 port valve?

I'm pretty sure, heard the noise when I was next to it. Didn't seem like it was coming from anywhere else, but I could be wrong...

 

[j0n35y]

Hi Allan
The problem is almost certainly with the pressure of the hot water not the heating. Did you have a older Megaflo replaced with this new one? As that would go someway to explain why there is an old composite valve set installed on the cold feed instead of the new one supplied with the new cylinder.

It is is old enough for it to have started to fail, the balanced cold supply has also been installed incorrectly (as there is no back flow protection.

Try to get installer back to install the new valve set supplied otherwise unfortunately you will need get a G3 pro in to install new one & alter the pipe work. No good calling Megaflo as incomplete / incorrect install.

Hi Chris, yes we did have an old Megaflo, was similar model I believe. I'm honestly not surprised, I would never recommend him to anyone. If the noise is still there tomorrow that will be my next thing to look at. Thanks alot

 

[chris watkins]

Why change a Megaflo ? they have life time warrantee on the tanks, you only needed to replace the control valve set.

I know these things inside out you will need to get that valve changed & small amount of alteration to pipework.

unfortunately now you know why it is so important to only use persons who hold the Part G / un-vent ticket (ask to see it before they start), as required by Law.

 

[j0n35y]

Why change a Megaflo ? they have life time warrantee on the tanks, you only needed to replace the control valve set.

I know these things inside out you will need to get that valve changed & small amount of alteration to pipework.

unfortunately now you know why it is so important to only use persons who hold the Part G / un-vent ticket (ask to see it before they start), as required by Law.

It was only meant to be a boiler change. I asked him to check the system and he said that there where signs of a past leak on the tank showing me some white chalky marks around the bottom lip. We agreed to have it replaced but he never once said it was under a guarantee, just wanted more money out of me. :cuss:

Anyway I adjusted the bypass valve last night from 0.2 to 0.1 bar and still got a few pops this morning from tank. I adjusted it again to 0.6 bar and didn't get any noise when it came on this afternoon. I've now put it to around 0.4 bar this evening and still no noise. Could this really have been the culprit?

Also I don't think the Cold Water Combination Valve is faulty as I read you loose pressure when the spring goes and the pressure is great all round the house especially the mixer shower. Also the relief valve on the other side seems ok.

Definitely will get them changed soon seen kits online for around £140.

Thanks for the help.

 

[chris watkins]

It was only meant to be a boiler change. I asked him to check the system and he said that there where signs of a past leak on the tank showing me some white chalky marks around the bottom lip. We agreed to have it replaced but he never once said it was under a guarantee, just wanted more money out of me. :cuss:

Anyway I adjusted the bypass valve last night from 0.2 to 0.1 bar and still got a few pops this morning from tank. I adjusted it again to 0.6 bar and didn't get any noise when it came on this afternoon. I've now put it to around 0.4 bar this evening and still no noise. Could this really have been the culprit?

Also I don't think the Cold Water Combination Valve is faulty as I read you loose pressure when the spring goes and the pressure is great all round the house especially the mixer shower. Also the relief valve on the other side seems ok.

Definitely will get them changed soon seen kits online for around £140.

Thanks for the help.

OK thats find, you have just confirmed it for me, I suspect you either have or will attempt DIY, which as I have already stated is against the Law. So no more help from me & I would hope anyone else on this forum.

Get some one in who understands both the Megaflo's & can re- set a heating auto by-pass.

 

[Neil K]

+1 for Chris Watkins

 

[JCSPLUMBING]

An Auto bypass has to be set correctly. You may have turned it off or close to. If you have then bye bye boiler