Central heating system loosing pressure

[Last Plumber]

Why are all you 'gas' people so secretive and operate in such a 'close knit' society? I haven't messed with the 'gas' itself and would NEVER do so. The casing as been removed on several occasions previously for plastering and decorating etc.. Whats the problem here?

If it's such a major issue then why didn't someone have the decency to tell me when I first asked for advice, particularly when trying to locate the expansion vessel?

To be registered as 'gas safe' do you have to abide by equivalent rules similar to the 'hippocratic oath' or enter into a secret 'fraternity' as members of the 'magic circle' do?

https://www.User PlumbersForums.net...legally-work-on-a-gas-appliance-factsheet.pdf


No secrets!

 

[chris301up]

Thank you

I've just read through it, particularly the section shown below, and it doesn't actually clarify if I can take the covers off or not. I don't have to unscrew anything as the panels just 'pop' into place. So are they decorative or an integral part of the appliance? I suppose this is a matter of 'interpretation'?

I'm not going to do anything with it now anyway. Just don't know whether it's worth having a new PRV fitted or, if I can find a way of getting some funds together, replacing it as a matter of course. They are just so expensive!

Can I take the case off my gas appliance?
It depends on whether the case is purely decorative or whether it is an integral part of the appliance.

Decorative casing: These cases can usually be removed by the consumer e.g. can be lifted off or are hinged panels and do not need to be unscrewed. A decorative case can be removed safely by the consumer or anybody else remembering to follow any manufacturer’s instructions and warning labels and making sure you have safely isolated any electrical parts. However, if you are in any doubt, always use a Gas Safe registered engineer.

 

[gmartine]

Integral casing:
Many appliances have cases, which in addition to being decorative, function as a part of the combustion circuit and form an important seal around the gas carrying components e.g. burner, combustion chamber, gas valve etc. If removing the case involves undoing a number of screws, this normally means it is a functional case and it should not be removed by the consumer or a person who is not Gas Safe registered.

The warnings against unqualified casing removal are for your own saftey as you do not have the means to test whether the combustion circuit has been affected.

 

[Last Plumber]

We are not the ‘Gas Police’ and you may be a very competent individual. However, you must understand that it would be foolish for any of us to offer instruction on repairing Gas Appliances to people not deemed competent? Especially on an open public Forum.

It is not a secretive society, more a careful, safety focused one.

 

[chris301up]

Integral casing:
Many appliances have cases, which in addition to being decorative, function as a part of the combustion circuit and form an important seal around the gas carrying components e.g. burner, combustion chamber, gas valve etc. If removing the case involves undoing a number of screws, this normally means it is a functional case and it should not be removed by the consumer or a person who is not Gas Safe registered.

The warnings against unqualified casing removal are for your own saftey as you do not have the means to test whether the combustion circuit has been affected.

As I stated in the post there aren't any screws to be undone. The front just pulls down and the casing just slots on to flat tabs. I cannot say anymore and fully understand what you're saying otherwise.

 

[chris301up]

Integral casing:
Many appliances have cases, which in addition to being decorative, function as a part of the combustion circuit and form an important seal around the gas carrying components e.g. burner, combustion chamber, gas valve etc. If removing the case involves undoing a number of screws, this normally means it is a functional case and it should not be removed by the consumer or a person who is not Gas Safe registered.

The warnings against unqualified casing removal are for your own saftey as you do not have the means to test whether the combustion circuit has been affected.

As I stated in the post there aren't any screws to be undone. The front just pulls down and the casing just slots on to flat tabs. I cannot say anymore and fully understand what you're saying otherwise.

 

[Gasinspect]

I have just had a guy round to have a look at the ongoing issue but he can't seem to locate the expansion vessel recharge valve anywhere.

The only one he can find is located on top of the pump unit, which is the same as a tyre valve, but there is insufficient room to get a air pump to attach to this as there simply is insufficient room

Does anyone know where this may be located or is this the only one within the system?

Doesn't sound like an experienced repair engineer. That is air vent on pump, nothing to do with expansion. Did he try reseting the prv by turning the top? It is spring loaded and sometimes debris stops it shutting. But for a minimum charge would be worth replacing it anyway.

 

[gmartine]

As I stated in the post there aren't any screws to be undone. The front just pulls down and the casing just slots on to flat tabs. I cannot say anymore and fully understand what you're saying otherwise.

Then your screws or fasteners are probably missing.