Single feed indirect system

[Chris31]

Hi,

I’ve replaced all my radiators and about to fill up, check for leaks and add inhibitor. However, I don’t know if I have a single feed indirect system..

I have two tanks in the loft and have attached a photo of the cylinder. Any advice would be awesome please before I make a mistake!

Thank you!

 

[terryplumb]

The small tank feeds your central heating system .
The large tank feeds cold water to the hot water cylinder ,where it is heated indirectly by the boiler.
Don't know what you are referring to as " single feed" ??

 

[Chris31]

Hi Terry, thanks for the reply.

The inhibitor I bought says ‘not for use in single-feed indirect cylinders’. So I just want to make sure I can use it. Thanks!

 

[terryplumb]

You don't have that system ,and the inhibitor goes only into the central heating system.

 

[Chris31]

Thank you!

 

[flameport]

Single feed = primatic cylinder.
No one should have one of those.

 

[ianmcd]

Single feed = primatic cylinder.

Still see some around here

OP you should change that automatc air vent before you re-fill the system

 

[Chris31]

Thanks, will change it! How would you recognise a primatic cylinder, just curious!

 

[ianmcd]

Thanks, will change it! How would you recognise a primatic cylinder, just curious!

Hot water storage; primatic cylinders

 

[CBW]

I have just found the information shown in the attached on the Gas Safe site.
The implication is that for residential homeowners (not landlords or tenants) there is nor regulation governing the issue of a safety certificate when either installing or servicing gas equipment - is this correct?

Thanks, will change it! How would you recognise a primatic cylinder, just curious!

Guessing by the absence of a tank and no sealed system?