What type of system do I have?

[David1983]

Hi, apologies as I really ought to know this! I'm changing my central heating controller and it says 'no wiring changes will be required on a fully-pumped system' (replacing Potterton controller with Potterton controller and I'm hoping to use the existing backplate and wiring).

I have a back boiler in my living room and a hot water tank in my sparebedroom upstairs so can anyone tell me which sort of systme I've got?

Thank you in advance! David

 

[seco services]

could be fully pumped or gravity hw and pumped heating.

do you have to have hw on to get heating ?
or can you have hw off and heating on seperate ?

 

[Agile]

Without seeing it we cannot guess.

Most back boilers were installed on a very simple cheap system with just a pump to power the heating circuit and sometimes a motor valve as well to stop and unwanted flow. Hot water was by gravity.

However, it could also be fully pumped but in that case you would have a three port valve or two two port valves.

Tony

 

[David1983]

Thanks guys! I can have the heating and hw on independently of one another and I do have a 3-way valve, if that makes any difference? There is a header tank for the hw (I presume) in the loft by the way.

 

[DP]

It would be fully pumped in that case

 

[mlcinfl]

You have a fully pumped Y-Plan system.