Boiler refill too often

User2050

I had a Vaillant ecoTech boiler installed 9 months ago.

I just realised that it seems I have to refill the system too frequently, to keep the water pressure above the minimum requirement.
It is about every two months before I need to refill it again using the refill loop.

Is it normal? I was expecting something like 6 months.
I have checked all my radiators and there is no leakage. Could it be there is leakage inside the boiler (though Vailant has a good reputation according to many people)?
Has anyone experience similar problems before? How to check if there is leaking inside the boiler?

Thanks guys

Canucklehead

User2050 wrote: »

I had a Vaillant ecoTech boiler installed 9 months ago.

I just realised that it seems I have to refill the system too frequently, to keep the water pressure above the minimum requirement.
It is about every two months before I need to refill it again using the refill loop.

Is it normal? I was expecting something like 6 months.
I have checked all my radiators and there is no leakage. Could it be there is leakage inside the boiler (though Vailant has a good reputation according to many people)?
Has anyone experience similar problems before? How to check if there is leaking inside the boiler?

Thanks guys

Hi: call your installer.

Canucklehead

macman

Either a leak on the CH circuit (not necessarily on a rad) or a sticking PRV pipe-have you checked outside for a discharge from the PRV overfow pipe?
But since it's under warranty, do as Canucklehead advises.

roger196

Re-pressurising should be at least six months to a year apart.
If you turn off the isolating valves at the boiler for the flow and return pipes for the CH, if there is no pressure drop then the leak is not within the boiler. As you are topping up every two months, the pressure drop over a week is very small. Try this in the summer when the CH system can be left turned off.
More likely cause is the pressure release valve ( or safety valve) not seating properly. There is a twist knob on top which can be used to open then close this valve.

However as this is still within warranty, get the installer back.

ic

I haven't had to re-pressurise my system since it was installed 18 months ago, you have a problem!

cosworth_monkey

To check if it's the PRV letting by tape a sandwich bag over the end of the discharge pipe and after a week see if it's filling with water, if it is....there is your problem. But as said above, call your engineer.