Boiler Indicator - Pressure Decreasing?

EliteHeat

thor wrote: »

I've got a vaillent eco-max and it loses all pressure within a couple of weeks of it being repressurised. I am also quite lazy and quite often leave it at zero bar for months on end. The reason I can do this, is that the boiler runs perfectly ok regardless. I know it does not make sense but for some reason it can operate with no water pressure. Is this supposed to be possible?

Some combi boilers can run on an open vented configuration. So yes, it is possible. Never installed one though.

Kavanne

I just looked at the boiler and the pressure is back up to 0.9!! What's going on!

I booked in a service for end of Jan. It was last serviced when we bought the flat in May 08 so I guess it is time for another one even if boiler looks OK?

Mankysteve

As the presureised stuff is for the raditors it should affect your hot water.

Tucker

Kavanne wrote: »

I just looked at the boiler and the pressure is back up to 0.9!! What's going on!

I booked in a service for end of Jan. It was last serviced when we bought the flat in May 08 so I guess it is time for another one even if boiler looks OK?

When the heating is running or has been on, the pressure is generally higher as it increases with the temp.

You need to compare it when it's stone cold, to know the actual pressure.

thor

EliteHeat wrote: »

Some combi boilers can run on an open vented configuration. So yes, it is possible. Never installed one though.

What is "open vented configuration" ?