How To Increase Water Pressure

[HaydnWilliams]

Hi,

As you can see, my water pressure is pretty low on my Worcester Boiler.

The engineer left the flexible filling loop on 6 years ago. Yesterday I had no hot water and an error 227 ignoring ionisation fault. After switching the switch off the boiler overnight, it's now working again, but the pressure is low. Once I turn the tap off, the temperature seems to increase and stay there, currently it's OK 62 degrees. I saved it on 45.

In order to increase the pressure, do I switch the boiler off first before I turn one or both of the black nozzles? Which one do I turn on first?

A step by step guide will be much appreciated.

Thanks guys.

 

[Chuck]

The boiler needs to have been off for long enough for the radiators to be cold, say 30–60 minutes.

Slowly open the left-hand valve keeping a lookout for any leaks from the filling loop. If all is well carefully open the right-hand valve until you hear the water flowing and the boiler pressure starts to rise. Allow the boiler pressure to rise to the 1 bar mark on the scale and then shut both valves.

The pressure when everything is could should be as low as possible while remaining in the green section. It will increase due to the water expanding when the heating is running. If it gets above 2.5 bar, i.e. into the red area, get your boiler engineer to check the expansion vessel.