Thanks all, as I have managed to re-pressurise the system to 1 bar, hooray. The isolator valve was installed without a 'plastic lever', so i got a spanner to open it.
Now however, when the boiler fires initially (for either CH or DHW) it burns for around 5-10 seconds and then cuts out, i then...
apologies, I assumed the 'cold inlet' was used to top up the system, my mistake.
I have now identified the actual filling loop diagram, and it is actually a flexible hose that connects to the 'CH return', the filling loop is isolated using a stop valve at either end with a double check valve...
Thanks ChrisR
Am pretty sure I have the right tap as the diagram in the service manual labels it 'DHW Cold Inlet'.
I will try your suggestions tonight and get back to you.
best regards
dj
I have a 2 year old Ideal Mini C24, just out of warranty.
The water pressure is at 0 bar and subsequently the boiler is firing but cuts out after a short period of time.
I have located the cold water inlet, which appears to have been installed with a 'blue' valve below the boiler unit...