Hi all,

I removed a radiator to do some diy and had a problem with the TRV, as
a result my CH system lost a few bowls of water.

I have now refitted the rad but my Worsester-Bosch Greenstar 42 CDI is
showing zero pressure.

Will it take some time for the pressure to build? Or do i need to
repressurise my system. There's no water tank in the loft so i
presume i have sealed system and need to open a tap to refill it.
Does anyone know where this is located on this boiler.

Thanks all,
Bob