Vokera Linea 28 Combi.
I recently emptied the central heating so as to renew a couple of radiators.
When I refilled the system, the automatic air release valve (item 25 on page 1 of the Linea 24 & 28 Installation and Servicing Instructions manual) badly leaked water out of the top adjustment screw.
The only way to stop the leak was to tighten the screw down.
Prior to carrying out the work, when I pressurized the system to around 1 bar and then ran the central heating system, the pressure increased to between 3 and 4 bar.
No safety valve ever blew.
After fitting the radiators, with the screw tightened down to stop the leak, when running the CH the pressure now only rises to about 2 bar.
Also subjectively the radiators actually feel a lot hotter (cold pressure again was 1 bar).
There are no leaks or pressure drops in the system.
Please could you tell me what the problem is and how to sort it out.
Many thanks in advance
Nick
I recently emptied the central heating so as to renew a couple of radiators.
When I refilled the system, the automatic air release valve (item 25 on page 1 of the Linea 24 & 28 Installation and Servicing Instructions manual) badly leaked water out of the top adjustment screw.
The only way to stop the leak was to tighten the screw down.
Prior to carrying out the work, when I pressurized the system to around 1 bar and then ran the central heating system, the pressure increased to between 3 and 4 bar.
No safety valve ever blew.
After fitting the radiators, with the screw tightened down to stop the leak, when running the CH the pressure now only rises to about 2 bar.
Also subjectively the radiators actually feel a lot hotter (cold pressure again was 1 bar).
There are no leaks or pressure drops in the system.
Please could you tell me what the problem is and how to sort it out.
Many thanks in advance
Nick