Hi folks , thanks for taking the time to read this 
My mother recently had a new heating system installed (Ideal Classic SE15 FF) with 7 new rads and all new pipework . There was an airlock today and I bled 3 of the 4 upstairs rads . One drew through with no problem but the other 2 were taking an age to bleed . I gave up in the end as there was no sign of anything happening . No hiss of air and only the occasional trickle of water could be heard entering the rad.
I'm a bit concerned that the pressure is very low on the boiler (0.4 bar , even when the heating is on ) . Would this explain why I cant draw water efficiently through the rads when bleeding , or even explain the airlock occuring in the first place ? I cant figure from the manual how to increase the pressure myself (it's a sealed system unit) .
The guy who installed the system insists that 0.4 bar is fine for the system but I always thought somewhere around 1.0-1.5 was standard . I'm no plumber so would appreciate your thoughts on this . I dont want to get on to him about something that isnt his fault !
Following the heating circuit rads 1-4 (downstairs) are fine as is number 5 (first one upstairs . Rads 6 and 7 seem airlocked - hot at the bottom , cool near the top . Rad 8 is fine .
If not the pressure what could I try to remedy this ? Should I just get the installer back out ?
Any input is very much appreciated - my ma is in her 70s and needs this fixed , given the time of year .
My mother recently had a new heating system installed (Ideal Classic SE15 FF) with 7 new rads and all new pipework . There was an airlock today and I bled 3 of the 4 upstairs rads . One drew through with no problem but the other 2 were taking an age to bleed . I gave up in the end as there was no sign of anything happening . No hiss of air and only the occasional trickle of water could be heard entering the rad.
I'm a bit concerned that the pressure is very low on the boiler (0.4 bar , even when the heating is on ) . Would this explain why I cant draw water efficiently through the rads when bleeding , or even explain the airlock occuring in the first place ? I cant figure from the manual how to increase the pressure myself (it's a sealed system unit) .
The guy who installed the system insists that 0.4 bar is fine for the system but I always thought somewhere around 1.0-1.5 was standard . I'm no plumber so would appreciate your thoughts on this . I dont want to get on to him about something that isnt his fault !
Following the heating circuit rads 1-4 (downstairs) are fine as is number 5 (first one upstairs . Rads 6 and 7 seem airlocked - hot at the bottom , cool near the top . Rad 8 is fine .
If not the pressure what could I try to remedy this ? Should I just get the installer back out ?
Any input is very much appreciated - my ma is in her 70s and needs this fixed , given the time of year .
