Radiator problems

[horace1]

HELP its doing my ed in
i added 2 rads in my conservatory.
I drained down the system so i could add an inibitor when filling.
I added the Rads and everything was fine
I switched the water back on and added the inibitor after an hour or so after the air was out i opened the LSV and continued to free the air from the bleeds.
Now the Problems start no matter what i do the rads are all aired and not hot, i have tried i think every thing,
if i open the LSV too much then i get a few rads that are cold.
The boiler is well big enough its an IDEAL FF250 not combi, My next door neighbour has done this and has same system
ANY TIPS PLEASE -PLEASE

 

[corgiman]

whats an lsv??

 

[horace1]

Lock shield Valve (LSV)fitted to left hand side

 

[kevplumb]

lockshield

 

[corgiman]

lockshield

ok dad I just never seen it as a LSV before, dont beat me no more

what rads aint getting hot?

 

[horace1]

nearly all of them, i have had to close the lsv to get hot to rads in conserrvatory

 

[Dukie1977]

Hey,

Have you bled the system from the auto air vent?

Also have you bled the pump?

Sounds like you still have air in the system. You can't always bleed all of the air via a radiator as is it not always the highest part in the system.

Rich

 

[tincup]

Hi

Sounds like the system needs balancing properly.


FYI salamander-engineering.co.uk/technicalcentre/faq/faq.htm

HTH

 

[horace1]

As an up date
I have turned all the rads off except the 2 new ones to force pressure through them - they remained luke warm.
I then put hose pipe on to drain some water off and the water started to come out warm.
closed the drain then opened all the rads - the hottest i closed the lv a little until all existing rads were quiet warm - but the 2 in conservatory are 1 warm ish and 1 coldish????
Any help would be appreciated as i am losing it

 

[wilhelm]

invariably.its either air or sludge. .........

.or blocked cold feed

all lerrrnt from this forum ..

 

[horace1]

If air is the problem do i bleed from top?
if slude put an chemical in
What if its a blocked cold feed?

 

[wilhelm]

horace.......life goes on.

 

[horace1]

but not as we know it

 

[wilhelm]

correct. jim.

 

[GasAid]

How have the new rads been connected? Microbore or real pipe?