3 Rads in Extension not heating

[WKayani]

Hi

(Dont worry..I have searched the forum and couldnt find anything related).

All rads (3) in the extension have stopped working and I'm not sure where to start looking. All rads upstairs are fine (boiler also upstairs), downstairs rads in living room and kitchen fine, just the ones in the extension....really wierd.

Also, I have a shower room in the extension....hot water flows fine but the Rad in there, will not work either. I have bled them...is there anything else I need to be looking at.

Any advice appreceiated.

W

 

[kevplumb]

 

[traineegasman]

Only being a new engineer to the game, the first question I would ask is: Did you have an original boiler installed to satisfy the needs of your original property?.. Have you added more radiators to your existing system, & not bothered your ar*se to check wether your old boiler can cope with the extra demand??
Probably need a bigger boiler...

 

[WKayani]

Trainee

Fair comment and I should have added some more info....

Old boiler was about 15yrs old (60,000 BTU boiler) and ALL Rads worked fine.
New Boiler is a Worcester Bosch 35CDi....been told more than enough to work ALL Rads.

NO MORE Rads added to the exisiting system - just a more powerful boilers (although a Combi and previous was gravity fed).

 

[Bahco]

Try a balance.

Try here

 

[doitall]

the first question should be did it work before or sometime in the past

 

[traineegasman]

If everything worked before the new installation, balancing may be a problem, not a huge difference, I would suspect..I`m waiting for Kevplumb`s diagnosis..

 

[kevplumb]

till i know exactly whats what son you will wait till hell freezes over

 

[WKayani]

Thanks for all the response....

Will try the balancing act this week....on the link, it states, "you may have an airlock in the pipe work"....how do I go about checking that ?

 

[doitall]

the first question should be did it work before or sometime in the past

answer please

 

[kevplumb]

worked wondefurlly 20 rads on a 50'000 btu boiler and the hot water

was brill
just cos i changed the bog seat what has gone wrong

(confused of artlepool) pronounced not spelt

 

[WKayani]

Worked fine before installation.

 

[doitall]

Worked fine before installation.

not a balancing problem then.

try for air by turning all the other rads off and opening the extension rads one at a time

what size pipes have you connected the new rads with

 

[doitall]

just read it again, worked ok before installation

did the new rads ever work