how and what to do

[neillymac]

my heating is ofch, my problem is all the piping to my rads are micrabore and 2 out of 7 don't get any heat and it is constantly blowing over in the attic,my hot water tank is down stairs, boiler in the garage,and cw tank in the attic with f&e,what is i can fit to help the pressure i think it is called an expansion vessel???i have tried turning all the rads off bar the 2 that don't work putting the pump on full but still no heat.

 

[Terrywookfit]

The crystal ball does not appear to be working again !!

 

[neillymac]

????

 

[Terrywookfit]

What are you trying to do ??

 

[stardanny]

Do you mean water pumping over in f&e?

 

[neillymac]

yes i have edited my post to maybe clarify a bit better

 

[ChrisR]

ofch ??

Sounds like it's blocked. Did it always pump-over?

 

[stardanny]

name of boiler, please and what system, do it have motor valves?

Sound like blocked pipe. Microbore are small pipe which get blocked easily.

 

[neillymac]

ofch ??

Sounds like it's blocked. Did it always pump-over?

i changed the boiler and pump,it has always pump over but these rads did work before new boiler went in

 

[neillymac]

name of boiler, please and what system, do it have motor valves?

Sound like blocked pipe. Microbore are small pipe which get blocked easily.

the boiler is worcester bosch 50/70
dont know what you mean system???

 

[Terrywookfit]

SO you have an oil fired W/B on an open vented system .

You do not need an expansion vessel !

IF as you say it has always pumped over ,the problem is probably due to sludge which was disturbed when you drained down the system !

Was the old boiler leaking by any chance ??

 

[neillymac]

the boiler was not leaking no just really old ,so how do i get rid of sludge??

 

[DP]

Pay someone to do it for yoiu. Clearly, your post highlights gaps in heating/ systems knowledge. It would be prudent to engage services of an acredited proffessional who comes highly recomended (friend and family).