gravity hot water

[GAZZA19]

heating working fine on pump but cant get cylinder to heat up for hot water which is gravity

 

[Simon F]

just to confirm there are 4 pipes from the boiler?
2 28mm pipes to the hot water cylinder yes?

the boiler is working no problem, what is left?
blockage or air lock on the gravity circs

 

[GAZZA19]

yeh 4 pipes from boiler 2 22mm and 2 28 mm to cylinder cant think of anything else than airlock or blockage like said

 

[Simon F]

have you checked the F+E tank and float valve?
( comes in under the airlock possible issue )

 

[GAZZA19]

no i hav`nt been to check will check tom thanks but i drained the system down to fit new rads and it filled back up because i bleed all the rads

 

[lame plumber]

airlock then, try draining and filling via a doc to push air out as it fills

 

[Ollieg]

Also depending on pipe layout you can blow down the expantion pipe and try to move the air.
Works a treat when it works and saves alot of time.

 

[willys warmer]

Try bubbling the system ! Be very careful ! Remove boiler stat and listen for the air going through the circs. Replace stat hey presto !

 

[Dotty]

Try bubbling the system ! Be very careful ! Remove boiler stat and listen for the air going through the circs. Replace stat hey presto !

Not recommended unless you are in the game, competent, and know EXACTLY what you are doing.