No filling loop and red expansion vessel installed. How to represurrize heating?

[Stigster]

Looks like 3 cables to me

3rd'd! Them are cables.

 

[chris watkins]

That looked like 2 cables to me!

Looks like 3 cables to me

3rd'd! Them are cables.

Christ you've got good eyes Chris. I am only looking on my phone though.
If you have a tank in the loft it won't be a sealed system. Where is the expAnsion vessel?

OK, OK I take it all back :blush5: I can now see the stop valve below which must be on the mains coming down.

My only excuse is I was in a rush to get out this morning, it won't happen again, come to think of it it probably will cos i is old now.

Sorry Gents & OP'er

 

[JCplumb]

4thd'd !


Agree with your point above though, if some rads are working then it's a circulation issue.

 

[samsg30]

4thd'd !
View attachment 26061

Agree with your point above though, if some rads are working then it's a circulation issue.

I tried to bleed those cold radiators and water is coming out immediately. One of the cold radiator is actually towel rail in bathroom upstairs which is the highest radiator and I filled 2 liters of Fernox F1 inhibitor in it. Now when I bleed it, again water (or may be chemical) coming out immediately. Do you recommend I should let water come out for sometime to check if there's air stuck after it or should air always come out first irrespective if there's any?

 

[Howsie]

It sounds like you've got balancing issues or it's sludged up somewhere.

 

[samsg30]

Red valve is a bypass valve, nothing to do will filling pressure. Have you got a picture of the tank in loft?

Yes.. I managed to get in loft and there's a small blank tank covered with bit of black polythene but there are no valves at all what so ever. I haven't taken the pipe insulation off to check if someone has fit the compression valve instead which can be turned on/off using screw driver as I was expecting visible lever there. Other picture shows three pipes going up to the loft. One is mains cold water.

 

[kris]

Is there any pics of your boiler as nothing near your hot water cylinder, ?

 

[Howsie]

Yes.. I managed to get in loft and there's a small blank tank covered with bit of black polythene but there are no valves at all what so ever. I haven't taken the pipe insulation off to check if someone has fit the compression valve instead which can be turned on/off using screw driver as I was expecting visible lever there. Other picture shows three pipes going up to the loft. One is mains cold water.View attachment 26062View attachment 26063View attachment 26064

Is there water in that tank?

 

[kris]

The boiler you have is made as a heat only boiler, as its probably open vented, it can be fitted to an sealed system if appropriate safety features are added, the f22 fault is probably because you drained it and never bled the boiler or pump etc, have a look in the attic for a small plastic tank that will supply water to the boiler and rads, the f22 fault may also be a temp rise difference within boiler , ( circ problem due to air or lack of bleeding ), hope this helps mate

 

[samsg30]

Is there any pics of your boiler as nothing near your hot water cylinder, ?

attaching four pictures of boiler (Glow worm flexicom 30hx) which is suitable for both open vented and sealed system as per manufacturer's guide.