Filling loop not working!! | Central Heating Forum | Plumbers Forums

  • Welcome to PlumbersTalk.net

    Welcome to Plumbers' Talk | The new domain for UKPF / Plumbers Forums. Login with your existing details they should all work fine. Please checkout the PT Updates Forum

Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

American Visitor?

Hey friend, we're detecting that you're an American visitor and want to thank you for coming to PlumbersTalk.net - Here is a link to the American Plumbing Forum. Though if you post in any other forum from your computer / phone it'll be marked with a little american flag so that other users can help from your neck of the woods. We hope this helps. And thanks once again.

Filling loop not working!!

Post thread
Post reply

Discuss Filling loop not working!! in the Central Heating Forum area at Plumbers Forums

P

paul_cragg

Messages
20
Tried repressurising by turning valve on filling loop. Normally you hear water whoosh through. This time no water. Took lever off and turned with spanner then took loop off and tried again. Water is coming through so now thinking broken NRV, is there a way to fix them or could it be an issue further up the boiler (Baxi 105E)? Is there any other valves that may be switched off? Any help would’ve greatly appreciated.
 
John.g said:
Is there not a valve at both ends of the filling loop?.
Click to expand...
Hi, no there is a valve at one end and a non return valve at the other
CA94A4FD-CCF1-41B1-9090-E8F7DE059E4B.png
 
Water is going through the loop but then seems to stop and not going into the boiler. I did have an external vessel added a couple years ago and has been fine until now. Does that have any affect on how you pressurise?
 
The external E.vessel shouldn't have any effect, normally with a cold system you may have 1.5 bar and then when pressure falls to ~ 0.6/0.7 bar you would re pressurize.
 
John.g said:
The external E.vessel shouldn't have any effect, normally with a cold system you may have 1.5 bar and then when pressure falls to ~ 0.6/0.7 bar you would re pressurize.
Click to expand...
That’s where I am at, but water not going in so am assuming there is a blockage somewhere? Trouble is hot water keeps going off with low pressure error light 😕
 
Do you have a manual gauge on the boiler ?
 
If you want to inspect the NRV you will have to drain the boiler if your sure that you have sufficient pressure, very unlikely that you have a filling PRV like in the attachment that needs adjustment.

If a boiler sensor fault you will have to get a RGI
 

Attachments

  • Filling PRV.jpg
    Filling PRV.jpg
    11 KB · Views: 41
I have a combi boiler with flexi filling loop, valves at both ends. I topped up ok a month ago but yesterday when I opened the valves no water came through. Probably not calcium because I have a water softener.
 

Similar plumbing topics

R
Filling Loop query.
Flexible couplings everywhere? Perhaps thats...
Replies
9
Views
503
rizla01
R
B
Noise from 8-Bar filling valve (Megaflo)
Thank you for this.
Replies
4
Views
597
BenH
B
H
Filling loop issue?
Where is the boiler located? Height wise from...
Replies
9
Views
2K
Timmy D
T
Stigster
  • Question
New Vaillant filling loop required.
Yep spot on
Replies
3
Views
371
ShaunCorbs
ShaunCorbs
P
Hissing pipes filling loop not working
This morning still hissing then I turned the...
Replies
1
Views
1K
Penniness
P
Back
Top