Filling loop / check valve

[E22]

Hi,

in what circumstances, would you say, it is ok to install a boiler without a filling loop and/or check valve?

We had a new boiler installed without a filling loop and/or check valve. I had conflicting advice on the subject: some say it is illegal not to have a check valve (risk of water contamination), others say it is ok, as long as there is a way to top up the boiler (in our case, a tap on the floor bellow behind the fridge).

The fact, that the new boiler did not have the check valve was flagged up by a plumber, who came a few days later to inspect a leaking pipe.

Thank you!!!

 

[Stigster]

Water regulations insist that you protect the water supply, not just with a check valve but rather a double check valve. The filling loop must be removable too so that the water main is not linked to the heating system at any time other than filling, usually done with an easily detachable braided hose.

It sounds like you have a direct connection between water supply and heating system controlled by a valve of some sort.

This would be in contravention of the UK water regulations. It's not a grey area or anything like it. It is a must do to have it set up properly.

 

[E22]

Water regulations insist that you protect the water supply, not just with a check valve but rather a double check valve. The filling loop must be removable too so that the water main is not linked to the heating system at any time other than filling.

It sounds like you have a direct connection between water supply and heating system controlled by a valve of some sort.

This would be in contravention of the UK water regulations. It's not a grey area or anything like it. It is a must do to have it set up properly.

Thank you. This is very helpful to know.

Indeed, there is one direct pipe that connects the kitchen taps and boiler and there is only one valve (tap) between them.

The lack of double check valve is blatantly obvious. The installation company would not come back to rectify, because the engineer says "there is a filling loop". (although there isn's one). Any advice on how to proceed?

 

[centralheatking]

I am an expert on pressurised domestic heating systems. The relevant Wras regs are
Water Regulations Guide 1999 Schedule 2 Section 8 par. G24.1 G24.2
However also refer to B54 it might assist. I do not like G24 because it actually does
not actually specify a double check valve...however in combination with Yorkshire Water
we hope to have this amnended ...in fact the up dated instructions for Top Up Mate
include this as a core part of its installation guide. centralheatking

 

[E22]

I am an expert on pressurised domestic heating systems. The relevant Wras regs are
Water Regulations Guide 1999 Schedule 2 Section 8 par. G24.1 G24.2
However also refer to B54 it might assist. I do not like G24 because it actually does
not actually specify a double check valve...however in combination with Yorkshire Water
we hope to have this amnended ...in fact the up dated instructions for Top Up Mate
include this as a core part of its installation guide. centralheatking

Thanx! That is so helpful!
I am geninely shocked that this being such an unambiguous requirement, it has been totally overlooked in our installation. And the company had guts to argue otherwise!
Thank you!

 

[Stigster]

You could ask them to take a look at the UK Water Regulations Section 8.24 and ask them how they have managed to make your installation comply with these requirements. I have attached a photograph of the relevant page for your perusal. Sorry it's not a better copy but it should be readable and you will see they have not met the requirements.

Edit to add- Sorry the picture looks a lot better at my end. I will try to take another and get a better picture uploaded.

 

[E22]

You could ask them to take a look at the UK Water Regulations Section 8.24 and ask them how they have managed to make your installation comply with these requirements. I have attached a photograph of the relevant page for your perusal. Sorry it's not a better copy but it should be readable and you will see they have not met the requirements.

This is totally adequate! Thank you!

I only wish I had posted this question here earlier!

Thank you for the advice and information! You are all absolutely amazing!

 

[Stigster]

I'll try again but I think by uploading the photo, the quality is being significantly lowered.

OK, it's still not great but at least you know the relevant section to quote in our water regs now.

Happy to help.

 

[E22]

I'll try again but I think by uploading the photo, the quality is being significantly lowered.

Thank you! This is indeed better. I have saved it !