Which way round should the filling loop be fitted?

[Barry98]

Who cares ....... as long as no one contaminate the mains and fitter gets paid !
Happy birthday pal

Cheers mate

 

[jtsplumbing]

Think bod is on a wind up tonight. :happybday:

 

[diamondgas]

So if you had MI's saying fit on return you'd still fit on main ?

I'm a bloke bod .. don't read mi's :lol: What manufacturers state fit on heating?

 

[Barry98]

I'm a bloke bod .. don't read mi's :lol: What manufacturers state fit on heating?

Isnt that why we're in this trade ? Cos we don't read Destructions

 

[GrahamM]

Ok, all you peeps out there who have not done your Water Regs, the double check valve is required as most plumbers know to protect (along with the removable connection) against back flow of the dirty category 3 domestic heating water into the nice clean mains water which is category 1, therefore the protection device has to be fitted to the mains cold water otherwise dirt can enter.
This means that those cheap filling loops which only have one isolation valve can only be used if another valve is supply & installed, so you might as well buy the proper ones, doing this also has the benefit of providing a 15mm drain down, flushing & injection point, normally below the boiler & if the check valve fails it can easily be replaced without the need to drain the heating.
Please remove the filling loops after you have finished filling it is a requirement (sorry a pet hate), hope this clears up any confusion.

Spot on Chris. Well explained.

 

[Barry98]

Spot on Chris. Well explained.

But does it say that in the MI's

 

[diamondgas]

I've just checked a Part L compliant loop I've just bought for a job I'm doing tomorrow! Guess what? The loop is connected iso first with arrow pointing to the loop, then check valve arrow pointing out to compression nut! I'd be fitting the check valve to the heating following the way that was put together .... ! No mi's! Go figure Bought from here FL 110 Filling Loop Part L Compliance

 

[casaco]

Hi diamondgas, well, yes, thats the problem, the arrows show the flow through the valves, but you still get the same direction of flow through the valves from cold feed to return or return to cold feed, it just depends on which way round you fit the loop. That was why I was asking, which way round does it go. Baxi say one way, Vokera the opposite way.

 

[jtsplumbing]

Not what they say it;s water regs check valve on cold main, find out what happens if you fit it on heating pipe and it fails, contaminates water main who do you think will get took to court ????

 

[diamondgas]

Hi diamondgas, well, yes, thats the problem, the arrows show the flow through the valves, but you still get the same direction of flow through the valves from cold feed to return or return to cold feed, it just depends on which way round you fit the loop. That was why I was asking, which way round does it go. Baxi say one way, Vokera the opposite way.

And the one in question was pre-set up to connect the iso to the mains and the check valve to the heating circuit!!!

 

[GrahamM]

The check valve is to protect the mains from impurities. It is not to prevent contaminated water exiting the heating system.

 

[mountainman]

BORING, I thought this question was done to death a few months ago :-/

 

[AWheating]

Check valve is always fitted to the cold main side. If MI state different then you need to also comply with the water regs so need to fit an additional double check on the cold main. So it will cost your more if you follow MI in this instance.

Some chemicals can be dosed via the filling loop so having the check on the heating side wont protect the cold from contamination.

Happy birthday Bod

 

[chris watkins]

Who cares ....... as long as no one contaminate the mains and fitter gets paid !
Happy birthday pal

Typical gas man !!! , bet he would get all upset if we suggested installing push fit ball-o-fix on gas supply to his boiler !!

 

[diamondgas]

BORING, I thought this question was done to death a few months ago :-/

The op has a legitimate question that has sparked the prior responses! I'm assuming they weren't privy to whatever thread you're referring to mountainman! I doubt the response has been that boring for the op, more informative I'd imagine

Isn't that what this place is for, people to ask questions?