Which way round should the filling loop be fitted?

[jtsplumbing]

Sorry bod think you are wrong this time !! the book says water main.

 

[Barry98]

So your reading the same book as casaco ? If he has a book that says fit on return you fit on return if he has a book saying fit on feed you fit on feed .

 

[diamondgas]

I'm guilty of fitting them on the heating in the past mainly because the cheaper ones came without an iso and ignorance to be honest! I assumed the check valve had to go onto the heating side because of the directional arrow of flow printed on them. They must go as Chris has said ... On the cold water main

 

[SafeGasInstall]

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

 

[Barry98]

I'm guilty of fitting them on the heating in the past mainly because the cheaper ones came without an iso and ignorance to be honest! I assumed the check valve had to go onto the heating side because of the directional arrow of flow printed on them. They must go as Chris has said ... On the cold water main

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

 

[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.