Replace filling loop

[JFD7000]

I need to replace a filling loop on an IDEAL Esprit 2 boiler.

I’ve used it tonight to fill the boiler up and noticed a leak on one of the taps. I have a towel wrapped around and a bucket underneath for now but I am going to replace it tomorrow.

I understand I need to turn the water main off but can I do it without draining the system?

 

[terryplumb]

Which tap is leaking ?
If it's the one on the cold mains end ,you don't need to drain the heating as the other valve doesn't need to be removed.
However, it looks like it's the valve on the heating side that's leaking and a drain down would be sensible.

 

[JFD7000]

It’s the one underneath the pressure gauge on the filling loop.

 

[terryplumb]

It’s the one underneath the pressure gauge on the filling loop.

Yes,that's what I thought. Drain down needed before removing that valve.

 

[JFD7000]

So do I turn the water off then put the bucket underneath and remove the valve and let the boiler drain then swap it and then repressure the boiler?