Central heating clean necessary?

[samm]

Hi all,

The central heating in my home is a vented system about 35 years old with a Potterton profile boiler which is about 17 years old. I have a magnaclean installed and its done a good job as the system water is clear. It is also filled with a couple of bottles of fernox f1.

My question is I have to drain down the system to replace the magnaclean as its started leaking from a crack in the plastic bowl, would it be worth putting in some sentinel x800 or x400 and running the system for a few days before flushing and refilling with f1 ready for winter?
Theres not really any problem with the system only a bit of 'hissing' from the boiler when it is fired, or could I end up creating problems.

Thanks!
Sam

 

[Scott_D]

You can shut the valves and replace the plastic body only.
Depends if you want to create work for yourself

 

[samm]

Tbh the magnaclean has been a pain for a few years. It has leaked before and difficult to remove the lid so Ive bought a spirotrap MB3 to put on instead.

 

[dancinplumba]

Hire freezing machine

 

[samm]

I really dont mind draining the system down. My question is is it worth putting in some sentinel x800 or x400 to clean the system out?

 

[dancinplumba]

The cleaner, the more efficient, why not

 

[Ermintrude]

Magnaclean will replace faulty unit foc. X800 leave it in for two weeks! I wouldn't fit anything but a magnaclean.

If your system micro bore with vertical drops remove ground floor rads at end of two weeks and rinse out !