Fernox TF1

[simpic]

Quick question...

I think my plumber has installed the TF1 on the wrong pipe! It's currently on the CH Flow.

Should it not be on the CH Return?

Or does it not matter.

Regards,

Simpic

 

[mickyg]

ideally on the return but not essential. subject to popular belief these filters dont pick everything up on the first pass

 

[D_Hailsham]

I had exactly the same problem - locating the TF1 on return was virtually impossible. So I emailed Fernox and asked their advice. They replied:

There is no objection in principle against installing on the flow side.

The main reason for not recommending the flow side seems to be that, if the valves were accidentally left closed, a potentially dangerous situation could arise.

 

[Agile]

The boiler does not know if any blockage is on the flow or return!

The same applied to any series circuit, elcetrical or plumbing flow.

The hope is that a filter will catch a particle before the boiler!

Tony

 

[D_Hailsham]

The boiler does not know if any blockage is on the flow or return!

The "dangerous situation" might arise if the filter is on the flow between boiler and vent of an open-vented boiler.

 

[Phill Peck]

It would still be open vented thru the return

 

[D_Hailsham]

It would still be open vented thru the return

should still be open.

You have to allow for the unexpected.

 

[Phill Peck]

Fair point

 

[swbjackson]

There should be no valves between the boiler and the open vent and cold feed. This is why it is sometimes incorrect to fit a TF1 or magnaclean on the flow pipe adjacent to the boiler. If it is a sealed system or fitted after the vent/feed it's not an issue other than providing slightly less protection to the boiler.