Magnetic filter.

[Harry Bloomfield]

I dont touch it, it gets serviced every year and thats it, it's 13 years old Worcester greenstar I think it is

Is that a full system service, or do the just check the boiler is operating safely?

Dependant on your pipe layout, fitting a filter can be done DIY, in a leisurely afternoon, at a cost of £50-ish.

 

[pete01]

Is that a full system service, or do the just check the boiler is operating safely?

Just the boiler

Dependant on your pipe layout, fitting a filter can be done DIY, in a leisurely afternoon, at a cost of £50-ish

Its not something I would attempt, I'll fit the electric shower pipe work but thats my limit.

 

[Harry Bloomfield]

Its not something I would attempt, I'll fit the electric shower pipe work but thats my limit.

No more difficult than a shower really - drain down, cut a short section out of the 22mm return pipe, in a suitable location, fit the filter and refill.

 

[pete01]

No more difficult than a shower really - drain down, cut a short section out of the 22mm return pipe, in a suitable location, fit the filter and refill.

Which pipe?

 

[CountryFan]

Which pipe?

View attachment 408246

The 22mm on the right, looking at the boiler.

 

[Harry Bloomfield]

Which pipe?

Either 1, 3, or 5 - check your boiler manual, it will state which is the return, or....

With your heating system cold, fire it up - the pipe which gets hot first, is the flow pipe. The next one to get hot, once your radiators warm through, is the return pipe.

You could likely get away, without having to drain that system....

Turn off the flow, and return valves, under the boiler. Open a bleed valve on a downstairs radiator, to drop the pressure out, close it. Then you can cut your flow pipe and fit the filter. It would just need repressurising then.

Looks to be plenty of space, for the filter to go under the boiler, in that pipe, but the filter will stick out quite a way. Is there room, with what ever you had, in front, hiding those pipes?

 

[CountryFan]

Either 1, 3, or 5 - check your boiler manual, it will state which is the return, or....

Definitely not 3 as that's Gas, G's printed on the brass. Most manufacturers follow the same layout making swapping out easier. @pete01 - have a look on the jig underneath, might be a picture of a rad and an arrow. I'd put money on the right one being the return near the prv

 

[gas112]

Turn off the flow, and return valves, under the boiler. Open a bleed valve on a downstairs radiator, to drop the pressure out, close it. Then you can cut your flow pipe and fit the filter. It would just need repressurising then.

Looks to be plenty of space, for the filter to go under the boiler, in that pipe, but the filter will stick out quite a way. Is there room, with what ever you had, in front, hiding those pipes?

DO NOT TOUCH the isolating valves unless you want a very high chance of them leaking
Plenty of room ? there is about 6 inches of pipe on show

 

[Harry Bloomfield]

I fitted a Furnox TF1, without any isolation valves - there simply wasn't the space for them. In your case, you have an isolation valve at the boiler, so I would suggest adding one below the filter.

FERNOX TF1 Omega Filter 22mm 62248 – Magnetic Slip Socket Central Heating Trap | eBay UK

✔️ Genuine Fernox part – Part No: 62248. This product must be installed by aqualified heating engineer to ensure safe and compliant operation. Always follow Fernox’s official installation instructions.

www.ebay.co.uk

The process for cleaning the filter, is to turn off the heating, isolate, then remove the magnet. Wait a while, for the magnetite to fall to the base, then open the drain valve, flushing the magnetite out. Reinstall, open valves, heating back on. The magnet, sits in a pocket, completely sealed from the water.

What I didn't like about the TF1, was having to use the awkward valve cap, to open the drain valve.