'Flushing' Central heating system - Baxi Bermuda 45/4

[t400ble]

Hi all

Sorry - new here, so hoping for a little help

We have a Baxi back boiler system at home

If I wish to 'flush' the system, how should I proceed?

There is a tank upstairs. can I add a chemical into that?

Do I the open the drain valve in our downstairs hall, after attaching some pipe?

Thanks for the help

 

[stem]

Hello and welcome to the forum.

There is a 'Wiki' for FAQ's. This is always a good place to start looking for information. Your answer can be found by clicking here and selecting item 5. Your system will be covered under the 'open system' as it has a feed and expansion tank in the loft.

 

[ubuntu_83]

I dont believe its as easy as "adding a chemical in the tank".... there is special equipment that pushes and circulates chemicals and hot water around the radiators and pipework to clear out gunk. it is also commonly referred to as Power Flushing if you want to Google more on it...

 

[t400ble]

Sure, just wanted to see if I could maintain the system myself

Thanks

 

[stem]

It all depends how bad the system is. If it's heavily sludged up, then yes a powerflush maybe the only solution. Often though, the pipes are fairly clear, but the sludge sits in the bottom on the radiators and they can be cleaned out individually.

 

[t400ble]

Heating works great, but 'whistles' from boiler

 

[JohnD]

I dont believe its as easy as "adding a chemical in the tank"....

A DIY chemical clean really can be almost as easy as that. It is not as effective as a powerflush, but for £15 and a few hours of your time, it is very likely to do some good.

If you can afford £100 and do simple plumbing, you can add a filter which will trap future circulating particles and prevent them settling into a new blockage.

 

[t400ble]

What would be a good filter to be installed?

 

[JohnD]

I am a DIYer and have only used Magnaclean (which used to leak, though it is said they have improved) and brass Spirotech (very sturdy but not as fast at collecting dirt)

The professionals disagree violently and will argue bitterly.

BTW you can also get quite a lot out of radiators if you carry then into the garden and squirt a hose through them.