Cleaning Central heating procedure

[shd1970]

So I have replaced all 8 radiators in my house and everything is good and so far no leaks

As mentioned in a previous thread, as the system hasn’t been blessed with much inhibitor, I’m currently running MC3+ through the system which has been in there a couple of days
Each day I have been running the system for approximately two hours and yesterday evening I cleaned out the magna clean which you can see from the attached photo, had a small amount of magnetite on there.
My plan was to continue to run and clean the filter out for 5 days in total before flushing the system and adding the inhibitor

First question : I know the cleaner can be left in the system for up to 28 days and considering all new radiators, does 5 days seem like a sensible period of time to clean the pipes and remove any flux as I believe the cleaner does this according to Adey tech Support ?
There has been minimal new piping required and prior to the new radiators being fitted the system did not suffer from any sludge

Second question : my plan for draining the system was again run the system and get all radiators fully up to temperature and then turn off the heating and drain whilst warm/hot
I have fitted drain valves on all 4 downstairs radiators so plan was to empty from all 4 points and then refill the system with fresh water, bleed and then run the system, then empty a final time before fill and inserting the inhibitor

All things considered does this sound like a sensible and correct plan or have I missed something please?

Finally, is there anywhere on the boiler itself that I should be draining during the emptying of the system or is the above procedure of just draining at all 4 downstairs radiators be sufficient ?

My boiler is a Worcester green star 37CDI

Many thanks in advance

 

[endecotp]

Sounds good to me.

The professionals who fitted my new boiler (to my new pipework) told me there was no need for any flushing or cleaning at all.

 

[Elsa TLC]

Sounds good to me.

The professionals who fitted my new boiler (to my new pipework) told me there was no need for any flushing or cleaning at all.

Was it a brand new system?
Everything new ?

 

[Elsa TLC]

So I have replaced all 8 radiators in my house and everything is good and so far no leaks

As mentioned in a previous thread, as the system hasn’t been blessed with much inhibitor, I’m currently running MC3+ through the system which has been in there a couple of days
Each day I have been running the system for approximately two hours and yesterday evening I cleaned out the magna clean which you can see from the attached photo, had a small amount of magnetite on there.
My plan was to continue to run and clean the filter out for 5 days in total before flushing the system and adding the inhibitor

First question : I know the cleaner can be left in the system for up to 28 days and considering all new radiators, does 5 days seem like a sensible period of time to clean the pipes and remove any flux as I believe the cleaner does this according to Adey tech Support ?
There has been minimal new piping required and prior to the new radiators being fitted the system did not suffer from any sludge

Second question : my plan for draining the system was again run the system and get all radiators fully up to temperature and then turn off the heating and drain whilst warm/hot
I have fitted drain valves on all 4 downstairs radiators so plan was to empty from all 4 points and then refill the system with fresh water, bleed and then run the system, then empty a final time before fill and inserting the inhibitor

All things considered does this sound like a sensible and correct plan or have I missed something please?

Finally, is there anywhere on the boiler itself that I should be draining during the emptying of the system or is the above procedure of just draining at all 4 downstairs radiators be sufficient ?

My boiler is a Worcester green star 37CDI

Many thanks in advance

Maybe try running the system from cold through one radiator at a time. Get whole System hot.
○ Then turn off all radiators except one.
Once that's nice and hot for 5 - 10 minutes then move on th the next radiator. Turn off the previous rad and so.


At the end of the 28 days heat complete system. Then turn off from programer let the boiler switch off by its self then drain.

All valves wide open.

Fill system add inhibitor, call for heat then Ballance.

 

[shd1970]

Maybe try running the system from cold through one radiator at a time. Get whole System hot.
○ Then turn off all radiators except one.
Once that's nice and hot for 5 - 10 minutes then move on th the next radiator. Turn off the previous rad and so.


At the end of the 28 days heat complete system. Then turn off from programer let the boiler switch off by its self then drain.

All valves wide open.

Fill system add inhibitor, call for heat then Ballance.

Thanks for the reply

Radiators have all got really hot, so I don’t think there’s any need for me to put the maximum through each individual radiator
However the largest radiator on the system is the one that’s closest to the boiler so I think I will run the system a good few times with that one shut down so the rest effectively get some additional heat
The furthest radiator on my system is the smallest and the first few attempts. It didn’t really get that warm but closing the lock shield on a few kicked it in to life and now with all lock shields open it seems to be good

As I say the system even prior to replacing all the radiators didn’t suffer from any sludge of any real degree so my main thought is to make sure the radiators have a good dousing off cleaner through them all and the pipes

I’m only planning to leave in the system for a week as need to get it drained down flushed and then inhibitor in which I think should be sufficient time any hail because I have the carpet fitters coming next weekend and still have the floorboards up

 

[Elsa TLC]

Thanks for the reply

Radiators have all got really hot, so I don’t think there’s any need for me to put the maximum through each individual radiator.

Your radiators should get hot. Thats not the aim. The aim is for the velocity of water to concentrate on removing debris and sludge each run individually.

However the largest radiator on the system is the one that’s closest to the boiler so I think I will run the system a good few times with that one shut down so the rest effectively get some additional heat.

That will come when Ballancing the system after you have cleaned it.

The furthest radiator on my system is the smallest and the first few attempts. It didn’t really get that warm but closing the lock shield on a few kicked it in to life and now with all lock shields open it seems to be good

Balancing.

As I say the system even prior to replacing all the radiators didn’t suffer from any sludge of any real degree so my main thought is to make sure the radiators have a good dousing off cleaner through them all and the pipes.

Your trying to eliminate the dirt so that it doesn't interrupt the boiler. More important eith a combination boiler.

I’m only planning to leave in the system for a week as need to get it drained down flushed and then inhibitor in which I think should be sufficient time any hail because I have the carpet fitters coming next weekend and still have the floorboards up

If you think a week is right then that's right. You know your system.

Adding a Neutraliser wouldn't be a bad thing either.

 

[shd1970]

Thanks @Elsa TLC for advice…understand
Yes I’ll do each rad individually and give each one a 1 hour hit

Sound good ?