Lukewarm central heating on Intergas Rapid 32

[Ant1]

Below is a photo of the only used radiator I installed (everything else was new), it is not very big and even flushed it with the garden hose before installing it:

Below is a photo of the water drained through the magnetic filer:

Because there was a bit of sludge in the flow CH pipe, I was told I had to clean the whole system (ie there should be no sludge going through the magnetic filter / boiler all the way to the flow CH pipe).

I appreciate that radiator might have introduced a bit of sludge, but I would have expected the boiler being able to cope.

I was told I had to clean the system, and they would do a good will gesture replacing the pump if it seizes.

They all carry test kits, did he take a sample of system water for analysis?

Nope, he took some photos though.

 

[Razor900]

Even if the system was new a flush should have been done. New rads always have loads of crap in them.

The good news it it’s almost certainly just the boiler that needs doing

 

[Ant1]

To close on this thread, I managed to get the system to heat each radiator properly by simply draining the full system, ie:
- I opened the draining valves (I have 2 for each zone)
- I opened the bleeding valve on each of the 10 radiators
- I opened the bleeding valve on the boiler
- I manually opened both zone valves
- I let the system drain for a couple of hours
- I refilled the system

Then the boiler was working normally.

After doing the above I contacted Intergas who advised me the whole system needed to be cleaned / flushed as they claimed it was an issue with the system being dirty (specially inside of the pipes near / in the boiler). I had this done professionally by my plumber (spent around 5 hours on it), and really there was very little dirt / sludge. My plumber had another customer with exactly the same issue with that boiler a couple of month ago, though in his case the system never heated the radiators properly.

If the boiler is not at fault, it is extremely disappointing it cannot cope with a minimum of dirt/sludge and I was forced to spend hundreds of pounds just to prove my system is clean. I can now only wait and hope it is not going to happen again.

Hopefully my final question, what kind of cable is used to connect a laptop to the boiler? I guess the service software is not available to download? I would like to check if the boiler is efficiently heating water as I kinda lost confidence in it.

 

[Mr Chibs]

Thanks for the update, I'm surprised at the outcome.

I dropped the filter on mine a few days ago, and was surprised how clean the filter was, not even any deposits on the magnet... although the water was slightly green, I have an UFH room as well. It had biocide in it, but I'm going to dose it again before it gets worse... I was surprised as I was thinking the algae would be circulating around, surely the boiler can't be that picky?

Cleaned out magnaclean filter water is yellow/greenish

Thought I'd clean out magnaclean filter on my combo boiler (intergas rapid+ 32Kw) Was a complete new install 3 years ago. The system had inhibitor and from what I remember a biocide for the UFH. There was hardly any crud on the magnet, but the grey strainer was slightly green stained bit like...

www.diynot.com

Anyway, glad you've sorted.

Chibs