I have a central heating system in a 7yr old ‘Persimmons’ new build, that has several problems related to reduced flow.
A nice retired engineer on these forums, has helped me, through extensive testing, identify the heat exchanger as the culprit.
The boiler is a Glowworm Ultracom 24hxi, 10 Rads, 8 of them on 10mm microbore.
The question now is, how to clean the heat exchanger.
What are the best methods of cleaning the heat exchanger without removing it?
- running Fernox F3 through system for a week made no difference.
What are the likely culprit, limescale/sludge/metal fillings ?
What are the best chemicals to use?
Thoughts?
Thanks in advance.
A nice retired engineer on these forums, has helped me, through extensive testing, identify the heat exchanger as the culprit.
The boiler is a Glowworm Ultracom 24hxi, 10 Rads, 8 of them on 10mm microbore.
- It wasn’t commissioned for 18 months.
- before the system was commissioned, I took all the rads of the wall and flushed them, small metal fillings came out as well as dirty water.
- subsequent flushing over the years, has been clear, no signs of sludge.
The question now is, how to clean the heat exchanger.
- A main flush, removed nothing, but it did demonstrate restrictive flow.
- The mains return - flow flush, was more restricted than a reverse flow - return flush.
What are the best methods of cleaning the heat exchanger without removing it?
- running Fernox F3 through system for a week made no difference.
What are the likely culprit, limescale/sludge/metal fillings ?
What are the best chemicals to use?
Thoughts?
Thanks in advance.
