Dirty water from taps! (Worcester Combi-Boiler)


Postby Olympus » Wed Mar 05, 2008 11:20 pm

I have a Worcester 24i combi-boiler. It's about 8 years old and feeds 4 rads. It's a sealed system of course, so there are no storage tanks.

Lately, I have been getting dirty water from the taps. It looks and smells like the water in the rads, grey in colour and smells metallic. It clears after a short while.

I have just drained the system and replaced a radiator that was sludged up. I have also injected Fernox cleaner into one of the rads and will soon drain that off and inject Fernox inhibitor.

I thought the water to the taps came straight from the rising main. Why might it be getting contaminated like this? Thanks guys!
Olympus
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Joined: Sat Feb 02, 2008 10:13 pm

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Postby htg engineer » Thu Mar 06, 2008 8:08 am

The plate heat-ex has probably corroded and the water from the central heating will be mixing with the hot water. Replace the plate heat-ex.

Have you noticed any discolouration in the cold water ? any works been carried out to thwe main cold water supply in your area ?

hope this helps
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Postby Oliver_murphy » Thu Mar 06, 2008 1:28 pm

could be that your plate-plate heat exchanger has split,
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Postby Olympus » Thu Mar 06, 2008 4:28 pm

Yes. The discoloured water appears from both the hot and the cold taps in the kitchen and the bathroom.
Olympus
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