Elson Coral E Thermal Store Descaling Required

[dukes]

Hi
Can anyone give me some advice please. I think have a scale issue with my electric boiler (8 years old). The symptoms are the water in the shower/taps runs hot initially then runs luke warm after a short while. If you switch off the shower/taps briefly the water then runs hot again when shower/taps switched on again. I have changed the blending valve however this had no effect. Am i right in assuming then this is a heat exchanger descale issue? secondly roughly how much would it cost to descale the boiler? thirdly can anyone recommend a reputable/reliable descale company to do this job. I am based in the central london area near Maida Vale i.e. NW8.

Thanks in advance.
regards
dukes

 

[stevetheplumber]

give me a ring on 07725500910 steve barnes

 

[Howsie]

Steve's your guy!

 

[dukes]

Hi all
I subsequently had this coral e boilers heat exchanging coils descaled by a friend. This has still not resolved the situation. So to summarize I have changed the blending valve and had the heat exchangers descaled ( on the inside of the coils ) and this has not helped with the initial problem I posted about above. What else could the problem be. The water if the flow rate at the taps is lowered does remain hot. The hot pipes which joing the hot inlet on the blending valve are hot to the touch when the boost is on for a while. But however they then become cool pretty soon after the hot water tap is run. This indicates the issue lies in the store and not the blending valve as the water becomes cool even before it reaches the blending valve after running hot for a brief time (30 second or so). So what could the issue be?

possiblities
1. the heat exchangers are scaled on outside
2. the heating elements immersion heaters are scaled up so are not heating up the water sufficiently (although this doesn't sound likely as the water is initially quite hot then runs luke warm.)

Any ideas ????

HELP!!
dukes

 

[SimonG]

Phone Steve 🙂

 

[stevetheplumber]

dont phone me i priced to descale and he got his mate to do it

 

[Rickster123]

Mates know best Steve!! But look how much money he saved :6:

 

[mountainman]

Mates know best Steve!! But look how much money he saved :6:

Nuff said.