Had trouble with the boiler bumping and banging over the last few months so I partially drained it today and added some de-scaler. The water in the header tank was warm but I thought it was just heat bleeding back up from the cylinder. I've just been up there again since putting the gunk in the system and the header tank is steaming hot. Any ideas??
Hot water in header tank
- Thread starter IOM1
- Start date
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Probably a blockage. Perhaps you disturbed some sediment while draining. Are all the radiators full up to the top? Did you get black water and sludge out when draining?
What sort of system cleaner did you use?
The water may well be pumping up the vent pipe and running into the feed and expansion tank - have a look. Turning down the pump speed may stop or reduce this.
What sort of system cleaner did you use?
The water may well be pumping up the vent pipe and running into the feed and expansion tank - have a look. Turning down the pump speed may stop or reduce this.
John,
The water came out pretty clear when I drained it earlier today. The rads are all OK and getting hot as I bled them straight after topping up with Everad de-scaler and sludge dispersant. The heating has been on most of the day so the hot water has been on as well. Just checked the cylinder and it is red hot despite a bath being run about an hour ago.
The pump is currently running on the slowest of three speeds. I have also turned the thermostat on the boiler down to the lowest setting.
The water came out pretty clear when I drained it earlier today. The rads are all OK and getting hot as I bled them straight after topping up with Everad de-scaler and sludge dispersant. The heating has been on most of the day so the hot water has been on as well. Just checked the cylinder and it is red hot despite a bath being run about an hour ago.
The pump is currently running on the slowest of three speeds. I have also turned the thermostat on the boiler down to the lowest setting.
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I'll give it a go and do some trouble shooting again tomorrow. One thing that is strange is that the level in the header tank hasn't reached the overflow so there can't be that much water getting up there. Having said that it is very hot. On a positive note at least we still have heat in the house!
(an increase in volume of content within the system would occur if gas was generated from the action of the cleaning chemical or as a result of corrosion. Gas displaces the water from the tops of radiators and causes it to rise into the F&E tank. Doen't appear to be happening in this case, though).
Sloss & John D,
Thanks for your advice. The system already seems to be running quieter since I put the de-scaler in yesterday, no popping, banging, whizzing etc. Also I have just had a look in the header tank and the water in there is cold as it should be. Not counting my chickens but it looks a whole lot better than yesterday. What a brilliant forum this is - now in my favourites.
IOM1
Thanks for your advice. The system already seems to be running quieter since I put the de-scaler in yesterday, no popping, banging, whizzing etc. Also I have just had a look in the header tank and the water in there is cold as it should be. Not counting my chickens but it looks a whole lot better than yesterday. What a brilliant forum this is - now in my favourites.
IOM1
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