Recent content by Hunkamunka

Hi again Tony...out yesterday PM but thanks for your message......the 10 degree difference you mention was my fault as I did not take into account rates of flow..(see suggestion by Gasguru ).....will be carrying out testing again as soon as I get a day when I am home early enough we are up to...

Hi again Gasguru...had to go out yesterday PM and am at work today...is there a setting on a boiler to give flow rates (cant see how) or do I just set up on a bathroom tap using a measured container as you have previously suggested....I will get around to this test asap...probably a few days as...

Hi all....once again thanks to all who replied to my original posting and set me on the right road.....after sitting down and thinking about all your advice I checked the supply to the kitchen tap and found two small bore connections to a mixer tap....all the connections in the bathroom are...

ChrisR...thanks for your reply as well....it is starting to look a little as if it will be a process of elimination....guess I just need to work out where to start....I dont suppose anyone can tell me the expected temperature rise across the DHW exchanger compared to the drop across the CHW...

Thanks again Gasguru...I am starting to think that you are right when you mention the heat exchanger....for the time being I will try to restrict flow a little to increase temperature...however that is only curing the symptoms and not the cause....I see a bill on the horizon....thanks again for...

Thanks Macstevie...this is a "hard" water area and I am used to plate heat exchangers albeit a little larger on some small water chillers...however the loss of heat just appeared so sudden...almost overnight??? In answer to your question there is no softener fitted..well a B&Q wrap around coil...

Also...further info is that I had a shower a short time ago and turned both the hot AND cold taps on full in the bathroom basin....and I enjoyed a piping hot shower for the first time in weeks????? :?:

Also why has everything worked A1 for over two years at full bore with the thermostat set lower on the boiler and with hotter water????....could the mains pressure have changed??....if so why only effect on the upstairs???? :?:

Thanks Gasguru...now why didnt I think of that test??...presenile dimentia I guess...only a few years from retirement now. Anyway...when I set the taps to fill a large saucepan with water at eighteen seconds each tap the water leaving each tap is the same....52 degrees....so please tell me...

Thanks Tony...I really appreciate your reply....I have tried what you suggested and it appears to stop all flow at any of the hot taps...still at least its one thing eliminated. Just prior to reading your posted reply I carried out a test of my own... The hot water leaves the boiler and then...

Hi all :) ..I would like to start by saying that I am an industrial AC engineer so have skills but they are not related to central heating.Just over two years ago I had a new boiler fitted..a Biasi Riva compact 24S....I have been very pleased with it until a few weeks ago when the upstairs...