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Thank you Mick. I have tested the incoming water and the out coming temp and this has worked out to be a rise in temp of 21.50c at a flow rate of 5 Liters per minute I have had this problem for 4 month and have put the central heating on when i need hot water as this brings the temp up to a...

hi thank you for your information. yes the boiler does fire up when only on DHW and runs like you would exspect but the temp of the water is still cool compared to when the centrel heating is on. after about five minute all the radeators our very hot. the boiler does not drop down too low flame...

Hi can any one help I have a proplum with the hot water if i have the c/h on the hot water is very hot but if the c/h is off the water is just warm i have adjusted the flow to just five litres per minute but this has had little afect. when you have a bath or a shower the radiators become very...