turbo max plus valiant boiler ch fine. hot water downstairs fine upstairs only luke warm
HarrogateGas said:Id go with chrs on this one........faulty mixer tap/shower. Diffuclt to prove although a cheap way is to fit non return valves on the hot supply to any mixer taps or showers.
quote]
Its actually quite easy to prove. Turn off the cold supply inlet to the combi boiler and nothing should come out of any hot outlet!
Problem can arise with some thermostatic showers because they always mix about 10% of cold water to prevent scalding.
Seals in some mixer taps can fail and allow cold to pass into the hot. However if they had been fitted correctly they would have had non return valves.
Tony
Of course, why didn't I think of that?Tony said:Its actually quite easy to prove. Turn off the cold supply inlet to the combi boiler and nothing should come out of any hot outlet!
Haven't read enough web forums!Of course, why didn't I think of that?
Agile said:HarrogateGas said:Id go with chrs on this one........faulty mixer tap/shower. Diffuclt to prove although a cheap way is to fit non return valves on the hot supply to any mixer taps or showers.
quote]
Its actually quite easy to prove. Turn off the cold supply inlet to the combi boiler and nothing should come out of any hot outlet!
Problem can arise with some thermostatic showers because they always mix about 10% of cold water to prevent scalding.
Seals in some mixer taps can fail and allow cold to pass into the hot. However if they had been fitted correctly they would have had non return valves.
Tony
Depends if its only passing under pressure though.
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