had a combi installed 6 months ago, now im finding that when in the shoer
(also just running the hot tap) when i turn on the cold the hot flow drops
off to a trickle.
Any ideas where to start looking?
What's the make and model Chris?
Has is just started doing this (over the last month or so now the ambient
water temp is colder) or has it been like this over the summer? What sort
of flow rate do you get through?
Is it just the shower that show a problem?
A friend of mine has just bought the same model and gets the same problem
(well sort of.....). This boiler will raise 9.8L per minute through 35
degrees C. This isn't huge, but should be Ok. If the water in the pipe is 5
degrees then you will be getting it at maximum flow rate at 40 degrees
whcih is only just above body temperature. The water outside will be getting
much colder now and the amount you get through at a decent shower
temperature will be less as the boiler has to heat it through a higher
temperature and therefore you get less water.
Check your flow rate as you suggest, use a jug and then do the maths.
I guess this doesn't really tell you much....
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