Any problems should have been apparent when you commissioned and filled in the Benchmark Certificate. Tony
You should take more care over your spelling Tony. People might get confusedIts still not clear to me which model but if its ant 32 kW Biais boiler the hot water performance is as good as any other boiler of the same power.
Perhaps you have a very high mains water pressure but in general most boiler will not deliver much more than their rated power with a typical London supply pressure of about 1.5 Bar.
Any faults on the hot water will be discovered when you measure the temperature rise and flow rate for the DHW. Similarly on Ch when you measure the flow and return temps and power input.
Tony
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