Intergas HRE 28/24 Hot Water Only Warm

there is a good chance that there is some 22mm pipework still present when the cylinder was removed and the isar installed. gas rates and working pressure need checking too, as mentioned before.

if you look at the benchmark section of your boiler manual, it should be filled in and signed by your installer (and yourself) gas rates and temperature measurements, flow rates etc.
if not you need to speak to him again.
Yep, that is all filled in (I assume) correctly.

I can provide this info if it will be of any help in this situation. :)

Thanks.

EDIT: Just to update. I tried adjusting the cold flow rate using the blue valve under the boiler but it was virtually impossible to get the flow rate to 10 lpm. It was either a dribble or too fast. Also, the noise was unbearable! :(

I have left the stop tap controlling the flow for now. Hot and cold are both at about 10 lpm.
 
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I am not sure about Intergas but most boiler makers will not do warranty repairs on any boiler where the Benchmark Certificate has not been completed.

In fact Gas Safe consider them as At Risk because the have not been commissioned ! That means they should be turned off and not used!

Another statement that is hyperbole.

One of the reasons Gas Engineers have a bad reputation with customers is a perceived draconian and self aggrandising desire to cut people off and write warning notices. Statements like this - that are simply untrue - only reinforce the myth.
 
would be interesting to see what the hot water flow rate figure is in your benchmark form and the temperature. also gas rates for hot water.
 

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