combi boilers

[joe1983]

hi, does anyone know how to calculate the temperature rise from cold and the flow rate of dhw on a combi boiler please,

thanks

Joe

 

[woodsy]

Measure temp of cold water at sink unit, measure temp. Of hot water when combi has been running a short while. Difference between hot and cold is temp rise. Dhw flow rate is literally how many litres comes out of your hot tap in a minute.

 

[jtsplumbing]

Minimum equipment ; Thermometer , Bucket, Stopwatch, then follow woodsy's advise.

 

[stevetheplumber]

bucket needs to be of a known volume i usually use the customers measuring jug if im stuck

 

[glenno1]

I use a flow cup,not cheap but takes a reading in seconds

 

[joe1983]

Ok thanks everyone for the info