Checking your system pressure on a Greenstar 4000 or Greenstar 8000 Style boiler | Worcester Bosch 

Hi. Would you be able to do a video explaining how to use the energy consumption selection on the latest greenstar range. The boiler manual says you can check the usage for the last 24hrs and last 30 days, but I cannot find the 24hr reading on my greenstar 4000. Is the 30 day reading showing me the average daily usage for the last 30 days? Thankyou.