To review the calculation details

Click the CIBSE Heat Loss (Basic) icon.
The CIBSE Heat Loss (Basic) dialog box opens displaying the calculation results in the Summary report.
Position the pointer over one of the results.
A pop up window appears displaying the result and prompts you to click for more information.
Click on the Total loss result for one of the rooms.
The results panel changes from the summary results table to the Results Viewer mode which displays the formula used for deriving Total room loss.Each detail of the formula can be selected to view its own formula.
Click on the Total fabric loss detail.
The formula for deriving Total fabric loss is displayed.
Repeat the steps to view additional details.
Click the Back icon to return to the previous formula.
Click the Close icon to exit the details display.
The Summary report view is reopened.