To control the size of the circles, go to Type properties and change Fire_Tolarance.
The size of symbol will always follow this formula:
View scale * Fire_Tolarence. Ex. Viewscale is set to 1:200, Tolerance set to 5.
200 * 5 = 1000mm in the model.
To change the FireReq_FireRatingDoor value, change the Fire_Info in Type Properties.