Here's my go to method for adding pyro to any fracture simulation. If you have any questions don't hesitate to ask and I'd love to help out if I can.
0:00 - Intro
0:19 - Geo Setup
0:55 - Fracture Setup
4:58 - Collisions Setup
6:34 - Pyro/Debris Sourcing
8:50 - Pyro Setup
17:42 - Setup Overview