The best way to put up your BatBnB up on a brick surface is to still use the mounting system that is included with your purchase. However, instead of using wood screws we recommend using Tapcon masonry fasteners such as these which you should be able to pick up at any big box hardware store. Use the pre-drilled holes on the mounting bracket as a template for pre-drilling into your masonry surface.
To be sure that the mounting bracket doesn't split when the tapcons are inserted, consider widening the pre-drilled holes slightly to accommodate the diameter of the fasteners you purchase. We would also caution against overtightening the fasteners, as this could also cause the bracket to split.
Check out our Installation Guide for more information.