You can get all of the info on the wiring from the instructions that are with the FA panel, and the devices.
Box mounting may/may not be device boxes; some HS units require a 4x4. Fire wire is RED. Locations are per the Fire Inspector, and heights may have to conform to ADA restrictions.
Basically, the HS are energized from the FA panel, and the pulls activate the panel.
Confirm with your local Fire AHJ, as on this side of the river you would have some hoops to jump thru.