This module is responsible for generating a WarmupCooldown status. For VAV Single Duct, it sequences the primary heating (hot supply air), box heating and supplemental heating. For warmup, it starts with primary heating and then adds box or supplemental heating based on the heating priority. For VAV Dual Duct, the hot duct is considered box heating and there is no primary heating. For warmup, it uses supplemental heating or box heating based on the heating priority.
You can view and modify the module in this group’s logic, but the finite state machine logic cannot be modified. For information on how the FSM determines the state, see FSM (WarmupCooldown Sequencing).