This distribution center supports stores in the Southeast region. The product mix called for the addition of a new freezer/ice cream freezer/dock areas and conversion of the existing freezer/ice cream freezer to medium temp cooler space. Design and construction challenges included installation of new system components with start-up and pull-down, without interruption to existing refrigerated areas. Once the new freezer/ice cream freezer and dock areas were down to temperature, existing freezer and cooler areas could be converted. The existing control system required modification and expansion to keep the existing system components operational during installation.