Thanks for your response SirTux
It looks like the link you provided refers to the images that can be downloaded by the Univention Management Console module. The image we are using is the .iso found at:
updates.software-univention.de/d ... ge.img.iso
We needed to do manual installs because our DHCP server (router) is not smart enough to assign the UCS server as tftpd
If we are not able to get root for the downloaded .iso, is there another way to deploy ucc on a network where UCS is not the DHCP server?