Specifications include, but are not limited to: There are a total
of five units that serve this building. All five units are air cooled DX with outdoor compressors and
indoor air handlers, DX coils and electric heating. Select units have control and/or backdraft
dampers and duct mounted smoke detectors and all units are monitored and controlled by a Johnson
Controls BAS system. Three of the units are air cooled heat pumps but due to compressor
replacements and other obsolescence issues, it is believed that they are no longer operating as heat
pumps. Units 1A and 1B provide 7 x 24 x 365 cooling to the Radio Equipment and Data Center room.
These units are redundant to each other with only one unit operating at any time. The BAS system
sequences the units to maintain uniform run-time and starts the standby unit should the lead unit fail
to maintain temperature or to operate. Both units connect to a common supply duct that distributes
air into the space. These units also share a common ducted return. These units are constant volume.
Units 2A and 2B provide conditioned air to open office area in a single zone, constant volume
configuration. Five lay-in type diffusers supply 2,250 cfm of air to this space. Unit 3A provides
conditioned air to the break room, main entry corridor, restrooms and the emergency staff room.
This unit supports 5 VAV terminals.