Data Sheet for Product

Technical Specification Sheet
Document No. 149-830
September 24, 2014
Siemens Industry, Inc. Page 1 of 6
Siemens BACnet Programmable TEC
Terminal Box (VAV) Controller
The new Siemens BACnet PTEC Terminal Box (VAV)
Controller provides high performance Direct Digital
Control (DDC) of pressure-independent, variable-air-
volume zone-level routines. The Siemens BACnet
PTEC Terminal Box (VAV) Controller can operate
stand-alone or can be networked to perform complex
HVAC control, monitoring and energy management
functions and is designed to reside on any BACnet
control system.
Features
 Communicates using BACnet MS/TP protocol for
open communications on BACnet MS/TP
networks.
 BTL listed as a B-ASC device.
 Programmable using PPCL.
 Plenum rated controller.
 Setpoints and control parameters assigned and
changed locally or remotely.
 Setpoints and control parameters stored in
Electrically Erasable Programmable Read Only
Memory (EEPROM)—no battery backup required.
 Returns from power failure without operator
intervention.
 No calibration required, thereby reducing
maintenance costs.
 PID control of HVAC systems to minimize offset
and maintain tighter setpoint control.
 Unique control algorithms for specific applications.
 Reports airflow in cfm (lps).
 Meets low duct static pressure requirements.
 Separate minimum and maximum air volume
setting for heating and cooling modes.
 Applications in 550-495P include a user-
adjustable temperature offset for the room
temperature reading when required for validation
purposes.
Applications
 Slave Mode (Application 6587)
 VAV Cooling Only (Application 6520)
 VAV Cooling or Heating (Application 6521)
 VAV with Electric Reheat or Baseboard Radiation
(Application 6522)
 VAV with Hot Water Reheat (Application 6523)
 VAV Series Fan Powered with Electric Reheat
(Application 6524)
 VAV Series Fan Powered with Hot Water Reheat
(Application 6525)
 VAV Parallel Fan Powered with Electric Reheat
(Application 6526)