Data Sheet for Product

Technical Specification Sheet
Document No. 149-865
February 18, 2015
Siemens Industry, Inc. Page 1 of 4
BACnet PTEC Terminal Box (VAV) Controller
The 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.
 Auto-discovery and Auto-addressing over entire
MS/TP network.
 Programmable using PPCL.
 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.
 Advanced digital room unit for temperature, CO
2
,
and relative humidity.
 Supports analog or digital room units with relative
setpoint adjustment and either absolute or
warmer-cooler setpoint adjustments.
 Applications in 550-495PA include a user-
adjustable temperature offset for the room
temperature reading when required for validation
purposes.
 PID control of HVAC systems to minimize offset
and maintain tighter setpoint control.
 Unique control algorithms for specific applications.
 Plenum rated controller.
 Reports airflow in cfm (lps).
 Meets low duct static pressure requirements.
 Separate minimum and maximum air volume
setting for heating and cooling modes.
 Demand Control Ventilation minimum setpoint
(controllable by PPCL).
 Separate minimum night flow setpoint to reduce
energy.
Applications
 Slave Mode (Application 6687)
 VAV Cooling Only (Application 6600)
 VAV Cooling or Heating (Application 6601)
 VAV with Electric Reheat or Baseboard Radiation
(Application 6602)
 VAV with Hot Water Reheat (Application 6603)
 VAV Series Fan Powered with Electric Reheat
(Application 6604)
 VAV Series Fan Powered with Hot Water Reheat
(Application 6605)