Data Sheet for Product

Page 2 of 6
Siemens Industry
Fan Coil / Unit Conditioners
 Two-pipe Cooling or Heating with additional Hot
Water Coil (Application 6650)
 Cooling and Heating (Application 6651)
 Two-stage Cooling and Electric Heat (Application
6652)
 Two-stage Cooling and Hot Water Heat
(Application 6653)
 Cooling and Electric Heat or VAV Pressure
Dependent with Electric Heat (Application 6654)
 Slave Mode (Application 6689)
Control algorithms are pre-programmed. The
controller is ready to operate after selecting the
application. If desired, the operator may adjust the
room temperature setpoints and other parameters.
The controller is designed for operation and
modification without vendor assistance.
If required, new custom code using Siemens Industry,
Inc. PPCL programming language can be added to
replace or supplement the standard application
residing in the controller. This provides the flexibility to
meet many job specifications with the assurance of
having a proven and tested standard application to
rely upon.
Hardware
Controller Board
The Siemens BACnet PTEC Unit Conditioner
Controller consists of an electronic controller
assembly.
This controller provides all wiring terminations for
system and local communication and power. The
cable from the room sensor (purchased separately)
connects to an RJ-11 jack on the controller. All other
connections are removable terminal blocks. The
controller assembly is mounted on a plastic track that
mounts directly on the terminal box. A specific
enclosure and power supply are required in order to
meet the stringent smoke control standards. See the
Product Ordering Information table for part numbers.
The controller interfaces with the following external
devices:
 Floating control valve and damper actuators
 Temperature sensors (room, pipe, and duct)
 Service and commissioning tools
 Analog input devices (thermistor sensors, room
temperature sensor, room setpoint dial, auxiliary
temperature sensor)
 Digital input devices (dry contacts from motion
sensors, alarm contacts, switches)
 Digital output devices (fan speeds, stages of heat,
stages of cooling, 2 position valves, floating
control actuators)
UL864 Listed for Smoke Control
The BACnet PTEC hardware has passed stringent
electrical and thermal tests that ensure increased
product reliability and performance as a part of a
Siemens engineered smoke control system. The
BACnet PTEC is used to control the operation of the
fans and dampers based on the smoke control
strategy being initiated in the supervisory controller.
Room Sensor/Room Unit
The room sensor connection to the controller board
consists of a quick-connect RJ-11 jack. This
streamlines installation and reduces controller start-up
time.
Combination Temperature, Carbon Dioxide,
and Relative Humidity Models
The Series 2200/2300 range of BACnet
Programmable TEC (PTEC) room units includes
temperature only or combination
temperature/humidity, temperature/CO
2
, or
temperature/CO
2
/humidity models. For these models,
all measurement variables—CO
2
, temperature and
relative humidity values—are passed digitally to the
PTEC. This information is passed from the room unit
through the RJ-11 cable to the RTS port on the
PTEC.
NOTE:
A CO
2
power module (product
number AQM2200) is also needed for
the CO
2
sensor option to function.