Data Sheet for Product

Technical Specification Sheet
Document No. 149-948
May 30, 2012
Siemens Industry, Inc.
Document No. 149-948
Page 1 of 5
BACnet Heat Pump Controller
Figure 1. BACnet Heat Pump Controller.
The BACnet Heat Pump Controller (Figure 1)
provides high performance Direct Digital Control
(DDC) for room temperature control of heat pumps.
The BACnet Heat Pump Controller can operate
stand-alone or can be networked to perform complex
HVAC control, monitoring and energy management
functions. This controller communicates with the
Siemens controls system using BACnet MS/TP.
Features
• Communicates using BACnet MS/TP protocol
for open communications on BACnet MS/TP
networks
• BTL listed as a B-ASC device
• PID control of HVAC systems to minimize offset
and maintain tighter setpoint control
• Unique control algorithms for specific
applications
• 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
• Meets low duct static pressure requirements
• No calibration required, thereby reducing
maintenance costs
• Separate minimum and maximum air volume
setting for heating and cooling modes
• Control capable of modulating floating control
electronic or electric damper actuator
• Damper status can be reported in either
percentage open notation with floating control or
in voltage notation with 0-10 Vdc actuators
• User-adjustable offset for the room temperature
reading when required for validation purposes
Applications
• Single-stage heat pump control
• Multiple compressor with reversing valve and
mixed air control
• Heating and cooling compressors and mixed air
Control algorithms are preprogrammed. The
controller is ready to operate after selecting the
application. If desired, the operator may adjust the
air volume setpoints in cfm (lps), room temperature
setpoints and other parameters. The controller is
designed for operation and modification without
vendor assistance.
Hardware
Controller Board
The BACnet Heat Pump Controller consists of an
electronic controller assembly and a differential
pressure transducer. This controller provides all
wiring terminations for system and local