Data Sheet for Product
Technical Specification Sheet
Rev. 1, May 2002
Document No. 149-438
Page 1 of 3
LTEC Fan Coil Unit Controller
Description
DescriptionDescription
Description
The LonMark
-compliant LTEC™ Fan Coil Unit (FCU)
Controllers provide direct digital control of fan coil
units. The LTEC FCU Controller is designed to
reside on the Siemens Building Technologies, Inc.
APOGEE
LonWorks
network, providing seamless
interaction with all LonMark products. The LTEC
offers cost-effective flexibility by allowing selection
of the best point-configuration platform to meet any
FCU application requirement.
Features
• Conforms to the LonMark
inter-operability
guidelines, enabling information sharing with other
LonMark products
• LonMark-compliant with Space-Comfort Controller
functional profile number 8501
• Field-selectable parameters allow entry and
updating of set point and control parameters via
the APOGEE Interface
• Network-wide monitoring and commanding from the
Room Sensor and/or LTEC controller
• LTEC offers two I/O platform styles for cost-effective
selection to meet your application needs
• Advanced PID control minimizes offset and
maintains tighter set-point control
• Return from power failure without operator
intervention
Applications
The LTEC FCU Controller can be configured to control
a variety of fan-coil unit applications, including:
• Fan coil cooling only
• Fan coil heating only
• Two-pipe fan coil unit shared cooling / heating
• Four-pipe fan coil unit cooling and heating
• Fan coil unit 1 to 2 stage cooling and electric heat
or hot water heat
The LTEC FCU Controller can control perimeter heat
in addition to any of the above configurations.
Additionally, based upon availability of input and output
capacity and occupancy sensors can be controlled via
these applications.
Hardware
Controller Board
Controller BoardController Board
Controller Board
The LTEC Controller Board is available in the following
styles:
• 4 Inputs, 6 Digital Outputs, 1 Room Sensor port
• 5 Inputs, 8 Digital Outputs, 2 Analog Outputs, 1
Room Sensor port