Data Sheet for Product

Functions
The HTR3.1/A or HTR3.1S/A room operator unit communicates with the HRC3.. room
controller via a serial port, performing the following functions:
• Displays the room temperature setpoint
• Transmits the manual room temperature setpoint adjustment
• Displays the manual room temperature setpoint adjustment
• Transmits the manually set fan speed
•
Displays the manual or automatic fan speed
•
Transmits the "Auto" operating mode signal for automatic selection of the fan speed
•
Detects and transmits the room temperature with an externally connected 10kΩ NTC
room temperature sensor (HTC3.1/A only)
•
Detects and transmits the room temperature with a built-in 10kΩ NTC room
temperature sensor (HTC3.1S/A only)
Types
HTC3.1/A Room operator unit
HTC3.1/SA Room operator unit with built-in sensor
Ordering
When ordering, please specify the quantity, product name and type code:
30 Room operator units HTC3.1/A
Example
Compatibility
See assortment overview, N6301.
Mechanical design
The room operator unit comprises:
• Printed circuit board with the electronic circuit, LCD display, membrane switches for
operation and terminal block
• Front plate
• Operator panel
The components are snap-mounted in the front-plate unit. The operator panel label has
an adhesive strip on the back. After removal of the protective transparent film from the
display window, and of the backing paper from the adhesive operator panel label, the
latter can be affixed to the front plate.
Unlike the HTC3.1/A, the HTC3.1S/A room operator unit has a built-in temperature
sensor.
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Siemens HTC3.1/A, HTC3.1S/A – Room operator units CM2N6319en
Building Technologies 31.07.2008