Wiring An Spt Sensor; Rnet Wiring Specifications - Carrier UC Open XP Installation And Startup Manual

Wiring an SPT sensor

The UC Open XP is connected to a wall-mounted space temperature sensor to monitor room temperature.
An i-Vu Open Control System offers the following SPT sensors:
Sensor
SPT Standard
SPT Plus
SPT Pro
SPT Pro Plus
You wire SPT sensors to a controller's Rnet port. An Rnet can consist of any of the following combinations of
devices wired in a daisy-chain or hybrid configuration:
• 1 SPT Plus, SPT Pro, or SPT Pro Plus
•
1–4 SPT Standards
•
1–4 SPT Standards, and 1 SPT Plus, SPT Pro, or SPT Pro Plus
•
Any of the above combinations, plus a BACview
NOTE If the Rnet has multiple SPT Standard sensors, you must give each a unique address on the Rnet. See
the Carrier Sensors Installation Guide.

Rnet wiring specifications

NOTE Use the specified type of wire and cable for maximum signal integrity.
Description
Conductor
Maximum length
UC Open XP/UC Open XP IO
Part # Features
•
Local access port
SPS
• No operator control
•
Slide potentiometer to adjust setpoint
SPPL
•
MANUAL ON button to override schedule
• LED to show occupied status
•
Local access port
•
LCD display
SPP
•
MANUAL ON button to override schedule
• WARMER and COOLER buttons to adjust setpoint
•
INFO button to cycle through zone and outdoor air temperatures,
setpoints, and local override time
• Local access port
•
LCD display
SPPF
• MANUAL ON button to override schedule
•
WARMER and COOLER buttons to adjust setpoint
• INFO button to cycle through zone and outdoor air temperatures,
setpoints, and local override time
•
MODE button to cycle through custom programmed modes
•
FAN SPEED button to adjust fan speed
•
Local access port
4 conductor, unshielded, CMP, plenum rated cable
18 AWG
500 feet (152 meters)
6 , but no more than 6 devices total
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