Wiring A Compressor Safety - Carrier RTU Open v3 Installation And Startup Manual

Installing the RTU Open
To wire a status switch to the controller
NOTES
• Binary inputs 3, 5, 8, and 9 are configurable and may be used for Fan Status, Filter Status, Remote
Occupancy, or Door Contacts, if they have not already been used for their default functions.
•
Follow device manufacturer's installation and operating instructions.

Wiring a compressor safety

This is typically provided by the manufacturer with the rooftop equipment. A compressor safety status may be
monitored if available.
Wiring specifications
Cable from sensor to controller:
Maximum length:
RTU Open v3
Installation and Start-up Guide
If <100 ft (30.5 meters)
If >100 ft (30.5 meters)
500 feet (152 meters)
38
22 AWG, unshielded
22 AWG, shielded
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