Installing the UC Open
UC Open
CARRIER CORPORATION ©2019
Installation and Start-up Guide
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11
Wiring devices to the UC Open's Rnet port
The Rnet communicates at a rate of 115 kbps and should be wired in a daisy-chain or hybrid configuration.
Supports up to
•
15 wireless and/or ZS sensors (5 per control program)
•
One Equipment Touch
•
One TruVu™ ET Display
NOTES
•
ZS sensors, a Wireless Adapter, and an Equipment Touch can share the Rnet, but not SPT sensors.
•
The Wireless Adapter, Equipment Touch, or TruVu™ ET Display must be powered by an external power source.
Rnet wiring specifications
NOTE
Use the specified type of wire and cable for maximum signal integrity.
Description
4 conductor, shielded or unshielded, CMP, plenum rated cable
Conductor
22 AWG (7x0096) bare copper if Rnet has only sensors
Maximum length
500 feet (152 meters)
Insulation
Low-smoke PVC (or equivalent)
Color Code
Black, white, green, red
Shielding
If shielded, Aluminum/Mylar shield (100% coverage) with TC drain wire, terminated
at controller
UL temperature rating
32–167°F (0–75°C)
Voltage
300 Vac, power limited
Listing
UL: NEC CL2P, or better
To wire ZS sensors to the controller
ZS Sensors are thermistor-based temperature sensors that may optionally sense humidity, CO
2
, or VOC. ZS
Sensors are wired to the Rnet port on i-Vu® Open controllers. You can use the following ZS sensors:
•
ZS Standard
•
ZS Plus
•
ZS Pro
•
ZS Pro-F
