Carrier RTU Open v3 User Manual

Installing the RTU Open
RTU Open v3 CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
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To wire the SAT sensor to the controller
1 Connect the wiring harness (OPN-RTUHRN). For details, see To wire inputs and outputs (page 16).
2 Wire the sensor to the wiring harness. See diagram below.
3 Connect to
J2
wires 1 and 2.
4 Verify your sensor readings.
Wiring a duct air temperature sensor
Part #33ZCSENDAT
The RTU Open requires a temperature sensor installed in the supply air stream. The Duct Temperature (DAT)
sensor is generally used when the rooftop unit is NOT equipped with electric heating.
Wiring specifications
Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded
If >100 ft (30.5 meters) 22 AWG, shielded
Maximum length: 500 feet (152 meters)
To wire a DAT sensor to the controller
1 Connect the wiring harness (Part#OPN-RTUHRN). For details, see To wire inputs and outputs (page 16).
2 Wire the sensor to the wiring harness. See diagram below.
3 Connect to
J2
wires 1 and 2.
4 Verify your sensor readings.

Carrier RTU Open v3 Specifications

General

Brand	Carrier
Model	RTU Open v3
Category	Controller
Language	English