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Installing the RTU Open
To install the RTU Open:
1
Mount the controller (page 6).
2
Wire the controller for power (page 7).
To use the rooftop equipment control power transformer (page 8).
○
To use an auxiliary control power transformer (page 9).
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3
Set the controller's address (page 11).
4
Set the protocol and baud rate (page 11).
5
Wire to the BACnet MS/TP or BACnet ARC156 network (page 12, page 12).
6
Wire inputs and outputs (page 13).
7
Wire sensors to the controller (page 20).
Field-supplied hardware
An RTU Open retrofit installation may require the following field-supplied components:
•
wiring harness: Part #OPN-RTUHRN
•
transformer – 24 Vac, 20 VA minimum
•
wiring
Application-dependent components:
•
carbon dioxide sensors
•
damper/damper actuator
•
differential pressure switch
•
enthalpy switch
•
fan status switch
•
door switch
•
fan section door switch
•
relative humidity sensor
•
remote occupancy contact
•
smoke detector
•
temperature sensors
RTU Open v3
Installation and Start-up Guide
5
Installing the RTU Open
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