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CaptiveAire RTULink - User Manual

CaptiveAire RTULink
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A0026630
July 2021 Rev. 5
RTULink Monitoring and Control
Installation, Operation, and Maintenance Manual
Save these instructions. This document is the property of the owner of this equipment and is required
for future maintenance. Leave this document with the owner when installation or service is complete.
RECEIVING AND INSPECTION
Upon receiving unit, check for any interior and exterior damage, and if found, report it
immediately to the carrier. Also check that all accessory items are accounted for and are
damage free.
WARNING!!
Installation of this control panel should only be performed by a qualified professional who has
read and understands these instructions and is familiar with proper safety precautions.
Improper installation poses serious risk of injury due to electric shock and other potential
hazards. Read this manual thoroughly before installing or servicing this equipment. ALWAYS
disconnect power prior to working on module.

Questions and Answers

Summary

WARRANTY

SAFETY INFORMATION

General

Describes the RTULink system and general safety.

Installation

Provides safety precautions for installation procedures.

OVERVIEW

INSTALLATION OF HARDWARE COMPONENTS

RTULink

Instructions for installing the main RTULink board.

RTULink Control Kit Thermistors

Details on installing thermistor sensors.

Outside Air Sensor

Installation of the outdoor air temperature sensor.

Return Air Sensor

Installation of the return air temperature sensor.

Discharge Air Sensor

Installation of the discharge air temperature sensor.

RTULink to RTU Wiring

Wiring the RTULink board to the RTU.

Thermostat (optional)

Wiring an external thermostat to the RTULink.

Space Thermistor - Wall Mount (optional)

Installing a wall-mounted space temperature sensor.

Modbus Communication Wiring

Connecting RTULinks for Modbus communication.

Optional Sensors

Temperature and Humidity Sensor - Wall Mount

Installing wall-mount temp/humidity sensors.

Temperature and Humidity Sensor - Outdoor Mount

Installing outdoor temp/humidity sensors.

Relative Humidity - Duct Mount (Return or Discharge)

Installing duct-mounted RH sensors.

Carbon Dioxide Sensor - Duct Mount

Installing duct-mounted CO2 sensors.

Current Transducer

Installing current transducers for energy monitoring.

Optional Outputs

Damper;Economizer (0-10 VDC)

Controlling dampers/economizers with 0-10VDC output.

Powered Exhaust Coil Signal ON;OFF (24 VAC)

Controlling powered exhaust with 24VAC signal.

Powered Exhaust (0-10 VDC)

Controlling powered exhaust with 0-10VDC signal.

Occupied;Unoccupied Signal (24 VAC)

Using a 24VAC signal for occupancy control.

START-UP PROCEDURE

RTULink MODES OF OPERATION

Full Control

Mode for maximum remote control and customization.

Monitor Only

Mode for monitoring without control.

External Mode

Hybrid mode with thermostat control and RTULink logic.

Emergency Heat

Operation mode for emergency heating function.

FUNCTIONALITY

Info

Viewing operating information and status.

Configuration

Accessing and modifying system settings and parameters.

Faults

Information on active and historical faults.

Reboot

Procedure for restarting the RTULink system.

Main Board HMI Menu Tree

Space HMI and Remote Room Sensor Installation

Space HMI Operation

Accessing Menu Configurations

How to navigate and access HMI settings.

Remote (HMI) Control Panel

Connecting and using remote HMIs.

Space HMI Menu Structure

Overview of user, factory, and service menus.

Space HMI Functionality

Description of user settings and options available on the HMI.

Factory Settings

Heating Config

Parameters for heating operation and staging.

Cooling Config

Parameters for cooling operation and staging.

Board Config

Settings related to the control board itself.

Blower Config

Configuration for blower operation and delays.

Outdoor Air Config

Configuration for economizer and CO2 based ventilation.

Service Settings

Settings related to service, monitoring, and factory reset.

TROUBLESHOOTING

Faults

Lists common RTULink fault messages and corrective actions.

COMPONENT DESCRIPTION

Temperature Sensor - Wall Mount

Description of wall-mount temperature sensors.

Current Sensor

Description of current transducers for energy measurement.

Temperature and Humidity Sensor - Outdoor Mount

Description of outdoor temp/humidity sensors.

Carbon Dioxide Sensor - Duct Mount

Description of duct-mounted CO2 sensors.

APPENDIX A

Daisy Chain Topology

Diagrams for daisy chain communication wiring.

Star Topology

Diagrams for star communication wiring.

APPENDIX B

APPENDIX C

Fixed Dry Bulb Economizer

Explanation of fixed dry bulb economizer operation.

Differential Dry Bulb Economizer

Explanation of differential dry bulb economizer operation.

Fixed Enthalpy Economizer

Explanation of fixed enthalpy economizer operation.

Differential Enthalpy Economizer

Explanation of differential enthalpy economizer operation.

Start-Up and Maintenance Documentation

CaptiveAire RTULink Specifications

General IconGeneral
ManufacturerCaptiveAire
Enclosure RatingNEMA 4X
Power Supply24 VAC/DC
Communication ProtocolModbus RTU
Operating Temperature-40°C to 70°C
TypeRemote Terminal Unit (RTU)