Carrier RTU OPEN 11-808-427-01 User Manual

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CARRIER CORPORATION ©2010
A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 11-808-427-01 · 11/19/2010

Carrier RTU OPEN 11-808-427-01 Specifications

General

Product Type	Controller
Model Number	RTU OPEN 11-808-427-01
Manufacturer	Carrier
Input Voltage	24 VAC
Application	HVAC control
Communication Protocol	BACnet

Summary

Safety considerations

Installation

Field-supplied hardware

To mount the RTU Open

To wire the controller for power

Using the rooftop equipment control power transformer

Steps for wiring power from the rooftop unit's control power transformer.

Using an auxiliary control power transformer

To set the RTU Open's address

To set the RTU Open's communications protocol and baud rate

Wiring the RTU Open to the MS/TP network

To wire the controller to the network

Instructions for connecting the RTU Open controller to a BACnet MS/TP network segment.

Wiring inputs and outputs

To wire inputs and outputs

Steps for connecting input and output wiring to the RTU Open controller.

Wiring sensors to inputs

Wiring an SPT sensor

To wire the SPT sensor to the controller

Wiring a Supply Air Temperature sensor

To wire the SAT sensor to the controller

Instructions for connecting the SAT sensor using the wiring harness.

Wiring a Duct Air Temperature sensor

To wire a duct sensor to the controller

Wiring an Outdoor Air Temperature sensor

To wire an OAT sensor to the controller

Wiring a CO2 sensor

To wire the CO2 sensor to the controller

Wiring an Outdoor Air Quality sensor

To wire the OAQ sensor to the controller

Wiring a Relative Humidity sensor

To wire the RH sensor to the controller

Wiring a Humidistat

To wire a humidistat to the controller

Wiring an enthalpy switch

To wire an enthalpy switch (outdoor air) to the controller

To wire an enthalpy switch (differential) to the controller

Wiring a status switch

To wire a status switch to the controller

Wiring a compressor safety

To wire a compressor safety input to the controller

Wiring an occupancy switch or door contact

To wire an occupancy switch or door contact

Start-up

Service Test

Configuring the RTU Open's properties

Unit Configuration properties

Defines properties affecting unit operation, including fan mode and occupancy source.

Setpoint properties

Service Configuration properties

Sequence of Operation

Occupancy

Details how the RTU Open determines and operates based on occupancy state.

Supply fan

Configures the supply fan's operating mode and response to alarms.

Cooling

Describes the conditions and sequence for the RTU Open's cooling operation.

Economizer

Power Exhaust

Unoccupied Free Cooling

Optimal Start

Enthalpy control

Indoor Air CO2

Heating

Heat Pump operation

Dehumidification

Demand Limit

Alarms

Unit Configuration

Setpoints

Occupied Setpoints

Defines occupied heating and cooling setpoints, including demand level adjustments.

Unoccupied Setpoints

Alarm Configuration

Service Configuration

Maintenance

Unit