Trane Horizon OABD Series - User Manual

Horizon™ Outdoor Air Unit
Horizon UC600 Controls Program Version 12.0
Installation, Operation, and Maintenance
February 2023
OAU-SVX007A-EN
Important: Proper completion of the tasks outlined in this Installation, Operation, and Maintenance manual require and assume
the technician has been certified as a start up technician for the Horizon Outdoor Air unit. This includes working
knowledge of the Tracer TU program.
Models
OABD, OABE, OABF, OADG, OAGD, OAGE, OAGF, OAKD, OAKE, OAKF, OAND, OANE, OANF,
OANG
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.
AVERTISSEMENT DE SÉCURITÉ
L’installation et l’entretien de cet équipement doivent être assurés exclusivement par du personnel qualifié.
L’installation, la mise en service et l’entretien d’équipements de chauffage, de ventilation et de climatisation (CVC)
présentent un danger et requièrent des connaissances et une formation spécifiques. Une installation, un réglage ou une
modification inappropriés d’un équipement par une personne non qualifiée peut provoquer des blessures graves, voire
la mort. Lors de toute intervention sur l’équipement, respectez les consignes de sécurité figurant dans la
documentation, ainsi que sur les pictogrammes, autocollants et étiquettes apposés sur l’équipement.

Summary

Installation, Operation, and Maintenance

Safety Warnings

Crucial safety advisories for installation, operation, and servicing.

Introduction

Warnings, Cautions, and Notices

Defines advisory types (Warning, Caution, Notice) for safety.

Proper Field Wiring and Grounding

Highlights hazards and requirements for field wiring.

Model Number Descriptions

Horizon Outdoor Air Unit

Details specific to the Horizon Outdoor Air Unit series.

Model: OAK Rev5 and OAN Rev5

Specific model series OAK Rev5 and OAN Rev5.

Model Number Breakdown by Digit

Defines each digit's meaning in the model number.

General Information

Overview of Manual

Provides guidance on using the manual effectively.

Model Number Description

Explains the alphanumeric identification code for unit identification.

Unit Nameplate and Description

Details on unit nameplate data and pre-shipment checks.

Control System Inputs

Describes inputs like fan failure, pressure controls, and temp sensors.

Installation

Ductwork

Guidelines for installing ductwork to minimize noise and ensure weatherproofing.

Hazardous Service Procedures

Critical safety precautions for technicians performing service.

Units with Indirect Fired Gas Heat

Specific ductwork considerations for indirect fired gas heat units.

Pre-Start Up

Start-Up

Steps for pre-start up checks and unit setup.

Indirect Fired Gas Heating Start Up

Procedure for starting indirect fired gas heating systems.

Cooling Start-Up

Procedure for initiating cooling operation, including temperature considerations.

Maintenance

Monthly Maintenance

Routine checks and maintenance tasks performed monthly.

Filters

Inspection and maintenance of air filters.

Condenser Coil Cleaning

Procedure for cleaning condenser coils to maintain efficiency.

Cooling Season

Maintenance checks specific to the cooling season.

Alarms and Troubleshooting

Microprocessor Control

Troubleshooting unit diagnostics and system status.

System Alarms

Overview of unit alarms and troubleshooting guidance.

RTRM Failure Modes

Identifies causes for RTRM failure indications.

Appendix

OAU Filter Guide

Guide detailing filter types, sizes, and quantities for OAU units.

Field Installation of Factory-Provided Sensors

Instructions for installing factory-provided sensors.

Sensor Specifications

Details sensor specifications, including accuracy and operating range.

Sequence of Operation v12.0

Occupied Control

Describes the unit's behavior when in occupied mode.

Supply Fan Operation

Details supply fan operation sequences and control methods.

Dehumidification Mode

Explains dehumidification sequences and control strategies.

Heating and Cooling Mode

Describes how heating and cooling modes are determined and controlled.

Start-Up Form

Trane Horizon DOAS

Covers the start-up form for Trane Horizon DOAS units.

Pre-Startup Checklist

Checklist for pre-startup verification of unit components.

Voltages

Procedure for checking and recording unit voltages.

Limited Warranty

1-year Manufacturer Parts Warranty

Details the terms of the 1-year manufacturer parts warranty.

Horizon Models

Warranty coverage and limitations for Horizon units.

Trane Horizon OABD Series Specifications

General

Category	Heat Pump
Refrigerant	R-410A
Voltage	208/230V
Cooling Capacity Range	1.5 - 5 Ton
Heating Capacity Range	1.5 - 5 Ton
SEER Rating	Up to 16
Stages	Single Stage
Series	Horizon OABD
HSPF Rating	Up to 9 HSPF