Table Of Contents - Trane Horizon OADG Series Installation, Operation And Maintenance Manual

Table of Contents

Model Number Descriptions
Horizon Outdoor Air Unit
Model: OADG and OANG . . . . . . . . . . . . . 9
General Information
Overview of Manual . . . . . . . . . . . . . . . . . 12
Model Number Description . . . . . . . . . . . 12
Unit Nameplate . . . . . . . . . . . . . . . . . . . . 12
Compressor Nameplate . . . . . . . . . . . . . . 12
Unit Description . . . . . . . . . . . . . . . . . . . . 12
Indoor Fan Failure Input . . . . . . . . . . . . . 12
Low Pressure Control ReliaTel Control . 12
Refrigerant Circuits . . . . . . . . . . . . . . . . . 12
High Pressure Control ReliaTel Control . 12
Space Temperature / RH Sensor (Optional)
13
High Temperature Sensor . . . . . . . . . . . . 13
Outdoor Air Temperature and Relative Hu-
midity Sensor . . . . . . . . . . . . . . . . . . . . . . 13
Control Input (Occupied / Unoccupied) . 13
Hot Gas Reheat . . . . . . . . . . . . . . . . . . . . . 13
100 Percent Outdoor Air Hood with Damper
and Filters . . . . . . . . . . . . . . . . . . . . . . . . . 13
Modulating Indirect Fired Gas Burner . . 13
Through the Base Electrical with Disconnect
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hinged Access Doors . . . . . . . . . . . . . . . . 13
Electric Heat . . . . . . . . . . . . . . . . . . . . . . . 13
Supply and Exhaust Piezo Fan Rings . . . 13
ERV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ERV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hot Water Coils . . . . . . . . . . . . . . . . . . . . . 14
Suction Pressure Monitoring . . . . . . . . . 14
Head Pressure Control . . . . . . . . . . . . . . . 14
First Aid Measures . . . . . . . . . . . . . . . . . . 14
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unit Clearances . . . . . . . . . . . . . . . . . . . . 15
Unit Clearances, Curb Dimensions, and Dimen-
sional Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
OAD Units
. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Unit Clearances . . . . . . . . . . . . . . . . . . . . 16
6
. . . . . . . . . . . . . . 9
. . . . . . . . . . . . . . . 9
. . . . . . . . . . . . . . . . . . . . 12
Curb Dimensions . . . . . . . . . . . . . . . . . . . .17
Dimensional Data . . . . . . . . . . . . . . . . . . . .18
OAN Units
. . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Unit Clearances . . . . . . . . . . . . . . . . . . . . .21
Curb Dimensions . . . . . . . . . . . . . . . . . . . .21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Unit Weight and Rigging
Unit Weight . . . . . . . . . . . . . . . . . . . . . . . . .25
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . .29
General Unit Requirements . . . . . . . . . . . .30
Main Electrical Power Requirements . . . .30
Condensate Drain Configuration . . . . . . .30
Hot Water Connection Size and Location 31
Chilled Water Connection Size and Location
31
Filter Installation . . . . . . . . . . . . . . . . . . . . .32
Field Installed Power Wiring . . . . . . . . . . .32
Main Unit Power
. . . . . . . . . . . . . . . . . . . . . .34
Standard Wiring . . . . . . . . . . . . . . . . . . . . .34
Electrical Phasing (Three-Phase Motors) .35
Compressor Crankcase Heaters . . . . . . . .36
Main Unit Display and ReliaTel Controls .36
Field-Installed Control Wiring . . . . . . . . . .36
Control Power Transformer . . . . . . . . . . .37
Controls Using 24 Vac . . . . . . . . . . . . . . . .37
Controls Using DC Analog Input/Output
(Standard Low Voltage Multiconductor Wire)
37
DC Conductors . . . . . . . . . . . . . . . . . . . . . . . .38
Factory-Provided Sensors
Pre-Start Check List
. . . . . . . . . . . . . . . . . . . . . .39
System Configuration and Pre-Start
Pre-Start Up
. . . . . . . . . . . . . . . . . . . . . . . . . .50
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Cooling Start Up . . . . . . . . . . . . . . . . . . . . .50
Startup
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Indirect Fired Gas Heating Startup
Startup Procedure . . . . . . . . . . . . . . . . . . .53
. . . . . . . . . . . . . . . . .25
. . . . . . . . . . . . . .38
. . . . . . .40
. . . . . . .52
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