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 . . . . . . . . . . . . . 8
General Information
Overview of Manual . . . . . . . . . . . . . . . . . 11
Model Number Description . . . . . . . . . . . 11
Unit Nameplate . . . . . . . . . . . . . . . . . . . . 11
Compressor Nameplate . . . . . . . . . . . . . . 11
Unit Description . . . . . . . . . . . . . . . . . . . . 11
Indoor Fan Failure Input . . . . . . . . . . . . . 11
Low Pressure Control ReliaTel Control . 11
Refrigerant Circuits . . . . . . . . . . . . . . . . . 11
High Pressure Control ReliaTel Control . 11
Space Temperature / RH Sensor (Optional)
12
High Temperature Sensor . . . . . . . . . . . . 12
Outdoor Air Temperature and Relative Hu-
midity Sensor . . . . . . . . . . . . . . . . . . . . . . 12
Control Input (Occupied / Unoccupied) . 12
Hot Gas Reheat . . . . . . . . . . . . . . . . . . . . . 12
100 Percent Outdoor Air Hood with Damper
and Filters . . . . . . . . . . . . . . . . . . . . . . . . . 12
Modulating Indirect Fired Gas Burner . . 12
Through the Base Electrical with Disconnect
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hinged Access Doors . . . . . . . . . . . . . . . . 12
Modulating Electric Heat . . . . . . . . . . . . . 12
First Aid Measures . . . . . . . . . . . . . . . . . . 13
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Clearances . . . . . . . . . . . . . . . . . . . . 13
Unit Clearances, Curb Dimensions, and Dimen-
sional Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
OAD Units
. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unit Clearances . . . . . . . . . . . . . . . . . . . . 14
Curb Dimensions . . . . . . . . . . . . . . . . . . . 15
Dimensional Data . . . . . . . . . . . . . . . . . . . 16
OAN Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Unit Clearances . . . . . . . . . . . . . . . . . . . . 19
Curb Dimensions . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6
. . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . 11
Unit Weight and Rigging
Unit Weight . . . . . . . . . . . . . . . . . . . . . . . . .23
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . .27
General Unit Requirements . . . . . . . . . . . .27
Main Electrical Power Requirements . . . .28
Condensate Drain Configuration . . . . . . .28
Hot Water Connection Size and Location 28
Chilled Water Connection Size and Location
29
Filter Installation . . . . . . . . . . . . . . . . . . . . .29
Field Installed Power Wiring . . . . . . . . . . .29
Main Unit Power . . . . . . . . . . . . . . . . . . . . . .31
Standard Wiring . . . . . . . . . . . . . . . . . . . . .31
Electrical Phasing (Three-Phase Motors) .33
Compressor Crankcase Heaters . . . . . . . .33
Main Unit Display and ReliaTel Controls .34
Field-Installed Control Wiring . . . . . . . . . .34
Control Power Transformer . . . . . . . . . . .34
Controls Using 24 Vac . . . . . . . . . . . . . . . .34
Controls Using DC Analog Input/Output
(Standard Low Voltage Multiconductor Wire)
35
DC Conductors
. . . . . . . . . . . . . . . . . . . . . . . .35
Factory-Provided Sensors
Pre-Start Check List
. . . . . . . . . . . . . . . . . . . . . .37
System Configuration and Pre-Start
Startup
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Indirect Fired Gas Heating Startup
Startup Procedure . . . . . . . . . . . . . . . . . . .42
Safety Controls . . . . . . . . . . . . . . . . . . . . . .45
Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Monthly Maintenance
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Supply/Return Air Smoke Detector Mainte-
nance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Cooling Season . . . . . . . . . . . . . . . . . . . . .46
Heating Season . . . . . . . . . . . . . . . . . . . . .46
Condenser Coil Cleaning . . . . . . . . . . . . . .46
. . . . . . . . . . . . . . . . .23
. . . . . . . . . . . . . .36
. . . . . . .38
. . . . . . .41
. . . . . . . . . . . . . . . . . .46
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