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Horizon OADG Series
Trane Horizon OADG Series User Manual
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Pre-Start Up
OAU-SVX007A-EN
91
4.
V
ar
iable spee
d
compressor
.
a.
Override compr
essor 1 ON.
b.
Override circu
it 1 to 0%.
c.
Override HGRH to 100%
.
d.
Maintain head pressu
r
e 400 psi.
e.
Record
electrical
da
ta,
refrigerant
pressures,
s
a
turated
temperature
and
li
n
e
temperat
u
r
e
on
horizon.
St
art-Up
sheet (available at the end of this document).
90
92
Table of Contents
Table of Contents
6
Model Number Descriptions
9
Horizon Outdoor Air Unit
9
Model: OAK Rev5 and OAN Rev5
9
Horizon Outdoor Air Unit
12
Model: OADG Rev6 and OANG Rev6
12
Horizon Outdoor Air Unit
15
Model: OAB Rev5 and OAG Rev5
15
General Information
18
Overview of Manual
18
Model Number Description
18
Unit Nameplate
18
Compressor Nameplate
18
Unit Description
18
Indoor Fan Failure Input
18
Low Pressure Control Reliatel Control
18
High Pressure Control Reliatel Control
18
Space Temperature/Rh Sensor (Optional)
18
Outdoor Air Temperature and Relative Humidity Sensor
19
Hot Gas Reheat
19
Percent Outdoor Air Hood with Damper and Filters
19
Modulating Indirect Fired Gas Burner
19
Through the Base Electrical with Disconnect
19
Switch
19
Through the Base Gas Piping
19
Hinged Access Doors
19
Modulating Electric Heat
19
Supply and Exhaust Piezo Fan Rings
19
Exhaust Dampers
20
Primary Heaters
20
Space Temperature/Humidity Sensor
21
Fans
21
Filter Status Switches
22
Airflow Monitoring
22
Unit Inspection
23
First Aid Measures
23
Unit Clearances
23
Unit Clearances, Curb Dimensions, and Dimensional Data
24
OAK Units
24
OAN Units
27
Curb Dimensions
28
Dimensional Data
29
OAB Units
31
Indirect-Fired OAG Units
33
Outdoor WSHP Units
36
OABE Units
36
Indirect-Fired OAGE Units
38
OAKE Units
41
OANE Units
43
Curb Dimensions
44
Dimensional Data
45
Indoor WSHP Units
46
OABE Units
46
OAGE Units
47
OAKE Units
49
OANE Units
50
OAD Units
52
Unit Clearances
52
Curb Dimensions
53
Dimensional Data
54
OAN Units
57
Unit Clearances
57
Curb Dimensions
57
Dimensional Data
59
Unit Weight and Rigging
62
Unit Weight
62
Corner Weight
64
Corner Weight
66
Rigging
66
Rigging
67
Unit Weight
68
Rigging
70
Rigging
72
Installation
74
Ductwork
74
Units with Indirect Fired Gas Heat
74
General Unit Requirements
75
Condensate Drain Configuration
75
Main Electrical Power Requirements
76
Hot Water Control Valve Wiring
76
Chilled Water Connection Size and Location
76
Filter Installation
77
Opening the Collapsed Exhaust Damper Hood
77
Field Installed Power Wiring
78
Horizon Water Source Heat Pump Field Connection Instructions
79
OAB if Heater Air Inlet Hood and Flue Assembly Instructions for Outdoor Installations
80
Venting of Furnace for Indoor Installations
82
Hot Water Connection Size and Location
84
Main Unit Power
85
Standard Wiring
85
Voltage Imbalance
85
Electrical Phasing (Three-Phase Motors)
86
Compressor Crankcase Heaters
87
Main Unit Display and Reliatel Controls
87
Field-Installed Control Wiring
87
Control Power Transformer
87
Controls Using 24 Vac
88
Controls Using DC Analog Input/Output (Standard Low Voltage Multiconductor Wire)
88
DC Conductors
89
Factory-Provided Sensors
89
Pre-Start up
90
Start-Up
90
Cooling Start-Up
90
Start-Up
92
Indirect Fired Gas Heating Start-Up
92
Start-Up Procedure
93
Safety Controls
95
Maintenance
96
Monthly Maintenance
96
Filters
96
Filter Installation
96
Supply/Return Air Smoke Detector Maintenance
96
Cooling Season
96
Heating Season
96
Condenser Coil Cleaning
97
Final Process
98
Alarms and Troubleshooting
99
Microprocessor Control
99
System Alarms
99
Sensor Failure Alarm Display
99
RTRM Failure Modes
100
Appendix
106
OAU Filter Guide
106
Field Installation of Factory-Provided Sensors
108
Sequence of Operation V12.0
114
Occupied Control
114
Supply Fan Operation
114
Economizer Operation
114
Ventilation Mode
115
Dehumidification Mode
115
Heating and Cooling Mode
117
Heating Mode
117
Cooling Mode
117
Exhaust Fan Starting Sequence
117
Exhaust Fan Operation
117
Energy Recovery Wheel (ERV)
118
Additional Details on Operation
118
Evaporator Coil Frost Protection
118
Hot Gas Reheat
118
Heat Pump Operation
119
Air Source Heat Pumps
119
Split/Dual Exhaust and Return Air Paths
120
Start-Up Form
121
Trane® Horizon™ DOAS
121
Pre-Startup Checklist
121
Voltages
121
Motor Data
122
Compressor Data
122
Actuators
122
Refrigeration Startup
123
Test Procedures
123
Indirect Fired Gas Heat Start-Up
124
Furnace Data
124
Gas Pressure Settings
124
Electric Heat Start-Up
124
Heater Data
124
Direct Fired Gas Heat Start-Up
125
Final Notes
126
Limited Warranty 1-Year Manufacturer Parts Warranty
127
Horizon Models
127
4
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Trane Horizon OADG Series Specifications
General
Brand
Trane
Model
Horizon OADG Series
Category
Heat Pump
Language
English
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