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RAUC-C20
Trane RAUC-C20 User Manual
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Literature Order Number
SS-S
VX09A-EN
Date
June 2008
Supersedes
RAUC-IOM-1
4 June 2007
T
rane has
a policy of continuous product and pro
duct data improvement and reserves the right to
c
hange design and specific
ations without notice.
111
Table of Contents
Default Chapter
3
Table of Contents
3
General Information
5
Model Number Description
5
Installation
7
Unit Inspection
7
Unit Clearances
7
Unit Dimensions & Weight Information
8
Foundation
8
Rigging
23
Unit Isolation
24
Leveling the Unit
25
Shipping Fasteners
26
General Unit Requirements
27
Refrigerant Piping Requirements
27
EVP Chilled Water Piping Requirements
28
Main Electrical Power Requirements
28
Field Installed Control Wiring Requirements
29
Low Voltage Wiring (AC & DC)
31
Refrigerant Line Components
31
Refrigerant Piping
34
Suction Line Piping
34
Liquid Line Piping
35
Evaporator Piping
36
Hot Gas Bypass for Commercial Comfort-Cooling Applications
37
Optional Pressure Gauges
37
Final Refrigerant Pipe Connections
37
Brazing Procedures
38
Leak Testing Procedure
39
Chilled Water Piping
40
Final Water Piping Connections
44
Field Installed Power Wiring
45
Disconnect Switch External Handle (Factory Mounted Option)
45
Main Unit Power Wiring
46
Power Wire Sizing and Protection Device
47
Field Installed Control Wiring
49
Controls Using 115 VAC
49
Controls Using 24 VAC
51
Controls Using DC Analog Input/Outputs
51
Economizer Actuator Circuit
52
No System Control
53
Field Connection Diagram Notes for All System Control Options
55
Variable Air Volume Control (Honeywell W7100A)
56
Discharge Air Sensor (Honeywell 6RT3)
56
Suction Line Thermostat
57
Night Setback
57
EVP Chiller Control
58
Chilled Water Temperature Sensor (Honeywell 6RT2)
60
Outside Air Thermostat (5S57 Field Provided)
61
Constant Volume Control (Honeywell 973)
63
System Pre-Start Procedures
68
System Evacuation Procedures
69
Discharge Air Controller Checkout (Honeywell W7100A)
71
Discharge Air Sensor Checkout (Honeywell Sensor)
74
Economizer Actuator Checkout
74
EVP Chiller Control Checkout (Honeywell W7100G)
75
Chilled Water Sensor Checkout (Honeywell Sensor)
77
Master Energy Control Checkout
78
Zone Thermostat Checkout (Honeywell T7067)
79
Discharge Air Sensor Checkout (Honeywell 6RT1)
80
Voltage Imbalance
82
Electrical Phasing
82
System Start-Up
83
Sequence of Operation
83
Low Ambient Damper Adjustment (Factory or Field Installed)
87
EVP Chiller Applications
88
Air Over" Evaporator Application
89
System Airflow Measurement
89
Compressor Start-Up (All Systems)
90
Final System Setup
102
Service & Maintenance
104
Compressor Operational Sounds
104
Scroll Compressor Replacement
104
Fuse Replacement Data
106
Monthly Maintenance
106
Coil Cleaning
107
Warranty and Liability Clause
109
Index
110
4
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Trane RAUC-C20 Specifications
General
Brand
Trane
Model
RAUC-C20
Category
Air Conditioner
Language
English
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