Trane Technologies RTAG 225 Owner's manual

RTAG-SVX001H-EN
Models: RTAG
225-500 ton units (60Hz)
Feb. 2022
572598690001
SAFETY WARNING
Installation, Operation and Maintenance
RTAG Air-Cooled Helical
Rotary Liquid Chillers
Confidential and proprietary Trane information

RTAG-SVX001H-EN 1
Note that warnings,
cautions and notices appear at appropriate intervals
throughout this manual. Warnings are provide to alert
installing contractors to potential hazards that could re-
sult in death or personal injury. Cautions are designed to
alert personnel to hazardous situations that could result
in personal injury, while notices indicate a situation that
could result in equipment or property-damage-only acci-
dents.
Your personal safety and the proper operation of this
machine depend upon the strict observance of these pre-
cautions.
Read this manual thoroughly before operating or servic-
ing this unit.
ATTENTION: Warnings, Cautions and Notices appear
at appropriate sections throughout this literature. Read
these carefully:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury.
It could also be used to alert against
unsafe practices.
Indicates a situation that could result
in equipment or property-damage
only
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturallyoccurring strato-
spheric ozone layer when released to the atmosphere.
In particular, several of the identified chemicals that may
affect the ozone layer are refrigerants that contain Chlo-
rine, Fluorine and Carbon (CFCs) and those containing
Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not
all refrigerants containing these compounds have the
same potential impact to the environment. Trane advo-
cates the responsible handling of all refrigerants-includ-
ing industry replacements for CFCs such as HCFCs and
HFCs.
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the
air conditioning industry. All technicians who handle
refrigerants must be certified. The Federal Clean Air Act
(Section 608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain refriger-
ants and the equipment that is used in these service pro-
cedures. In addition, some states or municipalities may
have additional requirements that must also be adhered
to for responsible managementof refrigerants. Know the
applicable laws and follow them.
WARNING
-
WARNING
-
-
WARNING

2 RTAG-SVX001H-EN
-
-
1. RTAG-SVX001H-EN (March 2022 )
New manual.
Unchanging refrigerant before welding, filled with nitro-
gen for protection, and use cooling method to protect-
ing the electron component. TRANE is not responsible
for the equipment damage due to improper welding.

RTAG-SVX001H-EN
1
7
CHHP Compressor Model Number ............. 9
CHHW Compressor Model Number ............ 9
10
Preface............................................................ 10
Warranty ........................................................ 10
Unit Description............................................. 10
Inspection Checklist ...................................... 10
Storage........................................................... 10
Unit Identification - Nameplates .................. 11
Unit Nameplate.............................................11
Figure 1. Unit Nameplate .............................. 11
Compressor nameplate................................11
General Data .................................................. 12
Table 1. General data — 225 - 460 Ton 380
Volt -60Hz Premium efficiency (variable
speed compressor) 12
Table 2. General data — 225 - 460 Ton 460
Volt -60Hz Premium efficiency (variable
speed compressor)
Table 3.
13
General data — 400 - 500 Ton 380
Volt -60Hz Premium efficiency (variable
speed compressor) .......................................... 14
Table 4. General data — 400 - 550 Ton 400
Volt -60Hz Premium efficiency (variable
speed compressor)
15
Table 5. General data — 400 - 550 Ton 460
Volt -60Hz Premium efficiency (variable
speed compressor)
16
17
Figure 2. Dimension - RTAG 190/205/225 Ex-
tra/ Premium efficiency unit ........................... 17
Figure 3. Dimension - RTAG 225 Extra effi-
ciency unit ....................................................... 18
Figure 4. Dimension - RTAG 255/285 High/
Premium efficiency unit ................................. 19
..........................................
Attention Items .............................................. 23
Figure 8. Installation clearance ..................... 24
Storage Requirement ................................... 24
Clearances...................................................... 24
Figure 9. Installation clearance ..................... 25
Drainage......................................................... 25
Unit Lifting ..................................................... 25
Figure 10. Unit lifting schematic (4 points) .... 26
Figure 11. Unit lifting schematic (6 points) ... 26
Figure 12. Unit lifting schematic (8 points) ... 26
Table 7. Lifting Weights and CG Dimensions.
......................................................... 27
Isolator Installation........................................ 28
Figure 13. Isolator location.............................. 29
Figure 14. Rubber isolator dimension ............ 30
Table 8. Unit lsolators..................................... 30
Table 9. Unit lsolators Part Extension Num-
ber ......................................................... 31
Evaporator Water Piping .............................. 32
Figure 15. Water side heat exchanger typical
piping connection schematic ......................... 32
Entering Chilled Water Piping......................33
Leaving Chilled Water Piping.......................33
System Minimum Water Volume ................33
Water Flow Switch........................................33
Figure 16. Water flow switch installation sche-
matic ......................................................... 33
Table 10. Target slice length.......................... 34
Figure 23. Water flow- pressure drop curve .. 34
Water Treatment...........................................36
Table 11. Water quality requirements........... 36
Freeze Protection ..........................................35
36
General Recommendations...........................36
Table 12. General data — 400 - 500 Ton 380
Volt -60Hz Premium efficiency (variable
speed compressor)
.......................................... 36
Table 13. Electrical data – High Efficiency at
all ambient operation ...................................... 37
Installer-Supplied Components ................... 38
..........................................
..........................................
..........................................
Figure 5. Dimension - RTAG 255 Extra effici-
ency unit, 310/340 High/ Premium efficiency
unit .................................................................... 20
Figure 6. Dimension - RTAG 375/400 High/
Premium efficiency unit ................................. 21
Figure 7. Dimension - RTAG 375/400 Extra
efficiency unit, 440 High/ Premium efficiency
unit
.................................................................... 22
23
Installation Responsibilities.......................... 23
Table 6. Installation Responsibilities........... 23
3

4 RTAG-SVX001H-EN
Power Supply Wiring .................................... 38
Figure 18. Power Entrance of fixed panel ...... 39
Figure 19. Power Entrance of AFD panel ....... 39
Control Power Supply................................... 40
Interconnecting Wiring ................................. 40
Heater Power Supply....................................40
Chilled Water Flow (Pump) Interlock...........40
Chilled Water Pump Control ........................40
Table 14. Pump Relay Operation................... 40
Alarm and Status Relay Outputs (Program-
mable Relays)................................................40
Table 15. Alarm and Status Relay Output Con-
figuration Table................................................ 41
Relay Assignments Using Tracer TU ..........41
Table 16. Default Assignments...................... 41
Low Voltage Wiring ......................................41
Emergency Stop ............................................ 41
External Auto/Stop ........................................ 41
External Chilled Water Setpoint (ECWS) Op-
tion .................................................................42
External Current Limit Setpoint (ECLS) Op-
tion .................................................................42
Figure 20. Wiring Examples for ECLS and
ECWS ......................................................... 42
Chilled Water Reset (CWR) ........................... 43
Communications Interface Options ............. 44
Optional Tracer Communications Interface44
Table 17. Wire Size ......................................... 44
LonTalk Communications Interface for
Chillers (LCI-C)...............................................44
Installation Recommendations .................... 44
Table 18. LonTalk Points List ......................... 45
BACnet Communications Interface for
Chillers (BCI-C) ..............................................45
BACnet Data Points and Configuration Prop-
erty Definitions ..............................................45
BACnet Protocol Implementation Confor-
mance Statement (PICS) ..............................55
Object Types .................................................. 47
Table 19. Descriptions and configurations ... 47
BACnet Protocol............................................50
Object Data Points and Diagnostic Data
Points with Corresponding Chiller Models.50
Table 20. Analog Output ................................ 50
Table 21. Analog Input ................................... 51
Table 22. Multistate Output ........................... 51
Table 23. Multistate Input .............................. 52
Table 24. Binary Output ................................. 53
Table 25. Binary Input .................................... 53
54
Overview ........................................................54
UC800 Specifications....................................54
Figure 21. Wiring locations and connection
ports ......................................................... 54
Communication Interfaces...........................55
Rotary Switches............................................55
LED Description and Operation...................55
Figure 22. LED locations .................................. 55
Table 26. LED behavior .................................. 55
Tracer AdaptiView TD7 Display ...................55
Operator Interface.........................................55
Figure 23. TD7 screens .................................... 56
Home Screen.................................................56
Figure 24. Home screen................................... 56
Table 27. Home screen items ........................ 56
Viewing Operating Modes ...........................56
Figure 25. Chiller operating modes ................ 56
Table 28. Operating modes — chiller............ 57
Table 28. Operating modes — circuit............ 58
Table 30. Operating modes — compressor.. 59
Alarms............................................................60
Viewing the Alarms Screen..........................60
Figure 26. Alarm screen................................... 60
Reports...........................................................60
Viewing the Reports Screen.........................60
Figure 27. Report screen.................................. 60
Editing a Custom Report..............................60
Figure 28. Edit custom report screen ............. 61
Figure 29. Report evaporator screen .............. 61
Table 31. Report evaporator screen items.... 61
Figure 30. Report condenser screen............... 61
Table 32. Report condenser screen items .... 61
Figure 21. Report compressor screen ............ 61
Table 33. Report compressor screen items.. 62
Figure 32. Report motor screen ..................... 62
Table 34. Report motor screen items............ 62
Equipment Settings .......................................62
Contents

RTAG-SVX001H-EN 5
Viewing the Settings Screen........................ 62
Figure 33. Setting screen................................. 62
Viewing and Changing Equipment Settings
........................................................................ 62
Figure 34. Equipment setting screen (Chiller
setting shown)................................................. 63
Figure 35. Chilled water reset type screen..... 63
Figure 36. Changed chilled water setpoint
screen ......................................................... 63
Keypad Features........................................... 63
Table 35. Settings screen items..................... 64
Service Settings............................................ 64
Figure 37. Warning message.......................... 64
Figure 38. Service settings screen.................. 64
Display Settings............................................ 64
Viewing and Changing Display Preferences...
........................................................................ 65
Figure 39. Display preference screen............. 65
Figure 40. Date format page............................ 65
Figure 41. Language page............................... 65
Figure 42. Date and time screen..................... 66
Cleaning the Display..................................... 66
Figure 43. Countdown screen......................... 66
Security Settings........................................... 66
Disabling/Enabling Security......................... 66
Figure 44. Security screen - disable................ 67
Figure 45. Security settings screen................. 67
Logging In...................................................... 67
Figure 46. Log in screen.................................. 67
Logging Out................................................... 67
Figure 47. Log out confirmation screen......... 67
Tracer TU ....................................................... 68
Figure 48. Tracer TU........................................ 68
Sequence of Operation ................................. 68
Software Operation Overview..................... 68
Figure 49. Software operation overview........ 69
Timelines....................................................... 70
Power Up Diagram....................................... 70
Figure 50. Sequence of operation: power up
diagram ......................................................... 70
Power Up to Starting.................................... 71
Figure 51. Sequence of events: power up to
starting ......................................................... 71
Stopped to Starting...................................... 72
Figure 52. Sequence of events: stopped to
starting ......................................................... 72
Running (Lead Compressor/Circuit Start and
Run)................................................................ 73
Figure 53. Sequence of operation: running (lead
compressor/circuit start and run)................... 73
Running (Lag Compressor/Circuit Start and
Run)................................................................ 74
Figure 54. Sequence of operation: running (lag
compressor/circuit start and run)................... 74
Satisfied Setpoint.......................................... 75
Figure 55. Sequence of events: satisfied set-
point ......................................................... 75
Unloading Unstaging ................................... 76
Figure 56. Sequence of events: Unloading un-
staging ......................................................... 76
Normal Shutdown to Stopped or Run Inhibit
........................................................................ 77
Figure 57. Sequence of events: normal shut-
down to stopped or run inhibit....................... 77
Immediate Shutdown to Stopped or Run
Inhibit............................................................. 78
Figure 58. Sequence of events: immediate
shutdown to stopped or run inhibit............... 78
Diagnostics .................................................... 79
Diagnostic Name (Text) and Source: .......... 79
AFD Diagnostics............................................ 80
Table 40. AFD diagnostics.............................. 80
Starter Diagnostics ....................................... 80
Table 41. Starter diagnostics......................... 80
Main Processor Diagnostics......................... 82
Table 42. Main processor diagnostics .......... 82
Communication Diagnostics...................... 90
Table 43. Communications diagnostics...... 91
95
Refrigerant Circuit .......................................95
Figure 65. System Schematic ........................ 95
Refrigerant Cycle .........................................95
Figure 66. Pressure Enthalpy (P-h) diagram of
RTAG ....................................................... 95
Figure 67. Pressure Enthalpy (P-h) diagram of
RTAG with Economizer ................................. 96
R134a Refrigerant ........................................96
Compressor .................................................96
Figure 68. Compressor inner configuration . 97
Contents

6 RTAG-SVX001H-EN
Figure 69. Compressor with Auxiliary Inlet Port
....................................................... 97
Condenser and Fan ..................................... 97
Evaporator ................................................... 97
Expansion Valve .......................................... 98
Oil Separator ................................................ 98
Oil system .................................................... 98
99
Installation Checklist ................................... 99
Check Procedure .......................................... 99
Figure 70. Ball Valve Open/Close status....... 99
Unit Voltage Power Supply ........................100
Unit Voltage Imbalance ..............................100
Unit Voltage Phasing ..................................100
Water System Flow Rates ...........................101
Water System Pressure Drop .....................101
102
Start Up ........................................................102
Table 44. Unit Running Status..................... 102
Seasonal Unit Startup Procedure ..............102
System Restart after Extended Shutdown 102
Temporary Shutdown and Restart ............103
Extended Shutdown Procedure .................103
Seasonal Unit Startup Procedure ..............103
104
Weekly Maintenance ..................................104
Monthly Maintenance .................................104
Annual Maintenance ...................................104
Table 45. RTAG Start-up Test Log............... 105
Table 46. RTAG Unit Configuration............. 106
Table 47. RTAG Chiller Log.......................... 106
109
Refrigerant and Oil Charge Management . 109
R134a Field Charging Procedure ................109
Vacuum Procedure ..................................... 109
Factory (initial) Refrigerant Charging Proce-
dure .............................................................109
Adding charge............................................. 110
Refrigerant recovery................................... 110
Refrigerant Filter Replacement Procedure.110
Compressor Oil............................................ 111
Oil Separator Oil Level Check ....................111
Figure 71. Oil Level Measure of Oil Separator...
....................................................... 111
Compressor Oil Charging...........................111
Figure 72. Oil Charge of Compressor ........... 112
Draining Compressor oil ...........................112
Oil Loss Troubleshooting ..........................112
Figure 73. Oil Filter Replacement ................. 112
Evaporator Oil Return Pipe Filter Replace-
ment.............................................................113
Coil cleaning ................................................ 113
Water-side Heat Exchanger Maintenance . 113
Chemical Cleaning of Water-side Heat Ex-
changer........................................................113
Figure 74. Chemical Cleaning ....................... 114
Mechanical Cleaning of Water-side Heat Ex-
changer........................................................114
Tubes Replacement of Water-side Heat Ex-
changer........................................................114
Compressor Replacement .......................... 114
Fan Replacement ........................................ 115
Coil Assembly or Single Coil Replacement ...
......................................................................115
Water side heat exchanger replacement ..116
Contents
CA300 series Drive Overview ..................... 118
Nameplate and model description ............118
Description of Parts ....................................119
Figure 75. AC drive components (160 kW)... 119
Figure 76. AC drive components (200 kW)... 119
Technical Specifications .............................120
Table 48. Product models and electrical pa-
rameters ....................................................... 120
Table 49. Technical specifications ............... 120
Outline Dimensions ....................................122
Figure 77. Outline dimensions (160 kW) ...... 122
Figure 78. Outline dimensions (200 kW) ...... 122
Wiring ..........................................................123
Figure 79. Standard electrical wiring............ 123
Panel Operation ..........................................125
Figure 80. Details of the operating panel ..... 125
Table 50. Indicators on the operating panel126
118
Drive ..............................................................

Troubleshooting..........................................127
Symptoms and Diagnostics .......................131
Maintenance................................................132
Function code..............................................133
Contents
RTAG-SVX001H-EN 7

An example of a typical unit model number is:
RTAG 190 A 0 0 S N X F N 2 S T X X X X 0 X F R V 0 1 N N I X N
1~4 5~7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Model number digits are selected and assigned in accordance with the following definitions using the model number
example shown above.
RTAG -Air cooled Screw Chiller
=
=
=
=
=
=
=
=
=
=
E
F
G
= 380V/60Hz/3Ph
460V/60Hz/3Ph
400V/60Hz/3Ph
=
=
C = Taicang, China
A0 = Factory Assigned
H = High Efficiency
0 = No Safety Agency Listing
A = ASME Pressure Vessel Code
S = Standard
X = Medium low noise ( compressor or tube
sound attenuation )
L = Low noise(compressor +tube sound wrap)
M = Low noise + night noise set back
N = Standard Ambient 14ºF~114.8ºF(-10ºC~46ºC)
H = High Ambient 14ºF~125ºF(-10ºC~52ºC)
S = Single Relief Valve
D = Dual Relief Valve With 3 Way Valve
X = No Flow Switch
F = Field Installed Flow Switch
F = Flange
N = Standard Cooling(4ºC~20ºC)
L = 150psi
2 = 2 Pass Evaporator
1 = 1 Pass Evaporator
S = Standard Thermal Insulation
B = Copper tube/Al Fin Coil, with Black Coated
C = Copper tube/Copper Fin Coil
X = No Heat Recovery
X = Pump Signal On/Off
X = None
E = English
X = None
B = BACnet Interface
M = Modbus Interface
L = Lontalk Interface
8 RTAG-SVX001H-EN
225 Nominal Tons
230 Nominal Tons
285 Nominal Tons
310 Nominal Tons
340 Nominal Tons
375 Nominal Tons
400 Nominal Tons
440 Nominal Tons
460 Nominal Tons
500 Nominal Tons
225
230
285
310
340
375
400
440
460
500
Digit 8 - Unit Power Supply
Digit 12 - Efficiency
P = Premium Seasonal Efficiency

0 = Without
X = None
S = Rapid restart-NoUPS
A = External Set Points & Capacity Outputs
B = Rpd rst-NoUPS, Ext.Set Pts & Cap.Output
F = Full Charge (R134a)
N = Nitrogen (R134a)
P = 12kg Charge (R134a)
R = Standard Functional Test
P = Non-witnessed Performance Test, With Report
W = Customer-witnessed Performance Test, With
Report
Unit Model Number
V = VFD
Y = Wye-delta closed transition
0 = None
T = Terminal Block Connection
D = Mech Disconnect Switch
C = Circuit Breaker
1 = Single Point Power Connection
2 = Dual Point Power Connection
A = Alarm Relay Outputs
N = No Appearance Options
X = None
I = Neoprene Isolators
X = None
N = None glycol charge in factory
Model number discretion here only list RTAG standard
units available option. There will be more option in fu-
ture.
Main options implementation scheme:
Medium low noise option of Sound Treatment use
sound wrap depends compressor configuration: N5, N6
use tube sound wrap, N6E2 use compressor sound box.
this option is only for unit nominal tonnage >225.
Low noise option of Sound Treatment use sound wrap
to reduce the compressor, suction and discharge line,
oil separator noise; low noise with night noise setback
is implement with both sound wrap and variable speed
fan, adjust fan speed.
For Unit Application, High Ambient option is added
oil cooler base on Standard ambient configuration But
units with VFD or economizer always have oil cooler.
Alarm relay outputs can be connected to the sound &
light alarm warning elements. It is highly recommended
that users install the corresponding alarm elements with
this function, so that when the unit encounters a fault,
they can get the information in time and go to the trou-
bleshooting.
RTAG-SVX001H-EN 9