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Installation, Operation, and Maintenance
Commercial Self-Contained Units
SWUD
R-454B – 20 to 110 Tons
SWUD – 20 to 110 Tons
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment
can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
March 2025
SAFETY WARNING
PKG-SVX029B-EN
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Summary of Contents for Trane SWUD Series
- Page 1 Installation, Operation, and Maintenance Commercial Self-Contained Units SWUD R-454B – 20 to 110 Tons SWUD – 20 to 110 Tons SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
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Page 2: Warnings, Cautions, And Notices
(HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants. -
Page 3: Revision History
Follow EHS Policies! This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in Failure to follow instructions below could result in part without written permission. Trane reserves the right to death or serious injury. -
Page 4: Table Of Contents
Table of Contents Overview........7 Installation –... - Page 5 Table of Contents Occupied/Unoccupied Switching ..34 Airside Economizer Interface with OA Occupied Status Definition ... . . 34 Reference ......38 Power-Up Start Delay .
- Page 6 Table of Contents TD-7 Home Screen....46 Start-Up Log ......52 TD-7 Reports .
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Page 7: Overview
Overview Note: One copy of this document ships inside the control Figure 1. SWUD components panel of each unit and is customer property. It must be retained by the unit maintenance personnel. This manual describes proper installation, operation, and maintenance procedures for water cooled systems. By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component damage will be minimized. -
Page 8: Unit Nameplate
Overview Unit Nameplate installation. For more detailed unit control options, see the Owners section of this manual. The unit nameplate identifies the unit model number. It is located on the door of the starter panel. PKG-SVX029B-EN... -
Page 9: Model Number Description
Model Number Description Digit 1, 2, 3, 4 — Unit Model Digit 16 — Economizer Digit 28 — Air Volume/Temp Control SWUD = Self-Contained Water-Cooled Unitary 0 = No Economizer A = VAV Control Scheme (Fixed DA Temp) Device W = With Water Side Economizer B = VAV Control Scheme (Return Air Reset) H = 2-Position Damper Ventilation Interface C = VAV Control Scheme (Space Temp Reset) -
Page 10: General Data
No. of fans Note: All performance data is provided in the Performance Selection Program. Contact Trane Sales at 770-988-8338 for more information. All performance data is provided in the Performance Selection Program. Contact MJC Sales at 770-988-8338 for more information. - Page 11 General Data Table 2. EER/IEER ratings AHRI Net Cooling Capacity Tonnage Model Number IEER (MBH) SWUD5020 18.7 21.3 SWUD5025 16.7 19.9 SWUD5030 17.9 22.6 SWUD5035 18.2 22.0 SWUD5040 18.2 21.9 SWUD5045 17.9 22.1 SWUD5050 18.8 22.8 SWUD5055 18.3 22.1 SWUD5060 18.2 21.7 SWUD5065...
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Page 12: Pre-Installation
Verify the nameplate data matches the sales order and damage by the carrier and consignee. bill of lading. Note: Notify your Trane representative of the damage • Verify the unit is properly equipped and there are no and arrange for repair. Have the carrier inspect material shortages. -
Page 13: Repair
Pre-Installation Repair Unpacking Notify the appropriate sales representative before SWUD units ship fully assembled in a single piece. Some arranging unit installation or repair. accessories are shipped inside an additional box. Important: Do not repair unit until the damage has been inspected by the carrier’s representative. -
Page 14: Dimensional Data
Dimensional Data Figure 2. Unit dimensions (in inches) Depth The Top view drawing is a general representation. The number of fans varies according to capacity. Discharge Opening C See the general data table for fan quantity. Discharge Opening D Width Depth Width Airflow... - Page 15 Dimensional Data Table 3. Unit dimensions (in inches) Unit Size 20, 25, 30, and 35T 40, 45, 50, 55, and 60T 65, 70, 75, and 85T 90, 100, and 110T Dimension Width (in.) 70.00 95.00 111.00 140.00 Depth (in.) 65.00 80.00 80.00 80.00...
- Page 16 Dimensional Data Figure 4. Standard plenum (option) Note: Custom height plenums available upon request. Table 4. Standard plenum (option) Dim A (in.) Dim B (in.) Height (in.) Unit Size 20, 25, 30, and 35T 42.92 28.55 30.00 40, 45, 50, 55, and 60T 67.77 43.40 30.00...
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Page 17: Service Clearances
Dimensional Data Service Clearances Figure 5. Service clearance Back - Air Inlet 18" Left Side Right Side 42" 24" 1) Low Voltage (Control Panel) 2) High Voltage Front Starter Control 42" Electrical conduit penetrations (recommended) Table 5. Service/code clearance requirements Distance - in. -
Page 18: Weights
Weights Table 6. Unit weights Base Weight Waterside Economizer Unit Size (lbs) (lbs) 2763 2813 2915 2965 3423 3489 3654 3734 3904 4231 4240 4367 4466 5137 1055 5237 1055 5336 1055 PKG-SVX029B-EN... -
Page 19: A2L Information
At all times, Trane’s maintenance and service guidelines • Do not puncture refrigerant tubing. shall be followed. If in doubt, contact Trane technical • Dispose of properly in accordance with federal support for assistance. or local regulations. -
Page 20: Leak Detection
• Verify continuity of earth bonding. flame to open circuit. • Replace electrical components with Trane replacement 6. Open the circuit. parts, or those meeting the same ratings and qualified Prior to refrigerant removal, open all appropriate valves, for flame arrest protection, UL LZGH2 category. -
Page 21: Refrigerant Charging
A2L Information The outlet for the vacuum pump shall not be close to any 4. Pump down refrigerant system, if possible. potential ignition sources, and ventilation shall be available. 5. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the Refrigerant Charging system. -
Page 22: Ignition Sources In Ductwork
A2L Information Ignition Sources in Ductwork Table 7. Minimum room area (continued) Do not install open flames in the ductwork. Hot surfaces Minimum Room Area exceeding 700°C (1290°F) should not be installed in the ductwork unless the average airflow velocity is not less than 1.0 m\s (200 ft\min) across the heater and proof of airflow is verified before system is energized. -
Page 23: Leak Detection System
A2L Information Table 8. Altitude adjustment factor Sea Level 2001 to 4001 to 6001 to 8001 to 10001 to 12001 to 14001 to Altitude (ft) Over 15000 to 2000 4000 6000 8000 10000 12000 14000 15000 1.05 1.11 1.17 1.24 1.32 1.41 1.51... -
Page 24: A2L Mitigation Airflow
A2L Information A2L Mitigation Airflow Table 9. A2L mitigation airflow (continued) Table 9. A2L mitigation airflow Unit Tonnage Total Refrigerant Min Airflow (m3h) Charge (kg) Unit Tonnage Total Refrigerant Min Airflow (m3h) Charge (kg) 27.2 2693 29.48 2919 9.08 31.76 3145 11.34 1123... -
Page 25: Installation - Mechanical
Installation – Mechanical Unit Handling Figure 6. Detail of how to run straps through fork pockets to connect spreader bar on self-contained WARNING Spreader bar Improper Unit Lift! Failure to properly lift unit in a LEVEL position could result in unit dropping and possibly crushing operator/technician which could result in death or serious injury, and equipment or property-only Straps... -
Page 26: Installation Preparation
Make duct connections to the unit with a flexible material Important: Vibration isolation is not necessary for the unit such as heavy canvas. If a fire hazard exists, Trane since the factory internally isolates the fan and recommends using Flexweave 1000, type FW30 or compressor, thus creating double isolation. -
Page 27: Water Piping
Use the services of a qualified water treatment specialist to determine what water treatment, if any, is required. Trane assumes no responsibility for Condensate Drain Connections equipment failures which result from untreated or improperly treated water, or saline or brackish water. -
Page 28: General Waterside Recommendations
Note: Unit does not have floor drains. Refrigerant System Figure 11. Condenser water piping components for Trane Water Cooled Commercial Self-Contained units ship cooling tower system factory charged with R-454B refrigerant. PKG-SVX029B-EN... -
Page 29: Installation - Electrical
Installation - Electrical Unit Wiring Diagrams Voltage Range Voltages must be within ±10% the nameplate voltage. Specific unit wiring diagrams are provided on the inside of Confirm the unit voltage is balanced by measuring at the the control panel door. Use these diagrams for connections compressor terminals. -
Page 30: Selection Procedures
Installation - Electrical Selection Procedures Determine Max Fuse (MFS) and Max Circuit Breaker (MCB) Sizes • RLA = Rated Load Amps MFS and MCB = 2.25 x largest motor amps (FLA or RLA) + • Compressor LRA = Locked Rotor Amps the sum of the remaining motor amps. -
Page 31: Static Pressure Transducer Installation
Installation - Electrical Table 11. Electrical service sizing data — motors (continued) Digit 9 - Unit Digit 9 Tonnage Comp 1 Comp 2 Comp 3 Comp 4 Qty Fans Fan FLA Misc Voltage 208-230/60/3 83.1 83.1 62.1 62.1 13.5 6.00 2.00 208-230/60/3 83.1... -
Page 32: Zone Sensor Option Used For Discharge Air Reset By Space Temperature
For variable frequency drives Wiring or other energy storing components provided by Trane or others, refer to the appropriate 1. Run wires between the unit control panel and the zone manufacturer’s literature for allowable waiting periods sensor subbase. To determine the number of wires for discharge of capacitors. -
Page 33: Standard Remote Sensor (Baysens077)
Installation - Electrical convention of connecting zone sensor terminals to like Table 12. Zone sensor maximum lengths and wire size numbered unit terminals (1 to 1, 2 to 2).The connection detail is shown on the unit wiring diagrams located in Distance from Unit to Recommended Wiring Size the unit control panel. -
Page 34: Control Sequences Of Operation
Control Sequences of Operation General Support Sequences Normal Unit Starting When Front Panel Auto Stop, Stop modes, overrides, and Occupied/Unoccupied Switching diagnostic shutdowns are removed, the controller will start unit operation. The supply fan starts and increases to the There are many sources and types of occupancy. These have an effect on the operation of the unit. -
Page 35: Harmonic Offset
Control Sequences of Operation Discharge Air Reset Return Air then maintain the fan speed at the fan speed setpoint. The fans are commanded off during the unoccupied mode. Temperature (VAV Units Only) Harmonic Offset When the unit is ordered with the Return Air Reset option the unit will calculate the discharge air setpoint based on The fan wall at certain frequencies may produce a the return air temperature compared against the return air... -
Page 36: Compressor Control Support
Control Sequences of Operation Compressor Control Support Compressor Pressure Sensors Sequences Each compressor has its own set of suction and discharge pressure sensors. The sensors are powered by the 5 Vdc NOTICE power supply 2U1. Their range is 0-600 psig and their voltage output is linearly proportional to the sensed Compressor Damage! pressure. -
Page 37: Compressor Safety Circuit
Control Sequences of Operation latching fault can be cleared by cycling 24 Vac module The VS drive, 1U1, has its own software to control and power. protect the VS compressor. The drive receives the following signals from the Unit Compressor Safety Circuit Controller: Each fixed speed compressor has a Compressor Safety •... -
Page 38: Compressor Staging
Control Sequences of Operation Airside Components Support • Water regulating valve (WRV) malfunction Sequences • Faulty discharge pressure sensor The Unit Controller's TD7 will annunciate a Limit Condition Two-Position Damper Interface if an FS compressor circuit enters one. If the unit is equipped with WRV, the Unit Controller can open the valve Units with two-position damper ventilation interface are to allow more flow through the condenser to help mitigate... -
Page 39: Waterside Components Support
Trane assumes no responsibility for equipment failures which result from untreated or Water Purge improperly treated water, or saline or brackish water. -
Page 40: Unit Protection Support Sequences
Control Sequences of Operation Unit Protection Support Refrigerant (R-454B) Detection Sequences and Mitigation Support Sequences Emergency Stop Input Equipment with R-454B refrigerant requires a refrigerant A normally closed (N.C.) switch wired to the customer detection system based on the refrigerant charge. When connection (2TB3) may be used during emergency the refrigerant detection system is in a normal state, the situations to shut down all unit operations. -
Page 41: Heat Cool Mode Status: Heat
Control Sequences of Operation Heat Cool Mode Status: Heat stop condition in order for the override to put the unit into the test mode. When the unit is in Heat mode and a leak is detected or sensor fails (see the figure below), the same diagnostics Unit Functional Test Mode will trigger. -
Page 42: Cooling Testing Steps
Control Sequences of Operation 22. Cooling Test Start. 14. Elect SCR 50% 23. Heating Test Start. 15. Elect SCR 75% 24. Economizer Test Start 16. Elect SCR 100% 25. Test Disable/Auto Release. 17. Steam 25% Open 18. Steam 50% Open Cooling Testing Steps 19. -
Page 43: Controls
Controls Unit Controller • XM90.1 • XM30.2 The SWUD uses the Symbio™ 500 control platform for monitoring and control. XM expansion modules are used to • XM30.3 expand the Symbio 500 I/O capabilities. • XM30.4 In the control panel, the following modules are used: Note: The number after the dot in the name (example: •... - Page 44 Open = Off, Closed = On Supply Fan Start Stop Command 2 Open = Off, Closed = On Discharge Air Temperature 10k Ohm Resistor Trane Type 2 Return Air Temperature Local 10k Ohm Resistor Trane Type 2 Symbio 500 (Requires 50VA...
- Page 45 — — AO4/UI4 — — Outdoor Air Temperature Local 10k Ohm Resistor Trane Type 2 (only on units with economizer interfaces) AO1/UI1 Outdoor Air Relative Humidity Local 4 ma = 0, 20 ma = 100% AO2/UI2 XM30.4 Return Air Humidity Local...
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Page 46: Navigating The Td-7
Controls Navigating the TD-7 TD-7 Home Screen To access the TD-7 home screen, press the Home button in the upper left of the screen. Screen Description Element Home button Displays the local Auto Stop button and displays the occupancy, Heat/Cool Mode, and Unit Information. Displays information about the Air Filter. -
Page 47: Setpoint Adjustments
Controls Setpoint Adjustments Figure 19. Local Auto/Stop This section details control setpoints that can be modified from factory defaults and how to modify those setpoints. Unit Setpoints Figure 20. Stop or release override Table 14. Unit setpoints that can be modified in the TD-7 Setpoint Name Description Factory Default... -
Page 48: Unit Setup
Controls Table 14. Unit setpoints that can be modified in the TD-7 (continued) Setpoint Name Description Factory Default Sets the return setpoint when the unit is selected to do discharge air reset based off the Return Temperature Setpoint BAS return temperature. This value is used to determine the occupied heating and cooling 72°F (DAT Reset by Return Temp Air Units Only) temperatures which reset the discharge air temperature setpoint. -
Page 49: General Alarms
Use the services of a qualified water treatment Release Override button in the top left. specialist to determine what water treatment, if any, is required. Trane assumes no responsibility for General Alarms equipment failures which result from untreated or improperly treated water, or saline or brackish water. -
Page 50: Pre-Startup
Pre-Startup Water-Cooled Unit Piping Before starting up units, perform the following procedure to confirm proper unit operation. Verify condensate drain, water piping drain plugs, economizer header, strainer pressure transducers, and Pre-Startup Checklist condenser vent plug are installed. Complete this checklist after installing unit to verify all Units with Hydronic Heat recommended installation procedures are complete before start-up. -
Page 51: Start-Up
Start-Up WARNING NOTICE Live Electrical Components! Compressor Damage! Failure to follow all electrical safety precautions when Failure to follow instructions below could result in exposed to live electrical components could result in compressor failure and/or reduced compressor life. death or serious injury. To prevent compressor liquid slugging, only add liquid in the suction line when the compressor is When it is necessary to work with live electrical... -
Page 52: Instructions
Start-Up Operating and Programming Instructions each unit. For units with VFD option, see installer guide that ships with each VFD. See IntelliPak™ Commercial Self-Contained Signature Series 20 to 110 Ton, Modular Series 20 to 35 Ton Start-Up Log Programming Guide (PKG-SVP01*-EN) for available unit operating setpoints and instructions. -
Page 53: Maintenance
For variable frequency drives allows for panel to be removed. or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods Air Filters for discharge of capacitors. Verify with a CAT III or IV... -
Page 54: Compressors
For specific handling gases may be flammable and/or explosive. If a leak in concerns with R-410A, please contact your local such spaces is detected, evacuate the area Trane representative. immediately and contact the proper rescue or response authority. WARNING... -
Page 55: Brazing Procedures
Maintenance System Repair any burrs. 1. If system is water cooled with service valves, high and 3. Confirm the inner and outer tubes of the joint are low side may be tested independently by closing liquid symmetrical and have a close clearance, providing an line angle valve and water cooled unit discharge line easy slip fit. - Page 56 Maintenance Standing Vacuum Test evaporation, causing pressure rise during standing vacuum test. This makes it impossible to determine if Once 300 microns or less is obtained, close valve A and system has a leak, excessive residual moisture, or leave valves B and C open to allow the vacuum gauge to continual or high rate of pressure increase due to read the actual system pressure.
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Page 57: Compressors
Maintenance Figure 23. Evacuation time vs. pressure rise 1600 Continously increasing pressure indicates the presence of leaks, 1400 moisture, or both. 1200 State of equilibrium indicates the 1000 true amount of moisture left in the system. It indicates that no leaks, but requires further evacuation. - Page 58 Maintenance • Remove large debris from the coils and straighten fins rake. before cleaning. Remove filters before cleaning. 9. Replace all panels and parts and restore electrical • Clean refrigerant coils with cold water and detergent, or power to the unit. with one of the commercially available chemical coil 10.
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Page 59: Piping Components
Failure to follow instruction below could result in Hazardous Voltage w/Capacitors! equipment damage. Failure to disconnect power and discharge capacitors Drain and vent coils when not in use. Trane before servicing could result in death or serious recommends glycol protection in all possible freezing injury. -
Page 60: Maintenance Periodic Checklists
Maintenance Maintenance Periodic Checklists 8. Check and record operating pressures. WARNING Semi-Annual Maintenance Hazardous Service Procedures! WARNING Failure to follow all precautions in this manual and on Rotating Components! the tags, stickers, and labels could result in death or Failure to disconnect power before servicing could serious injury. - Page 61 Maintenance When checking operating pressures and conditions, • Entering water temperature greater than 65°F. establish the following nominal conditions for consistent • Compressors running at full load. measurements. • Drain the condensing water system and inspect it • Leaving air temperature greater than 60°F. thoroughly for fouling;...
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Page 62: Diagnostics
Diagnostics Troubleshooting charge, malfunctioning of expansion valves, damaged compressors, etc. will result in pressure variations which System Checks are outside the normal range. Note: If phasing at the main incoming power terminal is WARNING incorrect, switch two of the three incoming power Live Electrical Components! leads. - Page 63 Notes PKG-SVX029B-EN...
- Page 64 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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