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Installer's Manual
Split System (R-410A)
High Wall Type Air Handlers for
Multi-Zone Inverter Systems
This Installation Guide is for use only when applying the 4MXW23 indoor unit with a
4TXM model multi-zone outdoor unit. If installing with a single zone mini split outdoor
unit, consult the installation manual shipped with the outdoor unit.
June 2020
23 Series Models:
HP Indoor Units:
4MXW2309A1
4MXW2312A1
4MXW2318A1
4MXW2324A1
MS-SVN079B-EN
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Related Manuals for Trane Technologies 23 Series
Summary of Contents for Trane Technologies 23 Series
- Page 1 Installer’s Manual Split System (R-410A) High Wall Type Air Handlers for Multi-Zone Inverter Systems 23 Series Models: HP Indoor Units: 4MXW2309A1 4MXW2312A1 4MXW2318A1 4MXW2324A1 This Installation Guide is for use only when applying the 4MXW23 indoor unit with a 4TXM model multi-zone outdoor unit. If installing with a single zone mini split outdoor unit, consult the installation manual shipped with the outdoor unit.
- Page 2 Warnings and Cautions Warnings are provided to alert others of the potential hazards that could result in severe personal injury or death, while cautions are designed to alert others of the conditions that could result in minor or moderate injury. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.
- Page 3 Warnings and Cautions WARNING R410-A Refrigerant under Higher Pressure than R-22! The units described in this manual use R410-A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant cylinders are painted with "pink" color to indicate the type of refrigerant and may contain a "dip"...
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Page 4: Table Of Contents
Contents Safety Precautions ........................5 Pre-Installation Checklist ......................6 Items Shipped With the Unit ...................... 7 Necessary Tools ........................7 Clearance Requirements ......................8 Installation Location ........................9 Installing the Indoor Unit ......................10 Mounting Location ........................10 Drilling the Piping Hole ......................11 Refrigerant Piping at the Indoor Unit .................. -
Page 5: Safety Precautions
23 Series High Wall Unit Safety Precautions Your personal safety and the proper operation of this equipment depend upon the strict observance of these precautions. This mark indicates a potentially hazardous situation which, if not avoided, WARNING could result in death or serious injury. -
Page 6: Pre-Installation Checklist
23 Series High Wall Unit 12. If a system pump-down is performed, close service valves and turn off the associated equipment prior to removing the refrigerant piping. Failure to do so will introduce non-condensables in the system, causing abnormal pressure in the refrigeration cycle which could lead to injury and damage. -
Page 7: Items Shipped With The Unit
23 Series High Wall Unit Items Shipped with the 23 Series High Wall Unit After unpacking the unit(s), please refrain from disposing of the packaging materials until items listed below are located. If any of these are missing, please contact the point of sale to obtain these items. -
Page 8: Clearance Requirements
23 Series High Wall Unit Clearance Requirements Space to the ceiling 6 in. or more Space to the wall 6 in. or more 6 in. or more Space to the wall 118 in. or more or more Air outlet side... -
Page 9: Installation Location
23 Series High Wall Unit Installation Location Indoor Unit WARNING Adequate Support Required! The wall structure must be adequate to support the weight of the unit. Failure to ensure adequate structural support could result in death, serious injury, and equipment or property damage. -
Page 10: Installing The Indoor Unit
23 Series High Wall Unit Installing the Indoor Unit WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. -
Page 11: Drilling The Piping Hole
23 Series High Wall Unit Wall Wall 9K-12K Level Mark the middle Space Space to the to the wall wall above above inches inches Left Right Φ2 3/16inch (56mm) Φ2 3/16inch (56mm) Rear piping hole Rear piping hole Wall Wall... -
Page 12: Refrigerant Piping At The Indoor Unit
23 Series High Wall Unit NOTICE If a wall sleeve is not used, unnecessary damage to the piping and wiring could occur. This typically results in current loss, improper grounding, and pipe leaks, Ensure no undue forces are on the piping and wiring through wall(s) and adequate draining still occurs. - Page 13 23 Series High Wall Unit 6. After evacuation is complete, additional charge can be added. a) If no additional charge is required, break the vacuum with refrigerant, then remove the gauge connectors. b) Slightly open the liquid valve at the OD unit, allow system to equalize, then fully open the liquid valve and then open the vapor service valve.
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Page 14: Installing The Condensate Pipe
23 Series High Wall Unit Installing the Condensate Pipe NOTICE Do not sharply twist or curve the condensate drain pipe. Ensure pipe ends are not submerged in water. Drain pipe must provide adequate flow and slope downward to the outlet. Failure to do so may result in leakage and overflow of the drain pan. - Page 15 23 Series High Wall Unit 3. Remove the wire clip and connect the power connection wire to the wiring terminal according to the correct color coding. It is recommended to use 4 wire colors (for example: Blue, Black, Red, Green. Connect Blue to 1, Black to 2, Red to 3 and Green to Ground). All wiring shall use ring or spade type crimped or soldered connectors (as shown in the outdoor unit installation section or manual).
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Page 16: Binding The Pipes And Cables
23 Series High Wall Unit Binding the Pipes and Cables Note: The refrigeration pipes shall be insulated separately to prevent heat transfer between the two pipes. 1. At the beginning of the indoor connections, bind the insulated refrigerant pipes, power cable, and drain hose by evenly wrapping them with an appropriate pipe tape. -
Page 17: Refrigerant Piping Tips
23 Series High Wall Unit Refrigerant Piping Tips Flaring Process 1. Hold the pipe downward to prevent cuttings from entering the pipe. 2. Using an appropriate tube cutter and deburring tool, cut and deburr the refrigerant pipe. 3. Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the indoor unit, put them onto the refrigerant pipe as shown below then flare the refrigerant pipe with a flaring tool. -
Page 18: Wiring Diagrams
23 Series High Wall Unit Wiring Diagrams Color Key Symbol Symbol Color Symbol Symbol Color Symbol Name White Green COMP Compressor o l l Blue YE/GN Yellow/Green Black Violet Orange Note: A "Jumper Cap" may be used to determine fan speed and the swing angle of horizontal louver for this model. - Page 19 23 Series High Wall Unit Indoor Unit 18K WARNING WIRED Please don't touch any electronic CONTROLLER component and terminal when the machine is running , stopping or has RECEIVER AND been powered off for less than 3 DISPLAY BOARD minutes to prevent electric shock !
- Page 20 23 Series High Wall Unit Indoor Unit Dimensions 9K-12K 8 1/4 (209.5) 33 1/4 (844.5) 4 11/16 (119.1) 21 5/16 (541.3) 7 1/4 (184.1) Φ2 3/16 (55.6) Φ2 3/16 (55.6) 1 3/8 (35.6) 1 3/8 (35.6) 3 5/16 (84.1) 5 (127)
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Page 21: Unit Dimensions
23 Series High Wall Unit Indoor Unit Dimensions 18K-24K 4 (101.6) 27 (685.8) 7 3/16 (182.6) Φ2 3/16 (55.6) Φ2 3/16 (55.6) 1 1/2 (38.1) 1 1/2 (38.1) 7 1/2 (190.5) 5 1/2 (139.7) 8 1/8 (206.3) 27 (685.8) 7 5/16 (185.7) Φ2 3/4 (69.8) -
Page 22: Auxillary Operation
23 Series High Wall Unit Auxiliary Operation If the remote controller is lost or damaged, please use the auxiliary button to turn on or turn off the air conditioner. Open the front panel of the unit and press the aux. button to turn on or turn off the unit. - Page 24 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com CONFORMSTO ULSTD.1995 CERTIFIEDTO CSASTD.C22.2 N0.236 3097844 The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.
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