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Note: 

When connecting the power supply cord, make sure that the phase of the power supply 

matches with the voltage and phase indicated on the nameplate, .  If the power supply does 
not match the nameplate, the compressor will not operate properly and the equipment may be 
damaged.

Grounding Requirements

• 

Follow your local, State and National Electric Codes (NEC) when grounding this unit.

• 

The air conditioner is classified as a Class I appliance and must be grounded.

• 

The yellow-green wire of the air conditioner is the ground wire and cannot be used for other 
purposes or cut off, otherwise it would create an electric shock hazard.  

• 

Do not ground the unit to a utility pipe, arrester or telephone ground.  Incomplete ground may 
cause electrical shock or fire. A high current surge from lightning or other sources may cause 
damage to the air conditioner.  

Installation of Controllers

Refer to the controller installation manual for instructions and functionality.

Wiring Precautions

23

Floor and Ceiling Unit

 

CAUTION

Improper operation may lead to personal injury or property damage. 

Summary of Contents for 4MXX8509B10N0

Page 1: ...s Manual Split System R 410A Air Handler for Multi Zone Inverter System 9 000 Btu h to 24 000 Btu h Floor and Ceiling Type Models 4MXX8509B10N0 4MXX8512B10N0 4MXX8518B10N0 4MXX8524B10N0 May 2021 MS S...

Page 2: ...Attention Warnings and Cautions appear at appropriate sections throughout this literature Read these carefully WARNING Indicates a potentially hazardous situation which if not avoided could result in...

Page 3: ...trainers must be changed Do not break a vacuum with air Do not leak check the sealed system with compressed air Unless instructed by factory service representative external refrigeration driers are pr...

Page 4: ...igerant Piping 18 Flaring Processing 18 Bending Pipes 18 Refrigerant Piping at the Outdoor Unit 19 Insulating the Refrigerant Piping and Connections 19 Wiring at the Indoor Unit 20 Stranded Wiring Con...

Page 5: ...er to the installation specifications for additional requirements 5 Electrical work should be carried out in accordance with the installation manual and local state and National Electric Code NEC Insu...

Page 6: ...electrical requirements will be met 5 Check the installation locations to ensure the weight of the units can be supported 6 Check the refrigerant pipe sizes and ensure they have been or will be instal...

Page 7: ...ions may be included in outdoor unit 4 Flare nuts for connecting refrigerant pipes 5 Mounting fasteners 6 Wired remote control and 25 feet of connection cable typically packaged in cellophane bubble N...

Page 8: ...nit NOTE The minimum distance from the floor to the bottom of the indoor unit is a minimum of 11 75 300mm for floor installation and 90 5 2300mm for ceiling installations Unit Main Components Wireless...

Page 9: ...xcessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids NOTICE System Component Damage Do not remove the seal caps fro...

Page 10: ...horizontally level 9 Be sure to leave enough space to allow access for routine maintenance clearance between the bottom of the indoor unit and the floor is a minimum of 11 75 300mm for floor installat...

Page 11: ...rvice 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 ref...

Page 12: ...bracket by pulling it backward 6 Release the claws in the 3 places indicated 7 Release the center hook and remove the front panel 8 Release the claws in the places indicated on the electric box cover...

Page 13: ...bolts M6 to prevent displacement of the indoor unit 6 Adjust the height so the rear side of the drain plpe is at a slight decline for improved condensate drainage 7 Reinstall and tighten the right and...

Page 14: ...ications 2 For ceiling applications the unit must be level side to side Adjust the height of the unit fore and aft to make the drain pipe slant slightly downward so condensate water will flow properly...

Page 15: ...25mm wall thickness 0 05 inches 1 5mm 6 The drain pipe should be as short as possible and with at least a 0 6 degree slope to avoid forming air pockets Installation of the Condensate Pipe 1 Use the s...

Page 16: ...forming other installation processes It is recommended to apply a soap bubble solution and observe the connection 5 Evacuate each individual refrigeration circuit to 350 microns or below and close off...

Page 17: ...will put stress on the indoor unit and could lead to leaking or breakage Install refrigeration lines matching the indoor unit refrigeration tubing diameters Tube adapters are supplied with the outdoo...

Page 18: ...the flare part is spread evenly and there are no cracks 1 Use a refrigerant pipe bending tool to shape refrigerant piping smaller diameter piping may allow for light hand bending providing minimum di...

Page 19: ...oor Unit Tighten the flare nut of the connection pipe at the outdoor unit valve connector Follow the flare nut guidelines in this manual Insulating the Refrigerant Piping and Connections 1 The refrige...

Page 20: ...box of the indoor unit 3 Route the power connection cord from the back of the indoor unit and pull it toward the front through the wiring hole 4 Insert the power cord through the rubber ring 5 Pull th...

Page 21: ...s Stranded Wire Note Match the terminal block numbers and connection wire colors with those of the indoor units WARNING 1 Ensure power supplied to the equipment both indoor and outdoor units is discon...

Page 22: ...specification 5 Improperly installed and grounded field wiring poses fire and electrocution hazards For high voltage connections flexible electrical conduit is recommended whenever vibration transmis...

Page 23: ...nce and must be grounded The yellow green wire of the air conditioner is the ground wire and cannot be used for other purposes or cut off otherwise it would create an electric shock hazard Do not grou...

Page 24: ...power wiring match the unit requirements Improper wiring can create malfunction and fire or electrocution hazard 9 Are there any obstructions near the air inlets and air outlets for the indoor and ou...

Page 25: ...Diagram NOTE The wiring diagrams in this guide are included as a reference The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and...

Page 26: ...mensions 4MXX8509B 4MXX8524B A C Model A B H C D 4MXX8509B 34 2 870 9 2 235 26 2 665 32 812 12 5 318 4MXX8512B 4MXX8518B 4MXX8524B 47 2 1200 9 2 235 26 2 665 45 1142 12 5 318 Unit inch mm 26 Floor and...

Page 27: ...door ambient temperature sensor is open short circuited F4 Outdoor condenser temperature sensor is open short circuited F5 Outdoor discharge temperature sensor is open short circuited C5 Jumper cap ma...

Page 28: ...eard when unit is operating and after operating This sound occurs when the unit panels expand or contract due to temperature change The unit blows out dust When the unit has been off for a period of t...

Page 29: ...water otherwise electric shock may occur Cleaning the Air Filter 1 Open the air inlet grille Open the two buckles on the grille as shown in Fig A below Remove the screws under the buckles with a screw...

Page 30: ...of the heat exchanger Blow away dust by compressed air if available Never use water to wash the heat exchanger Drain Pipe Regularly check to see if the drain pipe is clogged in order to ensure drain c...

Page 31: ...nit CONFORMSTO ULSTD 1995 CERTIFIEDTO CSASTD C22 2 N0 236 3097844 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable energy efficient indoor...

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