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3MXS24RMVJU
4MXS36RMVJU
3MXL24RMVJU
3MXS24RMVJUA
4MXS36RMVJUA
3MXL24RMVJUA
DAIKIN ROOM AIR CONDITIONER
INSTALLATION MANUAL
R410A Split Series
Installation manual
Manuel dinstallation
Manuel dinstallation
Manual de instalación
Table of Contents
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Summary of Contents for Daikin 3MXS24RMVJU

  • Page 1 DAIKIN ROOM AIR CONDITIONER INSTALLATION MANUAL R410A Split Series Installation manual Manuel dinstallation Manuel dinstallation Manual de instalación MODELS 3MXS24RMVJU 4MXS36RMVJU 3MXL24RMVJU 3MXS24RMVJUA 4MXS36RMVJUA 3MXL24RMVJUA...
  • Page 2: Table Of Contents

    Contents Safety Considerations ........1 3. Refrigerant piping ............8 4. Pressure test and evacuating system ......9 Accessories ............. 3 5. Refilling refrigerant ............10 Precautions for Selecting a Location ... 3 6. Charging with refrigerant ..........10 7. Refrigerant piping work ..........11 Precautions on Installation ......
  • Page 3 Corroding copper pipes or soldered parts may result in is shorted and operated forcibly, or parts other than those refrigerant leakage. specified by Daikin are used, fire or explosion may occur. (c) Near machinery emitting electromagnetic waves. Electromagnetic waves may disturb the operation of the control system and cause the unit to malfunction.
  • Page 4: Accessories

    Accessories Drain cap (1) Drain socket Installation manual This is at the bottom of the packaging. Drain cap (2) Reducer assy Warranty Precautions for Selecting a Location 1) Choose a place solid enough to bear the weight and vibration of the unit, where the operating sound will not be amplifi ed. 2) Choose a location where the hot air discharged from the unit or the operating sound will not cause a nuisance to the neighbors of the user.
  • Page 5: Precautions On Installation

    Precautions on Installation • Check the strength and level of the installation surface so that the unit does not cause any operating vibrations or noise after installation. • Fix the unit in place securely using foundation bolts, as in the figure. (Prepare 4 sets of 5/16 inch (M8) or 3/8 inch (M10) foundation bolts, nuts and washers; all separately available.) • It is best to screw in the foundation bolts until their ends are 3/4 inch (20mm) from the foundation surface.
  • Page 6: Connections (Connection Port)

    Connections (connection port) Install the indoor unit according to the table below, which shows the relationship between the class of indoor unit and the corresponding port. The total indoor unit class that can be connected to this unit: 2MXS18*, 2MXL18* – Up to 24000 Btu 3MXS24*, 3MXL24* –...
  • Page 7: How To Use Reducers

    How to Use Reducers No.1 No.2 No.3 No.4 No.5 No.6 φ5/8” φ1/2” φ5/8” φ1/2” φ5/8” φ5/8” φ1/2” φ3/8” φ1/2” φ3/8” φ3/8” φ3/8” Gasket (1) Gasket (2) Reduce and gasket • Use the reducers supplied with the unit as described below. (1) Connecting a pipe of φ1/2 inch (12.7mm) to a gas pipe connection port for φ5/8 inch (15.9mm) : No.
  • Page 8: Installation Space Requirements

    Installation Space Requirements • Position the unit on a horizontal surface. Any tilt in the unit should be 3° or less to the horizontal. • Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation space requirements below. • For any of the below installation patterns, the wall height on the outlet side should be 47-1/4 inch (1200mm) or less. Wall facing one side Walls facing two sides More than...
  • Page 9: Outdoor Unit Installation

    Outdoor Unit Installation Installing the outdoor unit 1) When installing the outdoor unit, refer to “Precautions for Selecting a Location” on page 3 and the “Outdoor Unit Installation Diagram” on page 4. 2) If drain work is necessary, follow the procedures below. Drain work CAUTION Drain cap (1)
  • Page 10: Pressure Test And Evacuating System

    Outdoor Unit Installation Pressure test and evacuating system WARNING • Make sure that air or any matter other than refrigerant (R410A) does not get into the refrigeration cycle. • If refrigerant gas leaks should occur, ventilate the room as soon and as much as possible. • R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
  • Page 11: Refilling Refrigerant

    Refilling refrigerant Check the type of refrigerant to be used on the machine nameplate. Precautions when adding R410A Fill from the liquid pipe in liquid form. R410A is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation. 1) Before filling, check whether the cylinder has a siphon attached or not. (It should have something like “liquid filling siphon attached” displayed on it.) Filling a cylinder with an attached siphon Filling other cylinders Stand the cylinder upright when filling.
  • Page 12: Refrigerant Piping Work

    Outdoor Unit Installation Refrigerant piping work 7-1. Cautions on pipe handling Wall Be sure to place a cap. • Protect the open end of the pipe from dust and moisture. Rain • All pipe bends should be as gentle as possible. Use a pipe bender for If no flare cap is bending.
  • Page 13: Wiring

    Wiring WARNING • Do not use tapped wires, extension cords, or starburst connections, as they may cause overheating, electric shock, or fire. • Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the terminal block.) Doing so may cause electric shock or fire. • The circuit must be protected with safety devices in accordance with local and national codes, i.e. a circuit breaker. • Use an all-pole disconnection type circuit breaker with at least 1/8 inch (3mm) between the contact point gaps.
  • Page 14 Wiring [Wiring procedure] Outdoor unit 1) Strip the insulation from the wire (3/4inch (20mm)). power supply Note: Take care to ensure that all wiring Room Room between indoor unit and outdoor unit has a consistent connection. Any splices can 2) Connect the inter-unit wires between the indoor and cause communication errors.
  • Page 15: Priority Room Setting

    Priority Room Setting • To use priority room setting, initial settings must be made when the unit is installed. Explain the priority room setting, as described below, to the user, and confirm whether or not the user wants to use priority room setting. Setting it in the guest and living rooms is convenient. About the priority room setting function The indoor unit for which priority room setting is applied takes priority in the following cases. 1) Operation mode priority The operation mode of the indoor unit which is set for priority room setting takes priority.
  • Page 16: Night Quiet Mode Setting

    Night Quiet Mode setting • If night quiet mode is to be used, initial settings must be made when the unit is installed. Explain night quiet mode, as described below, to the user, and confirm whether or not the user wants to use night quiet mode. About night quiet mode The night quiet mode function reduces operating noise of the outdoor unit at nighttime. This function is useful if the user is worried about the effects of the operating noise on the neighbors. However, if night quiet mode is running, cooling capacity will be saved.
  • Page 17: Pump Down Operation

    Pump Down Operation In order to protect the environment, be sure to pump down when relocating or disposing of the unit. 1) Remove the valve cap from liquid stop valve and gas stop valve. Close 2) Carry out forced cooling operation. Gas stop valve 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal Hexagonal...
  • Page 18: Trial Operation And Testing

    Trial Operation and Testing • Before starting the trial operation, measure the voltage at the primary side of the circuit breaker. • Check that all liquid and gas stop valves are fully open. • Check that piping and wiring all match. The wiring error check can be conveniently used for underground wiring and other wiring that cannot be directly checked.
  • Page 19: Trial Operation And Testing

    Trial operation and testing • During the trial operation, first check the operation of each unit individually. After this, check the simultaneous operation of all indoor units. Check both COOL and HEAT operations. 2-1. Measure the supply voltage and make sure that it is within the specified range. 2-2. In COOL operation, select the lowest programmable temperature; in HEAT operation, select the highest programmable temperature. 2-3. Carry out the trial operation following the instructions in the operation manual to ensure that all functions and parts, such as the movement of the flap, are working properly.
  • Page 20 Two-dimensional bar code is a manufacturing code. 3P500432-6E M19B233 (1912) HT...

Table of Contents