Daikin RXJ20M2V1B Installation Manual

Daikin RXJ20M2V1B Installation Manual

R32 split series air conditioner
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INSTALLATION
MANUAL
R32 Split Series
Models
RXJ20M2V1B
RXJ25M2V1B
RXJ35M2V1B
RXM20M2V1B
RXM25M2V1B
RXM35M2V1B
ARXM25M2V1B
ARXM35M2V1B

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Summary of Contents for Daikin RXJ20M2V1B

  • Page 1: Installation Manual

    INSTALLATION MANUAL R32 Split Series Models RXJ20M2V1B RXJ25M2V1B RXJ35M2V1B RXM20M2V1B RXM25M2V1B RXM35M2V1B ARXM25M2V1B ARXM35M2V1B...
  • Page 2 3P394245-7F...
  • Page 3: Safety Precautions

    Safety Precautions Read the precautions in this manual This appliance is filled with R32. carefully before operating the unit. • The precautions described herein are classified as WARNING and CAUTION. They both contain important information regarding safety. Be sure to observe all precautions without fail. •...
  • Page 4: Precautions For Selecting The Location

    Safety Precautions CAUTION • Do not install the air conditioner at any place where there is a danger of flammable gas leakage. In the event of a gas leakage, build-up of gas near the air conditioner may cause a fire to break out. •...
  • Page 5 Precautions for Selecting the Location CAUTION When operating the air conditioner in a low outdoor ambient temperature, be sure to follow the instructions described below. ● Construct a large canopy • To prevent exposure to wind, install the outdoor unit with its suction ●...
  • Page 6: Outdoor Unit Installation Drawings

    Outdoor Unit Installation Drawings Max. allowable piping length Wrap the insulation pipe with the finishing tape from bottom Min. allowable piping length 1.5m to top. Max. allowable piping height Additional refrigerant required for refrigerant pipe 20g/m exceeding 10m in length. Gas pipe O.D.
  • Page 7: Precautions On Installation

    Installation Guidelines • Where a wall or other obstacle is in the path of outdoor unit’s inlet or outlet airflow, follow the installation guidelines below. • For any of the following installation patterns, the wall height on the outlet side should be 1200mm or less. Wall facing one side Wall facing two sides More than 100...
  • Page 8: Refrigerant Piping Work

    Outdoor Unit Installation Flaring the pipe end 1) Cut the pipe end with a pipe cutter. (Cut exactly at right angles.) Remove burrs. 2) Remove burrs with the cut surface facing downward so that the chips do not enter the pipe. Flaring Set exactly at the position shown below.
  • Page 9 Outdoor Unit Installation 4-1 Cautions on pipe handling Wall 1) Protect the open end of the pipe against dust and moisture. Be sure to place a cap. 2) All pipe bends should be as gentle as possible. Use a pipe bender Rain If no flare cap is for bending.
  • Page 10 Outdoor Unit Installation 6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve. Close it after 5 seconds, and check for gas leakage. Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods. After the check is complete, wipe all soapy water off.
  • Page 11: 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. Hexagonal 2) Carry out forced cooling operation. wrench 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench.
  • Page 12 Wiring WARNING • Do not use tapped wires, stranded wires, extension cords, or starburst connections, as they may cause overheating, electrical 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.
  • Page 13: Wiring Diagram

    Wiring Wiring diagram For applied parts and numbering refer to the wiring diagram sticker supplied on the unit. Part numbering is realized by Arabic numbers in ascending order for each part and is represented in the overview below by symbol “*” in the part code. CONNECTION PROTECTIVE EARTH (SCREW) CONNECTOR...
  • Page 14: Trial Operation And Testing

    Trial Operation and Testing Trial operation and testing 1-1 Measure the supply voltage and make sure that it falls in the specified range. 1-2 Trial operation should be carried out in either cooling or heating mode. • In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.
  • Page 16 3P386697-2C 2015.10...

Table of Contents