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•  Take into account strong winds, typhoons, or earthquakes 

when installing. Improper installation may result in the unit 

falling and causing accidents.

•  Make sure that a separate power supply circuit is provided 

for this unit and that all electrical work is carried out by 

qualified personnel licensed or certified in their jurisdiction 

according to local, state, and national regulations. An 

insufficient power supply capacity or improper electrical 

construction may lead to electric shock or fire.

• 

Make sure that all wiring is secured, that specified wires are 

used, and that no external forces act on the terminal connections 

or wires. Improper connections or installation may result in fire.

•  When wiring, position the wires so that the service lid can 

be securely fastened. Improper positioning of the service 

lid may result in electric shock, fire, or the terminals 

overheating.

•  Before touching electrical parts, turn off the unit.
•  The circuit must be protected with safety devices in 

accordance with local and national codes, i.e. a circuit breaker.

•  Securely fasten the outdoor unit service lid. If the service 

lid is not installed properly, dust or water may enter the 

outdoor unit causing fire or electric shock.

•  When installing or relocating the system, keep the refrigerant 

circuit free from substances other than the specified 

refrigerant (R32) such as air. Any presence of air or other 

foreign substance in the refrigerant circuit can cause an 

abnormal pressure rise or rupture, which may result in 

equipment damage and even injury.

•  Do not change the setting of the protection devices. If the 

pressure switch, thermal switch, or other protection device 

is shorted and operated forcibly, or parts other than those 

specified by Daikin are used, fire or explosion may occur.

•  Do not use means to accelerate the defrosting process (if 

possible) or to clean, other than those recommended by 

the manufacturer.

•  The appliance must be stored in a room without continuously 

operating ignition sources (for example: open flames, an 

operating gas appliance or an operating electric heater).

•  Do not pierce or burn.
•  Be aware that refrigerants may not contain an odor.
• 

Comply with national gas regulations.

CAUTION 

• 

Do not touch the switch with wet fingers. Touching a switch 

with wet fingers can cause electric shock.

•  Do not allow children to play on or around the unit to prevent injury.
•  Wear adequate personal protective equipment (protective 

gloves, safety glasses,…) when installing, maintaining or 

servicing the system.

• 

The heat exchanger fins are sharp enough to cut. To avoid 

injury, wear gloves or cover the fins while working around 

them.

•  Do not touch the refrigerant pipes during and immediately 

after operation as the refrigerant pipes may be hot or 

cold, depending on the condition of the refrigerant flowing 

through the refrigerant piping, compressor, and other 

refrigerant cycle parts. Your hands may suffer burns or 

frostbite if you touch the refrigerant pipes. To avoid injury, 

give the pipes time to return to normal temperature or, if 

you must touch them, be sure to wear proper gloves.

•  Install drain piping to ensure proper drainage. Improper drain 

piping may result in water leakage and property damage.

•  Insulate piping to prevent condensation.
•  Be careful when transporting the product.
•  Do not turn off the power immediately after stopping 

operation. Always wait for at least 5 minutes before turning 

off the power. Otherwise, water leakage may occur.

•  Do not use a charging cylinder. Using a charging cylinder 

may cause the refrigerant to deteriorate.

•  Refrigerant R32 in the system must be kept clean, dry, and tight. 

(a)  Clean and Dry -- Foreign materials (including mineral 

oils such as SUNISO oil or moisture) should be 

prevented from getting into the system.

(b) 

 

Tight -- R32 does not contain any chlorine, does not 

destroy the ozone layer, and does not reduce the earth’s 

protection again harmful ultraviolet radiation. R32 can 

contribute to the greenhouse effect if it is released. 

Therefore take proper measures to check for the tightness 

of the refrigerant piping installation. Read the chapter 

Refrigerant Piping 

and follow the procedures.

•  The outdoor unit is for R32. See the catalog for indoor 

models that can be connected. Normal operation is not 

possible when connected to non-compatible indoor units.

• 

Remote controller (wireless kit) transmitting distance can be 

shorter than expected in rooms with electronic fluorescent 

lamps (inverter or rapid start types). Install the indoor unit 

far away from fluorescent lamps as much as possible.

•  Do not install the air conditioner or heat pump in the 

following locations:

(a)  Where a mineral oil mist or oil spray or vapor is 

produced, for example, in a kitchen. 

 

Plastic parts may deteriorate and fall off or result in 

water leakage.

(b)  Where corrosive gas, such as sulfurous acid gas, is 

produced.  

Corroding copper pipes or soldered parts may result in 

refrigerant leakage.

(c)  Near machinery emitting electromagnetic waves. 

Electromagnetic waves may disturb the operation of 

the control system and cause the unit to malfunction.

(d)  Where flammable gas may leak, where there is carbon 

fiber, or ignitable dust suspension in the air, or where 

volatile flammables such as thinner or gasoline are 

handled. Operating the unit in such conditions can 

cause a fire.

•  Take adequate measures to prevent the outdoor unit 

from being used as a shelter by small animals. Small 

animals making contact with electrical parts can cause 

malfunctions, smoke, or fire. Instruct the user to keep the 

area around the unit clean.

•  Servicing shall be performed only as recommended by the 

manufacturer and licensed or certified in their jurisdiction.

NOTE 

•  The outdoor unit should be positioned where the unit and 

power supply wires (breaker panel to outdoor unit) are at 

least 10ft (3m) away from any televisions or radios. (The 

unit may cause interference with the picture or sound.) 

Depending on the radio waves, a distance of 10ft (3m) 

may not be sufficient to eliminate the noise.

•  Dismantling the unit, treatment of the refrigerant, oil and 

additional parts must be done in accordance with the 

relevant local, state, and national regulations.

•  Only use tools for R32 or R410A, such as a gauge 

manifold, charge hose, gas leak detector, reverse flow 

check valve, refrigerant charge base, vacuum gauge, or  

refrigerant recovery equipment.

•  If the conventional refrigerant and refrigerator oil are 

mixed in R32, the refrigerant may deteriorate.

• 

As maximum allowable pressure is 604psi (4.17MPa), the 

wall thickness of field-installed pipes should be selected 

in accordance with the relevant local, state, and national 

regulations.

RN006(R32)-U

English

01_EN_3P686865-1.indd   2

2022/04/20   9:18:26

Summary of Contents for RXM18WVJU9

Page 1: ...l MODELS RXM18WVJU9 RXM24WVJU9 DAIKIN ROOM AIR CONDITIONER INSTALLATION MANUAL R32 Split Series Installation manual Manuel dinstallation Manual de instalaci n Manuel dinstallation 00_CV_3P686865 1 ind...

Page 2: ...lly in basements and an asphyxiation hazard could occur leading to serious injury or death Do not ground units to water pipes gas pipes telephone wires or lightning rods as incomplete grounding can ca...

Page 3: ...ensation Be careful when transporting the product Do not turn off the power immediately after stopping operation Always wait for at least 5 minutes before turning off the power Otherwise water leakage...

Page 4: ...Since water will flow from the drain of the outdoor unit do not place anything under the unit which must be kept away from moisture 9 A location where flammable gas does not leak Position at least 6...

Page 5: ...CAUTION Keep the piping length between 10ft 3m and 98 1 2ft 30m Refrigerant piping must be protected from physical damage Install a plastic cover or equivalent If strong wind blows into the air disch...

Page 6: ...t is recommended to either change the orientation of the outdoor unit outlet side or use the air direction adjustment grille sold separately Outdoor Unit Installation 1 Installing the outdoor unit Whe...

Page 7: ...020 inch 0 0 5mm 0 039 0 059 inch 1 0 1 5mm 0 059 0 079 inch 1 5 2 0mm Flaring 4 Refrigerant piping CAUTION Use the flare nut fixed to the main unit This is to prevent the flare nut from cracking as a...

Page 8: ...0mm Min O D 5 8 inch 15 9mm 1 15 16 inch 50mm or more 0 039 inch 1 0mm C1220T O I D 5 8 13 16 inch 16 20mm Liquid side O D 1 4 inch 6 4mm 1 3 16 inch 30mm or more 0 031 inch 0 8mm C1220T O I D 5 16 13...

Page 9: ...ifold and stop vacuum pumping Maintain this condition for a few minutes to make sure that the compound pressure gauge pointer does not swing back 1 6 Remove the valve caps from the liquid stop valve a...

Page 10: ...r connection to the power supply terminal block Place the round crimp style terminals on the wires up to the covered part and secure in place Round crimp style terminal Stranded wire Screw Flat washer...

Page 11: ...outdoor fan turning on and off when using facility settings Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used A humidifier might c...

Page 12: ...alve and gas stop valve 2 Begin forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop forced coo...

Page 13: ...ks Incomplete cooling heating function Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated Water leakage Draining line is properly installed Water leakage System i...

Page 14: ...The two dimensional bar code is a manufacturing code 3P686865 1 M21B537 2205 HT 00_CV_3P686865 1 indd 2 2022 02 10 16 42 47...

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