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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 electrical 

wiring box cover can be securely fastened. Improper 

positioning of the electrical wiring box cover 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 terminal cover (panel). If the 

terminal cover/panel 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, resulting in 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.

•  When installing or relocating the air conditioner, do not let 

any other substances besides R32, such as air, enter the 

refrigerant circuit.  

The presence of air or foreign matter in the refrigerant 

circuit causes an abnormal pressure rise, which may 

result in equipment damage and even injury.

•  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.

RN004(R32)-U

English

01_EN_3P628775-2A.indd   2

2021/02/19   13:18:22

Summary of Contents for RXM09VVJU

Page 1: ...English Fran ais Espa ol MODELS RXM09VVJU RXM12VVJU DAIKIN ROOM AIR CONDITIONER INSTALLATION MANUAL R32 Split Series Installation manual Manuel d installation Manual de instalaci n...

Page 2: ...A massive leak can lead to oxygen depletion especially in basements and an asphyxiation hazard could occur leading to serious injury or death Do not ground units to water pipes gas pipes telephone wi...

Page 3: ...re 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 tr...

Page 4: ...one containing sulfate gas corrosion may shorten the life of the air conditioner 8 Since water will flow from the drain of the outdoor unit do not place anything under the unit which must be kept away...

Page 5: ...h wire or other means How to remove the stop valve cover 1 Remove the screw on the stop valve cover 2 Slide the stop valve cover downward to remove it How to attach the stop valve cover 1 Insert the u...

Page 6: ...orientation of the outdoor unit outlet side or use the air direction adjustment grille sold separately Outdoor Unit Installation 1 Installing the outdoor unit When installing the outdoor unit refer t...

Page 7: ...the flare nut is fitted When flaring do not over tighten and crack Check Set exactly at the position shown below A Die Flare tool for R32 or R410A Conventional flare tool Clutch type Clutch type Rigid...

Page 8: ...eep dirt and water out Piping size Minimum bend radius Piping thickness Thermal insulation size Thermal insulation thickness Gas side O D 3 8 inch 9 5mm 1 3 16 inch 30mm or more 0 031 inch 0 8mm C1220...

Page 9: ...ve Lo on the gauge manifold 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 t...

Page 10: ...trip length may cause electric shock or current leakage If the stranded wires must be used make sure to use the round crimp style terminal for connection to the power supply terminal block Place the r...

Page 11: ...the unit is exposed to direct wind provide a windbreak wall Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings Do not place...

Page 12: ...tion 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 cooling operation 5 Attach the valve cap once procedure...

Page 13: ...vibration noise No refrigerant gas leaks Incomplete cooling heating function Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated Water leakage Draining line is pro...

Page 14: ...3P628775 2A M20B074A 2102 HT The two dimensional bar code is a manufacturing code...

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