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•  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 (R410A) 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 R410A 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 -- R410A does not contain any chlorine, does not 

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

protection again harmful ultraviolet radiation. R410A 

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.

• 

Since R410A is a blend, the required additional refrigerant 

must be charged in its liquid state. If the refrigerant is 

charged in a state of gas, its composition can change and 

the system will not work properly.

• 

The outdoor unit is for R410A. 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.

• 

Indoor units are for indoor installation only. Outdoor units 

can be installed either outdoors or indoors.

• 

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 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 R410A, the refrigerant may deteriorate.

• 

This air conditioner or heat pump is an appliance that 

should not be accessible to the general public.

•  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-U

English

01_EN_3P675080-1.indd   2

3/24/2022   16:01:41

Summary of Contents for 2MXS18WMVJU9

Page 1: ...LATION MANUAL R410A Split Series Installation manual Manuel dinstallation Manual de instalaci n MODELS 2MXS18WMVJU9 3MXS24WMVJU9 4MXS36WMVJU9 2MXL18WMVJU9 3MXL24WMVJU9 2MXLH18WVJU9 3MXLH24WVJU9 Manuel...

Page 2: ...Do not ground units to water pipes gas pipes telephone wires or lightning rods as incomplete grounding can cause a severe shock hazard resulting in severe injury or death Additionally grounding to ga...

Page 3: ...or moisture should be prevented from getting into the system b Tight R410A does not contain any chlorine does not destroy the ozone layer and does not reduce the earth s protection again harmful ultra...

Page 4: ...ill 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 5 8ft 2m from...

Page 5: ...bottom to top 9 13 16 250 from wall Allow space for piping and electrical servicing Level mounting base available separately If there is a danger of the unit falling or overturning x the unit with fo...

Page 6: ...to either change the orientation of the outdoor unit outlet side or use the air direction adjustment grille sold separately Selecting a Location for Installation of the Indoor Units The maximum allowa...

Page 7: ...e is determined by the size of the indoor unit fittings Reducers are used at the outdoor unit to accommodate the correct gas line pipe size 3MXS 3MXL 4MXS Port 2MXS 2MXL B 07 09 12 15 18 07 09 12 15 0...

Page 8: ...he gasket 2 Connecting a pipe of 3 8 inch 9 5mm to a gas pipe connection port for 1 2 inch 12 7mm Connection port of outdoor unit No 4 No 2 Flare nut for 1 2 inch 12 7mm Be sure to attach the gasket F...

Page 9: ...which are delivered with this unit Never install a dryer to this R410A unit in order to guarantee its service life The drying material may dissolve and damage the system Improper flaring may result i...

Page 10: ...he pipe from dust and moisture All pipe bends should be as gentle as possible Use a pipe bender for bending Wall If no are cap is available cover the are mouth with tape to keep dirt and water out Be...

Page 11: ...MPa for 1 hour minimum 24 hours recommended If there is a pressure drop check for leaks make repairs and perform the pressure test again 2 Connect the gauge manifold s charging hoses to the service po...

Page 12: ...be upside down to ll with liquid Filling other cylinders Turn the cylinder upside down when lling Be sure to use the R410A tools to ensure pressure and to prevent foreign objects from entering 7 Char...

Page 13: ...ake care not to pull at the conduit Do not connect the power wire to the indoor unit Doing so may cause electric shock or fire Do not turn on the circuit breaker until all work is completed CAUTION Pr...

Page 14: ...not disconnect 5 Pass the wiring through the cutout on the bottom of the protection plate and attach the protection plate 6 After completing the work reattach the service lid to its original position...

Page 15: ...mode of the set indoor unit 2 Priority during powerful operation If the indoor unit which is set for priority room setting is operating at powerful the capabilities of other indoor units will be some...

Page 16: ...ing in night quiet mode Setting procedure Turn the night quiet mode switch SW6 1 to on COOL HEAT mode lock S15 Use the S15 connector to set the unit to only cool or heat Setting to only heat H short c...

Page 17: ...ling operation 5 Attach the valve caps once procedures are complete Gas stop valve Close Hexagonal wrench Liquid stop valve Valve caps Forced cooling operation WARNING Do not remove the switch cover u...

Page 18: ...rrection is possible as shown in the table below For details on how to read the LED display refer to the collective indications label on the reverse side of the top plate or the service manual If self...

Page 19: ...Temperature difference between inlet and outlet About 14 F 8 C About 36 F 20 C When running in one room 2 5 After trial operation is complete set the temperature to a normal level 78 F to 82 F 26 C to...

Page 20: ...Two dimensional bar code is a manufacturing code 3P675080 1 M21B361 2203 HT 00_CV_3P675080 1 indd 2 2022 03 01 11 25 45...

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