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• 

This equipment can be installed with a Ground-Fault Circuit 
Interrupter (GFCI). Although this is a recognized measure 
for additional protection, with the grounding system in North 
America, a dedicated GFCI is not necessary.

• 

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, 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.

• 

Do not install in a wet room such as a bathroom or laundry 
room due to a risk of fire or electric shock.

 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.

• 

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.

• 

Heat exchanger fins are sharp enough to cut.

 

To avoid injury wear gloves or cover the fins when working 
around them.

• 

Install drain piping to proper drainage. Improper drain 
piping may result in water leakage and property damage.

• 

Insulate piping to prevent condensation.

• 

Be careful when transporting the unit.

• 

Do not turn off the power supply immediately after 
stopping operation. Always wait for at least 5 minutes 
before turning off the power supply. 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 pre-
vented 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 Work 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 gaseous state, its composition can change 
and the system will not work properly.

• 

The indoor unit is for R410A. See the catalog for indoor 
models that can be connected. Normal operation is not 
possible when connected to other units.

• 

Handheld 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 pro-

duced, 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 fire.

 NOTE

• 

Install the power supply and transmission wires for the 

indoor and outdoor units at least 3.5 ft. (1 m) away from 

televisions or radios to prevent image interference or 

noise. Depending on the radio waves, a distance of 3.5 ft. 
(1 m) 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. 

• 

Do not use the following tools that are used with 
conventional refrigerants: 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 design pressure is 580 psi (4.0 MPa), the wall thickness 

of field-installed pipes should be selected in accordance 
with the relevant local, state, and national regulations.

01_EN_3P493125-6E.indd   2

2022/08/03   10:36:06

Summary of Contents for FXMQ15TBVJU

Page 1: ...for future reference This manual should be left with the equipment owner Lire soigneusement ces instructions avant l installation Conserver ce manuel port e de main pour r f rence ult rieure Ce manuel...

Page 2: ...ere injury or death After completing the installation work check that the refrigerant gas does not leak throughout the system Do not install unit in an area where flammable materials are present due t...

Page 3: ...Therefore take proper measures to check for the tightness of the refrigerant piping installation Read the chapter Refrigerant Piping Work and follow the procedures Since R410A is a blend the required...

Page 4: ...ctric parts may be damaged 2 1 ACCESSORIES Check if the following accessories are attached to the indoor unit Name 1 Metal clamp 2 Drain hose 3 Duct flange connection screw Quantity 1 pc 1 pc See belo...

Page 5: ...he optional accessory and make field settings as needed Is the remote controller icon displayed Is the re mote controller connected to the master unit if the system is in simultaneous multi operation...

Page 6: ...ighting type inverter or rapid start type fluorescent lamp is installed 2 Use suspension bolts for installation Investigate if the installation place can withstand the weight of the indoor unit and if...

Page 7: ...ain piping remote controller wiring unless a wireless re mote controller is used and wiring between the indoor and outdoor units to the piping connection port and wiring connection port of the indoor...

Page 8: ...spatter and other foreign materials from entering the indoor unit and damaging the resin drain pan If holes or cracks are generated in the resin drain pan water can leak 2 Adjust so that the unit is...

Page 9: ...a flare connection coat the flared inner surface only with ether oil or ester oil Refer to Fig 10 Then turn the flare nut 3 to 4 times with your hand and screw in the nut Torque wrench Spanner Flare...

Page 10: ...Fig 11 Before brazing refrigerant piping have nitrogen flow through the refrigerant piping and substitute air with nitrogen NOTE 1 Refer to Fig 12 Then carry out brazing NOTE 2 After all the brazing...

Page 11: ...ig 13 Make sure to use the attached drain hose 2 and the metal clamp 1 Insert the drain hose 2 into the drain socket up to the point where the socket diameter becomes larger Put the metal clamp 1 to t...

Page 12: ...ate abnormal sound Fig 16 CAUTION To avoid the attached drain hose 2 getting excessive force do not bend nor twist it It may cause water leakage As for drain piping connection do not connect the drain...

Page 13: ...y not come off 3 Gradually pour 1 4 gal 1 of water from the dis charge into the drain pan and be careful spraying water to the electric components such as drain pump Refer to Fig 18 4 When the power s...

Page 14: ...ation material Field supply Suction Discharge Screws for duct anges 3 Accessory Screws for duct anges 3 Accessory Flange on discharge side Provided with the unit Fig 20 CAUTION Connect the flange and...

Page 15: ...unit Max 3 280 ft 1 000 m Indoor unit Indoor unit Max 3 280 ft 1 000 m NOTE 1 Vinyl cord with sheath or cable Insulated thickness 1 16 in 1 mm or more 9 4 WIRING CONNECTION METHOD CAUTION FOR WIRING F...

Page 16: ...ture if you have difficulty in performing this step Screws 2 locations Conduit mounting plate 12 Hook Fig 24 4 3 Connect the wiring into the control box through the wiring intake beside the control bo...

Page 17: ...1 P F 2 F 1 P L1 F 1 2 T 2 T 1 P P 2 1 F 2 L2 F L1 1 2 T T P Remote controller Remote controller Remote controller L1 L2 L1 L2 L1 L2 No 2 system When carrying out group control or 2 remote controller...

Page 18: ...on Sheathed vinyl cord or 2 core cable Wiring size AWG 18 16 0 75 1 25 mm2 Wiring length Max 328 ft 100 m External contact spec Contact that can make and break the min load of DC 15 V 1 mA 2 Actuation...

Page 19: ...ill be OFF and the indoor unit will come to a stop Table 7 Mode No FIRST CODE No Setting content SECOND CODE No 01 02 03 11 21 7 Air volume adjust ment OFF Air volume adjust ment completion Air volume...

Page 20: ...arly if the indication is one of those shown in the Table 13 it may be an error in the electrical wiring or the power supply is disconnected Therefore recheck wiring Table 13 Remote controller indicat...

Page 21: ...2209 HT 3P493125 6E EM21A039A Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 00_CV_3P493125 6E indd 2 2022 08 03 10 34 56...

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