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3

CAUTION

While following the instructions in this installation man-
ual, install drain piping in order to ensure proper drain-
age and insulate piping in order to prevent 
condensation.

Improper drain piping may result in water leakage and prop-
erty damage.

Do not touch the heat exchanger fins.  

Improper handling may result in injury.

Be very careful about product transportation.

Some products use PP bands for packaging. Do not use any 
PP bands for a means of transportation.  It is dangerous.

Safely dispose of the packing materials.

Packing materials, such as nails and other metal or wooden 
parts, may cause stabs or other injuries.
Tear apart and throw away plastic packaging bags so that 
children will not play with them. If children play with a plastic 
bag which was not torn apart, they face the risk of suffoca-
tion. 

Do not turn off the power immediately after stopping 
operation. 

Always wait at least five minutes before turning off the power. 
Otherwise, water leakage and trouble may occur.

NOTE

Install the indoor and outdoor units, power supply wiring 
and connecting wires at least 3.5ft. away from televisions or 
radios in order to prevent image interference or noise.

(Depending on the radio waves, a distance of 3.5ft. may not 
be sufficient enough to eliminate the noise.)

Remote controller (wireless kit) transmitting distance 
can result shorter than expected in rooms with elec-
tronic fluorescent lamps. (inverter or rapid start types)

Install the indoor unit as far away from fluorescent lamps as 
possible.

This unit is a class A product.

In a domestic environment this product may cause radio 
interference in which case the user may be required to take 
adequate measures.

Dismantling of the unit, treatment of the refrigerant, oil 
and eventual other parts, should be done in accordance 
with the relevant local and national regulations. 

2. BEFORE INSTALLATION

When moving the unit while removing it from the carton 
box, be sure to lift it by holding on to the four lifting lugs 
without exerting any pressure on other parts, especially, 
the refrigerant piping, drain piping, and other resin parts.

• Be sure to check the type of R410A refrigerant to be used 

before installing the unit. (Using an incorrect refrigerant will 
prevent normal operation of the unit.)

• The accessories needed for installation must be retained in 

your custody until the installation work is completed. Do not 
discard them!

• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until reach-

ing the installation site. Where unpacking is unavoidable, use 
a sling of soft material or protective plates together with a 
rope when lifting, to avoid damage or scratches to the unit.

• When moving the unit at or affter opening, hold the unit by 

the hanger brackets (× 4). Do not apply force to the refriger-
ant piping, drain piping or plastic parts.

• For the installation of an outdoor unit, refer to the installation 

manual attached to the outdoor unit.

• Do not install or operate the unit in rooms mentioned below.

Laden with mineral oil, or filled with oil vapor or spray 
like in kitchens. (Plastic parts may deteriorate which 
could eventually cause the unit to fall out of place, or 
could lead to leaks.)

Where corrosive gas like sulfurous gas exists. (Cop-
per tubing and brazed spots may corrode which could 
eventually lead to refrigerant leaks.)

Where exposed to combustible gases and where vol-
atile flammable gas like thinner or gasoline is used. 
(Gas in the vicinity of the unit could ignite.)

Where machines can generate electromagnetic 
waves. (Control system may malfunction.)

Where the air contains high levels of salt such as that 
near the ocean and where voltage fluctuates greatly 
such as that in factories. 
Also in vehicles or vessels.

• This unit, both indoor and outdoor, is suitable for installation in a 

commercial and light industrial environment.
If installed as a household appliance it could cause electro-
magnetic interference.

NOTE

• Be sure to read this manual before installing the indoor unit.
• Entrust installation to the place of purchase or a qualified ser-

viceman. Improper installation could lead to leaks and, in 
worse cases, electric shock of fire.

• Use only parts provided with the unit or parts satisfying 

required specifications. Unspecified parts could cause the 
unit to fall out of place, or could lead to leaks and, in worse 
cases, electric shock or fire.

• Be sure to mount an air filter (part to be procured in the field) in 

the suction air passage in order to prevent water leaking, etc.

2-1

ACCESSORIES

Check the following accessories are included with your unit.

Name

1) Drain

 hose

2) Metal 

clamp

3) Washer for 

 hanger

 bracket

4) Clamp

Quantity

1 pc.

1 pc.

8 pcs.

4 pcs.

Shape

Name

5) Paper 

pattern for 

installation

6) Screws 

(M5)

7) Washer 

fixing plate

Insulation for 

fitting

Quantity

1 pc.

4 pcs.

4 pcs.

1 each

Shape

Also used as 

packing

material

For paper 

pattern for 

installa-

tion

8) for gas 

pipe

9) for liquid 

pipe

Name

Sealing pad

(Other)

• Installation manual

• Operation manual

Quantity

1 each

2 pcs.

Shape

10) Large

11) Medium

12) Small

Summary of Contents for FXFQ12MVJU

Page 1: ...VJU FXFQ18MVJU FXFQ24MVJU FXFQ30MVJU FXFQ36MVJU SYSTEM Inverter Air Conditioners INSTALLATION MANUAL Read these instructions carefully before installation Keep this manual in a handy place for future...

Page 2: ...LATION 5 5 INSTALLATION PROCEDURES FOR FRESH AIR INTAKE DUCT CONNECTION 6 6 INDOOR UNIT INSTALLATION 6 7 REFRIGERANT PIPING WORK 7 8 DRAIN PIPING WORK 8 9 ELECTRIC WIRING WORK 10 10 WIRING EXAMPLE AND...

Page 3: ...esult in the equip ment falling and causing injuries Carry out the specified installation work after taking into account strong winds typhoons or earthquakes Improper installation work may result in t...

Page 4: ...ne of transport Leave the unit inside its packaging while moving until reach ing the installation site Where unpacking is unavoidable use a sling of soft material or protective plates together with a...

Page 5: ...t be sufficient enough to eliminate the noise 2 Ceiling height This indoor unit may be installed on ceilings up to 11 5 ft 30 36 13 8 ft in height Refer to the table 3 Air flow direction The below fig...

Page 6: ...rked on the paper pattern for instal lation Refer to it to check for points requiring reinforcing length in 4 PREPARATIONS BEFORE INSTALLA TION 1 Relation of ceiling opening to unit and suspension bol...

Page 7: ...nd a sunken insert sunken anchor or other field supplied parts for new ceilings to reinforce the ceiling to bear the weight of the unit Adjust clearance from the ceiling before proceeding further 5 IN...

Page 8: ...BEFORE INSTALLATION 1 3 Perform steps 4 5 in 6 1 For new ceilings 7 REFRIGERANT PIPING WORK 7 1 GENERAL INSTRUCTIONS For refrigerant piping of outdoor units see the installation man ual attached to t...

Page 9: ...unit Any exposed piping may cause condensation or burns if touched 7 4 Brazing referigerant piping Before brazing local refrigerant piping nitrogen gas shall be blown through the piping to expel air...

Page 10: ...r the operating capacity of the unit NOTE Drain piping connections Do not connect the drain piping directly to sewage pipes that smell of ammonia The ammonia in the sewage might enter the indoor unit...

Page 11: ...ax 3280 ft Total wiring length 6560 ft 2 Indoor unit Remote controller Max 1640 ft 10 WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER 10 1 HOW TO CONNECT WIRINGS Methods of wiring power supply uni...

Page 12: ...he terminal Tightening torque 0 97ft lbf 10 2 Tightening torque for the terminal screws Use the correct screwdriver for tightening the terminal screws If the blade of screwdriver is too small the head...

Page 13: ...rystal display air filer signs to display the time to clean air filters Change the SECOND CODE NO according to Table 5 depending on the amount of dirt or dust in the room SECOND CODE NO is factory set...

Page 14: ...ON FOR SERVICING of the outdoor unit If any of the items in Table 6 are displayed there may be a problem with the wiring or power so check the wiring again Table 4 Remote control display Content Conce...

Page 15: ...14 MEMO...

Page 16: ...0403 HT 3PN01417 8U EM03A040B Daikin US Corporation 375 Park Avenue Suite 3308 New York NY 10152 www daikinac com info daikinac com...

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