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VRV SYSTEM Inverter Air Conditioners

Installation manual

CONTENTS

1. SAFETY CONSIDERATIONS ......................................... 2
2. BEFORE INSTALLATION ............................................... 3
3. SELECTING INSTALLATION SITE................................. 4
4. PREPARATIONS BEFORE INSTALLATION.................. 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 HOW TO SET 

THE REMOTE CONTROLLER ..................................... 10

11. FIELD SETTING............................................................ 12
12. INSTALLATION OF THE DECORATION PANEL ......... 13
13. TEST OPERATION ....................................................... 13

1. SAFETY CONSIDERATIONS

Please read these “SAFETY CONSIDERATIONS” carefully 
before installing air conditioning equipment and be sure to 
install it correctly. After completing the installation, make sure 
that the unit operates properly during the start-up operation.
Please instruct the customer on how to operate the unit and 
keep it maintained.
Also, inform customers that they should store this installation 
manual along with the operation manual for future reference.
This air conditioner comes under the term “appliances not 
accessible to the general public”.
Meaning of warning, caution and note symbols.

WARNING

  ............ Indication a potentially hazardous sit-

uation which, if not avoided, could 
result in death or serious injury. 

CAUTION

  ............. Indication a potentially hazardous sit-

uation which, if not avoided, may 
result in minor or moderate injury.  It 
may also be sued to alert against 
unsafe practices. 

NOTE

 .................... Indication situation that may result in 

equipment or property-damage-only 
accidents.  

WARNING

• Ask your dealer or qualified personnel to carry out 

installation work. Do not try to install the machine by 

yourself.

Improper installation may result in water leakage, electric 
shocks or fire.

Perform installation work in accordance with this 
installation manual.

Improper installation may result in water leakage, electric 
shocks or fire.

When installing the unit in a small room, take mea-
sures against to keep refrigerant concentration from 
exceeding allowable safety limits in the event of refrig-
erant leakage.

Contact the place of purchase for more information. Excessive 
refrigerant in a closed ambient can lead to oxygen deficiency.

Be sure to use only the specified accessories and 
parts for installation work.

Failure to use the specified parts may result in water leakage, 
electric shocks, fire or the unit falling.

Install the air conditioner on a foundation strong 
enough to withstand the weight of the unit.

A foundation of insufficient strength may result 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 the equipment falling 
and causing accidents.

Make sure that a separate power supply circuit is pro-
vided for this unit and that all electrical work is carried 
out by qualified personnel according to local laws and 
regulations and this installation manual.

An insufficient power supply capacity or improper electrical 
construction may lead to electric shocks or fire.

Make sure that all wiring is secured, the specified 
wires and used, and no external forces act on the ter-
minal connections or wires.

Improper connections or installation may result in fire.

When wiring the power supply and connecting the 
remote controller wiring and transmission wiring, 
position the wires so that the electric parts box lid can 
be securely fastened.

Improper positioning of the electric parts box lid may result in 
electric shocks, fire or the terminals overheating.

If the refrigerant gas leaks during installation, ventilate 
the area immediately.

Toxic gas may be produced if the refrigerant gas comes into 
contact with fire.

After completing the installation work, check that the 
refrigerant gas does not leak.

Toxic gas may be produced if the refrigerant gas leaks into 
the room and comes into contact with a source of fire, such 
as a fan heater, stove or cooker.

Before touching electrical parts, turn off the unit.

Ground the air conditioner. Do not connect the ground 
wire to gas or water pipes, lightning rod or a telephone 
ground wire.

Incomplete grounding may result in electric shocks.

Do not touch the switch with wet fingers. 

Touching a switch with wet fingers can cause electric shock. 

Install an leak circuit breaker, as required. 

If an leak circuit breaker is not installed, electric shock may 
result. 

Do not install the air conditioner in the following loca-
tions:

(a) where a mineral oil mist or an 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 pro-
duced Corroding copper pipes or soldered parts may result 
in refrigerant leakage.
(c) near machinery emitting electromagnetic waves Electro-
magnetic waves may disturb the operation of the control sys-
tem and result in a malfunction of the equipment.
(d) where flammable gases may leak, where there are car-
bon fiber or ignitable dust suspensions in the air, or where 
volatile flammables such as thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.

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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