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3

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.

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 wir-
ing and connecting wires at least 3.5ft. away from televi-
sions 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.

Summary of Contents for FXMQ30MVJU

Page 1: ...in type FXSQ12MVJU FXSQ30MVJU FXSQ18MVJU FXSQ36MVJU FXSQ24MVJU FXSQ48MVJU SYSTEM Inverter Air Conditioners INSTALLATION MANUAL Read these instructions carefully before installation Keep this manual in...

Page 2: ...RK 6 DRAIN PIPING WORK 7 ELECTRIC WIRING WORK 7 WIRING EXAMPLE AND HOW TO SET THE REMOTE CON TROLLER 8 SELECTING INSTALLATION SITE 11 PREPARATIONS BEFORE INSTALLATION 11 INDOOR UNIT INSTALLATION 12 RE...

Page 3: ...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 pa...

Page 4: ...rts 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 t...

Page 5: ...or 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...

Page 6: ...e strong enough to bear the equipment s weight Use embedded inserts or anchor bolts with new buildings and hole in anchors with old buildings 5 INDOOR UNIT INSTALLATION Installing optional accessories...

Page 7: ...he installation method mentioned below After the work is finished make sure to check that there is no gas leak When you keep on tightening the flare nut with a spanner there is a point where the tight...

Page 8: ...n the unit is running so be sure to provide condensate trap on the condensate outlet See the figure In order to prevent foreign matter from building up inside the piping you should avoid curves as muc...

Page 9: ...rmly When attaching the electric parts box lid make sure no wires get caught in the edges Pass wiring through the wiring through holes to prevent damage to them Make sure the remote controller wiring...

Page 10: ...he INSTALLATION MANUAL OF REMOTE CONTROLLER attached to the remote controller 6 Never connect power supply wiring to the terminal block for remote controller wiring A mistake of the sort could damage...

Page 11: ...SAJ25K36 FXSQ18MVJU 16 3 4 or more BYBS45DJW1 Installation not required 13 3 4 or more KSAJ25K56 FXSQ24MVJU 16 3 4 or more BYBS71DJW1 Installation not required 13 3 4 or more KSAJ25K80 FXSQ30 36 48MVJ...

Page 12: ...res at least 3 5 ft away from televisions or radios in order to prevent image interference or noise Depending on the radio waves a distance of 3 5 ft may not be sufficient enough to eliminate the nois...

Page 13: ...force the ceiling to bearing the weight of the unit 5 INDOOR UNIT INSTALLATION Installing optional accessories except for the decoration panel before installing the indoor unit is easier As for the pa...

Page 14: ...he unit ventilate the room thoroughly right away 6 2 Connecting the refrigerant piping When connecting the flare nut coat the flare both inside and outside with ester oil or ether oil and initially ti...

Page 15: ...flared or a flanged connection Nitrogen should be set to 2 9psi with a pressure reducing valve if brazing while inserting nitrogen into the piping NOTE Do not use flux when brazing refrigerant piping...

Page 16: ...e unit Press to go back to the first mode You can check whether drainage is satisfactory or not by removing the access opening lid and checking the water level of the drain pan through the access open...

Page 17: ...remote controller is as follows 1 Outdoor unit Indoor unit Max 3280 ft Total wiring length 6560 ft 2 Indoor unit Remote controller Max 1640 ft 2 Insulated thickness 1 16 or more Model Power supply wi...

Page 18: ...pply terminal Looseness in the connection may cause overheating Use the specified electric wire Connect the wire securely to the terminal Lock the wire down without applying excessive force to the ter...

Page 19: ...CONNECTOR According to the system static pressure requirement reposi tion the adaptors of PC board inside the electric parts box as shown in the below drawings NOTE The unit is factory set for standar...

Page 20: ...CONTROL BY 2 REMOTE CONTROLLERS Con trolling 1 indoor unit by 2 remote controllers When using 2 remote controllers one must be set to MAIN and the other to SUB MAIN SUB CHANGEOVER 1 Insert a screw dr...

Page 21: ...ORCED OFF at factory set 11 TEST OPERATION Refer to the installation manual of the outdoor unit The operation lamp of the remote controller will flash when an malfunction occurs Check the malfunction...

Page 22: ...0403 HT 3P086156 9N EM03A042B Daikin US Corporation 375 Park Avenue Suite 3308 New York NY 10152 www daikinac com info daikinac com...

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