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• Before touching electrical parts, turn off the unit.
• Do not touch the switch with wet fingers.

Touching a switch with wet fingers can cause electric shock. 

• Be sure to install an earth leakage breaker.

Failure to install an earth leakage breaker may result in elec-
tric shocks, or fire.

• Do not install the air conditioner in the following locations :

(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.

Electromagnetic waves may disturb the operation of the 
control system and result in a malfunction of the equip-
ment.

(d) where flammable gases may leak, where there are carbon 

fiber or ignitable dust suspensions in the air, or where vol-
atile flammables such as thinner or gasoline are handled.

Operating the unit in such conditions may result in fire.

• Heat exchanger fins are sharp enough to cut.

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

• Refrigerant pipes may be very hot no very cold during or 

immediately after operation.

Touching them could result in burns or frostbite. To avoid 
injury give the pipes time to return to normal temperature or, 
if you must touch them, be sure to wear proper gloves.

CAUTION

• Install drain pipe in order to ensure proper drainage and 

do the thermal insulation of the pipe in order to prevent 
condensate.

Improper drain pipe may result in water leakage and property 
damage.

• 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.

• Do not turn off the power immediately after stopping 

operation.

Always wait at least 5 minutes before turning off the power. 
Otherwise, water leakage and trouble may occur.

• Make sure to provide for adequate measures in order to 

prevent that the outdoor unit be used as a shelter by 
small animals.

Small animals making contact with electrical parts can cause 
malfunctions, smoke or fire. Please instruct the customer to 
keep the area around the unit clean.

NOTE

• Install the indoor and outdoor units, power supply wire 

and transmission wire 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 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.

• 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 packing 

case, be sure to lift it by the four hanger brackets. Avoid 
putting any pressure on other parts, especially swing 
flap, the refrigerant pipe, drain pipe, and other resin parts.

• Be sure to check the type of 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 selecting installation site, refer to the paper pattern.
• 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.

(Copper tubing and brazed spots may corrode which 
could eventually lead to refrigerant leaks.)

• 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.

WARNING

• Entrust installation to the place of purchase or a qualified 

person. Improper installation could lead to leak and, in worse 
cases, electric shock of fire.

• Use of unspecified parts could lead to the unit falling, leaks 

and, in worse cases, electric shock or fire.

NOTE

• Be sure to read this manual before installing the indoor unit.
• 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 FXHQ12MVJU

Page 1: ...U FXHQ24MVJU FXHQ36MVJU SYSTEM Inverter Air Conditioners INSTALLATION MANUAL Read these instructions carefully before installation Keep this manual in a handy place for future reference This manual sh...

Page 2: ...ly Refrigerant gas may produce toxic gas if it comes in contact with fire such as from a fan heater stove or cooking device Exposure to this gas could result in severe injury or death After completing...

Page 3: ...ng 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 In a domes...

Page 4: ...lammable materials are present due to risk of explosion resulting in serious injury or death WARNING If the supporting structural members are not strong enough to take the unit s weight the unit could...

Page 5: ...unit 3 1 Detach the suction grille Slide the locking knobs 2 on the suction grille inward direction of arrows and lift upwards Refer to Fig 1 With the suction grille open remove the suction grille for...

Page 6: ...e sure to use the provided accessories and specified parts designated by our company 1 Secure the hanger brackets to the suspension bolts Refer to Fig 10 NOTE To ensure they are safely secured use the...

Page 7: ...oximately 250 F so use insulation pipe cover which is sufficiently resistant Also in cases where the temperature and humidity of the refrigerant pipe sections might exceed 86 F or RH 80 reinforce the...

Page 8: ...asten both ends with the clamps 4 Refer to Fig 16 Wrap the small sealing pad 9 only around the insulation for the joints on the gas piping side Refer to Fig 16 1 For piping facing back Remove the rear...

Page 9: ...the drain socket and securely attach the metal clamp bracket inside the gray tape area on the inserted tip of the drain pipe Refer to Fig 22 Screw the screws on the metal clamp bracket until there is...

Page 10: ...sion wire between indoor out door units and between the indoor unit and the remote con troller wire are as follows 1 Outdoor unit Indoor unit Max 3280 ft Total wire length 6560 ft 2 Indoor unit Remote...

Page 11: ...result in overheating and in worse case result in electric shock or fire CAUTION To avoid a short circuit in the electric parts box be sure to apply sealing material or putty not included to the wiri...

Page 12: ...TION GRILLE THE DECORATION PANELS AND THE PROTECTION NET Once wiring is complete firmly attach the control box lid the suction grille the decoration panels and the protection net in the order opposite...

Page 13: ...the upper part The remote controller PC board is attached to the upper part of remote controller Refer to Fig 35 2 Turn the MAIN SUB changeover switch on one of the 2 remote controllers PC boards to...

Page 14: ...ill be displayed for a few seconds on the remote controller immediately after the power is turned on This display indicates that the remote controller is being checked to see whether it is ok or not a...

Page 15: ...s fault The remote controller thermistor does not function but the system thermo run is possible E3 High pressure abnormal outdoor unit E4 Low pressure abnormal outdoor unit ON OFF TEST SWING TEST E5...

Page 16: ...0510 FS 3PN06240 1E EM04A049B...

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