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6

(3-3) 

Remove the rear metal plate for transmission wire, remote 
controller wire and refrigerant pipe.

• It is necessary to drill the knock out hole in the removable 

part. Knock down several times with a punch and ham-
mer and remove the removable part with pliers.

• When setting the refrigerant pipe to the rear side, remove 

the securing screws and the metal plate. 

(Refer to Fig. 6)

(3-4) 

Remove the hanger brackets.

• Loosen the 2 bolts (M8) used to attach the hanger brack-

ets which are on each side (4 places left and right) to 
within 3/8 in.. 

(Refer to Fig. 7, 8)

• After removing the securing screws (M5) for the hanger 

brackets which are on the rear side, pull the hanger brack-
ets back (in the direction of the arrow), and remove them. 

(Refer to Fig. 8)

(4) Attach the suspension bolts. (Use suspension bolts 

which are W3/8 or M8-M10 in size.)

• Adjust the distance of the suspension bolts from the ceiling in 

advance.

 (Refer to Fig. 9)

NOTE

• Use a hole-in anchor for existing ceilings, and 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.

INDOOR UNIT INSTALLATION

It may be easier to attach accessory parts before installing 
the indoor unit. Therefore, please also read the instruction 
manuals which are provided with the accessory parts.

As for the parts to be used for installation work, be 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 included washers, 

and secure them with double nuts to make sure.

(2) Lift the indoor unit’s main body, insert the bolts (M8) for 

the hanger brackets into the attachment part on the 
hanger brackets, while sliding the main body from the 
front.

 

(Refer to Fig. 11)

(3) Fasten the bolts for the hanger brackets (M8) securely 

in 4 places, left and right.

 

(Refer to Fig. 11)

(4) Replace the screws for the hanger brackets which had 

been removed (M5) securely in 2 places left and right. 
This is necessary to prevent any forward and back slide 
in the main body of the indoor unit.

 

(Refer to Fig. 11)

Decoration panel

Decoration
panel

Accessories

Fig. 4

Fig. 5

Protection net

(ii)

(i)

(ii)

(i)

Hook

Protection net

If it raises too much,
a hook stops catching
and falling out.

Removable part
(metal plate)

If setting the refrigerant pipe to
the rear side, remove this metal plate.

After removing, attach the resin bush
(Refer to Fig. 26)

Metal plate
securing
screw (M4)

Fig. 6

If setting the drain pipe to the
right side, block up the hole for
drain pipe with pate etc.

Indoor unit

Hanger bracket

3/8 or less 

Length of loosening 
should be less than 3/8

(Length : in.)

Fig. 7

Hanger bracket 
fixing screw (M5)

Hanger bracket

Hanger bracket 
setting bolt (M8)

Fig. 8

Ceiling slab

Anchor

Suspension bolt

False ceiling

1–2 3/16

(Length : in.)

All the above parts are field supplied.

Fig. 9

Nut (Field supplied)

Washer (3) (attached)

Double nuts
(Field supplied)

Hanger bracket

Fig. 10

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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