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6

English

Control box

13/16 (20)  or more

Ceiling

Inspection hatch

A

Inspection 

hatch 1

17-3/4×17-3/4 

(450×450)

Inspection 

hatch 3

Control box

Control box

unit: in. (mm)

31-1/2

(800)

31-1/2

(800)

Arrow A-1

Arrow A-2

Inspection hatch 2

(Indoor unit size 

+11-13/16 (300) 

or more)

(Indoor unit 

size or more)

7-7/8 (200) or less

D=B+11-13/16  (300) or more

B

< In the case of (1)-2, 3 >

Fig. 4

Table 1 

(unit [in. (mm)])

Model

B

C

D

15·18·24 type

39-3/8 

(1000)

40-7/8 
(1038)

51-3/16 

(1300)

30·36·48 type

55-1/8 
(1400)

56-5/8 

(1438)

66-15/16 

(1700)

54 type

61 

(1550)

62-1/2 
(1588)

72-13/16 

(1850)

(2)  Mount canvas ducts to the discharge and suction so 

that the vibration of the indoor unit will not be trans-

mitted to the ducts or ceiling. Furthermore, attach 

sound absorbing material (thermal insulation mate-

rial) to the duct inner walls and anti-vibration rubber 

to the suspension bolts (refer to 8. DUCT WORK).

(3)  The indoor unit is set to standard external static 

pressure.

• 

If external static pressure is higher or lower than the 

standard set value, the remote controller may be used 

to make field setting change in the external static pres

-

sure.  
Refer to 

10. FIELD SETTING

.

(4)  Open installation holes  

(in the case of installation onto the existing ceiling).

• 

Open the installation holes on the ceiling of the instal-
lation location, and work on the refrigerant piping, drain 
piping, remote controller wiring (unless a wireless re-
mote controller is used), and wiring between the indoor 
and outdoor units to the piping connection port and 
wiring connection port of the indoor unit (refer to each 
piping and wiring procedure items).

• 

Ceiling framework reinforcement may be required in 
order to keep the ceiling horizontal and prevent ceiling 
vibration after opening the ceiling holes. For details, 
consult your building and interior work contractors.

(5)  Install the suspension bolts.

• 

Use either a M8-M10 size bolt or equivalent. 

Use hole-in-anchors for the existing bolts and embed

-

ded inserts or foundation bolts for new bolts, and fix the 
indoor unit firmly to the building so that it may withstand 

the weight of the unit. 
In addition, adjust clearance (2-4 in. (50-100 mm)) from 
the ceiling in advance.

<Installation examples>

Foundation bolt

Suspension bolt

Indoor

unit

Ceiling slab

Long nut or 
turnbuckle

Note) Components shown in the figure above are 

all local procurement.

(6)  In the case of changing the preset suction to bottom 

side suction, replace the chamber cover and the suc-

tion flange. (Refer to Fig. 5)

1.  Remove the suction flange and chamber cover.
2.  Replace the suction flange and the chamber cover.

 CAUTION

• 

Secure a sufficient service space for the drain pan and 

electrical components before installing the indoor unit.

• 

Secure a sufficient service space for the filter chamber, 

and peripheral components before installing the indoor 
unit.

01_EN_3P493125-6E.indd   6

2022/08/03   10:36:08

Summary of Contents for FXMQ15TBVJU

Page 1: ...for future reference This manual should be left with the equipment owner Lire soigneusement ces instructions avant l installation Conserver ce manuel port e de main pour r f rence ult rieure Ce manuel...

Page 2: ...ere injury or death After completing the installation work check that the refrigerant gas does not leak throughout the system Do not install unit in an area where flammable materials are present due t...

Page 3: ...Therefore take proper measures to check for the tightness of the refrigerant piping installation Read the chapter Refrigerant Piping Work and follow the procedures Since R410A is a blend the required...

Page 4: ...ctric parts may be damaged 2 1 ACCESSORIES Check if the following accessories are attached to the indoor unit Name 1 Metal clamp 2 Drain hose 3 Duct flange connection screw Quantity 1 pc 1 pc See belo...

Page 5: ...he optional accessory and make field settings as needed Is the remote controller icon displayed Is the re mote controller connected to the master unit if the system is in simultaneous multi operation...

Page 6: ...ighting type inverter or rapid start type fluorescent lamp is installed 2 Use suspension bolts for installation Investigate if the installation place can withstand the weight of the indoor unit and if...

Page 7: ...ain piping remote controller wiring unless a wireless re mote controller is used and wiring between the indoor and outdoor units to the piping connection port and wiring connection port of the indoor...

Page 8: ...spatter and other foreign materials from entering the indoor unit and damaging the resin drain pan If holes or cracks are generated in the resin drain pan water can leak 2 Adjust so that the unit is...

Page 9: ...a flare connection coat the flared inner surface only with ether oil or ester oil Refer to Fig 10 Then turn the flare nut 3 to 4 times with your hand and screw in the nut Torque wrench Spanner Flare...

Page 10: ...Fig 11 Before brazing refrigerant piping have nitrogen flow through the refrigerant piping and substitute air with nitrogen NOTE 1 Refer to Fig 12 Then carry out brazing NOTE 2 After all the brazing...

Page 11: ...ig 13 Make sure to use the attached drain hose 2 and the metal clamp 1 Insert the drain hose 2 into the drain socket up to the point where the socket diameter becomes larger Put the metal clamp 1 to t...

Page 12: ...ate abnormal sound Fig 16 CAUTION To avoid the attached drain hose 2 getting excessive force do not bend nor twist it It may cause water leakage As for drain piping connection do not connect the drain...

Page 13: ...y not come off 3 Gradually pour 1 4 gal 1 of water from the dis charge into the drain pan and be careful spraying water to the electric components such as drain pump Refer to Fig 18 4 When the power s...

Page 14: ...ation material Field supply Suction Discharge Screws for duct anges 3 Accessory Screws for duct anges 3 Accessory Flange on discharge side Provided with the unit Fig 20 CAUTION Connect the flange and...

Page 15: ...unit Max 3 280 ft 1 000 m Indoor unit Indoor unit Max 3 280 ft 1 000 m NOTE 1 Vinyl cord with sheath or cable Insulated thickness 1 16 in 1 mm or more 9 4 WIRING CONNECTION METHOD CAUTION FOR WIRING F...

Page 16: ...ture if you have difficulty in performing this step Screws 2 locations Conduit mounting plate 12 Hook Fig 24 4 3 Connect the wiring into the control box through the wiring intake beside the control bo...

Page 17: ...1 P F 2 F 1 P L1 F 1 2 T 2 T 1 P P 2 1 F 2 L2 F L1 1 2 T T P Remote controller Remote controller Remote controller L1 L2 L1 L2 L1 L2 No 2 system When carrying out group control or 2 remote controller...

Page 18: ...on Sheathed vinyl cord or 2 core cable Wiring size AWG 18 16 0 75 1 25 mm2 Wiring length Max 328 ft 100 m External contact spec Contact that can make and break the min load of DC 15 V 1 mA 2 Actuation...

Page 19: ...ill be OFF and the indoor unit will come to a stop Table 7 Mode No FIRST CODE No Setting content SECOND CODE No 01 02 03 11 21 7 Air volume adjust ment OFF Air volume adjust ment completion Air volume...

Page 20: ...arly if the indication is one of those shown in the Table 13 it may be an error in the electrical wiring or the power supply is disconnected Therefore recheck wiring Table 13 Remote controller indicat...

Page 21: ...2209 HT 3P493125 6E EM21A039A Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 00_CV_3P493125 6E indd 2 2022 08 03 10 34 56...

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