Daikin FXFQ-M, FXFQ12MVJU, FXFQ18MVJU, FXFQ24MVJU, FXFQ30MVJU Engineering Data

EDUS 39 - 600 - F1_a

AMERICAS

FXFQ-M

Ceiling Mounted Cassette Type

(Multi Flow)

EDUS39-600-F1_a

FXFQ-M 1

FXFQ-M

Ceiling Mounted Cassette Type

(Multi Flow)

1. External Appearance...................................................................................2

2. Specifications ..............................................................................................3

3. Dimensions .................................................................................................5

4. Piping Diagrams..........................................................................................8

5. Wiring Diagrams..........................................................................................9

6. Electric Characteristics..............................................................................10

7. Capacity Tables ........................................................................................11

7.1 Cooling Capacity ........................................................................................ 11

7.2 Heating Capacity ........................................................................................ 12

8. Air Velocity and Temperature Distributions...............................................13

9. Sound Levels ............................................................................................18

10.Installation .................................................................................................19

11.Accessories...............................................................................................35

External Appearance EDUS39-600-F1_a

FXFQ-M 2

1. External Appearance

FXFQ12~36M

EDUS39-600-F1_a Specifications

FXFQ-M 3

2. Specifications

Ceiling Mounted Cassette Type (Multi-Flow)

Notes:

1. Nominal cooling capacities are based on the following conditions:
Return air temperature: 80°FDB, 67°FWB
Outdoor temperature: 95°FDB
Equivalent ref. piping length: 25 ft / 7.5 m (Horizontal)

2. Nominal heating capacities are based on the following conditions:
Return air temperature: 70°FDB.
Outdoor temperature: 47°FDB, 43°FWB
Equivalent ref. piping length: 25 ft / 7.5 m (Horizontal)

3. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.

4. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation,
these values are normally somewhat higher as a result of installation conditions.

5. Refer to page 10 for Power Input.

Model FXFQ12MVJU FXFQ18MVJU FXFQ24MVJU

Cooling Capacity

1

Btu/h 12,000 18,000 24,000

Heating Capacity

2

Btu/h 13,500 20,000 27,000

Casing / Color Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate

Dimensions: (H × W × D)

in

(mm)

9-1/8

× 33-1/8 × 33-1/8

(231.8 x 841.4 x 841.4)

9-1/8 × 33-1/8 × 33-1/8

(231.8 x 841.4 x 841.4)

9-1/8 × 33-1/8 × 33-1/8

(231.8 x 841.4 x 841.4)

Coil (Cross
Fin Coil)

Rows × Stages × FPI 2

× 8 × 17 2 × 8 × 17 2×8×17

Face Area ft² (m²) 3.56’ (1.1 m) 3.56’ (1.1 m) 3.56’ (1.1 m)

Fan

Model QTS45B14M QTS45B14M QTS45B14M

Type Turbo Fan Turbo Fan Turbo Fan

Motor Output kW 0.04 0.04 0.04

Air Flow Rate (H/L) cfm 460/350 570/390 670/490

Drive Direct Drive Direct Drive Direct Drive

Temperature Control

Microprocessor Thermostat

for Cooling and Heating

Microprocessor Thermostat

for Cooling and Heating

Microprocessor Thermostat

for Cooling and Heating

Sound Absorbing Thermal Insulation Material

Foamed Polystyrene /
Foamed Polyethylene

Foamed Polystyrene /
Foamed Polyethylene

Foamed Polystyrene /
Foamed Polyethylene

Piping
Connections

Liquid Pipes in / mm φ1/4” / 6.4 mm (Flare Connection) φ1/4” / 6.4 mm (Flare Connection) φ3/8” / 9.5 mm (Flare Connection)

Gas Pipes in / mm φ1/2” / 12.7 mm (Flare Connection) φ1/2” / 12.7 mm (Flare Connection) φ5/8” / 15.8 mm (Flare Connection)

Drain Pipe in / mm

VP25

External Dia. 1-1/4” / 31.8 mm Internal

Dia. 1” / 25.4 mm

VP25

External Dia. 1-1/4” / 31.8 mm Internal

Dia. 1” / 25.4 mm

VP25

External Dia. 1-1/4” / 31.8 mm Internal

Dia. 1” / 25.4 mm

Machine Weight (Mass) Lbs 55 55 55

Sound Level (H/L)

4

dBA 31/28 33/28 34/29

Safety Devices Fuse, Thermal Protector for Fan Motor Fuse, Thermal Protector for Fan Motor Fuse, Thermal Protector for Fan Motor

Refrigerant Control Electronic Expansion Valve Electronic Expansion Valve Electronic Expansion Valve

Connectable outdoor unit R-410A Series R-410A Series R-410A Series

Decoration
Panels
(Option)

Model BYC125K-W1 BYC125K-W1 BYC125K-W1

Color White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5)

Dimensions: (H × W × D)

in

(mm)

1-5/8

× 37-3/8 × 37-3/8

(41.3x 949.3 x 949.3

1-5/8 × 37-3/8 × 37-3/8

(41.3x 949.3 x 949.3

1-5/8 × 37-3/8 × 37-3/8

(41.3x 949.3 x 949.3

Air Filter

Resin Net

(with Mold Resistant)

Resin Net

(with Mold Resistant)

Resin Net

(with Mold Resistant)

Weight Lbs 11 11 11

Standard Accessories

Operation manual, Installation manual,
Paper pattern for installation, Drain
hose, Clamp metal, Washers, Sealing
pads, Clamps, Screws, Insulation for
fitting.

Operation manual, Installation manual,
Paper pattern for installation, Drain
hose, Clamp metal, Washers, Sealing
pads, Clamps, Screws, Insulation for
fitting.

Operation manual, Installation manual,
Paper pattern for installation, Drain
hose, Clamp metal, Washers, Sealing
pads, Clamps, Screws, Insulation for
fitting.

Drawing No. C:3D042686

Specifications EDUS39-600-F1_a

FXFQ-M 4

Ceiling Mounted Cassette Type (Multi-Flow)

Notes:

1. Nominal cooling capacities are based on the following conditions:
Return air temperature: 80°FDB, 67°FWB
Outdoor temperature: 95°FDB
Equivalent ref. piping length: 25 ft / 7.5 m (Horizontal)

2. Nominal heating capacities are based on the following conditions:
Return air temperature: 70°FDB.
Outdoor temperature: 47°FDB, 43°FWB
Equivalent ref. piping length: 25 ft / 7.5 m (Horizontal)

3. Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat.

4. Anechoic chamber conversion value, measured under JISB8616 conditions. During actual operation,
these values are normally somewhat higher as a result of installation conditions.

5. Refer to page 10 for Power Input.

Model FXFQ30MVJU FXFQ36MVJU

Cooling Capacity

1

Btu/h 30,000 36,000

Heating Capacity

2

Btu/h 34,000 40,000

Casing / Color Galvanized Steel Plate Galvanized Steel Plate

Dimensions: (H×W×D) in (mm) 11-3/8

× 33-1/8 × 33-1/8” (288.9 x 841.4 x 841.4 mm) 11-3/8 × 33-1/8 × 33-1/8” (288.9 x 841.4 x 841.4 mm)

Coil (Cross
Fin Coil)

Rows × Stages × FPI 2

× 12 × 17 2×12×17

Face Area ft² 5.35 5.35

Fan

Model QTS45A17M QTS45A17M

Type Turbo Fan Turbo Fan

Motor Output kW 0.09 0.09

Air Flow Rate (H/L) cfm 990/710 990/740

Drive Direct Drive Direct Drive

Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating

Sound Absorbing Thermal Insulation Material

Foamed Polystyrene /
Foamed Polyethylene

Foamed Polystyrene /
Foamed Polyethylene

Piping
Connections

Liquid Pipes in / mm φ3/8” / 9.5 mm (Flare Connection) φ3/8” / 9.5 mm (Flare Connection)

Gas Pipes in / mm φ5/8” / 15.8mm (Flare Connection) φ5/8” / 15.8mm (Flare Connection)

Drain Pipe in (mm)

VP25
External Dia. 1-1/4” (31.8mm)
Internal Dia. 1” (25.4 mm

VP25

External Dia. 1-1/4” (31.8mm)

Internal Dia. 1” (25.4 mm)

Machine Weight (Mass) Lbs 66 66

Sound Level (H/L)

4

dBA 38/32 40/33

Safety Devices Fuse, Thermal Protector for Fan Motor Fuse, Thermal Protector for Fan Motor

Refrigerant Control Electronic Expansion Valve Electronic Expansion Valve

Connectable outdoor unit R-410A Series R-410A Series

Decoration
Panels
(Option)

Model BYC125K-W1 BYC125K-W1

Color White (10Y9/0.5) White (10Y9/0.5)

Dimensions: (H × W × D) in (mm) 1-5/8

× 37-3/8 × 37-3/8” (41.3 x 949.3 x 949.3 mm) 1-5/8 × 37-3/8 × 37-3/8” (41.3 x 949.3 x 949.3 mm)

Air Filter

Resin Net

(with Mold Resistant)

Resin Net

(with Mold Resistant)

Weight Lbs 11 11

Standard Accessories

Operation manual, Installation manual, Paper pattern for
installation, Drain hose, Clamp metal, Washers, Sealing
pads, Clamps, Screws, Insulation for fitting.

Operation manual, Installation manual, Paper pattern for
installation, Drain hose, Clamp metal, Washers, Sealing
pads, Clamps, Screws, Insulation for fitting.

Drawing No. C:3D042686

EDUS39-600-F1_a Dimensions

FXFQ-M 5

3. Dimensions

FXFQ12MVJU
FXFQ18MVJU

3D042631

Dimensions EDUS39-600-F1_a

FXFQ-M 6

FXFQ24MVJU

3D042632

EDUS39-600-F1_a Dimensions

FXFQ-M 7

FXFQ30MVJU
FXFQ36MVJU

3D042633A

Piping Diagrams EDUS39-600-F1_a

FXFQ-M 8

4. Piping Diagrams

R1T : Thermistor for suction air temperature
R2T : Thermistor for liquid line temperature
R3T : Thermistor for gas line temperature

Capacity Gas Liquid

12/18 M φ1/2” (12.7 mm) φ1/4” (6.4 mm)

24/30/36 M φ5/8” (15.8 mm) φ3/8” (9.5 mm)

C:4D024460A

Heat exchanger

Gas piping connection port

Liquid piping connection port

Fan

R3T

R1T

Electronic
expansion valve

Filter Filter

R2T

EDUS39-600-F1_a Wiring Diagrams

FXFQ-M 9

5. Wiring Diagrams

FXFQ12M/18M/24M/30M/36MVJU

3D042620B

Electric Characteristics EDUS39-600-F1_a

FXFQ-M 10

6. Electric Characteristics

EDUS39-600-F1_a Capacity Tables

FXFQ-M 11

7. Capacity Tables

7.1 Cooling Capacity

FXFQ-M

TC : Total capacity ; kW
SHC : Sensible heat capacity ; kW

Refer to Outdoor Unit Capacity Tables for the actual performance data of each indoor and outdoor unit combination.

Cooling capacity

Unit size

Outdoor

air temp.

Indoor Air Temp. °FWB

61 64 67 70 72 75

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

°FDB MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh MBh

12

75 9.5 8.1 10.7 8.8 12.0 9.4 13.3 9.4 14.0 9.5 14.3 9.6
79 9.5 8.1 10.7 8.8 12.0 9.4 13.3 9.4 13.8 9.5 14.0 9.6
83 9.5 8.1 10.7 8.8 12.0 9.4 13.3 9.4 13.6 9.4 13.8 9.5
87 9.5 8.1 10.7 8.8 12.0 9.4 13.2 9.4 13.3 9.3 13.6 9.4
91 9.5 8.1 10.7 8.8 12.0 9.4 13.0 9.3 13.1 9.3 13.4 9.4
95 9.5 8.1 10.7 8.8 12.0 9.4 12.7 9.2 12.9 9.2 13.1 9.3
99 9.5 8.1 10.7 8.8 12.0 9.4 12.5 9.1 12.7 9.1 12.9 9.3

103 9.5 8.1 10.7 8.8 12.0 9.4 12.3 9.1 12.4 9.1 12.7 9.3

18

75 14.2 11.1 16.1 11.9 18.0 12.8 19.9 13.3 21.0 13.5 21.4 13.3
79 14.2 11.1 16.1 11.9 18.0 12.8 19.9 13.3 20.7 13.3 21.1 13.3
83 14.2 11.1 16.1 11.9 18.0 12.8 19.9 13.3 20.4 13.2 20.7 13.2
87 14.2 11.1 16.1 11.9 18.0 12.8 19.8 13.2 20.0 13.1 20.4 13.1
91 14.2 11.1 16.1 11.9 18.0 12.8 19.4 13.2 19.7 13.0 20.1 12.9
95 14.2 11.1 16.1 11.9 18.0 12.8 19.1 13.2 19.3 12.9 19.7 12.8
99 14.2 11.1 16.1 11.9 18.0 12.8 18.8 13.1 19.0 12.7 19.4 12.8

103 14.2 11.1 16.1 11.9 18.0 12.8 18.4 13.1 18.7 12.7 19.0 12.8

24

75 18.9 15.0 21.5 16.1 24.0 17.5 26.5 17.8 28.0 18.2 28.5 17.7
79 18.9 15.0 21.5 16.1 24.0 17.5 26.5 17.8 27.6 18.0 28.1 17.6
83 18.9 15.0 21.5 16.1 24.0 17.5 26.5 17.8 27.1 17.8 27.6 17.4
87 18.9 15.0 21.5 16.1 24.0 17.5 26.4 17.7 26.7 17.5 27.2 17.2
91 18.9 15.0 21.5 16.1 24.0 17.5 25.9 17.5 26.2 17.2 26.7 17.0
95 18.9 15.0 21.5 16.1 24.0 17.5 25.5 17.2 25.8 17.0 26.3 16.7
99 18.9 15.0 21.5 16.1 24.0 17.5 25.0 17.0 25.3 16.7 25.8 16.5

103 18.9 15.0 21.5 16.1 24.0 17.5 24.6 16.7 24.9 16.4 25.4 16.2

30

75 23.7 20.1 26.8 21.2 30.0 23.1 33.2 23.5 35.1 23.8 35.7 22.1
79 23.7 20.1 26.8 21.2 30.0 23.1 33.2 23.5 34.5 23.6 35.1 21.9
83 23.7 20.1 26.8 21.2 30.0 23.1 33.2 23.5 33.9 23.4 34.5 21.7
87 23.7 20.1 26.8 21.2 30.0 23.1 33.0 23.5 33.4 23.2 34.0 21.4
91 23.7 20.1 26.8 21.2 30.0 23.1 32.4 23.3 32.8 23.0 33.4 21.2
95 23.7 20.1 26.8 21.2 30.0 23.1 31.8 23.0 32.2 22.7 32.9 20.9
99 23.7 20.1 26.8 21.2 30.0 23.1 31.3 22.8 31.7 22.4 32.3 20.6

103 23.7 20.1 26.8 21.2 30.0 23.1 30.7 22.7 31.1 22.1 31.7 20.3

36

75 28.4 21.9 32.2 23.5 36.0 25.2 39.8 26.3 42.1 26.5 42.8 25.7
79 28.4 21.9 32.2 23.5 36.0 25.2 39.8 26.3 41.4 26.2 42.1 25.4
83 28.4 21.9 32.2 23.5 36.0 25.2 39.8 26.3 40.7 25.8 41.5 25.0
87 28.4 21.9 32.2 23.5 36.0 25.2 39.5 26.2 40.0 25.4 40.8 24.7
91 28.4 21.9 32.2 23.5 36.0 25.2 38.9 25.8 39.4 25.0 40.1 24.3
95 28.4 21.9 32.2 23.5 36.0 25.2 38.2 25.4 38.7 24.6 39.4 23.9
99 28.4 21.9 32.2 23.5 36.0 25.2 37.5 25.1 38.0 24.3 38.8 23.6

103 28.4 21.9 32.2 23.5 36.0 25.2 36.8 24.7 37.3 23.9 38.1 23.2

Capacity Tables EDUS39-600-F1_a

FXFQ-M 12

7.2 Heating Capacity

FXFQ-M

Refer to Outdoor Unit Capacity Tables for the actual performance data of each indoor and outdoor unit combination.

Heating Capacity

Indoor unit

Outdoor Air Temp.

Indoor Air Temp. °FDB

62 65 68 70 72 75

TC TC TC TC TC TC

°FDB °FWB MBh MBh MBh MBh MBh MBh

12

22.0 20.0 11.7 11.7 11.6 11.6 11.6 11.6

26.0 24.0 12.2 12.2 12.2 12.2 12.2 12.1

30.0 28.0 12.8 12.8 12.7 12.7 12.7 12.3

35.0 32.0 13.3 13.3 13.3 13.3 13.0 12.3

39.0 36.0 13.9 13.9 13.9 13.5 13.0 12.3

44.0 40.0 14.5 14.4 14.0 13.5 13.0 12.3

47.0 43.0 14.9 14.7 14.0

13.5 13.0 12.3

51.0 47.0 15.4 14.7 14.0 13.5 13.0 12.3

54.0 50.0 15.5 14.7 14.0 13.5 13.0 12.3

57.0 53.0 15.5 14.7 14.0 13.5 13.0 12.3

60.0 56.0 15.5 14.7 14.0 13.5 13.0 12.3

18

22.0 20.0 17.5 17.5 17.4 17.4 17.4 17.4

26.0 24.0 18.3 18.3 18.3 18.3 18.2 18.2

30.0 28.0 19.2 19.1 19.1 19.1 19.1 18.4

35.0 32.0 20.0 20.0 19.9 19.9 19.5 18.4

39.0 36.0 20.8 20.8 20.8 20.0 19.5 18.4

44.0 40.0 21.7 21.6 21.0 20.0 19.5 18.4

47.0 43.0 22.3 22.1 21.0

20.0 19.5 18.4

51.0 47.0 23.1 22.1 21.0 20.0 19.5 18.4

54.0 50.0 23.2 22.1 21.0 20.0 19.5 18.4

57.0 53.0 23.2 22.1 21.0 20.0 19.5 18.4

60.0 56.0 23.2 22.1 21.0 20.0 19.5 18.4

24

22.0 20.0 23.3 23.3 23.3 23.2 23.2 23.2

26.0 24.0 24.5 24.4 24.4 24.3 24.3 24.3

30.0 28.0 25.6 25.5 25.5 25.5 25.4 24.5

35.0 32.0 26.7 26.6 26.6 26.6 26.0 24.5

39.0 36.0 27.8 27.7 27.7 27.0 26.0 24.5

44.0 40.0 28.9 28.9 28.0 27.0 26.0 24.5

47.0 43.0 29.7 29.5 28.0

27.0 26.0 24.5

51.0 47.0 30.8 29.5 28.0 27.0 26.0 24.5

54.0 50.0 31.0 29.5 28.0 27.0 26.0 24.5

57.0 53.0 31.0 29.5 28.0 27.0 26.0 24.5

60.0 56.0 31.0 29.5 28.0 27.0 26.0 24.5

30

22.0 20.0 29.2 29.1 29.1 29.0 29.0 28.9

26.0 24.0 30.6 30.5 30.5 30.4 30.4 30.3

30.0 28.0 32.0 31.9 31.9 31.8 31.8 30.6

35.0 32.0 33.3 33.3 33.2 33.2 32.5 30.6

39.0 36.0 34.7 34.7 34.6 34.0 32.5 30.6

44.0 40.0 36.1 36.1 35.0 34.0 32.5 30.6

47.0 43.0 37.2 36.9 35.0

34.0 32.5 30.6

51.0 47.0 38.6 36.9 35.0 34.0 32.5 30.6

54.0 50.0 38.7 36.9 35.0 34.0 32.5 30.6

57.0 53.0 38.7 36.9 35.0 34.0 32.5 30.6

60.0 56.0 38.7 36.9 35.0 34.0 32.5 30.6

36

22.0 20.0 35.0 35.0 34.9 34.8 34.8 34.7

26.0 24.0 36.7 36.6 36.6 36.5 36.5 36.4

30.0 28.0 38.4 38.3 38.2 38.2 38.1 36.8

35.0 32.0 40.0 40.0 39.9 39.8 39.0 36.8

39.0 36.0 41.7 41.6 41.6 40.0 39.0 36.8

44.0 40.0 43.4 43.3 42.0 40.0 39.0 36.8

47.0 43.0 44.6 44.2 42.0

40.0 39.0 36.8

51.0 47.0 46.3 44.2 42.0 40.0 39.0 36.8

54.0 50.0 46.5 44.2 42.0 40.0 39.0 36.8

57.0 53.0 46.5 44.2 42.0 40.0 39.0 36.8

60.0 56.0 46.5 44.2 42.0 40.0 39.0 36.8

EDUS39-600-F1_a Air Velocity and Temperature Distributions

FXFQ-M 13

8. Air Velocity and Temperature Distributions

FXFQ12M <Cooling mode>

FXFQ12M <Heating mode>

3D052941

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

Air Velocity and Temperature Distributions EDUS39-600-F1_a

FXFQ-M 14

FXFQ18M <Cooling mode>

FXFQ18M <Heating mode>

3D052942

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

EDUS39-600-F1_a Air Velocity and Temperature Distributions

FXFQ-M 15

FXFQ24M <Cooling mode>

FXFQ24M <Heating mode>

3D052943

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

Air Velocity and Temperature Distributions EDUS39-600-F1_a

FXFQ-M 16

FXFQ30M <Cooling mode>

FXFQ30M <Heating mode>

3D052944

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

EDUS39-600-F1_a Air Velocity and Temperature Distributions

FXFQ-M 17

FXFQ36M <Cooling mode>

FXFQ36M <Heating mode>

3D052945

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

AIRFLOW DISTRIBUTIONS

TEMPERATURE DISTRIBUTIONS

Sound Levels EDUS39-600-F1_a

FXFQ-M 18

9. Sound Levels

Overall

Octave Band Level

208V~230V

 Ceiling Mounted Cassette Type (Multi Flow)

Notes:

Operation noise differs with operation and ambient
conditions.

dBA

Model 208~230V, 60Hz

HL

FXFQ12MVJU 31 28

FXFQ18MVJU 33 28

FXFQ24MVJU 34 29

FXFQ30MVJU 38 32

FXFQ36MVJU 40 33

FXFQ12MVJU FXFQ18MVJU FXFQ24MVJU

FXFQ30MVJU FXFQ36MVJU

4D052507

4D052508

4D052509

4D052510

4D052511

EDUS39-600-F1_a Installation

FXFQ-M 19

10.Installation

Center of Gravity (inches)

AB
FXFQ12, 18, 24MVJU 9-1/8 4-1/2
FXFQ30, 36MVJU 11-3/8 6-3/4

4D042639A

Installation EDUS39-600-F1_a

FXFQ-M 20

1. SAFETY CONSIDERATIONS

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.

Instruct the customer how to operate and maintain the unit.
Inform customers that they should store this Installation Man-

ual with the Operation Manual for future reference.

Always use a licensed installer or contractor to install this
product. Improper installation can result in water or refrigerant
leakage, electrical shock, fire, or explosion.

Meanings of DANGER, WARNING, CAUTION, and NOTE
symbols:

DANGER .............. Indicates an imminently hazardous

situation which, if not avoided,
results in death or serious injury.

WARNING ............ Indicates a potentially hazardous sit-

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

CAUTION ............. Indicates a potentially hazardous sit-

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

NOTE .................... Indicates situations that may result

in equipment or property-damage
accidents only.

DANGER

• Do not ground units to water pipes, telephone wires, or
lightning rods because incomplete grounding can
cause a severe shock hazard resulting in severe injury
or death. Do not ground units to gas pipes because a
gas leak can result in an explosion which could lead to
severe injury or death.

• Do not install unit in an area where flammable mate­rials are present due to risk of explosions that can
cause serious injury or death.

• Refrigerant gas is heavier than air and displaces oxy­gen. A massive leak can lead to oxygen depletion,
especially in basements, and an asphyxiation hazard
could occur leading to serious injury or death.

• If equipment utilizing a burner is used in the same
room as the air conditioner, there is danger of oxy­gen deficiency which can lead to asphyxiation
resulting in serious injury or death. Be sure to venti­late the room sufficiently to avoid this hazard.

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

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

Refrigerant gas may produce toxic gas if it comes in contact
with fire from a fan, heater, stove, cooking device, or other
heat source. Exposure to this gas can cause severe injury
or death.

• 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 do
not play with them and risk death by suffocation.

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.

• 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.

• 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.

• Check the unit stand for for damage on a continual
basis, especially if it has been used for a long time. If
left in a damanged condition the unit may fall and
cause injury.

•

Do not allow children to play on or around the unit as
they can be injured.

• Make sure that a separate power supply circuit is
provided 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 are used, and that no external forces act on the
terminal 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.

• Before touching electrical parts, turn off the unit.

• Be sure to establish a ground.

Do not ground the unit to a utility pipe, arrester, or tele­phone ground.
Incomplete ground may cause electrical shock, or

fire. A high surge current from lightning or other sources
may cause damage to the air conditioner.

• Placing a flower vase or other containers with water
or other liquids can result in a shock hazard or fire if
spilling occurs.

• Do not put a finger or other objects into the air inlet
or air outlet as the fan is rotating at a high speed and
will cause injury.

EDUS39-600-F1_a Installation

FXFQ-M 21

• Do not touch the air outlet or horizontal flaps while
the swing flap is in operation as fingers may get
caught and injured.

• Do not touch the switch with wet fingers.

Touching a switch with wet fingers can cause electric
shock.

• Be sure to install a ground leakage breaker.

Failure to install a ground leakage breaker may result in
electric shocks, or fire.

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

(a) Where a mineral oil mist or 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

produced.
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 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.

• 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 or 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

• While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent con­densation.

Improper drain piping 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 five minutes before turning off the
power. to prevent leaks or other problems. Take adequate
measures to prevent outdoor unit from being 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 wir­ing, and connecting wires at least 3.5 ft. away from tele-

visions 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 to eliminate the noise.)

• Remote controller (wireless kit) transmitting dis­tance is shorter than expected in rooms with elec­tronic fluorescent lamps

Install the indoor unit as far away from fluorescent lamps as
possible.

• Dismantling of the unit, and treatment of the refriger­ant, oil, and other parts, should be done in accorandce
with the relevant local and national regulatio

Installation EDUS39-600-F1_a

22 FXFQ-M

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,
the refrigerant piping, drain piping, and other resin
parts

.

• Be sure to check the type of R-410A 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
reaching 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 after opening, hold the unit by
the hanger brackets (× 4). Do not apply force to the refrig­erant 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

volatile 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 electro­magnetic interference.

WARNING

• Entrust installation to the place of purchase or a qualified
serviceman. Improper installation could lead to leaks 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.

CAUTION

• Do not install or operate the unit in the following areas:

• Kitchens or rooms that might be laden with mineral oil,
or filled with oil vapor or spray.

Plastic parts may deteriorate and eventually cause the unit
to fall out of place or leak.

• Where sulfurous or other corrosive gas exists.

Copper tubing and brazed spots may corrode and lead to
refrigerant leaks.

• Where machines generate electromagnetic wves and
cause the control system to malfunction.

• Where the air contrains high levels of salt as near the
ocean, and where voltage fluctuates greatly as in facto­ries, vehicles, or vessels.

• Entrust installation to the place of purchase or a qualified
serviceman. Improper installation can result in leaks or
even electric shock or fire.

• Use of unspecified parts could result in the unit falling,
leaks, or even electric shock or fire. Be sure to read this
manual before installing the indoor unit.

• Be sure to procure an air filter in the field and mount it in the
suction air passage to prevent water leaks or other prob­lems.

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 or other problems.

EDUS39-600-F1_a Installation

FXFQ-M 23

2-1 ACCESSORIES

Check the following accessories are included with your unit.

2-2 OPTIONAL ACCESSORIES

• The optional decoration panel and remote controller are
required for this indoor unit.

Ta ble 1

Ta ble 2

FOR THE FOLLOWING ITEMS, TAKE SPECIAL
CARE DURING CONSTRUCTION AND CHECK
AFTER INSTALLATION IS FINISHED.

a. Items to be checked after completion of work

b. Items to be checked at time of delivery

Also review the SAFETY CONSIDERATIONS

2-3 NOTE TO INSTALLER

• Be sure to instruct customers how to properly operate the
unit (especially cleaning filters, operating different functions,
and adjusting the temperature) by having them carry out
operations themselves while looking at the manual.

Name

1) Drain
hose

2) Metal
clamp

3) Washer for
hanger
bracket

4) Clamp

Quantity 1 pc. 1 pc. 8 pcs. 4 pcs.

Shape

Name

5) Paper
pattern for
installation

6) Screws
(M5)

7) Washer

fixing plate

Insulation for

fitting

Quantity 1 pc. 4 pcs. 4 pcs. 1 each

Shape

Also used as

packing

material

For paper

pattern for

installation

8) for gas
pipe

9) for liquid
pipe

Name Sealing pad

(Other)

Installation manual

Operation manual

Quantity 1 each 2 pcs.

Shape

10) Large

11) Medium

12) Small

Model

Optional decoration panel

Color White

FXFQ12 · 18 · 24 · 30 · 36MVJU BYC125KW1

Remote controller

Wired type BRC1D71

Items to be checked

If not properly done, what is
likely to occur.

Check

Are the indoor and outdoor
unit fixed firmly?

The units may drop, vibrate
or make noise.

Is the gas leak test fin­ished?

It may result in insufficient

cooling.
Is the unit fully insulated? Condensate water may drip.
Does drainage flow

smoothly?

Condensate water may drip.

Does the power supply volt­age correspond to that
shown on the name plate?

The unit may malfunction or

the components burn out.

Are wiring and piping cor­rect?

The unit may malfunction or

the components burn out.

Is the unit safely grounded?

Dangerous at electric leak-

age.
Is wiring size according to

specifications?

The unit may malfunction or

the components burn out.
Is something blocking the

air outlet or inlet of either
the indoor or outdoor units?

It may result in insufficient

cooling.

Are refrigerant piping length
and additional refrigerant
charge noted down?

The refrigerant charge in

the system is not clear.

Items to be checked Check

Did you explain about operations while showing the opera­tion manual to your customer?

Did you hand the operation manual over to your customer?

Installation EDUS39-600-F1_a

24 FXFQ-M

3. SELECTING INSTALLATION SITE

Attach an additional insulation pipe cover to the unit body
when it is believed that the relative humidity in the ceiling
exceeds 80%. Use glass wool, polyethylene foam, or some­thing similar with a minimum 3/8 inch thickness as insulation.

For this unit, you are able to select air flow direction.
To enable the discharge of air in 2 or 3 directions, it is neces­sary to purchase the optional blocking pad kit.

(1) Select an installation site where the following conditions

are fulfilled and that meets with your customer’s approval:

• No possible dripping of water from the refrigerant pipe,
drain pipe, or water pipe into the upper space of the
indoor unit, including the back of the ceiling.

• Optimum air distribution can be ensured.

• Nothing blocks air passage.

• Condensate can be properly drained.

• False ceiling is not noticeably on an incline.

• Sufficient clearance for maintenance and service can
be ensured.

• Piping between indoor and outdoor units is possible
within the allowable limit. Refer to the installation man­ual of the outdoor unit.

DANGER

• Do not install unit in an area where flammable materials are
present due to risk of explosion resulting in serious injury or
death.

WARNING

• If supporting structural members are not strong enough to
take the unit’s weight, the unit could fall out of place and
cause serious injury.

NOTE

• Install the indoor 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 3.5 ft. may not
be 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 as shown in the following table:

(3) Airflow direction

The below figures are approximations. Select airflow
directions best suited to the room and point of installation.
For air discharge in 2 or 3 directions, it is necessary to
make field settings by remote controller and to close the
air outlet(s). Refer to the section FIELD SETTING in the
installation manual of the optional blocking pad kit.

(4) Use suspension bolts for installation. Ensure the

ceiling is strong enough to support the weight of the
unit If any risk, reinforce the ceiling before installing
the unit.

(5) Refer to the installation pattern for instructions and to

check for points requiring reinforcing.)

(length: in.)

Number of discharge outlets used

FXFQ12M~24M

4-way air

discharge

3-way air

discharge

2-way air

discharge

Ceiling

height

Standard 8.9 9.9 11.5

Number of discharge outlets used

FXFQ30M·36M

4-way air

discharge

3-way air

discharge

2-way air

discharge

Ceiling

height

Standard 10.5 11.8 13.8

Model H
FXFQ12 · 18 · 24MVJU 9 7/16 or more
FXFQ30 · 36MVJU 11 3/4 or more

[Air flow direction]

Air discharge in

4 directions

Air discharge in

3 directions

Air discharge in

2 directions

H

H

*59
or more

*59
or more

*59
or more

*59
or more

Air
discharge

Air
discharge

39 3/8 or more

Air
inlet

Air inlet

Air discharge

Air

discharge

[Space required for installation]

NOTE) Leave 7 7/8 or more space where marked
with the *, on sides where the air outlet is closed.

EDUS39-600-F1_a Installation

FXFQ-M 25

4. PREPARATIONS BEFORE INSTALLATION

(1) Relation of ceiling opening to unit and suspension

bolt position

 Installation is possible when ceiling-opening dimensions

are as follows:

•

(2) Make the ceiling opening needed for installation

where applicable. (For existing ceilings)

• Refer to the paper pattern for ceiling opening dimen­sions.

• Create the ceiling opening required for installation.
From the side of the opening to the casing outlet, imple­ment the refrigerant, drain piping, and wiring for remote
controller (unnecessary if wireless ) and indoor-out­door unit casing outlet. Refer to each PIPING or WIR­ING section.

• After making an opening in the ceiling, it may be neces­sary to reinforce ceiling beams to keep the ceiling level
and to prevent it from vibrating. Consult the builder for
details.

(3) Install the suspension bolts using either a W3/8” or

M10 size bolt.

Use a hole-in anchor for existing ceilings, and a sunken
insert, sunken anchor, or other new ceiling parts to rein­force the ceiling to bear the weight of the unit. Adjust
clearance from the ceiling before proceeding further.

37 3/8 (Decoration panel)

34 5/8 (Ceiling opening)

33 1/16 (Indoor unit)

30 11/16 (Suspension bolt pitch)

26 3/4 (Suspension bolt pitch)

33 1/16 (Indoor unit)

34 5/8 (Ceiling opening)

37 3/8 (Decoration panel)

A

Suspension
bolt (×4)

Refrigerant
piping

False
ceiling

Hanger

bracket

[View as seen from A]

(5 7/8)

(length: in.)

  

 

 

 

 

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  

   

 






     

  





  

Ceiling material

1 3/8 or less 1 3/8 or less

NOTE) Installation is possible with a ceiling dimension of

35 13/16 (marked with *). However, to achieve a ceiling­panel overlapping dimension of 13/16, the spacing
between the ceiling and the unit should be
1 3/8 or less. If the spacing between ceiling and the unit
is over 1 3/8, attach false ceiling to part or recover
the ceiling.

(length: in.)

Ceiling slap

Anchor

Long nut or turn-buckle

Suspension bolt

False ceiling

1 15/16” ~

3 15/16”

NOTE) All the above parts are field supplied.

〈 Installation example 〉

Installation EDUS39-600-F1_a

26 FXFQ-M

5. INSTALLATION PROCEDURES FOR
FRESH AIR INTAKE DUCT CONNECTION

(1) Cut off the knockout hole on the side plate.

Then, cut the inner insulation of the hole portion.

Refer to Fig. 1

(2) Adhere the insulation to the opening of the unit. Refer

to Fig. 2

6. INDOOR UNIT INSTALLATION

Installing optional accessories (except for the decoration
panel) before installing the indoor unit is easier. However,
for existing ceilings, install fresh air inlet component kit
and branch duct before installing the unit.

(1) Install the indoor unit temporarily.

• Attach the hanger bracket to the suspension bolt. Be
sure to fix it securely by using a nut and washer from the
upper and lower sides of the hanger bracket.
The washer fixing plate ( 7) will prevent the washer from
falling.

6-1 For new ceilings

(1) Refer to the paper pattern for installation 5) for ceiling

opening dimension.
Consult the builder or carpenter for details.

• The center of the ceiling opening is indicated on the
paper pattern for installation.
The center of the unit is indicated on the label attached
to the unit and on the paper pattern for installation.

• After removing the packaging material from the 4 cor­ners of the paper pattern for installation (5), fix the
paper pattern to the unit with the 4 screws (6).

• Ceiling height is shown on the side of the paper pattern
for installation (5). Adjust the height of the unit accord­ing to this indication.

Drain pipe

Pipe

Side plate

Inner insulation

Inner
insulation

Slit

Side plate

Cut it off with cutter.

Cut it off with nipper

Fig. 1

Insulation
(field supply)

Put the insulation tightly around the hole of the unit
as shown. The ends of the side plate and the inner
insulation must be completely adhered without
leaving any clearance along the circumference of
the hole.

Inner insulation

Side plate

Edge

Insulation

Approx. 3/8”

Make sure the inner surface of insulation tightly contacts
with the inner insulation edge and the side plate.

Fig. 2

Part to be procured in the field

Washer 3) (attached)

Hanger bracket

Tighten
(double nut)

[Securing the hanger bracket]



   



  

EDUS39-600-F1_a Installation

FXFQ-M 27

Ceiling work
(2) Adjust the unit to the correct position for installation.

(Refer to Section 4. (1) PREPARATIONS BEFORE
INSTALLATION, P. 67.

(3) Make sure the unit is horizontally level.

• The indoor unit is equipped with a built-in drain
pump and float switch. At each of the unit’s 4 cor­ners, verify that it is level by using a waterlevel or a
water-filled vinyl tube.
If the unit is inclined against condensate flow, the
float switch may malfunction and cause water to
drip.

(4) Remove the washer-fixing plate (7) used for preventing

the washer from falling and tighten the upper nut.

(5) Remove the paper pattern for installation (5).

6-2 For existing ceilings

(6) Adjust the height and position of the unit.

Refer toPREPARATIONS BEFORE INSTALLATION-(1).

(7) 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 man­ual attached to the outdoor unit.

• Before refrigerant piping work, check which type of refriger­ant is used. Proper operation is not possible if the types of
refrigerant are not the same.

• The outdoor unit is charged with refrigerant.

DANGER

• 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.

NOTE

• Use a pipe cutter and flare suitable for the type of refriger­ant.

• To prevent dust, moisture or other foreign matter from infiltrat­ing the tube, either pinch the end or cover it with tape.

• Do not allow anything other than the designated refrigerant to
get mixed into the refrigerant circuit, such as air. If any refrig­erant gas leaks while working on the unit, ventilate the
room immediately. .

7-2 Connecting the refrigerant piping

• When connecting the flare nut, coat the flare both inside
and outside with ester

oil or ether oil and initially tighten by

hand 3 or 4 turns before tightening firmly.

• To prevent flare nut cracking and gas leaks, be sure to use
both a spanner and torque wrench together, as shown in the
drawing below, when connecting or disconnecting pipes to/
from the unit.

Paper pattern for
installation 5)

Center of the unit

Center of ceiling opening

Ceiling material

Lower surface
of ceiling

[Height adjustment of the unit.]

Screws 6)
(attached)

[Installation of paper pattern for installation]

Water level

Vinyl tube

Ester oil or ether oil.

Torque wrench

Spanner

Piping union

Flare nut

Installation EDUS39-600-F1_a

28 FXFQ-M

• Refer to Table 3 for the dimensions of flare nut spaces.

• Refer to Table 3 to determine the proper tightening torque.

Ta ble 3

NOTE

• Apply ester oil or ether oil around the flare portions before
connecting.

• The flare nuts used must be those included with the main
body.

• Over-tightening may damage the flare and cause a refriger­ant leakage.

Not recommended but in case of emergency

You must use a torque wrench but if not possible, you may
follow the installation method mentioned below.
After the work is finished, make sure to check that there is
no gas leak.
When you continue tightening the flare nut with a there is
a point where the tightening torque suddenly increases.
From that position, further tighten the flare nut the angle
shown below:

Ta ble 4

7-3 Piping insulation

• Execute heat insulation work completely on both sides of
the gas piping and the liquid piping. Otherwise, a water
leakage can result.

• When using a heat pump, the temperature of the gas piping
can reach up to approximately 250°F, so use insulation
which is sufficiently resistant.

• in cases where the temperature and humidity of the refrig­erant piping sections might exceed 86°F or RH80%, rein­force the refrigerant insulation. (13/16” / 17.8 mm or
thicker) Condensation may form on the surface of the insu­lating material.

• Check the pipe connector for gas leaks, then insulate it as
shown in the following drawing.

• Make absolutely sure to execute heat insulation works on the
pipe-connecting section after checking gas leakage by thor­oughly studying the following figure and using the attached
heat insulating materials for fitting. Fasten both ends with the
accessory clamps.

• Wrap the sealing pad (accessory) only around the insulation
for the joints on the gas piping side.

CAUTION

• Be sure to insulate any field piping all the way to the piping
connection inside the unit. Any exposed piping may cause
condensation or burns if touched.

7-4 Brazing refrigerant piping

• Before brazing local refrigerant piping, nitrogen gas shall be
blown through the piping to expel air from the piping.
If your brazing is done without nitrogen gas blowing, a large
amount of oxide film develops inside the piping, and could
cause system malfunction.

• When brazing the refrigerant piping, only begin brazing after
having carried out nitrogen substitution or while inserting
nitrogen into the refrigerant piping. Once this is done, con­nect the indoor unit with a 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.

DANGER

• Use of oxygen may cause an explosion resulting in serious
injury or death. Only use nitrogen gas.

NOTE

• Do not use flux when brazing refrigerant piping. Therefore,
use the phosphor copper brazing filter metal (BCuP) which
does not require flux.

8. (Flux has an extremely negative effect on refrigerant
piping systems. For instance, if chlorine based flux is
used, it will cause pipe corrosion and damage the
refrigerant oil.

Pipe

size

Tightening

torque

(ft.lbf)

Flare

dimensions

A (in.)

Flare shape (in.)

φ 1/4” 10.4 – 12.7 0.342-0.358

φ 3/8” 24.1 – 29.4 0.504-0.520

φ 1/2” 36.5 – 44.5 0.638-0.654

φ 5/8” 45.6 – 55.6 0.760-0.776

Pipe size

Further tightening

angle

Recommended arm

length of tool (in.)

φ 1/4” (6.4 mm) 60 to 90 degrees Approx. 5 7/8

φ 3/8” (9.5 mm) 60 to 90 degrees Approx. 7 7/8

φ 1/2” (12.7 mm) 30 to 60 degrees Approx. 9 13/16

φ 5/8” (15.8 mm) 30 to 60 degrees Approx. 11 13/16

A

45˚

±

2˚

R0.016-

0.031

90˚

±

0.5˚

Medium sealing
pad (attached) 11)

(Wrap the piping union
with the sealing pad.)

Clamp 4)

(×4)

Insulation for
fitting (attached) 9)
(for liquid line)

Insulation for fitting
(attached) 8)
(for gas line)

Gas piping

Liquid piping

Nitrogen

Refrigerant
piping

Part to be
brazed

Taping

Pressurereducing valve

hands
valve

Nitrogen

EDUS39-600-F1_a Installation

FXFQ-M 29

9. DRAIN PIPING WORK

Install the drain pipe as shown below and take measures
against condensation. Improperly installed piping could
lead to leaks on furniture and belongings.

(1) Install drain piping:

• The diameter of the drain pipe should be greater than or
equal to the diameter of the connecting pipe (vinyl tube;
pipe size: 1” (25.4 mm) ; outer dimension: 1 1/4” (31.7
mm). This does not apply to rises.

• Keep the drain pipe short and sloping downwards at a gra­dient of at least 1/100 to prevent air pockets from forming.

• If the drain hose cannot be sufficiently set on a slope, exe­cute the drain-raising pipe.

• To keep the drain hose from sagging, space hanging wires
every 3.28 ~ 4.92 ft . (1 ~ 1.5 m)

• Use the attached drain hose 1) and clamp metal 2).
Insert the drain hose into the drain socket, up to the white
tape. Tighten the clamp until the screw head is less than
3/16” from the hose.

• Be sure to insulate the 2 below indicated spots.
If uninsulated, there is always the possibility of con­densation forming and leaking.

• The drain piping inside the building

• Drain socket

• Wrap the attached sealing pad 10) (Large) over the clamp
and drain hose to insulate, as shown in the drawing below.

NOTE FOR DRAIN RAISING PIPING

• Install the drain raising pipes at a height of less than 21-5/
8” (549.3 mm) .

• Install the drain raising pipes at a right angle to the indoor
unit and no more than 11 13/16” (298.4 mm) from the unit.

NOTE

• The incline of attached drain hose 1) should be 2-15/16”
(71.4 mm) or less so that the drain socket does not have to
withstand additional force.

• If converging multiple drain pipes, install according to the
procedure shown below.

Select converging drain pipes whose gauge is suitable for the
operating capacity of the unit.

NOTE

• Drain piping connections should not be connected directly
to sewage pipes that smell of ammonia. The ammonia in
the sewage might enter the indoor unit through the drain
pipes and corrode the heat exchanger.

• Remember that water collecting on the drain pipe will block
it.

(2) After piping work is finished, check if drainage flows

smoothly.

• Open the water inlet lid, add approximately 37 in

3

of

water slowly and check drainage flow.

WHEN ELECTRIC WIRING WORK IS FINISHED

• Check drainage flow during COOL running, explained
under TEST OPERATION.

3.28 ~ 4.92ft.

1/100 gradient
or more

Metal clamp 2)

Drain hose 1)

Tape (White)

Metal clamp 2)
(attached)

Large sealing pad 10)
(attached)

3/16” or less

Adjustable
(21 5/8 or less)

Suspention bolt

3.28-4.92ft.

11 13/16 or less

Clamp metal (attached) 2)

29 1/2 or less

7 7/8

Drain raising pipe

Rise

Drain hose (attached) 1)

Ceiling slab

(length: in.)

Drain hose (attached) 1)

29 1/2” or less

2 15/16”
or less

3 15/16”

or more

T-joint converging drain pipes

Installation EDUS39-600-F1_a

30 FXFQ-M

WHEN ELECTRIC WIRING WORK IS NOT FINISHED

• Remove the electric parts box lids, connect a power supply
and remote controller to the terminals. Refer to HOW TO
CONNECT WIRINGS, page 12.

Next, press the inspection/test operation button “ ” on
the remote controller. The unit will engage the test opera-

tion mode. Press the operation mode selector button “ ”
until selecting FAN OPERATION “ ”. Then, press the ON/

OFF button “ ”. The indoor unit fan and drain pump will
start up. Check that the water has drained from the unit.

Press “ ” to go back to the first mode.

10. ELECTRIC WIRING WORK

10-1 GENERAL INSTRUCTIONS

• All field supplied parts, materials, and electric works must
conform to local codes.

• Use copper wire only.

• Follow the WIRING DIAGRAM attached to the unit body to
wire the outdoor unit, indoor units and the remote control­ler. For details on hooking up the remote controller, refer to
the

INSTALLATION MANUAL OF REMOTE CONTROLLER.

• All wiring must be performed by an authorized electrician.

• This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B, and so forth, and be sure the
terminal board wiring to the outdoor unit and BS unit are
properly matched. If controls wiring and piping between
the outdoor and indoor units are mismatched, a communi­cations malfunction is likely. A circuit breaker capable of
shutting down the power supply to the entire system must
be installed.

DANGER

• Do not ground units to water pipes, telephone wires, or
lightning rods because incomplete grounding could cause
a severe shock hazard resulting in severe injury or death.
Do not ground to gas pipes because a gas leak could result
in an explosion leading to severe injury or death..

10-2 ELECTRICAL CHARACTERISTICS

MCA: Min. Circuit Amps (A) MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (W) FLA: Full Load Amps (A)

10-3 SPECIFICATIONS FOR FIELD SUPPLIED

FUSES AND WIRE

Allowable length of transmission wirings and remote controller
wiring are as follows.

(1) Outdoor unit – Indoor unit:

Max. 3280 ft. / 1000 m (Total wiring length: 6560 ft. /
2000 m)
(2) Indoor unit – Remote controller:

Max. 1640 ft. / 500 m

TEST

TEST

The water inlet lid

Drain pipe

Portable pump

Inspection
opening

Service condensate outlet
(with rubber plug)
(Use this outlet to condensate
water from the drain pan)

Bucket
(Adding water from
inspection opening)

Plastic watering can
(Tube should be about
3 15/16 long.)

3 15/16 or more

〈Adding water through air discharge outlet〉

[Method of adding water]

208V–230V
Single phase

power supply
Power supply
terminal block

Indoor unit
PC board

Electric parts
box lid (1)

Electric parts
box lid (2)

Power supply
terminal block

(length: in.)

Units

Powe r
supply

Fan motor

Model Hz

Volts

Voltage

range

MCA MFA W FLA

FXFQ12MVJU

60

208-

230V

Max.

253

Min.

187

0.6 15 45 0.5
FXFQ18MVJU 0.7 15 45 0.6
FXFQ24MVJU 0.8 15 45 0.6
FXFQ30MVJU 1.2 15 90 1.0
FXFQ36MVJU 1.2 15 90 1.0

Model

Power supply wiring

Transmission

wiring

Field fuses

Size Wire Size

FXFQ12MVJU

15A

Wire size
must
comply
with local
codes.

2 conduc­tor,
stranded
copper

AWG

18

FXFQ18MVJU

FXFQ24MVJU

FXFQ30MVJU

FXFQ36MVJU

EDUS39-600-F1_a Installation

FXFQ-M 31

11. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER

11-1 HOW TO CONNECT WIRINGS

〈Methods of wiring power supply, units and connecting
remote controller wirings〉

• Power supply wiring: Remove the electric parts box lid (1)
and connect wires to the power supply terminal block (3P)
inside. In doing this, pull the wires inside through rubber
bush A and clamp the wires along with other wires using
clamp A, untightening the clip of clamp A by pressing. After
the connection, tighten clamp A as before.

• Unit wiring and remote controller wiring: Remove the elec­tric parts box lid (2) and pull the wires inside through rubber
bush B and connect to the terminal block for unit transmis­sion wirings (6P).

• After connection, attach sealing pad to prevent water from
infiltrating the unit from the outside.)

WARNING

• Never connect power supply wiring to the terminal block for
remote controller wiring as this could damage the entire
system.

• Use only specified wire and connect wires to the terminal
tightly. Be careful wires do not place external stress on ter­minals. Keep wires in neat order so as to not obstruct other
equipment. Make sure that the electric box lid fits tightly.
Incomplete connections could result in overheating and, in

NOTE

worse case, result in electric shock or fire.

• To avoid a short circuit in the electric parts box, be sure to
apply sealing material or putty (not included) to the wiring
hole to prevent the infiltration of water as well as insects or
other small creatures.

• When clamping the wires, be sure no pressure is applied to
the wire connections by using the included clamping mate­rial to make appropriate clamps. Also, when wiring, make
sure the lid on the electric parts box fits snugly by arranging
the wires neatly and attaching the electric parts box lid
firmly. 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, the wiring between
the units, and other electrical wiring do not pass through
the same locations outside of the unit, separating them by
at least 1 15/16”, otherwise electrical noise (external static)
could cause mistaken operation or breakage.

1. Use round crimp-style terminals for connecting wires
to the power supply terminal block.
If unavailable, observe the following points when wir­ing.

• Do not connect wires of different gauge to the same

power supply 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 terminal. (Tightening
torque: 0.97ft.lbf ±10 %)

Clamp A

Grounding
terminal

Power supply terminal
block (3P)

Electric parts box lid (1)

Electric wiring
diagram label

Electric parts box lid (2)

Terminal board
for transmission
wiring (6P)

Rubber
bush B

Rubber
bush A

Conduit
mounting
plate

Conduit

Lock nut

Rubber bush A

Rubber
bush

Wrap pad tightly enough
to prevent gapping.

Sealing pad (Small)

(Wrap around the wire)

(Inside)

(Outside)

Field wiring

〈NOTES〉

• If using 2 or more wires, break the small
sealing pad (Small) and wrap each wire.

Be sure to attach it to prevent the infiltration
of water as well as any insects and other
small creatures from outside.
Otherwise a short-circuit may occur inside
the electric parts box.

L1 L2

Clamp A

Clip

Power
supply

Power supply
terminal block (3P)

Electric wire

Round crimp-style terminal

Attach insulation sleeve

Connect wires of
the same gauge to
both sides.

Installation EDUS39-600-F1_a

32 FXFQ-M

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
of the screw might be damaged, and the screw will not
be properly tightened.

• If the terminal screws are tightened too hard, screws
might be damaged.

• Refer to the table below for the tightening torque of the
terminal screws.

3. Do not connect wires of different gauge to the same
grounding terminal. Looseness in the connection may
deteriorate protection.

4. Outside of the unit, keep transmission wiring at least
1 15/16” (46 mm) away from power supply wiring. The
equipment may malfunction if subjected to electrical
(external) noise.

5. For remote controller wiring, refer to the INSTALLATION
MANUAL OF REMOTE CONTROLLER attached to the
remote controller.

11-2 WIRING EXAMPLE

• Fit the power supply wiring of each unit with a switch and
fuse as shown in the drawing.

COMPLETE SYSTEM EXAMPLE

1. When using 1 remote controller for 1 indoor unit.
(Normal operation)

2. For group control or use with 2 remote controllers

NOTE

1. A single switch can be used to supply power to units on
the same system. However, branch switches and branch
circuit breakers must be selected carefully.

2. Do not ground the equipment on gas pipes, water pipes or
lightning rods, or crossground with telephones. Improper
grounding could result in electric shock.

11-3 CONTROLLING 1 INDOOR UNIT USING 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 driver into the recess between the upper

and lower part of remote controller and, working from the
2 positions, pry off the upper part.
The remote controller PC board is attached to the upper
part of remote controller.

(2) Turn the MAIN/SUB changeover switch on one of the two

remote controller PC boards to S.
Leave the switch of the other remote controller set to M. .

Terminal Size

Tightening torque

(ft.lbf)

Terminal block for remote controller (6P) M3.5 0.58 – 0.72

Power supply terminal block

M4 0.87 – 1.06

Power supply

Main
switch

Outdoor unit

Power supply wiring

Transmission wiring

Switch

Fuse

Indoor unit

Remote controller

L1L

2

IN/D OUT/D

F

1 F2 F1 F2

P1P

2

P1P

2

F1F2T1T

2

P1P2F1F2T1T

2

P1P2F1F2T1T

2

P1P2F1F2T1T

2

P1P

2

P1P

2

P1P

2

Power supply

208-230V

60Hz~

L1L

2

Power supply

208-230V

60Hz~

L1L

2

Power supply

208-230V

60Hz~

L1L

2

Power supply

208-230V

60Hz~

No. 1
System

Control box

Most
downstream
indoor unit

Outdoor unit

Indoor unit A

Remote

controller

Remote

controller

Remote
controller

Remote
controlle

r

Indoor unit B Indoor unit C

L1L

2

L1L

2

L1L

2

L1L

2

P1P

2

P1P

2

For use with
2 remote
controllers

L1L2

IN/D OUT/D

F

1 F2 F1 F2

P1P

2

P1P

2

F1F2T1T

2

P1P2F1F2T1T

2

P1P2F1F2T1T

2

P1P2F1F2T1T

2

ower supply

208-230V

60Hz~

L1L2

Power supply

208-230V

60Hz~

L1L2

Power supply

208-230V

60Hz~

L1L2

Power supply

208-230V

60Hz~

No. 2
System

Control box

Most
downstream
indoor unit

Outdoor unit

Indoor unit A Indoor unit B Indoor unit C

L1L

2

L1L

2

L1L

2

VL

2

Remote

controller

Upper part of
remote controller

Lower part of
remote controller

Insert the screwdriver here and
gently work off the upper part of
remote controller

S

M

S

S

M

Remote controller
PC board

(Factory setting)

Only one remote
controller needs to be
changed if factory
settings have remained
untouched.

EDUS39-600-F1_a Installation

FXFQ-M 33

11-4 COMPUTERIZED CONTROL: FORCED OFF

AND ON/OFF OPERATION

1. Wire specifications and how to perform wiring

• Connect the input from outside to terminals T1 and T2
of the terminal block for remote controller.

2. Actuation

• The following table explains FORCED OFF and ON/
OFF OPERATIONS in response to Input A. The T1-T2
terminals are standard on all Daikin indoor units and
allow for remote starting and stopping of equipment.
Individual indoor units can be field prgrammed at the
remote controller to change the T1-T2 sequence of
operation of the equipment based upon the application.

3. How to select FORCED OFF and ON/OFF OPERATION

• Turn the power on and then use the remote controller to
select operation. These codes are programmed at the
remote controller. Individual unit groups can be pro­grammed independently.

11-5 CENTRALIZED CONTROL

• For centralized control, it is necessary to designate the
group number. For details, refer to the manual of each
optional controller for centralized control.

11-6 SETTING AIR FILTER SIGN

• Remote controllers are equipped with air-filter 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 to [01] for filter contam­ination-light.

•

.

Table 5

When using wireless remote controllers

• When using wireless remote controllers, address setting is
necessary. Refer to the installation manual attached to the
wireless remote controller for setting instructions.

Wire specification 2-conductor, stranded, non-shielded cop-

per cable / PVC or vinyl jacket

Gauge AWG 18

Length Max. 328 ft. (1000 m)

External terminal

Contact that can ensure the minimum
applicable load of 15 V DC, 10 mA.

FORCED OFF (Manual Restart)

Mode No. 12
First Code No. 1
Second Code No. 01

DEFAULT SETTING

ON/OFF OPERATION

Mode No. 12
First Code No. 1
Second Code No. 02

Input A OFF (Open Circuit)

An open circuit between termi­nals T1 and T2 allows the unit to
run normally.

Input A OFF (Open Circuit)

An open circuit between termi­nals T1 and T2 prevents unit
operation.

Input A ON (Closed Circuit)

Closing the normally open cir­cuit between terminals T1 and
T2 stops operation of the unit.
When T1-T2 is opened, the unit
must be restarted with the
remote controller.

.

Input A ON (Closed Circuit)

A closed circuit between termi­nals T1 and T2 allows normal
operation of the unit.

  




 

Setting

Spacing time of

display air

filter sign

(long life type)

Mode

No.

FIRST
CODE

NO.

SECOND

CODE NO.

Air filter

contamination-

light

Approx. 2500 hrs

10

(20)

0

01

Air filter

contamination-

heavy

Approx. 1250 hrs 02

Installation EDUS39-600-F1_a

FXFQ-M 34

12. FIELD SETTING

Make sure the terminal box lids are closed on the indoor
and outdoor units.
Field setting must be made from the remote controller in
accordance with the installation condition.

• Setting can be made by changing the MODE NO., , FIRST
CODE NO., and SECOND CODE NO.

• For setting and operation, refer to the FIELD SETTING in
the installation manual of the remote controller

• Set the remote controller to the field set mode. For
details, refer to HOW TO SET IN THE FIELD in the
remote controller manual.

• When in the field set mode, select mode No. 12, then
set the first code (switch) No. to [1]. Then set second
code (position) No. to [01] for FORCED OFF and [02]
for ON/OFF OPERATION. (FORCED OFF is factory
setting.)

13. INSTALLATION OF THE DECORATION
PANEL

Refer to the installation manual attached to the decoration
panel.
After installing the decoration panel, ensure that there is no
space between the unit body and decoration panel.

14. TEST OPERATION

Refer to the installation manual of the outdoor unit.

• The operation lamp of the remote controller will flash when
a malfunction occurs. Check the malfunction code on the
liquid crystal display to identify the point of trouble. An
explanation of malfunction codes and the corresponding
trouble is provided in CAUTION 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 6



 


 

 



 

Remote control display Content

CONCENTRATED MAN-

AGEMENT is lit

• There is a short circuit at the
FORCED OFF terminals (T1, T2)

U3 is lit

• The check operation has not per­formed on outdoor unit P.C.B.

U4 is lit
UH is lit

• The power on the outdoor unit is off.

• The outdoor unit has not been wired
for power supply.

• Incorrect wiring for the transmission
wiring and / or FORCED OFF wiring.

No display

• The power on the indoor unit is off.

• The indoor unit has not been wired
for power supply.

• Incorrect wiring for the remote con­troller wiring, the transmission wiring
and / or the FORCED OFF wiring.

EDUS39-600-F1_a Accessories

FXFQ-M 35

11.Accessories

Standard Accessories

Optional Accessories (For Unit)

C : 3D043021

Optional Assessories for Controls can be found in the Controller Manual.

No.

Type

FXFQ12MVJU FXFQ18MVJU FXFQ24MVJU FXFQ30MVJU FXFQ36MVJU

Item

1 Decoration Panel BYC125K-W1

2

Filter
related

High efficiency filter
65%

KAFP552H80 KAFP552H160

High efficiency filter
90%

KAFP553H80 KAFP553H160

Filter chamber for
above

KDDFP55D160

Ultra-long life filter KAFP55D160

Long life
replacement
filter

Non­woven
type

KAFJ551K160

3 Fresh air intake kit KDDJ55X160

4 Panel spacer KDBP55H160WA

Accessories EDUS39-600-F1_a

FXFQ-M 36

Aug. 2009

AMERICAS

1645 Wallace Drive, Suite 110

Carrollton, TX75006

[email protected]

www.daikinac.com

EDUS39-600-F1_a
Printed in U.S.A. 08/2009