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9

9. ELECTRIC WIRING WORK

9-1 GENERAL INSTRUCTIONS

Shut off the power before doing any work.

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

Use copper wire only.

See also the “Wiring Diagram plate” attached to the control 
box lid when laying electrical wiring.

For details on hooking up the remote controller, refer to the 
“REMOTE CONTROLLER INSTALLATION MANUAL”.

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 be sure the terminal board 
wiring to the outdoor unit and BS unit are properly matched. If 
wiring and piping between the outdoor unit and an indoor unit 
are mismatched, the system may cause a malfunction.

A circuit breaker capable of shutting down power supply to 
the entire system must be installed.

Refer to the installation manual attached to the outdoor unit 
for the size of power supply wiring connected to the outdoor 
unit, the capacity of the circuit breaker and switch, and wiring 
instructions.

Be sure to ground the air conditioner.

Do not the earth wire should come in contact with gas pipes, 
water pipes, lightning rods, or telephone earth wires.

Gas pipes: gas leaks can cause explosions and fire.

Water pipes: they cannot be grounded if hard vinyl pipes

are used.

Telephone earth wire and lightning rods: the ground 
potential when struck by lightning gets extremely high.

To avoid short circuiting the power supply wire, be sure to 
use insulated terminals.

Do not turn on the power supply (circuit breaker or earth leak-
age breaker) until all other work is done.

9-2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES 

AND WIRE

Power-related

NOTES

1. Shows only in case of protected pipes. Use H07RN-F in 

case of no protection.

2. Insulated thickness : 1mm or more.

3. If the wiring is in a place where people it can be easily 

touched by people, install an earth leakage breaker to pre-

vent electric shock.

4. When using an earth leakage breaker, make sure to select 

one useful also to protection against overcurrent and short-

circuit.

When using an earth leakage breaker only for earth device, 

make sure to use a wiring interrupter together.

The length of the transmission wiring and remote controller 

wiring are as follows.

Length of the transmission wiring and remote controller wiring

9-3 ELECTRICAL CHARACTERISTICS

MCA: Minimum Circuit Amps (A)  MFA:Max. Fuse Amps (A)

KW:  Fan motor output (kW)

FLA:Full Load Amps (A)

Model

Power supply wiring (including earth wire)

Number 

of units

Field 

fuses 

Wire

Size

15 · 20 · 25 · 32  type

1

16 A

H05VV-U3G

(NOTE 1)

Size must  
comply with 
local codes.

40 · 50  type
63  type

Model

Transmission wiring

Remote controller wiring

Wire

Size (mm

2

)

15 · 20 · 25 · 32 type

Sheathed vinyl cord 
or cable (2 wires) (NOTE 2)

0.75 - 1.25

40 · 50  type
63  type

Outdoor unit – Indoor unit

Max. 1000m

(Total wiring length: 2000m)

Indoor unit –  Remote controller

Max. 500m

Units

Power supply

Fan motor

Model

Hz Volts

Voltage 
range

MCA

MFA

KW

FLA

15 · 20 · 25 · 32

50

220-

240

Min. 

198

  Max.  

264

0.4

16

0.036

0.3

40 

0.5

0.038

0.4

50

0.5

0.038

0.4

63

0.6

0.060

0.5

15 · 20 · 25 · 32 

60

220

Min. 

198

  Max.  

242

0.4

16

0.036

0.3

40

0.5

0.038

0.4

50

0.5

0.038

0.4

63

0.6

0.060

0.5

Summary of Contents for FXDQ15A2VEB

Page 1: ...INSTALLATION MANUAL FXDQ15A2VEB FXDQ20A2VEB FXDQ25A2VEB FXDQ32A2VEB FXDQ40A2VEB FXDQ50A2VEB FXDQ63A2VEB System Inverter Air Conditioners...

Page 2: ...es valorado positivamente por B de acuerdo con el Certificado C 06 Nota delineato nel A e giudicato positivamente da B secondo il Certificato C 07 A B C 08 Nota tal como estabelecido em A e com o par...

Page 3: ...n work after taking into account strong winds typhoons or earthquakes Failure to do so during installation work may result in the unit falling and causing accidents Make sure that a separate power sup...

Page 4: ...ng hold the unit by the hanger brackets Do not apply force to the refrigerant piping drain piping or flange parts Be sure to check the type of R410A refrigerant to be used before installing the unit U...

Page 5: ...be shortened Indoor units should be installed as far away from fluores cent lighting as possible 2 Use suspension bolts for installation Check whether the ceiling is strong enough to support the weig...

Page 6: ...inforce the ceiling frame to prevent shaking Consult an architect or carpenter for details 4 Install the suspension bolts Use W3 8 to M10 suspension bolts Use a hole in anchor for existing ceilings an...

Page 7: ...ion environment If the tempera ture above the ceiling might reach 30 C or the humidity RH80 Condensation may form on the surface of the insu lation CAUTION Follow the points at below Use a pipe cutter...

Page 8: ...the refrigerant pipe joints Use phosphor copper brazer BCuP 2 JIS Z 3264 B Cu93P 710 795 ISO 3677 which does not require flux Using a flux containing chlorine may cause the piping to corrode Using a...

Page 9: ...300mm from the unit Refer to Fig 13 PRECAUTIONS Drain piping connections Do not connect the drain piping directly to sewage pipes that smell of ammonia The ammonia in the sewage might enter the indoo...

Page 10: ...ide flange and duct connection area with aluminum tape or something similar to prevent air escaping CAUTION When attaching a duct to the intake side be sure to attach an air filter inside the air pass...

Page 11: ...to use insulated terminals Do not turn on the power supply circuit breaker or earth leak age breaker until all other work is done 9 2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES AND WIRE Power related NOT...

Page 12: ...circumstances connect the power sup ply wiring to the remote controller or transmission wiring terminal block Doing so can destroy the entire system Connecting electrical wiring remote controller wir...

Page 13: ...ler for 1 indoor unit No 2 system For group control or use with 2 remote controllers Terminal block Tightening torque N m Remote controller transmission wiring terminal block 6P 0 79 0 97 Power supply...

Page 14: ...LECTRIC WIRING WORK 3 Remove the control box lid 4 Add remote controller 2 SUB to the terminal block for remote controller P1 P2 in the control box There is no polarity L N F F1 2 F F1 2 F F1 2 F F1 2...

Page 15: ...OFF operation should be selected by selecting the SECOND CODE NO as shown in the table below The SECOND CODE NO is set to 01 when shipped Input A of forced off and ON OFF operation work as shown in th...

Page 16: ...If the display shows any of the following there is a possi bility that the wiring was done incorrectly or that the power is not on so check again CAUTION Always stop the test run using the remote con...

Page 17: ...NNECTOR FOR OPTIONAL PARTS X24A CONNECTOR WIRELESSREMOTE CONTROLLER X33A CONNECTOR ADAPTOR FOR WIRING X35A CONNECTOR POWER SUPPLY CONNECTOR X38A CONNECTOR MULTI TENANT WIRED REMOTE CONTROLLER R1T THER...

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Page 20: ...4P325876 1 2012 07 Copyright 2012 Daikin...

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