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8. ELECTRIC WIRING WORK

8-1 GENERAL INSTRUCTIONS

Make certain that all electric wiring work is carried out by qualified personnel according to the applicable 
legislation and this installation manual, using a separate circuit. Insufficient capacity of the power supply cir-
cuit or improper electrical construction may lead to electric shocks or a fire.

Make sure to install an earth leakage breaker in accordance with applicable legislation. Failure to do so may 
cause electrical shock and a fire.

Do not turn on the power supply (of the indoor unit) until all the installation work is completed.

Make sure to earth the air conditioner.
Earthing resistance should be according to applicable legislation.

Do not connect the earth wiring to gas or water piping, lightning conductor or telephone earth wiring.

Gas piping ..... Ignition or explosion may occur if the gas leaks.

Water piping ..... Hard vinyl tubes are not effective earths.

Lightning conductor or telephone earth wiring ......Electric potential may rise abnormally if struck by a 

lightning bolt.

For electric wiring work, refer to also the “WIRING DIAGRAM” attached to the control box lid.

Never connect the power supply wiring to the terminal block for remote controller wiring, or otherwise the 
entire system may be damaged.

Carry out installation and wiring of the remote controller according to the “installation manual” attached to 
the remote controller.

Do not touch the Printed Circuit Board assy during the wiring work. Otherwise, it may cause damage.

8-2 SPECIFICATIONS FOR FIELD WIRING

For the wiring of outdoor units, refer to the installation manual attached to the outdoor units.

Remote controller and transmission wiring are field supply. 

(Refer to Table 3)

Table 3

* This will be the total extended length in the system when doing group control.
Wiring specifications are shown on the condition that the wiring has a voltage drop of 2%.

1. It shows the case when conduit piping are used. When the conduit piping are not used, use H07RN-F.

2. Sheathed vinyl cord or cable (insulation thickness: 1mm or more)

9. HOW TO CONNECT WIRINGS AND WIRING EXAMPLE

Wiring connection method

〈〈

Caution for wiring

〉〉

The indoor units in the same system can be connected to the power supply from one branch switch. How-
ever, selection of branch switch, branch over current circuit breaker and wiring size must be according to 
applicable legislation.

For connection to the terminal block, use ring type crimp style terminals with insulation sleeve or treat the 
wiring with insulation.

Wire

Size (mm

2

)

Length

Transmission wiring

H05VV-U4G

(NOTE 1)

2.5

Remote controller wiring

Vinyl cord with sheath or cable (2 wire)

(NOTE 2)

0.75 - 1.25

Max. 500m*

Insulation sleeve

Ring type crimp style terminals

Wiring

01_EN_3P249378-6L.fm  Page 18  Sunday, September 30, 2012  2:30 PM

Summary of Contents for FHQ35CAVEB

Page 1: ...EA DETENIDAMENTE ESTAS INSTRUCCIONES ANTES DE LA INSTALACI N CONSERVE ESTE MANUAL PARA POSIBLES CONSULTAS FUTURAS PRIMA DELL INSTALLAZIONE LEGGERE ATTENTAMENTE LE PRESENTI ISTRUZIONI CONSERVARE IL PRE...

Page 2: ...lt in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices Afte...

Page 3: ...ontrol box lid is not in place overheat of the terminals electric shocks or a fire may be caused If refrigerant gas leaks during installation work ventilate the area immediately Toxic gas may be produ...

Page 4: ...r conditioner while looking at the manual Instruct the customer how to operate the air conditioner particularly cleaning of the air filters operation pro cedures and temperature adjustment For selecti...

Page 5: ...hat stated in the manufacturer s label on the air conditioner Does not operate burnout Are you sure that there is no wrong wiring or piping or no loose wiring Does not operate burnout Is earthing comp...

Page 6: ...1 meter away from televisions or radios to prevent image interference or noise Depending on the radio waves a distance of 1 meter may not be sufficient to eliminate the noise Install the indoor unit...

Page 7: ...324 270 375 398 377 260 Type 60 71 1270 1230 533 479 425 530 553 532 415 Type 100 125 140 1590 1550 693 639 585 690 713 692 575 Fig 3 F 690 Unit dimension 210 D C A Unit dimension B Hanging bolt pitc...

Page 8: ...hole at the wiring inlet side at the rear surface or top surface and install the attached resin bushing 10 3 Remove the hanger Loosen 2 bolts for installing the hanger at both sides M8 4 places at le...

Page 9: ...R UNIT It is easy to attach the optional parts before installing the indoor unit Refer to also the installation manual attached to the optional parts For installation use the attached installation par...

Page 10: ...ly attached the hanging bolts may come off from the hanger A When the drain piping is tilted to the right or to the right and back Place it level or tilt it slightly to the right or the back Within 1...

Page 11: ...ith ether oil or ester oil Use only the flare nuts attached to the air conditioner If other flare nuts are used it may cause refrigerant leakage To prevent contamination or moisture from getting into...

Page 12: ...htened as instructed it may cause slow refrigerant leak and result in mal function such as does not cool or heat Table 2 CAUTION Insulation of field piping must be carried out up to the connection ins...

Page 13: ...material unit side Do not leave clearance Wrap from the root of the unit Sealing material Small 9 accessory Bring the seam to the top Flare nut connection Piping insulating material field supply For...

Page 14: ...Refer to Fig 18 Open the knockout hole at the decoration side panel right and connect piping Refer to Fig 18 Top panel penetration cover Cut at the position avoiding the knob part of the penetration...

Page 15: ...3264 B Cu93P 710 795 ISO 3677 that does not require flux If chlorinated flux is used the piping will be corroded and in addition if fluorine is contained the refrigerant oil will be deteriorated and...

Page 16: ...aken to remove it Refer to Fig 22 Select the piping diameter equal to or larger than that of the drain hose 1 accessory polyvinyl chlo ride piping nominal diameter 20mm outside diameter 26mm Install t...

Page 17: ...It may cause abnormal noise such as bubbling noise If the drain hose 1 is deflected it may damage the suction grille Install supports at a distance of 1 to 1 5m so that the piping may not deflect Refe...

Page 18: ...in pump kit 2 After piping is finished check if the drain flows smoothly Gradually put about 0 6 liter of water for drain confirmation into the drain pan from the air outlet Refer to Fig 29 After the...

Page 19: ...lation and wiring of the remote controller according to the installation manual attached to the remote controller Do not touch the Printed Circuit Board assy during the wiring work Otherwise it may ca...

Page 20: ...lid and then remove the control box lid 2 Cut off the knockout hole and put the resin bushing 10 accessory on the back side sheet metal 3 Connect the transmission wiring through the resin bushing 10 a...

Page 21: ...tdoor and indoor units must be matched Transmission wiring connection method Remote controller wiring connection method no polarity Wiring penetration hole Rear piping penetration cover Remote control...

Page 22: ...is to avoid electric shocks or a fire For the wiring of outdoor units refer to the installation manual attached to the outdoor units Confirm the sys tem type Pair type 1 remote controller controls 1...

Page 23: ...ls refer to the technical documents NOTE Terminal numbers of outdoor and indoor units must be matched P1P2 1 2 3 P1P2 1 2 3 Power supply 220 240V 50Hz Earth leakage breaker Outdoor unit NOTE 1 Indoor...

Page 24: ...control box lid Refer to 9 HOW TO CONNECT WIRINGS AND WIRING EXAMPLE 2 Connect crossover wiring between the terminals P1 P2 inside the control box for the remote controller There is no polarity Refer...

Page 25: ...units must be matched P1 P2 P1P2 P1P2 1 2 3 1 2 3 NOTE Outdoor unit Indoor unit Remote controller Optional accessory Remote controller Optional accessory Control with 2 remote controllers control Eart...

Page 26: ...s shown by in the table indicate those when shipped from the factory The method of setting procedure and operation is shown in the installation manual attached to the remote controller Note Though set...

Page 27: ...ime can be shortened depending on the environment Table 5 Use No indication setting when cleaning indication is not necessary such as the case of periodical clean ing being carried out 11 5 SETTING FA...

Page 28: ...the slave unit 5 Turn on the main power supply switch again and as in 1 change the SECOND CODE No to 02 indi vidual setting 6 Perform field setting Refer to 11 1 to 11 4 for the slave unit 7 Turn off...

Page 29: ...re that airflow direction and fan speed can be obtained according to the set tings If interior work is still unfinished when test operation finishes explain to the customer that the air cond tioner mu...

Page 30: ...ress the PROGRAMMING TIME button and find the unit No which stopped due to trouble Number of beeps 3 short beeps Perform all the following operations 1 short beep Perform 3 and 6 1 long beep No troubl...

Page 31: ...een indoor Printed Circuit Board Master and indoor Printed Circuit Board Slave C4 Indoor heat exchanger liquid pipe temperature sensor malfunction Abnormal stop is applied depending on the model or co...

Page 32: ...unit J6 Outdoor heat exchanger distributor liquid piping thermistor malfunction Outdoor unit Abnormal stop is applied depending on the model or condition J7 Outdoor heat exchanger condenser evaporator...

Page 33: ...Capacity setting adapter or capacity data error or disconnection of the capacity setting adapter failure to connect the adapter or the capacity is not set to the data retention IC U0 Suction piping t...

Page 34: ...4 7 WIRED REMOTE CONTROLLER OPTIONAL ACCESSORY NOTE 7 8 WIRELESS REMOTE CONTROLLER RECEIVER DISPLAY UNIT OPTIONAL ACCESSORY 9 IN CASE OF SIMULTANEOUS OPERA TION SYSTEM NOTE 6 10 INDOOR UNIT MASTER 11...

Page 35: ...LY 3 FOR THE DETAIL SEE WIRING DIAGRAM ATTACHED TO OUTDOOR UNIT 4 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IN TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 5 X15A X25A ARE CON...

Page 36: ...1209 HT 3P249378 6L EM12A008 00_CV_3P249378 6L fm Page 2 Sunday September 30 2012 5 07 PM...

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