Daikin FHQ35CAVEB Installation Manual

Also see for FHQ100CAVEB: Service manual Service manual Installation manual Operation manual

Contents

Daikin FHQ35CAVEB Installation Manual Manual pdf 12 page image

11 English• Make sure to earth the air conditioner.Earthing resistance should be according to applicable legis-lation.• Do not connect the earth wiring to gas or water piping, light-ning conductor or telephone earth wiring.• Gas piping ............Ignition or explosion may occur if thegas leaks.• Water piping .........Hard vinyl tubes are not effectiveearths.• Lightning conductor or telephone earth wiring..................Electric potential may rise abnormally if struck by a light-ning bolt.• For electric wiring work, refer to also the “WIRING DIA-GRAM” attached to the control box lid.• Never connect the power supply wiring to the terminal blockfor remote controller wiring, or otherwise the entire systemmay be damaged.• Carry out installation and wiring of the remote controlleraccording to the “installation manual” attached to the remotecontroller.• Do not touch the Printed Circuit Board assy during the wiringwork. Otherwise, it may cause damage.8-2 SPECIFICATIONS FOR FIELD WIRINGFor the wiring of outdoor units, refer to the installation manualattached 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 whendoing group control.Wiring specifications are shown on the condition that the wiringhas a voltage drop of 2%.1.It shows the case when conduit piping are used. When theconduit piping are not used, use H07RN-F.2.Sheathed vinyl cord or cable (insulation thickness: 1mm ormore)9. HOW TO CONNECT WIRINGS AND WIR-ING EXAMPLEWiring connection methodCaution for wiring• The indoor units in the same system can be connected to thepower supply from one branch switch. However, selection ofbranch switch, branch over current circuit breaker and wiringsize must be according to applicable legislation.• For connection to the terminal block, use ring type crimp styleterminals with insulation sleeve or treat the wiring with insu-lation.• If the above is not available, make sure to observe the follow-ing items.• 2 wirings of different sizes to the terminal block for powersupply is prohibited.(Abnormal heating may occur if the wirings are not tightenedsecurely.)• Use the required wirings, connect them securely and fixthese wirings so that external force may not apply to the ter-minals.• Use a proper screw driver for tightening the terminal screws.If an improper screw driver is used, it may damage the screwhead and a proper tightening cannot be carried out.• If a terminal is over tightened, it may be damaged. Refer tothe table shown below for tightening torque of terminals.• Conduct wiring so that the earth lead comes out from thenotched part of the cup washer. (Otherwise, earth lead con-tact will be insufficient and grounding effect may be lost.)• Do not carry out soldering finish when stranded wirings areused.9-1 CONNECTION OF TRANSMISSION WIRING,EARTH WIRING AND FOR THE REMOTE CON-TROLLER WIRING(1) Loosen the fixing screws (2 pcs.) while holding the controlbox 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) accessory to the terminal block (X2M: 3P) while match-ing up the numbers (1 to 3), and then connect the earth wir-ing to the earth terminal.After this is done, use the wiring fixture (11) and clamp (4)attached to bind the wiring without applying tension to theconnecting section of the wirings.Wire Size (mm 2) LengthTransmission wiring H05VV-U4G(NOTE 1) 2.5 –Remote controllerwiringVinyl cord withsheath or cable(2 wire) (NOTE 2)0.75 - 1.25 Max.500m*Insulation sleeveRing type crimpstyle terminalsWiringTightening torque (N·m)Terminal block for remote controllerand transmission wiring 0.88 ± 0.08Terminal block for power supply 1.47 ± 0.14Earth terminal 1.69 ± 0.25Connection of 2wirings of same sizemust be carried outon both sides.Connection ofwirings of differentsizes is prohibited.Connection of 2wirings on one sideis prohibited.Notched partRing type crimp style terminalsCup washer