Daikin R32 Split Series Installer's Reference Manual

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Daikin R32 Split Series Installer's Reference Manual Manual pdf 19 page image

6 InstallationInstaller reference guide192(A)MXM40+50M(3)(4)V1B(9)_2(A)MXF40+50A2V1BR32 Split series4P600463-2 – 2019.10Typical workflowConnecting the electrical wiring typically consists of the followingstages:1 Making sure the power supply system complies with theelectrical specifications of the units.2 Connecting the electrical wiring to the outdoor unit.3 Connecting the electrical wiring to the indoor unit.4 Connecting the main power supply.6.7.2 Precautions when connecting theelectrical wiringINFORMATIONAlso read the precautions and requirements in thefollowing chapters:▪ General safety precautions▪ PreparationINFORMATIONAppliance shall be installed in accordance with nationalwiring regulations.DANGER: RISK OF ELECTROCUTIONWARNINGALWAYS use multicore cable for power supply cables.WARNINGUse an all-pole disconnection type breaker with at least3 mm between the contact point gaps that provide fulldisconnection under overvoltage category III.WARNINGIf the supply cord is damaged, it MUST be replaced by themanufacturer, its service agent or similarly qualifiedpersons in order to avoid a hazard.WARNINGDo NOT connect the power supply to the indoor unit. Thiscould result in electrical shock or fire.WARNING▪ Do NOT use locally purchased electrical parts insidethe product.▪ Do NOT branch the power supply for the drain pump,etc. from the terminal block. This could result inelectrical shock or fire.WARNINGKeep the interconnection wiring away from copper pipeswithout thermal insulation as such pipes will be very hot.DANGER: RISK OF ELECTROCUTIONAll electrical parts (including thermistors) are powered bythe power supply. Do not touch them with bare hands.DANGER: RISK OF ELECTROCUTIONDisconnect the power supply for more than 10 minutes,and measure the voltage at the terminals of main circuitcapacitors or electrical components before servicing. Thevoltage MUST be less than 50 V DC before you can touchelectrical components. For the location of the terminals,see the wiring diagram.ACDCDC-+efghija bkcdla DB1 diode bridgeb S90 thermistor lead wirec LED Ad S40 thermal overload relay lead wiree S20 (white) room A electronic expansion valve coilf S21 (red) room B electronic expansion valve coilg S80 (white) 4-way valve lead wire connectorh S70 fan motor lead wirei S99 heating lockj S91 (red) liquid thermistor lead wirek S92 (white)gas thermistor lead wirel Multimeter (DC voltage range)6.7.3 Guidelines when connecting the electricalwiringKeep the following in mind:▪ If stranded conductor wires are used, install a round crimp-styleterminal on the end of the wire. Place the round crimp-styleterminal on the wire up to the covered part and fasten the terminalwith the appropriate tool.b aa Stranded conductor wireb Round crimp-style terminal▪ Use the following methods for installing wires:Wire type Installation methodSingle-core wirec bcaaA AA´A´a Curled single-core wireb Screwc Flat washerStranded conductorwire with roundcrimp-style terminalc b ba caBBa Terminalb Screwc Flat washerO AllowedX NOT allowed