Daikin EKMBUHCA3V3 Installation Manual

Also see for EKMBUHCA3V3: Installer's reference guide Service manual User reference guide User reference guide Installer's reference guide

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Daikin EKMBUHCA3V3 Installation Manual Manual pdf 5 page image

4 InstallationInstallation manual5EKMBUHCA3V3 + EKMBUHCA9W1Daikin Altherma low temperature monobloc backup heater4P405547-1C – 2015.08INFORMATIONInside the backup heater, an automatic air purge valve isinstalled. For the location of this valve, refer to the"Technical data" chapter of the installer reference guide.For instructions on how to perform an air purge, refer to the"Commissioning" chapter of the installation manual of theoutdoor unit.4.4 Connecting the electrical wiringDANGER: RISK OF ELECTROCUTIONWARNINGALWAYS use multicore cable for power supply cables.4.4.1 To connect the electrical wiring on thebackup heaterRouting Possible cables (depends on the installed options)aLow voltage▪ Backup heater kit thermistor (interconnection withcontrol box EKCB07CAV3)▪ Backup heater kit thermal protector (interconnectionwith control box EKCB07CAV3)▪ Backup heater kit connection (to control boxEKCB07CAV3)bHighvoltage▪ Main power supply1 Insert the wiring from the bottom of the backup heater.2 Inside the backup heater, route the wiring as follows:Backup heatertypeRouting*3Va ba Low voltage wiringb High voltage wiring*9Wa ba Low voltage wiringb High voltage wiring3 Fix the wiring with cable ties to the cable tie mountings.NOTICEThe distance between the high voltage and low voltagecables should be at least 25 mm.4.4.2 To connect the backup heater powersupplyCAUTIONTo guarantee the unit is completely earthed, alwaysconnect the backup heater power supply and the earthcable.CAUTIONIf a tank with a built‑in electrical booster heater (EKHW) ispart of the system, use a dedicated power circuit for thebackup heater and booster heater. NEVER use a powercircuit shared by another appliance. This power circuitmust be protected with the required safety devicesaccording to the applicable legislation.Depending on the model, the backup heater capacity can vary. Makesure that the power supply is in accordance with the backup heatercapacity, as listed in the table below.Backupheater typeBackupheatercapacityPowersupplyMaximumrunningcurrentZmax(Ω)*3V 3 kW 1~ 230 V 13 A —*9W 3 kW 1~ 230 V 13 A —6 kW 1~ 230 V 26 A(a)(b) —6 kW 3N~ 400 V 8.6 A —9 kW 3N~ 400 V 13 A —(a) Equipment complying with EN/IEC 61000-3-12 (European/International Technical Standard setting the limits forharmonic currents produced by equipment connected topublic low-voltage systems with input current >16 A and≤75 A per phase.).(b) This equipment complies with EN/IEC 61000‑3‑11(European/International Technical Standard setting thelimits for voltage changes, voltage fluctuations and flicker inpublic low-voltage supply systems for equipment with ratedcurrent ≤75 A) provided that the system impedance Zsys isless than or equal to Zmax at the interface point between theuser's supply and the public system. It is the responsibilityof the installer or user of the equipment to ensure, byconsultation with the distribution network operator ifnecessary, that the equipment is connected only to asupply with a system impedance Zsys less than or equal toZmax.1 Connect the backup heater power supply. For *3V models, adouble‑pole fuse is used for F1B. For *9W models, a 4‑polefuse is used for F1B.2 If required, modify the connection on terminal X14M.Backup heatertypeConnections tobackup heater powersupplyConnections toterminals3 kW 1~ 230 V(*3V)L NL NF1B—

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