Daikin Altherma EHVZ04S18CB Installer's Reference Manual

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Daikin Altherma EHVZ04S18CB Installer's Reference Manual Manual pdf 36 page image

7 InstallationInstaller reference guide36ERLQ004~008CA + EHVZ04+08S18CBDaikin Altherma – Low temperature split4P401676-1D – 2018.07Legend: see illustration below.In case of preferential kWh rate power supplyConnect X6Y to X6YB.X2MX5MA5P X1MK3MK2M1 2 31 2 3X6YBX6YX1AL NL N30 31S1S3 4 X19Aabca Interconnection cable (=main power supply)b Normal kWh rate power supplyc Preferential power supply contact2 Fix the cables with cable ties to the cable tie mountings.INFORMATIONIn case of preferential kWh rate power supply, connectX6Y to X6YB. The necessity of separate normal kWh ratepower supply to indoor unit (b) X2M/30+31 depends on thetype of preferential kWh rate power supply.Separate connection to the indoor unit is required:▪ if preferential kWh rate power supply is interruptedwhen active, OR▪ if no power consumption of the indoor unit is allowed atthe preferential kWh rate power supply when active.INFORMATIONThe preferential kWh rate power supply contact isconnected to the same terminals (X5M/3+4) as the safetythermostat for the additional zone. It is only possible for thesystem to have EITHER preferential kWh rate powersupply OR a safety thermostat for the additional zone.7.9.8 To connect the backup heater powersupplyCAUTIONTo guarantee the unit is completely earthed, alwaysconnect the backup heater power supply and the earthcable.Make sure that the power supply is in accordance with the backupheater capacity, as listed in the table below.Backupheater typeBackupheatercapacityPowersupplyMaximumrunningcurrentZmax(Ω)*3V 3 kW 1~ 230 V 13 A —1 Connect the backup heater power supply. A double‑pole fuse isused for F1B.Backup heater type Connections to backup heater powersupply3 kW 1~ 230 V (*3V)X2MF1BX1ML NL N2 Fix the cable with cable ties to the cable tie mountings.7.9.9 To connect the user interface▪ If you use 1 user interface, you can install it at the indoor unit (forcontrol close to the indoor unit), or in the room (when used asroom thermostat).▪ If you use 2 user interfaces, you can install 1 user interface at theindoor unit (for control close to the indoor unit) + 1 user interfacein the room (used as room thermostat).INFORMATIONThe user interface can only be used as room thermostat ofthe main zone.The procedure differs slightly depending on where you install theuser interface.