4 InstallationInstallation manual10EHVZ04~16S18CB3VDaikin Altherma – Low temperature split4P401672-1D – 2017.04# At the indoor unit In the room1 Connect the user interface cable to the indoor unit.Fix the cable with cable ties to the cable tie mountings.X5MA5PA2P A2Pa b1 2a Main user interface(a)b Optional user interface2 Insert a screwdriver into the slots underneath the userinterface and carefully separate the faceplate from thewallplate.The PCB is mounted in the faceplate of the user interface.Be careful NOT to damage it.3 Use the 2 screws in the accessorybag to fix the wallplate of the userinterface to the sheet metal of theunit.Be careful NOT to distort the shapeof the backside of the user interfaceby overtightening the mountingscrews.Fix the wallplate ofthe user interface tothe wall.4 Connect as shown in 4A. Connect as shownin 4A, 4B, 4C or 4D.5 Reinstall the faceplate onto the wallplate.Be careful NOT to pinch the wiring when attaching thefrontplate to the unit.(a) The main user interface is required for operation, but has tobe ordered separately (mandatory option).4A From the rearb aPCB1× 4B From the leftaPCBb1×4C From the topabPCBb1× 4D From the top centreaPCBbb1×a Notch this part for the wiring to pass through with nippersetc.b Secure the wiring to the front part of the casing using thewiring retainer and clamp.4.5.6 To connect the shut-off valve1 Connect the valve control cable to the appropriate terminals asshown in the illustration below.NOTICEWiring is different for a NC (normal closed) valve and a NO(normal open) valve.X2MX1MK3MK2MX2MX1MK3MK2M5 6 7M2S5 6 7M2SNO NC2 Fix the cable with cable ties to the cable tie mountings.4.5.7 To connect the electrical metersINFORMATIONIn case of an electrical meter with transistor output, checkthe polarity. The positive polarity MUST be connected toX5M/7 and X5M/9; the negative polarity to X5M/8 andX5M/10.1 Connect the electrical meters cable to the appropriate terminalsas shown in the illustration below.