Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

12 About the units and optionsInstallation and operation manual13RXYTQVRV IV+ heat pump for high ambient temperatures4P546223-1C – 2021.11NOTICEIf the unit is operated with the transportation stay attached,abnormal vibration or noise may be generated.The transportation stay installed over the compressor leg forprotecting the unit during transport must be removed. Proceed asshown in the figure and procedure below.1 Slightly loosen the fixing nut.2 Remove the transportation stay as shown in the figure below.3 Tighten the fixing nut again.13 (12.3 N·m)213 (12.3 N·m)2 aba Fixing nutb Transportation stay12 About the units and options12.1 About the outdoor unitThis installation manual concerns the VRV IV, full inverter driven,heat pump system.Model line up:Model DescriptionRXYTQ8~16 Single non-continuous heating model.RXYTQ18~48 Multi non-continuous heating model(consisting of 2 or 3 RXYTQ modules).These units are intended for outdoor installation and aimed for heatpump air to air applications.These units have (in single use) heating capacities ranging from 25to 50 kW and cooling capacities rating from 22.4 to 45 kW. In multicombination the heating capacity can go up till 150 kW and incooling till 135 kW.The outdoor unit is designed to work in heating mode at ambienttemperatures from –20°C WB to 15.5°C WB and in cooling mode atambient temperatures from –5°C DB to 52°C DB.Unit weightsModel Total net weight (kg) Total gross weight (kg)RXYTQ8 198 211RXYTQ10 234 251RXYTQ12 234 251RXYTQ14 283 300RXYTQ16 283 30012.2 System layoutNOTICEDesign of the system must not be done at temperaturesbelow –15°C.edc cbf aa VRV IV Heat pump outdoor unitb Refrigerant pipingc VRV direct expansion (DX) indoor unitd User interface (dedicated depending on indoor unit type)e User interface (wireless, dedicated depending on indoorunit type)f Cool/Heat changeover remote control switch13 Unit installation13.1 Opening the unit13.1.1 To open the outdoor unitDANGER: RISK OF ELECTROCUTIONDANGER: RISK OF BURNING/SCALDING14×14×8 HP 10~16 HPOnce the front plates open, the electrical component box can beaccessed. See "13.1.2 To open the electrical component box of theoutdoor unit" [413].For service purposes, the pushbuttons on the main PCB need to beaccessed. To access these pushbuttons, the electrical componentbox cover does not need to be opened. See "16.1.3 To access thefield setting components" [429].13.1.2 To open the electrical component box ofthe outdoor unitNOTICEDo NOT apply excessive force when opening theelectronic component box cover. Excessive force candeform the cover, resulting in entering of water to causeequipment failure.