Daikin RWEYQ8T9Y1B Installer And User Manual

Also see for RWEYQ10T9Y1B: Installation and operation manual Installer and user reference guide Installation and operation manual

7 ConfigurationInstaller and user reference guide35RWEYQ8~14T9V1B + RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1 – 2017.04The control line of the valve/pump should be connected to the X2Mconnector in the electrical switchbox. To connect the valve/pump tothe outdoor unit, also provide a separate 12 V DC power supply(with an output power of at least 50 mW) to the X2M connector.Connect the valve/pump to: X2M terminals 2 and 3.Connect the power source to X2M terminals 1 and 3 (respect thepolarity).BLKINTERLOCK TW1IN TW2OUTWHTBLUBLUBLUYLWORGREDBRN+ –1 2 3 4 5 6 7 8 9 10X2M+– 2~10 V DC12 V DCabX2Ma Valve/pumpb Power supplyNOTICEMake sure to connect a flow switch to your water-cooledVRV IV system. Running the system with a flow rate belowthe minimum requirement can result in damage of thesystem.InterlockIt is mandatory to connect a flow switch to the interlock circuit of theoutdoor unit. Running the system with a flow rate below theminimum requirement can result in damage of the system. The flowswitch should be installed in the main water circuit between the plateheat exchanger and the closed valve. Select a flow switch contact ofat least 15 V DC, 1 mA.Connect the flow switch to: X2M terminals 5 and 6.In case of a multi outdoor unit system, install one or more flowswitches depending on the installation of the water system so thatwater flow is guaranteed under every condition.NOTICEIf the flow switch is installed in a variable water flowsystem, take into account the inertia of the water flow. If avariable water flow system is used, the flow switch controlshould be linked to the compressor operation using themultifunction output terminal "b".Failure to do so will result in unintended "forced thermo off"conditions.Example:X3MX3MYLWabcdeORGREDBRNBLUBLUWHTWHTBLKBLKBLKTW1IN TW2OUTWHTBLUBLUBLUYLWORGREDBRN010+ -1 2 3 4 5 6 7 8 9 10 X2MbaX2Ma Relay (normally closed) (field supply)b Flow switch (field supply)Multifunction outputsTo monitor the outdoor unit operation or trigger field suppliedequipment connected to the outdoor unit, this RWEYQ*T9, series isequipped with 5 output contacts.General contact specifications: 220 V AC, 3 mA-0.5 mA.To connect these output signals, choose the applicable contacts inthe X3M terminal in the table below:X3MX3MYLWabcdeORGREDBRNBLUBLUWHTWHTBLKBLKTerminal Functiona Error on remote controllerb Compressor operationc Heating operationd Cooling operatione Water pump operation request7 Configuration7.1 Overview: ConfigurationThis chapter describes what you have to do and know to configurethe system after it is installed.It contains information about:▪ Making field settings▪ Energy saving and optimum operation▪ Using the leak detection functionINFORMATIONIt is important that all information in this chapter is readsequentially by the installer and that the system isconfigured as applicable.DANGER: RISK OF ELECTROCUTION7.2 Making field settings7.2.1 About making field settingsTo continue the configuration of the VRV IV heat recovery system, itis required to give some input to the PCB of the unit. This chapterwill describe how manual input is possible by operating the pushbuttons on the PCB and reading the feedback from the 7‑segmentdisplays.Making settings is done via the master outdoor unit.Next to making field settings it is also possible to confirm the currentoperation parameters of the unit.Push buttonsPerforming special actions (automatic refrigerant charge, test run,etc.) and making field settings (demand operation, low noise, etc.)happens by way of operating the push buttons.See also: