Daikin VRV III REMQ72PBYD Engineering Data

Installation EDUS391004-N62 Installation of Outdoor UnitsBeforehand, check the remaining refrigerant that is needed tocharge based on the “additional charging amount” in step 2 andthe charged amount in step 3.• The refrigerant will be charged about 66 lb in one hour at outdoortemp. 86°F DB (about 26 lb at outdoor temp. 32°F DB).• During Automatic refrigerant charging operation, you can stop theoperation forcedly by pushing MODE button (BS1).(Refer to figure 31)1. Measuring device2. R410A tank (with siphon)3. Charge hose4. Gas pipe shutoff valve5. Liquid pipe shutoff valve6. Refrigerant charge port7. Valve A8. Valve B9. Valve C10. Outdoor unit A11. Outdoor unit B12. Outdoor unit C13. Indoor unit14. Field pipings15. Refrigerant flow when charging16. Shutoff valve17. Service port18. The refrigerant will be charged about 66 lb in one hour atoutdoor temp. 86°FDB (26 lb at 32°FDB). (According tooutdoor temp. or the refrigerant amount in the tank, thecharging rate may speed up). If you need to speed up incase of multi system, connect the refrigerant tanks to eachoutdoor unit.[Automatic refrigerant charging operation procedure]NOTE• The marks of LED mean as follows.h : OFF i : ON j : Blinking  : OFF, ON or Blinking(1) Open the liquid pipe and gas pipe shutoff valves. (The valve A~Cmust be closed. See figure 31.)(2)  Close the electrical components box (1) lid and all front panelexcept on the electrical components box (1) side. (*1) And turnthe power to the outdoor unit and all connected indoor units. (*2)• After H2P stop blinking (about 12 minutes after turning on thepower), check H2P is OFF.If H2P is ON, check the malfunction code in the remote controllerof indoor unit and correct the malfunction in accordance with[Remote controller display malfunction code] in chapter 11-2-2.(3) Check the LED. And push the MODE button (BS1) once if the LEDdisplays is not as below.(4) Push the TEST button (BS4) once. (The LED displays will changeas below.)(5) Hold the TEST button (BS4) down for 5 seconds or more.(The LED displays will change as below and fan of outdoor unit willstart rotation.)(6) When the compressor start working and the LED displays changeany state in below (*3), go to “In case of cooling mode” or “In caseof heating mode” in accordance with the LED displays.In case of cooling mode(7) Push the TEST button (BS4) once within 5 minutes afterprocedure (5) (*4) and close the all front panels (*5).After that, open the valve A immediately (See figure 31) (*6) andwatch the remote controller display of indoor unit.(8) If the remote controller display shows “PE” code (*7), ready to close thevalve A.And go to procedure (9).If the remote controller display shows other code, close the valve Aimmediately and refer to [Remote controller cooling mode malfunctioncode]Beware the fan running when open the front panel.The fan may continue rotation after the system stop the operation.(9) When the compressor stop working (the fan may continuerotation.), close the valve A immediately (*8).And check the LED displays are as below and the remotecontroller display shows “P9” code.After checking, push the MODE button (BS1) once and thecharging is complete.In case of heating mode(7) Push the TEST button (BS4) once within 5 minutes afterprocedure (5) (*4) and close the all front panels.After that, open the valve A immediately (See figure 31) (*6) andcheck the charged amount by measuring device.During operation, if the remote controller display shows “P2” or“P8” code, close the valve A immediately and refer to [Remotecontroller heating mode malfunction code].Beware the fan running when open the front panel.The fan may continue rotation after the system stop the operation.(8) When the required amount of refrigerant is charged, close thevalve A (See figure 30) (*8) and push the RETURN button (BS3)once. And then go to procedure (9).(9) Push the MODE button (BS1) once, and the charging is complete.Notes (*1)~(*8)(*1) Lead the refrigerant charge hose etc from the pipe intake.All front panels must be closed at the procedure (7).(*2)  If you perform the refrigerant charging operation within therefrigerant system that have the power off unit, the operationcannot finish properly.Check the number of outdoor and indoor units that is powered.For checking, see [How to check how many units are connected]in chapter 11-1.• To energize the crankcase heater, make sure to turn on for6 hours before starting operation.(*3) It takes about 2~10 minutes for getting stability of refrigerantstate.If the additional refrigerant is little and operation is started beforegetting stability, the system can not judge the charging amountprecisely and it cause over charge.(*4) If the TEST button (BS4) is not pushed within 5 minutes, “P2”code will displayed in the remote controller. In this case, refer[Remote controller cooling (or heating) mode malfunction code].(*5) If the front panel is opened during the operation, the systemcannot operate properly.(*6) If you leave the system without connecting the refrigerant tank oropening the valve A for 30 minutes or more, the system stopoperation and “P2” code are displayed in remote controller.In this case, refer [Remote controller cooling (or heating) modemalfunction code].(*7) Depending on the situation of operation such as the chargingamount is little, the “PE” code may not be displayed and the “P9”code may be displayed.(*8) Always close the valve A and take the tank off.The refrigerant charge port of this unit have electric expansionvalve and the valve are closed when charging is finished.However, the valve will opened when other operation (Checkoperation, normal operation, etc.). If you leave the tankconnected, the refrigerant will charged and it cause over charge.H1P H2P H3P H4P H5P H6P H7Ph h i h h h hH1P H2P H3P H4P H5P H6P H7Pi i i i i i iH1P H2P H3P H4P H5P H6P H7Ph j h h h  H1P H2P H3P H4P H5P H6P H7Pj j j h i h i Go to “In case ofcooling mode”j j h h i h i Go to “In case ofheating mode”H1P H2P H3P H4P H5P H6P H7Pi j j i i i i3P215731-10R