Daikin FDA125A5VEB Installer And User Reference Manual

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Table of ContentsInstaller and user reference guide2FDA125A5VEBSplit system air conditioners4P495031-1A – 2019.03Table of Contents1 General safety precautions 21.1 About the documentation .......................................................... 21.1.1 Meaning of warnings and symbols.............................. 31.2 For the user ............................................................................... 31.3 For the installer.......................................................................... 31.3.1 General ....................................................................... 31.3.2 Installation site ............................................................ 41.3.3 Refrigerant .................................................................. 51.3.4 Brine............................................................................ 61.3.5 Water .......................................................................... 61.3.6 Electrical ..................................................................... 62 About the documentation 72.1 About this document.................................................................. 7For the installer 73 About the box 73.1 Overview: About the box ........................................................... 73.2 Indoor unit ................................................................................. 73.2.1 To unpack and handle the unit.................................... 73.2.2 To remove the accessories from the indoor unit......... 84 About the units and options 84.1 Overview: About the units and options...................................... 84.2 System layout............................................................................ 84.3 Combining units and options ..................................................... 84.3.1 Possible options for the indoor unit............................. 85 Preparation 85.1 Overview: Preparation............................................................... 85.2 Preparing the installation site .................................................... 85.2.1 Installation site requirements of the indoor unit .......... 85.3 Preparing refrigerant piping....................................................... 95.3.1 Refrigerant piping requirements.................................. 95.3.2 Refrigerant piping insulation ....................................... 105.4 Preparing electrical wiring ......................................................... 105.4.1 About preparing electrical wiring................................. 106 Installation 106.1 Overview: Installation ................................................................ 106.2 Mounting the indoor unit............................................................ 106.2.1 Precautions when mounting the indoor unit................ 106.2.2 Guidelines when installing the indoor unit................... 106.2.3 Guidelines when installing the ducting........................ 126.2.4 Guidelines when installing the drain piping................. 126.3 Connecting the refrigerant piping .............................................. 146.3.1 About connecting the refrigerant piping ...................... 146.3.2 Precautions when connecting the refrigerant piping ... 146.3.3 Guidelines when connecting the refrigerant piping ..... 146.3.4 Pipe bending guidelines.............................................. 146.3.5 To flare the pipe end ................................................... 156.3.6 To connect the refrigerant piping to the indoor unit .... 156.4 Connecting the electrical wiring................................................. 156.4.1 About connecting the electrical wiring......................... 156.4.2 Precautions when connecting the electrical wiring ..... 156.4.3 Guidelines when connecting the electrical wiring ....... 166.4.4 Specifications of standard wiring components............ 166.4.5 To connect the electrical wiring on the indoor unit...... 167 Configuration 177.1 Field settings ............................................................................. 178 Commissioning 188.1 Overview: Commissioning......................................................... 188.2 Checklist before commissioning................................................ 188.3 To perform a test run.................................................................. 188.4 Error codes when performing a test run ..................................... 199 Hand-over to the user 1910 Disposal 2011 Technical data 2011.1 Wiring diagram ........................................................................... 2011.1.1 Unified wiring diagram legend...................................... 20For the user 2112 About the system 2112.1 Components ............................................................................... 2112.2 Information requirements for fan coil units ................................. 2213 User interface 2214 Before operation 2215 Operation 2215.1 Operation range ......................................................................... 2215.2 Operation procedure .................................................................. 2316 Energy saving and optimum operation 2317 Maintenance and service 2317.1 Overview: Maintenance and service .......................................... 2317.2 Cleaning the air filter, suction grille, air outlet and outsidepanels......................................................................................... 2417.2.1 To clean the air outlet and outside panels ................... 2417.2.2 To clean the air filter .................................................... 2417.3 Maintenance before a long stop period ...................................... 2517.4 Maintenance after a long stop period ......................................... 2518 Troubleshooting 2518.1 Symptoms that are NOT system malfunctions ........................... 2618.1.1 Symptom: The system does not operate ..................... 2618.1.2 Symptom: Air blow direction is not as specified........... 2618.1.3 Symptom: White mist comes out of a unit (Indoorunit) .............................................................................. 2618.1.4 Symptom: Noise of air conditioners (indoor unit) ......... 2618.1.5 Symptom: Dust comes out of the unit .......................... 2618.1.6 Symptom: The units can give off odours...................... 2618.1.7 Symptom: The display shows "88"............................... 2718.1.8 Symptom: The operation stopped suddenly(Operation lamp is on) ................................................. 2718.1.9 Symptom: The outdoor fan rotates while the airconditioner is not in operation ...................................... 2718.1.10 Symptom: The heating operation stops suddenly anda flowing sound is heard .............................................. 2719 Relocation 2720 Disposal 2721 Glossary 271 General safety precautions1.1 About the documentation▪ The original documentation is written in English. All otherlanguages are translations.▪ The precautions described in this document cover very importanttopics, follow them carefully.▪ The installation of the system, and all activities described in theinstallation manual and the installer reference guide MUST beperformed by an authorised installer.