2Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.• Always disconnect the air conditioner from the power supply before servicing it or accessingits internal components.• Verify that installation and testing operations are performed by qualified personnel.• Verify that the air conditioner is not installed in an easily accessible area.General information Carefully read the content of this manual before installing the air conditioner and store the manual in a safe place in order to be ableto use it as reference after installation. For maximum safety, installers should always carefully read the following warnings. Store the operation and installation manual in a safe location and remember to hand it over to the new owner if the air conditioner issold or transferred. This manual explains how to install an indoor unit with a split system with two SAMSUNG units. The use of other types of units withdifferent control systems may damage the units and invalidate the warranty. The manufacturer shall not be responsible for damagesarising from the use of non compliant units. The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection ofelectric and requirements set forth in the “Operating limits” table, included in the manual, shall immediately invalidate the warranty. The air conditioner should be used only for the applications for which it has been designed: the indoor unit is not suitable to beinstalled in areas used for laundry. Do not use the units if damaged. If problems occur, switch the unit off and disconnect it from the power supply. In order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch and contact SAMSUNG’stechnical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very noisy. Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly. These operations should beperformed by qualified personnel only. The unit contains moving parts, which should always be kept out of the reach of children. Do not attempt to repair, move, alter or reinstall the unit. If performed by unauthorized personnel, these operations may causeelectric shocks or fires. Do not place containers with liquids or other objects on the unit. All the materials used for the manufacture and packaging of the air conditioner are recyclable. The packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with current laws. The air conditioner contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle, the air conditionermust be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly and safely.WARNINGSafety precautions .............................................................................................................................................................................................................. 2Preparation for installation ............................................................................................................................................................................................ 4Deciding on where to install the indoor unit ........................................................................................................................................................ 5Indoor unit installation .................................................................................................................................................................................................. 12Purging the unit ................................................................................................................................................................................................................ 13Connecting the refrigerant pipe ............................................................................................................................................................................... 14Cutting/Flaring the pipes ............................................................................................................................................................................................. 15Performing leak test & insulation ............................................................................................................................................................................. 16Drainpipe and drain hose installation .................................................................................................................................................................... 18Installing DPM...................................................................................................................................................................................................................... 19Interface module Installation (Optional) ............................................................................................................................................................... 20Connecting the connection cord ............................................................................................................................................................................. 21Adjusting air flow ............................................................................................................................................................................................................... 22Easy Tuning .......................................................................................................................................................................................................................... 25Setting the indoor unit option code ......................................................................................................................................................................... 26Setting an indoor unit address and installation option ................................................................................................................................... 27Troubleshooting ............................................................................................................................................................................................................... 30How to connect your extended power cables ..................................................................................................................................................... 32ContentsSafety precautions