Samsung AR TXHZ Series Installation Manual

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26Installation Inspection and TestingEnglishInstallationStep 4-4 Adding refrigerant (if needed)The outdoor unit is charged with sufficient R-32 refrigerant tosupport up to a 5 m line set. For lengths greater than 5 m,you must add 15 g of refrigerant per meter of additionallength, after the lines are evacuated.1 Calculate the additional refrigerant required:Additional grams of R-32 = (Total line set meter − 5) × 152 Connect the common hose of the manifold gauge set tothe inverted R-32 refrigerant cylinder.3 Place the refrigerant cylinder on a scale set to measuregrams.4 Open the valve on the tank.5 At the manifold connection, bleed the refrigerant toremove any air that may be present in the common hose.6 Open the gauge manifold and charge the system with theamount of refrigerant calculated in step 1.7 Close the gauge manifold valve, close the valve on therefrigerant tank, and remove the common hose.Precautions on adding the R-32 refrigerantIn addition to the conventional charging procedure, thefollowing requirements shall be kept.• Make sure that contamination by other refrigerantsdoes not occur for charging.• To minimize the amount of refrigerant, keep the hosesand lines as short as possible.• The cylinders shall be kept upright.• Make sure that the refrigeration system is earthedbefore charging.• Label the system after charging, if necessary.• Extreme care is required not to overcharge the system.• Before recharging, the pressure shall be checked withnitrogen blowing.• After charging, check for leakage before commissioning.• Be sure to check for leakage before leaving the workarea.Step 4-5 Important information:regulation regarding the refrigerant usedThis product contains fluorinated greenhouse gases. Do notvent gases into the atmosphere.CAUTION• Inform user if the system contains 5 tCO₂e or more offluorinated greenhouse gases. In this case, it must bechecked for leakage at least once every 12 months,according to regulation No. 517/2014. This activity mustbe covered by qualified personnel only. In the case ofthe situation above, the installer (or authorized personwith responsibility for final check) must provide amaintenance book, with all the information recorded,according to REGULATION (EU) No. 517/2014 OF THEEUROPEAN PARLIAMENT AND OF THE COUNCIL of 16April 2014 on fluorinated greenhouse gases.1 Please fill in the following with indelible ink on therefrigerant charge label supplied with this product and onthis manual.‐ the factory refrigerant charge of the product,‐ the additional refrigerant amount charged inthe field and‐ + the total refrigerant charge. on therefrigerant charge label supplied with the product.Refrigerant type GWP valueR-32 675• GWP: Global Warming Potential• Calculating tCO₂e: kg x GWP/1000Indoor unitOutdoor unitUnit Kg tCO₂e①, a②, b①+②, c