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•Thepipewillbeinsulatedandfixedpermanentlyintopositionafterfinishingtheinstallationandthegasleaktest; refer to page 38 for further details. Purging the indoor unit . Nitrogen gas is not injected into this product. 1. Unscrew the caps at the end of each pipe. Unscrew the caps Pipes •TheremainingairintheRefrigerationcycle,whichcontainsmoisture, may cause malfunction on the compressor. •Alwayscontacttheservicecenteroraprofessionalinstallationagencyfor product installation. •Topreventdirtorforeignsubstancesfromgettingintothepipesduringinstallation, do NOT remove the caps completely until you are ready to connect the pipes. Cutting or extending the pipe The length of the pipe can be: • Extended up to : see table page 24 • Shorten up to: see page 24 ENGLISH Ifyouneedapipelongerthan5meters: •Youmustextendtheassemblycable. •Youmustaddrefrigeranttothepipes;otherwise,theindoorunitmayfreeze. 31 Cutting or extending the pipe 1. Make sure that you have all the required tools (pipe cutter, reamer, flaring tool and pipe holder). 2. If you want to shorten the pipe, cut it using a pipe cutter, ensuring that the cut edge remains at 90° with the side of the pipe (see below examples of correct and incorrect cut edges). Oblique Rough Burr Pipe cutter Pipe 3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer. •Facethepipedownwhileremovingtheburrstomakesurethatburrsdonotgetintothepipe. 4. Put a flare nut slightly into the pipe and modify the flare. Pipe Flare Outer Diameter (D) o6.35 mm Depth (A) 1.3 mm Flaring Size (B) 9.0 mm o9.52 mm 1.8 mm 13.0 mm o12.70 mm 2.0 mm 16.2 mm o15.88 mm 2.2 mm 19.3 mm o19.05 mm 2.2 mm 22.5 mm o22.23 mm 2.2 mm 25.7 mm 5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below). Correct Inclined Damaged Cracked Uneven Surface Thickness 6. Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench, applying the following torque: Outer Diameter Torque (kgf•cm) o6.35 mm 140~170 o9.52 mm 250 ~280 o12.70 mm 380~420 o15.88 mm 440~480 o19.05 mm 990~1210 o22.23 mm 990~1210 Indoor outlet pipe Connecting pipe Flare nut •Excessivetorquecanbecauseofgasleakage.Incasebrazingthepipe,thenitrogengasmustbeblownintothepipe (50 Pa). The joint must be accessible and serviceable. 7. For further details on how to connect to the outdoor unit and purge the air, refer to page 35~37. •Tightentheflarenutwithtorquewrenchaccordingtospecifiedmethod. If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage. Installing and connecting the drain hose of the indoor unit When installing the drain hose for the indoor unit, check if condensation draining is adequate. When passing the drain hose through the 65-mm hole drilled in the wall, check the followings: ENGLISH Wall Indoor unit Drain hose The drain hose must NOT The end of the drain hose must NOT slant upwards. be placed under water. 5cm less Ditch The drain hose must not Keep a clearance of at least Do not place the end of the be bent. 5cm between the end of the drain hose in a hollow. drain hose and the ground. Drain hose installation 1. If necessary, connect the 2-meter extension drain hose to the drain hose. 2. If you use the extension drain hose, insulate the inside of the extension drain hose with a shield. 3. Fit the drain hose into 1 of 2 drain hose holes, then fix the end of the drain hose tightly with a clamp. •Ifyoudonotusetheotherdrainhosehole, block it with a rubber stopper. Drain hose hole 4. When extending the Drain Hose, hold the end of Drain Hose and Extended Hose, rotate and insert the drain hose into Extended hose for 15~20 mm. Make sure the two hoses are firmly connected, there is no water leakage. 5. Connect the Drain Hose after using Foam Insulation to wrap the Extended Hose. Then, Use vinyl tape to wrap the each side of connection by 20mm . Drain hose Extension drain hose Drain hose Extension drain hose 15~20 mm Foam Insulation 20mm or more 20mm or more Vinyl Tape 6. Pass the drain hose under the refrigerant pipe, keeping the drain Shield hose tight. 7. Pass the drain hose through the hole in the wall. Check if it slants downwards as seen in the picture. Extension drain hose 8. Using natural drainage method, check the drainage is normal. Drain hose 33 34 Installing and connecting the drain hose of the indoor unit • Make sure the indoor unit is in upright position when you pour water to check for leakage. Make sure that the water does not overflow onto the electrical part. Change the direction only when it is necessary. 1. Detach the rubber cap with the plier. 2. Detach the drain hose by pulling it and turning to the left. 3. Insert the drain hose by fixing it with the screw into the groove of the drain hose and the outlet of the drain pan. 4. Attach the rubber cap with a screwdriver by turning it to the right until it fixes to the end of the groove. 5. Check for leakage on both side of the drain outlet. Drain...
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