Required Tools for Installation Phillips screwdriver PPKH[DJRQDOZUHQFK Level Flare tool for R410A Scale Gauge manifold for R410A Utility knife or scissors Vacuum pump for R410A 65 mm hole saw Charge hose for R410A Torque wrench Pipe cutter with reamer Wrench (or spanner) ENGLISH SG79Y762H04 Model names are indicated in 1-3. When installing multi units, refer to the installation manual of the multi unit for outdoor unit installation. SPLIT-TYPE AIR CONDITIONERS INSTALLATION MANUAL 1. BEFORE INSTALLATION 1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY • Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner. %HVXUHWRREVHUYHWKHZDUQLQJVDQGFDXWLRQVVSHFL¿HGKHUHDVWKH\LQFOXGHLPSRUWDQWLWHPVUHODWHGWRVDIHW\ • After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference. WARNING N Do not install the unit by yourself (user). Incomplete installation could cause fire or electric shock, injury due to the unit falling, or leakage of water. Consult the dealer from whom you purchased the unit RUDTXDOL¿HGLQVWDOOHU N Perform the installation securely referring to the installation manual. Incomplete installation could cause fire or electric shock, injury due to the unit falling, or leakage of water. N Install the unit securely in a place which can bear the weight of the unit. If the installation location cannot bear the weight of the unit, the unit could fall causing injury. N Perform electrical work according to the installation manual and be sure to use an exclusive circuit. Do not connect other electrical appliances to the circuit. ,IWKHFDSDFLW\RIWKHSRZHUFLUFXLWLVLQVXI¿FLHQWRUWKHUH LV LQFRPSOHWH HOHFWULFDO ZRUN LW FRXOG UHVXOW LQ D ¿UH RU an electric shock. N Do not damage the wires by applying excessive pressure with parts or screws. 'DPDJHGZLUHVFRXOGFDXVH¿UH N Be sure to cut off the main power in case of setting up the indoor P.C. board or wiring works. Failure to do so could cause electric shock. N 8VHWKHVSHFL¿HGZLUHVWRFRQQHFWWKHLQGRRUDQG RXWGRRUXQLWVVHFXUHO\DQGDWWDFKWKHZLUHV¿UPO\ to the terminal block connecting sections so the stress of the wires is not applied to the sections. ,QFRPSOHWHFRQQHFWLQJDQGVHFXULQJFRXOGFDXVH¿UH N 'RQRWLQVWDOOWKHXQLWLQDSODFHZKHUHLQÀDPPDEOH gas may leak. If gas leaks and accumulates in the area around the XQLWLWFRXOGFDXVHDQH[SORVLRQ (Could lead to death, serious injury, etc.) N Do not use intermediate connection of the power cord or the extension cord and do not connect many devices to one AC outlet. ,WFRXOG FDXVHD¿UHRUDQHOHFWULFVKRFNGXHWRGHIHFWLYHFRQWDFWGHIHFWLYHLQVXODWLRQH[FHHGLQJWKHSHUPLVsible current, etc. N %HVXUHWRXVHWKHSDUWVSURYLGHGRUVSHFL¿HGSDUWV for the installation work. The use of defective parts could cause an injury or leakDJH RI ZDWHU GXH WR D ¿UH DQ HOHFWULF VKRFN WKH XQLW falling, etc. N When plugging the power supply plug into the outlet, make sure that there is no dust, clogging, or loose parts in both the outlet and the plug. Make sure that the power supply plug is pushed completely into the outlet. If there is dust, clogging, or loose parts on the power supply plug or the outlet, it could cause electric shock or ¿UH,IORRVHSDUWVDUHIRXQGRQWKHSRZHUVXSSO\SOXJ replace it. N Attach the electrical cover to the indoor unit and the service panel to the outdoor unit securely. If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are not attached securely, LWFRXOGUHVXOWLQD¿UHRUDQHOHFWULFVKRFNGXHWRGXVW water, etc. N When installing or relocating the unit, make sure WKDWQRVXEVWDQFHRWKHUWKDQWKHVSHFL¿HGUHIULJHUant (R410A) enters the refrigerant circuit. Any presence of foreign substance such as air can FDXVHDEQRUPDOSUHVVXUHULVHRUDQH[SORVLRQ N Do not discharge the refrigerant into the atmosphere. If refrigerant leaks during installation, ventilate the room. CAUTION ,I UHIULJHUDQW FRPHV LQ FRQWDFW ZLWK D ¿UH KDUPIXO JDV could be generated. N Check that the refrigerant gas does not leak after installation has been completed. If refrigerant gas leaks indoors, and comes into contact ZLWKWKHÀDPHRIDIDQKHDWHUVSDFHKHDWHUVWRYHHWF harmful substances will be generated. N Use appropriate tools and piping materials for installation. The pressure of R410A is 1.6 times more than R22. Not using appropriate tools or materials and incomplete installation could cause the pipes to burst or injury. N When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. If the refrigerant pipes are disconnected while the compressor is running and the stop valve is open, air could be drawn in and the pressure in the refrigeration cycle could become abnormally high. This could cause the pipes to burst or injury. N When installing the unit, securely connect the refrigerant pipes before starting the compressor. If the compressor is started before the refrigerant pipes are connected and when the stop valve is open, air could be drawn in and the pressure in the refrigeration cycle could become abnormally high. This could cause the pipes to burst or injury. N )DVWHQDÀDUHQXWZLWKDWRUTXHZUHQFKDVVSHFL¿HG in this manual. ,IIDVWHQHGWRRWLJKWDÀDUHQXWPD\EUHDNDIWHUDORQJ period and cause refrigerant leakage. N The unit shall be installed in accordance with national wiring regulations. (Could lead to serious injury in particular environments when operated incorrectly.) N Perform the drainage/piping work securely accord- N Do not install the outdoor unit where small animals N Earth the unit correctly. ing to the installation manual. may live. Do not connect the earth to a gas pipe, water pipe, lightIf there is defect in the drainage/piping work, water If small animals enter and touch the electric parts inside ning rod or telephone earth. Defective earthing could could drop from the unit, soaking and damaging housethe unit, it could cause a malfunction, smoke emission, cause electric shock. hold goods. RU ¿UH $OVR DGYLVH XVHU WR NHHS WKH DUHD DURXQG WKH N Install an earth leakage breaker depending on the unit clean. installation place. N 'RQRWWRXFKWKHDLULQOHWRUWKHDOXPLQXP¿QVRI If an earth leakage breaker is not installed, it could the outdoor unit. cause electric shock. This could cause injury. 1-2. SELECTING THE INSTALLATION LOCATION INDOOR UNIT :KHUHDLUÀRZLVQRWEORFNHG • Where cool air spreads over the entire room. • Rigid wall without vibration. :KHUHLWLVQRWH[SRVHGWRGLUHFWVXQVKLQH • Where easily drained. • At a distance 1 m or more away from your TV and radio. Operation of the air conditioner may interfere with radio RU79UHFHSWLRQ$QDPSOL¿HUPD\EHUHTXLUHGIRUWKHDIfected device. ,QDSODFHDVIDUDZD\DVSRVVLEOHIURPÀXRUHVFHQWDQG incandescent lights (so the infrared remote control can operate the air conditioner normally). :KHUHWKHDLU¿OWHUFDQEHUHPRYHGDQGUHSODFHGHDVLO\ REMOTE CONTROLLER • Where it is easy to operate and easily visible. • Where children cannot touch it. 6HOHFWDSRVLWLRQDERXWPDERYHWKHÀRRUDQGFKHFN that signals from the remote controller are surely received by the indoor unit from that position (‘beep’ or ‘beep beep’ receiving tone sounds). After that, attach remote controller holder to a pillar or wall and install wireless remote controller. Note: Note: ,QURRPVZKHUHLQYHUWHUW\SHÀXRUHVFHQWODPSVDUHXVHG It is advisable to make a piping loop near outdoor unit so as the signal from the wireless remote controller may not be to reduce vibration transmitted from there. received. Note: OUTDOOR UNIT When operating the air conditioner in low outside tempera :KHUHLWLVQRWH[SRVHGWRVWURQJZLQG ture, be sure to follow the instructions described below. :KHUHDLUÀRZLVJRRGDQGGXVWOHVV • Where rain or direct sunlight can be avoided as much as • Never install the outdoor unit in a place where its air possible. LQOHWRXWOHWVLGHPD\EHH[SRVHGGLUHFWO\WRZLQG • Where neighbours are not annoyed by operation sound 7R SUHYHQW H[SRVXUH WR ZLQG LQVWDOO WKH RXWGRRU XQLW or hot air. with its air inlet side facing the wall. • Where rigid wall or support is available to prevent the • 7RSUHYHQWH[SRVXUHWRZLQGLWLVUHFRPPHQGHGWRLQVWDOO increase of operation sound or vibration. DEDIÀHERDUGRQWKHDLURXWOHWVLGHRIWKHRXWGRRUXQLW • Where there is no risk of combustible gas leakage. • When installing the unit at a high level, be sure to secure Avoid the following places for installation where air conditioner trouble is liable to occur. the unit legs. • Where it is at least 3 m away from the antenna of TV set :KHUHÀDPPDEOHJDVFRXOGOHDN or radio. Operation of the air conditioner may interfere with • Where there is much machine oil. radio or TV reception in areas where reception is weak. • Salty places such as the seaside. $QDPSOL¿HUPD\EHUHTXLUHGIRUWKHDIIHFWHGGHYLFH :KHUHVXO¿GHJDVLVJHQHUDWHGVXFKDVDKRWVSULQJ • Install the unit horizontally. • Please install it in an area not affected by snowfall or • Where there is high-frequency or wireless equipment. blowing snow. In areas with heavy snow, please install a FDQRS\DSHGHVWDODQGRUVRPHEDIÀHERDUGV 1-3. SPECIFICATIONS :LUHVSHFL¿FDWLRQV Power supply *1 Model MSZ-GC22VA MSZ-GC25VA MSZ-GC35VA Rated Frequency Voltage 230 V 50 Hz Breaker capacity Power supply Indoor/outdoor connecting wire 10 A 3-core 1.0 mm2 4-core 1.0 mm2 *1 Connect to the power switch which has a gap of 3 mm or more when open to interrupt the source power phase. (When the power switch is shut off, it must interrupt all phases.) *2 Use wires in conformity with design 60245 IEC 57. *3 Never use pipes with thickness less than specified. The SUHVVXUHUHVLVWDQFHZLOOEHLQVXI¿FLHQW Pipe size (thickness *3, *4) Gas Liquid ø9.52 mm ø6.35 mm (0.8 mm) (0.8 mm) Pipe length and height difference Insulation Refrigerant 0D[SLSH 0D[KHLJKW 0D[QXPEHU length difference of bends *5, *6 adjustment A *7 thickness *8, *9 20 m 12 m 10 30 g/m 8 mm Additional refrigerant = A × (pipe length (m) - 5) *4 Use a copper pipe or a copper-alloy seamless pipe. *5 Be careful not to crush or bend the pipe during pipe bending. *8 Insulation material : Heat resisting foam plastic 0.045 VSHFL¿FJUDYLW\ *6 Refrigerant pipe bending radius must be 100 mm or more. ,I SLSH OHQJWK H[FHHGV P DGGLWLRQDO UHIULJHUDQW 5$ %HVXUHWRXVHWKHLQVXODWLRQRIVSHFL¿HGWKLFNQHVV([FHVsive thickness may cause incorrect installation of the indoor charge is required. (No additional charge is required for pipe length less than 7 m.) XQLWDQGLQVXI¿FLHQWWKLFNQHVVPD\FDXVHGHZGULSSDJH 1-4. INSTALLATION DIAGRAM (1) Installation plate (2) 1 ,QVWDOODWLRQSODWH¿[LQJVFUHZ 4 × 25 mm 5 (3) Remote controller holder (4) Be sure to use wall hole Indoor unit sleeve (C) to prevent indoor/outdoor connecting wire (A) from contacting Wall hole metal parts in the wall and sleeve (C) to prevent damage by rodents in case the wall is hollow. 80 mm or mo re )L[LQJVFUHZIRU × 16 mm (Black) Felt tape (For left or left-rear piping) 1 )L[WKHSLSHWRZDOO ZLWKSLSH¿[LQJ band (E). 3LSH¿[LQJEDQG (E) )L[LQJVFUHZ (F) 1 7 mm or more (8) Drain socket PARTS TO BE PROVIDED AT YOUR SITE Indoor/outdoor unit connecting wire* 1 ([WHQVLRQSLSH 1 Wall hole sleeve 1 Wall hole cover 1 3LSH¿[LQJEDQG 2 to 5 )L[LQJVFUHZIRU(îPP 2 to 5 Piping tape 1 Putty 1 Basically open 100 mm or more without any obstruction in front and on both sides of the unit. 1 or 2 (J) Refrigeration oil (K) Power supply cord* Outdoor unit installation (GC25/GC35) After the leak test, apply insulating material tightly so that there is no gap. <Outdoor unit> Drain hose (I) (or soft PVC hose, 15 mm inner dia. or hard PVC pipe VP16) Seal the wall hole gap with putty (H). 2 2 1 (A) (B) (C) (D) (E) (F) (G) (H) Wall hole cover (D) Cut off the H[WUDOHQJWK 80 mm or mo re 1 (5) Battery (AAA) for (6) (6) Wireless remote controller (7) 63 mm or more/ 115 mm or more for left and left back piping (using spacer) ACCESSORIES Check the following parts before installation. <Indoor unit> 1 1 Open two sides of left, right, or rear side. * Note: Place indoor/outdoor unit connecting wire (A) and power supply cord (K) at least 1 m away from the TV antenna wire. mm 100more or 100 m or m orem ) C35 mm /200 100more or 25/G (GC 350 or m m orem Units should be installed by licensed contractor Appearance of the outdoor unit may differ from some models. according to local code requirements. When the piping is to be attached to a wall containing metals (tin plated) or metal netting, use a chemically treated wooden piece 20 mm or thicker between the wall and the piping or wrap 7 to 8 turns of insulation vinyl tape around the piping. 7RXVHH[LVWLQJSLSLQJSHUform COOL operation for 30 minutes and pump down before removing the old air FRQGLWLRQHU5HPDNHÀDUH according to the dimension for new refrigerant. Air inlet Air outlet 4-10 mm × 16/21 mm slot Drain piping for outdoor unit • Provide drain piping before indoor and outdoor piping connection. • Connect drain hose (I) I.D.15 mm as shown in the illustration. • Make sure to provide drain piping with a downhill grade for easy GUDLQÀRZ Note: Do not use drain socket (8) in cold regions. Drain may freeze and make the fan stop. (8) (I) 2. INDOOR UNIT INSTALLATION 2-1. FIXING OF INSTALLATION PLATE )LQGDVWUXFWXUDOPDWHULDOVXFKDVDVWXGLQWKHZDOODQG¿[LQVWDOODWLRQSODWHKRUL]RQWDOO\ZLWK¿[LQJVFUHZV 7R SUHYHQW LQVWDOODWLRQ SODWH IURP YLEUDWLQJ EH VXUH WR LQVWDOO WKH ¿[LQJ VFUHZV LQ WKH KROHV LQGLFDWHG LQ WKH LOOXVWUDWLRQ )RU DGGHG VXSSRUW ¿[LQJ VFUHZV PD\ DOVR EH installed in other holes. • When bolts recessed in the concrete wall are to be utilized, secure installation plate (1) using 11 × 20 · 11 × 26 oval hole (450 mm pitch). • If the recessed bolt is too long, change it for a shorter one available in the market. Terminal block Wall 2-2. WALL HOLE DRILLING VA clamp 1) Determine the wall hole position. 2) Drill a dia. 65 mm hole. The outdoor side should be 5 to 7 mm lower than the indoor side. 3) Insert wall hole sleeve (C). Ceiling Bind the line to the center hole. Installation plate (1) 5) Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull WKHZLUHVOLJKWO\WRFRQ¿UPWKDWWKH\GRQRWPRYH 6) Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA clamp. Never fail to hook the left claw of the VA clamp. Attach the VA clamp securely. )L[LQJVFUHZ Outdoor side 63 mm or more 115 mm or more for left and left back piping (using spacer) Lead wire Level Indoor/outdoor unit connecting wire (A) 80 mm or more 80 mm or more Wall Wall • Make earth wire a little longer than others. (More than 60 mm) )RUIXWXUHVHUYLFLQJJLYHH[WUDOHQJWK to the connecting wires. Indoor terminal block Earth wire (green/yellow) Indoor/outdoor unit connecting wire (A) )L[LQJVFUHZ Align the plumb line with the mark . Insert the scale. * Align the scale with the line. * Center of dia. 65 mm hole Plumb * Same for left hole. Outdoor terminal block 2-3. CONNECTING WIRES FOR INDOOR UNIT You can connect indoor/outdoor lead wire without removing the front panel. 1) Open the front panel. 2) Remove VA clamp. 3) Pass indoor/outdoor unit connecting wire (A) from the back of the indoor unit and process the end of the wire. /RRVHQWHUPLQDOVFUHZDQGFRQQHFW¿UVWWKHHDUWKZLUHWKHQLQGRRURXWGRRUXQLWFRQQHFWLQJZLUH$WRWKHWHUPLQDOEORFN%HFDUHIXOQRWWRPDNHPLVZLULQJ)L[WKHZLUH WRWKHWHUPLQDOEORFNVHFXUHO\VRWKDWQRSDUWRILWVFRUHLVDSSHDUHGDQGQRH[WHUQDO force is conveyed to the connecting section of the terminal block. 2-4. PIPE FORMING AND DRAIN PIPING Pipe Forming • Place the drain hose below the refrigerant piping. • Make sure that the drain hose is not heaved or snaked. • Do not pull the hose when applying the tape. • When the drain hose passes the room, be sure to wrap insulation material (obtainable at a store) around it. Liquid pipe Gas pipe Indoor/outdoor unit connecting wire (A) Felt tape (7) Piping tape (G) Rear, right, or downward piping Cut off in case of 1) Put the refrigerant piping and the drain hose right piping. together, then firmly apply piping tape (G) from the end. Cut off in case of 2) Insert the piping and the drain hose into the downward piping. wall hole sleeve (C), and hook the upper part of the indoor unit on the installation plate (1). 3) Check if the indoor unit is hooked securely on the installation plate (1) by moving the unit to left and right. 4) Thrust the lower part of the indoor unit into the installation plate (1). Drain Piping ,IWKHH[WHQVLRQGUDLQKRVHKDVWRSDVVWKURXJKDURRPEHVXUHWRZUDSLWZLWKFRPmercially sold insulation. 7KHGUDLQKRVHVKRXOGSRLQWGRZQZDUGIRUHDV\GUDLQÀRZ)LJ • If the drain hose provided with the indoor unit is too short, connect it with drain hose (I) that should be provided at your site. (Fig. 2) • When connecting the drain hose to the hard vinyl chloride pipe, be sure to insert it securely into the pipe. (Fig. 3) Drain hose Drain hose Downward slope Hard vinyl chloride pipe I.D. 30 mm 70 cm or more Soft hose I.D. 15 mm Insert securely Different diameter joint Fig. 1 Fig. 2 Fig. 3 Do not make drain piping as shown below. Accumulated drain water Do not raise Tip of drain hose dipped in water Air Water leakage Water leakage Waving Water leakage At least 50 mm gap Ditch Left or left-rear piping Note: Be sure to reattach the drain hose and the drain cap in case of left or left-rear piping. Otherwise, it could cause drops of water to drip down from the drain hose. Cut off in case of left piping. Piping tape (G) Felt tape (7) Drain cap Drain cap 1) Put the refrigerant piping and the drain hose together, WKHQ¿UPO\DSSO\IHOWWDSHIURPWKHHQG Felt tape (7) overlap width should be 1/3 the tape width. Use a bandage stopper at the end of felt tape (7). 2) Pull out the drain cap at the rear right of the indoor unit. Fig. 1 (Fig. 1) +ROGWKHFRQYH[VHFWLRQDWWKHHQGDQGSXOOWKH drain cap. 3) Pull out the drain hose at the rear left of the indoor unit. (Fig. 2) Drain hose • Hold the claw marked by the arrows and pull out the Fig. 2 drain hose forward. 4) Put the drain cap into the section to which the drain hose is to be attached at the rear of the indoor unit. (Fig. 3) • Insert not sharp-edged tools such as screwdrivers Drain cap into the hole at the end of the cap and insert the cap fully into the drain pan. Fig. 3 5) Insert the drain hose fully into the drain pan at the rear Drain hose right of the indoor unit. (Fig. 4) • Check if the hose is hooked securely to the projection of its inserting part at the drain pan. Fig. 4 6) Insert the drain hose into wall hole sleeve (C), and hook the upper part of indoor unit on installation plate (1). Then, move the indoor unit completely to the left in order to make placing the piping in the back space of the unit easier. &XWRXWDSLHFHRIFDUGERDUGIURPWKHVKLSSLQJER[UROO Fig. 5 it up, hook it onto the back rib, and use it as a spacer to lift the indoor unit. (Fig. 5) &RQQHFWWKHUHIULJHUDQWSLSLQJZLWKWKHH[WHQVLRQSLSH% 9) Thrust the lower part of the indoor unit into the installation plate (1). 3. OUTDOOR UNIT INSTALLATION 3-1. CONNECTING WIRES FOR OUTDOOR UNIT 1) Open the service panel. 2) Loosen terminal screw, and connect indoor/outdoor unit connecting wire (A) from WKHLQGRRUXQLWFRUUHFWO\RQWKHWHUPLQDOEORFN%HFDUHIXOQRWWRPDNHPLVZLULQJ)L[ the wire to the terminal block securely so that no part of its core is appeared, and no H[WHUQDOIRUFHLVFRQYH\HGWRWKHFRQQHFWLQJVHFWLRQRIWKHWHUPLQDOEORFN 3) Firmly tighten the terminal screws to prevent them from loosening. After tightening, SXOOWKHZLUHVOLJKWO\WRFRQ¿UPWKDWWKH\GRQRWPRYH 4) Connect power supply cord (K). )L[LQGRRURXWGRRUXQLWFRQQHFWLQJZLUH$DQGSRZHUVXSSO\FRUG.ZLWKWKHFRUG clamp. 6) Close the service panel securely. Terminal block • Make earth wire a little longer than others. (More than 35 mm) )RU IXWXUH VHUYLFLQJ JLYH H[WUD length to the connecting wires. Power supply cord (K) Lead wire Cord clamp 3-2. FLARING WORK 1) Cut the copper pipe correctly with pipe cutter. Copper (Fig. 1, 2) pipe 2) Completely remove all burrs from the cut cross section of pipe. (Fig. 3) Fig. 1 • Put the end of the copper pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the piping. No good Good 3) Remove flare nuts attached to indoor and outdoor units, then put them on pipe having completed burr removal. (Not possible to put them on after flaring work.) 4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in Tilted Uneven Burred the dimension shown in the table. Select A mm from Fig. 2 the table according to the tool you use. 5) Check &RPSDUHWKHÀDUHGZRUNZLWK)LJ ,IÀDUHLVQRWHGWREHGHIHFWLYHFXWRIIWKHÀDUHGVHFWLRQDQGGRÀDULQJZRUN again. Flaring tool Burr Copper pipe Spare reamer Pipe cutter Clutch type Fig. 3 Wing nut type Fig. 4 Copper pipe Smooth all around Inside is shining without any scratches. Die Flare nut Pipe diameter (mm) ø 6.35 (1/4”) ø 9.52 (3/8”) ø12.7 (1/2”) ø15.88 (5/8”) Fig. 5 Even length all around A (mm) Nut Clutch type Clutch type (mm) tool tool for R410A for R22 17 22 0 to 0.5 1.0 to 1.5 26 29 Fig. 6 Tightening torque Wing nut type tool for R22 N•m 13.7 to 17.7 34.3 to 41.2 49.0 to 56.4 2.0 to 2.5 73.5 to 78.4 1.5 to 2.0 kgf•cm 140 to 180 350 to 420 500 to 575 750 to 800 3-3. PIPE CONNECTION )DVWHQÀDUHQXWZLWKDWRUTXHZUHQFKDVVSHFL¿HGLQWKHWDEOH :KHQ IDVWHQHG WRR WLJKW ÀDUH QXW PD\ EUDNH DIWHU D ORQJ SHULRG DQG FDXVH UHIULJHUDQW leakage. Indoor unit connection Connect both liquid and gas pipings to indoor unit. • Apply a thin coat of refrigeration oil (J) on the seat surface of pipe. )RUFRQQHFWLRQ¿UVWDOLJQWKHFHQWHUWKHQWLJKWHQWKH¿UVWWRWXUQVRIÀDUHQXW • Use tightening torque table below as a guideline for indoor unit side union joint section, DQGWLJKWHQXVLQJWZRZUHQFKHV([FHVVLYHWLJKWHQLQJGDPDJHVWKHÀDUHVHFWLRQ Outdoor unit connection Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for indoor unit. • For tightening, use a torque wrench or spanner and use the same tightening torque applied for indoor unit. 3-4. INSULATION AND TAPING 1) Cover piping joints with pipe cover. 2) For outdoor unit side, surely insulate every piping including valves. 3) Using piping tape (G), apply taping starting from the entry of outdoor unit. • Stop the end of piping tape (G) with tape (with adhesive agent attached). • When piping have to be arranged through above ceiling, closet or where the temperature and humidity are high, wind additional commercially sold insulation to prevent condensation. 4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN 4-1. PURGING PROCEDURES AND LEAK TEST 4-2. TEST RUN 1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe. (The stop valve will not work in its initial state fresh out of the factory, totally closed with cap on.) 2) Connect gauge manifold valve and vacuum pump to service port of stop valve on the gas pipe side of the outdoor unit. 1) Insert power supply plug into the power outlet and/or turn on the breaker. Check that all LED lamps are not lit. If they are blinking, check that the horizontal vane is installed correctly. Refer to operating instructions for details. 2) Press the E.O. SW once for COOL, and twice for HEAT operation. Test run will be performed for 30 minutes. If the upper lamp of the operation indicator blinks every 0.5 seconds, inspect the indoor/outdoor unit connecting wire (A) for mis-wiring. After the test run, emergency mode (set temperature 24ºC) will start. 3) To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for details. Compound pressure gauge *4 to 5 turns Stop valve cap (Torque 19.6 to 29.4 N•m, 200 WRNJIƒFP *Close *Open –0.101 MPa (for R410A) (–760 mmHg) Pressure gauge (for R410A) Stop valve for LIQUID Gauge manifold valve (for R410A) Handle Low Handle High +H[DJRQDOZUHQFK Charge hose (for R410A) Stop valve for GAS Service port cap (Torque 13.7 to 17.7 N•m, 140 to 180 kgf•cm) Adapter for preventing the back ÀRZ Vacuum pump (or the vacuum pump with the function to SUHYHQWWKHEDFNÀRZ Precautions when using the control valve When attaching the control valve to the service port, valve core may GHIRUPRUORRVHQLIH[FHVVSUHVVXUH is applied. This may cause gas leak. Service port A Control valve Open Charge hose Close Body When attaching the control valve to the service port, make sure that the valve core is in closed position, and then tighten part A. Do not tighten part A or turn the body when valve core is in open position. 3) Run the vacuum pump. (Vacuumize for more than 15 minutes.) 4) Check the vacuum with gauge manifold valve, then close gauge manifold valve, and stop the vacuum pump. 5) Leave as it is for one or two minutes. Make sure pointer gauge manifold valve remains LQWKHVDPHSRVLWLRQ&RQ¿UPWKDWSUHVVXUHJDXJHVKRZV±0SD>*DXJH@± mmHg). 6) Remove gauge manifold valve quickly from service port of stop valve. 7) After refrigerant pipes are connected and evacuated, fully open all stop valves on both sides of gas pipe and liquid pipe. Operating without fully opening lowers the performance and this causes trouble. 8) Refer to 1-3., and charge the prescribed amount of refrigerant if needed. Be sure to charge slowly with liquid refrigerant. Otherwise, composition of the refrigerant in the system may be changed and affect performance of the air conditioner. 9) Tighten cap of service port to obtain the initial status. 10) Leak test Emergency operation switch (E.O. SW) Checking the remote (infrared) signal reception Press the ON/OFF button on the remote controller (6) and check that an electronic sound is heard from the indoor unit. Press the ON/OFF button again to turn the air conditioner off. • Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner. 4-3. AUTO RESTART FUNCTION This product is equipped with an auto restart function. When the power supply is stopped during operation, such as during blackouts, the function automatically starts operation in the previous setting once the power supply is resumed. (Refer to the operating instructions for details.) Caution: • After test run or remote signal reception check, turn off the unit with the E.O. SW or the remote controller before turning off the power supply. Not doing so will cause the unit to start operation automatically when power supply is resumed. To the user $IWHULQVWDOOLQJWKHXQLWPDNHVXUHWRH[SODLQWKHXVHUDERXWDXWRUHVWDUWIXQFWLRQ • If auto restart function is unnecessary, it can be deactivated. Consult the service representative to deactivate the function. Refer to the service manual for details. 4-4. EXPLANATION TO THE USER 8VLQJWKH23(5$7,1*,16758&7,216H[SODLQWRWKHXVHUKRZWRXVHWKHDLUFRQGLWLRQHUKRZWRXVHWKHUHPRWHFRQWUROOHUKRZWRUHPRYHWKHDLU¿OWHUVKRZWRUHPRYH or put the remote controller in the remote controller holder, how to clean, precautions for operation, etc.) • Recommend the user to read the OPERATING INSTRUCTIONS carefully. 5. RELOCATION AND MAINTENANCE 5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY 5-3. PUMPING DOWN When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is released into the atmosphere. 1) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit. 2) Fully close the stop valve on the liquid pipe side of the outdoor unit. 3) Close the stop valve on the gas pipe side of the outdoor unit almost completely so that it can be easily closed fully when the pressure gauge shows 0 MPa [Gauge] (0 kgf/ cm2). 4) Start the emergency COOL operation. To start the emergency operation in COOL mode, disconnect the power supply plug and/or turn off the breaker. After 15 seconds, connect the power supply plug and/or turn on the breaker, and then press the E.O. SW once. (The emergency COOL operation can be performed continuously for up to 30 minutes.) 5) Fully close the stop valve on the gas pipe side of the outdoor unit when the pressure JDXJHVKRZVWR03D>*DXJH@DSSUR[WRNJIFP2). 6) Stop the emergency COOL operation. Press the E.O. SW twice to stop the operation. Removal procedure 5HPRYHWKHVFUHZVZKLFK¿[WKHSDQHODVVHPbly. 2) Remove the panel assembly. Be sure to remove LWVERWWRPHQG¿UVW Installation procedure 1) Install the panel assembly following the removal procedure in reverse. 2) Be sure to press the positions as indicated by the arrows in order to attach the assembly completely to the unit. 5-2. REMOVING THE INDOOR UNIT Remove the bottom of the indoor unit from the installation plate. When releasing the corner part, release both left and right bottom corner part of indoor unit and pull it downward and IRUZDUGDVVKRZQLQWKH¿JXUHRQWKHULJKW If the above method cannot be used 5HPRYHWKHIURQWSDQHO7KHQLQVHUWKH[DJRQDOZUHQFKHVLQWRWKHVTXDUHKROHVRQWKH OHIWDQGULJKWVLGHVRIWKHXQLWDQGSXVKWKHPXSDVVKRZQLQWKHIROORZLQJ¿JXUH7KHERWtom of the indoor unit lowers and releases the hooks. This product is designed and intended for use in the residential, commercial and light-industrial environment. The product at hand is based on the following EU regulations: • Low Voltage Directive 2006/95/EC • Electromagnetic Compatibility Directive 2004/108/ EC Push Lower Square hole HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN AUTHORIZED REPRESENTATIVE IN EU: MITSUBISHI ELECTRIC EUROPE B.V. HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.