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Report JG79A061 H01 Required Tools for Installation MITSUBISHI Phillips screwdriver Level 5/32 in.(4 mm)hexagonal wrench ./W ELECTRIC MSZ-D30/36NA scale Flare tool for R410A Utility knife or scissors Gauge manifold for R410A SPLIT-TYPE AIR CONDITIONERS MSY-D30/36NA 3 in.(75 mm)hole saw Vacuum pump for R410A INSTALLATION MANUAL Torque wrench Charge hose for R410A i Wrench(or spanner) Pipe cutter with reamer ..-1. BEFORE INSTALLATION ) 1-1.THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY • Be sure to read these safety precautions and instructions. • Be sure to observe the warnings and cautions specified here. • After reading this manual,be sure to store it with the OPERATING INSTRUCTIONS for future reference. • Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system. A WARNING (Could lead to death or serious injury.) •Do not install the unit by yourself(user). •Securely attach the electrical cover to the indoor unit and the service panel to Improper or incomplete installation could cause fire,electric shock,injury due to the outdoor unit. the unit falling,or water leakage.Consult a qualified installer or the dealer from If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are whom you purchased the unit. not attached securely,dust.water.etc.could collect in the unit and could cause a fire or •Follow the instructions detailed in the installation manual. an electric shock. Incomplete installation could cause fire or electric shock,injury due to the unit fall- •When installing or relocating the unit.make sure that no substance other than ing,or leakage of water. the specified refrigerant(R410A)enters the refrigerant circuit. •Install the unit securely in a place that can bear the weight of the unit. Any foreign substances in the refrigerant circuit can cause abnormal pressure rise If the installation location cannot bear the weight of the unit.the unit could fall or an explosion. causing injury. • Do not discharge the refrigerant into the atmosphere.Check that the refrigerant gas •Perform electrical work according to the installation manual and be sure to use does not leak after installation has been completed.If refrigerant leaks during an exclusive circuit.Do not connect other electrical appliances to the circuit. installation,ventilate the room. If the capacity of the power circuit is insufficient or there is incomplete electrical If refrigerant comes in contact with a fire.harmful gas could be generated. work.it could result in a fire or an electric shock. If refrigerant gas leaks indoors,and comes into contact with the flame of a fan •Ground the unit correctly. heater,space heater,stove,etc.,harmful gases will be generated. Do not connect the ground wire to a gas pipe.water pipe.lightning rod or tel- • Use appropriate tools and piping materials for installation. ephone ground.Defective grounding could cause electric shock. The pressure of R410A is 1.6 times higher than R22.Not using the appropriate •Do not damage the wires. tools and materials,or improper installation could cause the pipes to burst causing Damaged wires could cause fire. an injury. • Be sure to shut off the main power when setting up the indoor P.C.board or •When pumping down the refrigerant,stop the compressor before disconnecting wiring, the refrigerant pipes. Failure to do so could cause electric shock. If the refrigerant pipes are disconnected while the compressor is running and the • Use the specified wires to securely connect the indoor and outdoor units.At- stop valve is open,air could be drawn in and the pressure in the refrigeration cycle tach the wires firmly to avoid applying stress to the terminal block, could become abnormally high,causing the pipes to burst. Improper connection could cause fire. •When installing the unit,securely connect the refrigerant pipes before starting •Do not install the unit in a place where flammable gas may leak, the compressor. If gas leaks and accumulates around the unit.it could cause an explosion. If the compressor is started before the refrigerant pipes are connected and the •Do not use intermediate connection of the power cord or the extension cord. stop valve is open,air could be drawn in and the pressure in the refrigeration cycle Do not connect many devices to one AC outlet. could become abnormally high,causing the pipes to burst. It could cause a fire or an electric shock. •Fasten a flare nut with a torque wrench as specified in this manual. •Use the parts provided or specified parts for the installation work. If fastened too tight.a flare nut could break and cause refrigerant leakage. The use of defective parts could cause an injury or leakage of water due to a fire. •Install the unit according to national wiring regulations. an electric shock.the unit falling.etc. •When plugging the power supply plug into the outlet,make sure that there is no dust,blockage,or loose parts both in the outlet and on the plug.Verify that the power supply plug is completely in the outlet. If there is dust,blockage,or loose parts on the power supply plug or the outlet.it could cause electric shock or fire.If loose parts are found on the power supply plug,replace it. A CAUTION (Could lead to serious injury when operated incorrectly.) • Depending on the installation area,install a Ground Fault Interrupt(GFI)circuit •Do not touch the air inlet or the aluminum fins of the outdoor unit. breaker. This could cause injury. If the Ground Fault Interrupt(GFI)circuit breaker is not installed.an electric shock •Do not install the outdoor unit where small animals may live. could occur. If small animals enter the unit and damage its electrical parts,it could cause a •Perform the drainage/piping work securely according to the installation malfunction.smoke emission,or fire.Keep the area around the unit clean. manual. If there is defect in the drainage/piping work,water could drip from the unit.and damage household items. 1-2.SELECTING THE INSTALLATION LOCATION INDOOR UNIT Note: Note: • Where airflow is not blocked. In rooms where inverter type fluorescent lamps are used, • It is advisable to make a piping loop near outdoor unit • Where cool air aspreads over the entire room. the signal from the wireless remote controller may not be so as to reduce vibration. • On a rigid wall to reduce the possibility of vibration. received. • For increased efficiency, install the outdoor unit in a • Where it is not exposed to direct sunlight. location where continuous direct sunlight or excessive • Where it can be easily drained. OUTDOOR UNIT water can be avoided as much as possible. • At a distance 3 ft.(1 m)or more away from a TV and • Where it is not overly exposed to strong winds. radio. Operation of the air conditioner may interfere • Where airflow is good and dustless. with radio or TV reception.An amplifier may be re- • Where neighbours are not annoyed by operation Note: quired for the affected device. sound or hot air. When operating the air conditioner in low outside tern- • In a place as far away as possible from fluorescent • Where rigid wall or support is available to prevent the and incandescent lights(so the infrared remote control increase of operation sound or vibration. perature.be sure to follow the instructions described can operate the air conditioner normally). • Where there is no risk of combustible gas leakage. below. • • Where the air filter can be removed and replaced easily. • If installing the unit in a location high above the ground. Never install the outdoor unit in a place where its air be sure to secure the unit legs. inlet/outlet side may be exposed directly to wind. Note: Where it is at least 10 ft.(3 m)away from the antenna • To prevent exposure to wind, install the outdoor . Install the indoor unit high on the wall where air can dis- unit with its air inlet side facing the wall and a baffle tribute over the entire room. of TV Operation of the conditioner may set or radio. pra ay board on the air outlet side. interfere with radio or TV reception in areas where re- Avoid the following places for installation where air REMOTE CONTROLLER ception is weak.An amplifier may be required for the conditioner trouble is liable to occur. affected device. Where flammable gas could leak. • Where it is convenient to operate and easily visible. • Install the unit horizontally. 9 • Where children cannot easily touch it. • Please install it in an area not affected by snowfall or Where there is an excessive amount of machine oil • Select a position about 4 ft.(1.2 m)above the floor. blowing snow.In areas with heavy snow.please install in the air. • Check that signals from the remote controller from a canopy.a pedestal and/or baffle boards. Salty places such as the seaside. that position are received by the indoor unit('beep' • Where sulfide gas is generated such as a hot spring. or'beep beep'receiving tone sounds).Then,attach • Where there is high-frequency or wireless equipment. remote controller holder to a pillar or wall and install • wireless remote controller. 1-3.SPECIFICATIONS Electrical specifications 1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR WIRE CONNECTION MODEL MSY-D3ONA MSY-D36NA MSZ-D3ONA MSZ-D36NA • Power should be taken from an exclusive branched circuit. • Wiring work should be based on applicable technical standards. INDOOR UNIT • Wiring connections should be made following the diagram. • Securely tighten screws. Power supply 208/230,1,60 (V.PHASE,Hz) Connecting wires and the ground wire Min.Circuit Ampacity (A) 1.0 • Use solid conductor AWG14 or stranded conductor AWG14. • Use double insulated copper wire with 600 V insulation. Fan motor(F.L.A.) (A) 0.76 • Use copper conductors only. 'Follow local electrical codes. OUTDOOR UNIT Power supply cable and ground wire Power supply • Use solid or stranded conductor AWG12. (V,PHASE.Hz) 208/230,1,60 • Use copper conductors only. 'Follow local electrical codes. Max.Fuse size (time delay) (A) 25 Note: When the indoor unit is powered from the outdoor unit,depending on local code,a Min.Circuit Ampacity (A) 21 disconnect switch needs to be installed to a power supply circuit. Fan motor(F.L.A.) (A) 0.93 (R.L.A) (A) 16 Compressor• (L.R.A) (A) 20 Control voltage Indoor unit-Remote controller:(Wireless) Indoor unit-Outdoor unit:DC12-24 V(Polar) 1-3-2. REFRIGERANT PIPES • To prevent condensation,insulate the two refrigerant pipes. Outside Minimum Insulation • Refrigerant pipe bending radius must be 4 in.(100 mm)or more. diameter wall thick- thickness Pipe ness Insulation material Q CAUTION Be sure to use the insulation of specified thickness(table on the right).Excessive insula- inch(mm) lion may cause incorrect installation of the indoor unit,and too little insulation may cause For liquid 3/8(9.52) 0.0315(0.8) 5/16(8) Heat resistant foam condensate to form. - plastic 0.045 Specific For gas 5/8(15.88) 0.0394(1.0) 5/16(8) gravity Limits • The unit has flared connections on both indoor and outdoor sides. • Remove the valve cover from the outdoor unit,then connect the pipe. Pipe length 100 ft.(30 m)max. • Refrigerant pipes are used to connect the indoor and outdoor units. • Be careful not to crush or over bend the pipe in pipe bending. Height difference 50 ft.(15 m)max. No.of bends 10 max. • Refrigerant adjustment...If pipe length exceeds 25 ft.(7.5 m),additional refrigerant (R410A)charge is required. Up to 25 ft.(7.5 m) No additional charge is re- (The outdoor unit is charged with refrigerant for pipe length up to 25 ft.[7.5 m)) quired. Pipe length Exceeding 25 ft.(7.5 m) Additional charge is required. (Refer to the table below.) MSZ-D30/36NA 2.96 oz.each 5 ft.(55 g/m) Refrigerant to be added - MSY-D30/36NA 1.08 oz.each 5 ft.(20 g/m) 1-4.INSTALLATION DIAGRAM Use the wall hole sleeve Wall hole cover(D) (C)to prevent indoor/out- Indoor unit i . Seal the wall hole / ACCESSORIES door connecting wire(A) 7.r gap with Putty(H). Check the following parts before installation. from contacting metal Wall hole . parts in the wall and to sleeve(C) Attach the pipe to <Indoor unit> P ( _ protect the wiring from wall with pipap( (1) Installation plate 1 ' rodents. tachment soap(E). Attachment screws for the installs- Cur length.the (2) tion plate 7 _v extra length. �; 4 x 25 mm o E E Plpe attach- 1/ E c` men/strap `— (3) Remote controller holder 1 E r°o m:i5 0 4-11/16 in (E) to a (120 mrn) Attachment screw(F), Screws for the remote controller o`co c S o or more (4) holder 2 r;,E a y 3.5 x 16 mm(Black) E,r, g m' After the leak test,apply insulating mate- (5) Battery(AAA)for(6) 2 8.71/ rial tightly so that there is no gap. I . (6) Wireless remote controller 1 (1) (or n more) Space for Indoor unit working Please leave the space as shown in the Felt(7) (Fort left or left-rear piping) 2 (2) i picture for maintenance usage. (8) Air cleaning filter 2 "� [ 4 in.(100 mm) (9) Charge nut 1 =`` ' or more t _ rl (10)LAoint 1 �� _ j FIELD-SUPPLIED PARTS ` 'i9) / allation„ Indoor unit Plate( )(A) Indoor/outdoor unit connecting e' 1 $ (�)I' s ace (B) Extension pipe 1 "!�, p`cv . . '(7) (C) r;• (C) Wall hole sleeve 1 ' Dot of (G) tit piping g ,4�k�, E 9 When the tin is to be attached to a wall (D) Wall hole cover 1 -i` e, 0,4, obstruct -d 1 comprised of tin plate or metal netting,use t the air Z E (E) rr� chemically treated wooden piece 25/32 in. (E) Pipe attachment strap 2 to 5 - outlet. o =�,- (20 mm)or thicker between the wall and 0.0 the piping,or wrap insulation vinyl tape 7 (F) Screw for(E)4 x 20 mm 210 5 (6) 1 (3) `(F) to 8 turns around the piping. (G) Piping tape 1 o 1 = To use existing piping,perform COOL (H) Putty 1 (5) .... operation for 30 minutes and pump down Illlllililil�l�ll///III ` before removing the old air conditioner. Drain hose (4) Remake flare according to the dimension (or soft PVC hose,19/32 in.[15 C for new refrigerant. (I) mm]inner diameter or hard PVC 1 a. pipe VP16) 20 in.(500 mm) Outdoor unit installation ■ or more (J) Refrigerant oil 1 = (K) Unit:inch (K) Power supply cord' 1 :% (A) 33-1/16 •Note: .% '1” 3-15/16 19-11/16 Place indoor/outdoor unit connecting wire(A) 1\ ,,o m1 g ( ) ` poke 1 Air inlet and power supply cord(K)at least 3 ft.(1 m) (r 'o hi!�,^` � . away from the TV antenna wire. 'w';/ (pi,,,4 w a MI \5/" ift miii CO CO v. '��,,�,v�� * /0 Air outlet fil '`Yy ... (,/-`B) 4-3/8x 13/16 slot 1-18/32 1Q 1 tl" "npe, Unit:mm .. 840 100 500 Air inlet el,___ N O �pp M h R 0.Air outlet 4-10 x 21 slot 40 Units should be installed by licensed contractor according to local code requirements. 2-1.ATTACHING THE INSTALLATION PLATE .6a(04,./ 2-13/16 M.(70 mm)or more • Find a stud in the wall to attach installation plate(1)horizontally on the wall with screws(2). 5-1/8 in.(130 mm)or more for left • To prevent installation plate(1)from vibrating,be sure to install the attachment screws and left back piping(using spacer) in the holes indicated in the illustration.For added support,additional screws may also P P be installed in other holes. Installation plate(1) P • If the recessed bolt is too long,change it for a shorter one(field-supplied). Level [f e—ITIr P 4-ir PI- - Al.0 5 C ' 7 41n. 0 4-11116 in. ,50 P .. 1llOQmm(D(220mm)6 in. (120 .b, • —L_','v or more gri'Attachment screw(2) the Insert Align the Center of scale.• scale with a 3 in. the line.' (75 mm) hole •Same for left hole. 2-2. DRILLING Wall 1)Determine where the holes will be located on the wall. 2)Drill a a 3 in.(75 mm)hole.The outdoor side should be 6/32 to 9/32 in.(5 to 7 mm) 4 lower than the indoor side. e 3 in. U .(75 mm) .. 6/32-9/32 in. 3)Insert wall hole sleeve(C). (5-7 mm) Outdoor side 2-3. CONNECTING WIRES FOR INDOOR UNIT Note: When the indoor unit is powered from the outdoor unit,depending on local code,a discon- Electrical cover I Pull tab to remove cable guide. nect switch needs to be installed to a power supply circuit. VA Clamp 1)Open the front panel. • a / `NU Electrical box 2)Place the upper part of the indoor unit on the installation plate. I IRA, 3)Remove electrical cover. 4)Remove VA clamp. �` �� 5)Remove corner box. 6)Remove cable guide. Indoor 7)Remove conduit plate. terminal t[ I 8)Attach conduit pipe(for rear piping)I elbow joint(for right,left,or downward piping)to I::;l...alt conduit plate with lock nut.The thread of the installed conduit pipe/elbow joint appear- ing inside should be less than 3/8 in.(10 mm).(Fig.1)Elbow joint should appear less r• than 1-3/16 in.(30 mm)outside.(Fig.2) s. 1 II I 9)Process the end of ground wire(Fig.3).Connect it to the g r ou n d terminal f el ec tri ca l 1 1y• k ��y t'«� parts box. C '1f II, 10)Process the end of indoor/outdoor unit connecting wire(A)(Fig.3).Attach it to the �` As, 141 Grounding terminal block.Be careful not to make mis-wiring.Attach the wire to the terminal block — terminal securely so that its core cannot be seen,and no external force affects the connecting ^� section of the terminal block. O 11)Firmly tighten the terminal screws.After tightening,verify that the wires are tightly fas- Cable guide elk ,Q tened. 1 12)Reinstall conduit plate. `r ,j Conduit pipe 13)Reinstall cable guide. 'j 14)According to the piping direction,remove the shaded part of the left side of box(Fig.4) Conduit plate or corner box(Fig.5). • / or 15)Reinstall VA clamp. Lock nut JQ i 16)Reinstall electrical cover. / 17)Reinstall panel assembly. • Connect wires to the appropri- / ate terminals Elbow joint • For future servicing,leave some slack in the connecting wires. Conduit plate =__ Less than 3/8 in. - Remark: INDOOR UNIT (10 mm) ��: •A disconnect switch is required. y th Grounding Lock nut Conduit plate Check the local code. Terminal block`1 terminal" Less an 1-3/16 in. •'Use a ring tongue terminal in Conduit pipe or (30 mm) order to connect a ground wire I �w J elbow joint to terminal. Elbow joint Disconnect switch* Fig.1 (for right,ten,or downward piping) F . 2 208/230 V AC ' 1phase,60 Hz 5/8 in. 2-3/16 in. (15 mm) OUTDOOR UNIT (55 mm) 208/2r0VAy r ` I G 1 208/230 V AC, j;°`.; ,r 1 phase 2 wires, .iO ..:.t a 60 Hz �a-,I--+ ' `i+�;~a Lead/ i/SF . �- ,,r_ wire j j,��I • Make ground wire a little longer than Remove panel Box others.(More than 1-9/16 in.[40 mmj)g for piping on Remove panel for piping Fig.1 Fi 3 left side of unit on bottom left side of unit 4 Ground Grounding terminal• Corner box 4/„ Remove panel for Remove panel piping on bottom for piping on right side of unit side of unit Fig.5 2-4. INSTALLING THE L-JOINT 1 Install L-joint(10)on the back of the unit.Position L-joint(10)according to the piping ' direction.(Fig.1) 7--_ In case of bottom piping(Fig.2) E Ii —__ •Cut L-joint(10)at the position shown in Fig.3. V iir� I =�•Remove union nut from the unit and install it to L-joint(10). , r•Flare end of L-joint(10). 1 =f �' 'al 2)Use two torque wrenches to tighten the nut.(tighten torque 65 N•m)(Fig.4) iiktO I 'IIII)3)Install charge nut(9)to the liquid refrigerant piping.which connects the indoor and out- ��f_. i� �,I door unit. r., 14 I rli- Imo,4)Perform leak test of joint part(the part tightened in"2)"),the nut on the gas side should II IPI'. _/ • remain installed. i h I ' I� 5)Slide pipe cover of L-joint(10)and cover the joint.(Fig.5) I4✓yyam- -=sue Remove panel for piping on right side of unit Remove panel for piping on bottom right side of unit Fig.1 Fig.2 MI Cut Fig.3 Vh- _` - j ' III� � I"II' l I #j11l� i��l -1 Tightening Fi 4 Slide the pipe cover Fig.5 direction g' completely to the end. g' 2-5. PIPE FORMING AND DRAIN PIPING 2-5-1. PIPE FORMING • Place the drain hose below the refrigerant piping. • Make sure that the drain hose is not crowded or bent. Liquid pipe Gas pipe • Do not pull the hose when applying the tape. • When the drain hose passes the room,be sure to wrap it with insulation material(field- �, supplied). t`V Indoor/outdoor unit Note: connecting wire(A) Make sure not to damage the cover of refrigerant pipe when attaching it back on with Felt tape(7) Piping tape(G) screws. Left or left-rear piping Note: Be sure to reattach the drain hose and the drain cap if the piping is being installed on left -----4i -,-.1 Remove panel for piping on or bottom left of unit,otherwise.water could drip down from the drain hose. it, Piping tape 10. ri left side of unit. i • Felt tape(7) • -- t 1)Place the refrigerant piping and the drain hose together.then firmly apply felt tape(7) i_►:.,a"n.. n�n:;, • from the end. Felt tape(7)overlap width should be 1/3 the tape width.Use a bandage stopper at the end of felt tape(7). Drain cap 2)Pull out the drain cap at the back right of the indoor unit.(Fig.1) • Hold the convex section at the end and pull the drain cap. `Wry r 1-- 3)Pull out the drain hose at the back left of the indoor unit.(Fig.2) --,! ' • Hold the claw marked by the arrows and pull out the drain hose forward. 4)Put the drain cap into the section to which the drain hose is to be attached at the rear of - -Drain hose the indoor unit.(Fig.3) Fig.1 Fig.2- • Insert a screwdriver into the hole on the cap and insert the cap fully into the drain pan. ��- 5)Insert the drain hose fully into the drain pan at the back right of the indoor unit.(Fig.4) r Drain hose O 1 • Check if the hose is hooked securely to the projection of its inserting part at the �7�1-� drain pan. <_ 6)Insert the drain hose into wall hole sleeve(C).and attach the upper part of indoor unit /�� Drain cap o onto the installation plate(1).Then.shift the indoor unit completely to the left to make Fig.3 Fig.4 placing the piping in the back of the unit easier. 7)Cut out two pieces of cardboard from the shipping box(use any two pieces of the four pieces),roll each piece.hook them onto the back rib.and use them as spacer to lift the - _ indoor unit.(Fig.5) ` '� • I ..1I 8)Connect the refrigerant piping with the extension pipe(B). '_=11 �'� ' 9)Attach the lower part of the indoor unit into the installation plate(1). I'(tiM•+u.•+..._ „—� Fig 5 Rear or bottom piping 1)Place the refrigerant piping and the drain hose together,then firmly apply piping tape(G) from the end. 2)Insert the piping and the drain hose into the wall hole sleeve(C),and attach the upper i •t•.. part of the indoor unit on the installation plate(1). -84 3)Check if the indoor unit is attached securely on the installation plate(1)by moving the - unit to left and right. Cut off in case of down- 4)Attach the lower part of the indoor unit into the installation plate(1). ward piping. Right piping Note: Before performing the following,make sure that wiring is completed,and the conduit cover is installed.(Refer to 2-3.) .� 1)Place the refrigerant piping and the drain hose together, shift them to left side of the a U unit.and then firmly apply i in tape(G)from the end. 16 2)Insert the piping and the drain hose into the wall hole sleeve(C),and attach the upper /,�, I part of the indoor unit on the installation plate(1). 'trig& 3)Check if the indoor unit is attached securely on the installation plate(1)by moving the unit to left and right. 4)Attach the lower part of the indoor unit into the installation plate(1). 2-5-2. DRAIN PIPING Drain — 1 • If the extension drain hose has to pass through a room,be sure to wrap it with in- Drain hose 111 sulation(field-supplied). _ hose 27-9/16 in Hard vinyl chloride pipe / I.D.1-3/16 in. • The drain hose should point downward for easy drain.(Fig.1) 9" Downward (70 cm) • If the drain hose provided with the indoor unit is too Short.connect it with a field- II slope Soft hose I.D. or more (30 mm) supplied drain hose(I).(Fig.2) NI/ - 19/32 in. _ Insert • When connecting the drain hose to a hard vinyl chloride pipe,be sure to insert it 1 (15 mm) Different /' securely securely into the pipe.(Fig.3) `j' diameter joint - Fig.1 Fig.2 Fig.3 J Do not make drain piping as shown below. I Do not raise Accumulated At least Ill/ r v drain water Ip.d Tip of drain 1-31/32 m3m in. P/ �/i Ii hose dipped ) d I) Air III in water \gap 7777777 4- Water Water Water �1='d leakage leakage Waving leakage %,i Ditch 3. OUTDOOR UNIT INSTALLATION , 3-1.CONNECTING WIRES FOR OUTDOOR UNIT 1)Remove the service panel. 2)Remove the conduit cover. 3)Attach the conduit connector to conduit cover with lock nut then secure it against unit with screws. 5/8 in. 4)Connect ground wires of indoor/outdoor unit connecting wire(A)and power supply cord 1-3/8 in. (15 mm) Power supply cord(K) (K) to the TB support. (35 mm) 5)Loosen the terminal screw,and attach indoor/outdoor unit connecting wire(A)from the Eli unit correctly on the terminal block.Attach the wire to the terminal block securely so that its core cannot be seen,and no external force affects the connecting section of m the terminal block. Lead/ 6)Firmly tighten the terminal screws.After tightening,verify that the wires are tightly fas- wire j_ tened. 7)Connect power supply cord(K). 8)Install the conduit cover. 9)Install the service panel securely. Service panel Lock nut Conduit cover Li - Connector Tern al block Power supply cord(K) OI mg Indoor/outdoor unit �:� t∎. Y� b K.3 (:y!+4 connecting wire(A) m s [:1 "'=‘'''i to conduit cover taltr..Z._.'S GS1 Grounding / Make ground wire a little longer than oth- terminal (' a ers.(More than 1-3/8 in.[35 mm]) • For future servicing. leave some slack in `_ TB support the connecting wires. ■ A inch(mm) lightening torque Good No good Pipe diameter Nut 90° , inch Clutch Clutch Wing nut �� inch(mm) (mm) type tool type tool type tool N•m (kgf cm) ./ Copper for R410A for R22 for R22 07 pipe 10 to 13 �� 0 1/4 (6.35) 1/4 13.7 to (140 to r# Tilted Uneven Burred (17) 0.06 to 17.7 180) Fig.1 Fig.2 0.08 (1.5to 25to30 0 3/8 (9.52) 3/8 2.0) 34.3 to (350 to (22) 0.04 to 41.2 420 Burr Copper pipe 0 to 0.02 0.06 ) / Spare reamer (0 to 0.5) (1.0 to 36 to 42 » ' \Pipe cutter • 0 1/2 (12.7) 1/2 1.5) 49.0 to (500 to (26) 0.08 to 56.4 5 0.10 575) (2.0 to 54 to 58 Fig.3 05/8 (15.88) 5/8 2.5) 73.5 to (750 to (29) 78.4 800) NIFlaring tool 3-2.FLARE CONNECTION Q -•, /// it 1)Cut the copper pipe as straight as possible with a pipe cutter. (Fig.1,2) 4.„------=, t`� D� copper pipe 2)Remove all burrs from the cut section of the pipe,ensuring that precautions are taken to set avoid getting metal shavings into the piping.(Fig.3) Clutch type Wing nut type 3)Remove flare nuts attached to indoor and outdoor units,then put them on pipe. Fig.4 Flare nut Fig.5 4)Flaring work(Fig.4,5).Firmly hold copper pipe in the dimension shown in the table. Select A mm from the table according to the tool you use. Inside is shin- 5)Check Smooth all around•Compare the flared work with Fig.6. s catches t any. • If flare is defective,cut off the section and repeat procedure. Even length M all around Fig.6 3-3.PIPE CONNECTION • Fasten flare nut with a torque wrench as specified in the table above. • When fastened too tight,flare nut may eventually break and cause refrigerant leakage. Indoor unit connection Connect both liquid and gas piping to indoor unit. • Apply a thin coat of refrigerant oil(J)on the seat surface of pipe. • To connect,first align the center,then tighten the first 3 to 4 turns of flare nut. • Use tightening torque table above as a guideline for indoor unit side joints,and tighten j 1.0 using two wrenches.Excessive tightening damages the flare section. -a Outdoor unit connection Connect pipes to stop valve pipe joint of the outdoor unit following the same procedure detailed in Indoor unit connection. • For tightening,use a torque wrench or spanner. 3-4.INSULATION AND TAPING 1)Cover piping joints with pipe cover. 2)For outdoor unit side,insulate the piping,including valves. 3)Apply piping tape(G)starting from the connection on the outdoor unit. •When piping has to be installed through a ceiling,closet or where the temperature and humidity are high,use additional field-supplied insulation to prevent condensa- tion. dElli C ,tel : rail lV-tre . Pr 4-1.PURGING PROCEDURES AND LEAK TEST -0.101 MPa Compound pressure gauge 1)Remove service port cap of stop valve on the side of the outdoor unit gas pipe. *4 to 5 turns Stop valve cap (-30 in.Hg (for R410A) 2)Connect gauge manifold valve and vacuum pump to service port of stop valve on the (Torque 19.6 to (-760 mmHg)) Pressure gauge 'Close 29.4 N•m,200 Sto valve (for R410A gas pipe side of the outdoor unit. *Open to 300 kgfcm) for Stop D QQ o ) 3)Run the vacuum pump 15 minutes or more. _ Gauge manifold valve 4)Check the vacuum with the gauge manifold valve,then close it and shut off the vacuum _ / %0. (for R410A) Handle pump. '� / Low Handle High 5)Leave as it is for one or two minutes.Make sure pointer gauge manifold valve remains Hexagonal wrench ��) in the same position.Confirm that pressure gauge shows-0.101 MPa[Gauge](-30 N�� Stop valve for Charge hose in.Hg[-760 mmHg]). ,'i GAS (for R410A) 6)Quickly remove gauge manifold valve from service port of stop valve. Service port cap f 7)After refrigerant pipes are connected and evacuated,fully open all stop valves on both (Torque 13.7 to sides of gas pipe and liquid pipe.Operating the unit without fully opening the valves 17.7 N•m,140 to Adapter for pre- uf4nihii lowers the performance and causes problems. 180 kgf•cm) flow venting the back Vacuum pump(or the vacuum 8)Refer to 1-3.SPECIFICATIONS,and charge the prescribed amount of refrigerant if pump with the function to needed.Be sure to charge slowly with liquid refrigerant.Otherwise,composition of the prevent the back flow) refrigerant in the system may be changed and affect performance of the air conditioner. 9)Tighten cap of service port. • • 10)Conduct a leak test Precautions when using the control valve)When attaching the control valve to the service port,valve core may deform or loosen if excess pressure is applied.This may cause gas leak, �j When attaching the control valve to ervice port the service port,make sure that the A S Control valve„ valve core is in A.Do pot tight and 1 then tighten part A.Do not tighten Open\-- part A or turn the body when valve Close Charge hose Body core is in open position. 4-2.TEST RUN 1)Insert power supply plug into the power outlet and/or turn on the breaker. Caution. 2)Press the E.O.SW once.Test run will be performed • After test run or remote signal reception check,turn off the unit with the for 30 minutes.If the left operation indicator light blinks R ;, -y; ,l E.O.SW or the remote controller before turning off the power supply.If this every 0.5 seconds,inspect the indoor/outdoor unit con- • Ih procedure is not performed,the unit will automatically begin operation when netting wire(A).After the test run,emergency COOL ' I+ — power supply is resumed. mode(75°F[24°C]COOL)will start. To the user 3)To stop operation,press the E.O.SW several times c until all LED lamps turn off.Refer to operating instruct After installing the unit,explain to the user about auto restart function. lions for details. • If auto restart function is unnecessary,it can be deactivated.Consult the Emergency operation switch service representative to deactivate the function.Refer to the service man- Checking the remote(infrared)signal reception (E.O.SW) ual for details. Press the ON/OFF button on the remote controller and listen for an audible indicator 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 compres- sor will not operate for 3 minutes to protect the air conditioner. 4-4.EXPLANATION TO THE USER • Using the OPERATING INSTRUCTIONS,explain to the user how to use the 4-3.AUTO RESTART FUNCTION air conditioner(the remote controller,removing the air filters,placing or remov- This product is equipped with an auto restart function.When the power supply is cut off ing the remote controller from the remote controller holder,cleaning methods, during operation,such as during blackouts,the function automatically starts opera- precautions for operation,etc.) tion in the previous setting once the power supply is resumed.(Refer to the operating • Recommend that the user read the OPERATING INSTRUCTIONS carefully. instructions for details.) l 5. RELOCATING THE UNIT/ MAINTENANCE 5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY Removal procedure(Fig.1,2) 1)Remove the three screws that attach the panel assembly. 2)Open the front panel --mss _ a 3)Remove the two screws that attach the panel assembly. _ �� 4)Remove the panel assembly.Be sure to remove its bottom end first. vim_ t, 1 1 1 3 'V Fig.1 Fig.2 4 Installation procedure(Fig.3,4) 1)Point the horizontal vane slightly downward. 5 3 III . 2)Attach the bottom of the panel assembly under the horizontal vane. 3)Fit in the top of the panel assembly. //ila, 1s 4)Fit in the bottom of the panel assembly and tighten it using screws. �� 5)Push the section of the front panel marked by the arrows to close the front panel se- / 4 curely. 1 = } 2 Fig 3 Horizontal vane Fig.4 5-2. REMOVING THE INDOOR UNIT Remove the bottom of the indoor unit from the installation plate.(Fig.1,2) • Remove the panel assembly.(Refer to 5-1) • Insert flat screwdrivers into the square holes at the left and right bottom of the indoor unit and push them up;the bottom of the indoor unit goes down and the hooks are released. 7 '1 Remove the screw. Comer box --- *2 Remove the tab of corner box from the indoor unit,and pull the corner box. Push Lower 3 Pull the indoor unit to remove. $ / '3 1 *2 Square hole Fig.1 Fig.2 5-3.PUMPING DOWN When relocating or disposing of the air conditioner,pump down the system following the procedure below so that refrigerant is not 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 Ibffin?[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 op- eration 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 gauge shows 0.05 to 0 MPa[Gauge](approx.7.25 to 0 Ibflun2[0.5 to 0 kgf/cm2]). 6)Stop the emergency COOL operation. To stop operation,press the E.O.SW several times until all LED lamps turn off.Refer to operating instructions for details. mw MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE:TOKYO BLDG.,2-7-3,MARUNOUCHI,CHIYODA-KU,TOKYO 100-8310,JAPAN