Air-Conditioners SEZ-A12, A18, A24AR INSTALLATION MANUAL. English

Transcription

1 ir-onditioners SZ-, 8, 4R ISTLLTIO MUL OR ISTLLR or safe and correct use, please read this installation manual thoroughly efore installing the air-conditioner unit. nglish

2 ontents. Safety precautions.... Selecting the installation location.... Installation diagram & ccessories Indoor unit installation Refrigerant piping work rainage piping work lectrical work uct work ir filter installation Test run.... Maintenance System control (ig. -)... 5 This Installation Manual descries only for the indoor unit and the connected outdoor unit of SUZ series. If the connected outdoor unit is MXZ series, refer to the Installation Manual for MXZ series.. Safety precautions Please report to or take consent y the supply authority efore connection to the system. e sure to read The following should always e oserved for safety efore installing the air conditioner. e sure to oserve the cautions specified here as they include important items related to safety. The indications and meanings are as follows. ould lead to death, serious injury, etc. aution: ould lead to serious injury in particular environments when operated incorrectly. fter reading this manual, e sure to keep it together with the instruction manual in a handy place on the customer s site. o not install it y yourself (customer). Incomplete installation could cause injury due to fire, electric shock, the unit falling or leakage of water. onsult the dealer from whom you purchased the unit or special installer. Install the unit securely in a place which can ear the weight of the unit. When installed in an insufficient strong place, the unit could fall causing injured. Use the specified wires to connect the indoor and outdoor units securely and attach the wires firmly to the terminal oard connecting sections so the stress of the wires is not applied to the sections. Incomplete connecting and fixing could cause fire. o not use intermediate connection of the power cord or the extension cord and do not connect many devices to one outlet. It could cause a fire or an electric shock due to defective contact, defective insulation, exceeding the permissile current, etc. heck that the refrigerant gas does not leak after installation has completed. aution: Perform grounding. o not connect the ground wire to a gas pipe, water pipe arrester or telephone ground wire. efective grounding could cause an electric shock. o not install the unit in a place where an inflammale gas leaks. If gas leaks and accumulates in the area surrounding the unit, it could cause an explosion. Install a ground leakage reaker depending on the installation place (where it is humid). If a ground leakage reaker is not installed, it could cause an electric shock. : Indicates an action that must e avoided. : Indicates that important instructions must e followed. : Indicates a part which must e grounded. : Indicates that caution should e taken with rotating parts. : Indicates that the main switch must e turned off efore servicing. : eware of electric shock. : eware of hot surface. arefully read the laels affixed to the main unit. Perform the installation securely referring to the installation manual. Incomplete installation could cause a personal injury due to fire, electric shock, the unit falling or leakage of water. Perform electrical work according to the installation manual and e sure to use an exclusive circuit. If the capacity of the power circuit is insufficient or there is incomplete electrical work, it could result in a fire or an electric shock. ttach the electrical part cover to the indoor unit and the service panel to the outdoor unit securely. If the electrical part cover in the indoor unit and/or the service panel in the outdoor unit are not attached securely, it could result in a fire or an electric shock due to dust, water, etc. e sure to use the part provided or specified parts for the installation work. The use of defective parts could cause an injury or leakage of water due to a fire, an electric shock, the unit falling, etc. Ventilate the room if refrigerant leaks during operation. If the refrigerant comes in contact with a flame, poisonous gases will e released. Perform the drainage/piping work securely according to the installation manual. If there is a defect in the drainage/piping work, water could drop from the unit and household goods could e wet and damaged. asten a flare nut with a torque wrench as specified in this manual. When fastened too tight, a flare nut may roken after a long period and cause a leakage of refrigerant.. Selecting the installation location.. Indoor unit Where airflow is not locked. Where cool air spreads over the entire room. Where it is not exposed to direct sunshine. t a distance m or more away from your TV and radio (to prevent picture from eing distorted or noise from eing generated). In a place as far away as possile from fluorescent and incandescent lights (so the infrared remote control can operate the air conditioner normally)... Outdoor unit Where it is not exposed to strong wind. Where airflow is good and dustless. Where it is not exposed to rain and direct sunshine. Where neighours are not annoyed y operation sound or hot air. Where rigid wall or support is availale to prevent the increase of operation sound or viration. Where there is no risk of comustile gas leakage. When installing the unit at a high level, e sure to fix the unit legs. Where it is at least m away from the antenna of TV set or radio. (Otherwise, images would e distured or noise would e generated.) Where the air filter can e removed and replaced easily. Mount the indoor unit into a ceiling strong enough to withstand the weight of the unit. Install the unit horizontally. aution: void the following places for installation where air conditioner troule is liale to occur. Where there is too much machine oil. Salty environment as seaside areas. ot-spring areas. Where sulfide gas exists. Other special atmospheric areas.

3 . Installation diagram & ccessories SZ-/8/4R ir inlet (rear side) dimensions 4 90 J ir inlet (ottom side) dimensions (mm) (0) = ø.9 holes = ø.9 holes 5 5 I J J = ø.9 holes 5 5 J PLT () (070) 0 or more 5.5 (0) Indoor unit (ig. -) ir inlet (rear side) *Select the either ack side or ottom side lectrical parts ox Suspension olt pitch 5 ccess door 6 Service space (It is necessary to maintain a working service area from the ceiling.) 7 ir inlet (ottom side) *Select the either ack side or ottom side 8 Suspension olt M0 or /8 (procure locally) 9 ir outlet duct flange 0 ir outlet Refrigerant pipe (gas) ig ø.9 holes Refrigerant pipe (liquid) Wiring entry Terminal lock rain plug R male ir outlet duct flange In case of ottom side suction, mount the PLT () on the rear side. fter installation, remove the transportation support PLT (). I PLT () J Inlet size SUZ-09/R.. Outdoor unit (ig. -) Ventilation and service space SUZ-09/R 00 mm or more 50 mm or more asically open 00 mm or more without only ostruction in front and on oth sides of the unit. 00 mm or more (Open two sides of left, right, or rear side.) SUZ-8/4R SUZ-8/4R 00 mm or more 50 mm or more 500 mm or more When the piping is to e attached to a wall containing metals (tin plated) or metal netting, use a chemically treated wooden piece 0 mm or thicker etween the wall and the piping or wrap 7 to 8 turns of insulation vinyl tape around the piping. Units should e installed y licensed contractor accordingly to local code requirement. ig. -

4 . Installation diagram & ccessories 4.. hecking the indoor unit accessories (ig. -) heck that the indoor unit is equipped with the following parts and accessories: Refrigerant pipe parts Pipe cover (for refrigerant piping joint) Small diameter Large diameter ands for temporary tightening of pipe cover 4 Remote controller parts Parts contained in the cardoard ox heck the contents and read the explanations provided. ir filter parts 4 Parts contained in the ag heck the contents and read the explanations provided. Refrigerant and drainage pipe sizes Model SZ-R SZ-8R SZ-4R Refrigerant Liquid O ø6.5 (/4") O ø6.5 (/4") O ø6.5 (/4") pipe as O ø9.5(/8") O ø.7 (/") O ø5.88 (5/8") rainage pipe ard PV pipe : O ø6 (") ig Indoor unit installation ig Suspension Structure (ive site of suspension strong structure.) 4... Wooden structure (ig. 4-) Select tie eam (one-story houses) or second-floor girder (two-story houses) as reinforcement memer. Use sturdy eams of at least 6 cm square for eam pitch of 90 cm or less or of at least 9cm square for eam pitch of cm. eiling Rafter eam Roof eam 4... erro-concrete structures (ig. 4-) Secure the suspension olts using the method shown, or use steel or wooden hangers, etc. to install the suspension olts. Use inserts rated at kg each (procure locally) Suspension olts M0 (/8") (procure locally) Steel reinforcing rod a ig. 4- c d e 4... Installing the suspension olts heck the pitch of the suspension olts. Use the ø0 (/8") suspension olts ( 4, procure locally). dhere strictly to the length of the suspension olts. 4.. Suspending the unit (ig. 4-) irect suspension method: Raise the unit and line it up with the suspension olts, then secure it using oth nuts. a ir outlet ir intake (selecting the either ack side or ottom side.) c Washer (procure locally) d uts (procure locally) e Suspension olts (procure locally) ig Transportation support removal (ig. 4-4) fter installation, completely remove the transportation support ecause this part should only e used during transportation. screws Transportation support ig

5 5. Refrigerant piping work a () 5.. Refrigerant pipe (ig. 5-) Maximum difference etween heights of indoor unit and outdoor unit, the length of refrigerant piping and the numer of ends in piping are within limits shown elow. () () ig. 5- a Indoor unit Outdoor unit Models () Pipe length () eight () umer of (one way) difference ends (one way) SZ-R max. 0 m max. m max. of 0 SZ-8R max. 0 m max. 5 m max. of 0 SZ-4R max. 0 m max. 5 m max. of 0 *: eight difference limitations are inding regardless of which unit, indoor or outdoor, is positioned higher. SZ-:Ø9.5 SZ-8:Ø.7 SZ-4:Ø5.88 Ø6.5 ig. 5- Indoor unit Outdoor unit void the following places for installation where air conditioner troule is liale to occur. Where there is too much oil such as for machine or cooking. Salty environment as seaside areas. ot-spring areas. Where sulfide gas exists. Other special atmospheric areas. This unit has flared connections on oth indoor and outdoor sides. (ig. 5-) Refrigerant pipes are used to connect the indoor and outdoor units as shown in the figure elow. Insulate oth refrigerant and drainage piping completely to prevent condensation. Refrigerant adjustment If pipe length exceeds 7 m, additional refrigerant (R40) charge is required. (The outdoor unit is charged with refrigerant for 7 m pipe length.) Pipe length 7 m maximum xceeding 7 m o additional charge required dditional charge required Refrigerant to e added SZ-R:0g/m SZ-8R:50g/m SZ-4R:50g/m Piping preparation Refrigerant pipes of, 5, 7, 0 and 5 m are availale as optional items. () Tale elow shows the specifications of pipes commercially availale. Model Pipe Outside diameter mm inch Min wall thickness Insulation thickness Insulation material SZ-R SZ-8R SZ-4R or liquid or gas or liquid or gas or liquid or gas 6.5 /4 9.5 /8 6.5 /4.7 / 6.5 / /8 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm.0 mm 8 mm 8 mm 8 mm 8 mm 8 mm 8 mm eat resisting foam plastic specific gravity () nsure that the refrigerant pipes are well insulated to prevent condensation. () Refrigerant pipe ending radius must e 0 cm or more. aution: Using careful insulation of specified thickness. xcessive thickness prevents storage ehind the indoor unit and smaller thickness causes dew drippage. 5

6 5. Refrigerant piping work a a 90 c d c d e ig. 5- f a opper tues ood c o good d Tilted e Uneven f urred a urr opper tue/pipe c Spare reamer d Pipe cutter 5.. laring work Main cause of gas leakage is defect in flaring work. arry out correct flaring work in the following procedure Pipe cutting (ig. 5-) Using a pipe cutter cut the copper tue correctly urrs removal (ig. 5-4) ompletely remove all urrs from the cut cross section of pipe/tue. Put the end of the copper tue/pipe to downward direction as you remove urrs in order to avoid urrs drop in the tuing. ig. 5-4 a a lare nut opper tue 5... Putting nut on (ig. 5-5) Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tue having completed urr removal. (not possile to put them on after flaring work) ig. 5-5 a c e d c ig. 5-6 a laring tool ie c opper tue d lare nut e Yoke laring work (ig. 5-6) arry out flaring work using flaring tool as shown at the right. imension Pipe diameter (mm) (mm) When the tool for R40 is used (mm) lutch type irmly hold copper tue in a die in the dimension shown in the tale at aove. c a d e f g h ig. 5-7 i heck (ig. 5-7) ompare the flared work with a figure in right side hand. If flare is noted to e defective, cut off the flared section and do flaring work again. a Smooth all around f Scratch on flared plane Inside is shining without any scratches g racked c ven length all around h Uneven d Too much i ad examples e Tilted 5.. Pipe connection (ig.5-8) pply a thin coat of refrigeration oil on the seat surface of pipe. or connection first align the center, then tighten the first to 4 turns of flare nut. Use tightening torque tale elow as a guideline for indoor unit side union joint section, and tighten using two wrenches. xcessive tightening damages the flare section. ig. 5-8 opper pipe O.. lare nut O.. Tightening torque (mm) (mm) ( m) ø ø ø ø a 6 f c d c e e ig. 5-9 g h c i a Indoor unit (main unit) Pipe cover c and d lare joint e Refrigerant pipe and insulating material (must e supplied locally) f Position the pipe cover so that the end is in firm contact with the main unit. asten it so that there is no clearance. g llow no clearance h Separator sheet i ut off the remainder and e careful of flying flare nut! (Internally pressurized) Remove the flare nut as follows:. Loosen the nut until you hear a hissing noise.. o not remove the nut until the gas has een completely released (i.e., hissing noise stops).. heck that the gas has een completely released, and then remove the nut. Outdoor unit connection onnect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for indoor unit. or tightening use a torque wrench or spanner, and use the same tightening torque applied for indoor unit. Refrigerant pipe insulation (ig. 5-9) () Peel the separator sheet off the accompanying pipe cover, and wrap it around the refrigerant pipe, making sure that the side which is slit faces upwards. () e sure to fix oth ends of the pipe cover using an attachment and (ensure that the and s joint faces upwards). () Stick vinyl tape on the joint positions.

7 5. Refrigerant piping work 5.4. Purging procedures leak test PURI PROURS onnect the refrigerant pipes (oth the liquid and gas pipes) etween the indoor and the outdoor units. Remove the service port cap of the 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).) onnect the gage manifold valve and the vacuum pump to the service port of the stop valve on the gas pipe side of the outdoor unit. Run the vacuum pump. (Vacuumize for more than 5 minutes.) heck the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump. Leave it as is for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position. onfirm that the pressure gage show -0.0MPa (-760 mmg) Remove the gage manifold valve quickly from the service port of the stop valve. fter refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides. Operating without fully opening lowers the performance and causes troule. Pipe length : 7 m maximum o gas charge is needed. Pipe length exceeding 7 m harge the prescried amount of gas. Tighten the cap to the service port to otain the initial status. Retighten the cap Leak test *lose *Open exagonal wrench *4 to 5 turns Stop valve Stop valve Service port -0.0MPa ompound pressure (-760 mmg) gauge (for R40) Pressure gauge (for R40) andle Low Stop valve harge hose (for R40) Window Vacuum pump dapter for preventing the ack flow auge manifold valve (for R40) andle igh harge hose (for R40) (or the vacuum pump with the function to prevent the ack flow) 6. rainage piping work ig. 6- : 50 mm or more : / or more 6.. rainage pipe connection (ig. 6-) Indoor unit s drainage pipe The drainage pipe should e arranged so that the discharge end is lower than the other end, as shown in the figure opposite. Place the trap outside the unit. fter connecting the drainage pipe, make sure that water is discharged properly and that there are no leaks. rainage piping connection RP male. Trap Outdoor unit drainage pipe connection When drainage piping is necessary, use the drain pan (supplied as an option). 7

8 7. lectrical work () SZ-R (: SYSTM) 7.. Power supply (ig. 7-) L lectrical specification Input capacity Main Switch/use () Power supply SZ-R SZ-8R SZ-4R ( phase ~/, 0-40V, 50z) () SZ-8/4R (: SYSTM) OR MULTI SYSTM L o not use intermediate connection of the power cord, etc. or an extension cord or connect many devices to one outlet. It could cause a fire or electric shock due to defective contact, defective insulation, exceeding the permissile current, etc. Supply power should e taken from independently ranched circuit. If not, it could cause a fire. switch with at least mm contact separation in each pole shall e provided y the air conditioner installation. Terminal lock -core cale Indoor unit (Refer to ig. 7-) Power supply reaker Outdoor unit (Refer to ig. 7-) 4-core cale (() -core cale) Remote controller L L L ig. 7- L Indoor wire connection (ig. 7-) Work procedure.remove screws to detach the electric component cover..route each cale through the wiring intake into the electric component ox. (Procure power cale and in-out connecting cale locally and use remote control cale supplied with the unit.).securely connect the power cale and the in-out connecting cale and the remote control cale to the terminal locks. 4.Secure the cales with clamps inside the electric component ox. 5.ttach the electric component cover as it was. ix power supply cale and indoor/outdoor cale to control ox y using uffer ushing for tensile forse. (P connection or the like.) ttach the electrical part cover securely. If it is attached incorrectly, it could result in a fire, electric shock due to dust, water, etc. Use the specified indoor/outdoor unit connecting wire to connect the indoor and outdoor units and fix the wire to the terminal ed securely so that no stress is applied to the connecting section of the terminal ed. Incomplete connection or fixing of the wire could result in a fire. The wiring configuration of the indoor unit s fan motor is for a 50z power supply. The wiring must e reconfigured if a 60z power supply is used. Refer to the wiring diagram for details ntry for remote controller cale ntry for power supply cale and Indoor-Outdoor connecting cale ale clamp 4 Remote controller terminal 5 Power supply terminal 6 Indoor/Outdoor unit connecting terminal 7 To remote controller 8 To power supply source 9 To outdoor unit 0 Indoor controller ig. 7-8

9 O 4 7. lectrical work () SZ-R (: SYSTM) () SZ-8/4R (: SYSTM) OR MULTI SYSTM L ig. 7-4 L L 5 5 Perform wiring as shown in the diagram to the lower left. (Procure the cale locally). (ig. 7-) Make sure to use cales of the correct polarity only. onnecting cale Power supply cale 4 core VV cale core with ground I cord SZ-:.0 mm or more SZ-:.0 mm or more SZ-8, 4:.5 mm or more SZ-8, 4:.5 mm or more olors olors : lue : lue : rown L : rown : Red : reen/yellow : reen/yellow Indoor 4 Outdoor 5 lways install an earth longer than other cales 6 Remote controller cale Wire o size (mm ) : ale 0.69 This wire accessory of remote controller (wire length : 0m, non-polar) 7 Remote controller 65 mm 5 mm ig. 7-4 onnect the terminal locks as shown in the diagram elow. (ig. 7-4) Loosen terminal screw Terminal ed () Use care not to make mis-wiring. () irmly tighten the terminal screws to prevent then from loosening. () fter tightening, pull the wires lightly to confirm that they do not move Remote controller 7... or wired remote controller ) Installing procedures () Select an installing position for the remote controller. (ig. 7-5) The temperature sensors are located on oth remote controller and indoor unit. s Procure the following parts locally: Two piece switch ox Thin copper conduit tue Lock nuts and ushings 0 ig I -. I ig. 7-6 T6 O 4 I J Remote controller profile Required clearances surrounding the remote controller Installation pitch () Seal the service entrance for the remote controller cord with putty to prevent possile invasion of dew drops, water, cockroaches or worms. (ig. 7-6) or installation in the switch ox: or direct installation on the wall select one of the following: Prepare a hole through the wall to pass the remote controller cord (in order to run the remote controller cord from the ack), then seal the hole with putty. Run the remote controller cord through the cut-out upper case, then seal the cutout notch with putty similarly as aove. -. To lead the remote controller cord from the ack of the controller: -. To run the remote controller cord through the upper portion: () or direct installation on the wall Wall onduit Lock nut ushing Switch ox Remote controller cord I Seal with putty J Wood screw ) onnecting procedures (ig. 7-7) onnect the remote controller cord to the terminal lock. To the terminal lock on the indoor unit T6 (o polarity) Set the dip switch o. shown elow when using two remote controller s for the same group. ip switches Setting the dip switches ig. 7-7 The dip switches are at the ottom of the remote controller. Remote controller Main/ Su and other function settings are performed using these switches. Ordinarily, only change the Main/Su setting of SW o.. (The factory settings are all O.) <SW o. > <SW o. > SW contents Main O/O omment <SW o. > SW contents Main O/O omment Remote controller Main/Su setting Main/Su Set one of the two remote controllers at one group to Main When remote controller power turned on ormally on/timer mode on When you want to return to the timer mode when the power is restored after a power failure when a Program timer is connected, select Timer mode. SW contents Main O/O omment <SW o. 4> SW contents Main O/O omment ooling/heating display in UTO mode Yes/o When you do not want to display ooling and eating in the uto mode, set to o. Intake temperature display Yes/o When you do not want to display the intake temperature, set to o. 9

10 7. lectrical work ord clamp. Service panel ixing screws 7.4. Outdoor unit (ig. 7-8) onnect cale from the indoor unit correctly on the terminal-lock. Use the same terminal lock and polarity as is used with the indoor unit. or aftercare maintenance, give extra length to connecting cale. oth end of connecting cale (extension wire) are peeled off. When too long, or connected y cutting off the middle, peel off power supply cale to the size given in the figure. e careful not to contact connecting cale with piping. aution: Use care not to make mis-wiring. (ig. 7-9) irmly tighten the terminal screws to prevent them from loosening. fter tightening, pull the wires lightly to confirm that they do not move. ig. 7-8 Loosen terminal screw Terminal lock Lead wire e sure to attach the service panel of the outdoor unit securely. If it is not attached correctly, it could result in a fire or an electric shock due to dust, water, etc. Tighten terminal screws securely. Wiring should e done so that the power lines are not suject to tension. Otherwise, heat may e generated or fire may occur. ig uct work t the time of shippting from factory O I K In case of ottom-side suction L M P J Use the canvas duct for connecting the indoor unit and the duct. (ig. 8-) Use fire-proof material for the duct parts. Make sure that the duct has sufficient heat insulation. lectrical parts ox anvas duct ir outlet flange ir outlet duct ir filter (procure locally) ir outlet grille ir intake grille eiling I rainage pan J ir intake K ir outlet L llow clearance to avoid short cycling. M Indoor unit arth terminal O arth cale P 850 mm or more Q Safety net (procured locally) Q Remove the panel attached to the ottom side, and mount it on the rear side. ig. 8- otes: The fan and motor are dangerous if handled during operation. or this reason, e sure to install the indoor unit at least 850mm from the air intake grill. If it is not possile to put more than 850 mm of distance etween the air intake grill and the indoor unit, install the safety net Q (locally procured). onnect the main ody of the air conditioner and the duct so that their potentials are equal. onnect an earth cale O from the air outlet flange to the earth terminal. Then, connect another earth cale O from the earth terminal to the air outlet duct. e sure to install an air filter (procure locally) and an air outlet duct. 0

11 9. ir filter installation ut out onfirmation of enclosed parts (ig. 9-) Please ensure all the parts shown elow are present efore starting installation. ilter ilter rail ilter rail 4 ST. screw (4 0) 4 5 lamp 6 Seal ole ut out 6 ig ilter rail installation (Rear air intake) (ig. 9-) Please select air intake direction or. Transportation support remove (Throw away).. Please attach filter rail as per the diagram (screw 6). Please connect rails carefully.. Please attach filter rail as per the diagram (screw 6). Please connect rails carefully. 4. Seal 6 Upright position here. ontrol ox rain pan ir tight seal Level with edge 4 ig ilter rail installation (ottom air intake) (ig. 9-). Transportation support remove (Throw away).. Please move the plate position. (Please use the screws removed.). Please attach filter rail as per the diagram (screw 6). Please connect rails carefully. 4. Please attach filter rail as per the diagram (screw 6). Please connect rails carefully. 5. lamp 5 (ttach the clamps 5 with screw ) Upright position here. 6. Seal 6 Upright position here. 4 ontrol ox ir tight seal Level with edge ig. 9-

12 9. ir filter installation 9.4. ilter installation points (Rear air intake) (ig. 9-4). Insert the filter into rail. ook the filter onto rail ontrol ox rain pan ilter Rail Rail ig ilter installation points (ottom air intake) (ig. 9-5). Insert the filter into rail. ook the filter onto rail. end the clamp to hold the filter. ontrol ox ilter Rail Rail end lamp 5 ig. 9-5

13 ST Y ROST LOK 0.Test run 0.. efore test run s fter completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply. s Use a 500-volt megohmmeter to check that the resistance etween the power supply terminals and ground is at least.0 MΩ. s o not carry out this test on the control wiring (low voltage circuit) terminals. o not use the air conditioner if the insulation resistance is less than.0 MΩ. Insulation resistance fter installation or after the power source to the unit has een cut for an extended period, the insulation resistance will drop elow MΩ due to refrigerant accumulating in the compressor. This is not a malfunction. Perform the following procedures.. Remove the wires from the compressor and measure the insulation resistance of the compressor.. If the insulation resistance is elow MΩ, the compressor is faulty or the resistance dropped due the accumulation of refrigerant in the compressor.. fter connecting the wires to the compressor, the compressor will start to warm up after power is supplied. fter supplying power for the times indicated elow, measure the insulation resistance again. The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise aove MΩ after the compressor is warmed up for two to three hours. (The time necessary to warm up the compressor varies according to atmospheric conditions and refrigerant accumulation.) To operate the compressor with refrigerant accumulated in the compressor, the compressor must e warmed up at least hours to prevent reakdown. 4. If the insulation resistance rises aove MΩ, the compressor is not faulty. aution: The compressor will not operate unless the power supply phase connection is correct. Turn on the power at least hours efore starting operation. - Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season. K TRLLY OTROLL O O TMP. TIMR ST RROR O r. OT VILL ILTR K MO TST RU UTIO O/O ILTR K TST I M ig. 0- ST Y ROST TRLLY OTROLL K IOOR UIT RSS O LOK RROR O O UIT RSS O r. O O OT VILL ILTR K MO UTIO 0.. Test run The following methods are availale Using wired remote controller (ig. 0-) Turn on the power at least hours efore the test run. Press the [TST] utton twice. TST RU liquid crystal display Press the [Mode selection] utton. Make sure that wind is lown out. 4 Press the [Mode selection] utton and switch to the cooling (or heating) mode. Make sure that cold (or warm) wind is lown out. 5 Press the [an speed] utton. Make sure that the wind speed is switched. 6 heck operation of the outdoor unit fan. 7 Release test run y pressing the [O/O] utton. Stop 8 fter the checks, always turn off the power. O/O utton Test run display Indoor temperature liquid line temperature display O/O lamp Power display rror code display Test run remaining time display Set temperature utton Mode selection utton I an speed utton M TST utton K TMP. TIMR ST O/O ILTR K TST ST Y ROST ig. 0- TRLLY OTROLL K IOOR UIT RSS O LOK O O RROR O O UIT RSS O a) r. OT VILL ILTR K MO UTIO 0.. Self-check 0... Wired remote controller (ig. 0-) Turn on the power. Press the [K] utton twice. Set refrigerant address with [TMP] utton if system control is used. 4 Press the [O/O] utton to stop the self-check. K utton Refrigerant address TMP. utton I: Indoor unit O: Outdoor unit heck code or description of each check code, refer to the following tale. heck code Symptom 50 Room temperature thermistor error 50 RT, thermistor error 50 rain sensor error 50 rain pump error 50 reezing safeguard operation 0405, 50, 40, 50 Outdoor unit error 68~684 Signal error etween remote controller and indoor units 6800 ommunication error etween indoor and outdoor units 8000 o alarm history o unit On wired remote controller heck code displayed in the L.

14 0.Test run 0.4. UTO RSTRT UTIO This model is equipped with the UTO RSTRT UTIO. When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized y the indoor controller oard. The auto restart function sets to work the moment the power has restored after power failure, then, the unit will restart automatically. otes: The operation settings are memorized when 0 seconds have passed after the remote controller was operated. If the main power is turned off or a power failure occurs while UTO STRT/ STOP timer is active, the timer setting is cancelled. s this model is equipped with the auto restart function, the air conditioner should start operating at the same time that a power has restored. If the unit has een off with the remote controller efore power failure, the auto restart function does not work as the power utton of the remote controller is off. To prevent reaker off due to the rush of starting current, systematize other home appliance not to turn on at the same time Indoor temperature position change function (ig. 0-) This model is equipped with the indoor temperature position change function. etection of room temperature can e changed into remote controller s internal sensor. Power supply is turn off. ut the JP4 jumper wire of the indoor controller oard with a pair of nippers. Indoor controller oard JP4 4 P R00J590 5.Maintenance ig. 0- K I J L Indoor unit Union Liquid pipe as pipe Stop valve Outdoor unit Refrigerant gas cylinder operating valve M ig. - Refrigerant gas cylinder for R40 with siphon I Refrigerant (liquid) J lectronic scale for refrigerant charging K harge hose (for R40) L auge manifold valve (for R40) M Service port.. as charge (ig. -). onnect gas cylinder to the service port of stop valve (-way).. xecute air purge of the pipe (or hose) coming from refrigerant gas cylinder.. Replenish specified amount of refrigerant, while running the air conditioner for cooling. ote: In case of adding refrigerant, comply with the quantity specified for the refrigerating cycle. aution: o not discharge the refrigerant into the atmosphere. Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit. or additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. In this case, aility of the refrigerating cycle decreases or normal operation can e impossile. owever, charging the liquid refrigerant all at once may cause the compressor to e locked. Thus, charge the refrigerant slowly. To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm water (under 40 ) during cold season. ut never use naked fire or steam. 4

15 .System control (ig. -) JP7,8 4 I P Wiring from the Remote ontrol This wire is connected to terminal lock for remote controller of the indoor unit (nonpolar). When a ifferent Refrigerant System rouping is Used. Up to 4 refrigerant systems can e controlled as one group using the M remote controller. There is need to set up JP7, JP8 jumper wire of indoor controller oard. ote: In single refrigerant system, there in no need of wiring, and there is need to cut JP7, JP8 jumper wire of indoor controller oard. The total extention of remote control cale is a maximum of 00 m. Refrigerant address = 00 JP7 JP8 The setup at the time shipment. In single refrigerant system, there is no need to cut JP7, JP8. R00J590 5 Outdoor unit Indoor unit (only SZ) Master remote controller Suordinate remote controller Standard : (Refrigerant address = 00) Simultaneous two groups (Refrigerant address = 0) Simultaneous three groups (Refrigerant address = 0) Simultaneous four groups (Refrigerant address = 0) I Indoor controller oard. Refrigerant address = 0 Refrigerant address = 0 Refrigerant address = 0 ut the JP7 jumper wire of indoor controller oard with a pair of nipper. ut the JP8 jumper wire of indoor controller oard with a pair of nipper. ut the JP7, JP8 jumper wire of indoor controller oard with a pair of nipper. ig. - 5

16 This product is designed and intended for use in the residential, commercial and light-industrial environment. The product at hand is ased on the following U regulations: Low Voltage irective 7// lectromagnetic ompatiility irective 89/ 6/ Please e sure to put the contact address/telephone numer on this manual efore handing it to the customer. OI: MITSUISI KI L., --, MRUOUI, IYO-KU, TOKYO 00-80, JP 79S990 Printed in Thailand