hitachi split-unit air conditioner installation manual safety precaution
Contents
1. The refrigerating machine oil is easily affected by moisture Use caution to prevent water from entering the cycle The connection of insulated drain hose Inner diameter 16mm For outdoor unit installation allow at least i 2 sides of space around the unit to ensure ventilation flue Please use insulated drain hose for the indoor piping commercial it product e The coolant pipes should be adjusted to fit into the hole on the wall and then ready for further connection e The terminals of 2 connected pipes must be covered with insulator used for terminal connection e Connect the power cord e After adjustment fit the power cord and pipes into the space available under the indoor unit Power cord A CAUITON e The rubber strap used for fixing the insulator should not be tied with great force Otherwise this will damage heat insulation and causes water condensation Pipe Rubber strap tied with great force THE CONNECTION OF COOLANT PIPE DURING THE INSTALLATION OF INDOOR UNIT Preparation To Install Coolant Pipes e Coolant pipes and power cord must be tied together e The front part of the coolant pipes are at locations symbol marked with V Match the end of the refrigerating pipes with the locations marked with V symbol Ai Installation Please bend A2. Be sure to connect the earth line from the power supply wire to the outdoor unit and between the outdoor and indoor unit Do not connect the earth line to the gas tube water pipe lighting rod or the earth line of the telephone unit Improper earthing may cause electric shocks e X Items amp are included in the package of the outdoor unit When finishing the refrigerant collection pumping down stop the compressor and then remove the coolant pipe If you remove the refrigerant pipe while the compressor is operating and the service valve is released air is sucked and a Dimension of Mounting Stand of the outdoor unit pressure in the freezing cycle system will build up steeply causing an explosion or injury unit mm The difference in height between e When installing the unit be sure to install the refrigerant pipe before starting the compressor eer EER ee the indoor and outdoor unit If the refrigerant pipe is not installed and the compressor is operated with the service valve released air is sucked and the J y KN TRAA should be kept below 10m pressure level of the refrigeration cycle may increase abnormally which could result in a rupture and injury J as wide as The connecting pipe no matter possible big or small should all be j insulated with insulation pipe and above 100mm then wrapped with vinyl tape ia above The insulator will deteriorate if X above PES 200mm it is not wrapped wi
3. ern rar r z 7 m Screw for Mounting Plate Please request your sales agent or qualified technician to install your unit Water leakage short circuit or fire may occur if you do the X above 50mm installation work yourself Qu 4 1x32 10 Be sure to Please observe the installation stated in the installation manual during the process of installation Improper installation may cause Cut away shaded completely water leakage electric shock and fire AAA Size Battery portion and me seal any gap Make sure that the units are mounted at locations which are able to provide full support to the weight of the units If not the units may 2 openi tat with putty there is no burr Tabout 0 45 collapse and impose danger Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing E 7 with the electrical work Use cables which are approved official in your country Be sure to use the specified circuit A short circuit and Remote Pate Direction of Piping 8 J fire may occur due to the use of low quality wire or improper work 1 Hoantaly 3 5 Be sure to use the specified cables for connecting the indoor and outdoor units Please ensure that the connections are tight after the backward 8 24 conductors of the wire are inserted into the terminals to prevent the external force is being applied to the connection section of the terminal base Impro
4. As shown in figure below 2 Push plug into the holes As shown below Ceiling LLLILLILLLLLLLLL LL Plug 1 Hanger 2 Screw above 50mm Wallt TJN 1 Wall Penetration and Installation of Protection Pipe e Drill a 65mm hole on wall which is slightly tilted towards the outdoor side Drill the wall at a small angle e Cut the protection pipe according to the wall thickness e Empty gap in the sleeve of protection pipe should be completely sealed with putty to avoid dripping of rain water into the room 4 1 x 32 screw Outdoor A CAUITON Be sure that the wire is not in contact with any metal in the wall Please use the protection pipe as wire passing through the hollow part of the wall so as to prevent the possibility of damaged by mouse 2 5mm Seal with Sleeve of protection Protection pipe Pipe VERTICALLY DOWNWARD PIPING e Connect power cord e Pull out the pipe power cord and drain hose Installation e The upper part of the indoor unit is hanged on the mounting plate e The projection at the lower part of the indoor unit is hooked onto the mounting plate Power line pipe and drain hose must be tied together with plastic tape Mounting Plate Please pull the lower part of the indoor unit outwards to check if the unit is hooked onto the mounting plate Improper installation may cause vibration and
5. for R410A Screwdriver Measuring Tape Knife Saw Pipe Cutter Hexagonal Wrench Indoor Unit Outdoor Unit RAS X18HAK RAC X18HAK Key ZQ 4mm Power Drill 65 980mm Vacuum Pump Pliers or Wrench Torque Wrench Vacuum Pump Adaptor Flare Tool Gas Leakage Detector Manifold Valve Charge Hose Z 5 oc fe fe ral zZ OUTDOOR UNIT SAFETY PRECAUTION e Read the safety precautions carefully before operating the unit e The contents of this section are vital to ensure safety Please pay special attention to the following sign A WARNING Incorrect methods of installation may cause death or serious injury O This sign indicates prohibition Names of Indoor Components A CAUTION Improper installation may result in serious consequence No Component s Name Qty The rat a Unit Figure showing the Installation s eee i ii z A i ower Col i Be sure that the unit operates in proper condition after installation Explain to customer the proper operation and maintenance of the unit Mounting Plate i of Indoor and Outdoor Unit j 3 i pa t f f about as described in the user s guide Ask customers to keep this installation manual together with the instruction manual D ET 2 0 9m A about 1 6m above Hp UE e 50mm Se 8 A A WARNING Do not alter the power cord FOND
6. noise Lift the body of the unit upwards and then force it downwards Coolant pipe Protection fj Pipe P Drain Hose power Cord HORIZONTAL PIPING Change of Drain Hose and Installation Procedures e Exchange the location of drain hose and drain cap during horizontal piping as shown in figure below Be sure to plug in the drain hose until the insulating material folds upon itself e Please use pliers to pull out the drain cap This is an easier way to remove the drain cap Drain cap Drain Hose Drain cap ar I Remove the cap for drain hose installation Please insert i n Please insert until here zy Mf until here Drain cap a C Drain hose ba Condensed water may leak out if not inserted propery HORIZONTAL amp DOWNWARD PIPING MAKING OPENINGS e During horizontal or downward piping use a knife to cut openings as shown in figure Then smoothen the edges of openings with a file e Transform the piping while holding down the lower portion of pipe support by hand Pull up the pipe after bending downward Heating efficiency will be enhanced if the space below the outdoor unit is closed so that no air passes through Procure the material locally a above 200mm Maximum pipe length 20m The indoor piping should be insulated with the enclosed insulation pipe
7. to drain In this case please remove the bush and the drain pipe at the bottom of unit Left and center near discharge portion of air each 1 place It becomes smooth drain Ensure that the distance from the drain hole to the ground is 250 mm or more Please mount the Outdoor unit of stable ground to prevent vibration and increase of noise level Decide the location for piping after sorting out the different types of pipe available When removing side cover please pull the handle after undoing the hook by pulling it downward Reinstall the side cover in the reverse order of the removal 4 Preparation of Pipe e Use a pipe cutter to cut the pipe and remove burr Trimming tool D Copper la A CAUTION Please face this side suction sid of the unit to the wall Please remove side cover when connecting the piping and connecting cord Force cooling operation e When the service switch of the outdoor unit is pressed for 1 or more seconds the force cooling operation starts Use this mode when performing the failure diagnosis or collecting refrigerant into the outdoor unit e Remove burr i If burr is not removed it may cause leakage Point the side to be trimmed downwards during trimming to prevent copper chips from entering the pipe e Before flaring please put on the flare nut A CAUTION e Do not touch the suction port bottom surface or aluminum fin of the outdoor unit e Failure to do so may cause
8. CAUITON e Please fix in the plastic core after flaring to avoid plastic chips entering the pipes at a small 7 radius to form an arc Temporary stand Hang the indoor unit onto the mounting plate Use the temporary stand at the back of the indoor unit to push its lower part 15cm Projection forwards e Place the drain hose through the hole on the wall e Insulate the connecting portion of coolant pipe with insulator e Connect the power cord e After adjustment the power cord and coolant pipes are placed into the space available under the indoor unit about 15cm e The projection of indoor unit must hook to the mounting plate Heat insulation pipe Coolant pipes Power cord Pull this to the front during the connection of coolant pipes to ease task P Bending upwards water Installation of Drain Hose Stagment Connected terminals of coolant pipes e Power cord A CAUITON Be sure that the drain hose is not loosely connected or bent A CAUTION You are free to choose the side left or right for the installation of drain hose Please ensure the smooth flow of condensed water of the indoor unit during installation Carelessness may result in water leakage lt E4340B gt In case of using in chilly area Especially in case that there are many snows by very cold in chilly area condensed water freezes on the base and may result not
9. ON Do not operate the unit for more than 5 minutes while the spindle of the service valve is closed Half union Z z Flare nut Male side Female side Wrench Torque wrench Tightening torque must be as shown in the table below g rain HOLE t Tts Push Push BUSH Outer diameter of pipe 6 35 1 4 12 7 1 2 6 35 1 4 12 7 1 2 Torque Nem kgfecm 13 7 18 6 140 190 44 1 53 99 450 550 19 6 24 5 200 250 29 4 34 3 300 350 12 3 15 7 125 160 DRAIN PIPE Small diameter side INSTALLATION OF COOLANT PIPES AND AIR REMOVAL e Install the outdoor unit horizontally and make sure that condensate drains away Large diameter side Valve head cap Small diameter side Large diameter side Valve core cap cr Pe oo A CAUTION e When removing flare nut of the indoor unit first remove the nut of small diameter side Otherwise the nut of big diameter side will fly out e Prevent water from entering into the piping when connecting e Be sure to tighten the flare nut to the specified torque with a torque wrench If the flare nut is overtightened it may split after sometime and may cause refrigerant leak e When using a control valve make sure that the packing is not deteriorated and avoid excessive tightening of the handle Otherwise gas may leak from the service valve 3 Removal Of Air From The Pipe And Gas Leakage Inspect
10. THE CHOICE OF MOUNTING SITE Please note the following matters and obtain permission from customer before installation A WARNING A WARNING The unit should be mounted at stable non vibratory location which can provide e The outdoor unit must be mounted at a location which can support heavy weight full support to the unit LL Otherwise noise and vibration will increase i e Carefully read through the procedures of proper installation before starting installation work The sales agent should inform customers regarding the correct operation of installation HITACHI HITACHI SPLIT UNIT AIR CONDITIONER INSTALLATION MANUAL a gt A CAUTION D e Do not expose the unit under direct sunshine or rain Besides ventilation must be good and clear of obstruction e The air blown out of the unit should not point directly to animals or plants e The clearances of the unit from top left right and front are specified as lt gt in figure below At least two sides must be clear for ventilation Be sure that the hot air blown out of the unit and noise do not disturb the neighbourhood e Place not exposed to strong wind Particularly on the rooftop of a building strong wind blows and the outdoor unit may be damaged e Do not install at a location where there is flammable gas steam oil and smoke The location must be convenient for water drainage e Place the outdoor unit and its connecting cord at least 1m away f
11. an injury Copper pipe X Please use exclusive tool for refrigerant R410 RAC X18HAK A mm Rigid Flaring Tool For R410A tool For R22 tool 6 35 1 4 0 0 5 1 0 12 7 1 2 0 0 5 1 0 2 Pipe Connection e Remove the flare nut from the pipe of the indoor unit by removing the flare nut female side with a spanner while holding down the half union male side with a spanner Do not crush the pipe while bending it e Apply refrigerant oil on the connection part After carrying out the center alignment and manual tightening of the flare nut tighten the flare nut securely with a torque wrench spanner Outer Diameter 2 CONDENSED WATER DISPOSAL OF OUTDOOR UNIT There is holes on the base of Outdoor unit for condensed water to exhaust In order to flow condensed water to the drain the unit is installed on a stand ora block so that the unit is 100mm above the ground as shown figure Join the drain pipe to one hole Cover the drain hole with a bush To install the bush put it on the drain hole as shown in the figure and press the both sides of the bush to fit into the hole After installation check whether the drain pipe and bush cling to the base firmly Service switch If the switch is pressed for more than 1 second the force cooling operation starts If the switch is pressed for additional more than 1 second the operation stops OUTDOOR UNIT A CAUTI
12. ection erminal cover F A WARNING The connecting cord must be fix with cord band Otherwise rain water may enter and cause short circuit Besides an external forcemay apply to the connection part of the connecting cord and could result in heat and fire The terminal cover and side cover must be installed after work is done F A CAUTION 4 IMPORTANT e Outdoor supply cords shall not be lighter than polychloroprene sheathed flexible cord with code designation 60245 IEC 57 Fuse Capacity 25A time delay fuse FINAL STAGE OF INSTALLATION lt E4340B gt heat insulator and then tied up with rubber strap e Please tie the pipe and power line together with plastic tape as shown in the figure of installation of both the indoor and outdoor units Then fix their position with holders e To enchance the heat insulation and to prevent water condensation please cover the outdoor part of the drain hose and pipe with insulation pipe e Completely seal any gap with putty protection pipe X Insulation material for pipe connection 2 Earth Line And Circuit Breaker A CAUITON e The earth line terminal of the outdoor unit is below the service valve e To avoid short circuit it is necessary to install circuit breaker depending on the mounting location of the unit e Do not place earth line near the following objects 1 Water pipe 2 Gas pipe There
13. he flow of refrigerant unscrew halfway e Tighten the cap of valve head Check and make sure that there is no gas leakage Valve Vacuum pump O Vacuum pump adapter Cap of valve core Hexagonal wrench key Cap of valve head Cap of valve head Works to be done when transferring or removing air conditioner From the viewpoint of global environment protection refrigerant should be recovered pumped down when the air conditioner is ransferred or removed Perform force cooling operation for about 5 minutes as a preliminary operation Tighten the spindle of the service valve at small diameter side in clockwise direction Continue the force cooling operation for another 1 2 minutes and then tighten the spindle of the service valve at large diameter side in clockwise direction Stop the force cooling operation Securely screw in the power cord and connecting cord so that it will not get loose or disconnect Tightening torque reference value 1 2 to 1 6 N m 12 to 16 kgf cm Excessive tightening may damage the interior of the cord requiring replacement Please leave the ball valve fully open at all times CONNECTION OF POWER CORD Connecting cord Bo Connecting cord Ro Gas Leakage Inspection Please use gas leakage detector to check if leakage occurs at connection of Flare nut as shown on the right If gas leakage occurs further tighten the connection to stop leakage Be s
14. ion Valve head cap for the service valve at small diameter side Procedures of Wiring Indoor Unit Detail of Cutting the Connecting Cord Indoor Unit Outdoor Unit 30mm Green Yellow Momm Line cord T E 02 0 Strip wires AC 220 19 50Hz Outdoor Unit Connecting Cord 01 6 or 92 0 Green Yellow Strip wires From the viewpoint of global environment protection air purge type should be vacuum pump method e Remove the valve head cap of the service valve Remove the cap of valve core and connect the charge hose Connect the vacuum pump adapter to the vacuum pump and connect the charge hose to the adapter A WARNING If the supply cord is damaged it must be replaced by a special cord Maker s service parts available from the manufacturer or its service agent The naked part of the wire core should be 10mm fix it to the terminal tightly Then try to pull the individual wire to check if the contact is tight Improper insertion may burn the terminal Be sure to use only wire specified for the use of air conditioner Please refer to the manual for wire connection the wiring technique should meet the standard of the electrical installation e Leave some space in the connecting cord for maintenance purpose and be sure to secure it with
15. is danger of catching fire 3 The earth line of lightning conductor and telephone short circuit may occur during lightning Power Source A WARNING e Do not alter the plug of power cord C Do not make extension to the power cord A CAUTION e Please use a new socket Accident may occur due to the use of old socket because of poor contact e Please plug in and then remove the plug for 2 3 times This is to ensure that the plug is completely plugged into the socket e Keep additional length for the power cord and do not render the plug under external force as this may cause poor contact e Do not fix the power cord with U shape nail Operation Test e Please ensure that the air conditioner is in normal operating condition during the operation test e Explain to your customer the proper operation procedures as described in the user s manual
16. per insertion and loose contact may cause over heating and fire Please use the specified components for installation work Otherwise the unit may collapse or water leakage electric shock fire or stronger vibration may occur 2 B PAE be Be sure to use the specified piping set for R410A Otherwise this may result in broken copper pipes or faults direct ina left Gr i ht When installing or transferring an air conditioner to another location make sure that air other than the specified refrigerant R410A E daar pa piping d i A does not enter the refrigeration cycle If other air should enter the pressure level of the refrigeration cycle may increase abnormally Drain pipe 1 M eid piping ane which could result in a rupture and injury or right sideways piping Be sure to ventilate fully if a refrigerant gas leak while at work If the refrigerant gas comes into contact with fire a poisonous gas may occur rae After completion of installation work check to make sure that there is no refrigeration gas leakage If the refrigerant gas leaks into the room coming into contact with fire in the fan driven heater space heater etc a poisonous gas may occur Heat insulating materials Unauthorized modifications to the air conditioner may be dangerous If a breakdown occurs please call a qualified air conditioner technician or electrician Improper repairs may result in water leakage electric shock and fire etc
17. rom the antenna or signal line of television radio or telephone This is to avoid noise interference Do not install the indoor unit in a place where small animals may build their nests If small animal goes inside the unit and touches the electrical parts failure of the unit smoke or fire may be caused Request your customer to keep the surrounding of the unit clean A CAUTION e No nearby heat source and no obstruction near the air outlet is allowed e The clearance distances from top right and left are specified as in figure below e The location musteb convenient for water drainage and pipe connection with the outdoor unit e Do not install at a location where there is flammable gas steam oil and smoke There is a risk of fire explosion deterioration of resin and or damage e To avoid interference from noise please place the unit and its remote controller at least 1m from the radio and television e To avoid any error in signal transmission from the remote controller please put the controller far away from high frequency machines and high power wireless systems Lighting fixtures with electronic starters may shorten the reception distance and may even interfere with the signal being received he installation height should be at least 2 3m or more from the floor ei The indoor unit air outlet should be installed at least 1 5m away from fire alarm Tools Needed For Installation Work mark is tool exclusive use
18. th tape A circuit breaker must be installed in the house distribution box for the direct connected power supply cables to the outdoor unit In case of other installations a main switch with a contact gap or more than 3mm has to be installed Without a circuit breaker the danger of electric shock exists Do not install the unit near a location where there is flammable gas The outdoor unit may catch fire if flammable gas leaks around it e Please ensure smooth flow of water when installing the drain hose Improper installing may wet your funiture Z a O O Q zZ An IEC approved power cord should be used A CAUITON e drain hose can be installed from the lefe or right of the indoor unit When installing the indoor unit the mounting board must be fixed horizontally or slightly tilted down towards the side of drain hose If it is tilted above the side of the drain hose condensed water may overflow Direct Mounting On The Wall e Please use hidden beams in the wall to hold the mounting plate 2 g 8 Wall hol Drain hose Drain hose Screw at the positions near the upper and lower hooks where the indoor unit is hung Use more than 6 screws for fixing Procedures of Installation and Precautions e Procedures to fix the mounting plate 1 Drill holes on wall As shown below 3 Fix the hanger on wall with 4 1 x 32 screw
19. the cord band Secure the connecting cord along the coated part of the wire using the cord band Do not exert pressure on the wire as this may cause overheating or fire There is a AC voltege of 220V between the A and B terminals Therefore before servicing be sure to remove the plug from the AC outlet Valve head cap for the service valve at large diameter side Fully tighten the Hi shuttle of the manifold valve and completely unscrew the Lo shuttle Run the vacuum pump Adapter is switched on e After pumping for about 10 15 minutes completely loosen the Lo shuttle and switch off the vacuum pump Adapter is switched off Cap of valve core Loosen the spindle of the service valve with small diameter by 1 4 turn and tighten the spindle immediately after 5 to 6 seconds Remove the charging hose from the service valve Meter showing pressure Make sure the meter ___ _ x reaches 0 1MPa 76cmHg during pumping AIR REMOVAL XX Wiring Of The Indoor Unit e For wire connection of the Indoor unit you need to remove the front cover the low cover under the body of the unit and terminal cover e Remove the cover from the terminal base and screw the cable Body of service valve When pumping starts slightly loosen the flare nut to check if air sucked in Then tighten the flare nut Unscrew the spindle of both the service valves in anticlockwise direction to allow t
20. ure to use R410A detector When putting two connecting cords through the band Insulating plate Cord band a gt e Lu oc ES lt m Z lt e2 W A Z lt q e e 8 LL e z q a a 2 V Connecting cord A WARNING After wiring the indoor unit make sure to reattach the terminal cover After remove the screw and terminal cover and put the connecting cords and fix the terminal cover with screw Terminal cover e Wiring for the horizontal piping from the right side Method to remove the low cover 1 Insulation And Maintenance Of Pipe Connection 3 Power Source And Operation Test e The connected terminals should be completed sealed with Not to interfere with the drain hose fold the cable at e Pull at themand qin the directionsas CONNECTION OF POWER CORD Power Electric box cord Form the cable properly so that the low cover won t touch the cable in installation the drain hose side of the electric box as shown in the left figure and pass the cable just over the electric box and pull it out shown by arrows to remove the cover Piping and drain hose layout Wiring of the Outdoor Unit Please remove the side cover and terminal cover for wiring conn
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