Hitachi RAS-VX13CET Installation Manual

● The contents of this section are vital to ensure safety. Please pay special attention to the following sign. WARNING ........ Incorrect methods of installation may cause death or serious injury. CAUTION ......... Improper installation may result in serious consequence. Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating the unit as described in the user’s guide. HITACHI SPLIT-UNIT AIR CONDITIONER INSTALLATION MANUAL Indoor Unit Outdoor Unit RAS-VX13CET RAC-VX13CET SAFETY PRECAUTION ! ! THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation). WARNING ! ●The unit should be mounted at stable, non-vibratory location which can provide full support to the unit. WARNING ! ● The outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase. CAUTION ! ●No nearby heat source and no obstruction near the air outlet is allowed. ●The clearance distances from top, right and left are specifi ed in fi gure below. ●The location must be convenient for water drainage and pipe connection with the outdoor unit. ●To avoid interference from noise please place the unit and its remote controller at least 1m from the radio, television and inverter type fl uorescent lamp. ●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. ●The installation height of indoor unit must be 2.3m or more. CAUTION ! ●Do not expose the unit under direct sunshine or rain. Besides, ventilation must be good and clear of obstruction. ●The air blown out of the unit should not point directly to animals or plants. ● The clearances of the unit from top, left, right and front are specifi ed in fi gure below. At least three of the above sides must be open air. ●Be sure that the hot air blown out of the unit and noise do not disturb the neighbourhood. ●Do not install at a location where there is fl ammable gas, steam, oil and smoke. ●The location must be convenient for water drainage. ●Place the outdoor unit and its connection wire at least 1m away from the antenna or signal line of television, radio or telephone. This is to avoid noise interference. ●Do not install outdoor unit facing strong wind direction. It may damage the fan motor. ●Do not install the outdoor 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 fi re may be caused. Request your customer to keep the surrounding of the unit is clean. INDOOR UNIT Figure showing the Installation of Indoor and Outdoor Unit. OUTDOOR UNIT FOR SERVICE PERSONNEL ONLY ●The difference in height between the indoor and outdoor unit should be kept below 10m. ●The connecting pipe, no matter big or small, should all be insulated with insulation pipe and then wrapped with vinyl tape. (The insulator will deteriorate if it is not wrapped with tape). The connection of insulated drain hose. Please use insulated drain hose for the indoor piping (commercial product). Be sure to completely seal any gap. Direction of Piping Dimension of Mounting Stand of the outdoor unit (unit : mm) WARNING ! ● Please request your sales agent or qualifi ed technician to install your unit. Water leakage, short circuit or fi re may occur if you do the installation work yourself. ● Please observe the instructions stated in the installation manual during the process of installation. Improper installation may cause water leakage, electric shock and fi re. ● 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 collapse and impose danger. ● Observe the rules and regulations of the electrical installation and the methods described in the installation manual when dealing with the electrical work. Use power cables approved by the authorities of your country. ● Be sure to use the specifi ed wire for connecting the indoor and outdoor units. Please ensure that the connections are tight after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating and fi re. ● Please use the specifi ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock and fi re may occur. ● Be sure to use the specifi ed piping set for R410A. Otherwise, this may result in broken copper pipes or faults. ● When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture may be caused. ● Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fi re, a poisonous gas may occur. ● 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 fi re in the fan-driven heater, space heater, etc., a poisonous gas may occur. ● Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs please call a qualifi ed air conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and fi re, etc. There are 6 directions allowed, namely, horizontally perpendicular to the unit, vertically down from right, horizontally out from right, horizontally out to left, horizontally out to right, vertically down from left. The refrigerant piping should be insulated with the enclosed insulation pipe. (If the insulator is insuffi cient, please use commercial products). ●+ – Screwdriver ● Measuring Tape ● Knife ● Saw ● Pipe Cutter ● Hexagonal Wrench Key ( 4mm) ●Power Drill (ø 65mm ~ ø 80mm) ●Vacuum Pump ●Pliers or Wrench ● Torque Wrench ●Vacuum Pump Adaptor ●Flare Tool ●Gas Leakage Detector ●Manifold Valve ● Charge Hose ●Reammer ●File ●Carefully read through the procedures of proper installation before starting installation work. ●The sales agent should inform customers regarding the correct operation of installation. Tools Needed For Installation Work ! ● A circuit breaker or fuse (13A) must be installed. Without a circuit breaker or fuse the danger of electric shock exists. The external switch shall be incorporated to completely disconnect from power supply. It should disconnect all poles, and a contact separation of at least 3mm must be present. ● Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if fl ammable gas leaks around it. ● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist fl ows to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance and may deform and in the worst case, break the plastic parts of the indoor unit. ● Please ensure smooth fl ow of water when installing the drain hose. ● Piping shall be suitable supported with a maximum spacing of 1m between the supports. CAUTION Screw for Mounting Plate (4.1x32) Names of Indoor Components Screw for holder of Remote Controller (3.1x16) AAA Size Battery Holder for Remote Controller Mounting Plate Qty No. Component’s Name 1 6 1 2 2 Remote Controller Purifying Filter 1 2 3 4 5 6 7 1 2 Installation of Hanger, Wall Penetration and Installation of Protection Pipe 1 CAUTION ! ●The draining of the water container inside the indoor unit can be done from the left. Therefore the mounting plate must be fi xed horizontally or slightly tilted towards the side of drain hose. Otherwise, condensed water may overfl ow the water container. Direct Mounting On The Wall ●Please use hidden beams in the wall to hold the mounting plate. Wall Penetration and Installation of Protection Pipe ●Drill a ø 65mm hole on wall which is slightly tilted towards the outdoor side. Drill the wall at a small angle. ●Cut the protection pipe according to the wall thickness. ●Empty gap in the sleeve of protection pipe should be completely sealed with putty to avoid dripping of rain water into the room. INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION ●The refrigerating pipes should be adjusted to fit into the hole on the wall and then ready for further connection. ●The terminals of 2 connected pipes must be covered with insulator used for terminal connection. Then the pipes are wrapped with insulation pipe. ●Connect the connecting cord after removing electrical cover. (Refer to “CONNECTION OF POWER CORD”) ●After adjustment, fi t the connecting cord and pipes into the space available under the indoor unit. ! CAUTION ●The rubber strap used for fi xing the insulator should not be tied with great force. Otherwise, this will damage heat insulation and causes water condensation. THE CONNECTION OF REFRIGERATING PIPE DURING THE INSTALLATION OF INDOOR UNIT Preparation To Install Refrigerating Pipes ! CAUTION ●Please fi x in the plastic core after fl aring to avoid copper chips entering the pipes. CAUTION ! You are free to choose the side (left or right) for the installation of drain hose. Please ensure the smooth fl ow of condensed water of the Indoor unit during installation. (Carelessness may result in water leakage.) ! CAUTION Be sure that the drain hose is not loosely connected or bend. 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. Unless it seals completely, any air with high humidity flows from outdoor and dew may drop. ! WARNING ●The refrigerating pipes and connecting cord arrangement are attached. Installation of Drain Hose 3 Installation 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 forwards. ●Place the drain hose through the hole on the wall. ●Wrap the refrigerating pipes with insulation pipe after connecting refrigerating pipe. ●Connect the connecting cord after removing electrical cover. (Refer to “Connection of Power Cord”) ●After adjustment, the connecting cord and refrigerating pipes are placed into the space available under the Indoor unit. ●The projection of Indoor unit must hook to the mounting plate. INDOOR UNIT P Heat insulation pipe Connecting cord Refrigerating pipe Pull this to the front during the connection of refrigerating pipes to ease task. Procedures of Installation and Precautions ●Procedures to fi x the mounting plate. 1. Drill holes on wall. 2. Push plug into the holes. 3. Fix the mounting plate on wall (As shown below) (As shown below) with 4.1 x 32 screw (As shown in fi gure below) ●Procedures to fi x the holder of remote control. 1. Drill holes on wall. 2. Push plug into the holes. (As shown below) (As shown below) Installation of the Indoor Unit 2 VERTICALLY DOWNWARD PIPING Preparation ●Connect connecting cord. ●Pull out the pipe, connecting cord and drain hose. Installation ●The upper part of the indoor unit is hanged on the mounting plate. ●The projection at the lower part of the indoor unit is hooked onto the 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 noise. ! CAUTION HORIZONTAL PIPING Preparation Change of Drain Hose and Installation Procedures. ●Exchange the location of drain hose and drain cap during horizontal piping as shown in fi gure below. Be sure to plug in the drain hose until the insulating material folds upon itself. ●Please use pliers to pull out the drain cap. (This is an easier way to remove the drain cap). ● Remove the cap for drain hose installation ! CAUTION Condensed water may leak out if not inserted properly. INS RAS-VX13CET (EN1) 1 INS RAS-VX13CET (EN1) 1 4/29/15 12:11 PM 4/29/15 12:11 PM

Please use gas leakage detector to check if leakage occurs at the connection of Flare nut as shown on the right. If gas leakage occurs, further tighten the connection to stop leakage. Preparation of Pipe 1 ● Use a pipe cutter to cut the copper pipe. ● Jagged edge will cause leakage. ● Point the side to be trimmed downwards during trimming to prevent copper chips from entering the pipe. ● Before fl aring, please put on the fl are nut. Pipe Connection 2 INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL CAUTION ! WARNING ● If you cannot attach the side plate due to the connecting cord, press the connecting cord in direction to the front panel to fi x it. ● Be sure that the hooks of the side plate is fi xed in certainly. Otherwise water leakage may occur and this causes short circuit or faults. Checking for the electric source and the voltage range ● Before installation, the power source must be checked and necessary wiring work must be completed. To make the wiring capacity proper, use the wire gauges list below for the lead-in from a pole transformer and for the wiring from a switch board of fuse box to the outlet in consideration of the locked rotor current. ● Investigate the power supply capacity and other electrical conditions at the installation location. Depending on the model of room air conditioner to be installed, request the customer to make arrangements for the necessary electrical work etc. The electrical work includes the wiring work up the outlet. In localities where electrical conditions are poor, use of a voltage regulation is recommended. ● Install outlet for the room air conditioner within the reaching range of the line cord. ● THIS APPLIANCE MUST BE EARTHED. Wiring Of The Outdoor Unit ● Please remove the side plate for wire connection. ! WARNING ! CONNECTION OF POWER CORD WARNING ! Wiring Of The Indoor Unit ● For wire connection of the Indoor unit, you need to remove front panel and electrical cover. Method to remove front panel ● Please refer to Instruction Manual – “Removing the Front Panel” under “Cleaning of Front Panel”. ● The naked part of the wire core should be 10 mm and fi x 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 power cables approved from the authorities in your country. For example in Germany: Cable type: NYM 3x1.5mm2, (fuse = 16A time delay) ● Please refer to the following for wire connection to the terminals of the units. The cabling must meet the standards of electrical installation. ● There is a AC voltage of 220V between the L and N terminals. Therefore, before servicing, be sure to remove the plug from the AC outlet or switch off the main switch. IMPORTANT 13A Circuit Breaker Removal Of Air From The Pipe And Gas Leakage Inspection 3 Procedures of using Vacuum Pump for Air Removal AIR REMOVAL When the meter reaches - 101KPa (-76cmHg) during pumping, fully tighten the shuttle. Lo Hi Meter showing pressure Closed Manifold valve Vacuum pump Valve Charge hose Valve When pumping starts, slightly loosen the fl are nut to check of air sucked in. Then tighten the fl are nut. As shown in right fi gure, remove the cap of valve core. Then, connect the charge hose. Remove the cap of valve head. Connect the vacuum pump adapter to the vacuum pump and connect the charge hose to the adapter. Fully tighten the “Hi” knob of the manifold valve and completely unscrew the “Lo” knob. Run the vacuum pump for about 10~15 minutes, then completely tighten the “Lo” knob and switch off the vacuum pump. 2 Completely unscrew the spindle of the service valve (at 2 places) in anti-clockwise direction to allow the fl ow of refrigerant (using Hexagonal Wrench key). Re-cap the service valve and tighten using wrench. Check the cap’s periphery if there is any gas leakage. The task is then completed. Remove the charge hose and tighten the cap of valve core. Check the cap’s periphery if there is any gas leakage. 4 5 1 3 OUTDOOR UNIT ● Please mount the Outdoor unit on 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. Please face this side (suction side) of the unit to the wall. Please remove side cover when connecting the piping and connecting cord. Outer Diameter (mm) 6.35 (1/4) 9.52 (3/8) 12.70 (1/2) 15.88 (5/8) 1.0 ~ 1.5 1.0 ~ 1.5 1.0 ~ 1.5 1.0 ~ 1.5 Clutch type A (mm) 1.5 ~ 2.0 1.5 ~ 2.0 1.5 ~ 2.5 1.5 ~ 2.5 Wing nut type Thickness (mm) 0.8 0.8 0.8 1.0 0.0 ~ 0.5 0.0 ~ 0.5 0.0 ~ 0.5 0.0 ~ 0.5 Flare tool for R410A Clutch type Conventional fl are tool Outer diameter of pipe 6.35 (1/4") 9.52 (3/8") 12.7 (1/2") 6.35 (1/4") 9.52 (3/8") 12.7 (1/2") Valve core cap Torque N.m (kgf ● cm) 13.7 ~ 18.6 (140 ~ 190) 34.3 ~ 44.1 (350 ~ 450) 44.1 ~ 53.9 (450 ~ 550) 19.6 ~ 24.5 (200 ~ 250) 19.6 ~ 24.5 (200 ~ 250) 29.4 ~ 34.3 (300 ~ 350) 12.3 ~ 15.7 (125 ~ 160) Small dia. side Large dia. side Valve head cap Small dia. side Large dia. side CAUTION ! In case of removing fl are nut of an Indoor unit, fi rst remove a nut of small diameter side, or a seal cap of big diameter side will fl y out. Prevent water from entering into the piping when working. ● Recommend to use R410A fl aring tool ! CAUTION Note: ● Outdoor supply cords shall not be lighter than polychloroprene sheathed fl exible cord, 60245 IEC 57. Pull downward Vacuum pump adapter Method to remove electrical cover ● Remove the screw and electrical cover. ● Insert the connecting cord (1, 2, 3) from the back of unit. ● Fixed the wire to terminal wires fi rmly as shown in fi gure at right side. Electrical cover Connecting cord Screw FINAL STAGE OF INSTALLATION Insulation And Maintenance Of Pipe Connection 1 ● The connected terminals should be completed sealed with heat insulator and then tied up with rubber strap. ● Please tie the pipe and power line together with vinyl tape as shown in the fi gure showing the installation of indoor and outdoor units. Then fi x their position with holders. ● To enhance the heat insulation and to prevent water condensation, please cover the outdoor part of the drain hose and pipe with insulation pipe. ● Completely seal any gap with putty. Installation Of Remote Controller 2 Power Source And Operation Test 3 ● The remote controller can be placed in its holder which is fi xed on wall or beam. ● To operate the remote controller at its holder, please ensure that the unit can receive signal transmitted from the controller at the place where the holder is to be fi xed. The unit will beep when signal is received from the remote controller. The signal transmission is weaken by the fl orescent light. Therefore, during the installation of the remote control holder, please switch on the light, even during day time, to determine the mounting location of the holder. Power Source CAUTION ! ● Please use a new socket. Accident may occur due to the use of old socket because of poor contact. ● 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. ● Keep additional length for the power cord and do not render the plug under external force as this may cause poor contact. ● Do not fi x the power cord with U-shape nail. Operation Test ● Please ensure that the air conditioner is in normal operating condition during the operation test. ● Explain to your customer the proper operation procedures as described in the user’s manual. The controller should be insert from top into bottom side of the holder as shown in fi gure beside. Pump Down Method When Reuse Existing Piping (R22 Model) for R410A Model ● Compressor oil of R22 model is insoluble in compressor oil of R410A model. The mixing of compressor oil may cause damage of compressor. Possibility of Mixing ● Reuse of piping of R22 model is dangerous because of its compressor oil. ● When reuse piping of R22 model, pump down must be carried out properly to ensure compressor oil which is remained inside piping is collected away. To Reuse Old Piping ● Piping of R22 model can be reused only when air-conditioner is properly pumped down. ● The purpose of pump down is to collect back the compressor oil (which is mixed with refrigerant and circulating inside refrigeration cycle) properly into the outdoor unit of air conditioner. Reuse of piping R-22 model only apply if previous model is Hitachi and proper pump down method is used. CAUTION ! Proper Pump Down Method 1 Operate air conditioner at cooling mode for 10~15 minutes 2 After 10~15 minutes of pre operation, close 2s valve. After 3 minutes, close 3s valve. 3 Take out air conditioner unit. 4 Install New Refrigerant air conditioner Most Important Process Purpose: To make the oil & refrigerant mix together. They are in separated condition when air conditioner is stopped. Mixed refrigerant & oil will be collected into outdoor unit. It is advisable to fl ush the piping with R410A to avoid any contamination remain before new installation. Wire length up to 25m Wire gauge 1.5mm2 IMPORTANT 1) Please ensure tape attached at the unit for transportation are removed before do installation. (Discolouring or paint damage might be happened if expose to the sun). 2) Please make sure to remove all spacers inside the unit. ● Open the Top, Back, Side cover and Cabinet of the unit. ● Pull out the spacers inside. (Spacers are only for transportation purpose). If not remove, vibration and noise will occur. ! CAUTION Top cover Back cover Tape Tape Side cover Procedures of Wiring In case that power is supplied from Indoor Unit When removing the connecting wires for the indoor unit, please remove the low cover panel in front of the unit. Outdoor Unit Detail of cutting the connecting cord Indoor Unit Earth terminal 2 1 3 Connect the earth cord After remove the screw and band, put the connecting cords and fi x the band with screw. ● How to check pipe bending. – Compare bended pipe with the picture below. – If bended pipe is not good enough, cut bended area and bend it again. a all areas are smooth, no notching area b no scratch or mark inside c all have the same length d phase of bending is too long e slanting f there are scratches around bending area g crack h different length i sample of bending pipe cannot be used INS RAS-VX13CET (EN2) 1 INS RAS-VX13CET (EN2) 1 4/29/15 12:12 PM 4/29/15 12:12 PM