AM✴✴✴XMDEH Series AM✴✴✴XMDGH Series Air Conditioner installation manual imagine the possibilities Thank you for purchasing this Samsung product. DB68-03941A-10 Contents Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Outdoor unit type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Deciding to where to install the outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Installation and base ground work for an outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Refrigerant pipe installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Wiring work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Grounding work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Setting indoor unit option switch and key function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Inspection and check operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Charging refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Pump Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Checking lists after finishing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Trial operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 2 Safety precautions Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment. ENGLISH WARNING t Always disconnect the air conditioner from the power supply before servicing it or accessing its internal components. t Verify that installation and testing operations are performed by qualified personnel. t Verify that the air conditioner is not installed in an easily accessible area. General information fCarefully read the content of this manual before installing the air conditioner and store the manual in a safe place in order to be able to use it as reference after installation. fFor maximum safety, installers should always carefully read the following warnings. fStore the operation and installation manual in a safe location and remember to hand it over to the new owner if the air conditioner is sold or transferred. fThis manual explains how to install an indoor unit with a split system with two SAMSUNG units. The use of other types of units with different control systems may damage the units and invalidate the warranty. The manufacturer shall not be responsible for damages arising from the use of non compliant units. fThe manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection of electric and requirements set forth in the “Operating limits” table, included in the manual. Making such changes or improper connections may damage the units and invalidate the warranty. fThe air conditioner should be used only for the applications for which it has been designed: the indoor unit is not suitable to be installed in areas used for laundry. fDo not use the units if damaged. If problems occur, switch the unit off and disconnect it from the power supply. fIn order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch and contact SAMSUNG’s technical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very noisy. fAlways remember to inspect the unit, electric connections, refrigerant tubes and protections regularly. These operations should be performed by qualified personnel only. fThe unit contains moving parts, which should always be kept out of the reach of children. fDo not attempt to repair, move, alter or reinstall the unit. If performed by unauthorized personnel, these operations may cause electric shocks or fires. fDo not place containers with liquids or other objects on the unit. fAll the materials used for the manufacture and packaging of the air conditioner are recyclable. fThe packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with current laws. fThe air conditioner contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle, the air conditioner must be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly and safely. fThis appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance. fWhen the product operates in heat mode during winter time, it operates protection mode when the outdoor temperature drops below 0 °C. Therefore, supply the power during winter time. If the power is not supplied, compressor protection mode will not operate and cause product malfunction. 3 Safety precautions Installing the unit IMPORTANT: When installing the unit, always remember to connect first the refrigerant tubes, then the electrical lines. Always disassemble the electric lines before the refrigerant tubes. fUpon receipt, inspect the product to verify that it has not been damaged during transport. If the product appears damaged, DO NOT INSTALL it and immediately report the damage to the carrier or retailer (if the installer or the authorized technician has collected the material from the retailer.) fAfter completing the installation, always carry out a functional test and provide the instructions on how to operate the air conditioner to the user. fDo not use the air conditioner in environments with hazardous substances or close to equipment that release free flames to avoid the occurrence of fires, explosions or injuries. fOur units should be installed in compliance with the spaces shown in the installation manual, to ensure accessibility from both sides and allow repairs or maintenance operations to be carried out. The unit’s components should be accessible and easy to disassemble without endangering people and objects. fFor this reason, when provisions of the installation manual are not complied with, the cost required to access and repair the units (in SAFETY CONDITIONS, as set out in prevailing regulations) with harnesses, ladders, scaffolding or any other elevation system will NOT be considered part of the warranty and will be charged to the end customer. Power supply line, fuse or circuit breaker fAlways make sure that the power supply is compliant with current safety standards. Always install the air conditioner in compliance with current local safety standards. fAlways verify that a suitable grounding connection is available. fVerify that the voltage and frequency of the power supply comply with the specifications and that the installed power is sufficient to ensure the operation of any other domestic appliance connected to the same electric lines. fAlways verify that the cut-off and protection switches are suitably dimensioned. fVerify that the air conditioner is connected to the power supply in accordance with the instructions provided in the wiring diagram included in the manual. fAlways verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric specifications and with the instructions provided in the wiring scheme. Always verify that all connections comply with the standards applicable to the installation of air conditioners. fDevices disconnected from the power supply should be completely disconnected in the condition of overvoltage category. 4 Outdoor unit type Model ENGLISH Shape 1phase AM040✴XMDEH AM050✴XMDEH AM060✴XMDEH 3phase AM040✴XMDGH AM050✴XMDGH AM060✴XMDGH Cooling and Heating Installation combination fYou must install the indoor unit that uses R-410A only. fIf sum capacity of the combined indoor units exceeds the capacity of an outdoor unit, the capacity of each indoor unit is reduced below the rated capacity. Therefore, keeping the combination of indoor units within the capacity of an outdoor unit is recommended. Outdoor unit Outdoor unit capacity (HP) The maximum number of connectable indoor units Total capacity of the connected indoor units (kW) AM040✴XMD✴H Series 4 6 5.6~14.5 AM050✴XMD✴H Series 5 8 7.0~18.2 AM060✴XMD✴H Series 6 9 7.8~20.2 5 Deciding to where to install the outdoor unit Decide the installation location based on the following condition and obtain the user’s approval. fAvoid a place that may disturb your neighbor. Noise may occur from the outdoor unit and the discharged air may run into the neighborhood. (Be careful of the operation time in a residential area) fInstall the outdoor unit on a hard and even area that can support its weight. fChoose a flat place where rainwater does not settle or leak. fChoose a place that will avoid strong winds. fChoose a place that is well ventilated and allows enough space for repairs and service. (Discharge duct can be purchased privately.) fChoose a place where the connection of refrigerant pipe between an indoor unit and outdoor unit is within allowed distance. fMake sure that the condensed water dripping from the drain hose runs out properly and safely. fChoose a place where flammable gas does not leak. fChoose a place where the unit could not come into contact with snow and rain. fWhen installing the outdoor unit near sea shore, make sure it is not directly exposed to sea breeze. - When installing the outdoor unit near sea shore, consult the qualified installer since the places above require additional measures for corrosion resistance. (You should remove salt and dust of a heat exchanger at least once a year.) When installing an outdoor unit near sea shore fWhen installing an outdoor unit near sea shore, it should be placed behind a building or surrounded by wind protection wall. fInstall the outdoor unit in a place where water can drain smoothly. Outdoor unit Sea breeze Sea breeze Sea Sea Protection wall Sea breeze Sea 6 Outdoor unit Outdoor unit ❋ Protection wall should be constructed with a solid material such as concrete to block the sea breeze and the height and the width of the wall should be 1.5 times larger than the size of the outdoor unit. (Also, allow over 700 mm space between the protection wall and the outdoor unit for ventilation of exhaust air.) CAUTION Indoor Unit ENGLISH t Install the indoor unit away from any interfering sources such as radio, computer, stereo equipment and also select a place where the electrical wiring work and an indoor unit installation are possible. - Especially keep the unit at least 3 m away from the electrical equipment in an area where weak electromagnetic waves are generated and install the protection tube to protect the main power cable and communication cable. - Make sure that there is no equipment that genetrates electromagnetic waves. If so, malfunction of the control system may occur due to the effect of the electromagnetic wave. (For example: The remote control sensor of the indoor unit may not have good reception in an area with fluorescent lamp style lighting.) t Make sure the outdoor unit is installed in a safe place where it will not be obstructed by snowfall. The frame should be installed in a place where the air inlet and heat exchanger of the unit are not buried in the snow. t A ventilation system may be required when the outdoor unit is installed in a closed space or room, even though R-410A is not poisonous or flammable. t Install railing around the outdoor unit to prevent it falling when the unit is installed on a high place such as the roof of the building. t Avoid installing the units in places near an exhaust pipe and ventilating opening exposed to corrosive gas, oxides of sulfur, ammonia gas or sulfur gas herbicides. (These places need additional anticorrosive treatments. Please contact manufacture to avoid corroding copper pipes or soldered parts.) t There shouldn’t be any inflammable material such as wood and oil around the indoor unit. Otherwise, external fire may spread to the product. t According to the condition of power supply, electric noise or unstable voltage can occur malfunction of electric parts or control system. (At the ship or places using power supply from electric generator… etc) Remote Control 1 m or more 1 m or m ore Breaker ore 1.5 m or m Breaker ore or m ore m 1.5 or m m 1.5 more 3 m or Outdoor Unit Stereo fMake sure that the water dripping from the drain hose runs away correctly and safely. fYou should repaint or protect the damaged part so that the paint of the cabinet does not peel off and become rusty during installation. When the cabinet becomes rusty, the life of an outdoor will be reduced. 7 Installation location fMake a space for ventilation and service as seen in the picture. fWhen multiple outdoor units are combined for installation, allow enough space for ventilation against a wall. If the ventilation space is not allowed, product malfunction may occur. fThe side with logo is the front side of the outdoor unit. ❋ Figure Description Top view Side view Back side : Air intake Front side : Air outlet Back side : Air intake Front side : Air outlet t , Air flow direction. When installing 1 outdoor unit ❋ When the air outlet is toward the wall (Unit : mm) 1500 or more 300 or more ❋ When the air outlet is opposite the wall 2000 or more 150 or more 1500 or more 300 or more ❋ When 3 sides of the outdoor unit are blocked by the wall ❋ The upper part of the outdoor unit is blocked and the air outlet is toward the wall 600 or more 300 or more 300 or more 1500 or more 500 or more ❋ The upper part of the outdoor unit is blocked and the air ❋ When the walls are blocking front and the rear of the outlet is opposite the wall outdoor unit 8 When installing more than 1 outdoor unit ❋ When 3 sides of the outdoor unit are blocked by the wall 300 or more 600 or more 600 or more ENGLISH 300 or more (Unit : mm) 600 or more 600 or more 600 or more 1500 or more 300 or more ❋ When the walls are blocking front and the rear of the outdoor units ❋ When front and rear side of the outdoor unit is toward the wall 1500 or more 600 or more 3000 or more 3000 or more 300 or more t Should adopt bar type louver. Don’t use a type of rain resistance louver. WARNING [Bar type louver] [Rain resistance louver] t Louver specifications. - Angle criteria : less than 20˚ - Opening ratio criteria : greater than 80% 9 Installation location Moving the Outdoor Unit fSelect the moving route in advance. fBe sure that moving route is safe from the weight of the outdoor unit. fDo not slant the product more than 30˚ when carrying it. (Do not lay the product down sideways.) fThe surface of the heat exchanger is sharp. Be careful not to get injured while moving and installing. When moving with a crane or wire rope fWhen moving an outdoor unit to a higher place such as the rooftop. - Fasten the wire rope as seen in the picture. - Move the outdoor unit with the product packed to prevent possible product damage during the transportation. Wire rope / straps Wood palette When moving an outdoor unit with hands fMoving the outdoor unit by lifting up and carrying due to the short travel distance. - Two people should carry the outdoor unit by holding transportation handle. - Be careful not to damage the heat exchanger of the rear side of the outdoor unit during transportation. - Be careful not to get hurt by the sharp surface of the heat exchanger. Installation and base ground work for an outdoor unit fInstall the outdoor unit 150 mm higher than the base ground and install the drain hole to connect the pipe to the drainage. fWhen the front fan of an outdoor unit is installed in a place where the average snowfall is more than 150 mm, the discharge duct should be attached to the outdoor unit. fThe concrete foundation should be 1.5 times larger than bottom of the outdoor unit. fIt is necessary to install wire mesh or steel bar when outdoor units are installed on a soft foundation. fWhen installing multiple outdoor units at the same place, install the Outdoor unit H beam on the base ground. (When installing a number of outdoor units, you can install it on the base ground.) Anchor bolt fInstall the H beam(150 mm x 150 mm x t10 : basic specification) or Nut, Spring 20 mm vibration absorption frame to jut out from the base ground. Square pad washer fAfter installing the H beam, apply corrosion protection. fInstall a square pad(t=20 mm or more) to prevent vibration from the H beam outdoor unit onto the base ground. Place the outdoor unit on the A H beam and fix it with the bolt, nut and washer. (Fix with M10 basic 75 mm or more anchor bolt, nut and washer.) A+10~20 mm or more 10 Base ground work Drain hole Install the outdoor unit horizontally on the ground 150 mm or more 150 mm or more ENGLISH < When installing on the roof > < When installing on the ground > fThe outdoor unit should be supported within the range of measurement below for base ground work. (Unit : mm) 360 384 330 Anchor bolt position 620 940 fWhen the outdoor unit needs to be supported, fix it with wire as shown in the picture. - Slightly unwind the four screws on the cover top of the outdoor unit. - Wind wires round the four screws and fasten the screws again. - Fix the wires to the ground. CAUTION t If the outdoor unit is not fixed securely, product may fall and it might cause loss of life or property damage. t Do not install the outdoor unit on a wood palette. t Fix the outdoor unit securely to the base ground with anchor bolts. t The manufacturer is not responsible for the damage occurred by not adhering to the standard of the installation. t To protect the outdoor unit from external condition such as rain, install it on the base ground and connect the drain pipe to the drainage. 11 Refrigerant pipe installation Refrigerant pipe work fThe length of refrigerant pipe should be as short as possible and the height difference between an indoor unit and outdoor unit should be minimized. fThe piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length, height difference, and the allowable length after branching is done. fThe pressure of the R-410A is high. Use only certified refrigerant pipe and follow the installation method. fAfter pipe installation, charge the refrigerant according to the length of the pipe and R-410A refrigerant should be used. fUse clean refrigerant pipe and there shouldn’t be any harmful ion, oxide, dust, iron content or moisture inside pipe. fUse tools and accessories that fit on R-410A only. WARNING t When installing, make sure there is no leakage. When collecting the refrigerant, stop the compressor first before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high. It may cause explosion and injury. Tool Work Pipe cutter Pipe cutting Flaring tool Pipe flaring Refrigerant oil Refrigerant pipe work Apply refrigerant oil on flared part Pipe bender Pipe bending Nitrogen gas Inhibition of oxidization Brazing tool Manifold gauge Refrigerant charging hose Vacuum pump Air tightening test Exclusive ether oil, ester oil, alkali benzene oil or synthetic oil Compatible Pipe brazing Need exclusive one to prevent mixture of R-22 refrigerant oil use and also the measurement is not available due to the high pressure. Air tightening test ~ additional refrigerant charging Vacuuming, charging and checking operation Vacuum drying Compatible (Use products which contain the check valve to prevent the oil from flowing backward into the outdoor unit.) Use the one that can be vacuumed up to 100.7 kpa(5Torr.-755 mmHg). Scale for refrigerant charging Compatible Gas leak detector Gas leak test Flare nut Compatible Connect flare nut with pipe Torque wrench 12 If compatible with conventional tool Need exclusive one due to the refrigerant leakage or inflow of impurities. Need exclusive one ( The one for R-134a can be used) You must use the flare nut equipped with product. Refrigerant leakage may occur when the conventional flare nut for R-22 is used. Selecting refrigerant pipe Temper grade and minimum thickness of the refrigerant pipe Minimum thickness [mm] ø6.35 0.7 ø9.52 0.7 ø12.70 0.8 ø15.88 1.0 ø19.05 0.9 ø22.23 0.9 Temper grade ENGLISH Outer diameter [mm] Annealed Drawn CAUTION t For pipes larger than Ø 19.05, drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be used. If a annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and cause personal injury. Pipe installation between an outdoor unit and the first Y-joint Outdoor unit capacity [HP] Liquid pipe [mm] Gas pipe [mm] One step upgraded pipe [mm] 4 ø9.52 ø15.88 ø19.05 5 ø9.52 ø15.88 ø19.05 6 ø9.52 ø19.05 ø22.23 fInstall the refrigerant pipe according to main pipe size of each outdoor unit capacity. fWhen the pipe length between an outdoor unit and the farthest indoor unit including elbow exceeds 90 m, the gas pipe size should be upgraded one step among the main pipes from the outdoor unit to the first Y-joint. (The liquid pipe size will be maintained.) fIf the capacity of the outdoor unit can decline due to the pipe length, upgrade the pipe size one step (gas pipe). First Y-joint Main pipe size up Pipe installation between Y-joints Indoor unit total capacity(kW) 1JQFEJBNFUFS0t%tNN Liquid pipe (mm) X ≤ 15.0 Gas pipe (mm) ø15.88 ø9.52 15.0 < X ≤ 23.2 ø19.05 13 Refrigerant pipe installation Selecting Y-joint fSelect the first Y-joint according to main pipe size of each outdoor unit capacity. fSelect the other Y-joints according to the total indoor unit capacity under the selected Y-joint. Selecting the first Y-joint Other Y-joints Total indoor unit capacity under the selected Y-joint (kW) Y-joint model Outdoor unit capacity (HP) Y-joint model 4 MXJ-YA1509✴ X ≤ 15.0 MXJ-YA1509✴ 5 MXJ-YA1509✴ 15.0 < X ≤ 40.6 MXJ-YA2512✴ 6 MXJ-YA2512✴ Keeping refrigerant pipe To prevent foreign materials or water from entering the pipe, it is important to keep the refrigerant pipe clean and dry and to seal it during installation. Apply correct sealing method depending on the environment. Exposure place Outside exposure Exposure time Sealing type Longer than one month Pipe pinch Shorter than one month Taping - Taping Inside exposure Refrigerant pipe brazing and safety information Important information for refrigerant pipe work fMake sure that there is no moisture inside the pipe. fMake sure that there are no foreign materials and impurities in the pipe. fMake sure that there is no leak. fMake sure to follow the instruction when brazing and keeping the pipe. Nitrogen flushing brazing fUse Nitrogen gas when brazing the pipes as shown in the picture. fIf you do not perform nitrogen flushing when brazing the pipes, oxide may form inside the pipe. It can cause the damage of the important parts such as compressor, valves. fAdjust the flow rate of the Nitrogen flushing with a pressure regulator to maintain 0.05 m3/h or less. ø6.35(1/4") copper pipe Brazing part Shut-off valve Nitrogen gas Pressure regulator Taping Flow meter High pressure hose 14 Direction of the pipe when brazing fBrazing the pipe should be done with the pipe headed downward or horizontally. fAvoid brazing with the pipe headed upward. CAUTION t The test liquid used to detect leakage after pipe brazing should be the designated one. The use of the test liquid containing sulfur element may cause pipe corrosion. ENGLISH Cutting or Flaring the pipes fMake sure that you prepared the required tools. - Pipe cutter, reamer, flaring tool and pipe holder, etc. fIf you want to shorten the pipe, cut it using a pipe cutter ensuring that the cut edge remains at 90° with the side of the pipe. - There are some examples of correctly and incorrectly cut edges below. Pipe cutter 90° Oblique Rough Burr Pipe fTo prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer. fCarry out flaring work using flaring tool as shown below. [Flaring tool] A Yoke Flaring bar Flaring bar Clutch type Wing nut type Pipe Pipe Flare nut A(mm) Pipe diameter (mm) Conventional flare tool Flare tool for R-410A clutch type Clutch type Wing nut type ø6.35 0~0.5 1.0~1.5 1.5~2.0 ø9.52 0~0.5 1.0~1.5 1.5~2.0 ø12.70 0~0.5 1.0~1.5 1.5~2.0 ø15.88 0~0.5 1.0~1.5 1.5~2.0 fCheck that you flared the pipe correctly. - There are some examples of incorrectly flared pipes below. Correct CAUTION Inclined Damaged Surface Cracked Uneven Thickness t If foreign matters or BURRs are not removed after cutting pipe, refrigerant gas may leak. t If foreign matters enter inside the pipe, the important interior parts of the unit may get damaged or product efficiency will be reduced. So, the direction of pipe should be downward during pipe cutting or flaring. 15 Refrigerant pipe installation Tightening flare connection area fCheck that the flaring is properly made. fAlign the center of the piping and sufficiently tighten the flare nut with fingers. Finally, tighten the flare nut with torque wrench until the wrench clicks. When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. fMake sure to use ester oil to coat the flare connection section. Pipe CAUTION 16 $POOFDUJPOUPSRVFLHGtDN Flare dimension (A, mm) ø6.35 145~175 8.70~9.10 ø9.52 333~407 12.80~13.20 ø12.70 505~615 16.20~16.60 ø15.88 630~769 19.30~19.70 Flare shape (mm) 45° ±2° Outer diameter (D, mm) Flare nut 90° ±2° Flare connection section A R 0.4~0.8 D t Blowing Nitrogen gas should be done when brazing the pipe. t Make sure to use the provided flare nut. t Make sure that there are no cracks on the bent pipe. t Do not fasten the flare nut with excessive strength. t Use ester oil to coat the flare connection area to prevent refrigerant leak. R-410A is a high pressure refrigerant. Therefore, there is a risk of refrigerant leakage if the flare connection is not coated with ester oil. Pipe installation for an outdoor unit Pipe direction The refrigerant pipe can be pulled out from front, flank, rear, and bottom side, so install it depending on the installation site condition. CAUTION ENGLISH CAUTION Caution for using knock-out hole t Make sure not to damage the exterior of the outdoor unit. t Remove all burrs at the edge of the knock-out hole and apply the paints it to prevent rust. t Use a cable tube and bushing to prevent a cable from being damaged when passing through a knock-out hole. t After installing pipes, block the unused knock hole to prevent small animal from entering. However, the radiant heat hole (A) should be able to intake air. Caution for connecting the pipe t When brazing the pipe, the unit may get damaged by a brazing fire and a flame. Use a flame proofing cloth to protect the unit from a brazing fire or flame. t The O-ring and Teflon packing inside service valve may get damaged by a brazing fire. Wrap the bottom side of the service valve with a wet cloth and braze it as shown above. Make sure not to interrupt the brazing with the drips from the wet cloth. High pressure (Liquid side) t The connecting pipes of liquid side and gas side should not contact each other nor should they contact to the product. Vibration may cause damage Low pressure (Gas side) to the pipes. Outdoor unit refrigerant pipe connection Classification Working process Front, flank, rear side of pipe connection t First, remove the pipe cover from unit. t Separate the knock-out hole to use. If the hole is open, small animals such as squirrels and rats may get into the unit through the hole and the unit may be damaged. Bottom side of pipe connection t Separate the knock-out hole at the bottom side of the unit and install the pipe. t After installing and insulating the pipe, close up the remaining gap. If the gap remains open, small animals such as rats and squirrels may get inside the unit and cause damage to the unit. 17 Refrigerant pipe installation Refrigerant pipe installation examples Using a Y-joint Using a Y-joint/EEV kit Using a header joint Using a header joint/ Y-joint Allowable length of the refrigerant pipe and the installation examples Connection by Y-joint Outdoor unit Connection by Y-joint/EEV kit Outdoor unit 18 Classification Y-joint connection Y-joint / EEV kit connection The distance between the outdoor unit and the farthest indoor unit ≤ 150 m Actual Length Outdoor unit ~ Indoor units The distance between an outdoor unit and the farthest indoor unit ≤ 175 m Main pipe length The main pipe(a) from the outdoor unit to the first Y-joint should be less than 110 m. Outdoor unit ~ Indoor units Maximum allowable length after Y-joint Ex) 6 indoor units a+b+c+d+j ≤ 150 m Equivalent length Total length Maximum allowable height Ex) 8 indoor units a+b+c+d+e+f+g+p≤ 150 m The sum of the total length of pipes should be less then 300 m. Height H1: The difference of height between an outdoor unit and indoor unit < 50 m Height H2: The difference of height between indoor units ≤ 15 m Actual Length The distance between the first Y-joint and the farthest indoor unit ≤ 40 m Ex) 8 indoor units b+c+d+e+f+g+p≤ 40 m EEV Kit Allowable length between EEV kit and an indoor unit ≤ 20 m Ex) h, l, j ≤ 20 m Model name Remarks MEV-E24SA 2 m or less 1 indoor MEV-E32SA MXD-E24K132A MXD-E24K200A EEV Kit ~ Indoor units Actual pipe lengh 2 indoor MXD-E32K200A 20 m or less MXD-E24K232A Apply to products without EEV (Wall mounted & ceiling) MXD-E24K300A 3 indoor MXD-E32K224A MXD-E32K300A ❋ When the equivalent length between an outdoor unit and the farthest indoor unit exceeds 90 m, upgrade the low pressure pipe of the main pipe one step. 19 ENGLISH Maximum allowable length of pipe Refrigerant pipe installation Connection by header joint Outdoor unit Header joint g Indoor unit Connection by Y-joint/header joint Outdoor unit Header joint f Y-joint g H1 c H2 Indoor unit Classification Header joint connection Y-joint / header joint connection The distance between an outdoor unit and the farthest indoor unit ≤ 150 m Actual Length Maximum allowable length of pipe Outdoor unit ~ Indoor units Maximum allowable height Outdoor unit ~ Indoor units Ex) 8 indoor units a+b+c ≤ 150 m Equivalent length The distance between an outdoor unit and the farthest indoor unit ≤ 175 m Main pipe length Total length Maximum allowable length after Y-joint Ex) 8 indoor units a+g≤ 150 m The main pipe(a) from the outdoor unit to the first Y-joint should be less than 110 m. The sum of total length of pipes should be less then 300 m. Height H1: The difference in height between an outdoor unit and indoor unit < 50 m Height H2: The difference in height between indoor units ≤ 15 m Actual Length The distance between the header joint and the indoor unit ≤ 40 m Ex) b, c ~ f, g ≤ 40 m The distance between the first Y-joint and the farthest indoor unit ≤ 40 m Ex) 8 indoor units b+c, d+g ≤ 40 m ❋ When the equivalent length between an outdoor unit and the farthest indoor unit exceeds 90 m, upgrade the low pressure pipe of the main pipe one step. 20 Refrigerant pipe work Refrigerant Y-joint installation Install the Y-joint ‘horizontally’ or ‘vertically’. fInstall horizontally ENGLISH fInstall vertically NOTE t When using A~J type of Y-joint, connect the Y-joint to the pipe with the provided reducer. t When using K~Z type of Y-joint, connect the Y-joint to the pipe by cutting the inlet of the Y-joint or provided reducer properly. 10~15 mm or more Connect to other branch joint or indoor unit Rear Pipe connection Reducer Reducer Pipe Rear Gas/liquid side Y-joint Connect to outdoor unit Front ±15° CAUTION t Install the Y-joint within ±15° on the horizontal or on the vertical. t Make sure that the pipe does not break at Y-joint and pipe connection. t Keep a minimum straight line distance of 500 mm or more before connecting Y- joint. Main pipe Minimum straight line distance (500 mm or more) ❋ Install the Y-joint within ±15° on the horizontal or on the vertical. 21 Refrigerant pipe installation Correct use (The insertion depth of connecting pipe) Incorrect use (The insertion depth of connecting pipe) Basic specification Connecting pipe Connecting pipe Connecting pipe Connecting pipe When cutting connection part CAUTION t When inserting connecting pipe into the Y-joint, please comply with the installation regulation. Refrigerant header joint installation fSelect the reducer fitted on the diameter of the pipe. Liquid side Gas side Supplied Reducer Pipe (Purchased privately) Pipe (Purchased privately) Reducer Pipe (Purchased privately) Pipe (Purchased privately) To indoor unit To outdoor unit To indoor unit To outdoor unit Reducer Reducer fBlock the unused pipes end with caps if the number of connected indoor unit is fewer than header joint ports. Liquid side Gas side Brazing part Connection in order Supplied Connection in order Block the port of header joint Block the port of header joint 22 Reducer CAUTION t When using A~J type of header joint, connect the header joint to the pipe with provided reducer. t When using K~Z type of header joint, connect the header joint to the pipe by cutting the provided reducer properly. t Connect the header joint in order respecting the number of the indoor unit. t Connect the indoor unit as the highest capacity comes first. ENGLISH 10~15 mm or more fInstall the header joint horizontally. - Install the header joint horizontally so that it is not facing down. Reducer Header joint ±10° or less Should be horizontal Pipe Liquid side Should be horizontal ±15° or less Should be horizontal Should be horizontal ±15° or less Should be horizontal Gas side ±10° or less 23 Refrigerant pipe installation Performing air tightening test fUse tools for R-410A only to prevent the inflow of foreign substances and to resist the internal pressure. fUse dry Nitrogen gas to do an airtight test as below. Apply pressure to the liquid side pipe, gas side pipe with Nitrogen gas of 4.1 MPa (gauge pressure). If you apply pressure more than 4.1 MPa (gauge pressure), the pipes may be damaged. Apply pressure using pressure regulator. Continue to apply pressure for minimum 24 hours to check if the pressure drops. After applying Nitrogen gas, check the change of pressure using pressure regulator. If the pressure drops, check if there is a gas leak. If the pressure is changed, apply soapy water to check the leak. Check the pressure of the gas again. Maintain 1.0 MPa (gauge pressure) of the pressure before performing vacuum drying and check for further gas leak. After checking first gas leak, maintain 1.0 MPa (gauge pressure) to check for further gas leaks. Nitrogen gas CAUTION 24 t If the joint of high pressure side is disconnected and the nitrogen gas come into contact with human body, injury may occur. Tighten the joint connection firmly to prevent dangerous situation. Vacuuming a pipe and an indoor unit ENGLISH fUse the tools for R-410A only to prevent the inflow of foreign substances and resist against the internal pressure. fUse the vacuum pump with the check valve to prevent pump oil from flowing backward while the vacuum pump is stopped suddenly. fUse the vacuum pump that can be vacuumed up to 666.6 Pa(5 mmHg). fClose the service valve of the liquid side pipe, gas side pipe completely when performing air tightening test or vacuum drying. Connect the manifold gauge to the liquid pipe and gas pipe. Vacuum the liquid pipe and gas pipe using the vacuum pump. Make sure to install check valve to prevent pump oil from flowing into the pipe. Vacuum those pipes for more than 2 hours and 30 minutes. The time of vacuum drying may differ depending on the length of the pipe or outdoor temperature. Perform vacuum drying for at least 2 hours and 30 minutes. Close the valve after checking the vacuum gauge pressure has reached at -100.7 kPa (gauge pressure). Check the vacuum pressure using the vacuum gauge. Vacuum pump Check whether the pressure is maintained as -100.7 kPa (gauge pressure), 5 torr. for an hour. Check the gas leak. Pressure Increase Yes Vacuum destruction due to the moisture inside the pipe t Apply pressure with Nitrogen gas of 0.05 MPa (gauge pressure). No Charging additional refrigerant according to piping length Perform vacuum drying again up to -100.7 kPa (gauge pressure), 5 torr (for 2 hours or longer) and evaluate the vacuum No Pressure Increase CAUTION Yes t If the pressure rises in an hour, either water remains inside the pipe, or there will be a leak. 25 Refrigerant pipe installation Selecting additional refrigerant charging fBasic refrigerant The basic amount of additional refrigerant charged at a factory Model Refrigerant Factory charge(kg) RD040MHXE✴ AM040✴XMDEH 3.2 RD050MHXE✴ AM050✴XMDEH 3.2 RD060MHXE✴ AM060✴XMDEH 3.3 R-410A RD040MHXG✴ AM040✴XMDGH 3.2 RD050MHXG✴ AM050✴XMDGH 3.2 RD060MHXG✴ AM060✴XMDGH 3.3 fCharging additional refrigerant The amount of additional refrigerant charging = The amount of refrigerant charging for pipe + the amount of refrigerant correction charging for an indoor unit. 1. The amount of additional refrigerant depending on the pipe size. - Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length. Size of liquid pipe (mm) 6,35 9,52 12,7 15,88 Additional amount (kg/m) 0,02 0,06 0,125 0,18 Additional refrigerant charging calculation = The sum of total length of Ø 9.52 liquid pipe(m) x 60 g + the sum of total length of Ø 6.35 liquid pipe(m) x 20 g Ex) a(Ø 9.52)=40 m, b+c+d(Ø 9.52)=15 m, e+f+g(Ø 6.35)=15 m The amount of additional refrigerant = 55 m x 60g + 15 m x 20 g = 3600 g 26 2. The amount of additional refrigerant for each indoor unit (Unit : kg) Capacity (kW) Model 1.7 0.15 2.2 2.8 3.6 0.25 0.25 0.25 4.5 0.17 0.24 0.34 0.16 0.22 6 7.1 8.2 9 11.2 12.8 14 16 0.32 0.32 0.45 0.45 0.31 0.45 0.45 0.32 0.47 0.45 0.45 0.32 0.45 0.45 0.57 0.69 0.69 0.69 0.69 0.69 0.42 0.32 0.31 0.42 0.54 0.38 0.38 0.62 0.68 0.38 0.38 0.62 0.68 0.91 0.38 0.38 0.15 0.22 0.29 5.6 0.29 0.29 0.29 0.37 0.37 0.17 0.24 0.17 0.24 0.26 0.24 0.22 0.35 0.28 0.22 0.35 0.28 0.22 0.45 0.28 0.22 0.39 0.39 0.36 0.51 0.52 0.71 0.49 0.49 0.16 0.24 0.34 0.16 0.22 0.27 0.24 0.34 0.19 0.25 0.27 0.24 0.34 0.25 0.34 0.27 0.51 0.25 0.34 0.27 0.36 0.51 0.52 0.71 0.24 0.24 0.32 0.32 0.32 0.32 0.49 0.49 0.49 0.49 ENGLISH Slim 1way cassette (JSF) (AM✴✴✴FN1DEH✴ / AM✴✴✴JN1DEH✴) Interior 1way cassette (AM✴✴✴HN1DEH✴) 2way cassette (AM✴✴✴FN2DEH✴) 4Way Casette S (AM✴✴✴FN4DEH✴) 360 cassette (AM✴✴✴KN4DEH✴) Floor Standing Unit (AM✴✴✴FNFDEH✴) 4way cassette S (600×600) (AM✴✴✴FNNDEH✴) Slim duct (AM✴✴✴FNLDEH✴) MSP duct (AM✴✴✴FNMDEH✴) Global duct (AM✴✴✴HNMPKH✴) Global duct(HSP) (AM✴✴✴HNHPKH✴) Ceiling (AM✴✴✴FNCDEH✴ / AM✴✴✴JNCDKH✴) Console (AM✴✴✴FNJDEH✴) Neo forte (AM✴✴✴FNTDEH✴) Neo forte (with EEV) (AM✴✴✴FNQDEH✴) AR5000 (AM✴✴✴JNADKH✴) AR5000 (with EEV) (AM✴✴✴JNVDKH✴) HSP duct (AM✴✴✴FNHDEH✴) Boracay (AM✴✴✴KNTDEH) Boracay (with EEV) (AM✴✴✴KNQDEH) 1.5 0.37 0.56 0.95 0.52 0.71 0.68 0.68 0.68 Ex) When the indoor unit AM022FN1DEH✴ and AM056FN4DEH✴ are combinated Additional refrigerant charging = 250 g + 450 g = 700 g 3. The total amount of additional refrigerant charging = the amount of refrigerant charging for pipe + the amount of refrigerant for each indoor unit. Ex) The amount of additional refrigerant charging = 3600 g + 700 g = 4300 g Connecting the drain hose to the outdoor unit When using the air conditioner in the heating mode, ice may accumulate . During de-icing (defrost operation), the condensed water must be drained off safely. Consequently, you must install a drain hose on the outdoor unit, following the instructions below. fLeave space of more than 50 mm between the bottom of the outdoor unit and the ground for installation of the drain hose, as shown in figure. fInsert the drain plug into the hole on the underside of the outdoor unit. fConnect the drain hose to the drain plug. fEnsure that the drained water runs off correctly and safely. 13 mm 50 mm 27 Refrigerant pipe installation fBe sure to plug the rest of drain holes not connected with drain plugs using drain caps. Drain cap Drain plug Insulating refrigerant pipe or Y-joint fYou must check if there is a gas leak before completing all the installation process. After you check that the gas does not leak, you must insulate the pipe and hose. fUse EPDM insulation which meets the following condition. Item Unit Standard Density g/cm3 0.048~0.096 Dimension change route by heat % -5 or less Water absorption rate g/cm3 0.005 or less Thermal conductivity kcal/m·h·˚C 0.032 or less Moisture transpiration factor ng/(m2·s·Pa) 15 or less Moisture transpiration grade 2 g/(m ·24h) 15 or less Formaldehyde dispersion mg/L - Oxygen rate % 25 or more Selecting the insulation of refrigerant pipe fInsulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size. fThe standard condition is 30 °C, with humidity less than 85 %. In the conditions of high humidity, use one grade thicker. Insulation(Cooling, Heating) Pipe Pipe size (mm) Standard [30 °C, 85 %] High humidity [30 °C, 85 % or more] Remarks EPDM, NBR Liquid pipe Ø6.35~Ø9.52 9t I Ø12.70~Ø50.80 13t I Ø6.35 13t 19t Ø9.52 Gas pipe Ø15.88 Ø19.05 Ø22.23 28 Heat resisting temperature is more than 120 °C Ø12.70 19t 25t Insulating refrigerant pipe fYou must insulate refrigerant pipe, Y-joint, header joint, and pipe connection area. fIf you insulate the pipes, the condensed water does not fall from the pipes. fCheck if there are any insulation cracks on the bent pipe. Clamp Insulation ENGLISH Insulation Indoor unit Gas side pipe Indoor unit Liquid side pipe Install the insulation to be overlapped Fix securely without any gap. Pipe insulation Pipe insulation after insulating EEV kit t The insulation of the gas and liquid pipes can be in contact t When installing the gas side and liquid side pipes, leave with each other but they should not press excessively 10 mm of space. against each other. t When contacting the gas side and liquid side pipe, use t When contacting the gas side and liquid side pipe, use thicker insulation. thicker insulation. 10 mm Insulation 10 mm 10 mm Insulation Liquid pipe Gas pipe Gas pipe CAUTION Liquid pipe t Install the insulation not to be get wider and use adhesive on the connection part of it to prevent moisture entering. t Bind the refrigerant pipe with insulation tape if it is exposed to outside sunlight. (When binding the pipe with finishing tape, be careful not to reduce the thickness of the insulation.) t Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe. t When the thickness of insulation is reduced, supplement the reduced thickness with additional insulation. Hanger Additional insulation a ax3 Insulation for refrigerant pipe 29 Refrigerant pipe installation Insulating the header joint fFasten the header joint using a cable tie and cover the connected part. fInsulate the header joint and the brazing part and wrap the connected part with an adhesive insulation tape to prevent dew formation. Adhesive insulation tape Insulation for the header joint Insulation Insulation after brazing a stopper Insulation for the refrigerant pipe Adhesive insulation tape fFix the header joint with a hanger after insulating it. Insulating the Y-joint, liquid & gas side connecting pipe fAttach the insulation provided with the Y-joint to the insulation purchased privately without a gap. Wrap the connected part with insulation (Purchased privately) of a thickness of at least 10 mm. fUse insulation that should be able to handle an interior temperature of over 120 °C. Wrap the Y- joint with insulation of a thickness of at least 10 mm. Pipe insulation Provided insulation (Purchased privately) Fix securely without any gap. Fix securely without any gap. 150 mm Y-joint Thickness of the insulation (Purchased privately) should be at least thicker than 10 mm. 30 Insulation tape (Purchased privately) Pipe insulation (Purchased privately) Pipe Pipe insulation (Purchased privately) ❋ Attach the adhesive insulation tape to the pipe as shown in the picture after insulating the pipe. Wiring work Conduit leading into an outdoor unit Silicone 31 ENGLISH fWiring work should be performed in accordance with related laws such as ‘Technical specification on electric installation’, ‘Wiring regulations’ or ‘Installation manual’. fCopper cable should be used for wiring work and all the wires or parts should be rated products. fWiring work should be performed by a company certified by an electric power company. fRefer to the circuit diagram attached to the outdoor unit for detailed wiring work. fWiring work should be performed after disconnecting main circuit breaker and Y-joint switch. fYou must perform grounding work . (Grounding resistance value should be less than 100 Ω.) When ELCB is installed, protective grounding resistance value can be applied. (When the ELCB is 100 mA, 0.1sec, protective grounding resistance value should be less than 250 Ω at a place where electric danger is high and should be less than 500 Ω at other places. ) fElectric wiring circuit diagram displays outline only. fDo not connect a heater to an outdoor unit and do not install a duct which you arbitrarily remodeled. - Failure to do so may result in reduced capacity of an air conditioner, electric shock, and fire. fDo not connect the grounding wire to that of gas pipe, water pipe, lightning rod, or telephone. - Gas pipe: If the gas leaks, explosion or ignition may occur. - Water pipe: If rigid vinyl pipe is used, grounding effect will not work. - Grounding wire and lightning rod of telephone: The electric potential of grounding wire may rise abnormally in the falling of a thunderbolt. fThe ELB for ground-fault protection only should be combined with MCCB or fuse equipped load breaker switch. In this case, you should use the one that has at least the same or more capcity as fuse capacity or the rated current of MCCB. fUse the wires that comply with regulated specification and firmly connect to the terminal board. Then tighten it with the screws provided so that the terminal board cannot be moved by external force. (The connecting cable and the grounding terminal should be locally procured). When wiring, the connection cable shouldn’t be too tight. fApply silicon at the end of CD pipe so that rainwater does not enter. Wiring work Overall System Configuration Connection of the power cable (1 phase 2 wires) Distribution board 1 phase 2 wires 220-240V~ ELCB Or MCCB + ELB Outdoor unit Indoor unit 1 phase 2 wires 220-240V~ Or MCCB + ELCB ELB 220V Earth Communication cable Earth Wired remote controller Connection of the power cable (1 phase 2 wires using EEV kit) Distribution board 1 phase 2 wires 220-240V~ Or ELCB MCCB + ELB Outdoor unit 1 phase 2 wires 220-240V~ Or MCCB + ELCB ELB Wired remote controller Earth Communication cable 32 Indoor unit EEV kit Connection of the power cable (3 phase 4 wires) Distribution board 3 phase 4 wires 380V~ Indoor unit 1 phase 2 wires 220-240V~ Or MCCB + ELCB ELB ENGLISH Or MCCB + ELB ELCB Outdoor unit 220V Earth Communication cable Earth Wired remote controller Connection of the power cable (3 phase 4 wires using EEV kit) Distribution board 3 phase 4 wires 380V~ Or ELCB MCCB + ELB Outdoor unit 1 phase 2 wires 220-240V~ Or MCCB + ELCB ELB Wired remote controller Earth Communication cable CAUTION Indoor unit EEV kit t You must install an earth leakage breaker. - ELCB(Earth Leakage Circuit Breaker) - MCCB(Molded Case Circuit Breaker) - ELB(Earth Leakage fuse breaker) t Manufacturers are not responsible for fire caused by not installing ELCB or MCCB. t Install the cabinet panel near the outdoor unit for service convenience and emergency operation switch off. t You must install a circuit breaker that can prevent excess current and shut off the electric leakage on the outdoor unit. 33 Wiring work Specification for circuit breaker and power supply cord fPower supply cord is not supplied with air conditioner. fSelect the power supply cord in accordance with relevant local and national regulations. fWire size must comply with the applicable local and national code. fThe appliance shall be provided with a certified power supply cord and interconnection cord complying with the national regulations of the countries in which the appliance is to be sold. fPower supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC : 60245 IEC 57 / CENELEC : H05RN-F) Model Voltage AM040✴XMDEH AM050✴XMDEH 1phase, 220~240V/50 Hz AM060✴XMDEH MCA MFA Ssc value (MVA) 22 32 (Note1) 24 32 (Note1) 32 40 (Note1) MCA MFA Ssc value (MVA)(Note2) 10 20 3.3 12 20 3.3 12 20 3.3 (Note1) Equipment complying with IEC 61000-3-12. Model Voltage AM040✴XMDGH 3phase, 380~415V/50 Hz AM050✴XMDGH AM060✴XMDGH (Note2) This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc value at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc value. Tightening power terminal fConnect the cables to the terminal board using the compressed ring terminal. fUse rated cables only. fConnect the cables with driver and wrench that can apply the rated torque to the screws. fMake sure that appropriate tightening torque is applied for cable connection. If the terminal is loose, arc heat may occur and cause fire and if the terminal is connected too firmly, terminal may get damaged. 5JHIUFOJOHUPSRVFLHGtDN 34 M4 12.0~18.0 Communication : F1, F2 3 phase AC power: 1(L), 2(N), L, N, L1(R), L2(S), L3(T), N M5 20.0~30.0 1 phase AC power : 1(L), 2(N), L, N Selecting compressed ring terminal fSelect a compressed ring terminal of a connecting power cable based on a nominal dimensions for cable. fCover a compressed ring terminal and a connector part of the power cable and then connect it. Silver solder ENGLISH Nominal dimensions for cable (mm2) Nominal dimensions for screw (mm) Standard dimension (mm) 10 16 50 70 4 4/6 8 8 8 8 25 8 8 35 8 8 8 9.5 15 15 16 12 16.5 16 22 22 24 ±0.4 B Allowance (mm) ±0.2 ±0.2 ±0.2 ±0.3 ±0.3 ±0.3 Standard dimension (mm) 5.6 7.1 9 11.5 13.3 13.5 17.5 Allowance (mm) +0.3 -0.2 +0.3 -0.2 +0.3 -0.2 +0.5 -0.2 +0.5 -0.2 +0.5 -0.2 +0.5 -0.4 Standard dimension (mm) 3.4 4.5 5.8 7.7 9.4 11.4 13.3 Allowance (mm) ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.3 ±0.4 Min. 6 7.9 9.5 11 12.5 17.5 18.5 14 20 50 51 D d1 E F Min. 5 9 9 13 15 L Max. 20 28.5 30 33 34 13 38 43 Standard dimension (mm) 4.3 8.4 8.4 8.4 8.4 8.4 8.4 8.4 Allowance (mm) + 0.2 0 +0.4 0 +0.4 0 +0.4 0 +0.4 0 +0.4 0 +0.4 0 +0.4 0 1.15 1.45 1.7 1.8 1.8 2.0 d2 t 13 Min. 0.9 35 Wiring work Installing grounding wire fGrounding must be done by a qualified installer for your safety. fUse the grounding wire by referring to the specification of the electric cable of the outdoor unit. Grounding the power cable fThe standard of grounding may vary according to the rated voltage and installation place of the air conditioner. fGround the power cable according to the following. Installation place Power condition High humidity Voltage of lower than 150V Low humidity Perform the grounding work 3. Note 1) Perform the grounding work 3 if possible for your safety. Note 2) Must perform the grounding work 3. Note 1) (In case of installing circuit breaker as well) Voltage of higher than 150V NOTE Average humidity 1. Grounding work 3 t Grounding must be done by your installation specialist. t Check if the grounding resistance is lower than 100 Ω. When installing a circuit breaker that can cut the electric circuit within 0.5 second in case of a short circuit, the allowable grounding resistance should be 30~500 Ω. 2. Grounding at dry place t The grounding resistance is should be lower than 100 Ω. (It should not be higher than 250 Ω) - Use the rated grounding wire by referring to the specification of the electric cable of the outdoor unit. Performing the grounding work fUse the grounding wire by referring to the specification of the electric cable for the outdoor unit. When using the terminal for grounding only Earth terminal 36 When using grounding of the switch board Switch Board Grounding work If the power distribution circuit does not have a grounding or the grounding does not comply with specifications, a ground rod must be installed. The corresponding accessories are not supplied with the air conditioner. 1. Select a grounding rod that complies with the specifications given in the illustration. ENGLISH Copper wire Carbon rod Compressed ring terminal (Terminal M4) PVC-insulated green/yellow wire 2. Select a proper place for the grounding rod installation. - In damp hard soil rather than loose sandy or gravel soil that has a higher grounding resistance. - Away from underground structures or facilities, such as gas pipes, water pipes, telephone lines and underground cables. - At least two meters away from lightening(as in a storm) conductor. 50 cm 30 cm CAUTION t The grounding wire for the telephone line cannot be used to ground the air conditioner. 3. Install a green/yellow coloured grounding wire : - Refer to the ‘Wiring work’ for the specification of grounding wire. - When the grounding wire is too short, extend the grounding wire but bind the connection part with insulation tape. (Do not bury the connection). - Secure the grounding wire in position with staples. CAUTION t When the grounding rod is installed in a place where many people pass by, you must fix it firmly. 4. Carefully check the installation, by measuring the grounding resistance with a ground resistance tester. - If the resistance is above required level, drive the grounding rod deeper into the ground or increase the number of grounding rods. 5. Connect the grounding wire to the electrical component box inside of the outdoor unit. 37 Setting indoor unit option switch and key function PBA shape AM✴✴✴✴XMD✴H Series FLOW SWITCH External Con S/W for setting number of connecting indoor units 7-SEGMENT (DISPLAY) DIP S/W (K5~K16) Terminal blocks (R1, R2) for connection with the Upper Controller(DMS, Touch, On/Off Controller, etc) Do not connect wires to these terminal blocks 38 Setting the number of connecting indoor units Ex : When you connect 3 indoor units, set SW02 to 3 AM✴✴✴✴XMD✴H Series SW02 Unit digit Unit digit ENGLISH SW01 S/W function AM✴✴✴✴XMD✴H Series Tact switch DIP switch Heating KEY operation Cooling KEY operation Reset View Mode K1 K2 K3 K4 Manual silent option Snow prevention Cooling target evaporating temperature Cooling target evaporating temperature K5 K6 K7 K8 Silent mode Silent mode Heating capacity correction Heating capacity correction K9 K10 K11 K12 Total electric current option Total electric current option Defrost correction Defrost correction K13 K14 K15 K16 39 Setting indoor unit option switch and key function DIP S/W specification setting AM✴✴✴✴XMD✴H Series TACT switch Number of presses Content Press and hold 1 time Check operation 1 Heating refrigerant charging 2 Heating trial operation 3 Heating pump out 4 Vacuum 5 Completion 1 Cooling refrigerant charging 2 Cooling trial operation 3 Cooling pump down 4 Checking the amount of refrigerant 5 Completion SEG1 SEG2 SEG3 SEG4 Remark K1 K2 K3 Reset ❋ If you perform Cooling refrigerant charging or Cooling pump down in high temperature environment, E407 (High pressure protection control) error or high pressure protection switch may operate. fK4 input display order (1) Current frequency l (2) Low pressure value l (3) Outdoor temperature l (4) Discharge temperature l (5) OLP temperature l (6) COND temperature l (7) Double pipe out tube temperature l (8) High pressure value l (9) FAN RPM l (10) ESC(EVI) EEV l (11) MAIN EEV l (12) Present running current l (13) Number of connected indoor units l (14) Number of operating indoor units l (15) Sum of indoor unit capacity l (16) Mode Master indoor address K4(Press and hold to enter the setting) -> K4 press(Number of press) Displayed content Display on segment 0 time Main Micom version Version (ex. 0912) 1 time Inverter Micom version Version (ex. 0912) 2 times EEPROM version 3 times Automatically assigned address of the units 4 times 40 Manually assigned address of the units Version (ex. 0912) SEG1 SEG2 SEG3, 4 Indoor unit: “A” Indoor unit: “0” Address (ex: 05) SEG1 SEG2 SEG3, 4 Indoor unit: “A” Indoor unit: “0” Address (ex: 01) fK5 : Automatic / Manual Silent mode operation setting Switch Function (Silent mode operation control) K5 Automatic Silent mode operation Manual Silent mode operation ENGLISH ON OFF ❋ You can use the Manual Silent mode operation, if you set the K5 DIP switch to ‘OFF’ and connect some external contact switch to the ‘External Con’ port of MAIN PBA (shown in p.38) fK6: Snow prevention control option Switch Function (Snow prevention control) K6 ON Disuse snow prevention control (Default) OFF Use snow prevention control ❋ When you set the snow prevention control as ‘Use’, outdoor fan will operate for one minute every 30minutes in the condition of Cooling/heating stop status at below 5 °C. fK7, K8: Changing cooling capacity correction table Switch Function (Target evaporating temperature) K7 K8 ON ON 7 ~ 9 °C (Factory default setting) ON OFF 5 ~ 7 °C OFF ON 9 ~ 11 °C OFF OFF 10 ~ 12 °C ❋ Upgrade the performance by referring to the cooling long pipe performance data of the technical data book. ❋ If you upgrade the performance at your discretion, low discharge air temperature of an indoor unit might cause discomfort. This is the option for performance correction during long pipe installation only. fK9, K10: Silent mode option. This reduces FAM RPM to operate the outdoor unit quietly during night operation. Switch Function (Silent mode) K9 K10 ON ON Disuse Silent mode ON OFF STEP - 1 OFF ON STEP - 2 OFF OFF STEP - 3 ❋ Enables the silent mode for night-time in cooling mode. (It operates automatically depending on the temperature.) ❋ However, if the external contact interface module (MIM-B14) is used, entering the silent mode is available with contact signal in cooling and heating mode. 41 Setting indoor unit option switch and key function fK11, K12: Changing heating capacity correction table Switch Function K11 K12 ON ON Default ON OFF Default -196 kPa OFF ON Default - 98 kPa OFF OFF Default + 98 kPa ❋ Heating operation increases frequency when current high pressure is higher than target high pressure; vice versa, decreases frequency. When target high pressure is high, the discharge air temperature of an indoor unit will increase but energy consumption will increase as well. ❋ Maintaining factory default status is recommended. However, if you want to reduce energy consumption or you are not satisfied with heating performance, control the operation according to the surrounding environment. As you decrease the target high pressure, energy consumption and noise may decrease but indoor air discharge temperature decreases as well. fK13, K14: Changing current limit option table Switch Function K13 K14 4 HP 5 HP 6 HP ON ON Default Default Default ON OFF Default - 4(A) Default - 2(A) Default - 2(A) OFF ON Default - 6(A) Default - 4(A) Default - 4(A) OFF OFF Default - 8(A) Default - 6(A) Default - 6(A) Classification ø1 ø3 42 Model Default 4HP RD040MHXE✴ / AM040✴XMDEH 22A 5HP RD050MHXE✴ / AM050✴XMDEH 24A 6HP RD060MHXE✴ / AM060✴XMDEH 32A 4HP RD040MHXG✴ / AM040✴XMDGH 10A 5HP RD050MHXG✴ / AM050✴XMDGH 12A 6HP RD060MHXG✴ / AM060✴XMDGH 12A fK15, K16: Defrost Option l This is to control entering condition of defrost mode Switch Function K16 ON ON MID ON ON LOW1 OFF OFF LOW2 ❋ Defrost mode will start when the temperature difference between outdoor and outdoor heat exchanger has become more than certain standard. ❋ Factory default status is MID. When the function changes to LOW with option control, defrost entering temperature decreases. When defrost entering temperature decreases, the operation hour will be long but this means that the operation hour with the reduced heating capacity increases. This option is used at places where humidity is high and the defrost mode enters too frequently. ❋ Maintaining factory default status is recommended. Setting the option 1. Press and hold K2 to enter the option setting. (Only available when the operation is stopped) - If you enter the option setting, display will show the following. (If you have set the ‘Emergency operation for compressor malfunction’, 1 or 2 will be displayed on Seg 4.) - Seg 1 and Seg 2 will display the number for selected option. - Seg 3 and Seg 4 will display the number for set value of the selected option. 2. If you have entered option setting, you can shortly press the K1 switch to adjust the value of the Seg 1, Seg 2 and select the desired option. (Refer to pages 45~47 for the Seg number of the function for each option) Example) Z 3. If you have selected desired option, you can shortly press the K2 switch to adjust the value of the Seg 3, Seg 4 and change the function for the selected option. (Refer to pages 45~47 for the Seg number of the function for each option) Example) Z 4. After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be saved when entire segments blinks and tracking mode begins. t Edited option will not be saved if you do not end the option setting as explained in above instruction. CAUTION 43 ENGLISH K15 Setting indoor unit option switch and key function ❋ While you are setting the option, you may press and hold the K1 button to reset the value to previous setting. ❋ If you want to restore the setting to factory default, press and hold the K4 button while you are in the option setting mode. - If you press and hold the K4 button, setting will be restored to factory default but it doesn’t mean that restored setting is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress, setting will be saved. Optional item Channel address Input unit SEG1 SEG2 SEG3 SEG4 Function of the option A Main 0 U 0 0 ~ 15 Automatic setting (Factory default) Manual setting for channel (0 ~ 15) Remarks Address for classifying the product from upper level 0 ~ 15 controller (DMS, S-NET 3, etc.) Inspection and check operation fThis function is only available for AM✴✴✴✴XMD✴H Series CAUTION 44 Precautions before check operation t When the outdoor temperature is low, turn on the main power 3 hours before beginning the operation. - If you start the operation immediately after turning on the main power, it may cause serious damage to the part within the product. t Do not touch the refrigerant pipe during or right after the operation. - Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the refrigerant which flows through the refrigerant pipe, compressor and other parts of the refrigerant cycle. If you touch the refrigerant during or right after the operation, you may get burns or frostbite. t Do not operate the product with its panel or protection nets off. - There is risk of personal injury from the parts that rotates, heated or with the high voltage. t Do not turn off the main power immediately after stopping the operation. - Wait for at least 5 minutes before turning off the main power. If not, water leakage or other problems may occur. t Connect all the indoor units and the power supply for the outdoor unit and run auto or manual address setting. Run auto or manual address setting after changing the indoor unit PCB. Inspection before check operation t Supply power to the outdoor unit 3 hours before check operation to pre-heat the crank case heater. CAUTION 6. Guaranteed range of check operation For correct judgment, you must perform check operation in below indoor/outdoor temperature condition. Outdoor temperature (°C) 50 40 30 20 Cooling Heating 10 0 -10 -20 5 10 15 20 25 30 35 40 45 Indoor temperature (°C) - Check operation selects and operates cooling/heating mode automatically. - In the temperature range marked with slashed pattern, system protection control may trigger during operation.(It may be hard to judge the check operation correctly due to protection control operation.) - When the temperature is outside of guaranteed range, accuracy of judgment on check operation may decrease near boarder line area. 45 ENGLISH 1. Check the power cable and communication cable of the indoor and outdoor unit. 2. Supply power to the outdoor unit 3 hours before check operation to pre-heat the crank case heater. 3. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase. - R,S,T terminal: check the 380 V ~ 415 V between wires (R-S, S-T, T-R) / 220V~240V between wires (L-N). 4. When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other options. 5. Write down the installation report on the service history report paper attached on the front part of the control box. Inspection and check operation Check operation 1. Use KEY MODE to run check operation. - When the check operation is not completed, UP (unprepared) will appear on the LED after the communication check and restrict compressor from operating. (UP Mode will be cleared automatically when check operation is completed.) - Check operation may proceed from 30 minutes maximum 50 minutes depending on the operation status. - During check operation, noise can be generated due to valve inspection. (Check the product if abnormal noise occurs continuously) 2. When error occurs during check operation, check the error code and take appropriate measures. - Refer to service manual if you need inspection or when other errors occur. 3. When check operation ends, use S-NET pro or S-CHECKER to issue a result report. - Refer to service manual for further actions if you have any items with “inspection required” sign on the result report. - After taking appropriate measure for the items with “inspection needed” sign, run the check operation again. 4. Check the following items by running (cooling/heating) trial operation. - Check if cooling/heating operation performs normally. - Individual indoor unit control: Check for air flow direction and fan speed. - Check for abnormal operation noise from the indoor and outdoor unit. - Check for proper draining from the indoor unit during cooling operation. - Use S-NET pro to check the detail operation status. 5. Explain to the user how to use the air conditioner according to the user’s manual. 6. Hand over the installation manual to the customer so they can keep it with them. Automatic refrigerant amount detection function (Checking th amount of refrigerant) Charging refrigerant fThe R-410A refrigerant is blended refrigerant. Add only liquid refrigerant. fMeasure the quantity of the refrigerant according to the length of the liquid side pipe. Add quantity of the refrigerant using a scale. Important information regulation regarding the refrigerant used This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. CAUTION t Inform user if system contains 5 tCO2e or more of fluorinated greenhouse gases. In this case, it has to be checked for leakage at least once every 12 months, according to regulation n°517/2014. This activity has to be covered by qualified personnel only. In case situation above (5 tCO2e or more of R-410A), installer (or recognized person which has responsibility for final check) has to provide a maintenance book, with all the information recorded according to REGULATION (EU) No 517/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 April 2014 on fluorinated greenhouse gases. Please fill in the following with indelible ink on the refrigerant charge label supplied with this product and on this manual. f① The factory refrigerant charge of the product. f② The additional refrigerant amount charged in the field. f①+② The total refrigerant charge. 46 Charging refrigerant Unit kg tCO2e ①, a Indoor unit ENGLISH ②, b ① + ②, c ② d ① Refrigerant type GWP value R-410A 2088 Outdoor unit t GWP=Global Warming Potential t Calculating tCO2e : kg x GWP / 1000 a Factory refrigerant charge of the product: see unit name plate. b Additional refrigerant amount charged in the field. (Refer to the above information for the quantity of refrigerant replenishment.) c Total refrigerant charge. d Refrigerant cylinder and manifold for charging. NOTE CAUTION t The filled-out label must be adhered in the proximity of the product charging port. (ex. onto the inside of the stop valve cover.) Charging refrigerant fOpen the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant. fIf you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB. Outdoor unit Gas side Liquid side R-410A (Inject liquid refrigerant) Manifold gage Scale Service valve Vacuum port CAUTION t Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air conditioner with the service valve closed, the important parts may be damaged.) t Put on safety equipment when charging refrigerant. t Do not charge the refrigerant when you adjust or control other product such as indoor units or EEV kits. t When the ambient temperature is low in winter time, do not heat the refrigerant container to speed up the charging process. There is risk of explosion. t Beware for possibility of refrigerant leakage when you connect the manifold gauge to the charging port for heating. t Close the valve of the refrigerant container immediately after charging the refrigerant. If not, there might be a change in entire amount of refrigerant. 47 Pump Down The object of pump down fYou can reduce as much refrigerant leakage as possible during product movement or repair by collecting the refrigerant to the outdoor unit. Caution for pump down procedure fThe amount of refrigerant that can be put into an outdoor unit is limited due to the slim shape of the outdoor unit. fBefore performing pump down, most of the refrigerant should be put into an empty container at first. The maximum amount of refrigerant that can be put into the outdoor unit is 5kg. fWhen the amount of system refrigerant exceeds the amount of maximum receptive capacity, compressor trip or damage by fire might be caused. Pump down procedure fBefore performing pump down, collect the refrigerant into the empty container. fTurn off the manifold gage. fTurn off the service valve of liquid pipe side. fPress K2 button on the outdoor unit PCB three times. (‘ ’ is displayed on outdoor PCB LED.) fWhen the compressor starts operating, observe low pressure using manifold gage. fWhen the low pressure goes below 0kg/cm²,g, turn off the service valve at gas side and finish the pump down operation. (To finish pump down operation, press K2 button one more time or press K3 button one time to be initiated.) CAUTION 48 t When putting refrigerant into the refrigerant container, you must use the exclusive container that can be recharged. When remodeling normal refrigerant container illegally, explosion might occur. How to put the refrigerant into the refrigerant container before pump down operation Outdoor unit Gas side R-410A Liquid side Refrigerant container valve Valve(1) Valve(2) Manifold gage Service valve Scale 49 ENGLISH ❋ When the amount of refrigerant charged in the system exceeds maximum receptive capacity, collect the refrigerant into the refrigerant container at first and then perform the pump down. fPrepare the exclusive refrigerant container that can be recharged, scale, and manifold gage that can be recharged. fCheck the current amount of refrigerant within the system. fAfter connecting the refrigerant container to an outdoor unit, operate 50 % of all indoor units as cooling mode. fCheck the pressure of high pressure side for manifold gage after 10 minutes from cooling operation. When the pressure of high pressure side is above 30 kg/cm²,g decrease the number of operating indoor unit and make the pressure below 30 kg/cm²,g. fAfter checking that the pressure of high pressure side went below 30 kg/cm²,g, open the manifold gage side valve(2) that is connected to the liquid pipe and refrigerant container valve. Then run the refrigerant from liquid pipe to refrigerant container. fCheck whether the proper amount of refrigerant are put into the container using a scale, turn off the valve and remove the manifold gage. fThe amount of refrigerant that can be put into the refrigerant container should be about 50 % of all refrigerant of the whole system. fDo not collect too much refrigerant in one refrigerant container. Checking lists after finishing installation fBefore supplying power, measure the power terminal (L, N) and outdoor unit grounding using insulation-resistance tester. - The measured value should be above 30 MΩ. CAUTION t You must not measure the communication terminal since the communication circuit may get damaged. t Check the short circuit using a circuit tester. Outdoor unit Installation Indoor unit Refrigerant pipe work t Have you checked the external surface and the inside of the indoor unit? t Is the place well-ventilated and has enough space been allowed for service? t Have you checked if the center of the indoor unit is ensured and it is installed horizontally? t Have you selected correct pipes? t Are the liquid and gas valve open? t Is the total number of connecting indoor units within the allowable range? t Are the length and the height difference between the refrigerant pipes within the allowable range? t Is the refrigerant Y-joint properly installed? t Has the connection of liquid and gas pipes been correctly performed? t Have you chosen correct insulation for pipes and have you insulated them correctly? t Is the pipe or connection part properly insulated? t Is the quantity of the additional refrigerant correctly weighed in? (You must record the amount of additional refrigerant charging on the service record paper placed outside the outdoor unit.) Installing the drain pipe t Have you checked whether the drain pipes of the indoor unit and outdoor unit are connected together? t Have you completed the drain test? t Is the drain pipe properly insulated? Wiring work t Are the power cable and communication cable tightened firmly on the terminal board within the range of rated tightening torque? t Have you performed the earthing work 3 to the outdoor unit? t Is 2-core cable used for the communication cable? t Is the length of the wire is in the limited range? t Is the wiring route correct? Setting ADDRESS Option 50 t Have you secured air discharge profile at the bottom of service cover? t Have you checked the external surface and the inside of the outdoor unit? t Is there any possibility of short circuit due to the heat of an outdoor unit? t Is the place well-ventilated and ensures space for service? t Is the outdoor unit fixed securely? t Are the ADDRESSES of the indoor and outdoor units properly set? t Are the ADDRESSES of the remote controller properly set? (When using multiple remote controllers) t Have you checked whether the vibration-resistance frame is correctly installed if there is a possible vibration of the outdoor unit. Trial operation CAUTION t Turn on the outdoor unit 3 hours before the test operation to preheat the compressor. t If the compressor is not preheated, ‘CH’ may appear on the outdoor unit PCB depending on the outdoor temperature. Writing and keeping installation checking card fInstallation checking card is enclosed with the installation manual. - Installer should fill out the front side of the card meticulously. - Write basic information such as date of installation, name of an installer, contact information, supervision company etc. - Write additional information such as the name of outdoor unit models, unusual, calculation of the additional amount of refrigerant etc. - Write indoor unit related information such as indoor unit installation location, indoor unit model name etc. fKeep the installation checking card in a designated place and do not lose it. Installation checking card Model AM040FXMDEH/TK AM050FXMDEH/TK AM040FXMDGH/TK AM050FXMDGH/TK AM060FXMDEH/TK AM060FXMDGH/TK Net weight (kg) 100 Net size (W x H x D, mm) 940×1,210×330 103 51 ENGLISH fCheck the power supply between the outdoor unit and the cabinet panel. - 1 phase power supply : L, N - 3 phase power supply : R,S,T,N fCheck the indoor unit. - Check whether you have connected the power and communication cables correctly. (The communication cables between an indoor unit and outdoor unit are F1, F2.) - Check the thermistor sensor, drain pump/hose, and display are connected correctly. fCheck with Key mode or S-Net Pro. - At first, operate all the indoor units with Key mode and operate the indoor units individually with S-Net Pro. - In the beginning of operation, check the compressor operation sound. If there is a boom sound, stop the trial operation. fCheck the operation status of indoor and outdoor unit. - Check whether the cooling operation is done correctly. - Check the individual indoor unit control, wind velocity, and wind flow direction. - Check whether you can hear abnormal sound from indoor unit and outdoor unit. - Check whether the drainage is done correctly in cooling. - Check S-net Pro for detailed operation. fExplain to the user the usage of the air conditioner by referring to the users manual.