USER'S MANUAL Floor Ceiling R410A 50Hz YIFFZC012BAEFA YIFFZC018BAEFA Read this manual before installation and operation Make sure that it is well kept for later reference No. 0150520007 Contents Cautions 3 Safety Precautions 4 Parts and Functions Cleaning and Care 6 7 Troubleshooting 8 Installation Procedure 10 Test Run 22 Cautions tubes with sharp or pointed items, crushing or twisting any tubes, or scraping the coatings off the surfaces. If the refrigerant spurts out and gets into eyes, it may result in serious eye injuries. Do not obstruct or cover the ventilation grille of the air conditioner. Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner. In no case should children be allowed to sit on the outdoor unit. When the indoor unit is turned on, the PCB will test if swing motor is O.K., and then fan motor will start up.So there is a few seconds to wait. In cooling mode,the flaps will swing automatically to a fixed position for anti-condensating. This appliance is not intended for use by persons (including children) with reducedphysical, 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. Disposal of the old air conditioner Before disposing an old air conditioner that goes out of use, please make sure it's inoperative and safe. Unplug the air conditioner in order to avoid the risk of child entrapment. It must be noticed that air conditioner system contains refrigerants, which require specialized waste disposal. The valuable materials contained in a air conditioner can be recycled. Contact your local waste disposal center for proper disposal of an old air conditioner and contact your local authority or your dealer if you have any question. Please ensure that the pipework of your air conditioner does not get damaged prior to being picked up by the relevant waste disposal center, and contribute to environmental awareness by insisting on an appropriate, anti-pollution method of disposal. Disposal of the packaging of your new air conditioner All the packaging materials employed in the package of your new air conditioner may be disposed without any danger to the environment. The cardboard box may be broken or cut into smaller pieces and given to a waste paper disposal service. The wrapping bag made of polyethylene and the polyethylene foam pads contain no fluorochloric hydrocarbon. Specifications The refrigerating circuit is leak-proof. For all the models in this manual, the all-pole discon-nexion connection method should be applied in the power supply. Such means for disconnection must be incorporation in the fixed wiring. All these valuable materials may be taken to a waste collecting center and used again after adequate recycling. Consult your local authorities for the name and address of the waste materials collecting centers and waste paper disposal services nearest to your house. Cooling Safety Instructions and Warnings Indoor temperature max. min. DB/WB 32/23 C DB/WB 18/14 C Outdoor temperature max. min. DB/WB 43/26 C DB/WB 18/- C If the supply cord is damaged, it must be replaced by the manufacturer or its service agentor a similar qualified person. If the fuse on PC board is broken please change it with the type of T3.15A/250VAC. The wiring method should be in line with the local wiring standard. The waste battery shall be disposed properly. The indoor unit installation height is at least 2.5m. The air breaker and the power switch should installed the conveniently reachable pleace for user. Before starting the air conditioner, read the information given in the User's Guide carefully. The User's Guide contains very important observations relating to the assembly, operation and maintenance of the air conditioner. The manufacturer does not accept responsibility for any damages that may arise due to non-observation of the following instruction. Damaged air conditioners are not to be put into operation. In case of doubt, consult your supplier. Use of the air conditioner is to be carried out in strict compliance with the relative instructions set forth in the User's Guide. Installation shall be done by professional people. Don't install unit by yourself. For the purpose of safety, the air conditioner must be properly grounded in accordance with specifications. Always remember to unplug the air conditioner before opening inlet grill. Always grip plug firmly and pull straight out from the outlet. All electrical repairs must be carried out by qualified electricians. Inadequate repairs may result in a major source of danger for the user of the air conditoiner. Do not damage any parts of the air conditioner that carry refrigerant by piercing or perforating the air conditioner's 3 Safety Precautions WARNING! If the power supply cord of this air conditioner is damaged, it must be replaced by the manufacturer or its authorized service personnel only. Use copper wire only. All the cables shall have got the Local authentication certificate. The power cable and connecting cable are self-provided. If the fuse on PC board is broken please change it with the type of T3.15A/250VAC. DANGER! Do not attempt to install this air conditioner by yourself. This unit contains no user-serviceable parts. Always consult authorized service personnel for repairs. When moving, consult authorized service personnel for disconnection and installation of the unit. Do not become excessively chilled by staying for lengthy periods in the direct cooling airflow. Do not insert fingers or objects into the outlet port or intake grills. Do not start and stop air conditioner operation by connecting and disconnecting the power supply cord and so on. Take care not to damage the power supply cord. In the event of a malfunction (burning smell, etc.), stop operation immediately, turn off the circuit breaker, and consult authorized service personnel. CAUTION! Provide occasional ventilation during use. Do not direct air flow at fireplaces or heating apparatuses. Do not place objects on the air conditioner or climb onto it. Do not hang objects from the indoor unit. Do not set flower vases or water containers on top of the air conditioner. Do not expose the air conditioner directly to water. Do not operate the air conditioner with wet hands. Do not pull power supply cord. Turn off power source when not using the unit for extended periods. Check the condition of the installation stand for damage. Do not place animals or plants in the direct path of the air flow. Do not drink the water drained from the air conditioner. Do not use in applications involving the storage of foods, plants or animals, precision equipment or art works. Do not apply any heavy pressure to radiator fins. Operate only with air filters installed. Do not block or cover the intake grill and outlet port. Ensure that any electronic equipment is at least one metre away from either the indoor or outdoor unit. Avoid installing the air conditioner near a fireplace or other heating apparatuses. When installing the indoor and outdoor unit, take precautions to prevent access to infants. Do not use inflammable gases near the air conditioner. Carefully read the following information in order to operate the airconditioner correctly. Below are listed three kinds of Safety Cautions and Suggestions. WARNING! Incorrect operations may result in severe consequences of death or serious injuries. CAUTION! Incorrect operations may result in injuries or machine damages; in some cases may cause serious consequences. INSTRUCTIONS: These information can ensure the correct operation of the machine. Be sure to conform with the following important Safety Cautions. The Safety Cautions should be at hand so that they can be checked at any time when needed. If the conditioner is transferred to the new user, this manual should be as well transferred to the new user. 4 Safety Precautions WARNING! Don't dismantle the outlet of the outdoor unit. If any abnormal phenomena is found (e. g.smell of firing), please cut off the power supply immediately, and contact the dealer to find out the handling method. The exposure of fan is very dangerous whichmay harm human beings. In such case, to continue using the conditioner will damage the conditioner, and may cause electrical shock or fire hazard. When need maintenance and repairment, call dealer to handle it. Incorrect maintenance and repairment may cause water leak, electrical shock and fire hazard. switch off After a long time use of air-conditioner the base should be checked for any damages. If the damaged base is not repaired, the unit may fall down and cause accidents. No goods or nobody is permitted to placed on or stand on outdoor unit. The falling of goods and people may cause accidents. Installed electrical-leaking circuit breaker. It easily cause electrical shock without circuit breaker. Air-conditioner can't be installed in the environment with inflammable gases because the inflammable gases near to air-conditioner may cause fire hazard. Don't operate the air-conditioner with damp hands. Please let the dealer be responsible for installing the conditioner. Incorrect installation may cause water leak, electrical shock and fire hazard. Otherwise will be shocked. Call the dealer to take measures to prevent the refrigerant from leaking. If conditioner is installed in a small room be sure to take every measure in order to prevent suffocation accident even in case of refrigerant leakage. Only use correctly-typed fuse. May not use wire or any other materials replacing fuse, otherwise may cause faults or fire accidents. When conditioner is deinstalled or reinstalleddealer should be respon-sible for them. Incorrect installation may cause water leaking, electrical shock and fire hazard. Connect earthing wire. Earthing wire should not be con- nected to the gas pipe, water pipe, lightning rod or phone line, in-correct earthing may cause shock. Use discharge pipe correctly to ensure efficient discharge. Incorrect pipe use may cause water leaking. Earthing 5 Parts and Functions Indoor unit YIFFXC012BAEFA YIFFXC018BAEFA 10 1 11 3 9 POWER 4 OPER 5 TIMER 6 COMP 7 EMER 2 3 8 (1) Operating Control Panel (2) Emergency Switch (3) Remote Control Signal Receiver (4) Power Indicator Lamp (Red) (5) Operation Indicator Lamp (Green) (6) Timer Indicator Lamp (Yellow) (7) Compressor Run Lamp (Green) (8) Intake Grill (9) Air Filter (10) UP/DOWN Air Direction Flaps (11) RIGHT/LEFT Air Direction Louvers (behind UP/DOWN Air Direction Flaps) Note : For the wired control type unit, the unit state should be checked by the wired controller, instead of the remote receiver. and if you set the TIMER function, the TIMER LED on the remote receiver will not be on. Outdoor unit YIFFYC012BAEFA YIFFYC018BAEFA Air inlet Air outlet Compressor (Inside of unit) 6 Cleaning and Care CAUTION: Before cleaning the air conditioner, be sure to turn it off and disconnect the Power Supply Cord. Be sure the Intake Grill is installed securely. When removing and replacing the air filters, be sure not to touch the heat exchanger, or personal injury may result. Cleaning the Air Filter 1. Open the Intake Grill Pull out both sides and the center of the Intake Grill. Side Panel Hook About 30 mm Arm 2. Pull the Air Filters upward to remove them Push the Air Filter handles away from the Intake Grille in the direction as illustrated, then pull out Air Filters. Notch Arm Intake Grill Air Filter Bracket 3. Clean the Air Filters Remove the dust from the Air Filters by vacuum cleaner or washing them. After washing, allow the Air Filters to dry thoroughly in an area protected from sunlight. Air Filter (Figure 1) Base Handle (Figure 2) Filter bracket 4. Re-attach the Air Filters to the Intake Grill (1)The Filters fit onto the inside of the intake Grill.(Figure 1) (2)The bottom edges of the Air Filters should fit into the filter brackets. (Figure 1) (3)The Air Filters should be pushed down so that their top edges fit under the projections at the top of the Intake Grill. (Figure 2) 5. Close the intake grill Push in both sides and the center of the Intake Grill. Dust can be cleaned from the Air Filter either with a vacuum cleaner, or by washing the filter in a solution of mild detergent and warm water. If you wash the filter, be sure to allow it to dry thoroughly in a shady place before reinstalling. If dirt is allowed to accumulate on the Air Filter, air flow will be reduced, operating efficiency lowers and noise increases. During periods of normal use, the Air Filters should be cleaned every two weeks. 7 Troubleshooting Followings are not problems Sound of water flowing is not a problem. During unit operation or at stop, a swishing or gurgling noise may be heard. This noise is generated by refrigerant flowing in the system. Sound of cracking is heard. During unit operation, a cracking noise may be heard. This noise is generated by the casing expanding or shrinking because of temperature changes. Smell are generated. This is because the system circulates smells from the interior air such as the smell of cigarettes or the painting on the furniture. During operation, white fog or steam comes out from the indoor unit. When unit is running at places like restaurant, etc. where dense edible oil fumes always exist, this will happen. In cooling operation, unit switches to blowing operation. To prevent frost from accumulating on indoor heat exchanger, unit will switch to blowing operation for a while then resume cooling operation. Unit will not restart after stop. Though ON/OFF button is set to ON, the unit won't resume cooling, dry or heating operation in 3 min after it is stopped, this is because of 3-min-delay protection circuit. Won't start? Please wait 3 minutes No outlet air or fan speed can't be changed in dry mode. Unit will reduce fan speed repeatedly and automatically if room temp. is too low in dry operation. In heating operation, water or steam are blown out of outdoor unit. This occurs when frost accumulated on the outdoor unit is removed. (during defrosting operation) In heating operation, indoor fan won't stop even if unit is stopped. After unit stop, indoor fan will go on running until indoor unit cools down. Before ask for services, please first check your unit against the following. Air conditioner won't start. Is power supply switch turned on? Is city power supply normal? Is leakage current breaker activated? This is very dangerous, please disconnect power supply immediately and contact your dealer. Power failure? Power supply switch is not set at ON. Poor cooling or heating Are operation control adjusted correctly as specified? Is air filter too dirty? Proper temp Are horizontal louvers at up position (in heating mode)? Any doors or windows left open? 8 Are there any obstacles in inlet or outlet grill? Troubleshooting Poor cooling Is there any direct sunlight in the room? If there are unexpected heat sources in the room? Too many people in the room? Cold air blows out (in heating mode). Is air conditioner in standby condition in heating mode? If your unit still can't work properly after above mentioned checks, or following problems occur, please stop it immediately and contact your dealer. Fuses or circuit breakers often blow out. Water comes out in cooling/dry operation. Operation is abnormal or sound is heard. YIFFYC012BAEFA YIFFYC018BAEFA LED flash times of signal receiver board Wired controller Contents of Malfunction display Possible reasons 1 E1 Malfunction of indoor unit ambient temperature sensor Sensor disconected,or broken, or at wrong position, or short circuit 2 E2 Malfunction of indoor unit piping temperature sensor Sensor disconected, or broken, or at wrong position, or short circuit 5 E5 Compressor overcurrent / phase sequence wrong Overcurrent after compressor running or power suppl phase sequence wrong before compressor running.It occurs 3 times in 1 hour, comfirm the failure, the former twice will not alarm. 9 E8 Abnormal communication between wired controller and indoor unit Wrong connection or wired controller broken, or PCB faulty 10 E0 Malfunction of drain system Pump motor disconnected or at wrong position,or the float switch disconnected, or at wrong position, or the short circuit bridge disconne ted 14 FC Indoor coil temperature too high in cooling mode Refrigerant leakage or indoor coil sensor falling off 9 Installation Procedure Indoor Unit Please ask the dealer or specialist to install, never try by the SELECTING THE MOUNTING POSITION users themselves. After the installation please be sure of the Decide the mounting position with the customer as following conditions. follows: WARNING: (1) Install the indoor unit level on a strong wall, floor, ceiling Please call dealer to install the air-conditioner. which is not subject to vibration. Incorrect installation may cause water leaking, shock and (2) The inlet and outlet ports should not be obstructed.The fire hazard. air should be able to blow all over the room. (3) Install the unit near an electric outlet or special branch CAUTION: circuit. Air-conditioner can't be installed in the environment (4) Do not install the unit where it will be exposed to direct with inflammable gases because the inflammable gases sunlight. near air-conditioner may cause fire hazard. (5) Install the unit where connection to the outdoor unit is Installed electrical-leaking circuit breaker. easy. It easily cause electrical shock without circuit breaker. (6) Install the unit where the drain pipe can be easily installed. Connect earthing wire. (7) Take servicing etc. into consideration and leave the Earthing wire should not be connected to the gas pipe, water spaces shown in the figure below. Also install the unit where pipe, lightning rod or phone line, incorrect earthing may the filter can be removed. cause shock. Use discharge pipe correctly to ensure efficient WARNING: discharge. Install at a place that can withstand the weight of the indoor and Incorrect pipe use may cause water leaking. outdoor units and install positively so that the units will not topple Earthing or fall. Wiring Air-conditioner should be equipped with special power supply CAUTION: wire. (1)Do not install where there is the danger of combustible gas Location leakage. (2)Do not install near heat sources. (3)If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit. Air-conditioner should be located in well-vented and easily accessible place. Air-conditioner should not be located in the following places: (1) Places with machine oils or other oil vapours. (2) Seaside with high salt content in the air. (3) Near hot spring with high content of sulfide gases. (4) Area with frequent fluctuation of voltage e.g. factory, etc. (5) In vehicles or ships. (6) Kitchen with heavy oil vapour or humidity. (7) Near the machine emitting electric-magnetic waves. (8) Places with acid, alkali vapour. Choose the following locations: (1) Capable of supporting air conditioner weight, don't increase operating noise and vibration. (2) Hot vapour from outdoor unit outlet and operating noise don't disturb neighbour. (3) No obstacles around the outdoor unit outlet. TV, radio, acoustic appliances etc. are at least 1 m far away from the indoor unit, outdoor unit, power supply wire, connecting wire, pipes, otherwise images may be disturbed or noises be created. As required, take measures against heavy snow. Under ceiling Left 30 cm or more Floor console Ceiling may be difference Right Indoor unit 1.5m Left 30 cm or more Right 1.5m 2 cm or more Outdoor unit INSTALLATION PARTS The following installation parts are optional parts. Use them as required. Optional parts Adhesive tape Drain hose Saddle (L.S) with screws Piping hole cover Heat insulation material Plastic clamp Indoor unit Putty 10 1.5m 30 cm or more Installation Procedure Indoor Unit PREPARING INDOOR UNIT INSTALLATION Remove the intake grill Open the intake grill and remove the three or four or six screws. Note: The main unit can be wired before the indoor unit is installed. Select the most appropriate installation order. Intake grill Fig. 1 A.FLOOR CONSOLE TYPE 1.Drilling for piping Select piping and drain directions. The piping and drain can be made in three directions as shown in the Fig.1. rear right down The drain hose can be connected to either the left or right side. (Fig.2) Fig. 2 Drain hose (Left side) When the directions are selected, drill a 7 cm dia. hole on the wall so that the hole is tilted downward toward the outdoor for smooth water flow. When the pipe is led out from the rear, make a hole at the position shown in Fig.3. Drain hose (Right side) Fig. 3 Wall 6mm 7cm Indoor unit When installing set to wall, install the accessory wall bracket at the position shown in Fig. 4, and mount the set to it. outdoor unit Fig. 4 99cm 50cm 24.5cm Wall bracket 7cm hole 3.5cm hole 12.5cm 2. Installing drain hose Select whether the drain hose will be connected to the left or right side (Fig.2). Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener (Fig.5). Fig. 5 6.5cm 53cm 4.5cm 65.5cm Side of set 6.5cm 10cm Drain pan Nylon fastener Drain hose Wrap the insulation (drain hose) around the drain hose connection. (Fig.6) Fig. 6 Drain pan Drain hose 11 Insulation (Drain hose) Installation Procedure Indoor Unit Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port of the indoor unit. (Fig.7) NO OK Fig.7 Arrange the drain hose lower than this portion. CAUTION: Do not install the unit drain hose side is too high. Height A should be less than 5 mm.(Fig.8) NO Drain hose Fig.8 Drain hose A B. UNDER CEILING TYPE Using the installation template, drill holes for piping and anchor bolts(for holes).(Fig.9) Fig.9 A 900m Drilling position for anchor bolt Installation template 200m Ceilling Wall Drilling position for piping 1.Drilling for piping Select piping and drain directions. (Fig.10) Fig. 10 Rear (Install the drain hose in the direction.) CAUTION: Install the drain hose at the rear. It should not be installed on the top or right side. Right When the directions are selected, drill 80mm and 50mm or 150mm dia. hole on the wall so that the hole is tilted downward toward the outdoor for smooth water flow. (Fig.11) Fig.11 Wall 2.Drilling holes for anchor bolts and installing the anchor bolts With a concrete drill, drill four 12.7 mm dia. Holes. (Fig.12) Fig.12 60 to 70mm 6mm 12.7mm Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor bolts with a hammer. (Fig.13) Fig.13 12 Installation Procedure Indoor Unit 3. Installing brackets Fig.14A Install the brackets with nuts, washers and spring washers. (Fig.14) Fig.14B Bracket (Left) Spring washer Special nut 4. Installing indoor unit Bracket Fig.15 Reset the hex bolts as shown in Fig.15. Hex bolt 8 to 13mm Indoor unit Apply the indoor unit to the brackets. (Fig.16) Now, securely tighten the hex bolts in both sides. Bracket (Right) Fig.16 Bolt Bracket Indoor unit 5. Installing the drain hose Select whether the drain hose will be connected to the left or right side.(Fig.2) Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener.(Fig.5) Wrap the insulation (drain hose) around the drain hose connection. (Fig.6) Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port of the indoor unit. (Fig.17) Fig.17 Remove the hole cover. Arrange the drain hose lower than this portion Drain hose NO OK When drain hose is arranged backward. Secure the drain hose with the VT wire. (Fig.18) Fig.18 Piping hole VT wire hole VT wire Base (Bottom) Intake grill Pass the drain hose through here Drain hose Cut the grill 13 Installation Procedure Indoor Unit CONNECTING THE PIPING Table 1 1. Flare processing (1) Cut the connection pipe with pipe cutters so that the pipe is not deformed. (2) Holding the pipe downward so that cuttings cannot enter the pipe, remove the burrs. (3) Remove the flare nut from the indoor unit pipe and outdoor unit and assemble as shown in Table1 and insert the flare nut onto the pipe, and flare with a flaring tool. (4) Check if the flared part "L" (Fig.1) is spread uniformly and that there are no cracks. Model Pipe YIFFYC012BAEFA YIFFYC018BAEFA Diameter of pipe Liquid pipe 9.52mm (3/8") Gas pipe 15.88mm (5/8") Pipe Small pipe Flare nut Small (width across flats 22mm) Large pipe Large (width across flats 24mm) Fig.1 Width across flats L dimension L Dimension A (mm) 1.4~2.2 A (5) Capillary accessory should be installed between indoor unit and connecting pipe. The capillary accessory was put in accessory bag in indoor unit 2. Bending pipes The pipes are shaped by your hands. Be careful not to collapse them. Pipe expander OK NO Extend the pipe by unwinding it MOUNT THE COVER PLATE AND THE INTAKE GRILL 1.Mount the cover plate (right) (1) Cut a pipe exit hole in the right plate. This is only when the pipe exits from the right side. This operation is not required when the protrusion is on the top or rear. (2) Insert the hinges on the bottom of the intake grill into the holes in the base assembly. Then mount the arms to the three areas on the top of the intake grill. Cover plate (right) (2) Join the cover plate (right) and mount with screws. 31 2. Mount the cover plate (left) Join the cover plate (left) and mount with screws. 3. Mount the intake grill. (1) Cut the right side of the intake grill. This is only when the pipe exits from the right side 14 Installation Procedure Outdoor Unit 1. Accessories Edging "Edging" for protection of electric wires from an opening edge. 2. Selection of the place of installation Select the place of installation satisfying the following conditions and, at the same time, obtain a consent from the client or user. Place where air circulates. Place free from heat radiation from other heat sources. Place where drain water may be discharged. Place where noise and hot air may not disturb the neighborhood. Place where there is not heavy snowfall in the winter time. Place where obstacles do not exist near the air inlet and air outlet . Place where the air outlet may not be exposed to a strong wind. Place surrounded at four sides are not suitable for installation. A 1m or more of overhead space is needed for the unit. Mount guide-louvers to place where short-circuit is a possibility. When installing several units, secure sufficient suction space to avoid short circuiting. (1) Open space requirement around the unit L2 Air inlet L3 500 (Servicing space) Air inlet Note : (1). Fix the parts with screws (2). Don't intake the strong wind directly to the outlet air-flow hole. (3). A one meter distance should be kept from the unit top (4). Don't block the surroundings of the unit with sundries Air outlet L1 Unit: mm Case Distance L1 L2 L3 I II III open open 300 150 0 300 500 open NO Wind direction 150 (2) Installation where the area with strong winds. Install the unit so that the air outlet section of the unit must NOT be faced toward wind direction. 3. Installation of outdoor unit (1) Installation Fix the unit in a proper way according to the condition of a place where it is installed by referring to the following . (a) Concrete foundation (b) Foundation anchor Unit Anchor bolt Unit Concrete foundation Concrete foundation To fix by bolts Anchor bolt 15 Installation Procedure Outdoor Unit (2) Installation sketch of outdoor unit YIFFYC012BAEFA YIFFYC018BAEFA 4. Refrigerant piping (1) Piping diagram Flare connection 3-way stop valve Gas pipe Indoor unit Outdoor unit Liquid pipe 3-way stop valve (YIFFYC018BAEFA) 2-way stop valve (YIFFYC012BAEFA) (2) Piping size 90+0.5 YIFFYC012BAEFA YIFFYC018BAEFA Liquid pipe 9.52x0.8mm Gas pipe 15.88x1.0mm Install the removed flare nuts to the pipes to be connected, then flare the pipes. 16 Installation Procedure Outdoor Unit Precautions for refrigerant piping Do not twist or crush piping. Be sure that no dust is mixed in piping. Bend piping with as wide angle as possible. Keep insulating both gas and liquid piping. Check flare-connected area for gas leakage. (3) Piping connection Connecting method (indoor unit) Apply refrigerant oil at half union as large and flare nut. To bend a pipe, give the roundness as possible not to crush the pipe. When connecting pipe, hold the pipe centre to centre then screw nut on by hand, refer to Fig. Be careful not to let foreign matters, such as sands enter the pipe. Forced fastening without centering may damage the threads and cause a gas leakage. Pipe dia Liquid pipe 6.35mm Fastening torque 14.2-17.2N.m 32.7-39.9N.m 49.5-60.3N.m Liquid pipe 9.52mm Gas pipe 12.7mm Gas pipe 15.88mm Gas pipe 19.05mm 61.8-75.4N.m 97.2-118.6N.m (4) Air discharging method After finishing connection of refrigerant pipe, it shall perform air tightness test. The air tightness test adopts nitrogen tank to give pressure according to the pipe connection mode as the following figure shown. The gas and liquid valve are all in close state. In order to prevent the nitrogen entering the circulation system of outdoor unit, tighten the valve rod before giving pressure (both gas and liquid valve rods). Low pressure peizometer High pressure peizometer Indoor Outdoor Completely tightened Flare part Completely tightened Flare part Indoor units 3-way valve totally closed (Gas side) VL VH Meter separator Discharging valve Manhole Dropping valve Nitrogen tank Outdoor units 3-way valve totally closed (Liquid side) (YIFFYC018BAEFA) 2-way valve totally closed (Liquid side) (YIFFYC012BAEFA) 17 Installation Procedure Outdoor Unit Cylinder pressure gauge 43.5PSI(3.0kg/cm2g) First step: pressurize over 3 minutes. 2 Second step: 217.5PSI (15kg/cm g) pressurize over 3 minutes. Large leakage will be found. Third step: 435PSI (30kg/cm2g) pressurize about 24 hours. Little leakage will be found. Check if the pressure drops The pressure does not drop-passed The pressure drops-check the leaking point. From pressurizing to 24 hours later, each 1 difference of ambient temperature will make 1.45PSI (0.1kg/cm2g) pressure change. It shall be corrected during test. Line pressure gauge Tubing bring brazed Sweat joint Large slip-on connector Service house Cylinder of nitrogen Checking the leaking point In the first to third test steps, if the pressure drops, check the leakage in each joint use sense of hearing, feeling and soap water, etc. methods to find the leaking point. After confirming the leaking point, welding it again or tighten the nut tightly again. (5) Piping and indoor unit vacuumizing Use vacuum pump to perform vacuumizing. It is strictly forbidden to use the refrigerant to remove the air inside the system. Low pressure peizometer After air tightness test and discharging all the nitrogen, High pressure peizometer connect the vacuum pump as 3-way valve totally closed the following figure shown. Indoor Completely tightened (Gas side) Outdoor Flare part VL VH Meter separator Discharging valve P Completely tightened Flare part Vacuum pump Indoor units Outdoor units 3-way valve totally closed (Liquid side) (YIFFYC018BAEFA) 2-way valve totally closed (Liquid side) (YIFFYC012BAEFA) It shall use the vacuum pump of (lower than -14.6PSI)high vacuum degree and large air discharging (over 40l/min). The vacuumizing time depends on the length of the connecting pipe, generally is 1~2 hours. When vacuumizing, it shall be confirmed both gas and liquid side valves are closed. If after 2 hours vacuumizing, it cannot reach the vacuum degree below -14.6PSI, it can be vacuumized for other 1 hour. If after 3 hours vacuumizing, it still cannot reach the vacuum degree below -14.6PSI, check if there is any leaking point and repair the them. If after over 2 hours vacuumizing, the vacuum degree is below -14.6PSI, close the VL and VH on the meter separator and stop vacuumizing. 1 hour later to confirm if the vacuum degree changes. If changes, it indicates there is leaking point in the system. Check the leaking point and repair. After finishing the above vacuumizing, change the vacuum pump into refrigerant pump to charge the refrigerant. (6) Charging amount of refrigerant When the total length (L) of the two units' connecting pipe is less than 7.5m, it is unnecessary to charge additional refrigerant. If the connecting pipe (L) exceeds 7.5m, it shall charge Mg additional refrigerant per meter. That is: Refrigerant charging amount = (L-7.5) x 50 (g) Only in COOLING operation can charge the additional refrigerant. When charging, the refrigerant shall be charged from the charging nozzle of low pressure vavle. Be carefull when charging refrigerant, do not let the air mix into the system,and must charge the additional refrigerant in liquid condition. 18 Installation Procedure Electric wiring ELECTRICAL WIRING Connect wiring to the terminal blocks A. For solid core wiring (or F-cable) (Fig.A) (1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 25mm of the exposed solid wire. (2) Using a screwdriver, remove the terminal screw(s) on the terminal board. (3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw. (4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a screw driver. B. For strand wiring (Fig.B) (1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 10mm of the exposed strand wiring. (2) Using a screwdriver, remove the terminal screw(s) on the terminal board. (3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end. (4) Position the round terminal wire, and replace and tighten the terminal screw using a screw driver. Loop Insulation Strip 10mm B. Strand wire Strip 25mm A. Solid wire Screw with special washer Screw with special washer Round terminal Round terminal Terminal board Round terminal Wire Wire Insulation tube Fix connection cord and power cable at the cord clamp Cord clamp After passing the connection cord and power cable through the insulation tube, fasten it with the cord clamp, as shown right. Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube. CAUTION: Match the terminal block numbers and connection cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts. Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire. Always fasten the outside covering of the connection cord with the cord clamp.(If the insulator is chafed, electric leakage may occur.) Always connect the ground wire. Wiring of indoor unit Electrical component box2 Electrical component box1 1 2 3 YIFFXC012BAEFA YIFFXC018BAEFA To outdoor Unit 19 Installation Procedure Electric wiring (4) Wiring 1.Remove the cord clamp. 2.Process the end of the connection cords to the dimensions shown in the right figure. 3.Connect the end of the connection cord fully into the terminal block. 4.Fasten the connection cord with a cord clamp. 5.Fasten the end of the connection cord with the screw. WARNING: (1) Always use a special branch circuit and install a special receptacle to supply power to the room air conditioner. (2) Use a circuit breaker and receptacle matched to the capacity of the room air conditioner. (3) The circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the poles of the wiring and has an isolation distance of at least 3mm between the contacts of each pole. (4) Perform wiring work in accordance with standards so that the room air conditioner can be operated safely and positively. (5) Install a leakage circuit breaker in accordance with the related laws and regulations and electric company standards. CAUTION: (1) The power source capacity must be the sum of the room air conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity. (2) When the voltage is too low and the air conditioner is difficult to start, contact the power company the voltage raised. WARNING DANGER OF BODILY INJURY OR DEATH TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE MAKING ANY ELECTRIC CONNECTIONS. GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS. Selection of size of power supply and interconnecting wires. Precautions for Electric wiring Electric wiring work should be conducted only by authorized personnel. Do not connect more than three wires to the terminal block. Always use round type crimped terminal lugs with insulated grip on the ends of the wires. Use copper conductor only. Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2% voltage drop.) Item Model Phase Circuit breaker Earth leakage breaker Power source Overcurrent protector wire size Switch breaker Switch breaker Leak current rated capacity (minimum) (A) (A) (mA) 2 (A) (mm ) YIFFYC012BAEFA 1 30 10 2.5 30 30 YIFFYC018BAEFA 1 30 12 2.5 30 30 e cal 20 Installation Procedure Electric wiring Wiring connection Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by terminals. For the detailed wiring connection with the indoor units, see the corresponding indoor operation and instruction manual. YIFFYC012BAEFA YIFFYC018BAEFA Y/G Y/G Y/G To Indoor Unit POWER SUPPLY: 1PH,220V~,50Hz POWER SUPPLY: 1PH,220V~,50Hz FIG.1 To Indoor Unit FIG.2 WARNING DO NOT CONNECT THE NEUTRAL WIRE N TO R , S OR T PHASE. INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIG.1 FIG.2 INCORRECT WIRING CAUSE EQUIPMENT DAMAGE. Wiring procedure 1) Remove set screws on the side before taking off the front panel toward the direction shown in figure. 2) Connect wires to the terminal block correctly and fix the wires with a wire clamp equipped nearby the terminal block. 3) Route the wires in a proper way and penetrate the wires through the opening for electric wiring on the side panel. 21 Test Run Check items 1. Indoor unit Is operation of each button on the remote control unit normal? Does each lamp light normally? Do not air flow direction louvers operate normally? Is the drain normal? 2. Outdoor unit Is there any abnormal noise and vibration during operation? Will noise, wind, or drain water from the unit disturb the neighbors? Is there any gas leakage? Customer guidance Explain the following to the customer in accordance with the operation manual: (1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote control unit operations. (2) Air filter removal and cleaning, and how to use air louvers. (3) Give the operation and installation manuals to the customer. Test run CAUTION THIS UNIT WILL BE STARTED INSTANTLY WITHOUT "ON" OPERATION WHEN ELECTRIC POWER IS SUPPLIED.BE SURE TO EXECUTE "OFF" OPERATION BEFORE ELECTRIC POWER IS DISCONNECTED FOR SERVICING. This unit has a function of automatic restart system after recovering power stoppage. (1) Before starting test run (for Heat pump models) Confirm whether the power source breaker (main switch) of the unit has been turned on for over 12 hrs to energize the crankcase heater in advance of operation. (2) Test run Run the unit continuously for about 30 minutes, and check the following. Suction pressure at check joint of service valve for gas pipe. Discharge pressure at check joint on the compressor discharge pipe. Temperature difference between return air and supply air for indoor unit. 22 2015 Johnson Controls, lnc. www.johnsoncontrols.com YHFFXCBB--150414 Johnson Controls reserve the right to change product features without prior notice.
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