website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html LG System Heat Pump Indoor Unit INSTALLATION MANUAL MODELS: CRNN-BN/BJ Series Type: Ceiling Concealed Duct - Low Static IMPORTANT • Please read this installation manual completely before installing the product. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only. • Please retain this installation manual for future reference after reading it thoroughly. Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Installation Parts Provided....3 Safety Precautions .................4 Installation Selection the best location ....7 Ceiling opening dimension and hanging bolt location ......8 Wiring Connection .................9 ❏ Installation guide map ❏ Four type "A" screws & plastic anchors ❏ Connecting cable ❏ Level gauge ❏ Screw driver ❏ Electric drill ❏ Hole core drill ❏ Horizontal meter ❏ Pipes: Gas side Liquid side (Refer to Product Data) ❏ Insulation materials ❏ Additional drain pipe ❏ Flaring tool set ❏ Specified torque wrenches (different depending on model No.) ❏ Spanner .......Half union ❏ A glass of water ❏ Screw driver Check the Drainage.............10 Installation of Remote Control..................................13 ❏ Hexagonal wrench ❏ Gas-leak detector ❏ Vacuum pump ❏ Gauge manifold Drain Pipe Work...................14 Installation of Drain Pump ...16 Optional Operation ..............18 ❏ Two type "B" screws 2 Indoor Unit ❏ Owner's manual ❏ Thermometer Installation Parts Provided Installation Air filters Remote Control Name Clamp metal Insulation for fitting Screws for duct flanges Clamp Quantity 1 EA 1 set 1 set 8 EA (Other) • Owner's manual • Installation manual Shape for gas pipe for liquid pipe Installation Manual 3 Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Be sure to read before installing the air conditioner. ■ Be sure to observe the cautions specified here as they include important items related to safety. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. ■ Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. ■ Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Always ground the product. • There is risk of fire or electric shock. • Do not disassemble or repair the product. There is risk of fire or electric shock. • There is risk of fire or electric shock. Install the panel and the cover of control box securely. Always install a dedicated circuit and breaker. Use the correctly rated breaker or fuse. • There is risk of fire or electric shock. • Improper wiring or installation may cause fire or electric shock • There is risk of fire or electric shock. 4 Indoor Unit Safety Precautions Do not modify or extend the power cable. Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open. Be cautious when unpacking and installing the product. • There is risk of fire or electric shock. • Moisture may condense and wet or damage furniture. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator. For installation, always contact the dealer or an Authorized Service Center. Do not install the product on a defective installation stand. Be sure the installation area does not deteriorate with age. • There is risk of fire, electric shock, explosion, or injury. • It may cause injury, accident, or damage to the product. • If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury. ■ Operation Do not store or use flammable gas or combustibles near the product. • There is risk of fire or failure of product. Gasolin Installation Manual 5 Safety Precautions ■ Installation Always check for gas (refrigerant) leakage after installation or repair of product. Install the drain hose to ensure that water is drained away properly. Keep level even when installing the product. • Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage. • To avoid vibration or water leakage. 90˚ Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. Use two or more people to lift and transport the product. Do not install the product where it will be exposed to sea wind (salt spray) directly. • It may cause a problem for your neighbors. • Avoid personal injury. • It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation. 6 Indoor Unit Installation Installation Read completely, then follow step by step. Selection of the best location Install the air conditioner in the location that satisfies the following conditions. • The place shall easily bear a load exceeding four times the indoor unit’s weight. • The place shall be able to inspect the unit as the figure. • The place where the unit shall be leveled. • The place shall allow easy water drainage.(Suitable dimension “H” is necessary to get a slope to drain as figure.) • The place shall easily connect with the outdoor unit. • The place where the unit is not affected by an electrical noise. • The place where air circulation in the room will be good . • There should not be any heat source or steam near the unit. (unit: mm) 600 Inspection hole (600X600) Control box 1000 Top view 600 Front Front view H CAUTION : In case that the unit is installed near the sea, the installation parts may be corroded by salt, The installation parts (and the unit) should be taken appropriate anti-corrosion measures. Installation Manual 7 Installation Ceiling dimension and hanging bolt location ■ Installation of Unit Install the unit above the ceiling correctly. D B CASE 1 C E POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. F (Unit:mm) Dimension A C D E F G H I 2.1(7,165) 783 667 300 100 500 20 639 120 220 2.6(8,871) 873 767 300 100 500 20 729 120 220 3.5(11,942) 873 767 300 100 500 20 729 120 220 I B H A 1-3 mm Capacity [kW(Btu/h)] G CASE 2 Drainage hole • Install the unit leaning to a drainage hole side as a figure for easy water drainage. M10 Nut POSITION OF CONSOLE BOLT • A place where the unit will be leveled and that can support the weight of the unit. • A place where the unit can withstand its vibration. • A place where service can be easily performed. X4 (Local M10 SP. washer X 4 supply) M10 washer X4 X4 (Local M10 SP. washer X 4 supply) M10 Nut X4 M10 washer NOTICE • Throughly study the following installation locations: 1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the fan, the fin of the heat exchanger, resulting in heat exchange reduction, spraying, dispersing of water drops, etc. In these cases, take the following actions: • Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner. • Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oil steam. 2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories, etc. 3. Avoid places where inflammable gas is generated, flows in, is stored or vented. 4. Avoid places where sulfurous acid gas or corrosive gas is generated. 5. Avoid places near high frequency generators. 8 Indoor Unit Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the ceiling. • Mount the suspension bolts to the set anchor firmly. • Secure the installation plates onto the suspension bolts (adjust level roughly) using nuts, washers and spring washers. Old building New building 1 Set anchor 2 Plate washer 3 Spring washer 4 Nut CAUTION : Tighten the nut and bolt to prevent unit falling. 5 Suspension bolts Wiring Connection Connect the wires to the terminals on the control board individually according to the outdoor unit connection. • Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively Terminal Block in Indoor 1(L) 2(N) 3 Terminal Block in Outdoor 4 C D Vcc A B INDOOR POWER INPUT WARNING : Make sure that the screws of the terminal are free from looseness. Clamping of cables 1) Arrange 2 power cables on the control panel. 2) First, fasten the steel clamp with a screw to the inner boss of control panel. 3) For the cooling model, fix the other side of the clamp with a screw strongly. For the heat pump model, put the 0.75mm2 cable(thinner cable) on the clamp and tighten it with a plastic clamp to the other boss of the control panel. 4) In Australia, the length of power supply cord measured from the entry of the power supply cord to the middle of live pin on the power plug should be over 1.8m. Installation Manual 9 Installation THERMAL INSULATION All thermal insulation must comply with local requirement. Union for liquid pipe Refrigerant pipe and thermal insulator(Local supply) Hose crip for thermal insulator (Local supply) Thermal insulator for refrigerant pipe (Local supply) Union for gas pipe Checking the Drainage 1. Remove the Air Filter. 2. Check the drainage. • Spray one or two glasses of water upon the evaporator. • Ensure that water flows drain hose of indoor unit without any leakage. 10 Indoor Unit Thermal insulator for refrigerant pipe (Local supply) Thermal insulator for piping(Local supply) Overlap with thermal insulator for piping. Hose crip for thermal insulator(Local supply) Make sure that there is no clearance here. Installation CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 5mm. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation. 1~3mm Ceiling Drainage hole CORRECT Drainage hole INCORRECT CAUTION FOR GRADIENT OF UNIT AND DRAIN PIPING • Possible drain-head height is up to 700mm. So, it must be installed below 700mm. • Keep the drain hose downward up to 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part. Lay the drain hose with a downware inclination so water will drain out. 1/50~1/100 Drain Pipe MAX 700mm Drain Pump INCORRECT Applied U-Trap Dimension CORRECT • Install the P-Trap (or U-Trap) to prevent a water leakage caused by the blocking of intake air filter. A ≥ 70mm B ≥ 2C C ≥ 2 x SP SP = External Pressure (mmAq) Ex) External Pressure = 10mmAq A ≥ 70mm B ≥ 40mm C ≥ 20mm B C U-Trap A Installation Manual 11 Installation CAUTION: After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover. 2) Provide a circuit breaker switch between power source and the unit. 3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.) 4) Specification of power source 5) Confirm that electrical capacity is sufficient. 6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate. 7) Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.) 8) Never fail to equip a leakage breaker where it is wet or moist. 9) The following troubles would be caused by voltage drop-down. • Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a overload protection device. • Proper starting power is not given to the compressor. HAND OVER Teach the customer the operation and maintenance procedures, using the operation manual. (air filter cleaning, temperature control, etc.) 12 Indoor Unit Installation Installation of Remote Control • Although the room themperature sensor is in the indoor unit, the remote control should be installed in such places away from direct sunlight and high humidity. Installation of the remote control • Select places that are not splashed with water. • Select control position after receiving customer approval. • The room temperature sensor is built in the indoor unit. • This remote control equipped with liquid crystal display. If this position is higher or lower, display is difficult to see.(The standard height is 1.2 ~1.5m high) Routing of the remote control cord • Keep the remote control cord away from the refrigerant piping and the drain piping. • To protect the remote control cord from electrical noise, place the cord at least 5cm away from other power cables (audio equipment. television set, etc.) • If the remote control cord is secured to the wall, provide a trap at the top of the cord to prevent water droplets from running. CAUTION : Use the wireless remote control with the wired. If you want to use wireless alone, you should do following process. 1) Do auto addressing in connecting the wired. 2) After compelting auto addressing, turn off the power and disconnect the wired. WIRED REMOTE CONTROL INSTALLATION DISASSEMBLING • Separate the under plate from Remote control box. Front case Th • Attach insulator to under plate. el ow er pa rt Lever carefully the box open using a screw driver, etc. Remote control box body • Fix the under plate on the wall • Fix the cord clamps on the wall by ø 3 tapping screws (accessory). • Fix the remote control cord. Face of wall Cord clamp (accessory) Under plate Screw (accessory) Remote control ELECTRICAL WIRING (Main board) CN REMO Wire and make sure that teminal numbers are matched on unit side and remote control side. The maximum length of the cord is 100m. If the length of the cord exceeds 50m, 2 use a wire size greater than 0.5mm . Installation Manual 13 Installation Drain Pipe Work 1) Drain pipe gradient and support a) - The drain pipe must be fitted at a gradient of at least 1/100. - The drain pipe should be as short as possible and free from airlocks. Indoor unit Gradient of least 1 / 100 (1cm / 1m) b) - Suspension bolts should be used th support long stretches of drain pipe in order to ensure that a gradient of 1/100 is maintained (PVC pipe should not be bent) Spacing of supports for horizontal piping Class Norminal diameter Spacing Rigid PVC pipe 25~40mm 1.0m or less c) - The length of pipe laid horizontally should be kept a minimum. 2) Drain trap Fit any indoor unit whose drain pipe connection is subjected to negative pressure, with a drain trap. a) Rig the drain trap shown in the drawing below. Indoor unit H H b) Provide one trap per unit. A single trap for converging units will prove ineffective. c) Rig the trap to allow for future changing. Plug Indoor unit Indoor unit Plug 14 Indoor Unit Installation 3) Ground drain piping a) It is standard work practice to make connections to the main pipe from above. The pipe down from the combination should be as large as possible. Face the vent pipe mouth downward to keep foreign matter from penetrating the system Face piping downward Vent pipe b) The pipe work should be kept as short as possible and he number of indoor units per group kept to a minimum. 4) Use of an auxiliary drain hose(flexible) a) It the drain pan made of polystyrene foam is used then an auxiliary drain hose(flexible) is also essential a flexible drain hose permits the drain socket and drain pipe to be connected without difficulty and prevents any undue strain being placed on he drain pan. Metal clamp Auxiliary drain hose Drain pan Thermal insulation (drain pipe area) Metal clamp Thermal insulation(bend area) ❈ Important points - The drain pipe should be at least equal in size to that of the indoor unit. - The drain pipe is thermally insulated to prevent the formation of condensation inside the pipe. - The drain up mechanism should be fitted before the indoor unit is installed and when the electricity has been connected some water should be added to the drain pan and the drain pump check to see that it is functioning correctly. - Al connections should be secure. (Special care is needed with PVC pipe) - Insulate auxiliary drain hose with thermal insulation band. Installation of Ceiling Concealed Duct(Low-Static) Type Indoor Unit Installation Manual 15 Installation Installation of drain pump 1) Safety First • Cut off the power supply before installation and maintenance. • Drain Pump Assy, Elbow and Hose must be installed at safe area where it is far away from the user. • Drain Pump Assy must be installed at appointed location. • All wiring and connections are for installation only. 1 2 2) Quantity Quantity 1 1 1 2 10 1 1 Package contents Drain Pump Assy(AC220~240V, 50/60Hz, 400cm3/min) Elbow(ø32mm) Hose Tie Wrap Screw Rubber Installation manual 3) Service Parts List 16 No. Location No. P/No. Description 1 158590 5858A10001Z Pump Water 2 266012 6601A20001J Switch Assy, Float Indoor Unit Remark Installation 5) Attention 1. Possible drain-head height is up to 700mm. So, it must be installed below 700mm. 1/50~1/100 1/50~1/100 2. Keep the drain hose downward up to 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part. 1/50~1/100 Drain Pipe MAX 700mm Drain Pump 3. 5mm or thicker formed thermal insulator is provided for the drain pipe. Thermal insulator (Local supply) Drain pipe (Local supply) Unit Elbow Drain pump 4. Upward routing is not allowed. 5. Be sure to check the drain pump for normal operation and abnormal noise when electrical wiring is complete. Wall Drain hose Installation Manual 17 Installation Optional operation 1) Two Thermistor System Room Temp. sensor Slide switch for 2 Thermistor TH R13H OP2 R14H OP3 REMO MAIN 2TH REMO MAIN 2TH CO1H OP5R16H OP4 R15H OP1 R19H R11H SW TH Position 2 Position 1 Position 3 R12H OP7 R18H R17H OP6 LO C070 STAND R03S HI R04S SW R01S R02S (1) Open the rear cover of the wired remote-control to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. • Position 2: The room themperature is controlled by the thermistor of the wired remote-control, control the temperature according to the position of wired remote-control. • Position 3: The room temperature is controlled by lower temperature between the temperature of main body and of remote-control sensor. (3) Move the slide switch to set position. (4) Close the rear cover and check if it works normally. HIGH Slide switch for ceiling height CAUTION : • Select the position after counselling with a customer. In case of cooling mode, room temperature is controlled by the main body sensor. • To control the room temperature by a wired remote control, install the remote control (room temp. sensor) to sense the temperature more accurately. • Maunfactured in the position 3. 2) Adjusting air volume to the height of ceiling Indoor Unit Low ceiling Standard (Default) High Ceiling Lo R13H OP2 R14H OP3 SW TH STAND REMO MAIN 2TH Hi R12H CO1H OP1 R19H R11H OP7 R18H R17H OP6 LO STAND R03S HI Slide switch for ceiling height Change of air volume Increasing Decreasing Remark Maunfactured in standard mode SW HIGH R02S 18 Mode of slide switch High Ceiling Standard Low Ceiling TH R04S Ceiling height more than 4.0m 3.2~4.0m less than 3.2m Slide switch for 2 Thermistor C070 You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. 2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-control. 3. Move the slide switch to the set position. 4. Close the rear cover and check if it works nomally. R01S OP5R16H OP4 R15H P/No.: 3828A20326A Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.
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