LG CRNN Series Installation Manual Download Page 29

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Installation of Ceiling Cassette Type(1 way) Indoor Unit

Installation of Ceiling Cassette Type(1 way) Indoor Unit

Wall

5~7mm

Indoor

Outdoor

Set screw of
paper model (4 pieces)

Paper model
for installation

Ceiling board

90mm

Adjust the same height

Ceiling board

Ceiling

Flat washer for M10

(accessory)

Keep the length of the bolt

from the bracket to 40mm

Open the ceiling board
along the outer edge of the
paper model

Flat washer for M10

(accessory)

Hanging bolt

(W3/8 or M10)

Nut
(W3/8 or M10)

Nut

(W3/8 or M10)

Spring washer

(M10)

Air Conditioner body

3. The Indoor Unit Installation

• The following parts are local purchasing.

Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10

• Drill the piping hole on the wall slightly tilted to the

outdoor side using a Ø 70 hole-core drill.

• Tighten the nut and bolt to prevent unit from

falling off.

CAUTION

Summary of Contents for CRNN Series

Page 1: ...Multi V Air Conditioner INSTALLATION MANUAL INDOOR UNIT Model No CRNN_Series ...

Page 2: ...ng the unit it could cause an explosion Do not install the unit in a place where an inflamma ble gas leaks If there is a defect in the drainage piping work water could drop from the unit and household goods could be wet and damaged Perform the drainage piping work securely according to the installation manual When installed in an insufficient strong place the unit could fall causing injured Instal...

Page 3: ...n 29 Wiring connection 30 Installation of decorative panel 31 Indoor unit drain piping 32 Installation of Ceiling Cassette Type 4 way Indoor Unit 35 Selection of the best location 37 Ceiling opening dimensions and hanging bolt location 38 Wiring connection 40 Installation of decorative panel 41 Indoor unit drain piping 42 Installation of Convertible Type Indoor Unit 45 Selection of the best locati...

Page 4: ...InstallationofWallMountedTypeIndoorUnit 4 Installation of Wall Mounted Type Indoor Unit ...

Page 5: ...Holder Remote Control Installation of Wall Mounted Type Indoor Unit Cooling Heating Model has included Drain Elbow Required Parts Required Tools Installation plate Four type A screws Connecting cable Level gauge Screw driver Electric drill Hole core drill ø70mm Pipes Gas side Ø12 7 Ø9 53 Liquid side Ø6 35 Refer to page 4 Insulation materials Additional drain pipe Outer Diameter 15 5mm Flaring tool...

Page 6: ...ondensation will not damage furniture or floors Foamed polyethylene or equivalent is recommended 4 Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right Press th...

Page 7: ...protect it from the vibration 1 Mount the installation plate on the wall with four Type A screws If mounting the unit on the concrete wall consider using anchor bolts Always mount the Installation plate horizontally by aligning the marking off line by means of the thread and a level 2 Drill the piping hole with 70mm dia holecore drill Line according to the arrows marked on lower the left and the r...

Page 8: ...iping housing sec tion 1 Route the indoor tubing and the drain hose to the required piping hole position 2 Insert the piping drain hose and the connecting cable into the piping hole InstallationofWallMountedTypeIndoorUnit 8 Installation of Wall Mounted Type Indoor Unit GAS LIQUID Ø9 53 4 2kg m Ø6 35 1 8kg m Ø12 7 5 5kg m Ø6 35 1 8kg m Pipe Size Torque For right rear piping Torque wrench Indoor uni...

Page 9: ... the flare nut by hand Tighten the flare nut with a wrench When extending the drain hose at the indoor unit install the drain pipe 7 Wrap the insulation material around the connect ing portion Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material Bind them together with vinyl tape so that there is no gap Wrap the area which accommodates the rear pip ing hous...

Page 10: ...th the tubing holder Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis 10 Indoor unit installation Remove the spacer Ensure that the hooks are properly seated on the installation plate by moving it left and right Press the lower left and right sides of the unit against the installation plate until the hooks engage into thei...

Page 11: ... down to the position horizontally by hand Remove the securing screws that retain the front panel Pull the lower left and right sides of the grille toward you and lift it off 2 1 7 2 6 9 3 5 12 kW Btu models 2EA 3 5 18 kW Btu models 3EA 2 To check the drainage Pour a glass of water on the evaporator Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out t...

Page 12: ...he wires of outdoor unit and the terminal No are the same as those of indoor unit respectively 2 Attach the Grille onto the cabinet Grasp lower the left and right side of the Grille and engage four tabs on the top inside edge of the chassis Press the Grille toward the chassis until it will be back into place Terminal Block in Indoor 1 L 2 N 3 A 4 B Terminal 1 in Outdoor 1 R 2 S 3 T 4 N Terminal 2 ...

Page 13: ... cause burn out of the wires 3 Specification of power source 4 Confirm that electrical capacity is sufficient 5 See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness 7 Always install an ...

Page 14: ...InstallationofWallMountedTypeIndoorUnit 14 Memo ...

Page 15: ...InstallationofArtCoolTypeIndoorUnit 15 Installation of Art Cool Type Indoor Unit ...

Page 16: ... anchors 3 Type B screws 4 Holder Remote Control Cooling Heating Model has included Drain Elbow Required Parts Required Tools Installation plate Four type A screws Connecting cable Level gauge Screw driver Electric drill Hole core drill ø70mm Pipes Gas side Ø12 7 Ø9 53 Liquid side Ø6 35 Refer to page 4 Insulation materials Additional drain pipe Outer Diameter 15 5mm Flaring tool set Specified torq...

Page 17: ... that condensation drainage can be conveniently routed away Do not install near a doorway Ensure that the space around the left and right of the unit is more than 50cm The unit should be installed as high on the wall as possible allowing a minimum of 10cm from ceiling Use a stud finder to locate studs to prevent unnecessary damage to the wall More than 10cm Lower than 2 3m More than 50cm More than...

Page 18: ...on necting wire with product 2 Cover pipe and cover side remove Remove two screws for fixing cover pipe Pull up the cover side of desired connecting direc tion then cover side is separated In case connecting direction is left or right path through the hole of cover side When path through the hole take care of burr NOTE When connecting pipe path through rear wall don t remove the hole 3 Drain hose ...

Page 19: ...hole of product at the upper screws In this time Remove the map Falling attention 5 Check the fixed product with light power 6 Look at suited horizon by horizontal meter on the horizontal setting line and Fix lightly the map by adhesive tape 7 Drill the piercing part for connecting pipe as diameter 50mm In case of piercing rear surface Refer to No 5 on this page when making a hole in the wall 8 Fi...

Page 20: ...nt is recommended 3 Connecting the pipings to the indoor unit and drain hose to drain pipe Align the center of the pipes and sufficiently tighten the flare nut by hand Tighten the flare nut with a wrench When extending the drain hose at the indoor unit install the drain pipe 4 Wrap the insulation material around the connect ing portion Overlap the connection pipe insulation material and the indoor...

Page 21: ...lass of water on the evaporator Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit 2 Drain piping The drain hose should point downward for easy drain flow Do not make drain piping Vinyl tape narrow Connection pipe Connecting cable Vinyl tape wide Wrap with vinyl tape Indoor unit pipe Pipe Wrap with vinyl tape Drain hose Pipe Vinyl tape ...

Page 22: ... panel assembly 1 First Check the side cover assembly exactly Fix power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller and first fix the upper part of panel front then match the lower part of panel front 3 Drive two screws Panel Front Connector ...

Page 23: ...ircuit specifically for the air conditioner As for the method of wiring be guided by the circuit diagram posted on the inside of control cover 2 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 loos...

Page 24: ...InstallationofArtCoolTypeIndoorUnit 24 Memo ...

Page 25: ...InstallationofCeilingCassetteType 1way IndoorUnit 25 Installation of Ceiling Cassette Type 1 way Indoor Unit ...

Page 26: ...performed in accordance with the national wiring standards by authorized personnel only Anti bacteria filter Air Intake Air Outlet Cooling Heating Model has included Drain Elbow Required Parts Required Tools Connecting cable Pipes Gas side Liquid side Hanging Bolt W 3 8 or M10 length 650mm Insulated drain hose Additional Drain hose Inner Dia 32mm Level Screw driver Electric drill Hole core drill ø...

Page 27: ...n A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling or other obstacles The indoor unit must have the maintenance space Unit cm Ceiling Ceiling Board Ceiling Board 20 or more Above 250 330 ...

Page 28: ...s is generated 4 Avoid place where noxious gas is generated 5 Avoid places near high frequency generators 2 Ceiling opening dimensions and hanging bolt location Ceiling board Level gauge Ceiling 1 000 Ceiling opening 931 6 893 4 Hanging bolt 328 4 Hanging bolt 860 390 30 8 430 Ceiling opening Use the ventilation fan for smoke collecting hood with sufficient capacity Cooking table Air conditioner T...

Page 29: ...m the bracket to 40mm Open the ceiling board along the outer edge of the paper model Flat washer for M10 accessory Hanging bolt W3 8 or M10 Nut W3 8 or M10 Nut W3 8 or M10 Spring washer M10 Air Conditioner body 3 The Indoor Unit Installation The following parts are local purchasing Hanging Bolt W 3 8 or M10 Nut W 3 8 or M10 Spring Washer M10 Plate Washer M10 Drill the piping hole on the wall sligh...

Page 30: ...GN YL 20mm NORMAL CROSS SECTIONAL AREA 1 5mm2 NORMAL CROSS SECTIONAL AREA 2 5mm2 Power cord Remote control cord In Out connecting wire Control box cover If the supply cord is damaged it must be replaced by a special cord or assembly available from the manufacturer or its service agent Terminal Block in Indoor 1 L 2 N 3 A 4 B Terminal 1 in Outdoor 1 R 2 S 3 T 4 N Terminal 2 in Outdoor 1 A 2 B INDOO...

Page 31: ...tighten completely two temporarily fixed screws and other two screws Total 4 screws 5 Connect the louver motor connector and display connector and room temp thermistor connector 6 After tightening these screws install the air inlet grille including the air filter and push middle point of inlet grille 7 Assemble the cover display and the cover Piping side Decorative panel fixing screws Hexagon M6 s...

Page 32: ...m Drain test Install certainly the decorative panel Cool air leakage causes sweating Water drops fall 6 Indoor Unit Drain Piping Drain piping must have down slope 1 50 to 1 100 be sure not to provide up and down slope to prevent reversal flow During drain piping connection be careful not to exert extra force on the drain port on the indoor unit The outside diameter of the drain connection on the i...

Page 33: ... 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 th...

Page 34: ...InstallationofCeilingCassetteType 1way IndoorUnit 34 Memo ...

Page 35: ...InstallationofCeilingCassetteType 4way IndoorUnit 35 Installation of Ceiling Cassette Type 4 way Indoor Unit ...

Page 36: ...performed in accordance with the national wiring standards by authorized personnel only Anti bacteria filter Air Intake Air Outlet Cooling Heating Model has included Drain Elbow Required Parts Required Tools Connecting cable Pipes Gas side Liquid side Hanging Bolt W 3 8 or M10 length 650mm Insulated drain hose Additional Drain hose Inner Dia 32mm Level Screw driver Electric drill Hole core drill ø...

Page 37: ...n A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling or other obstacles The indoor unit must have the maintenance space Unit cm Ceiling Ceiling Board Ceiling Board 30 or more Above 250 400 ...

Page 38: ...he unit horizontally using a level gauge During the installation care should be taken not to damage electric wires CAUTION Select and mark the position for fixing bolts and piping hole Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose Drill the hole for anchor bolt on the wall NOTE Avoid the following installation location 1 S...

Page 39: ...board along the outer edge of the paper model Flat washer for M10 accessory Hanging bolt W3 8 or M10 Nut W3 8 or M10 Nut W3 8 or M10 Spring washer M10 Air Conditioner body 2 Avoid installng air conditioner in such places where cooking oil or iron powder is generated 3 Avoid places where inflammable gas is generated 4 Avoid place where noxious gas is generated 5 Avoid places near high frequency gen...

Page 40: ...HAR or SAA CAUTION 8 5mm 20mm GN YL 7 5mm 20mm GN YL Air inlet side view If the supply cord is damaged it must be replaced by a special cord or assembly available from the manufacturer or its service agent NORMAL CROSS SECTIONAL AREA 1 5mm2 Control box cover Indoor power cord Remote controller cord Control box cover fitting screw 2 units NORMAL CROSS SECTIONAL AREA 4 0mm2 10 6kW 6 0mm2 14 1kW 8 0m...

Page 41: ...so that the screws reach the key hole edge 4 Retighten completely two temporarily fixed screws and other two screws Total 4 screws 5 Connect the louver motor connector and display connector 6 After tightening these screws install the air inlet grille including the air filter Decorative panel fixing screws hexagon M5 screws Temporally fitting at 2 places Tightening about 10mm Control box cover Pipi...

Page 42: ...or and leave it provisionally until the test comes to an end Feed water to the flexible drain hose and check the piping for leakage Be sure to check the drain pump for normal operating and noise when electrical wiring is complete When the test is complete connect the flexible drain hose to the drain port on the indoor unit 5 Indoor Unit Drain Piping Drain piping must have down slope 1 50 to 1 100 ...

Page 43: ... 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 th...

Page 44: ...InstallationofCeilingCassetteType 4way IndoorUnit 44 Memo ...

Page 45: ...InstallationofConvertibleTypeIndoorUnit 45 Installation of Convertible Type Indoor Unit ...

Page 46: ...drill ø70mm Pipes Gas side Ø12 7 Ø15 87 Liquid side Ø6 35 Ø9 53 Insulated drain hose Insulation materials Flaring Tools set Specified Torque Wrenches 1 8kg m Liquid side piping 5 5kg m Gas side piping Spanner Half union Specified Torque Wrenches 1 8kg m Liquid side piping 5 5kg m Gas side piping Hexagonal Wrench 4mm Gas leak Detector Two type B screws Owner s Manual Thermometer Installation Plate ...

Page 47: ...he air circulation A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling or other obstacles More than 20cm More than eye level More than 20cm R R More than 20cm More than 20cm Ceiling installa...

Page 48: ...he Hanger screw on the both left and right side Detach the Inlet Grille from the Indoor Unit 1 Installation on the ceiling Measure and mark the position for the Suspension bolts and the piping hole Drill the hole for anchor nut on the ceiling Before secure the Installation Plates select the bent direction of the Installion Plate to the inside or the outside according to the installation circumstan...

Page 49: ...ring washers Engage 2 hooks on the both left and right side of the unit to the lower slot of Installation Plates Adjust a level with a level gauge on the direction of left right back forth by adjusting suspension bolts Move the hooks on the unit to the upper slot of Installation Plates Then the unit will be declined to the bottomside so as to drain well Washer Nut Suspension bolts Ceiling Anchor n...

Page 50: ... drain of the convertible type air conditioner 2 Minimum thickness of the insulation for the connecting pipe shall be 7mm 3 If the Installation Plates are fixed to horizontal line the indoor unit after installing will be declined to the bottomside The unit must be horizontal or declined to the drain hose connected when finished installation The unit must be declined to the bottomside of the unit w...

Page 51: ... pipe and cable to Indoor Unit R Inlet hanger Hook Cabinet Bottom Secure the unit to the Installation Plates with four M8 bolts and washers Hook up the Inlet Grille Hook to the cabinet Hang the Inlet Hanger to the screw Fit the projection hooks of the side plates to the Side Panel and the Front Panel by lifting it Fasten the screws ...

Page 52: ...e Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose Drill the hole for anchor nut on the wall Drill the piping hole on the wall slightly tilted to the out door side using a ø70 hole core drill Secure the Install Plate onto the wall with four anchor bolts washers and spring washers Before secure the Install Plates select the be...

Page 53: ...the inner slot wall side of the Installation Plate Secure the unit to the Installation Plate with four M8 bolts and washers Hook up the Inlet Grille Hook to the cabinet Hang the Inlet Hanger to the screw Fit the projection hooks of the side plates to the Side Panel and the Front Panel by lifting it Fasten the screws R 2 1 Before working refer to Connecting pipe and cable to Indoor Unit Inner slot ...

Page 54: ...l the indoor unit onto the Mount Brackets Engage the slot at the back of the unit with Mount Bracket Drill the piping hole with 70mm dia hole core drill Piping hole should be slightly slant to the outdoor side After Installing reassemble detached parts Hang the Inlet Grille and hook the Inlet Hanger to the Hanger Screw Assemble the Side Plates R L with 2 screws on both left and right side Floor mo...

Page 55: ...er and fix it to the hole of the hose bracket with a screw 2 For the Bottom Side Piping Remove the knock out on the bottomside of Inlet Grille Align the center of the pipings and sufficiently tighten the flare nut with fingers Finally tighten the flare nut with torque wrench until the wrench clicks Connect the Drain Hose insulated to the drain outlet Hang the drain hose on the hose hanger and fix ...

Page 56: ...iping After bending an end of the connecting tube align the center of the pipings and sufficiently tighten the flare nut with fingers Finally tighten the flare nut with torque wrench until the wrench clicks Connect the Drain Hose insulated to the drain outlet Tape the Drain Hose to the pipings to avoid coming off the drain outlet 3 For the Right Bottom Piping Align the center of the pipings and su...

Page 57: ...e Indoor Unit 3 3 Checking the Drainage 1 Remove the Air Filter To remove air filter take hold of tab and pull slightly upwards 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 R R ...

Page 58: ...nect the wires to the terminals on the con trol 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 R AIR GUIDE L INDOOR UNIT Control Panel 1 2 Clamp Terminal Block in Indoor 1 L 2 N 3 A 4 B Terminal 1 in Outdoor 1 R 2 S 3 T 4 N Terminal 2 in Outdoor 1 A 2 B INDOOR POWER...

Page 59: ...s 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 wh...

Page 60: ...InstallationofConvertibleTypeIndoorUnit 60 Memo ...

Page 61: ...InstallationofCeilingConcealedDuctTypeIndoorUnit 61 Installation of Ceiling Concealed Duct Type Indoor Unit ...

Page 62: ...must be performed in accordance with the national wiring standards by authorized personnel only Air filters Remote Controller Air intake vents Air outlet vents Required Parts Required Tools Four Type A screws Connecting cable Level Screw driver Electric drill Hole core drill ø70mm Pipes Gas side Ø12 7 Ø15 87 Ø19 05 Liquid side Ø6 35 Ø9 53 Ø12 7 Insulated drain hose Insulation materials Additional ...

Page 63: ...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 he...

Page 64: ...575 30 87 750 186 7 0 24 942 880 466 54 575 30 87 750 186 10 6 36 1242 1180 492 54 600 30 87 830 186 Dimension Capacity kW kBtu NOTE 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...

Page 65: ...iling Insert the set anchor and washer onto the suspen sion bolts for locking the suspension bolts on the ceil ing 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 Tighten the nut and bolt to prevent unit falling CAUTION 1 Set anchor Old building New building 2 Plate washer 3 Spri...

Page 66: ...e length of power supply cord measured from the entry of the power supply cord to the mid dle of live pin on the power plug should be over 1 8m The power cord connected to the outdoor unit should be complied with the following specifications Rubber insulation type H05RN F approved by HAR or SAA If the supply cord is damaged it must be replaced by a special cord or assembly availible from the manuf...

Page 67: ...ate and tape both the gas piping and liquid piping THERMAL INSULATION 5 7mm Indoor Outdoor WALL Make sure that there is no clearance here Overlap with thermal insulator for piping Thermal insulator for refrigerant pipe Local supply Thermal insulator for piping Local supply Hose crip for thermal insulator Local supply Union for liquid pipe Refrigerant pipe and thermal insulator Local supply Union f...

Page 68: ...ion of Ceiling Concealed Duct Type Indoor Unit 5 Checking the Drainage 1 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 ...

Page 69: ...n out Front of view Alway lay the drain with downward inclination 1 50 to 1 100 Prevent any upward flow or reverse flow in any part 5mm or thicker formed thermal insulator shall always be provided for the drain pipe Install the P Trap or U Trap to prevent a water leakage caused by the blocking of intake air filter Applied U Trap Dimension 1 Install declination of the indoor unit is very important ...

Page 70: ...InstallationofCeilingConcealedDuctTypeIndoorUnit 70 Memo ...

Page 71: ...CommonInstallationProcess 71 Common Installation Process ...

Page 72: ...h the room themperature sensor is in the indoor unit the remote controller should be installed in such places away from direct sunlight and high humidity Installation of the remote controller 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 controller equipped with liquid cry...

Page 73: ...rrect Be sure that both batteries are new Re attach the cover Slide it back into position REMOTE CONTROL PREPARATION OPTIONAL HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Do not use rechargeable batteries such batteries differ from standard dry cells in shape dimensions and performance Romove the batteries from the remote controller if the air condi tioner is not going to be used for some long...

Page 74: ...ng flaring tool as shown below Firmly hold copper tube in a bar or die as indicated dimension in the table above 5 Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Outside Diameter A Gas Liquid Gas Liquid...

Page 75: ...s gas leakage in indoor and outdoor connection After completing the piping connection execute vacuum drying for the connecting piping and the indoor unit The vacuum drying must be carried out using the ser vice ports of both the liquid and gas side valves Use two wrenches and tighten with regular torque Outdoor unit Liquid side Flare connection Flare connection Gas side Indoor unit Union Flare nut...

Page 76: ...mosphere dew point tem perature more than 23 C water drops are liable to fall In this case add heat insulation material accord ing to the following procedure Heat insulation material to be prepared Adiabatic glass wool with thickness 10 to 20mm Stick glass wool on all air conditioners that are located in ceiling atmosphere In addition to the normal heat insulation thickness more than 8mm for refri...

Page 77: ...p shown in the drawing below b Provide one trap per unit A single trap for converging units will prove ineffective c Rig the trap to allow for future changing 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 c The length of pipe laid horizontally ...

Page 78: ...st 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 ...

Page 79: ...it is far away from the user Drain Pump Assy must be installed at appointed location All wiring and connections are for installation only 2 1 2 Quantity Quantity Package contents 1 Drain Pump Assy AC220 240V 50 60Hz 400cm3 min 1 Elbow ø32mm 1 Hose 2 Tie Wrap 10 Screw 1 Rubber 1 Installation manual 3 Service Parts List No Location No P No Description Remark 1 158590 5858A10001L Pump Water 2 266012 ...

Page 80: ...he top cover 3 Assemble the drain pump assy Drive 4 screws to the Channel Drive 2 screws to the Side Panel 4 Attach the elbow to the side panel 5 Connect the hose and tie wrap 7 Assemble the top cover 6 Connect two lead wires to control box One is float switch the other is for power supply to drain pump ...

Page 81: ...flow or reverse flow in any part 3 5mm or thicker formed thermal insulator is provid ed for the drain pipe 4 Upward routing is not allowed 5 Be sure to check the drain pump for normal opera tion and abnormal noise when electrical wiring is complete MAX 700mm Drain Pipe Drain Pump 1 50 1 100 1 50 1 100 1 50 1 100 Elbow Drain pump Unit Drain pipe Local supply Thermal insulator Local supply 1 50 1 10...

Page 82: ...on cooling mode After compressor operating it starts and compressor off it stops 6 minutes later 8 Troubleshowting PROBLEM CAUSE REMEDY Check electrical connection and voltage of the power supply Check float switch Check pump connection for water contamination Check the assembly state of drain pump to the unit No power supply Float switch doesn t operate Pumping air Vibrating against surfaces Pump...

Page 83: ...en the temperature of main body and of remote controller sensor 3 Move the slide switch to set position 4 Close the rear cover and check if it works normally 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 controller install controller room temp sensor to sense the...

Page 84: ... rear cover of the wired remote controller 3 Move the slide switch to the set position 4 Close the rear cover and check if it works nomally TH R14H SW TH REMO MAIN 2TH OP7 R18H R17H OP6 LO STAND SW HIGH HI R03S C070 R04S R02S R01S OP3 OP2 OP1 R19H R11H R13H R12H OP5R16H OP4 R15H CO1H Lo Hi STAND Slide switch for ceiling height Slide switch for 2Thermistor Standard Default Low ceiling High Ceiling ...

Page 85: ...RATION FAN SPEED Program set SUB FUNCTION SET TEMP Room Temp HI MED LO Heater Defrost Filter Preheat Out door Time Timer On Set no Time Off 01 03 05 07 09 11 13 15 17 19 21 23 Indoor Unit 1 Terminal Local Supply Block Terminal Local Supply Block Terminal Local Supply Block Main PCB 1 Main PCB 2 Main PCB 16 Wired Remote Controller Slide Switch OP7 Remote Controller PCB Indoor Unit 2 Main PCB Indoor...

Page 86: ...P No 3828A20280A October 2002 Printed in Korea ...

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LG CRNN Series, Installation Manual

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