Page 2 - SAFETY PRECAUTIONS; Warning
• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here are divided into " Warning" and " Caution" items. Items in particular which may cause death or serious injury to the service personnel if the ...
Page 4 - Table of Contents; REFRIGERANT FLOW DIAGRAM
Table of Contents 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL DATA 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram 5. PERFORMANCE DATA 5-1. Temperature Charts 5-2. Cooling Capacity 5-3....
Page 5 - Page
11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A11-2. Checklist before Servicing11-3. Tools Specifically for R410A11-4. Tubing Installation Procedures11-5. In Case of Compressor Malfunction11-6. In Case Refrigerant is Leaking11-7. Charging...
Page 6 - OPERATING RANGE; Model
95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 1 . OPERATING RANGE Maximum Minimum 115 °F DB 67 °F DB Temperature Indoor Air Intake Temp . Outdoor Air Intake Temp . Cooling 95 ° 67 °F DB / 57 °F WB Maximum Minimum 115 °F DB 0 °F DB Temperature Indoor Air Intake Temp . Outdoor Air Intake Temp . Cooling Mode...
Page 7 - Indoor Unit; Voltage Rat
2. SPECIFICATIONS 2-1. Un i t Spec i f i cat i ons Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKU < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are:Cooling: Indoor air temperature 80 °F DB / 67 °F WB Outdoor air temperature 95 °F DB / 75 °F WB Vertical dB-AdB-A Ind...
Page 13 - Dimen
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKUA < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE. Vertical dB-AdB-A Indoor : Hi/Me/Lo/Qt*Outdoor : Hi Air FilterCompressorRefrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 10.8 ( 1.3 to 10.8 ) 24,200 7.1 ( 4,000 to 24,200 )( 1.2 ...
Page 15 - Flap Motor; Major Component Specification
Indoor Unit CS-KS18NKU MP24Z3 Flap Motor Type Stepping Motor Rating Model Coil Resistance Ohm (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT TO...
Page 17 - Outdoor Unit; ss
Outdoor Unit CU-KS18NKU 2-2-2 . Outdoor Unit Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS18NKU DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.577.5 77.5 Micro F VAC External Fini s h Acrylic baked-on enamel finish FV50S...
Page 21 - Other Component Specification; Re
2-3 . Other Component Specification s Indoor Unit CS-KS18NKU CS-KS24NKU Outdoor Unit CU-KS18NKU CU-KS24NKU CU-KS18NKUA CU-KS24NKUA 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 1 0 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (...
Page 22 - DIMENSIONAL DATA
3 . DIMENSIONAL DATA Indoor Unit CS-KS18NKU CS-KS24NKU CS-KS18NKU CS-KS24NKU Unit: inch(mm) (852-0-0010-216-00-0) 22
Page 25 - REFRIGERANT FLOW DIAGRAM; gerant Flow D; Insulat; I M P O R T A N T; CAUTION
Compressor Accumulator Wide tubeservicevalve Wide tube Narrowtubeservicevalve Narrow tube Heat exchanger Heat exchanger Muffler Cooling cycle Indoor un i t Outdoor un i t Electric expansion valve M *1 *1 O.D.1/2"(12.7mm) ... O.D.5/8"(15.88mm) ... O.D.1/4"(6.35 mm) H.P. High pressure swit...
Page 26 - NOTE; (3) Indoor discharge air performance chart
5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKU • Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NOTE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) L...
Page 30 - ng Capac
Indoor Unit : CS-KS18NKU Outdoor Unit : CU-KS18NKU / CU-KS18NKUA Power Supply : 230V Single Phase 60Hz < Cooling Capacity > 5-2. Cool i ng Capac i ty TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Outdoor Ambient Temp. 95 °F (35 °C) DB 2. 3....
Page 34 - : Axis air velocity 0
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80°F (26.7°C) Fan speed : High Cooling : Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : Axis air velocity 30 5-4. Air Throw Distance Charts Indoor Unit CS-KS18NKU 0 5 10 15 0 5 10 15 20 25 30 34
Page 37 - Cooling
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKU Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.5 Power input W A W A W A W 55 10.3 2,405 Rating conditions: Cooling 10.8 2,460 Indoor Unit Outdoor Unit Fan Motor Fan Mot...
Page 38 - WARNING; CONTROLLER
8FA2-5251-11000-2 6-2. Electric Wiring Diagrams Indoor Unit CS-KS18NKU CS-KS24NKU WARNING To avoid electrical shock hazard, be sure todisconnect power before checking, servicingand/or cleaning any electrical parts. CONTROLLER IND LAMP ASSY 12 45 12 4 3 3 5 123 10 123 45 45 67 67 8 8 10 123 10 123 45...
Page 42 - MAINTENANCE; Addre; Fig; Test run mode
1HR.TIMERbutton ON/OFFoperationbutton ACL(Reset)button QUIETbutton 7 . MAINTENANCE 7-1 . Addre ss Setting of the Remote Control Unit The address can be set in order to prevent interference between remote controllers when two Sanyo indoor units are installed near each other. The address is normally s...
Page 43 - Di
One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Di s connect Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside. Always hold the cover to disc...
Page 45 - HIGH POWER operation from remote controller; COOL and DRY modes
HIGH POWER NIGHT SETBACK Lamp colors Timer backup This function acts to raise the power but keeps the AC system in the same operating mode.This function is set with the HIGH POWER button on the remote controller.(It can be set regardless of the temperature and fan speed settings.) HIGH POWER operati...
Page 47 - -1. Precautions before Performing Inspection or Repair; : The failure mode is stored in memory even when the power is not ON.; PROCEDURE; Step 1: Press and hold the remote controller QUIET button and 1 HR
1HR.TIMERbutton ON/OFFoperationbutton ACL(Reset)button QUIETbutton < Clock display > Test run mode Self-diagnostics mode 9. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) 9-1. Precautions before Performing Inspection or Repair NOTE After checking the self-diagnostics monitor, turn the power OFF ...
Page 50 - Checking the Indoor and Outdoor Unit; operation by 60 times faster than normal).; Control; The compressor and fan motor must all turn on.
9-3 . Checking the Indoor and Outdoor Unit s (1) Checking the indoor unit (2) Checking the outdoor unit U s ing the TEST/T-RUN terminal s Control No . Check item s (unit operation) T-RUN : Test run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates operation by 60 t...
Page 51 - (3) Serial Communication Error Identification Procedure; Lamp; < Check Items before Troubleshooting Serial Communication Start >
(3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. (3-1) Condition: E01 < Before the Operation > If the lamps on the main body show the following conditions after the completion of self-diagnostics, a commun...
Page 54 - Measurement location; DC 14 V or more; Normal value
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.) [Trouble symptom 4] Fan motor rotation speed does no...
Page 55 - DC 14V or more
9-4-2. Outdoor Fan Motor This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. Perform the trouble diagnosis by Test Run mode described on Installation Instructions. [Tr...
Page 56 - -5. Noise Malfunction and Electromagnetic Interference
9-5. Noise Malfunction and Electromagnetic Interference An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is install...
Page 57 - CHECKING ELECTRICAL COMPONENTS; Mea
Insulation tester Probe Clip Ground wire Terminal plate Coppertube ormetallic part Clip Insulation tester Probe Fig . 1 Fig . 2 Fig . 3 Fig . 4 Coppertube ormetallic part Clip Insulation tester Probe Clip Insulation tester Probe Metallic part From fan motor,compressor and other parts 10 . CHECKING E...
Page 58 - Checking Continuity of Fu; Remove the PCB Ass'y from the electrical
Fuse PCB Ass'y Fig . 5 Fig . 6 Fuse 10-2 . Checking Continuity of Fu s e on PCB A ss 'y Remove the PCB Ass'y from the electrical component box. Then pull out the fuse from the PCB Ass'y. (Fig. 5) Check for continuity using a multimeter as shown in Fig. 6. 58
Page 59 - SPECIAL PRECAUTIONS WHEN SERVICING UNIT; Characteri; What i; Less toxic, more chemically stable refrigerant
11 . REFRIGERANT R410A : SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1 . Characteri s tic s of New Refrigerant R410A 11-1-1 . What i s New Refrigerant R410A? R410A i s a new refrigerant that contain s two type s of p s eudo-non-azeotropic refrigerant mixture . It s refrigeration capacity and energy e...
Page 60 - No additional charge of compressor oil is permitted.; Checkli; Specification A
Tubing precaution s Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) ...
Page 62 - Procedure for Replacing Compre; Length of tubing
11-5 . In Ca s e of Compre ss or Malfunction CAUTION Should the compre ss or malfunction, be s ure to make the s witch to a replacement compre ss or a s quickly a s po ss ible . U s e only the tool s indicated exclu s ively for R410A . See "11-3 . Tool s Specifically for R410A . " 11-5-1 . P...
Page 63 - Single valve
Valve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with s iphon tube) Charge with cylinder in normal position. Liquid Valve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CAUTION Never charge a large amount of liquid refrigerant at once ...
Page 64 - In Ca
Length of tubing Evacuation time Le ss than 33 ft . (10 m) More than 10 minutes More than 33 ft . (10 m) More than 15 minutes 11-6 . In Ca s e Refrigerant i s Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant ha s been leaking from the unit . Follow the procedure de s c...
Page 65 - Charging Additional Refrigerant; with the indoor unit.; ting Sy; This will cause the air conditioner to
11-7 . Charging Additional Refrigerant 11-7-1 . When Tube s are Extended Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid s tate only . 11-8 . Retro-Fitting Exi s ting Sy s tem...
Page 67 - This air conditioner uses the refrigerant R410A.; Split System Air Conditioner; Indoor Units; Operating Instructions
This air conditioner uses the refrigerant R410A. Split System Air Conditioner Model No. Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181210001 Indoor Units CS-KS18NKUCS-KS24NKU Outdoor Units CU-KS18NKUCU-KS18NKUACU-KS24NKUCU-KS24NKUA Operating Instructions Before operating the u...
Page 68 - PRODUCT INFORMATION
2 FEATURES This air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functionsare provided below; refer to these descriptions when using the air conditioner. • Microprocessor Controlled Operation The interior compartment of the remote contro...
Page 69 - Wiring must be done by a qualified electrician.; SAFETY INSTRUCTIONS; Never touch the unit with wet hands.
3 INSTALLATION LOCATION • We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Installation Instructions provided with the unit. • Before installation, check that the voltage of the electric supply in your home or office is the sam...
Page 70 - the receiver is connected.; NOTICE
4 • To prevent possible hazards from insulation failure, the unit must be grounded. • Do not clean inside the indoor and outdoor units by users. Engage authorized dealer or specialist for cleaning. • In case of malfunction of this appliance, do not repair by yourself. Contact to the sales dealer or ...
Page 71 - NAMES OF PARTS; Moisture in the room condenses and drains off through this hose.
5 NAMES OF PARTS This illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote c...
Page 72 - UNIT DISPLAY AND OPERATION BUTTON; This lamp lights when the system is being controlled by the timer.; Cooling operation
6 UNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROL receiver This section picks up infrared signals from the remote controller (transmitter). OPERATION button When the remote controller cannot be used, pressing this button enables cooling operation. Each time this button is pressed, the operation mod...
Page 74 - REMOTE CONTROLLER; When you press the buttons on the remote controller, the
8 REMOTE CONTROLLER The illustration above pictures the remote controller after the cover has been opened. Transmitter When you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Sensor A temperature sen...
Page 76 - USING THE REMOTE CONTROLLER; This switches the temperature display between °C and °F.
10 REMOTE CONTROLLER (CONTINUED) USING THE REMOTE CONTROLLER Temperature Display Selector button This switches the temperature display between °C and °F. Time Display Selector button This switches the time display between 24-hour time and 12-hour time. ACL button (ALL CLEAR) Puts the remote controll...
Page 78 - OPERATION WITH THE REMOTE CONTROLLER
12 OPERATION WITH THE REMOTE CONTROLLER 1. Operation Check that the circuit breaker on the power panel is turned on. Press the setting buttons as described below and change the settings as desired. STEP 1 Press the MODE selector button and select the desired mode. For dehumidifying operation o For c...
Page 79 - OPERATION WITH THE REMOTE CONTROLLER (CONTINUED); Adjusting the Fan Speed; A. Automatic fan speed; Simply set the FAN SPEED selector button to the
13 OPERATION WITH THE REMOTE CONTROLLER (CONTINUED) • Choose the best position in the room for the remote controller, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote controller there. • This applian...
Page 80 - Night Setback Mode; Night Setback Mode is used for saving energy.; mark appears in the display.; and
14 OPERATION WITH THE REMOTE CONTROLLER (CONTINUED) 4. Night Setback Mode Night Setback Mode is used for saving energy. Press the NIGHT SETBACK button while unit is operating. (except FAN mode)The mark appears in the display. To release the night setback function, press the NIGHT SETBACK button agai...
Page 82 - SPECIAL REMARKS; Clicking sound is heard from; Power failure during
16 SPECIAL REMARKS How it works? • Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically. • During DRY operation, the fan speed automatically runs at lower speed for providing a comfortable breeze. • ‘‘DRY’’ operation is not possible if the...
Page 83 - SETTING THE TIMER; How to set the present
17 SETTING THE TIMER In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote controller.• Temperature: °F • Time: AM, PM 1. How to set the present time (Example) To set to 10:30 pm. 2. How to set the ...
Page 85 - The
19 USING THE 1-HOUR OFF TIMER TIPS FOR ENERGY SAVING 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting proce...
Page 86 - ADJUSTING THE AIRFLOW DIRECTION; The flap automatically closes when the unit is off.
20 ADJUSTING THE AIRFLOW DIRECTION 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vane...
Page 89 - WIRED REMOTE CONTROLLER; The air intake grille can be removed in order to wash it with water.
23 CARE AND CLEANING (CONTINUED) WIRED REMOTE CONTROLLER Cleaning the main unit and Remote Controller • Wipe clean using a soft, dry cloth. • To remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °F, wring thoroughly, and then wipe. • The air intake grille can be removed in order...
Page 90 - Trouble Possible
24 TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) If your air conditioner does not work properly, first check the following points before requesting service. If it still does notwork properly, contact your dealer or service center. OPERATING RANGE The air conditioner is operable within the temperature...
Page 91 - SPECIFICATIONS; mm
25 SPECIFICATIONS Model No. Heating Capacity OperationSound Unit Di m ensions (H×W×D) (Indoor unit : Include panel) Net Weight Power Source Cooling Capacity kW BTU/h kW BTU/h inch( mm ) lbs.(kg) Cooling Operation Outdoor (Hi) Indoor(H/M/L) Outdoor (Hi) Indoor(H/M/L) Heating Operation dB(A) dB(A) Mod...
Page 93 - Contents
This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264190576000 2011 INSTALLATION INSTRUCTIONS NOTE CV6233187204 Contents Page IMPORTANT!Please Read Before Starting .................................. 2 1. GENERAL ..........
Page 94 - SPECIAL PRECAUTIONS; accidental injury or
2 IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operatingstandards. As the installer or service person, it is an importantpart of your job to install or service the system so it operatessafely and efficiently. For safe installation and trouble-free opera...
Page 95 - fins of the outdoor unit. You may get injured.; N OT E
3 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ $SSO\UHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI the flare and union tubes before connecting them,then tighten the nut with a torque wrench for a leak-free connection. &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ 'RQRWOHDNUHIULJHUDQWZKLOHSLSLQJZRU...
Page 97 - -5. Additional Materials Required for Installation; Installation Site Selection; Table 3
5 1-5. Additional Materials Required for Installation 1. Refrigeration (armored) tape 2. Insulated staples or clamps for connecting wire(See local codes.) 3. Putty 4. Refrigeration lubricant 5. Clamps or saddles to secure refrigerant tubing 2. Installation Site Selection 2-1. Indoor Unit AVOID: dire...
Page 99 - Air discharge baffle; Front; Air intake baffle; Back
7 2-3. Baffle Plate for the Outdoor Unit (CU-KSxxNKUA models only) It is recommended to use baffle plates for models CU-KS18NKUA and CU-KS24NKUA. The baffle platesare not normally required for the other models. When the outdoor unit is installed in a position exposedto strong wind (such as seasonal ...
Page 100 - Air Intake Baffle
8 (1) Recommended dimensions of the baffle plates D F E C J H L I B K Q R A G O (3- 6.5 mm) 3- 1/4" (2- 6 mm) 2- 15/64" A B H C E F K I J G G D (4- 6.5 mm) 4- 1/4" For Air Intake For Air Discharge Material to be used: Metal plate with corrosion protection treatmentPlate thickness: 0.0394...
Page 102 - How to Install the Indoor Unit; -1. Remove the Rear Panel from the Unit; (1) Remove and discard the set screw on the rear
10 Set screw only for transportation Fig. 6 Rear panel marks Fig. 7 Lefttubing Right tubing Downward tubing Right-reartubing(recommended) Left-reartubing Fig. 8 3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear panel. (Fig. 6)...
Page 103 - (5) Measure the thickness of the wall from the inside; Rawl plug
11 Indoorside Outdoorside Hole should be made at a slight downward slant to theoutdoor side. N OT E Fig. 10 Plastic cover INSIDE OUTSIDE Wall Slightangle PVC pipe (Locally purchased) Fig. 12 PVC pipe (Locally purchased) Cut at slight angle Fig. 11 (4) Using a sabre saw, key hole saw or hole-cutting ...
Page 105 - General precautions on wiring
13 3-5. Shape the Indoor Side Tubing (1) Arrangement of tubing by direction a) Right or left tubing Cut out the corner of the right/left frame with ahacksaw or the like. (Figs. 20 and 21) b) Right-rear or left-rear tubing In this case, the corner of the frame need not becut. (2) To mount the indoor ...
Page 106 - -7. Recommended Wire Length and Diameter; Table 5
14 (A)+(B) (A) Power Supply Wiring Length (ft) (C) Control Fuse or Circuit AWG (B) Power Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CU-KS18NKU, CU-KS18NKUA 131 (Max.) 230 (Max.) 100 (Max.) 15A CU-KS24NKU 131 (Max.) 230 (Max.) 132 (Max.) 20A CU-KS24NKUA 131 (Max.) 230 ...
Page 108 - How to connect wiring to the terminal; pletely using a screwdriver.; For stranded wiring; on the terminal plate.
16 When connecting each power wire to the correspondingterminal, follow the instructions “How to connect wiringto the terminal” and fasten the wire securely tight withthe fixing screw of the terminal plate. How to connect wiring to the terminal a) For Indoor Unit (1) Cut the wire end with a cutting ...
Page 110 - Switching drain hose and drain cap; (b) Remove the screw fastening the drain hose on; Drain hose
18 Hole in wall Bent part Narrow tube Wide tube Rear panel Fig. 38 Drain cap Drain hose Fig. 39 Left-side tubing (1) Lead the tubing and drain hose through the wall, allowing sufficient length for connection. Then bendthe tubing using a tube bender to make the attach-ment. (Fig. 38) (2) Switch the d...
Page 111 - To unmount indoor unit; Press the 2; Risk of Electric Shock
19 To unmount indoor unit Press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit andunmount. (Fig. 42) 3-10. Drain Hose a) The drain hose should be slanted downward to theoutdoors. (Fig. 43) b) Never form a trap in the course of the hose. c) If the dra...
Page 112 - How to Install the Outdoor Unit; First refer to Section 2. Installation Site Selection.; -1. Wiring Instructions for the Outdoor Unit; ing to the drawing on the panel side.
20 4. How to Install the Outdoor Unit First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality. Forfield wiring requirements, please refer to your local elec-trical codes. Make sure that the install...
Page 113 - Refrigerant Tubing; -2. Flaring Procedure with a Flare Tool
21 5. Refrigerant Tubing 5-1. Use of the Flaring Method Many of the conventional split system air conditionersemploy the flaring method to connect refrigerant tubeswhich run between indoor and outdoor units. In thismethod, the copper tubes are flared at each end andconnected with flare nuts. 5-2. Fl...
Page 114 - To fasten the flare nuts, apply specified torque as:; Table 6; (2) Wrap the armoring tape from the bottom of the outdoor; Clamp
22 5-4. Connecting Tubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten-ded from the wall with the outdoor side tubing. (Fig. 52) b) To fasten the flare nuts, apply specified torque as: Table 6 5-5. Insulation of Refrigerant Tubing To prevent heat loss ...
Page 115 - Air Purging with a Vacuum Pump (for Test Run)
23 6. Air Purging Air and moisture remaining in the refrigerant systemhave undesirable effects as indicated below. Therefore,they must be purged completely. pressure in the system rises operating current rises cooling (or heating) efficiency drops moisture in the air may freeze and block capillary t...
Page 117 - How to Test Run the Air Conditioner; a) Press and hold the QUIET button and the 1HR.; I M P O R TA N T; OPERATION lamp
25 How to Test Run the Air Conditioner After turning on the power of the air conditioner, use theremote controller and follow the steps below to conduct thetest run. (1) Set the remote controller in Test Run mode. (Fig. 59a) a) Press and hold the QUIET button and the 1HR. TIMER button. b) Then press...
Page 118 - Pump Down; Pump Down Procedure; (1) Connect the Lo side charging hose of the manifold; Basic Functions of the Service Valves; Action; Wide Tube Service; Table 8
26 Pump Down Pump down means collecting all refrigerant gas in thesystem back into the outdoor unit without losing any ofthe gas. Pump down is used when the unit is to bemoved or before servicing the refrigerant circuit. Pump Down Procedure Be sure to carry out pump down with the unit incooling mode...
Page 119 - Remote Controller Installation Position; In direct sunlight; To take out the remote controller, pull it forward.; Table 9; Service Valve Connections
27 7. Remote Controller Installation Position The remote controller can be operated from either anon-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, donot install the remote controller in the following places: In direct sunlight Behind a curtain or o...
Page 120 - -1. Address Setting of the Remote Controller; (3) Press and hold the remote controller QUIET button
28 8. Address Switch 8-1. Address Setting of the Remote Controller The address can be set in order to prevent interferencebetween remote controllers when 2 indoor units areinstalled near each other. The address is normally set to“A.” To set a different address, it is necessary to changethe address o...
