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Panasonic CS-KS30NKU Technical & Service Manual

Summary of CS-KS30NKU

  • Page 1

    Air conditioner important these air conditioners employ new refrigerant r410a. Pay special attention when servicing the unit. Technical & service manual cs-ks30nku + cu-ks30nkua cs-ks36nku + cu-ks36nkua dc inverter split system air conditioner outdoor model no. Cu-ks30nkua cu-ks36nkua product code n...

  • Page 2: Safety Precautions

    • 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 work is not performed co...

  • Page 3

    Warning if refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite. If refrigerant gas leaks during the work, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated. Do not mix any gas other than the specified refrigerant gas i...

  • Page 4: Table of Contents

    Table of contents safety precautions 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. Temperat...

  • Page 5

    9. Checking electrical components 9-1. Measurement of insulation resistance 9-2. Checking continuity of fuse on pcb ass'y 10. Refrigerant r410a: special precautions when servicing unit 10-1. Characteristics of new refrigerant r410a 10-2. Checklist before servicing 10-3. Tools specifically for r410a ...

  • Page 6: 1.  Operating Range

    95 °f db / 71 °f wb 67 °f db / 57 °f wb 1. Operating range maximum minimum 115 °f db 0 °f db temperature indoor air intake temp. Outdoor air intake temp. Cooling 6.

  • Page 7: 2.  Specifications

    2. Specifications 2-1. Unit specifications indoor unit cs-ks30nku outdoor unit cu-ks30nkua 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-a db-a indoor : hi/me/lo/qt* o...

  • Page 8

    Indoor unit cs-ks30nku outdoor unit cu-ks30nkua data subject to change without notice. Vertical db-a db-a indoor : hi/me/lo/qt* outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control shipping volume net shipping package dimensions weight height s widt...

  • Page 9

    Indoor unit cs-ks36nku outdoor unit cu-ks36nkua data subject to change without notice. Vertical db-a db-a indoor : hi/me/lo/qt* outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control shipping volume net shipping package dimensions weight height s widt...

  • Page 10

    Indoor unit cs-ks36nku outdoor unit cu-ks36nkua data subject to change without notice. Vertical db-a db-a indoor : hi/me/lo/qt* outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control shipping volume cooling net shipping package dimensions weight heigh...

  • Page 11

    Indoor unit cs-ks30nku 24byj48-1256 flap motor type stepping motor rating model coil resistance ohm (ambient temp. 77 °f (25 °c)) each pair of terminal : 200 +/- 7% dc 12v aluminum plate fin / copper tube 1 and 2 19.5 4.55 (0.423) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) dat...

  • Page 12

    Indoor unit cs-ks36nku flap motor type rating model coil resistance ohm (ambient temp. 77 °f (25 °c)) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) data subject to change without notice. Control pcb control circuit fuse controls part no. Microprocessor 250v 3a cb-cs-ks36nku fan q...

  • Page 13

    Outdoor unit cu-ks30nkua 2-2-2. Outdoor unit p.C.Board circuit fuse controls part no. - 250v 25a pow-ch3082-b2 noise filer p.C.B microprocessor 400v 3.15a cr-c3082-f control p.C.B - - hic-ch3072r-c1 h.I.C.Board data subject to change without notice. Pints (cc) - micro f vac external finish acrylic b...

  • Page 14

    Outdoor unit cu-ks36nkua p.C.Board circuit fuse controls part no. - 250v 25a pow-ch3082-b2 noise filer p.C.B microprocessor 400v 3.15a cr-c3682-f control p.C.B - - hic-ch3072r-c1 h.I.C.Board data subject to change without notice. Pints (cc) - micro f vac external finish acrylic baked-on enamel finis...

  • Page 15

    2-3. Other component specifications indoor unit cs-ks30nku cs-ks36nku outdoor unit cu-ks30nkua cu-ks36nkua 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 (10) (15) (20) (25) (30) ...

  • Page 16: 3.  Dimensional Data

    3. Dimensional data indoor unit cs-ks30nku cs-ks36nku unit: inch(mm) (852-0-0010-196-00-0) 41-15/16 (1065) 9-1/16 (230) (3/32) 7-25/32 wide tube dia. 5/8" (15.88) narro w tube dia. 3/8" (9.52) 1-27/32 1-3/32 2-3/32 25/32 5-1/2 6-7/32 16-11/32 17-5/16 19-9/16 16-11/32 17-21/32 22-3/8 5-3/16 3-3/4 3-3...

  • Page 17

    Outdoor unit cu-ks30nkua cu-ks36nkua unit: inch(mm) (852-0-0010-194-00-1) 4-11/32 2-25/32 1-15/16 6-23/32 19/32 31/32 4-3/4 1-3/16 7/16 2-5/32 21/32 1-27/32 1-3/16 2-3/8 3/4 3-3/8 2-17/32 wir ing outlet (knoc k-out holes dia.1-3/8, 1-3/32, 7/8, 1/2) 6-11/6 25-31/32 4-11/32 2-15/16 2-3/8 2-id:1-1/4 h...

  • Page 18

    Wide tube service valve wide tube narrow tube service valve narrow tube heat e xchanger heat e xchanger cooling cycle indoor unit outdoor unit electric expansion valve strainer m o.D 5/8" (15.88 mm) o.D. 3/8" (9.52 mm) 4. Refrigerant flow diagram 4-1. Refrigerant flow diagram indoor unit cs-ks30nku ...

  • Page 19: 5.  Performance Data

    5. Performance data 5-1. Temperature charts indoor unit cs-ks30nku outdoor unit cu-ks30nkua • 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) ...

  • Page 20

    Indoor unit cs-ks36nku outdoor unit cu-ks36nkua cooling characteristics (rh : 46%, indoor fan speed : high fan) (60hz, 230v) • check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. Note (1) low pressure performance chart (2) operating...

  • Page 21

    1. Rating conditions (#) : indoor unit entering air temp. 80 °f (26.7 °c) db / 67 °f (19.4 °c) wb : outdoor ambient temp. 95 °f (35 °c) db 2. 3. Above data represents the value when the operation frequency of a compressor is fixed. Above data does not take freeze prevention protection during cooling...

  • Page 22

    Outdoor unit : cu-ks36nkua indoor unit : cs-ks36nku power supply : 230v single phase 60hz rating capacity: 34,000 btu/h air flow rate: 630 cfm indoor outdoor ent. Temp. O f ( o c) ambient temp. O f ( o c) wb db 65 75 85 95 105 115 (18.3) (23.9) (29.4) (35.0) (40.6) (46.1) tc 27,450 28,140 28,840 29,...

  • Page 23

    Outdoor unit : cu-ks30nkua indoor unit : cs-ks30nku power supply : 230v single phase 60hz rating capacity: 30,600 btu/h air flow rate: 630 cfm indoor outdoor ent. Temp. O f ( o c) ambient temp. O f ( o c) wb db 0 5 15 25 35 45 55 (-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8) tc 30,120 30,060 29,9...

  • Page 24

    Outdoor unit : cu-ks36nkua indoor unit : cs-ks36nku power supply : 230v single phase 60hz -1 rating capacity: 34,000 btu/h air flow rate: 630 cfm indoor outdoor ent. Temp. O f ( o c) ambient temp. O f ( o c) wb db 0 5 15 25 35 45 55 (-17.8) (-15.0) (-9.4) (-3.9) (1.7) (7.2) (12.8) tc 30,900 30,870 3...

  • Page 25

    Horizontal distance (ft.) axis air velocity (ft./sec.) v e rtical 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-ks30nku 0 5 10 15 0 5 10 15 20 25 30 ...

  • Page 26

    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 indoor unit cs-ks36nku 0 5 10 15 0 5 10 15 20 25 30 26.

  • Page 27: 6.  Electrical Data

    6. Electrical data 6-1. Electrical characteristics indoor unit cs-ks30nku outdoor unit cu-ks30nkua indoor unitoutdoor unit fan motor fan motor + compressor performance at 230v single-phase 60hz rating conditions running amp. A 0.4 power input w a w 39 16.1 3,251 rating conditions: indoor air tempera...

  • Page 28

    Indoor unit cs-ks36nku outdoor unit cu-ks36nkua indoor unitoutdoor unit fan motor fan motor + compressor performance at 230v single-phase 60hz rating conditions running amp. A 0.4 power input w a w 39 19.6 3,961 rating conditions: indoor air temperature: 80 °f (26.7 °c) db / 67 °f (19.4 °c) wb outdo...

  • Page 29

    Controller ind lamp assy 1 2 4 5 1 2 4 3 3 5 1 2 3 9 1 2 3 4 5 4 5 6 7 6 7 8 8 9 1 2 3 9 1 2 3 4 5 4 5 6 7 6 7 8 8 9 lamp 9p (wht) 1 2 1 2 coil 2p (wht) room/uv 4p (wht) s-link (rac) 4p (blu) flap 5p (wht) gnd 2p (wht) 1 2 3 4 1 2 3 4 1 2 3 4 wht blk blk blk blk blk blk blk blk flap motor evaporator...

  • Page 30

    Outdoor unit cu-ks30nkua cu-ks36nkua 8fa2-5251-15300-0 contr ol p .C .Bo ard noise fil ter p .C . Bo ard hic bo ard + + hic - w t s r v u + - + hic + + l1 + l2 + dc - th01 (yel) th1 + + m 3 compressor motor blu wht red 1 2 3 10 1 2 3 4 5 4 5 6 7 6 7 8 9 8 9 10 1 2 1 2 3 10 1 2 3 4 5 4 5 6 7 6 7 8 9 ...

  • Page 31: 7.  Functions

    Emergency operation emergency operation is available when the remote controller malfunctions, has been lost, or otherwise cannot be used. • the set temperature is 4°f(2°c) below the detected room temperature in the case of cooling operation. (green) (lamp off) cool stop to operate the system, press ...

  • Page 32

    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 opera...

  • Page 33

    The noise reducing control is the function used for silent operation of the air conditioner by means of setting the dip switch on the outdoor unit p.C.Board to control the fan and compressor's motor speed. (1) remove the 3 screws fixing the inspection panel and remove the inspection panel. (fig. 2) ...

  • Page 34

    The maximum current value is changed to 14a (for cu-ks30nkua) or 17a (for cu-ks36nkua) to prevent power breaker tripping. (it is set to 24a when the unit is delivered from the factory.) (1) remove the inspection panel. Refer to fig. 2 in " noise reducing control" for details. (2) when the switch no....

  • Page 35

    Compressor discharge temperature control freeze prevention during cool or dry operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below. 1. Freeze-prevention operation is engaged when the temperature of the indoor heat exc...

  • Page 36

    8. Troubleshooting (before calling for service) 8-1. Precautions before performing inspection or repair note after checking the self-diagnostics monitor, turn the power off before starting inspection or repair. High-capacity electrolytic capacitors are used inside the outdoor unit controller (invert...

  • Page 37

    Since the indications cover various units, the corresponding parts listed below may not be present in some models. (1) operation lamp (2) timer lamp (3) operation timer on/off indoor unit (1) self-diagnostics lamps indication on indoor unit .... Off diagnosis contents possible malfunction room temp....

  • Page 38

    (2) if the self-diagnostics function fails to operate check the indoor unit. Is the fuse blown? Replace the controller. Replace the circuit board or the fuse. No indicators illuminate and the indoor fan does not rotate. Check the power voltage. Normal blown 38.

  • Page 39

    8-3. Checking the indoor and outdoor units (1) checking the indoor unit (2) checking the outdoor unit using the test/t-run terminals control no. Check items (unit operation) t-run : test run (compressor and fan motor turn on). Test/mv : compresses time to 1/60th (accelerates operation by 60 times fa...

  • Page 40

    (3) serial communication error identification procedure refer to "method of self-diagnostics" for the self-diagnostics procedure. (3-1) alarm code : e05 if the lamps on the main body show the following conditions after the completion of self-diagnostics, a communication error between the indoor unit...

  • Page 41

    What is the latest self-diagnosis result ? Alarm code : e07/p04/p05/ p20/p27 alarm code : e07/p04/p05/ p20/p27 defect in the outdoor unit p.C. Board. Alarm code : e05 defect or connection error in the inter-unit cable defect in the indoor unit p.C. Board ( continued from the previous page a. ) a ( c...

  • Page 42

    (3-2) alarm code : e07/p04/p05/p20/p27 troubleshooting serial communication 1. Turn off the power and wait until the power lamp (led) of the outdoor unit controller is turned off. 2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (fig. 7) defect in the indoor unit p.C. B...

  • Page 43

    [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 44

    8-4-2. 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 of i...

  • Page 45

    8-5. 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 46

    Insulation tester probe clip ground wire terminal plate copper tube or metallic part clip insulation tester probe fig. 1 fig. 2 fig. 3 fig. 4 copper tube or metallic part clip insulation tester probe clip insulation tester probe metallic part from fan motor, compressor and other parts 9. Checking el...

  • Page 47

    Fuse pcb ass'y fig. 5 fig. 6 fuse 9-2. Checking continuity of fuse on pcb ass'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. 47.

  • Page 48: 10.  Refrigerant R410A:

    10. Refrigerant r410a: special precautions when servicing unit 10-1. Characteristics of new refrigerant r410a 10-1-1. What is new refrigerant r410a? R410a is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are a...

  • Page 49

    Tubing precautions 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) in thickn...

  • Page 50

    10-3. Tools specifically for r410a for servicing, use the following tools for r410a gauge manifold charging hose gas leak detector refrigerant cylinder charging cylinder refrigerant recovery unit vacuum pump with anti-reverse flow (*1) (solenoid valve-installed type, which prevents oil from flowing ...

  • Page 51

    10-5. In case of compressor malfunction caution should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible. Use only the tools indicated exclusively for r410a. See "10-3. Tools specifically for r410a." 10-5-1. Procedure for replacing compressor (...

  • Page 52: No!

    Valve single valve charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon 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 t...

  • Page 53

    Length of tubing evacuation time less than 33 ft. (10 m) more than 10 minutes more than 33 ft. (10 m) more than 15 minutes 10-6. In case refrigerant is leaking caution never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below...

  • Page 54

    10-7. Charging additional refrigerant 10-7-1. When tubes 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 state only. 10-8. Retro-fitting existing systems 10-8-1. ...

  • Page 56: Operating Instructions

    Operating instructions cs-ks30nku + cu-ks30nkua cs-ks36nku + cu-ks36nkua (852-6-4181-220-00-2) appendix a a-1.

  • Page 57: Split System Air Conditioner

    This air conditioner uses the refrigerant r410a. Split system air conditioner model no. Panasonic corporation 1006 kadoma, kadoma city, osaka, japan 85264181220002 indoor units cs-ks30nku cs-ks36nku outdoor units cu-ks30nkua cu-ks36nkua operating instructions before operating the unit, read these op...

  • Page 58

    2 features this air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner. • microprocessor controlled operation the interior compartment of the remote contr...

  • Page 59

    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 60

    4 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 ...

  • Page 61

    5 remote controller (display) (1) operation mode mild dry .............................. Cool ..................................... Fan ........................................ (2) fan speed automatic operation ............... High ..................................... Medium...........................

  • Page 62

    6 remote controller 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. Display information on the operating conditions is displayed while the remote controller is switched on. If the...

  • Page 63

    7 sensor a temperature sensor inside the remote controller senses the room temperature. (cover closed) clock button acl button (all clear) puts the remote controller into pre-operation status. Always press this button after replacing the batteries. On/off operation button this button is for turning ...

  • Page 64

    8 using the remote controller how to install batteries 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two aaa alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment. 3. Use a thin object such as the tip of a pen to p...

  • Page 65

    9 operation with the remote controller 1. Operation 2. Adjusting the fan speed a. Automatic fan speed simply set the fan speed selector button to the position. This automatically sets the best fan speed for the room temperature. B. Manual fan speed if you want to adjust fan speed manually during ope...

  • Page 66

    10 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 again. Pressing the mode selector button cancels nig...

  • Page 67

    11 7. Unoccupied mode unoccupied mode is used to prevent the room temperature from increasing too much when no one is in the room, and operate automatically to save energy. Press the unoccupied button. The mark appears in the display. To release the unoccupied function, press the unoccupied button a...

  • Page 68

    12 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 69

    13 2. How to set the off time (example) to stop the air conditioner at 11:00 am. 3. How to set the on time (example) to start operation at 7:10 am. 4. How to set daily on/off repeat timer (example) to start operation at 7:10 am. And stop the air conditioner at 11:00 am. • the on/off combination time...

  • Page 70

    14 using the 1-hour off timer 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 procedure: regardless of whe...

  • Page 71

    15 • use the flap button on the remote controller to adjust the position of the flap. If you move the flap by hand, the flap position according to the remote controller and the actual flap position may no longer match. If this should happen, shut off the unit, wait for the flap to close, and then tu...

  • Page 72

    16 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 front panel can be removed in order to wash it with water. Removing and remounting the front pa...

  • Page 73

    17 operating range the air conditioner is operable within the temperature ranges as listed below: wired remote controller a separately sold wired remote controller (cz-rd515u) used with this air conditioner is also available. If you wish to use the wired remote control function, you will need to pur...

  • Page 74

    18 specifications model no. Outdoor unit indoor unit cs-ks30nku cu-ks30nkua 30,600 [ 10,900 ~ 30,600 ] 55 single-phase, 208-230 v, 60 hz 9.00 [ 3.20 ~ 9.00 ] - - - - - 35-13/16×37-1/32×13-3/8 (910×940×340) - 49/44/39 - - heating capacity operation sound unit dimensions (h×w×d) (indoor unit : include...

  • Page 76: Installation Instructions

    Installation instructions appendix b cs-ks30nku + cu-ks30nkua cs-ks36nku + cu-ks36nkua (852-6-4190-586-00-0) a-2.

  • Page 77: Installation Instructions

    $/09(08*54+0:054,8;9,9:/,8,-80.,8(4:" >:,84(2+0(3,:,85-9,8 split system air conditioner installation instructions note & contents page important! Please read before starting .................................. 2 1. General .......................................................... 4 1-1. Tools requir...

  • Page 78

    2 important! Please read before starting this air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free op...

  • Page 79

    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 ‡ 'rqrwohdnuhiuljhudqwzklohslslqjzruni...

  • Page 80

    4 1. General this booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1-1. Tools required for installation (not s...

  • Page 81

    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: dir...

  • Page 82

    6 concerning air-intake side distance “a” (fig. 5a) the minimum for distance “a” is 6" if there are no obstructions on the air-discharge side (wall *1 side) and *2 or *4 is not present. In all other cases, the min- imum for distance “a” is 8". If wall *1 is on the air-discharge side (fig. 5a), or if...

  • Page 83

    7 fig. 5e fig. 5f fig. 5g 2-2-1. Installing the unit in an area with high winds and in a snowy area 425*(:0549=0://0./=04+9(=04+6855-+;*: 9/5;2+),-0::,+(4++08,*:,>659;8,:5:/,=04+ 9/5;2+),( 48,.0549=0:/90.40-0*(4:945=-(22:/,5;:+558;40: 9/5;2+),685 +;*:0.- countermeasures against snow and wind 48,.054...

  • Page 84

    8 11-13/16" 13-3/8" 25-3/16" 22-7/8" (6-21/32") 6-5/16" 21-25/32" (12-9/16") 2-11/16" 35-13/16" 37-1/32" air discharge air discharge air discharge hole for anchor bolt (4-r1/4") / anchor bolt : 3/8" or m10 1 air discharge air discharge 25-31/32" 6-11/16" 13-3/8" 25/32" 25/32" 14-31/32" 13/32" 25/32"...

  • Page 85

    9 required space around the outdoor unit -:/,=04+6855-+;*:09;9,+:/,96(*,9/5=4),25=3;9:),9,*;8,+(85;4+:/,5;:+558;40: -:/,;40:09;9,+=0:/5;::/,8,7;08,+96(*,(685:,*:0 #04.2,;40:049:(22(:054 caution $/,:56(4+)5:/90+,93;9:8,3(0456,4-:/,8,(8,5)9:(*2,9:5:/,-854:(4+8,(85- :/,5;:+558;40::/,5)9:(*2,(:,0:/,8:/,...

  • Page 86

    10 25-13/32" 3/32" 13-3/8" (11-15/16") 16-15/16" air intake air discharge 39-1/4" 27-7/32" 7-1/32" 35-15/16" 28-15/16" 27-5/8" (11-5/8") air intake 13/32" 14-31/32" 25/32" 25/32" 25/32" 13-3/8" 4-11/32" 1 (8-15/16") 25-31/32" air discharge 1 unit: inch hole for anchor bolt (4-r1/4") / anchor bolt: 3...

  • Page 87

    11 reference diagram for snow-proof duct space requirements for setting cu-ks30nkua, cu-ks36nkua with stk-bdv80e 0458358, #04.2,;40:049:(22(:054 ;2:062,;40:049:(22(:05458358,;40:9 [obstacle to the front of unit] 0458358, [obstacle to the rear of unit] #04.2,;40:049:(22(:054 ;2:062,;40:049:(22(:05458...

  • Page 88

    12 04 58358, 04 58358, 04 58358, 04 58358, 04 58358, 04 58358, #04.2,;40:049:(22(:054 ) 49:(22(:0540965990)2,=0:/:/,3(>03;35;:+558;40:9 9:(*2,954)5:/90+,9 [installation in front-rear rows] [obstacles to the front and rear of unit] $/,:56(4+)5:/90+,93;9:8,3(0456,40:/,8:/,5)9:(*2,:5:/,-854:58:/,5)9:(*...

  • Page 89

    13 rear panel fig. 7c rear panel fig. 7b set screw only for transportation fig. 6 rear panel marks fig. 7a ,-: :;)04. "0./: :;)04. "0./:8,(8 :;)04. 8,*533,4+,+ "0./:+5=4=(8+ :;)04. ,-:8,(8 :;)04. ,-:+5=4=(8+ :;)04. Fig. 8 3. How to install the indoor unit 3-1. Remove the rear panel from the unit (1)...

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    14 indoor side outdoor side hole should be made at a slight downward slant to the outdoor side. Note fig. 10 plastic cover inside outside wall slight angle 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-cuttin...

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    15 3-4. Removing and installing the grille basically, these models can be installed and wired with- out removing the grille. If access to any internal part is needed, follow the steps as given below. How to remove the grille (1) open the front panel until it is nearly horizontal, grasp the sections ...

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    16 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 a hacksaw or the like. (figs. 20 and 21) b) right-rear or left-rear tubing in this case, the corner of the frame need not be cut. (2) to mount the indoo...

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    17 3-7. Wire size and length regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Carefully observe these regulations when carrying out the installation. Refer to the wiring system diagram (fig. 23) for the mea...

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    18 3-8. Wiring instructions for inter-unit connections (1) insert the inter-unit wiring (according to local codes) into the through-the-wall pvc pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face. (fig. 24) (2) grasp both ends of the front panel, pu...

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    19 when connecting each power wire to the corresponding terminal, follow the instructions “how to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate. How to connect wiring to the terminal a) for indoor unit (1) cut the wire end with a cutti...

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    20 3-9. Mounting (1) to install the indoor unit, mount the indoor unit onto the 3 tabs on the upper part of the rear plate. (2) hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (fig. 3...

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    21 hole in wall bent part narrow tube wide tube rear panel fig. 38 drain cap drain hose clamp fig. 39 left-side tubing (1) lead the tubing and drain hose through the wall, allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attach- ment. (fig. 38) (2) swit...

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    22 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 and unmount. (fig. 42) 3-10. Frame fastening method (1) remove the screw cover on the bottom surface. (fig. 43) (2) fasten the frame to the rear panel using the 2 sup- pli...

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    23 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. For field wiring requirements, please refer to your local elec- trical codes. Make sure that the insta...

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    24 5. Refrigerant tubing 5-1. Use of the flaring method many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. 5-2...

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    25 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...

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    26 6. Air purging air and moisture remaining in the refrigerant system have 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...

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    27 (5) with the vacuum pump still running, close the “lo” knob of the manifold valve. Then stop the vacuum pump. (6) with the hex wrench, turn the valve stem on the nar- row tube service valve counter-clockwise by 90 degrees (1/4 turn) for 10 seconds, and then turn the stem clockwise to close it aga...

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    28 how to test run the air conditioner after turning on the power of the air conditioner, use the remote controller and follow the steps below to conduct the test 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 pre...

  • Page 105

    29 pump down pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit. Pump down procedure be sure to carry out pump down with the unit in cooling ...

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    30 ( $,3658(8?*544,*:054 #*8,=04@:;849)?/(4+0.* ) $5-(9:,4:/,-2(8,4;:9(662?96,*0-0,+:587;, (9$()2,(4+0.+ fig. 60c fig. 60d caution $587;,=8,4*/ be sure to tighten the flare nut using the prescribed torque. If the nut is over- tightened, refrigerant leakage may occur. Press set in place remote contro...

  • Page 107

    31 8. Address switch 8-1. Address setting of the remote controller the address can be set in order to prevent interference between remote controllers when 2 indoor units are installed near each other. The address is normally set to “a.” to set a different address, it is necessary to change the addre...

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