Instruction/ maintenance manual of the product CU-KS18NKUA Panasonic
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TECHNICAL & SER VICE MANU AL CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU A DC INVER TER SPLIT SYSTEM AIR CONDITIONER Indoor Unit Outdoor Model No.
• Before doing repair work, please read the " SAFETY PRECA UTIONS" carefully and fully understand them. • The precautionary items here are divided into " W arning" and " Caution" items.
W arning 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 wor k, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated. Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle.
T able of Contents SAFETY PRECA UTIONS T ABLE OF CONTENTS 1. OPERA TING RANGE 2. SPECIFICA TIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL D A T A 4. REFRIGERANT FLO W DIA GRAM 4-1.
10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance 10-2. Checking Continuity of Fuse on PCB Ass'y 11. REFRIGERANT R410A: SPECIAL PRECA UTIONS WHEN SER VICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-2. Checklist bef ore Ser vicing 11-3.
95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 1. OPERA TING RANGE Maximum Minimum 115 °F DB 67 °F DB T emperature Indoor Air Intake T emp. Outdoor Air Intake T emp. Cooling 95 °F DB / 71 °F WB 67 °F DB / 57 °F WB Maximum Minimum 115 °F DB 0 °F DB T emperature Indoor Air Intake T emp.
< 230V > Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU 2-1-1. Vertical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 8.3 1,860 ( 1.2 to 8.3 ) ( 250 to 1,860 ) 17,500 5.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU 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 Shipping Volume Net Shipping Weight Ib.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU < 208V > 2-1-2. Vertical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 9.1 1,860 ( 1.2 to 9.1 ) ( 250 to 1,860 ) 17,500 5.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib.
Indoor Unit CS-KS12NB41 & CZ-18BT1U Outdoor Unit CU-KS12NK1A 2-1-3. Vertical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 12.6 1,260 ( 2.5 to 12.6 ) ( 250 to 1,260 ) 11,900 3.
Indoor Unit CS-KS12NB41 & CZ-18BT1U Outdoor Unit CU-KS12NK1A DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib.
< 230V > Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKUA 2-1-4. Vertical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 8.3 1,860 ( 1.2 to 8.3 ) ( 250 to 1,860 ) 17,500 5.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKUA < 208V > 2-1-5. Vertical dB-A dB-A Indoor : Hi/Me/Lo Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 9.1 1,860 ( 1.2 to 9.1 ) ( 250 to 1,860 ) 17,500 5.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib.
Indoor Unit (Body) CS-KS12NB41 Indoor Unit (Panel) CZ-18BT1U 2-2. Major Component Specifications 2-2-1. Indoor Unit MP24ZN-12V ... 2 Flap Motor Type Stepping Motor Rating Model ... Q'ty Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 380 +/- 7% DC 12V PLD-12115ST-1 .
Indoor Unit (Body) CS-KS18NB4UW Indoor Unit (Panel) CZ-18BT1U MP24ZN-12V ... 2 Flap Motor Type Stepping Motor Rating Model ... Q'ty Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 380 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 18.
Outdoor Unit CU-KS18NKU 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 : 77.5 77.5 77.5 Micro F VAC External Finish Acrylic baked-on enamel finish FV50S .
Outdoor Unit CU-KS12NK1A Control PCB Control Circuit Fuse Controls Part No. Microprocessor 125V 25A CB-CU-KS12NK1A DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Finish Acrylic baked-on enamel finish FV50S .
Outdoor Unit CU-KS18NKUA Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS18NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Finish Acrylic baked-on enamel finish FV50S .
2-3. Other Component Specifications Indoor Unit CS-KS12NB41 & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU CU-KS12NK1A CU-KS18NKU A 0 32 50 68 86 104 122 140 158 176 194 (0) (10).
3. DIMENSIONAL D A T A Indoor Unit CS-KS12NB41 & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U 6-5/16 6-11/16 1-3/16 (30) 4-19/32 1-25/32 1-25/32 2-3/32 8-15/32 22-5/8 (575) 11-5/32 (283) 3 6 5 Less than.
10-13/16 3-19/32 ID:23/32 2-ID:15/16 21-3/16 6-3/32 4-9/32 2-5/32 Narrow tube service valve dia.1/4" (6.35) Wide tube service valve dia.3/8" (9.
Unit : inch (mm) (852-0-0010-13300-0) Narrow tube service valve dia.1/4" (6.35) Wide tube service valve dia.1/2" (12.70) 4-3/8 2-5/32 6-17/32 5-23/32 3/32 26-3/8 (670) 23/32 1-13/16 34-21/32.
Wide tube Narrow tube Heat exchanger Indoor unit Strainer O.D. 3/8" (9.52 mm) O.D. 1/4" (6.35 mm) 4. REFRIGERANT FLO W DIA GRAM 4-1. Refrigerant Flow Diagram Indoor Unit CS-KS12NB41 & CZ.
Wide tube Narrow tube Indoor unit O.D. 1/2" (12.7mm) O.D. 1/4" (6.35 mm) Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU CU-KS18NKU A Heat exchanger Strainer Compressor Accumulator Wide tube service valve Narrow tube service valve Heat exchanger Muffler Cooling cycle Outdoor unit Electric expansion valve M H.
Hi Fan Lo Fan Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure performance chart (2) Operating current performance chart (3) Indoor discharge air performance chart Check each performance value in test-run mode.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NO TE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz,.
5-2. Cooling Capacity Indoor Unit : CS-KS12NB41 & CZ-18BT1U Outdoor Unit : CU-KS12NK1A P ower Supply : 115V Single Phase 60Hz < Cooling Capacity > TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp.
Indoor Unit : CS-KS18NB4UW & CZ-18BT1U Outdoor Unit : CU-KS18NKU or CU-KS18NKU A P ower Supply : 230V Single Phase 60Hz < Cooling Capacity > 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB : Outdoor Ambient Temp.
5-3. Cooling Capacity (Low Ambient) Indoor Unit : CS-KS12NB41 & CZ-18BT1U Outdoor Unit : CU-KS12NK1A P ower Supply : 115V Single Phase 60Hz < Cooling Capacity (Low Ambient) > TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1.
Indoor Unit : CS-KS18NB4UW & CZ-18BT1U Outdoor Unit : CU-KS18NKU A P ower Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) > RATING CAPACITY: 17,500 BTU/h AIR FLOW RATE: 341 CFM INDOOR OUTDOOR ENT. TEMP. o F ( o C) AMBIENT TEMP.
6. ELECTRICAL DA T A 6-1. Electrical Characteristics Indoor Unit CS-KS12NB41 & CZ-18BT1U Outdoor Unit CU-KS12NK1A Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor + Compressor Performance at 115V Single-phase 60Hz Rating conditions Running amp.
Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.15 Power input W A W A W A W 22 8.15 1,838 Rating conditions: Indoor air temperature: 80 °F (26.
6-2. Electric Wiring Diagrams Indoor Unit CS-KS12NB41 & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U 8FA2-5250-46900-2 1 2 3 4 5 6 1 2 3 4 5 6 FM DP F AN MOT OR DRAIN PUMP DCM 6P (BLU) 6P (WHT) DP 3P (B.
Outdoor Unit CU-KS12NK1A 8FA2-5251-12300-2 37.
Outdoor Unit CU-KS18NKU CU-KS18NKUA 8FA2-5251-12000-2 25A CONTROLLER DCFM MV0 F AN MOT OR 1 2 3 4 5 6 7 BLK WHT RED BLU YEL BLK WHT RED BLU YEL w w w w w w w w 1 2 3 4 5 5 1 2 4 3 1 2 1 2 1 2 3 4 5 6 .
ACL (Reset) button 1HR. TIMER button ON/OFF operation button HIGH POWER button T est run mode Self-diagnostic mode Address setting mode Fig. 1 Fig. 2 Fig.
One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Disconnect Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside.
7-3. Disassembly Procedure 7-3-1. Remove the air intake grill. (1) Slide the 2 latches each to the corresponding arrow direction. (Fig. 1 and Fig. 2) Open downward the air intake grill located on the latch side. (2) Undo the air intake grill drop preventive hook.
NO TE 7-3-3. Remove the ceiling panel. (1) Open the clamp (4 locations) and remov e the 2 lead wires from the clamps. (Fig. 6) (2) Remov e the 4 screws fixing the corner cov er (at 3 locations) and indicator cover (at 1 location). (Fig. 6) (3) Press the center 1 of the cov er and remov e the cov er with the section 2 pulled down.
1 2 3 7-3-4. Remove the indoor air temperature sensor. (1) Disconnect the connector CN08 (ROOM 2P) in the control box and remove the indoor air temperature sensor. (Fig. 10) 7-3-5. Remove the power box and control box. (1) Remove a screw and remove the terminal cover.
12 3 (4) Disconnect the connector CN07 (DP 2P) in the power box. (Fig. 13) Remove a screw and disconnect the ground cable. (Fig. 13) (5) Disconnect the connector CN03 (DCM 6P) in the power box. (Fig. 14) (6) Remove the 4 screws and remove the power box.
For the removal of the following components, perform any work after removing the indoor unit (main body) from the ceiling. Main body lower section Heat exchanger sensor Drain pump Float switch Turbo fan Fan motor Heat exchanger 1. Perform the work after draining the water to prevent the water leakage from the drain pan.
7-3-7. Remove the heat exchanger sensor. (1) Remov e the heat e xchanger sensor from the sensor holder . (Fig. 19) 7-3-8. Remove the drain pump and float switch. (1) Remov e the 2 screws (Fig. 20) (2) Loosen the clamp and disconnect the drain hose from the drain pump .
7-3-9. Remove the turbo fan and fan motor. (1) Remov e a nut and remov e the turbo f an. (Fig. 22) (2) Remov e the 2 screws and 3 nuts , and remov e the fan motor . (Fig. 23) 7-3-10. Remove the heat exchanger. (1) Remov e the 3 screws . (Fig. 24) (2) Remov e the 3 screws .
8. FUNCTIONS 8-1. Operation Functions Emergency operation SENSOR DR Y During DR Y operation, the system adjusts the room temperature and f an speed according to the conditions in the room, in order to maintain a comf or table room environment. SENSOR DR Y operation DR Y operation is as shown in the figure below .
HIGH PO WER NIGHT SETB A CK Lamp colors Timer backup This function acts to raise the power b ut keeps the A C system in the same operating mode. This function is set with the HIGH PO WER button on the remote controller . (It can be set regardless of the temperature and f an speed settings.
a. Area: Automatic capacity control b. When the temperature drops belo w P oint A, the operation frequency is reduced by a certain propor tion. c. Area: F requency increase is prohibited. d. When the temperature reaches P oint C or above , freezing pre vention is ended and control is the same as in the a area.
< Clock display > Test run mode Self-diagnostics mode 9. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) 9-1. Precautions before Performing Inspection or Repair NO TE After checking the self-diagnostics monitor , tur n the power OFF bef ore star ting inspection or repair .
Since the indications cover various units, the corresponding parts listed below may not be present in some models. (1) Self-diagnostics Lamps (1) DRAIN PUMP F AILURE (2) FS F AILURE (3) CHOKED DRAIN HOSE 8512-5261-99100-1 REMO TE CONTROL receiver OPERA TION lamp TIMER lamp OPERA TION button HIGH PO WER lamp INDOOR UNIT TIMER LAMP BLINKING (3 SEC.
(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 9-3.
(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 l.
What is the latest self-diagnosis result ? Condition: E12 Defect in the outdoor unit P .C. board. Condition: E01 Defect or connection error in the inter-unit cable Defect in the indoor unit P .C. board ( Continued from the pre vious page A. ) A ( Continued from the pre vious page B.
(3-2) Condition: E12 T roubleshooting Serial Communication 1. T ur n off the power and wait until the po wer lamp (LED) of the outdoor unit controller is turned OFF . 2. Disconnect the cable from the terminal 3 on the indoor unit terminal str ip . (Fig.
[T rouble symptom 3] Motor rotates for some time (se veral seconds), b ut then quickly stops, when the indoor unit operates. (There is trouble in the system that pro vides feedbac k of motor rotation speed from the motor to the indoor unit controller .
9-4-2. Outdoor Fan Motor This outdoor DC f an motor contains an inter nal control PCB. Theref ore, it is not possible to measure the coil resistance, and the f ollowing procedure should be used to chec k the motor . P erf or m the trouble diagnosis b y T est Run mode described on Installation Instructions.
9-5. Noise Malfunction and Electromagnetic Interference An inv er ter A/C operates using pulse signal control and high frequencies. Therefore , it is susceptible to the eff ects of external noise, and is lik ely to cause electromagnetic interference with nearb y wireless devices .
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 10.
Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 10-2. 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.
11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture.
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.
11-3. 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 Vacu.
11-5. 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 "11-3. Tools Specifically for R410A.
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 to the unit.
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 11-6. In Case Refrigerant is Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit.
11-7. Charging Additional Refrigerant 11-7-1. 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.
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Operating Instructions APPENDIX A (852-6-4181-211-00-1) CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKUA A-1.
Split System Air Conditioner Model No. Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181211001 Indoor Units CS-KS12NB41 CS-KS18NB4UW Outdoor Units (For Single use) CU-KS12NK1A CU-K.
2 FEA TURES This air conditioner is a n inverter type u nit that automaticall y adjusts ca pability as appropriate. Details on these functions are provided be low; ref er to these descriptions when using the air conditioner .
3 INST ALLA TION LOCA TION • W e recommend that this air conditioner be installed properl y by qualified ins tallation technicians in accor dance with the Installation Instr uctions pr ovided with the unit.
4 NAMES OF P ARTS This illustr ation is based on the e xternal view of a standa rd model. Consequently , the shape ma y differ from th at of the air conditioner which y ou hav e selected. This air conditioner consists of an i ndoor unit and an outdoor unit.
5 REMO TE CONTROLLER (DISPLA Y) (1) Operation mod e MILD DR Y .... ................... ....... COOL ........... ................ .......... F AN .............. ................ .......... (2) F an speed A utomatic operation ........... .... HIGH .....
6 REMO TE CONTROLLER T ransmitter When you press the buttons on t he remote controller , the mark appears i n the displa y to transmi t the setting ch anges to the recei ver in the air conditioner . Display Inf or mation on the oper ating conditions is di splay ed while the remote controller is s witched on.
7 Sensor A temperature sensor ins ide the remote controller senses the room temperature . (Co ver closed ) CLOCK button A CL button (ALL CLEAR) Puts the remote controller into pre-ope rati on status. Alwa ys press this button after replacing the batteries.
8 USING THE REMO TE CONTROLLER HO W T O INST ALL BA TTERIES 1. Slide the co ver in the d irection indicated by the arrow and remo ve it. 2. Install two AAA alkaline batteries. Mak e sure the batteries point in the direction marked in t he batte r y compar tment.
9 OPERA TION WITH THE REMO TE CONTROLLER 1. Operation 2. Adjusting the Fan Speed A. A utomatic fan speed Simply set the F AN SPEED selector b utton to the position.
10 4. Night Setback Mode Night Setbac k Mode is used f or saving energy . Press the NIGHT SETBACK b utton while unit is operating. The mark appears in the display . T o release the night setback fun ction, press the NIGHT SETBACK button again. In Cooling and DR Y Mode: ( and ) 5.
11 1. How to set the p resent time (Example) T o set to 10:30 pm. 2. How to set the OFF time (Example) T o stop the air conditioner at 11:00 am. 3. How to set the ON time (Example) T o star t operation at 7:10 am. 4. How to set dail y ON/OFF repeat timer (Example) T o star t operation at 7:10 a m.
12 USING THE 1-HOUR OFF TIMER 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regar dless of whether the unit is on or off when this button is pressed. The indicator in the displa y i ndicates that this function is operating.
13 OPERA TION WITHOUT THE REMO TE CONTROLLER If you ha ve lost the remote control ler or it has trouble, f ollow the steps below . When the air conditioner is not running Each time the OPERA TION bu tton is pressed, the oper ation mode changes cyclically .
14 Air filter The air f ilter collects dust an d other par ticles from the ai r and should be cleaned once ev er y 6 months . If the fil ter gets bloc ked, the eff iciency of the air conditioner drops greatly . The frequency with which the f ilter should be cleaned depends on the en vironment in which the unit is used.
15 TR OUBLESHOO TING (BEFORE CALLING FOR SER VICE) If your air co nditioner does not work properly , f irst check the f ollowi ng points bef ore requesting service.
16 SPECIFICA TIONS Model No. • F or Single use • F or Single use Heating Capacity Operation Sound Unit Di m ensions (H×W×D) Net W eight P ower 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) Model No.
17 Model No. • F or Multiple use • F or Multiple use Heating Capacity Operation Sound Unit Di m ensions (H×W×D) Net W eight P ower Source Cooling Capacity kW BTU/h kW BTU/h inch( mm ) lbs.(kg) Cooling Operation (H/M/L) Heating Operation (H/M/L) dB(A) dB(A) Indoor Unit CS-KS18NB4UW 17,500 Single-phase, 208-230 V , 60 Hz 5.
A-2 INSTALLATION INSTRUCTIONS APPENDIX B (852-6-4190-574-00-1) CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKUA.
This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264190574001 2011 INST ALLA TION INSTRUCTIONS NOTE CV6233187785 Contents Page IMPORT ANT! Please Read Before Starting .
2 IMPORT ANT! 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 .
3 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ $SSOUHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak- free connection.
4 Printed on container box For unit & PVC tube connection For drain hose connection Remarks Q’ty For full-scale installation diagram 1 2 4 4 4 4 2 1 For temporarily suspending indoor unit from c.
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.
6 2-2. Outdoor Unit A VOID: heat sources, exhaust fans, etc. (Fig. 3) damp, humid or uneven locations. DO: choose a place as cool as possible.
7 2-3. Baffle Plate for the Outdoor Unit (Low Ambient Cooling models only) It is recommended to use baffle plates for models CU-KS12NK1A and CU-KS18NKUA.
8 (1) Recommended dimensions of the baffle plates D E C J H K G B I P Q A F N (2- 6.5 mm) 2- 1/4" (2- 6 mm) 2- 15/64" A B H C E F G G M L K I J D (4- 6.5 mm) 4- 1/4" Fig. 5e For Air Intake For Air Discharge Material to be used: Metal plate with corrosion protection treatment Plate thickness: 0.
9 (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 treatment Plate thickness: 0.
10 (3) Installation procedure Panel front Panel side R Panel side L Fig. 5h Fig. 5i 2. Air Discharge Baffle 1. Remove the panels front, side L and R from the unit and drill 4 holes of ø1/4 inch (6.5 mm) at the prescribed positions. 2. Install the windbaffle on the unit using field supply bolts and nuts.
11 Panel top Panel front Panel side R Panel side L Fig. 5k 1. Air Intake Baffle (1) Left side 1. Remove the top panel from the unit. 2. Remove the panel side L, and drill 3 holes of ø1/4 inch (6.5 mm) at the prescribed positions. 3. Install the windbaffle on the unit using field supply bolts and nuts.
12 Hole-in-anchor Concrete Insert Suspension bolt (M10 or 3/8") Hole-in-plug (locally purchased) Fig. 6-1 23-5/8"(600 mm ) 21-1/32"(534 mm ) Ceiling opening dimensions Suspension bolt p.
13 In cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of 2.78 ft. (850 mm) above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 2.78 ft.
14 A must be within the range of 1/2"(13 mm ) to 23/32"(18 mm ). (Fig. 6-11) If not within this range, malfunction or other trouble may occur.
15 (2) Removing the corner cover and indicator cover a) While lightly pressing the cen- ter of the corner cover , pull up the tab for the screw hole. Use the same procedure to remove the indicator cover .
16 Fig. 6-23 Fig. 6-24 Fig. 6-25 fit into the holes in the ceiling panel. Place the corner cover so that the 3 tabs Then fasten it in place with the supplied screws. Pin Hole for ceiling panel hook the grille from dropping Hook that prevents Can be installed rotated 90 * The grille can be installed with these hinges facing in any of 4 directions.
3-7. Wiring Instructions General precautions on wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.
18 Cross-Sectional (A)+(B) (A) Power Supply Wiring Length (ft) (C) Control Fuse or Circuit Area (A WG) (B) Power Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CU-KS12NK1A 131 (Max.) 230 (Max.) 65 (Max.) 20A CU-KS18NKU, CU-KS18NKUA 131 (Max.
19 When connecting each power wire to the corresponding terminal, fol- low the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate.
20 For stranded wiring (1) Cut the wire end with a cutting pliers, then strip the insulation to expose the stranded wiring about 3/8" (10 mm) and tightly twist the wire ends. (Figs. 1 1 and 12) (2) Using a screwdriver , remove the terminal screw(s) on the terminal plate.
21 5. Refrigerant T ubing 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.
22 5-4. Connecting T ubing between Indoor and Outdoor Units a) T ightly connect the indoor side refrigerant tubing exten- ded from the wall with the outdoor side tubing.
23 Insulated tubes Drain hose Clamp Hi Lo Indoor unit Outdoor unit Manifold v alve (Exclusively f or R410A) Pressure gauge V acuum pump Charging hose (Exclusively f or R410A) V acuum pump adapter (Exc.
24 (4) With the “Lo” knob of the manifold valve open, run the vacuum pump. The operation time for the vacu- um pump varies with tubing length and the capacity of the pump. The following table shows the amount of time for evacuation: T able 6 Required time for evacuation when 26.
25 How to T est 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 T est Run mode. (Fig. 29) a) Press and hold the HIGH POWER button and the 1HR.
26 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 mode.
27 7 . Remote Controller Installation Position The remote controller can be operated from either a non-fixed position or a wall-mounted position. T o ensure that the air conditioner operates correctly.
28 ACL (Reset) button 1HR. TIMER button ON/OFF operation button HIGH POWER button 8. Address Switch 8-1. Address Setting of the Remote Controller The address can be set in order to prevent interfer- ence between remote controllers when 2 indoor units are installed near each other .
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Operating Instructions CZ-RD515U (852-6-4181-230-00-1) APPENDIX C A-3.
Wired Remote Controller Model No. CZ-RD515U Operating Instructions Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181230001 CV6233187877 This wired remote controller is designed for both the “COOL/DRY/HEAT Model” and “COOL/DRY Model” indoor unit.
2 FEA TURES • Micropr ocessor Co ntr olled Operation The interior comp ar tment of the re mote controller cont ains sev eral f eatures to facilitate automatic op eration, easy logically displa yed f or easy use. • 24-Hour ON or OFF Timer This timer can be set to automatically turn the unit on or off at any time within a 24 hour period.
3 INST ALLA TION LOCA TION W e recommend that this wired remote controller be installed proper ly by qualified installation technicians in accor dance with the Installation Inst ructions pro vided with the unit.
4 REMO TE CONTROLLER Display Inf or mation on the oper ating conditions is dis play ed while the remote controller is s witched on. If the unit is tur ned off , only the mode that was set previously is still displayed. F AN SPEED selector b utton : The air conditioner automatically dec ides the fan speeds .
5 Sensor A temperature sensor inside the remote controller senses the room temperature. ON/OFF operation b utton This bu tton is for t ur ning the air condit ioner on and off.
6 REMO TE CONTROLLER (DISPLA Y) (1) Operation mod e A U T O ........... ................ .......... (only f or COOL/DR Y/HEA T Model) HEA T .................. ................ .... (only f or COOL/DR Y/HEA T Model) MILD DR Y .... ................... .
7 OPERA TION WITH THE REMO TE CONTR OLLER 1. A utomatic Operation (only f or COOL/DR Y/HEA T Model) • Single use This unit automatically s witches between cool ing operation and heating operatio n according to the difference be tween the room temperature and the t emperature setting.
8 3. Adjusting the Fan Speed A. A utomatic fan speed Simply set the F AN SPEED selector button to the position. This automatically sets th e best fan speed for the room temperature. B. Manual fa n speed If you w ant to adjust fan speed manually during operati on, just set the F AN SPEED selector bu tton as desired.
9 SETTING THE TIMER 1. How to set the p resent time (Example) T o set to 9:10 pm. 2. How to set the OFF time (Example) T o stop the air conditioner at 11:30 pm. T o cancel the setting, press the TIMER SELECT button twice. 3. How to set the ON time (Example) T o star t operation at 7:10 am.
10 USING THE 1-HOUR OFF TIMER 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regar dless of whether the unit is on or off when this button is pressed. The indicator in the displa y i ndicates that this function is operating.
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A-4 INSTALLATION INSTRUCTIONS CZ-RD515U (852-6-4190-592-00-0) APPENDIX D.
Parts supplied with the remote controller See T able 1. Remote controller installation guidelines Mount the remote controller 3.3 to 4.9 ft. (1 to 1.
2 A. Installing with in-wall junction box (1) Install the junction box (locally purchased) into the wall. (Figs. 2-a and 3) (2) Pass the wire harness through the junction box and conduit. (Fig. 3) (3) Insert a flathead screwdriver into the 5 tab locations and disconnect the back plate of the remote controller by lifting up slightly .
Fig. 8 Indicator Wire harness Ceiling panel T erminal cover Clamps 7P IND and 4P RC wiring connector 5P FLAP wiring connector Clamping strap FLAP RC IND 7P 4P 5P FLAP wiring connector Wire harness Rem.
4 Fig. 9 Fig. 10 Fig. 1 1 ON/OFF operation button 1 HR.TIMER button NIGHT SETBACK button ACL (Reset) button SENSOR button OPERA TION lamp TIMER lamp HIGH POWER lamp REMOTE CONTROL receiver OPERA TION .
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DC1111-0.
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