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Panasonic CU-3KS19NBU, Техническое и сервисное руководство

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Panasonic CU-3KS19NBU Скачать руководство пользователя страница 63

Outdoor Unit 

CU-4KS24NBU

8FA2-5251-11600-1

63

Содержание CU-3KS19NBU

Страница 1: ...AL SERVICE MANUAL OUTDOOR UNIT CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU DC INVERTER MULTI SYSTEM AIR CONDITIONER Product Code No 1 852 361 24 1 852 361 25 1 852 361 26 REFERENCE NO SM700877 Capacity at 230V 19 700 BTU h 25 400 BTU h 30 600 BTU h Outdoor Model No CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU Semi concealed type CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U CS KS...

Страница 2: ...ection perform the repair work after sufficiently discharging it Insufficient capacitor discharge may cause an electric shock Do not perform repair work on the electric sections with wet hands Doing so may cause an electric shock Do not start or stop the air conditioner by means of connecting or disconnecting the power plug Doing so may cause an electric shock or fire When conducting repair work o...

Страница 3: ...on Caution Do not wash the air conditioner with water as this may cause an electric shock or fire For the repair work in places with high humidity or moisture make sure to ground the unit Failure to do so may cause an electric shock Confirm that the component attachment position wiring condition soldering condition and connector connection are normal If not it may cause overheating or fire Confirm...

Страница 4: ...T FLOW DIAGRAM 4 1 Refrigerant Flow Diagram 5 PERFORMANCE DATA 5 1 Temperature Charts 5 2 Cooling Capacity 5 3 Cooling Capacity Low Ambient 6 ELECTRICAL DATA 6 1 Electric Wiring Diagrams 7 FUNCTIONS 7 1 Explanation of Functions 7 2 Protective Functions 8 TROUBLESHOOTING BEFORE CALLING FOR SERVICE 8 1 Precautions before Performing Inspection or Repair 8 2 Trouble Diagnosis by Error Monitop Lamps 8 ...

Страница 5: ...ics of New Refrigerant R410A 9 2 Checklist before Servicing 9 3 Tools Specifically for R410A 9 4 Tubing Installation Procedures 9 5 In Case of Compressor Malfunction 9 6 In Case Refrigerant is Leaking 9 7 Charging Additional Refrigerant 9 8 Retro Fitting Existing Systems APPENDIX A INSTALLATION INSTRUCTIONS 5 ...

Страница 6: ...S YES YES YES YES YES YES YES YES YES YES NO YES YES CS MKS9NKU CS MKS12NKU CS MKS18NKU CS MKS24NKU Wall Mounted Type CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU Multi Outdoor Unit Indoor Unit 3 Room 4 Room 4 Room CS MKS9NB4U CZ 18BT1U YES YES YES YES YES YES YES YES YES CS MKS12NB4U CZ 18BT1U CS KS18NB4UW CZ 18BT1U Semi Concealed Type 6 ...

Страница 7: ...95 F DB 71 F WB 67 F DB 57 F WB 1 OPERATING RANGE Maximum Minimum 115 F DB 14 F DB Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling 7 ...

Страница 8: ... 3 3 8 9 52 3 ft m dB A Max allowable tubing length per unit Flare Type 82 25 R410A 6 17 2 800 Electric Expansion Valve DC Twin Rotary Inverter Fan Speeds Auto Hi Me Lo Control Microprocessor Features Compressor Locked Rotor Amperes 50 BTU h Performance Power Factor 98 A 13 0 Type BTU h kW Total Capacity BTU h SEER BTU Wh 18 0 3 Number of Connectable Indoor Units 3 Number of Operatable Indoor Unit...

Страница 9: ...door Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 138 9 147 7 13 41 0 38 63 0 67 0 740 900 320 Outdoor Unit 29 1 8 35 7 16 12 19 32 1 4 6 35 3 3 8...

Страница 10: ...door Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 138 9 147 7 13 41 0 38 63 0 67 0 740 900 320 Outdoor Unit 29 1 8 35 7 16 12 19 32 1 4 6 35 3 3 8...

Страница 11: ...om Multi Outdoor Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 138 9 147 7 63 0 67 0 13 41 0 38 740 900 320 Outdoor Unit 29 1 8 35 7 16 12 19 32 1 ...

Страница 12: ...Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 138 9 147 7 63 0 67 0 13 41 0 38 740 900 320 Outdoor Unit 29 1 8 35 7 16 12 19 32 1 4 6 35 4 3 8 9 52...

Страница 13: ...Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 138 9 147 7 13 41 0 38 63 0 67 0 740 900 320 Outdoor Unit 29 1 8 35 7 16 12 19 32 1 4 6 35 4 3 8 9 52...

Страница 14: ... Multi Outdoor Unit Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 174 2 183 0 79 0 83 0 40 1 8 41 11 32 16 21 32 1 019 1 050 423 890 900 320 Outdoor Uni...

Страница 15: ...t Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 174 2 183 0 79 0 83 0 890 900 320 Outdoor Unit 35 1 32 35 7 16 12 19 32 1 4 6 35 4 3 8 9 52 2 1 2 12 7 2...

Страница 16: ...t Outdoor Unit inch 187 to 253 Dimensions Weight Refrigerant Tubing Connections Unit Dimensions Electrical Rating Sensible Capacity Latent Capacity W Power Input V A Available Voltage Range Running Amperes Operation Sound High Cool Narrow tube Wide tube Refrigerant inch mm Tube Diameter inch mm 174 2 183 0 79 0 83 0 890 900 320 Outdoor Unit 35 1 32 35 7 16 12 19 32 1 4 6 35 4 3 8 9 52 2 1 2 12 7 2...

Страница 17: ...ut Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Twin Rotary Hermetic 5KD240XAB21 1 700W U V V W W U 0 720 0 708 0 726 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L 2515 Model Operation Temp Open 239 F 115 C Close 212 F 100 C 23...

Страница 18: ...nal Output Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Twin Rotary Hermetic 5KD240XAB21 1 700W U V V W W U 0 720 0 708 0 726 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L 2515 Model Operation Temp Open 239 F 115 C Close 212 F ...

Страница 19: ...nal Output Compressor Coil Resistance Ambient Temp 68 F 20 C Ohm DC Twin Rotary Hermetic 5JD420XAB22 3 000W U V V W W U 0 435 0 441 0 452 CT Peak current cut off control Compressor Discharge Temp Control Operation cut off control in abnormal ambient Temp Safety Device Micro F VAC Run Capacitor Crankcase Heater Yes Yes Yes Overload Relay CS 7L 2515 Model Operation Temp Open 239 F 115 C Close 212 F ...

Страница 20: ...er Component Specifications CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU Sensor Name Compressor temp sensor TKS293B Model No of sensor 1 1 Quantity of Sensor 1 Outdoor air temp sensor Outdoor heat exchanger sensor AW AN sensor BW BN sensor CW CN sensor DW DN sensor TKS295B TKS292B TKS292B TKS292B TKS292B TKS292B Model No of sensor Sensor Name 1 1 1 1 1 1 1 1 0 Quantity of Sensor 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Страница 21: ...4 7 16 5 29 32 2 27 32 2 3 4 2 1 32 4 1 2 2 15 16 2 3 4 29 1 8 740 23 32 1 13 16 35 7 16 900 23 15 16 5 11 32 15 32 12 19 32 320 13 19 32 14 17 32 11 17 32 I D 2 3 3 2 2 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 3 DIMENSIONAL DATA Outdoor Unit CU 3KS19NBU Unit inch mm 852 0 0010 11500 0 21 ...

Страница 22: ...alve dia 3 8 9 52 3 4 7 16 5 29 32 2 27 32 2 3 4 2 3 4 2 1 32 4 1 2 2 15 16 2 3 4 2 3 4 29 1 8 740 23 32 1 13 16 35 7 16 900 23 15 16 5 11 32 15 32 12 19 32 320 13 19 32 14 17 32 11 17 32 I D 2 3 3 2 2 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 2 13 32 Outdoor Unit CU 4KS24NBU Unit inch mm 852 0 0010 20500 0 22 ...

Страница 23: ...alve dia 3 8 9 52 2 4 7 16 5 29 32 2 1 32 4 1 2 2 15 16 2 3 4 2 3 4 35 1 32 890 23 32 1 13 16 35 7 16 900 23 15 16 5 11 32 15 32 12 19 32 320 13 19 32 14 17 32 11 17 32 I D 2 3 3 2 2 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 2 13 32 Outdoor Unit CU 4KS31NBU Unit inch mm 852 0 0010 20600 0 2 7 8 2 3 4 2 3 4 23 ...

Страница 24: ...on of Refrigerant Tubing Because capillary tubing is used in the outdoor unit both the wide and narrow tubes of this air conditioner become cold To prevent heat loss and wet floors due to dripping of condensation both tubes must be well insulated with a proper insulation material The thickness of the insulation should be a min 5 16 8 mm After a tube has been insulated never try to bend it into a n...

Страница 25: ...mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thickness Min 5 16 8 mm Insulation Narrow tube Thickness Min 5 16 8 mm IMPORTANT CAUTION Service valve on narrow tube Electric expansion valve Service valve on wide tube DN CN BN AN DW CW BW AW O D 1 4 O D 1 4 O D 1 4 O D 1 4 O D 1 2 O D 3 8 O D 3 8 O D 3 8 Cooling ...

Страница 26: ...it both the wide and narrow tubes of this air conditioner become cold To prevent heat loss and wet floors due to dripping of condensation both tubes must be well insulated with a proper insulation material The thickness of the insulation should be a min 5 16 8 mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack Wide tube Thick...

Страница 27: ... 6t 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 174 1 2 188 1 3 160 1 1 146 1 0 77 25 86 30 95 35 104 40 Lo fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 3 2 Lo fan Hi fan HH fan Indoor discharge air temperature F C Outdoor air temperature F C 46 4 8 68 0 20 64 4 18...

Страница 28: ...erformance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CU 3KS19NBU Indoor Unit CS...

Страница 29: ...units where performance is not being checked The performance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo ...

Страница 30: ...rformance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan Operating current A Outdoor air temperature F C 7 8 6 5 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor ...

Страница 31: ...ure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan HH fan HH fan HH fan 160 1 1 174 1 2 146 1 0 132 0 9 77 25...

Страница 32: ...TE Outdoor Unit CU 3KS19NBU Indoor Unit CS MKS12NB4U 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan...

Страница 33: ...TE Outdoor Unit CU 3KS19NBU Indoor Unit CS KS18NB4UW 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan Operating current A Outdoor air temperature F C 7 6 5 4 Lo fan Hi fan Indoor discharge air temperature F C Ou...

Страница 34: ...a tubing length of 24 6t 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 174 1 2 188 1 3 160 1 1 146 1 0 77 25 86 30 95 35 104 40 Lo fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 3 2 Lo fan Hi fan HH fan Indoor discharge air temperature F C Outdoor air temperature F C 4...

Страница 35: ...erformance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CU 4KS24NBU Indoor Unit CS...

Страница 36: ...units where performance is not being checked The performance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo ...

Страница 37: ...rformance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan Operating current A Outdoor air temperature F C 7 8 6 5 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor ...

Страница 38: ...rformance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan Operating current A Outdoor air temperature F C 8 9 7 6 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor ...

Страница 39: ...ure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan Hi fan HH fan HH fan HH fan 160 1 1 174 1 2 146 1 0 132 0 9 77 25...

Страница 40: ...TE Outdoor Unit CU 4KS24NBU Indoor Unit CS MKS12NB4U 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan Indoor discharge air temperature F C Outdoor air temperature F C Lo fan...

Страница 41: ...TE Outdoor Unit CU 4KS24NBU Indoor Unit CS KS18NB4UW 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan Operating current A Outdoor air temperature F C 7 6 5 4 Lo fan Hi fan Indoor discharge air temperature F C Ou...

Страница 42: ...ength of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 146 1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 3 Indoor discharge air temperature F C Outdoor air temperature F C Outdoor Unit CU 4KS31NBU Indoor Unit CS MKS7NKU 1 5 ...

Страница 43: ...e is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 146 1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 3 Indoor discharge air temperature F C Outdoor air temperature F C Outdoor Unit CU 4KS31NBU Indoor U...

Страница 44: ...is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 146 1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 6 3 Indoor discharge air temperature F C Outdoor air temperature F C Outdoor Unit CU 4KS31NBU Indoor U...

Страница 45: ... performance is not being checked The performance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 6 5 7 8 9 4 Indoor discharge air temperature F C Outdoor air temperature F C Outdoor Unit CU 4KS31NBU...

Страница 46: ... performance is not being checked The performance is for a tubing length of 24 6ft 7 5m If the tubing length is different the performance chart will vary NOTE Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 9 8 10 11 12 Indoor discharge air temperature F C Outdoor air temperature F C Outdoor Unit CU 4KS31NB...

Страница 47: ...oor Unit CU 4KS31NBU Indoor Unit CS MKS9NB4U 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 146 1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 Indoor discharge air temperature F C Outdoor air tem...

Страница 48: ...r Unit CU 4KS31NBU Indoor Unit CS MKS12NB4U 1 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C 146 1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan Operating current A Outdoor air temperature F C 4 5 6 Indoor discharge air temperature F C Outdoor air te...

Страница 49: ...ill vary NOTE Outdoor Unit CU 4KS31NBU Indoor Unit CS KS18NB4UW 1 146 1 0 174 1 2 118 0 8 90 0 6 1 Low pressure performance chart 2 Operating current performance chart 3 Indoor discharge air performance chart Low pressure at wide tube service valve psig MPaG Outdoor air temperature F C Lo fan Hi fan Operating current A Outdoor air temperature F C 6 5 7 8 9 Indoor discharge air temperature F C Outd...

Страница 50: ... 990 16 170 15 290 TC 19 800 19 130 18 420 17 880 17 030 16 120 72 22 2 SHC 13 220 12 920 12 620 12 470 12 010 11 710 63 76 24 4 SHC 15 940 15 630 15 330 15 030 14 730 14 430 17 2 80 26 7 SHC 18 650 18 350 18 050 17 880 17 030 16 120 84 28 9 SHC 19 800 19 130 18 420 17 880 17 030 16 120 88 31 1 SHC 19 800 19 130 18 420 17 880 17 030 16 120 TC 20 730 20 050 19 320 18 800 17 920 16 970 72 22 2 SHC 1...

Страница 51: ...60 14 900 TC 19 260 18 620 17 930 17 410 16 590 15 710 72 22 2 SHC 12 430 12 160 11 890 11 610 11 340 10 930 63 76 24 4 SHC 14 770 14 490 14 220 13 940 13 670 13 260 17 2 80 26 7 SHC 17 230 16 960 16 690 16 410 16 140 15 710 84 28 9 SHC 19 260 18 620 17 930 17 410 16 590 15 710 88 31 1 SHC 19 260 18 620 17 930 17 410 16 590 15 710 TC 20 150 19 500 18 800 18 300 17 450 16 540 72 22 2 SHC 9 830 9 55...

Страница 52: ...000 TC 26 760 25 900 24 950 24 370 19 290 14 270 72 22 2 SHC 16 240 15 940 15 480 15 180 13 070 10 960 63 76 24 4 SHC 18 950 18 500 18 200 17 900 15 630 13 670 17 2 80 26 7 SHC 21 820 21 370 20 910 20 610 18 500 14 270 84 28 9 SHC 24 380 24 080 23 630 23 330 19 290 14 270 88 31 1 SHC 26 760 25 900 24 950 24 370 19 290 14 270 TC 27 750 26 880 25 910 25 400 19 630 14 500 72 22 2 SHC 13 070 12 620 12...

Страница 53: ...0 18 300 13 510 TC 26 160 25 290 24 340 23 760 18 710 13 790 72 22 2 SHC 16 210 15 890 15 420 15 260 13 050 11 160 63 76 24 4 SHC 19 040 18 730 18 260 17 940 15 890 13 790 17 2 80 26 7 SHC 21 880 21 570 21 100 20 940 18 710 13 790 84 28 9 SHC 24 720 24 410 23 930 23 620 18 710 13 790 88 31 1 SHC 26 160 25 290 24 340 23 760 18 710 13 790 TC 27 180 26 290 25 320 24 800 19 070 14 020 72 22 2 SHC 12 8...

Страница 54: ...8 430 15 820 13 400 19 4 80 26 7 SHC 23 260 22 660 22 250 22 050 19 440 17 020 84 28 9 SHC 26 680 26 280 25 870 25 670 23 060 17 260 88 31 1 SHC 30 300 29 900 29 290 29 290 23 790 17 260 TC 34 630 33 470 32 190 31 890 24 200 17 520 72 22 2 SHC 11 390 10 990 10 590 10 380 7 770 5 560 71 76 24 4 SHC 15 010 14 610 14 210 14 010 11 390 9 180 21 7 80 26 7 SHC 18 830 18 230 17 830 17 830 15 010 13 000 8...

Страница 55: ...TC 29 960 29 000 27 940 27 440 21 790 15 830 72 22 2 SHC 18 780 18 270 17 930 17 580 15 360 12 960 63 76 24 4 SHC 22 040 21 700 21 180 21 010 18 610 15 830 17 2 80 26 7 SHC 25 470 25 130 24 610 24 440 21 790 15 830 84 28 9 SHC 28 730 28 390 27 870 27 440 21 790 15 830 88 31 1 SHC 29 960 29 000 27 940 27 440 21 790 15 830 TC 31 060 30 090 29 010 28 600 22 220 16 110 72 22 2 SHC 14 840 14 500 13 980...

Страница 56: ... 31 1 SHC 19 620 19 540 19 610 19 780 19 680 TC 19 910 19 890 20 060 20 340 20 320 72 22 2 SHC 9 900 19 890 9 900 10 050 10 050 67 76 24 4 SHC 12 620 19 890 12 620 12 770 12 770 19 4 80 26 7 SHC 15 330 19 890 15 480 15 480 15 480 84 28 9 SHC 18 050 19 890 18 050 18 200 18 200 88 31 1 SHC 19 910 19 890 20 060 20 340 20 320 TC 20 060 20 120 20 400 20 830 20 890 72 22 2 SHC 6 430 20 120 6 580 6 730 6...

Страница 57: ...670 72 22 2 SHC 9 420 19 260 9 550 9 690 9 550 67 76 24 4 SHC 11 750 19 260 11 890 12 020 12 020 19 4 80 26 7 SHC 14 220 19 260 14 350 14 350 14 350 84 28 9 SHC 16 550 19 260 16 690 16 690 16 690 88 31 1 SHC 18 880 19 260 19 020 19 020 19 020 TC 19 360 19 430 19 700 20 110 20 170 72 22 2 SHC 6 400 19 430 6 540 6 670 6 670 71 76 24 4 SHC 8 730 19 430 8 870 9 000 9 000 21 7 80 26 7 SHC 11 200 19 430...

Страница 58: ... 12 470 12 620 67 76 24 4 SHC 14 730 25 550 15 030 15 180 15 330 19 4 80 26 7 SHC 17 600 25 550 17 750 18 050 18 050 84 28 9 SHC 20 160 25 550 20 460 20 610 20 760 88 31 1 SHC 22 880 25 550 23 180 23 330 23 480 TC 24 930 25 240 25 840 26 690 27 040 72 22 2 SHC 8 240 25 240 8 540 8 840 9 000 71 76 24 4 SHC 10 960 25 240 11 260 11 560 11 710 21 7 80 26 7 SHC 13 670 25 240 13 970 14 280 14 430 84 28 ...

Страница 59: ...0 12 260 12 420 12 580 67 76 24 4 SHC 14 790 25 080 15 100 15 260 15 420 19 4 80 26 7 SHC 17 780 25 080 17 940 18 260 18 260 84 28 9 SHC 20 460 25 080 20 780 20 940 21 100 88 31 1 SHC 23 300 25 080 23 460 23 780 23 780 TC 24 560 24 850 25 440 26 280 26 600 72 22 2 SHC 8 160 24 850 8 480 8 790 8 950 71 76 24 4 SHC 11 000 24 850 11 320 11 630 11 630 21 7 80 26 7 SHC 13 840 24 850 14 160 14 470 14 63...

Страница 60: ...0 15 410 15 610 67 76 24 4 SHC 18 630 31 270 18 830 19 030 19 030 19 4 80 26 7 SHC 22 250 31 270 22 450 22 860 22 860 84 28 9 SHC 25 870 31 270 26 080 26 280 26 480 88 31 1 SHC 29 490 31 270 29 700 29 900 29 900 TC 30 850 31 120 31 750 32 680 33 020 72 22 2 SHC 10 180 31 120 10 380 10 790 10 790 71 76 24 4 SHC 13 600 31 120 14 010 14 410 14 410 21 7 80 26 7 SHC 17 430 31 120 17 630 18 030 18 230 8...

Страница 61: ...0 14 500 67 76 24 4 SHC 17 410 29 310 17 580 17 760 17 930 19 4 80 26 7 SHC 20 840 29 310 21 010 21 180 21 360 84 28 9 SHC 24 100 29 310 24 270 24 440 24 610 88 31 1 SHC 27 360 29 310 27 530 27 870 27 870 TC 28 970 29 200 29 760 30 580 30 860 72 22 2 SHC 9 700 29 200 9 870 10 210 10 210 71 76 24 4 SHC 12 960 29 200 13 130 13 470 13 640 21 7 80 26 7 SHC 16 380 29 200 16 560 16 900 17 070 84 28 9 SH...

Страница 62: ...6 ELECTRICAL DATA 6 1 Electric Wiring Diagrams Outdoor Unit CU 3KS19NBU 8FA2 5251 11800 1 62 ...

Страница 63: ...Outdoor Unit CU 4KS24NBU 8FA2 5251 11600 1 63 ...

Страница 64: ...Outdoor Unit CU 4KS31NBU 8FA2 5251 11400 1 64 ...

Страница 65: ...the unit remains stopped Positioning of the outdoor unit electric expansion valve is performed The ON OFF operation button on the remote controller is pressed If automatic operation mode has been selected with the remote controller operation begins in SENSOR DRY or COOL mode depending on the room temperature and outdoor temperature at the time operation starts Depending on the operational mode ref...

Страница 66: ...o significant change in the indoor and outdoor temperatures and the previous conditions COOL are stored Starts operating in the same operating mode COOL and with the same temperature settings as before operation was stopped Operation starts after 4 hours or more have passed New operating mode is determined based on the temperature conditions at the time the ON OFF operation button is pressed Stop ...

Страница 67: ... is 59 F or higher and is slightly too cold The compressor operates on a 3 minutes ON 6 minutes OFF cycle to prevent the room temperature from dropping too much DRY operation starts DRY A operation The room temperature is below 59 F When monitoring operation begins the compressor stops and the indoor fan operates at LL very low speed Monitoring operation begins The indoor fan changes between Low a...

Страница 68: ...outdoor air temperature reaches 57 2 F 14 C or less during the cooling operation the operation mode is switched to low ambient cooling operation The following protective actions are available to prevent the compressor from operating with abnormal loads At that time they initiate thermo off stopping the outdoor unit of the air conditioner When the outdoor air temperature reaches 62 6 F 17 C or more...

Страница 69: ...20A Power breakers and fuses will not be tripped Operation can continue during this period with somewhat reduced cooling capacity Operation at normal capacity is restored when the cause of the current rise is eliminated Description of function Example of operation for cooling Frequency Frequency Current Stops operation Approx 3 minutes Power Point C Point B Point A 20A 17A 16 6A Target frequency O...

Страница 70: ...e prohibit range Hz reduction F Compressor discharge temperature 194 Within the increase prohibit range the range changes to the Hz reduction range 2 Hz every 30 seconds if the compressor temperature rises by 4 F Operation starts at 8 Hz and the start current is less than the normal operating current This prevents the flickering of fluorescent lights or television screens that occurs when ordinary...

Страница 71: ... DC 311 V even after the power is turned OFF and some time is required for the charge to dissipate Be careful not to touch any electrified parts before the control circuit board Power Lamp red turns OFF If the outdoor control circuit board is normal approximately 180 seconds will be required for the charge to dissipate However allow at least 30 minutes for the charge to dissipate if it is thought ...

Страница 72: ...ront side Fig 1 View from top ERR0 ERR1 ERR2 ERR3 Power Lamp Error Monitor Lamp Error Contents ERR0 ERR1 ERR2 ERR3 Sensor for compressor discharge temp Sensor for heat excharge temp Sensor for branch pipe A Narrow tube Sensor for branch pipe B Narrow tube Sensor for branch pipe C Narrow tube Sensor for branch pipe D Narrow tube Sensor for branch pipe A Wide tube Sensor for branch pipe B Wide tube ...

Страница 73: ...to the COM terminal of TEST T RUN terminals The LED red on the control board must illuminate The compressor and fan motor must turn ON They turn ON about 70 seconds later after the power is turned ON No 1 2 Check items unit operation NOTE If the above check items are okay but the outdoor unit does not operate there may be a faulty connection between the indoor unit and the outdoor unit 73 ...

Страница 74: ... board Diode module HIC Electrolytic capacitor Fuse Compressor Compressor protective sensor Outdoor fan motor Coil thermistor Electric expansion valve Branch tubing temperature sensor 1 2 3 4 5 6 7 Operation lamp blinking Operation lamp does not illuminate Indoor fan dose not turn Outdoor unit does not operate Outdoor fan dose not turn The compressor only does not operate The compressor stops on o...

Страница 75: ... holder Do not remove or insert the outdoor control circuit board connector when power is being supplied to it The controller will be damaged NOTE Problems Inspection points Indoor unit Indoor unit does not operate Breaker Refrigerant gas pressure 8 9 Operation lamp blinking Operation lamp does not illuminate Indoor fan dose not turn Outdoor unit does not operate Outdoor fan dose not turn The comp...

Страница 76: ...ately 10 to 20 seconds for each point Check the resistance between the gray lead wire and the other wires Resistance is OK if it is 46 4ohm at 68 F Cool the main unit with a damp cloth or other means while welding When applying vacuum use the special service magnet and rotate at least 5 revolutions counterclockwise to fully open the electric expansion valve 1 Approx 46 4 ohm NOTE 1 If you have man...

Страница 77: ...ressure in the low pressure section is 5 MPa or more below the value in the performance charts 2 There is little condensation on the indoor heart exchanger which overall appears dry Distinguishing between refrigerant shortage and refrigerant circuit blockage If the pressure in the low pressure section does not change when the circuit is charged 2 to 3 times with refrigerant gas 0 44 lbs each time ...

Страница 78: ...back of motor rotation speed from the motor to the outdoor unit controller Trouble symptom 4 Fan motor rotation speed does not change during outdoor unit operation Trouble symptom 5 Fan motor rotation speed varies excessively during outdoor unit operation Remedy for symptom 3 to 5 It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble Therefore first...

Страница 79: ...e of a change in composition of the remaining refrigerant Therefore do not add new refrigerant Instead recover the remaining refrigerant with the refrigerant recovery unit Then after evacuation totally recharge the specified amount of refrigerant with the new refrigerant at its normal mixed composition state in liquid phase When refrigerant R410A is used the composition will differ depending on wh...

Страница 80: ...en R410A refrigerant is exposed to fire Therefore be sure to provide ample ventilation during installation work Caution in case of R410A leak Check for possible leak points with the special leak detector for R410A If a leak occurs inside the room immediately provide thorough ventilation A D Flare tool for R410A A D Conventional flare tool R22 Spacer 9 2 Checklist before Servicing Use a clutch type...

Страница 81: ...s which can be com monly used for R22 R407C and R410A CAUTION The above tools specifically for R410A must not be used for R22 and R407C Doing so will cause malfunction of the unit For the above vacuum pump 1 2 and vacuum pump adapter 3 those for R22 type units can be used for R410A type However they must be used exclusively for R410A and never alternately with R22 and R407C For details on tubing i...

Страница 82: ...t quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged if...

Страница 83: ...use an electronic scale for charging refrigerant In this case if the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the charging cylinder is less than 20 Also charge the minimum necessary amount to the charging cylinder before using it to charge the air condi...

Страница 84: ...lux and wax for R410A Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum pump s...

Страница 85: ...R410A for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 9 8 2 Use of Existing Tubing If replacing an older unit that used refrigerant R22 with a R410A unit do not use its existing tubing Instead completely new tubing must be used CAUTION Never charge additional refrigerant if refrigerant is leaking from the unit Follo...

Страница 86: ...INSTALLATION INSTRUCTIONS CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU 852 6 4190 581 00 1 APPENDIX A A 1 ...

Страница 87: ...se of the Flaring Method 3 3 Flaring Procedure with a Flare Tool 3 4 Caution before Connecting Tubes Tightly 3 5 Tubing Connections 3 6 Insulation of Refrigerant Tubing 3 7 Taping the Tubes 3 8 Finishing the Installation 4 AIR PURGING 19 Air Purging with a Vacuum Pump for Test Run Pump Down 5 WIRING INSTRUCTIONS 22 5 1 General Precautions on Wiring 5 2 Recommended Wire Length and Diameter 5 3 Wiri...

Страница 88: ...U heating at connection points and a possible fire hazard 7R SUHYHQW SRVVLEOH KD DUGV IURP LQVXODWLRQ IDLOXUH the unit must be grounded When Transporting Be careful when picking up and moving the indoor and out door units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin alu minum fins on the air conditioner can cut your fingers When Installin...

Страница 89: ...raps or bits of wiring have been left inside the unit being serviced Others 9HQWLODWH DQ HQFORVHG DUHDV ZKHQ LQVWDOOLQJ RU WHVWLQJ the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas RQILUP XSRQ FRPSOHWLQJ LQVWDOODWLRQ WKDW QR UHIULJHUDQW gas is leaking If escaped gas comes in contact with a stove gas water heater electric room heater or ...

Страница 90: ...ty Parts Figure Q ty CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU 2 1 A B C D Reducer 1 2 3 8 CAUTION Check local electrical codes and regulations before obtaining wire Also check any specified instructions or limitations Model Narrow Tube Wide Tube Outer Dia Thickness Outer Dia Thickness CS MKS7NKU CS MKS9NKU CS MKS12NKU 1 4 6 35 mm 0 0314 0 8 mm 3 8 9 52 mm 0 0314 0 8 mm CS MKS18NKU 1 4 6 35 mm 0 0314 0 ...

Страница 91: ...t Fig 2a or 2b install the unit within the maximum elevation difference H1 H2 H3 H4 above or below the outdoor unit and within a total tubing length L1 L2 L3 L1 L2 L3 L4 from the outdoor unit as detailed in Table 3 and Fig 3a Drain hose Indoor unit Outside drainage Fig 1 2 5 cm min 6 15 cm min Front View 2 5 cm min Fig 2a For wall mounted units For ceiling mounted cassette units INDOOR UNIT 1 INDO...

Страница 92: ...al refrigerant R410A by 0 22 oz ft No additional charge of compressor oil is necessary For more detailed charging information refer to the Technical Service Manual Max Max Allowable Total Limit of Limit of Elevation Required Amount Allowable Tubing Length Total Tubing Length Difference of Additional Model Tubing Length at Shipment L1 L2 L3 or H1 H2 H3 H4 Refrigerant Per Unit L1 L2 L3 or L1 L2 L3 L...

Страница 93: ...8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm Union 3 8 9 52mm Flare 1 2 12 70mm CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 1 2 12 70mm 3 8 9 52mm 1 4 6 35mm 1 2 12 70mm 3 8 9 52mm Supplied Reducer 2 Connecting indoor unit for CU 4KS24NBU 1 Connecting indoor unit for CU 3KS19NBU Fig 4a 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 ...

Страница 94: ...1 2 12 70mm 3 8 9 52mm CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm A CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm CS MKS18NKU CS KS18NB4UW 1 2 12 70mm 1 2 12 70mm 1 4 6 35mm C Fig 4e Union 5 8 15 88mm Flare 1 2 12 70mm 1 2 12 70mm 5 8 15 88mm Locally purchased C B CS MKS7NKU CS MKS9NKU CS MKS1...

Страница 95: ...2 12 70mm 1 2 12 70mm 3 8 9 52mm Supplied Reducer A Outdoor unit Indoor unit CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm B CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm C CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 1 2 12 70mm 3 8 9 52mm 1 4 6 35mm D CS MKS18NKU CS KS18NB4UW 1 2 12 70mm 1 2...

Страница 96: ...S12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm B CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm E Fig 4k Union 5 8 15 88mm Flare 1 2 12 70mm 1 2 12 70mm 5 8 15 88mm Locally purchased B CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U A Outdoor unit Indoor unit CS MKS7NKU CS MKS9NKU CS MKS12NKU CS MKS9NB4U CS MKS12NB4U 3 8 9 52m...

Страница 97: ... to use baffle plates When the outdoor unit is installed in a position exposed to strong wind such as seasonal winds with low air tempera ture in winter baffle plates must be installed on the outdoor unit Fig 5f This unit is designed so that the fan of the outdoor unit runs at low speed when the air conditioner is operated at low outdoor air temperatures When the outdoor unit is exposed to strong ...

Страница 98: ...7 5 10 150 20 20 CU 4KS31NBU inch 25 3 16 25 32 1 3 8 30 29 32 13 25 32 13 25 32 25 64 25 32 19 32 31 25 32 19 64 25 64 5 29 32 25 32 25 32 mm 640 20 35 785 350 350 10 20 15 807 7 5 10 150 20 20 Dimensions A B C D E F G H I J K Model inch 22 1 16 23 1 32 13 25 32 5 29 32 19 9 32 1 3 8 2 5 32 18 5 16 2 3 8 3 11 32 31 32 mm 560 585 350 150 490 35 55 465 60 85 25 Air Intake Baffle Air Discharge Baffl...

Страница 99: ...op 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 3 Recommended bolts to be used are 15 64 M6 ISO standard and the recommended length of the bolts is between 13 32 19 32 inch 10 15 mm 4 Use washers and spring washers to tightly fasten the windbaffle to the unit 4 Precautions for ins...

Страница 100: ...27 32 2 3 4 4 7 16 2 15 16 2 3 4 Service valve on narrow tube side Outer diameter 1 4 6 35 Service valve on wide tube side Outer diameter 3 8 9 52 Service valve on wide tube side Outer diameter 1 2 12 70 A 23 32 Fig 6c 23 15 16 15 32 12 19 32 13 19 32 14 17 32 5 11 32 35 7 16 900 23 32 35 1 32 890 2 29 32 2 1 16 1 13 16 2 13 32 4 1 2 2 1 32 4 7 16 5 29 32 2 15 16 2 27 32 2 3 4 2 3 4 A Service valv...

Страница 101: ...rmance Install in a location where the dimensions indicated by are ensured and where 2 or more faces of the unit are unobstructed In principle the top direction should be unobstructed Indoor unit D Wall mounted types Ceiling mounted cassette types Indoor unit C Indoor unit B Indoor unit A Indoor unit D Indoor unit C Indoor unit B Indoor unit A Service space Power breaker Ground wire not provided E...

Страница 102: ...ot allow the wire ends to come in contact with rainwater or be subject to dew condensation Deburring Before After Fig 8 3 2 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 3 3 Flaring ...

Страница 103: ...other then screw in the flare nut lightly at first to obtain a smooth match Fig 13 3 5 Tubing Connections a Temporary connection Screw in 3 5 turns by hand Fig 14 b To fasten the flare nuts apply specified torque as Table 4 NOTE NOTE Reamer Copper tubing Fig 9 Flare tool Flare nut Copper tubing Fig 11 Fig 10 Apply refrigerant lubricant here and here Fig 12 Flare nut Union Fig 13 0 to 0 0196 0 to 0...

Страница 104: ... material The material used for insulation must have good insulation characteristics be easy to use be age resistant and must not easily absorb moisture IMPORTANT Indoor unit Outdoor unit Spanner Torque wrench Fig 15 Insulation Min 5 16 8 mm Thickness min 5 16 8 mm Fig 16 Insulation Fig 17a CAUTION Be sure to match refrigerant tubing and electric wiring between indoor and outdoor units Fig 17b Fig...

Страница 105: ...r R410A High pressure valve Manifold gauge special for R410A Low pressure valve Leave the valve open Open Charging hose special for R410A Hex wrench With push pin Hi Lo 3 7 Taping the Tubes 1 At this time the 2 refrigerant tubes and electrical wire if local codes permit should be taped together with armoring tape The drain hose may also be included and taped together as 1 bundle with the tubing 2 ...

Страница 106: ...erclockwise to fully open the valve 8 Turn the narrow tube service valve stem counter clockwise to fully open the valve 9 Loosen the vacuum hose connected to the wide tube service port slightly to release the pressure Then remove the hose 10 Leak test all joints at the tubing both indoor and outdoors with liquid soap Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth CAUTION B...

Страница 107: ...onnect the manifold gauge and the inter unit tubes and attach the caps and flare nuts At this point pump down is com pleted If the caps and flare nuts are not reattached there is the danger of gas leakage Refer to Fig 24 If pump down is not possible If the air conditioner cannot be operated because of a malfunction or other cause use a refrigerant recovery device to recover the refrigerant In orde...

Страница 108: ...e internal wiring can be very dangerous The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes 5 2 Recommended Wire Length and Diameter 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 car ryin...

Страница 109: ...grounds and do not have it shared with other electric appliances WARNING Fig 25a Fig 25b 4 indoor units with CU 4KS24NBU CU 4KS31NBU 1 2 3 Terminal INDOOR UNIT 1 2 3 INDOOR UNIT 1 2 3 1 UNIT B 2 3 4 UNIT C 5 6 7 8 9 1 2 Terminal Terminal L1 L2 INDOOR UNIT UNIT A A B C Terminal 2P Terminal 9P OUTDOOR UNIT Disconnect switch 230 208V 230 208V 230 208V 230 208V 230 208V 230 208V 230 208V 230 208V 230 ...

Страница 110: ...Shape the loop wire properly place it on the termi nal plate and fix it securely with the removed termi nal screw using a screwdriver 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 28 and 29 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using a ring...

Страница 111: ... unit refrigerant tubing that is connected to service valve B second from the bottom of the outdoor unit B is the indoor unit with Indoor unit C refrigerant tubing that is connected to service valve C third from the bottom of the outdoor unit C is the indoor unit with Indoor unit D refrigerant tubing that is connected to service valve D top of the outdoor unit D is the indoor unit with 1 2 1 2 3 4...

Страница 112: ... plate Make sure there is no gap between access panel C and the conduit plate Access panel C CAUTION 6 Test Run Performing a test run Refer to the test run procedures in the indoor unit installation manual Perform the test run separately for each connected indoor unit If 2 units are operated simultaneously it is not possible to correctly check for errors in tubing and wiring Checking tubing and wi...

Страница 113: ... unit cables are securely fastened to the terminal board Inter unit cables are securely fixed The power cable and inter unit cables are not connected anywhere along their paths The ground wire is securely connected An air purge of the refrigerant circuit has been conducted A leak test of the tubing connections has been performed Thermal insulation has been applied to the tubing connections Drain c...

Страница 114: ...DC1111 0 ...

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