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IMPORTANT

These air conditioners employ new
refrigerant R410A.

Pay special attention when
servicing the unit.

●

Wall mounted type

KMHS0772
KMHS0972
KMHS1272
KMHS1872
KMHS2472

< Applicable Indoor Units >

TECHNICAL & SERVICE MANUAL

OUTDOOR UNIT : CMH1972

CMH2472
CMH3172

DC INVERTER MULTI-SYSTEM AIR CONDITIONER

FILE NO.

Destination: North America

Product Code No.

1 852 330 30

1 852 330 31

1 852 330 32

REFERENCE NO.

700660-04

Capacity at 230V

19,100 BTU/h

23,200 BTU/h

30,600 BTU/h

Outdoor Model No.

CMH1972

CMH2472

CMH3172

NOTE

CMH1972

CMH2472

CMH3172

For details about the combination, refer to
"Unit Combination Table" in the Appendix
of this manual.

Содержание CMH1972

Страница 1: ...UAL OUTDOOR UNIT CMH1972 CMH2472 CMH3172 DC INVERTER MULTI SYSTEM AIR CONDITIONER FILE NO Destination North America Product Code No 1 852 330 30 1 852 330 31 1 852 330 32 REFERENCE NO SM700660 04 Capacity at 230V 19 100 BTU h 23 200 BTU h 30 600 BTU h Outdoor Model No CMH1972 CMH2472 CMH3172 NOTE CMH1972 CMH2472 CMH3172 For details about the combination refer to Unit Combination Table in the Appen...

Страница 2: ...on especially a damp or humid location If a leakage breaker is not installed electric shock can occur When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the...

Страница 3: ...anation of Functions 7 2 Protective Functions 8 TROUBLESHOOTING 8 1 Precautions before Performing Inspection or Repair 8 2 Trouble Diagnosis by Error Monitop Lamps 8 3 Checking the Outdoor System 8 4 Trouble Diagnosis of Each Part 8 5 Trouble Diagnosis of Fan Motor 9 REFRIGERANT R410A SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9 1 Characteristics of New Refrigerant R410A 9 2 Checklist before Servicin...

Страница 4: ...172 Multi Outdoor Unit Indoor Unit 3 Room 4 Room 4 Room KMHS0772 YES YES YES YES YES YES YES YES YES YES YES YES NO YES YES KMHS0972 KMHS1272 KMHS1872 KMHS2472 NOTE The table lists the wall mounted type of indoor units as representative models 4 ...

Страница 5: ...67 F D B 57 F W B 80 F D B 67 F W B _ D B _ W B 1 OPERATING RANGE Maximum Minimum Maximum Minimum 115 F D B 67 F D B 75 F D B 65 F W B 0 F D B Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Heating 5 ...

Страница 6: ...19 32 1 4 6 35 3 3 8 9 52 3 ft m Max allowable tubing length per unit Flare Type 82 25 R410A 6 17 2 800 Electric Expansion Valve DC Twin Rotary Inverter dB A Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 98 98 A 14 5 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 13 3 Room Multi Outdoor...

Страница 7: ... 9 52 3 ft m 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 Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 98 98 A 14 5 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 13 3 Room Multi Outdoor Unit Type 3 Number of Co...

Страница 8: ... ft m 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 Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 98 98 A 14 5 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 13 4 Room Multi Outdoor Unit Type 4 Number of Connectab...

Страница 9: ... 3 1 2 12 7 1 ft m 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 Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 98 98 A 14 5 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 13 4 Room Multi Outdoor Unit Type 4 Number...

Страница 10: ...2 1 2 12 7 2 ft m Max allowable tubing length per unit Flare Type 100 30 5 R410A 8 38 3 800 Electric Expansion Valve DC Twin Rotary Inverter Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 99 99 A 17 0 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 16 4 Room Multi Outdoor Unit Type 4 Numb...

Страница 11: ...2 1 2 12 7 2 ft m Max allowable tubing length per uint Flare Type 100 30 5 R410A 8 38 3 800 Electric Expansion Valve DC Twin Rotary Inverter Fan Speeds Auto Hi Me Lo Control Microprocessor Features Outdoor Unit HSPF Compressor Locked Rotor Amperes BTU Wh BTU h Performance 7 7 Power Factor 99 99 A 17 0 Voltage Rating BTU h kW Total Capacity BTU h SEER BTU Wh 16 4 Room Multi Outdoor Unit Type 4 Numb...

Страница 12: ...ompressor 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 7LN115 Model Operation Temp Open 239 F 115 C Close 212 F 100 C 230V 30...

Страница 13: ...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 7LN115 Model Operation Temp Open 239 F 115 C Close 212 F 100 C...

Страница 14: ...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 7LN115 Model Operation Temp Open 239 F 115 C Close 212 F 100 C...

Страница 15: ... F C 2 3 Other Component Specifications CMH1972 CMH2472 CMH3172 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 16: ... 1 4 6 35 3 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 5 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 3 DIMENSIONAL DATA Outdoor Unit CMH1972 Unit inch mm 16 ...

Страница 17: ... service valve dia 1 2 12 70 1 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 5 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 2 13 32 Outdoor Unit CMH2472 Unit inch mm 17 ...

Страница 18: ...e service valve dia 1 2 12 70 2 4 7 16 5 29 32 2 7 8 2 3 4 2 3 4 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 5 I D 1 5 1 6 1 3 8 2 15 16 2 1 16 2 13 32 Outdoor Unit CMH3172 Unit inch mm 18 ...

Страница 19: ...Diagram Outdoor Unit CMH1972 Insulation 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 in...

Страница 20: ...ation 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 Thickness Min 5 16 8 mm Insulation Narrow tube Thickness Min 5 16 8 mm IMPORTANT CAUTION Compressor Main accumulator Sub accumulator Service valve on narrow tube Electric expansion valve Service valve on wide tube DN CN BN AN DW CW BW AW...

Страница 21: ...tube Narrow tube Outdoor Unit CMH3172 Insulation 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 ha...

Страница 22: ...188 1 3 160 1 1 146 1 0 77 25 86 30 95 35 104 40 23 5 32 0 41 5 50 10 59 15 68 20 77 25 23 5 32 0 41 5 50 10 59 15 68 20 77 25 23 5 32 0 41 5 50 10 59 15 68 20 77 25 Lo fan Hi fan HH fan 506 3 5 434 3 0 362 2 5 290 2 0 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 4 5 3 2 Lo fan Hi fan HH fan 7 8 6 5 Indoor discharge air temperature F C Indoor disc...

Страница 23: ...nt A Operating current A Outdoor air temperature F C Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan 7 8 6 5 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CMH1972 Indoor Unit KMHS0972 1 HH fan HH fan HH fan 174 1 2 188 1 3 160 1 1 146 1 0 77 25 86 30 95 35 104 40 23 5 32 0 41 5 50 10 59...

Страница 24: ...utdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan 506 3 5 578 4 0 434 3 0 362 2 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan 7 9 3 5 8 10 4 6 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan HH fan HH fan HH fan...

Страница 25: ... 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan 506 3 5 578 4 0 434 3 0 362 2 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 7 8 6 5 Lo fan Hi fan 10 12 6 8 9 11 7 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CMH1972 Indoor Unit KMHS1872 1 HH...

Страница 26: ... 1 0 77 25 86 30 95 35 104 40 23 5 32 0 41 5 50 10 59 15 68 20 77 25 23 5 32 0 41 5 50 10 59 15 68 20 77 25 23 5 32 0 41 5 50 10 59 15 68 20 77 25 Lo fan Hi fan HH fan 506 3 5 434 3 0 362 2 5 290 2 0 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 4 5 3 2 Lo fan Hi fan HH fan 7 8 6 5 Indoor discharge air temperature F C Indoor discharge air temperatu...

Страница 27: ...t A Operating current A Outdoor air temperature F C Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan 7 8 6 5 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CMH2472 Indoor Unit KMHS0972 1 HH fan HH fan HH fan 174 1 2 188 1 3 160 1 1 146 1 0 77 25 86 30 95 35 104 40 23 5 32 0 41 5 50 10 59 ...

Страница 28: ...ure F C Outdoor air temperature F C Lo fan Hi fan 506 3 5 578 4 0 434 3 0 362 2 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 5 6 4 3 Lo fan Hi fan 7 9 3 5 8 10 4 6 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor 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 14...

Страница 29: ...4 1 2 146 1 0 132 0 9 Lo fan Hi fan 506 3 5 578 4 0 434 3 0 362 2 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 7 8 6 5 Lo fan Hi fan 10 12 6 8 9 11 7 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CMH2472 Indoor Unit KMHS1872 1 HH fan HH...

Страница 30: ...160 1 1 174 1 2 146 1 0 132 0 9 Lo fan Hi fan 506 3 5 578 4 0 434 3 0 362 2 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 8 9 7 6 Lo fan Hi fan 12 14 8 10 11 13 9 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Lo fan Hi fan Outdoor Unit CMH2472 Indoor Unit KMHS2472...

Страница 31: ...8 90 0 6 Lo fan Hi fan Hi fan HH fan 434 3 0 506 3 5 362 2 5 290 2 0 218 1 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 4 5 3 8 9 7 6 5 4 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Outdoor Unit CMH3172 Indoor Unit KMHS0772 1 5 1 3 Temperature Charts CMH3172 Lo...

Страница 32: ...1 0 174 1 2 118 0 8 90 0 6 Lo fan Hi fan Hi fan HH fan 434 3 0 506 3 5 362 2 5 290 2 0 218 1 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 4 5 3 7 8 6 5 4 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Outdoor Unit CMH3172 Indoor Unit KMHS0972 1 Lo fan Hi fan Hi fa...

Страница 33: ...an HH fan 434 3 0 506 3 5 362 2 5 290 2 0 218 1 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 4 5 6 3 12 13 10 11 9 8 7 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Outdoor Unit CMH3172 Indoor Unit KMHS1272 1 Lo fan Hi fan Hi fan HH fan Lo fan Hi fan Hi fan HH fa...

Страница 34: ...rature F C Lo fan Hi fan 434 3 0 506 3 5 362 2 5 290 2 0 218 1 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 6 5 7 8 9 4 14 12 13 11 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Outdoor Unit CMH3172 Indoor Unit KMHS1872 1 Lo fan Hi fan Lo fan Hi fan 77 25 86 30 9...

Страница 35: ... temperature F C Lo fan Hi fan 434 3 0 506 3 5 362 2 5 290 2 0 218 1 5 Operating current A Operating current A Outdoor air temperature F C Outdoor air temperature F C 9 8 10 11 12 14 12 13 11 Indoor discharge air temperature F C Indoor discharge air temperature F C Outdoor air temperature F C Outdoor air temperature F C Outdoor Unit CMH3172 Indoor Unit KMHS2472 1 Lo fan Hi fan Lo fan Hi fan 77 25 ...

Страница 36: ...6 350 15 440 TC 20 150 19 450 18 700 18 140 17 250 16 290 72 22 2 SHC 14 040 13 700 13 360 13 190 12 840 12 330 63 76 24 4 SHC 16 960 16 610 16 270 16 100 15 760 15 410 17 2 80 26 7 SHC 20 040 19 450 18 700 18 140 17 250 16 290 84 28 9 SHC 20 150 19 450 18 700 18 140 17 250 16 290 88 31 1 SHC 20 150 19 450 18 700 18 140 17 250 16 290 TC 21 140 20 420 19 640 19 100 18 180 17 180 72 22 2 SHC 10 610 ...

Страница 37: ... 24 490 23 650 22 730 22 140 21 050 15 980 72 22 2 SHC 15 760 15 410 15 070 14 730 14 390 12 330 63 76 24 4 SHC 18 840 18 330 17 990 17 810 17 300 15 240 17 2 80 26 7 SHC 21 930 21 590 21 070 20 900 20 390 15 980 84 28 9 SHC 24 490 23 650 22 730 22 140 21 050 15 980 88 31 1 SHC 24 490 23 650 22 730 22 140 21 050 15 980 TC 25 560 24 700 23 760 23 200 22 080 16 380 72 22 2 SHC 12 330 11 990 11 640 1...

Страница 38: ... 490 31 280 29 960 29 310 23 400 16 970 72 22 2 SHC 21 010 20 550 19 870 19 640 17 120 14 610 63 76 24 4 SHC 24 900 24 440 23 980 23 520 21 240 16 970 17 2 80 26 7 SHC 29 010 28 550 28 100 27 640 23 400 16 970 84 28 9 SHC 32 490 31 280 29 960 29 310 23 400 16 970 88 31 1 SHC 32 490 31 280 29 960 29 310 23 400 16 970 TC 33 790 32 540 31 170 30 600 23 770 17 200 72 22 2 SHC 16 440 15 980 15 290 15 0...

Страница 39: ...4 800 BTU h AIR FLOW RATE 847 CFM OUTDOOR INDOOR ENT TEMP F C AMBIENT TEMP F C W B 60 65 70 75 80 15 6 18 3 21 1 23 9 26 7 0 17 8 TH 13 820 13 790 13 750 13 710 13 660 3 16 1 TH 14 280 14 250 14 220 14 170 14 120 8 13 3 TH 15 390 15 360 15 320 15 280 15 220 13 10 6 TH 16 540 16 510 16 470 16 420 16 360 18 7 8 TH 17 810 17 780 17 740 17 680 17 620 23 5 0 TH 19 150 19 110 19 070 19 010 18 930 28 2 2...

Страница 40: ...h AIR FLOW RATE 847 CFM OUTDOOR INDOOR ENT TEMP F C AMBIENT TEMP F C W B 60 65 70 75 80 15 6 18 3 21 1 23 9 26 7 0 17 8 TH 16 550 16 540 16 510 16 470 16 420 3 16 1 TH 17 100 17 080 17 050 17 010 16 960 8 13 3 TH 18 390 18 370 18 340 18 300 18 250 13 10 6 TH 19 730 19 710 19 680 19 640 19 580 18 7 8 TH 21 200 21 180 21 150 21 100 21 040 23 5 0 TH 22 740 22 720 22 680 22 630 22 570 28 2 2 TH 24 330...

Страница 41: ... AIR FLOW RATE 1 130 CFM OUTDOOR INDOOR ENT TEMP F C AMBIENT TEMP F C W B 60 65 70 75 80 15 6 18 3 21 1 23 9 26 7 0 17 8 TH 18 270 18 260 18 230 18 200 18 150 3 16 1 TH 18 860 18 850 18 820 18 790 18 740 8 13 3 TH 20 260 20 250 20 230 20 200 20 150 13 10 6 TH 21 720 21 710 21 680 21 650 21 600 18 7 8 TH 23 310 23 300 23 280 23 240 23 190 23 5 0 TH 24 970 24 960 24 940 24 910 24 850 28 2 2 TH 26 69...

Страница 42: ...YEL E W GRN YEL 6 1 4 5 BLK BLK BLK GND BLK RELAY TERMINAL PLATE TERMINAL PLATE W W 1 2 1 2 3 4 5 6 7 8 9 L2 POWER SUPPLY L1 FERRITE CORE WHT WHT BLK RED BLU BLK WHT BLK WHT GND A INDDOR UNIT B INDDOR UNIT TO INDDOR UNIT C INDDOR UNIT 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG MV1 MAGNETIC COIL MV1 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG BLK 1 1 1 WHT 2 2 2 RED...

Страница 43: ...LATE W W 1 2 1 2 3 4 5 6 7 8 9 10 11 12 L2 POWER SUPPLY L1 FERRITE CORE WHT WHT BLK RED BLU BLK WHT WHT WHT GND A INDDOR UNIT B INDDOR UNIT TO INDDOR UNIT C INDDOR UNIT D INDDOR UNIT 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG MV1 MAGNETIC COIL MV1 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG BLK 1 1 1 WHT 2 2 2 RED 3 3 3 BLU 4 4 4 KS22 CN02 BLK 1 1 1 WHT 2 2 2 RED 3...

Страница 44: ...TE TERMINAL PLATE W W 1 2 1 2 3 4 5 6 7 8 9 10 11 12 L2 POWER SUPPLY L1 WHT WHT BLK RED BLU BLK WHT WHT WHT GND A INDDOR UNIT B INDDOR UNIT TO INDDOR UNIT C INDDOR UNIT D INDDOR UNIT 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG MV1 MAGNETIC COIL MV1 5 5 5 4 4 3 3 2 2 1 1 5 4 4 3 3 2 2 1 1 GRY BLK YEL RED ORG BLK 1 1 1 WHT 2 2 2 RED 3 3 3 BLU 4 4 4 KS22 CN02 BLK 1 1 1 WHT 2 2 2 RED 3...

Страница 45: ... indoor and outdoor temperatures are high the current peak cut off activates stopping any increases in frequency The frequency then increases The thermostat turns OFF The outdoor unit stops It does not stop if the thermostat for another indoor unit is ON Approximately 30 seconds after the thermostat turns OFF the indoor fan is stopped The indoor fan is stopped The indoor and outdoor temperatures a...

Страница 46: ... until it reaches the set speed STOP Clean defrost Defrost is performed when the outdoor unit is stopped and the temperature of the outdoor unit coil is at or below the L1 line Refer to Fig 1 All indicator lamps turn OFF The indoor and outdoor units stop The operating frequency during defrost is 80 Hz Frequency is lowered if the current peak cut off function is activated The maximum length of a si...

Страница 47: ...ditions 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 All indicator lamps turn OFF The indoor and outdoor units stop Freeze prevention...

Страница 48: ... 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 and LL very low over a 6 minute cycle This is 1 f fluctuation fan operation Refer t...

Страница 49: ...1 f fluctuation fan 250 200 6 minute cycle Fig 2 150 100 Step 50 0 49 ...

Страница 50: ...AT operation Compressor Outdoor fan Solenoid valve for hot gas bypass Temperature of the outdoor heat exchanger is at or above the temperature shown in the table below Temperature of releasing 1 The temperature for releasing of defrosting is 68 F or higher when the outdoor air temperature is less than 32 F Defrost operation time Defrost operation has continued for 12 minutes max length Indoor fan ...

Страница 51: ... Frequency Hz Trip Hz reduction Hz increase prohibit Hz reduction Hz increase prohibit Hz reduction Hz increase prohibit 16 15 6 0 30 Example of operation during cooling Frequency Frequency Current Stops operation Approx 3 minutes Power Point C Point B Point A 20A 17A 16 6A Target frequency Operates at the target frequency at Point A and below Stops increases to the frequency between Points A and ...

Страница 52: ...ip 5Hz every 30 sec reduction 2Hz every 30 sec reduction No control Increase 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 flick...

Страница 53: ...n 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 there might b...

Страница 54: ... the nature of the trouble Heat Exchanger Rear side P C Board of Electrical Component Box Error Monitor Lamps Front 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 t...

Страница 55: ...e outdoor coil temperature sensor connector Non stop defrost The maximum length of defrost operation is 12 minutes Defrost can also be released based on the below conditions for the outdoor heat exchanger sensor 1 However the condition is 68 F or higher when the outdoor air temperature is below 32 F Less than 2 minutes Not released 2 minutes or more 57 2 F or higher 1 No 1 Check items unit operati...

Страница 56: ...r fan motor 4 way valve Coil thermistor Electric expansion valve Branch tubing temperature sensor 1 2 3 4 5 6 7 8 Operation lamp blinking Operation lamp does not illuminate Indoor fan dose not turn Outdoor unit does not operate Outdoor fan dose not turn 4 way valve does not operate The compressor only does not operate The compressor stops on occasion The compressor speed does not increase The outd...

Страница 57: ... Inspection Points for Each part Others 8 4 2 Inspection Points for Each Part 1 Outdoor control circuit board Refer to 8 3 1 Checking the outdoor unit 2 Fuse Check it visually or the continuity with a tester 3 Compressor Check for an open circuit in the compressor coil winding 4 Compressor protective sensor compressor discharge temperature thermistor Check that the senseor is securely contained in...

Страница 58: ...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 Use the special service magnet and rotate 5 re...

Страница 59: ...pressure 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 60: ...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 61: ...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 62: ...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 63: ...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 64: ...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 65: ...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 66: ...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 67: ...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 68: ...INSTALLATION INSTRUCTIONS CMH1972 CMH2472 CMH3172 II 852 6 4189 993 00 2 APPENDIX A A 1 ...

Страница 69: ...re Length and Diameter 5 3 Wiring System Diagram 5 4 How to Connect Wiring to the Terminal 5 5 Wiring Instructions for the Outdoor Unit 6 TEST RUN 23 7 CONNECTING A HOME AUTOMATION DEVICE 24 8 INSTALLATION CHECK SHEET 24 85264189993002 SANYO 2007 SANYO Commercial Solutions In Canada A Division of SANYO North America Corporation SANYO Canada Inc Cornerstone Business Park 1 300 Applewood Crescent Co...

Страница 70: ...n 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 Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal frame to provide ad...

Страница 71: ...hese materials separately from a local source you will need 1 Deoxidized annealed copper tube for refrigerant tub ing as detailed in Table 2 Cut each tube to the appropriate lengths 1 to 1 4 30 cm to 40 cm to dampen vibration between units Table 2 2 Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing Wall thickness of the insulation should be not l...

Страница 72: ...tion that will hold the weight of the unit G select a location where tubing and drain hose have the shortest run to the outside Fig 1 G allow room for operation and maintenance as well as unrestricted air flow around the unit Fig 2 G 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 ou...

Страница 73: ...additional 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...

Страница 74: ... Reducer C B A KMHS0772 KMHS0972 KMHS1272 KMHS0772 KMHS0972 KMHS1272 D Outdoor unit Indoor unit KMHS0772 KMHS0972 KMHS1272 KMHS0772 KMHS0972 KMHS1272 1 2 12 70mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 2 Connecting indoor unit for CMH2472 A 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...

Страница 75: ... unit Indoor unit KMHS0772 KMHS0972 KMHS1272 KMHS2472 Union 1 2 12 70mm Flare 3 8 9 52mm 3 8 9 52mm 1 2 12 70mm Locally purchased 1 2 12 70mm 1 2 12 70mm 5 8 15 88mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 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 A KMHS0772 KMHS0972 KMHS1272 KMHS0772 KMHS09...

Страница 76: ...172 B Fig 4h Union 3 8 9 52mm Flare 1 2 12 70mm 1 2 12 70mm 3 8 9 52mm Supplied Reducer C B A KMHS0772 KMHS0972 KMHS1272 KMHS0772 KMHS0972 KMHS1272 D Outdoor unit Indoor unit KMHS0772 KMHS0972 KMHS1272 KMHS1872 1 2 12 70mm 1 2 12 70mm 1 2 12 70mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm 1 4 6 35mm C Fig 4i C B A KMHS1872 KMHS0772 KMHS0972 KMHS1272 D O...

Страница 77: ...lied Reducer 1 2 12 70mm 1 2 12 70mm 5 8 15 88mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 3 8 9 52mm 1 4 6 35mm 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 C B A KMHS1872 KMHS0772 KMHS0972 KMHS1272 D Outdoor unit Indoor unit KMHS0772 KMHS0972 KMHS1272 KMHS2472 1 2 12 70mm 1 2 12 70mm 5 8 15 88mm 3 8 9 52mm 3 8 9 52mm 1 ...

Страница 78: ...e Figs 5c and 5d G Install cushion rubber under unit s feet to reduce vibration and noise Fig 5e G use lug bolts or equal to bolt down unit reducing vibration and noise G Install in a location where no antenna of a television or radio exists within 10 3 m Outdoor unit Hot air Heat source Exhaust fan NO Fig 5a Fig 5b Fig 5d Air intake Min 6 15 cm Air discharge Min 4 10 cm Min 1 8 50 cm Valve side M...

Страница 79: ...2 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 va...

Страница 80: ...e spaces that are required in order to maintain performance 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 C Indoor unit B Indoor unit A Indoor unit D Service space Power breaker Ground wire not provided Ensure 6 15cm of space if a drain hose is to be used B...

Страница 81: ... faults do not allow the wire ends to contact 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 P...

Страница 82: ...re tube straight with each 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 rotations 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 ...

Страница 83: ... every 47 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the con densation drain hose splits away from the bundle and drips clear of the unit and the tubing 3 8 Finishing the Installation After finishing insulating and taping over the tubing use sealing putty to seal off the hole in the wall to prevent rain and draft from entering ...

Страница 84: ...ll wiring for the test run has been completed Note that both narrow and wide tube service valves on the outdoor unit are kept closed at this stage 2 Using an adjustable wrench or box wrench remove the valve caps from the service valve on both narrow and wide tubes 3 Connect a vacuum pump and a manifold valve with pressure gauges to the service port on the wide tube service valve Fig 20 Fig 20 Fig ...

Страница 85: ...hen apply the vacuum again 6 With a 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 again 7 With a standard screwdriver turn the wide tube service valve stem counterclockwise to fully open the valve 8 Turn the narrow tube service valve stem counter clockwise to fully open the valve...

Страница 86: ...lem 4 Disconnect 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 A C cannot be operated because of a malfunction or other cause use a refrigerant recovery device to recover the refrigerant In order ...

Страница 87: ... in the 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 ca...

Страница 88: ...away from other grounds and do not have it shared with other electric appliances WARNING Fig 25a Fig 25b 4 indoor units with CMH2472 CMH3172 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 2...

Страница 89: ...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 I 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 ri...

Страница 90: ...t is connected to service valve A top of the outdoor unit refrigerant tubing that is connected to service valve B top of the outdoor unit B is the indoor unit with refrigerant tubing that is connected to service valve C top of the outdoor unit C is the indoor unit with 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 5 6 7 8 9 10...

Страница 91: ...s in the indoor unit installation manual G 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 G If the room temperature is 59 F 15 C or below it may not be possible to check for tubing errors with cooling operation If this occurs perform heating operation for each unit individua...

Страница 92: ...cables are securely fastened to the terminal board Inter unit cables are securely fixed The power cord 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 connecti...

Страница 93: ...installed the returning fluid to the compressor may cause a malfunction NOTE List of Combination Tables Name of Combination Table 3 Room Outdoor Unit Combination Table 4 Room Outdoor Unit Combination Table 4 Room Outdoor Unit Combination Table Model No of Outdoor Unit CMH1972 CMH2472 CMH3172 Remarks OI 852 6 4180 821 00 4 OI 852 6 4180 822 00 5 OI 852 6 4180 805 00 4 A 2 ...

Страница 94: ... units concurrently may result in trouble At a time like this shut down at least one of the 3 indoor units to match one of the combinations found in the 2 room operation column of Table 1 In this case all the indoor units installed must not be operated concurrently under any circumstances Otherwise the air conditioner may not run properly and trouble may occur Be sure to operate the air conditioni...

Страница 95: ...0 11900 11900 23800 7800 24800 11900 17500 29400 7728 11372 19100 7100 19100 10129 14471 24600 8100 24800 7500 7500 7500 22500 6000 6000 6000 18000 8500 19100 7800 7800 7800 23400 9200 24800 7500 7500 9000 24000 5742 5742 6916 18400 9800 19100 6919 6919 9963 23800 10200 24800 7500 7500 11900 26900 5263 5263 8373 18900 9800 19100 6576 6578 11048 24200 10900 24800 7500 7500 17500 32500 4400 4400 103...

Страница 96: ...7800 24800 11900 17500 29400 7728 11372 19100 7100 19100 10129 14471 24600 8100 24800 7500 7500 7500 22500 6000 6000 6000 18000 8500 19100 7800 7800 7800 23400 9200 24800 7500 7500 9000 24000 5742 5742 6916 18400 9800 19100 6919 6919 9963 23800 10200 24800 7500 7500 11900 26900 5263 5263 8373 18900 9800 19100 6576 6576 11048 24200 10900 24800 7500 7500 17500 32500 4400 4400 10300 19100 9800 19100 ...

Страница 97: ...trouble At a time like this shut down at least one of the 4 indoor units to match one of the combinations found in the 3 room operation column of Table 1 4 Room Outdoor Unit Combination Table In this case all the indoor units installed must not be operated concurrently under any circumstances Otherwise the air conditioner may not run properly and trouble may occur CAUTION C x 2 200 K1 K2 23200 x 2...

Страница 98: ...0 23200 8467 8467 8467 25400 9200 29000 7500 7500 9000 24000 6990 6990 8420 22400 9800 23200 7907 7907 11386 27200 10200 29200 7500 7500 11900 26900 6405 6405 10190 23000 9800 23200 7663 7663 12874 28200 10900 29200 7500 7500 17500 32500 5345 5345 12511 23200 9800 23200 6636 6636 15927 29200 11600 29200 7500 9000 9000 25500 6688 8056 8056 22800 9800 23200 7371 10614 10614 28600 11600 29200 7500 90...

Страница 99: ...800 23200 6636 6636 15927 29200 11600 29200 7500 9000 9000 25500 6688 8056 8056 22800 9800 23200 7371 10614 10614 28600 11600 29200 7500 9000 11900 28400 6113 7363 9725 23200 9800 23200 7039 10136 11825 29000 11600 29200 7500 9000 17500 34000 5104 6148 11948 23200 9800 23200 6033 8688 14479 29200 11600 29200 7500 11900 11900 31300 5548 8826 8826 23200 9800 23200 6697 11251 11251 29200 11600 29200 ...

Страница 100: ... the combinations found in the 3 room operation column of Table 1 4 Room Outdoor Unit Combination Table In this case all the indoor units installed must not be operated concurrently under any circumstances Otherwise the air conditioner may not run properly and trouble may occur Be sure to operate the air conditioning system only when 2 or more indoor units have been installed If operated with only...

Страница 101: ...00 8220 9635 13745 31600 11600 32000 9000 11900 24200 45100 5827 7705 15668 29200 9800 30600 7034 8245 16721 32000 11600 32000 9000 17500 17500 44000 5973 11614 11614 29200 9800 30600 7366 12317 12317 32000 11600 32000 11900 11900 11900 35700 9267 9267 9267 27800 9800 29000 10333 10333 10333 31000 11600 32000 11900 11900 17500 41300 8414 8414 12373 29200 9800 30600 9280 9280 13239 31800 11600 3200...

Страница 102: ...5 30600 11600 32000 9000 11900 17500 38400 6469 8553 12578 27600 9800 27600 8220 9635 13745 31600 11600 32000 9000 11900 24200 45100 5508 7282 14810 27600 9800 27600 7034 8245 16721 32000 11600 32000 9000 17500 17500 44000 5645 10977 10977 27600 9800 27600 7366 12317 12317 32000 11600 32000 11900 11900 11900 35700 8467 8467 8467 25400 9800 27600 10333 10333 10333 31000 11600 32000 11900 11900 1750...

Страница 103: ...l Solutions A Division of SANYO North America Corporation Cornerstone Business Park 1062 Thorndale Avenue Bensenville IL 60106 U S A Sanyo Canada Inc 1 300 Applewood Crescent Concord Ontario L4K 5C7 CANADA Jan 2008 T ...

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