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Mitsubishi Heavy Industries SRRM25ZF-S, Technical Manual, Page: 2 / 127

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Mitsubishi Heavy Industries SRRM25ZF-S Technical Manual Download Page 2

CONTENTS

1

GENERAL INFORMATION ............................................................................... 1

1.1

Specific features ........................................................................................ 1

1.2

How to read the model name .................................................................... 1

2

SELECTION DATA ............................................................................................ 2

2.1

Specifications ............................................................................................. 2

2.2

Range of usage & limitations .................................................................. 25

2.3

Exterior dimensions ................................................................................. 26

2.4

Piping system ........................................................................................... 29

2.5

Selection chart ......................................................................................... 34

3

ELECTRICAL DATA ........................................................................................ 36

3.1

Electrical wiring ........................................................................................ 36

4

OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ................... 43

5

APPLICATION DATA ...................................................................................... 66

5.1

Installation of indoor unit ........................................................................ 67

5.2

Installation of remote control .................................................................. 76

5.3

Installation of outdoor unit ...................................................................... 77

5.4

Electrical wiring ........................................................................................ 78

5.5

Refrigerant piping .................................................................................... 79

5.6

Test run and handling instruction .......................................................... 81

5.7

Installation of remote control and super link adapter (SC-AD-E)

(Optional parts) ........................................................................................ 82

5.8

Installation of optional parts (Ducted type) ........................................... 89

6

MAINTENANCE DATA .................................................................................... 94

6.1

Trouble shooting ...................................................................................... 94

6.2

Servicing ................................................................................................. 108

7

REFRIGERANT PIPING INSTALLATION/SERVICING MANUAL

FOR AIR CONDITIONERS USING R410A ................................................... 109

7.1

Outline ..................................................................................................... 109

7.2

Refrigerant piping installation .............................................................. 110

7.3

Installation, removal and servicing ...................................................... 116

7.4

Refrigerant recovery .............................................................................. 121

Summary of Contents for SRRM25ZF-S

Page 1: ...Manual No 06 SCM T 052 INVERTER MULTI SPLIT SYSTEM ROOM AIR CONDITIONER Air to air heat pump type ...

Page 2: ...it 67 5 2 Installation of remote control 76 5 3 Installation of outdoor unit 77 5 4 Electrical wiring 78 5 5 Refrigerant piping 79 5 6 Test run and handling instruction 81 5 7 Installation of remote control and super link adapter SC AD E Optional parts 82 5 8 Installation of optional parts Ducted type 89 6 MAINTENANCE DATA 94 6 1 Trouble shooting 94 6 2 Servicing 108 7 REFRIGERANT PIPING INSTALLAT...

Page 3: ...he rotational speed of a compressor is changed in step in relation to varying load to interlock with the indoor and outdoor unit fans controlled to changes in frequency thus controlling the power Allowing quick heating cooling operation during start up period Constant room temperature by fine tuned control after the unit has stabilized 5 Fuzzy control Fuzzy control calculates the amount of variati...

Page 4: ...Safety equipment O D mm in φ 6 35 1 4 φ 9 52 3 8 Connecting method Flare connecting Attached length of piping Liquid line 0 4m Gas line 0 33m Insulation Necessary Both Liquid Gas lines Drain hose Connectable Accessories including Mounting kit Clean filter Natural enzyme filter 1 Photocatalytic washable deodorizing filter 1 Optional parts Outdoor unit to be combined SCM40 45 48 60 80ZF S 2 Capacity...

Page 5: ... Yellow HI POWER Green ECONO Orange Safety equipment O D mm in φ 6 35 1 4 φ 9 52 3 8 φ 12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line 0 4m Gas line 0 33m Insulation Necessary Both Liquid Gas lines Drain hose Connectable Accessories including Mounting kit Clean filter Natural enzyme filter 1 Photocatalytic washable deodorizing filter 1 Optional parts Outdoor unit ...

Page 6: ...ty equipment O D mm in φ 6 35 1 4 φ 9 52 3 8 φ 12 7 1 2 Connecting method Flare connecting Attached length of piping Insulation Necessary Both Liquid Gas lines Drain hose Connectable Accessories including Mounting kit Optional parts Wired remote control Outdoor unit to be combined SCM40 45 48 60 80ZF S SCM45 48 60 80ZF S SCM60 80ZF S Models STM25ZF S 35ZF S 50ZF S 60ZF S 2 Capacity indicated is th...

Page 7: ...ECONO Orange Safety equipment O D mm in φ 6 35 1 4 φ 9 52 3 8 φ 12 7 1 2 Connecting method Flare connecting Attached length of piping Insulation Necessary Both Liquid Gas lines Drain hose Connectable Accessories including Mounting kit Optional parts Wired remote control Outdoor unit to be combined SCM40 45 48 60 80ZF S SCM45 48 60 80ZF S SCM60 80ZF S 2 Capacity indicated is the rated capacity with...

Page 8: ...ressor Safety equipment Size Core Number mm in Liquid line φ 6 35 1 4 2 Gas line φ 9 52 3 8 2 Connecting method Flare connecting Attached length piping Insulation Necessary Both Liquid Gas lines Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cable 2 Connecting method Terminal block Screw fixing type Accessories included Installation sheet Manu...

Page 9: ...MM 42 Shock vibration absorber Rubber for compressor Safety equipment Size Core Number mm in Liquid line φ 6 35 1 4 3 Gas line φ 9 52 3 8 3 Connecting method Flare connecting Attached length piping Insulation Necessary Both Liquid Gas lines Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cable 3 Connecting method Terminal block Screw fixing typ...

Page 10: ...Core Number mm in Liquid line φ 6 35 1 4 4 Gas line φ 9 52 3 8 4 Connecting method Flare connecting Attached length piping Insulation Necessary Both Liquid Gas lines Power source supply Terminal block Screw fixing type Size Core number 1 5 mm2 4 cores Including earth cable 4 Connecting method Terminal block Screw fixing type Accessories included Union φ 9 52 φ 12 7 2 Installation sheet Manual inst...

Page 11: ...capacity kW Total capacity kW Min Max 220V 230V 240V Indoor unit combination Cooling capacity kW Standard room 2 room 1 20 2 0 1 9 2 0 2 4 470 480 620 2 2 2 1 2 0 22 2 2 1 9 2 2 2 6 470 540 650 2 5 2 4 2 3 25 2 5 1 9 2 5 2 7 470 640 660 2 9 2 8 2 7 28 2 8 1 9 2 8 3 1 470 730 800 3 4 3 2 3 1 20 20 2 00 2 00 2 9 4 0 4 9 480 970 1470 4 5 4 3 4 1 20 22 2 00 2 20 2 9 4 2 4 9 480 1070 1470 4 9 4 7 4 5 2...

Page 12: ... 8 6 5 28 35 2 60 3 20 1 5 5 8 6 8 450 1600 2340 7 3 7 0 6 7 35 35 2 95 2 95 1 5 5 9 6 8 450 1630 2340 7 5 7 2 6 9 b Cooling A room B room Min Standard Max Power consumption W Standard current A Room cooling capacity kW Total capacity kW Min Max 220V 230V 240V Indoor unit combination Cooling capacity kW Standard room 2 room 1 20 2 0 0 7 2 0 2 4 200 620 750 2 8 2 7 2 6 22 2 2 0 7 2 2 2 6 200 680 81...

Page 13: ...1 20 20 25 1 87 1 87 2 34 3 0 6 1 7 1 440 1490 2020 6 8 6 5 6 3 20 20 28 1 84 1 84 2 57 3 0 6 2 7 1 440 1560 2020 7 2 6 9 6 6 20 20 35 1 75 1 75 3 06 3 1 6 6 7 1 450 1710 2020 7 9 7 5 7 2 20 22 22 1 90 2 09 2 09 2 9 6 1 7 1 410 1490 2020 6 8 6 5 6 3 20 22 25 1 85 2 03 2 31 3 0 6 2 7 1 440 1540 2020 7 1 6 8 6 5 20 22 28 1 81 1 99 2 54 3 0 6 3 7 1 440 1610 2020 7 4 7 1 6 8 20 22 35 1 73 1 90 3 02 3 ...

Page 14: ...20 25 1 51 1 51 1 88 3 4 4 9 6 7 630 1230 2280 5 6 5 4 5 2 20 20 28 1 47 1 47 2 06 3 4 5 0 6 7 630 1260 2280 5 8 5 5 5 3 20 20 35 1 39 1 39 2 43 3 5 5 2 6 7 650 1370 2280 6 3 6 0 5 8 20 22 22 1 53 1 68 1 68 3 4 4 9 6 7 590 1200 2280 5 5 5 3 5 1 20 22 25 1 49 1 64 1 87 3 4 5 0 6 7 630 1260 2280 5 8 5 5 5 3 20 22 28 1 43 1 57 2 00 3 4 5 0 6 7 630 1290 2280 5 9 5 7 5 4 20 22 35 1 35 1 49 2 36 3 5 5 2...

Page 15: ...0 8 10 3 35 35 3 35 3 35 1 1 6 7 6 7 330 2350 2600 10 8 10 3 9 9 35 50 2 76 3 94 1 2 6 7 6 8 360 2550 2700 11 7 11 2 10 7 35 60 2 47 4 23 1 2 6 7 6 8 360 2600 2700 11 9 11 4 10 9 50 50 3 35 3 35 1 5 6 7 6 8 420 2600 2700 11 9 11 4 10 9 50 60 3 05 3 65 1 5 6 7 6 8 420 2650 2700 12 2 11 6 11 2 20 20 20 2 23 2 23 2 23 1 7 6 7 7 2 440 1630 2700 7 5 7 2 6 9 20 20 22 2 16 2 16 2 38 1 7 6 7 7 2 440 1640 ...

Page 16: ... 7 2 500 2100 2700 9 6 9 2 8 8 22 35 35 1 70 2 70 2 70 1 7 7 1 7 2 440 2150 2700 9 9 9 4 9 0 22 35 50 1 46 2 32 3 32 1 9 7 1 7 2 500 2200 2700 10 1 9 7 9 3 25 25 25 2 33 2 33 2 33 1 7 7 0 7 2 440 1800 2700 8 3 7 9 7 6 25 25 28 2 24 2 24 2 51 1 7 7 0 7 2 440 1900 2700 8 7 8 3 8 0 25 25 35 2 06 2 06 2 88 1 7 7 0 7 2 440 2000 2700 9 2 8 8 8 4 25 25 50 1 78 1 78 3 55 1 9 7 1 7 2 500 2050 2700 9 4 9 0 ...

Page 17: ...2 6 12 1 35 35 3 30 3 30 1 5 6 6 6 6 410 2880 2880 13 2 12 6 12 1 35 50 2 72 3 88 1 6 6 6 6 6 440 2880 2880 13 2 12 6 12 1 35 60 2 43 4 17 1 6 6 6 6 6 440 2880 2880 13 2 12 6 12 1 50 50 3 30 3 30 1 9 6 6 6 6 500 2880 2880 13 2 12 6 12 1 50 60 3 00 3 60 1 9 6 6 6 6 500 2880 2880 13 2 12 6 12 1 20 20 20 1 67 1 67 1 67 1 9 5 0 6 8 620 1450 2950 6 7 6 4 6 1 20 20 22 1 61 1 61 1 77 1 9 5 0 6 8 620 1450...

Page 18: ... 22 28 60 1 26 1 60 3 44 2 1 6 3 6 9 680 2050 3000 9 4 9 0 8 6 22 35 35 1 39 2 21 2 21 1 9 5 8 6 9 620 1750 3000 8 0 7 7 7 4 22 35 50 1 27 2 03 2 90 2 1 6 2 6 9 680 2000 3000 9 2 8 8 8 4 25 25 25 1 77 1 77 1 77 1 9 5 3 6 9 620 1550 3000 7 1 6 8 6 5 25 25 28 1 73 1 73 1 94 1 9 5 4 6 9 620 1600 3000 7 3 7 0 6 7 25 25 35 1 65 1 65 2 31 1 9 5 6 6 9 620 1650 3000 7 6 7 2 6 9 25 25 50 1 50 1 50 3 00 2 1...

Page 19: ...4 15 2 1 8 3 8 3 270 3500 3500 16 1 15 4 14 7 35 50 3 42 4 88 2 2 8 3 8 3 330 3500 3500 16 1 15 4 14 7 35 60 3 06 5 24 2 2 8 3 8 3 330 3500 3500 16 1 15 4 14 7 50 50 4 15 4 15 2 4 8 3 8 3 380 3500 3500 16 1 15 4 14 7 50 60 3 77 4 53 2 4 8 3 8 3 380 3500 3500 16 1 15 4 14 7 20 20 20 2 56 2 56 2 56 4 3 7 7 9 0 400 2210 3050 10 1 9 7 9 3 20 20 22 2 51 2 51 2 76 4 3 7 8 9 0 400 2270 3050 10 4 10 0 9 6...

Page 20: ...8 25 28 60 1 99 2 23 4 78 4 4 9 0 9 0 460 3050 3050 14 0 13 4 12 8 25 35 35 2 37 3 32 3 32 4 3 9 0 9 0 400 3050 3050 14 0 13 4 12 8 25 35 50 2 05 2 86 4 09 4 4 9 0 9 0 460 3050 3050 14 0 13 4 12 8 25 35 60 1 88 2 63 4 50 4 4 9 0 9 0 460 3050 3050 14 0 13 4 12 8 25 50 50 1 80 3 60 3 60 4 6 9 0 9 0 520 3050 3050 14 0 13 4 12 8 25 50 60 1 67 3 33 4 00 4 6 9 0 9 0 520 3050 3050 14 0 13 4 12 8 28 28 28...

Page 21: ...8 9 2 9 5 450 2400 2600 11 0 10 5 10 1 20 25 25 28 1 87 2 34 2 34 2 62 4 8 9 2 9 5 450 2400 2600 11 0 10 5 10 1 20 25 25 35 1 75 2 19 2 19 3 06 4 8 9 2 9 5 450 2400 2600 11 0 10 5 10 1 20 25 25 50 1 54 1 93 1 93 3 85 4 9 9 2 9 5 500 2400 2600 11 0 10 5 10 1 20 25 25 60 1 43 1 79 1 79 4 29 4 9 9 3 9 5 500 2430 2600 11 2 10 7 10 2 20 25 28 28 1 82 2 27 2 54 2 54 4 8 9 2 9 5 450 2400 2600 11 0 10 5 1...

Page 22: ...1 22 28 28 50 1 59 2 03 2 03 3 62 4 9 9 3 9 5 500 2430 2600 11 2 10 7 10 2 22 28 35 35 1 70 2 16 2 70 2 70 4 8 9 2 9 5 450 2400 2600 11 0 10 5 10 1 22 28 35 50 1 52 1 93 2 41 3 44 4 9 9 3 9 5 500 2430 2600 11 2 10 7 10 2 22 35 35 35 1 61 2 56 2 56 2 56 4 8 9 3 9 5 450 2430 2600 11 2 10 7 10 2 25 25 25 25 2 29 2 29 2 29 2 29 4 8 9 2 9 5 450 2400 2600 11 0 10 5 10 1 25 25 25 28 2 23 2 23 2 23 2 50 4...

Page 23: ... 6 9 7 6 410 2750 3200 12 6 12 1 11 6 35 50 3 05 4 35 1 6 7 4 7 6 490 2990 3200 13 7 13 1 12 6 35 60 2 73 4 67 1 6 7 4 7 6 490 2990 3200 13 7 13 1 12 6 50 50 3 70 3 70 1 8 7 4 7 6 560 2990 3200 13 7 13 1 12 6 50 60 3 36 4 04 1 8 7 4 7 6 560 2990 3200 13 7 13 1 12 6 20 20 20 2 00 2 00 2 00 2 2 6 0 8 6 680 2010 3200 9 2 8 8 8 5 20 20 22 2 00 2 00 2 20 2 2 6 2 8 6 680 2100 3200 9 6 9 2 8 8 20 20 25 2...

Page 24: ... 2 25 28 60 1 73 1 93 4 14 2 5 7 8 8 6 750 2890 3200 13 3 12 7 12 2 25 35 35 2 05 2 87 2 87 2 2 7 8 8 6 680 2890 3200 13 3 12 7 12 2 25 35 50 1 77 2 48 3 55 2 5 7 8 8 6 750 2890 3200 13 3 12 7 12 2 25 35 60 1 63 2 28 3 90 2 5 7 8 8 6 750 2890 3200 13 3 12 7 12 2 25 50 50 1 56 3 12 3 12 2 7 7 8 8 6 830 2890 3200 13 3 12 7 12 2 25 50 60 1 44 2 89 3 47 2 7 7 8 8 6 830 2890 3200 13 3 12 7 12 2 28 28 2...

Page 25: ... 7 9 9 3 960 2380 3200 10 9 10 5 10 0 20 25 25 28 1 61 2 01 2 01 2 25 2 5 7 9 9 3 960 2380 3200 10 9 10 5 10 0 20 25 25 35 1 50 1 88 1 88 2 63 2 5 7 9 9 3 960 2400 3200 11 0 10 5 10 1 20 25 25 50 1 32 1 66 1 66 3 31 2 7 7 9 9 3 1040 2430 3200 11 2 10 7 10 2 20 25 25 60 1 23 1 53 1 53 3 68 2 7 8 0 9 3 1040 2430 3200 11 2 10 7 10 2 20 25 28 28 1 56 1 95 2 18 2 18 2 5 7 9 9 3 960 2380 3200 10 9 10 5 ...

Page 26: ... 22 28 28 50 1 37 1 74 1 74 3 12 2 7 8 0 9 3 1040 2430 3200 11 2 10 7 10 2 22 28 35 35 1 46 1 85 2 32 2 32 2 5 7 9 9 3 960 2430 3200 11 2 10 7 10 2 22 28 35 50 1 30 1 66 2 07 2 96 2 7 8 0 9 3 1040 2430 3200 11 2 10 7 10 2 22 35 35 35 1 38 2 20 2 20 2 20 2 5 8 0 9 3 960 2430 3200 11 2 10 7 10 2 25 25 25 25 1 97 1 97 1 97 1 97 2 5 7 9 9 3 960 2380 3200 10 9 10 5 10 0 25 25 25 28 1 91 1 91 1 91 2 14 ...

Page 27: ...4 C 8 5kW 11 0kW 13 5kW Max 70m 7 0kW 5 6kW 15m Compressor stop start frequency Power source voltage 1 cycle time Stop time Voltage fluctuation Voltage drop during start Interval unbalance Difference in height between indoor units C Within 3 of rated voltage Within 15 of rated voltage Within 10 of rated voltage 3 min or more 6 min or more from stop to stop or from start to start Max 25m 15m 15m 10...

Page 28: ...F S 28ZF S 35ZF S 50ZF S Unit mm Models STM25ZF S 35ZF S 50ZF S 60ZF S Hanging bolt pitch 530 Celling opening 660 For conventional celling Hanging fixture C B A D Drain hose accessory To be installed at site Control box Hanging bolt pitch 530 Air outlet Air intake PANEL E Please arrange VP25 connector sockets on the installer s part 350 319 104 more 45 or 541 700 413 43 202 570 243 196 250 93 35 1...

Page 29: ...alve A Unit ø9 52 Ground terminal 314 14 12 850 203 1 510 136 9 476 286 4 12 50 290 49 6 43 5 328 100 3 67 9 67 9 15 640 124 34 6 20 º 2 0 º Unit mm Controller Terminal block Air outlet ø 4 8 Holes for tapping screws B A Air inlet Hanging bolt M8 4 35 670 Suspension bolts pitch 740 35 515 Suspension bolts pitch 455 30 30 325 455 106 740 150 38 78 135 30 230 11 255 236 105 Drain hose Connection ope...

Page 30: ...52 Liquid line service valve Gas line service valve valve C unit ø6 35 Liquid line service valve valve A unit ø6 35 valve C unit ø9 52 Gas line service valve valve A unit ø9 52 Gas line service valve valve B unit ø9 52 19 399 380 61 150 580 150 880 61 47 5 223 310 15 60 19 340 24 1 742 2 110 4 52 52 52 52 52 52 52 185 10 Model SCM80ZF S Unit mm ...

Page 31: ...int Check joint Sensor Th O D Sensor Th O A Sensor Th O R Heat exchanger Heat exchanger Liquid line Gas line ø6 35 ø6 35 ø9 52 ø9 52 Strainer Compressor Muffler 4 way valve Service valve Liquid Capillary tube Capillary tube Electric expansion valve EEVA EEVB Cooling cycle Heating cycle Service valve Gas Accumlator Accumlator Discharge Suction ...

Page 32: ...nt Sensor Th O D Sensor Th O A Sensor Th O R Heat exchanger Heat exchanger Liquid line Gas line ø6 35 ø6 35 ø9 52 ø9 52 Strainer Compressor Muffler 4 way valve Service valve Liquid Capillary tube Capillary tube Electric expansion valve EEVA EEVB Cooling cycle Heating cycle Service valve Gas Discharge Suction Receiver Muffler Sensor ...

Page 33: ...s Outdoor Unit Indoor Unit Sensor Th I R 2 Heat exchanger Sensor Th I A Sensor Th I R1 Sensor Th O D Sensor Th O A Accumlator Sensor Th o C Service valve Liquid Electronic expansion valve Capillary tube Compressor Check joint 4way valve Discharge Suction Sensor Th O R Heat exchanger separator Oil Cooling cycle Heating cycle ...

Page 34: ... A Sensor Th I R1 Sensor Th O D Sensor Th O A Accumlator Sensor Th o C Service valve Liquid Electronic expansion valve Capillary tube Compressor Check joint 4way valve Discharge Suction Sensor Th O R Heat exchanger Cooling cycle Heating cycle ø 9 52 or ø 12 7 ø 9 52 or ø 12 7 ø 9 52 or ø 12 7 Muffler Accumlator Gas line 22 25 28 35 type ø 9 52 50 60 type ø 12 7 Receiver ...

Page 35: ...Sensor Th I R1 Sensor Th I A Sensor Th I R2 EEVA EEVD EEVC EEVB Strainer Discharge Suction Sensor Th O D Receiver Capillary tube Sensor Th O C Service valve Liquid Electronic expansion valve Compressor Check joint Oil separator 4way valve Sensor Th O A Sensor Th O R Capillary tube Heat exchanger Accumlator Accumlator Gas line 22 25 28 35 type ø 9 52 50 60 type ø 12 7 Cooling cycle Heating cycle ...

Page 36: ...lation to temperatures 14 16 22 20 18 24 26 28 ISO T1 Standard Condition Outdoor air W B temperature C W B ISO T1 Standard Condition Indoor air W B temperature C W B Heating Cooling Coefficient of cooling Heating capacity in relation to temperature Cooling operation Outdoor air D B temperature C D B Heating operation Indoor air D B temperature C D B 1 3 0 6 0 7 0 8 0 9 1 0 1 2 1 1 5 10 15 20 25 30...

Page 37: ...nger Air inlet temperature of outdoor unit in ºCWB Adjustment coefficient 10 0 95 9 0 94 7 0 93 5 0 91 3 0 88 1 0 86 1 0 87 3 0 92 5 1 00 Piping length m Cooling Heating 7 1 0 1 0 10 0 99 1 0 15 0 975 1 0 20 0 965 1 0 25 0 95 1 0 SCM45ZF S 60ZF S 16 18 20 22 24 20 ISO T1 Standard Condition Outdoor air W B temperature C W B ISO T1 Standard Condition Indoor air W B temperature C W B Heating Cooling ...

Page 38: ...nsistor Symbol EEVA D 20S Tho A Tho R Tho D Tho C Parts name Electronic expansion valve 4 way valve coil Sensor outdoor air temp Sensor outdoor H X temp Sensor discharge pipe temp Sensor suction pipe temp Symbol 3 1 Electrical wiring 1 Indoor unit Models SKM20ZF S 22ZF S 25ZF S 28ZF S 35ZF S CNW CFI HEAT EXCHANGER Power line Outdoor unit CNM CNU CNC Tr F 250V 3 15A Printed circuit board 1 52C 4 N ...

Page 39: ...ircuit board 1 52C 4 N ZNR WH 2 N 3 SM FMI BK RD WH Y GN RD 1 3 4 5 6 WH BL CNU YL BK TB RD J Y G G BK CNE CNG CNF Back up switch ThI A ThI R2 ThI R1 Display Wireless R Amp Black Brown Red White Yellow Green BK BR RD WH Blue Yellow BL YL Y G Color symbol Model SKM50ZF S ...

Page 40: ...box Y X Z X Y Z BK RD T2 T1 Wired remote control Optional parts Power line Outdoor unit Wired remote control Optional parts T1 CNG CNP CNE CNQ CNM CNU 1 3 5 4 6 G CNC 1 2 N 3 S N J R L CNB Y X Z X Y Z T2 ThI A ThI R1 ThI R2 ThI A ThI R1 ThI R2 YL BL YL BK RD WH WH BK RD Y G Y G RD BK WH BK WH RD RD RD BL YL BK RD WH BK BK Y G OR WH BK Y G RD RD BK WH WH BK RD BK Color symbol BL Y G Black Blue Yell...

Page 41: ...DC P PWB3 CAPACITOR BK RD CNG PWB1 MAIN PWB2 POWER A EEV B EEV HEATER CNC Tho D Tho C Tho A Tho R CNT CNK CNJ CND CNB FMo 20S L 1 AC N AC N AC L AC L BL GR BL GR L AF_L2 AF_L1 OR OR V CM W BK RD WH U Y G G2 T3 B UNIT CNH CNG G3 CNH CNG CNP CNO WH WH BK BK BR 3 2 1 CNI RD N 1 Black Red White Yellow Green BK RD WH Blue BL Brown BR Gray GR Orange OR Y G Color symbol LED E ERROR Red ...

Page 42: ...R BK RD CNG L AF_L2 AF_L1 T2 T1 B UNIT A UNIT CNH CNG BK PWB1 MAIN AC N AC L G3 CNH CNG CNT CNK CNJ CND CNB CNP CNO WH WH BK BK BR 3 2 1 EARTH Y G Y G FMo PWB2 POWER V CM W U CNI 20S RD 3 2 1 WH BK N L BL GR BL GR N 1 L 1 1 Phase 220 240V 50Hz Power Source Tho D Tho C Tho A Tho R Black Red White Yellow Green BK RD WH Blue BL Brown BR Gray GR Orange OR Y G Color symbol LED E ERROR Red ...

Page 43: ...R BK RD CNG L AF_L2 AF_L1 T2 T1 B UNIT A UNIT CNH CNG BK PWB1 MAIN AC N AC L G3 CNH CNG CNT CNK CNJ CND CNB CNP CNO WH WH BK BK BR 3 2 1 EARTH Y G Y G FMo PWB2 POWER V CM W U CNI 20S RD 3 2 1 WH BK N L BL GR BL GR N 1 L 1 1 Phase 220 240V 50Hz Power Source Tho D Tho C Tho A Tho R Black Red White Yellow Green BK RD WH Blue BL Brown BR Gray GR Orange OR Y G Color symbol LED E ERROR Red ...

Page 44: ...Y G Y G 250V 20A FUSE FMo PWB2 POWER V CM W U CNI 20S RD 3 2 1 WH BK N L BL BL N 1 L 1 OR OR OR OR BK WH RD BK RD WH AC N AC L GR GR Y G EARTH EARTH Y G 1 2 3 BR BK WH CNP UNIT B T3 T4 C UNIT 3 2 1 EARTH WH BK BL Y G CNR EARTH 1 2 3 UNIT D T5 Y G YL BK WH CNS 1 Phase 220 240V 50Hz Power Source Tho D Tho C Tho A Tho R LED E ERROR Red Black Red White Yellow Green BK RD WH Blue Yellow BL Brown BR Gra...

Page 45: ...This button changes the present time and TIMER time CANCEL button This button cancels the ON timer and OFF timer RESERVE button This button sets the present time and TIMER time S Indication section OPERATION MODE indicator Indicates selected operation with lamp Auto Cool Heat Dry TEMPERATURE indicator Indicates set temperature Does not indicate temperature when operation mode is on AUTO FAN SPEED ...

Page 46: ...on AIR CON No Air conditioning system No switch Displays the number of the connected air conditioning system CHECK switch This switch is used at servicing TEST switch This switch is used during test operation Temperature setting switches These switches are used to set the temperature of the room VENT switch Switch that operates the connected ventilator Timer setting switches These switches are use...

Page 47: ...ates during operation Blinks at air flow stop due to the HOT KEEP TIMER light yellow Illuminates during TIMER operation RUN HOT KEEP light green Illuminates during operation Blinks at air flow stop due to the HOT KEEP ECONO light orange Illuminates during ECONOMY operation TIMER light yellow Illuminates during TIMER operation HI POWER light green Illuminates during HIGH POWER operation ECONO light...

Page 48: ...FF button Unit ON OFF button Unit ON OFF button SKM model STM model 4 3 Drain motor forced operation functions STM SRRM only 1 Operation When the float switch detects drain water please use the wireless remote control to set the operation mode to heating set the temperature to 30 C and set the timer to continuous operation When the float switch detects drain water press the TEST switch on wired re...

Page 49: ...e power has been restored 2 The following settings will be cancelled a Timer settings b High power operations Notes 1 Power blackout auto restart function is set at on when the air conditioner is shipped from the factory Consult with your dealer if this function needs to be switched off 2 When power failure ocurrs the timer setting is cancelled Once power is resumed reset the timer 3 If the jumper...

Page 50: ...thin the range shown above If demand capacity of the indoor units exceeds the maximum capacity of the outdoor unit the demand capacity will be proportionally distributed b Outdoor unit speed control 4 7 Cooling operation 1 Summary a Capacity control Model Capacity SCM40ZF S 1 9 4 9 kW SCM45ZF S 0 7 5 6 kW SCM48ZF S 1 1 6 7 kW SCM60ZF S 1 4 6 9 kW SCM80ZF S 1 0 9 3 kW 0 rps A rps or less More than ...

Page 51: ...13 29 53 13 46 15 82 15 82 15 54 15 35 65 15 54 22 12 43 12 43 12 34 12 24 43 12 34 20 25 28 35 rps Note 1 Values in are for type SRRM Model Indoor Operation Mode Automatic High Medium Low Hi power Econo 12 54 12 54 12 40 12 27 54 12 40 12 99 12 90 12 99 12 90 12 70 12 42 90 12 70 25 35 rps STM SRRM models Model Indoor Operation Mode Automatic High Medium Low Hi power Econo 7 28 7 28 7 22 7 15 28 ...

Page 52: ...g All closed Fan stop abnormal stop units 0 Fan stop abnormal stop units 0 All units ON According to command speed OFF OFF According to stop mode Cooling Thermostat OFF All indoor units Thermostat OFF Some of indoor units Fan stop abnormal stop Some of indoor units Failure Outdoor unit Fixed Automatic Note 1 Values in are for type SRRM Model Indoor Operation Mode Automatic High Medium Low Hi power...

Page 53: ...it command total speed value is the total of the values from each unit in item 2 4 8 Heating operation 1 Summary a Capacity control Model Capacity SCM40ZF S 1 3 5 2 kW SCM45ZF S 0 7 6 8 kW SCM48ZF S 0 78 7 1 kW SCM60ZF S 0 75 7 2 kW SCM80ZF S 0 95 9 5 kW Capacity control is within the range shown above If demand capacity of the indoor units exceeds the maximum capacity of the outdoor unit the dema...

Page 54: ... 9 23 73 9 37 50 rps STM SRRM models Model Indoor Operation Mode Automatic High Medium Low Hi power Econo 5 40 5 40 5 29 5 17 40 5 29 5 49 5 49 5 36 5 21 49 5 36 7 59 7 59 7 42 7 24 59 7 42 7 64 7 64 7 47 7 27 64 7 47 25 35 50 60 rps c SCM60ZF S SKM model Model Indoor Operation Mode Automatic High Medium Low Hi power Econo 7 47 7 47 7 32 7 18 47 7 32 7 47 7 47 7 33 7 19 47 7 33 7 48 7 48 7 34 7 20...

Page 55: ...e following conditions are met the defrosting operation will start 1 During normal operation a When 40 minutes has passed since the start of heating or 40 minutes after the last defrosting based on cumulative operation time of compressor b When the outdoor heat exchanger sensor Tho R temperature is 2 C or less for 3 continuous minutes after 37 minutes have passed c Outdoor temperature sensor Tho A...

Page 56: ...c 120 sec Indoor unit fan is in response to Hot Keep Notes 1 3 Operation of function component in defrosting SCM40ZF S Outdoor unit speed Outdoor unit fan R1 rps R2 rps F1 1 room 2 room 1 room 2 room 6th speed 70 70 50 50 X1 pluse X2 pluse 1 room 2 room 1 room 2 room Operating unit 180 135 140 105 SCM45ZF S Outdoor unit speed Outdoor unit fan R1 rps R2 rps F1 1 room 2 room 1 room 2 room 6th speed ...

Page 57: ...c operation or when the automatic operation is selected during heating cooling or dehumidifying operation the unit is operated in the previous operation mode 4 Setting temperature can be adjusted within the following range There is the relationship as shown below between the signals of the wireless remote control and the setting temperature Signals of wireless remote control Display 6 5 4 3 2 1 0 ...

Page 58: ... 1 The ON with the mark indicates an ON operation using the remote control unit switch etc ON 4 11 External control remote display control of input signal STM SRRM only Make sure to connect the wired remote control unit Control of input signal is not available without the wired remote control unit 1 External control remote display output Following output connectors CNT are provided on the printed ...

Page 59: ...m the remote control signal line b The air conditioner operation is stopped when the CnT input is changed from ON to OFF 4 When the operation permission prohibition mode is set to effective by the indoor function setting selected by the remote control the operation depends on 1 above When the jumper wire J3 is short circuited Normal operation is enable when shipping When CnT input is set to ON the...

Page 60: ...exchanger ThI R1 is 5 C or lower 2 The indoor command speed is more than minimum rps b Detail of operation 1 When indoor heat exchanger is 5 C or lower the indoor command speed is reduced by 4 rps at each 20 seconds The lower limit speed is minimum rps 2 When the indoor heat exchanger is in the range of 5 7 C if the command speed is been maintained and the operation has continued for more than 20 ...

Page 61: ... the indoor command speed is set to the maximum number of revolutions at fan speed MED c Rest conditions Any one of the following conditions 1 Fan speed set to anything other than AUTO or HI or operation mode set to anything other than HI POWER 2 30 minutes elapsed after this command starts 3 Indoor command speed set to 0 rps 4 High pressure control a Purpose Prevents abnormally high pressure oper...

Page 62: ...on operation 3 Values in are SCM60 SCM80 6 Crankcase heater a Operating conditions When all the conditions below are satisfied 1 After the operation mode is changed to stop and the decision speed becomes 0 rps continuously for 30 minutes 2 When the temperature detected by the outdoor temperature sensor is 10 C or lower after the compressor stops b Detail of operation The crankcase heater operates ...

Page 63: ...operation when the outdoor air temperature ThO A is 22 C or lower for 3 minutes continuously b Detail of operation Taking the lower limit of decision speed range at 22 rps 60 type 20 rps c Reset condition When the outdoor air temperature ThO A is 24 C or higher l0 Cooling low outdoor temperature protective control SCM40ZF S SCM48ZF S SCM80ZF S only I a Operating conditions When the outdoor air tem...

Page 64: ...ntained c Reset conditions When the outdoor air temperature drops below 16 C Outdoor unit side During heating operation if the outdoor unit is operating at a decision speed other than 0 rps and the outdoor temperature is A C or more for 30 continuous seconds current safe control is performed Operation is restored when the outdoor temperature is B C or less Values of A B 12 Heating low temperature ...

Page 65: ...0 C the following decision speed controls are performed Discharge pipe temperature C Notes 1 If the temperature of the discharge pipe is 90 C or more and less than 110 C the decision speed is reduced by 4 rps 2 After 20 seconds if the temperature of the discharge pipe has decreased it is lowered 2 rps If the temperature has risen or is the same it is lowered another 4 rps 3 If the temperature of t...

Page 66: ... the discharge pipe sensor temperature after X minutes 2 Tho A X After compressor operation the outdoor air sensor temperature after X minutes 21 Outdoor unit failure This is a function for determining when there is trouble with the outdoor unit during air conditioning The compressor is stopped if any one of the following in item a b is satisfied Once the unit is stopped by this function it is not...

Page 67: ... is run for 2 minutes at that speed Cooling Heating Decision speed Less than 70 70 or more Outdoor fan speed 6th speed 5th speed Less than 70 70 or more 6th speed 5th speed SCM48ZF S a The fan operates as follows according to the decision speed Except during defrost b If the outdoor unit s fan speed drops the outdoor fan is run for 1 minute at that speed Cooling Heating Decision speed Less than 70...

Page 68: ...ion part through properly securing it Improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel It s improper installation can also result in heat generation or fire When setting up or moving the location of the air conditioner do not mix air etc or anything other than the designated refrigerant R41...

Page 69: ...ide wall structures Intersediate support or pillar and firaly install the unit after level surface has been checked When the pipe is connected at the rear cut off the lower and the right side portions of the sleeve collar as shown by the broken line 2 Drilling of holes and fixture of sleeve Option parts The connecting wires may touch the metal inside the wall and cause danger so it is necessary to...

Page 70: ...cap is not inserted properly water leak may occur Hold the bottom of the pipe and change its direction before stretching it and shaping it Wall Gutter Pipes storage area Do not place the power supply cords above the gutter because the air conditioner is structured in a way where condensation on the back side is collected in to the drain pan before drainage Use cables for interconnection wiring to ...

Page 71: ...xceeds 3 m hot air will gather in the ceiling Suggest to the customer to also install a circulator 2 Where there are no wind disturbances to the suction inlet and blowing outlet where the fire alarm will not be set off erroneously where no short circuits occur 3 Where there is no obstructions to the air flow and where the cooled air can be evenly distributed 4 A solid place where the unit or the w...

Page 72: ...43 E B A C 1000 or more mm Obstruction 1000 or more 2500 or more Control Lid Clamp Terminal block Installation Space front view unit mm 2 Drilling of holes in the wall and fixture of sleeve The instructions for installation is the same as the SKM type Please refer to page 67 3 Preparations for the Main Frame Mounting of interconnecting wires Field wiring a Remove the control lid b Connect the conn...

Page 73: ...it position height To adjust height use the four lower nuts with the four upper nuts left loose Please make sure that the unit s four hanging fixtures touch the four lower nuts and washers evenly without any play g Please make sure that the unit main body is installed levelly Level must be checked with the level gauge or a clear hose filled with water A tolerable height difference at an end of the...

Page 74: ...h it collects drain Use a VP 30 or larger pipe for a collecting main Do not fail to provide heat insulation at the following two points because they can cause dew condensation and a resultant water leak Drain socket After a drain test is completed apply a pipe cover small accessory onto the drain socket cover the pipe cover small the clamp and part of the drain hose with a pipe cover large accesso...

Page 75: ...ew of a corner panel and remove a corner panel four places Figure 3 f A panel is hooked on two bolts markAB figure 4 g Please rotate a hook put in the slot on the panel and carry out fixing the panel temporarily Figure 5 h Tighten the two bolts used for fixing the panel temporarily and the other two i Please open the lid of a control box j Please connect a louver motor connector and Display connec...

Page 76: ... may be performed with ease 5 Where water may be drained easily 6 Where the unit is not influenced by the television stereo radio or the lights 7 Where the unit is not influenced by high frequency equipment and wiring equipment 8 Where oil splashes do not occur frequently 9 Where sunlight and strong lights do not directly hit the receiver 10 A flat ceiling surface bottom of ceiling b Installation ...

Page 77: ...move the screws 5 screws from the main unit c Attach the filter guide to the main unit with 14 fixing screws d Attach the air filter onto the filter guide and then attach the filter bracket and the filter bracket fixing screws in that order Clamp Control lid Terminal block Use cables for interconnection wiring to avoid loosening of the wires CENELEC code for cables Required field cables H05RNR4G1 ...

Page 78: ... location of the wireless receiver Installation frame Flat head machine screw Wireless receiver M8 nut M8 large washer standard accessory M8 large washer standard accessory M8 spring lock washer M8 nut M8 hanging bolt Main frame Traps Tapping screw Drain hose Clamp Opposite slope Bumps Conduct the installation correctly and ensure that the water is draining correctly It may lead to water leaks NOT...

Page 79: ...adiation from other heat sources f Where there are no obstructions animals plants etc to the suction inlet and blowing outlet g Where water may drain out h Please avoid the following locations 1 Where there is constant exposure to harsh winds such as the top floors of a building Also locations with exposure to salty air 2 Where there are oil splashes vapor and smoke 3 Where there are possibilities...

Page 80: ...ring to avoid loosening of the wires CENELEC code for cables Required field cables H05RNR3G4 0 Example H Harmonized cable type 05 300 500 volts R Natural and or synth rubber wire insulation N Polychloroprene rubber conductors insulation R Stranded core 3 Number of conductors G One conductor of the cable is the earth conductor yellow green 4 0 Section of copper wire mm2 1 Connection of the power li...

Page 81: ...e change in the sizes of gas side pipes usage of the variable joints if a 5 0 and 6 0 kW class indoor unit gas side pipe 12 7 is going to be connected to the service valves 9 52 variable joints available as accessories must be applied to the gas side service valves Examples of use of variable diameter joints Connection of indoor unit of Class 5 0 to A unit Securely fit the copper packing between t...

Page 82: ...onditioning system may cause the refrigerant cycle to break down Note Fully open the service valves on both liquid and gas sides after completing air purging To protect the global environment use a vacuum pump that do not release flourocarbon gas into the atmosphere When a vacuum pump cannot be used due to certain conditions for installation sufficient refrigerant is available for air purging with...

Page 83: ...rect as the rating No gas leaks from the joints of the service valve Power cables and crossover wires are securely inserted and fixed to the terminal board Each indoor and outdoor unit is properly connected no wrong wiring or piping Service valve is fully open Refrigerant has been additionally charged when the total pipe length exceeds the refrigerant charged pipe length The pipe joints for indoor...

Page 84: ...its using a single remote control Up to 16 indoor units can be controlled with a single remote control a Run 3 wire remote control lines between each of the indoor units See Cautions when extending remote control lines on page 94 concerning extended remote control lines b Set the remote control communications address on 0 F using rotary switch SW11 on the indoor unit s control board taking care no...

Page 85: ... Replace the top casing as before f Use a cord clamp to attach the remote control cord to the wall g Set the functions according to the types of in door unit See Section Function Setting Thin walled part Upper Lower Lower case Upper Lower Lower case Upper Lower Board Wiring X Y Z Red White Black Upper case Remote control cord Electrical box Not included Upper Lower Cable outlet Lower case Upper Lo...

Page 86: ...3 04 05 06 07 08 09 10 Function number A Default setting Hi CEILING SET FILTER SIGN SET POSITION EXTERNAL INPUT SET ROOM TEMP OFFSET FAN CONTROL FREEZE PREVENT TEMP FREEZE PREVENT CONTROL Heating room temperature offset Heating fan control Louver control setting STANDARD Mild mode Hi CEILING 1 Powerful mode NO DISPLAY AFTER 180H AFTER 600H AFTER 1000H 1000H STOP FIX 1 OF 4 4 positiion stop IN MOTI...

Page 87: ... 2 Press either or button Function number A Function description B from the list of remote control unit functions will be displayed one by one Select a desired function 3 Press the SET button The screen display will be switched as follows SETTING Setting C ex AUTO RUN ON 4 Press either or button A list of Settings C will be displayed one by one Select your desired setting 5 Press the SET button Th...

Page 88: ...ng is displayed for 2 seconds then followed by SET COMPLETE and the function setting process is completed Then the screen display will be switched to Function number A Function description B so if you want to continue to set another function repeat the stepa as explained above To finish the function setting process please proceed to Step 8 8 Press AIR CON No button The screen display will go back ...

Page 89: ...Press the button once The display will change to TEMP RANGE c Press the SET button to enter the temperature range setting mode d Using the or button select Hi LIMIT SET or Lo LIMIT SET the press the SET button e If Hi LIMIT SET is selected 1 The display changes from SET UP Hi LIMIT 22ºC flashing 2 Using the button select the upper limit value Display example Hi LIMIT 22 C flashing 3 Press the SET ...

Page 90: ...per link total length of wires 1000 m maximum 0 75 2 0 mm2 2 core Connection to the terminal block for remote control polar total length of wires 600 m maximum No Name ot the recommended signal wire 1 Shielding wire 2 Vinylcabtire round cord 3 Vinyl cabtire round cable 4 Control vinyl insulated vinyl sheath cable Master Slave Address SW 3 1 ON Master OFF Slave Shielding wires 100 200 m 0 5 mm2 3 c...

Page 91: ...3 Use the pan head screws to make the small adjustments in height The height dimension on the installation dia gram allows for adjustment within range of 80 to 100 mm If the pan head screws are completely tightened the height will be 80 mm 5 8 Installation of optional parts Ducted type Table of optional parts Bottom air inlet grille set RTS12 1 Rear inlet filter set RBF12 2 Duct joint for air outl...

Page 92: ... Duct joint Tapping screws Heat insulation materials 15x15xt3 Duct joint Tapping screws 8 locations Indoor unit Unit mm 2 Rear inlet filter set a Part No RBF12 b Installation Do not use this filter set alone There are two inlet ports lower inlet port normal and rear inlet port 1 Detach the rear panel and the hanger metal screwad onto the rear panel from an indoor unit 2 Attach the removed hanger m...

Page 93: ...l static pressure characteristics Heating Hi Air inlet grille air flow and friction loss characteristics Part No RTS12 Air flow m3 min Pressure loss Pa 2 3 4 5 6 7 8 9 10 30 20 10 0 SRRM50ZE S SRRM60ZE S SRRM35ZE S SRRM25ZE S ...

Page 94: ...switch are also red and blace respectively Note that the control s connector for the float switch is already connected to the inside unit s con nector for the float switch so disconnect them and connect it to the drain up kit s con nector for the float switch and fix it with the wire clamp c Installation of drain up kit Name Drain pump Drain hose Hose clamp Tapping screw No 1 2 3 4 Qty 1 1 1 4 455...

Page 95: ...nward inclination gradient of 1 100 or more and take care not to make a trap or uphill pass 7 When connecting the drain pipe take care not to apply force on the pipe of the unit and clamp the pipe as close as possible to the unit 8 Don t attach air purge pipe because the drain might spout 9 Be sure to provide heat insulation to the indoor side drain pipe Drain hose Down gradient 1 100 or more Up h...

Page 96: ...gain Temporarily turn off the power source and turn it on again in about 1 min and turn the unit on again YES NO YES YES Does the trouble occur again Disconnect connectors and connect them again Operate the unit again after confirming that the fuse and the varistor equipped on PCB does not burn out Carry out checks according to detailed check process See later page Unit did not cool etc Is the pow...

Page 97: ...ge Defective discharge pipe sensor Error of signal trans mission If serial signal cannot be sent or received for 1 minute and 55 seconds continuously Defective power supply Broken signal wire Defective indoor outdoor unit circuit boads Broken heat exchanger sensor 2 wire Connector poor connection Disconnected sensor Drain abnormality STM SRRM only Float switch motion Drain at reverse gradient Floa...

Page 98: ... 120 1 9 55 14 125 1 6 60 12 130 1 4 65 10 135 1 3 Discharge pipe sensor temperature characteristics Indoor fan motor error Defective fan motor connector poor connection defective PCB Is connector connection good YES NO NO Is the output of the indoor unit s printed circuit board normal Normal NO YES YES Correct connector connection Is DC fan motor resistance value good Replace indoor PCB Replace i...

Page 99: ...ny places where gas is leaking YES YES NO NO NO NO NO NO YES YES YES YES Current safe stop Overload operation compressor lock overcharge Secure space for inlet and outlet Discharge refrigerant Is refrigerant charge quantity adequate Is outdoor ventilation condition good Inspect compressor Defective inverter YES YES NO NO YES YES YES NO NO YES NO Check compressor wiring visually Check insulation re...

Page 100: ...mission Wiring error including power cable defective indoor outdoor unit PCB Does error persist after power reset Are the lines connecting the indoor and outdoor units connected normally Is DC 0 Approx 12V detected between w e terminals on indoor unit terminal block YES YES NO NO YES NO Trouble by transient cause not unit trouble Correct improper wire connection on indoor outdoor unit Defective in...

Page 101: ...outdoor unit Heating High pressure control mode Operation mode Room temperature sensor Continuous compressor operation command is not released Release of continuous compressor operation command Continuous compressor operation command is not released Anti frosting Hot keep Indoor fan stop Heat exchanger sensor Drain abnormality STM SRRM only Drain piping defective pump defect YES Has an overflow de...

Page 102: ... the voltages in the following figure are not output at connector pins No q r and t the indoor unit s circuit board has failed and the fan motor is normal 2 DC Fan motor resistance check Notes 1 Remove the fan motor and measure it without power connected to it Notes 2 If the measured value is below the value when the motor is normal it means that the fan motor is faulty FMI DC15V Indoor unit circu...

Page 103: ...ES YES Remote control defects Abnormality is not found LO MED HI AUTO HI POWER ECONO ON OFF AM PM a Press the reset switch of the remote control b If all LCD are displayed after zero 1 display it is ba sically normal Replace the display Control problem on main unit Is the unit operable with remote control Normal Defective remote control NO YES 1 Note 1 Check method of remote control ...

Page 104: ...e stack good Is condenser good Is there conducitvity in the inductor Is the fuse good Is the varistor good Is the noise filter good Fuse is defective e Replace Varistor is defective e Replace Noise filter is defective e Replace The printed circuit board CPU is defective e Replace The printed circuit board POWER is defective e Replace The power transistor is defective e Replace YES YES YES YES YES ...

Page 105: ...l if there is approximately DC 5 V 10 seconds after the power supply is turned on Display lamp inspection LED 5 Abnormality display lamp Red LED 3 to 4 Light display for each room Green ON or flashing Protection function operating ON when there is a serial signal being re ceived among each of the indoor units OFF during ignition stop including no connection abnormality Power supply and serial sign...

Page 106: ...as shown above it is defective Normal if there is approximately DC 5 V 10 seconds after the power supply is turned on Display lamp inspection LED 5 Abnormality display lamp Red LED 2 to 4 Light display for each room Green ON or flashing Protection function operating ON when there is a serial signal being re ceived among each of the indoor units OFF during ignition stop including no connection abno...

Page 107: ...ective Normal if there is approximately DC 5 V 10 seconds after the power supply is turned on Display lamp inspection LED 5 Abnormality display lamp Red LED 2 to 4 Light display for each room Green ON or flashing Protection function operating ON when there is a serial signal being re ceived among each of the indoor units OFF during ignition stop including no connection abnormality Power supply and...

Page 108: ...e does not operate as shown above it is defective Normal if there is approximately DC 5 V 10 seconds after the power supply is turned on Display lamp inspection LED 5 Abnormality display lamp Red LED 1 to 4 Light display for each room Green ON or flashing Protection function operating ON when there is a serial signal being re ceived among each of the indoor units OFF during ignition stop including...

Page 109: ...self diagnosis display inspect the compressor system burns wiring mistakes etc If no problems are found check the output of the power transistor 2 Output inspection procedure Disconnect the terminals for the compres sor If an output such as the one shown in the figure on the right can be measured the power transistor and the circuit board for the outdoor unit are normal For about 50 seconds After ...

Page 110: ...rstly loose the connecting portion of the charge hose A at the gauge manihold side and open the valve e for a few seconds and then immediately retighten it after observing that gas is blow out from the loosened portion e Open the valve q and e after discharging air from the charge hose A then the liquid refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cyl...

Page 111: ...es Pseudo azeotropic characteristics R410A is a pseudo azeotropic mixed refrigerant composed of two constituents R32 and R125 Quasi azeotropic condition refers to a state in which the dew point curve and boiling point curve gas liquid equilibrium curves pressure constant almost lie on top of each other and a multi constituent refrigerant having this chemical characteristic incurs less composition ...

Page 112: ...poisonous gas may occur 5 When an air conditioning system charged with a large volume of refrigerant e g multi type air conditioner is installed in a small room it is necessary to exercise care so that even when refrigerant leaks its concentration does not exceed the marginal level If the refrigerant gas leakage occurs and its concentration exceeds the marginal level an oxygen starvation accident ...

Page 113: ...ence outer diameter Minimum joint thickness diameter of copper pipe jointed mm mm 1 4 6 35 0 50 3 8 9 52 0 60 1 2 12 70 0 70 5 8 15 88 0 80 7 2 2 Processing of piping materials When performing the refrigerant piping installation care should be taken to ensure that water or dust does not enter the pipe interior that no other oil other than lubricating oils used in the installed air conditioner is u...

Page 114: ...pe 1 4 6 35 0 8 0 0 5 1 0 1 5 1 5 2 0 3 8 9 52 0 8 0 0 5 1 0 1 5 1 5 2 0 1 2 12 70 0 8 0 0 5 1 0 1 5 2 0 2 5 5 8 15 88 1 0 0 0 5 1 0 1 5 2 0 2 5 Table 6 Dimensions related to flare processing for R22 Nominal Outer diameter Thickness A mm diameter mm mm Flare tool for R410A Conventional flare tool Clutch type Clutch type Wing nut type 1 4 6 35 0 8 0 0 5 0 5 1 0 1 0 1 5 3 8 9 52 0 8 0 0 5 0 5 1 0 1 ...

Page 115: ...0 and which contains less contaminants It is necessary to carefully treat store copper pipes so that they are not collapsed deformed or damaged Due care must also be exercised so that foreign matters such as dust and water do not enter the pipe interior A piping set s open end is sealed with a cap etc When storing it make sure that it is sealed securely When storing a cladded copper pipe or bare c...

Page 116: ...essing the connected parts As brazing is molten between the joined surfaces to yield high adhesive strength it is necessary to secure a wide enough space to be joined and also an adequate clearance between the joined surfaces Copper pipe joints minimum insertion depths outer pipe diameters and clearances between outer and inner pipe diameters are as shown in Table 10 In the case of bronze brazing ...

Page 117: ...assium fluoride potas sium chloride and sodium fluoride to the borax boric acid compound Cautions 1 Remove the flux after brazing 2 When chlorine contained in the flux stays within the pipe the lubricating oil deteriorates So use a flux which does not contain chlorine 3 When adding water to the flux use water which does not contain chlorine e g distilled water or ion exchange water 4 Brazing As br...

Page 118: ... part from overheating damage or quality deterioration due to flame or heat take adequate steps for protection such as 1 by shielding with a metal plate 2 by using a wet cloth and 3 by means of heat absorbent 4 Movement during brazing Eliminate all vibration during brazing to protect brazed joints from cracking and breakage 5 Oxidation preventive In order to improve the brazing efficiency various ...

Page 119: ...Two types of electronic balance for refrigerant charging are available one for 10kg cylinder and the other for 20kg cylinder Electronic balance for 10kg cylinder precision 2g Electronic balance for 20kg cylinder precision 5g Refrigerant is charged manually by opening closing the valve d Torque wrench for nominal diameters 1 2 and 5 8 Along with changes in flare nut sizes for enhanced pressure resi...

Page 120: ...ng for refrigerant cylinder According to the charge hose s cap size a charge port with 1 2 UNF 20 threads per inch and corresponding packing are required j Gas leakage detector A high sensitivity gas leakage detector exclusive for HFC refrigerant is used In the case of R410A the detection sensitivity is about 23g per year 2 General tools a Vacuum pump b Torque wrench for 1 4 opposite side 17 mm fo...

Page 121: ...re to make setting so that liquid can be charged When using a cylinder equipped with a siphon liquid can be charged without turning it upside down b Connect the gauge manifold s charge hose to the electronic balance s connecting port 3 2 c Open the refrigerant cylinder s valve and after opening the charging valve a little close it 1 2 d After making zero 0 adjustment open the charging valve and by...

Page 122: ...he indoor outdoor units Caution When storing the indoor unit piping in its original position be careful not to break the piping 2 Installing the unit a Proceed with the installation following the steps described in 7 3 2 New installation work 7 3 4 Replacing the unit Never use the existing refrigerant piping Use a brand new refrigerant piping 1 when replacing the air conditioner using the conventi...

Page 123: ...e preventing function float switch moisture indicator drier and other accessory functions should be adjusted or replaced where necessary 4 Electrical circuit b Checking the accessories to the refrigerant recovering equipment 2 Preparations for recovering procedures a Installation of refrigerant recovering equipment Install the equipment in a place which satisfies the following requirements as much...

Page 124: ...ccessories tools are required Shown below are standard accessories 1 Recovering cylinder Use a recovering cylinder designated by the equipment manufacturer A detachable cylinder must be such that it complies with the laws and regulations concerned Do not use an ordinary cylinder as a recovering cylinder Note 1 A cylinder available when R410A was purchased is a borrowed one Note 2 As a cylinder ava...

Page 125: ... piercing valve a A tool used to make a hole for recovery in the copper pipe when recovering R410A from equipment which has no port for charging or recovering gas Various types are available on the market and given various names b As the piercing edge tends to wear it is necessary to treat this valve as semi expendables c As vacuum rises air tends to be inhaled from the hole So care must be exerci...

Page 126: ...MEMO ...

Page 127: ...INVERTER MULTI SPLIT SYSTEM ROOM AIR CONDITIONER Air Conditioning Refrigeration Systems Headquarters 16 5 2 chome Kounan Minato ku Tokyo 108 8215 Japan Fax 03 6716 5926 ...

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