Fujitsu Airstage J-II Series Service manual

Small VRF system
for light commercial and home use
DESIGN & TECHNICAL MANUAL

CONTENTS
1. GENERAL INFORMATION
2. MODEL SELECTION
3. OUTDOOR UNITS
4. INDOOR UNITS
4. CONTROL SYSTEM
6. SYSTEM DESIGN
5. FUNCTION SETTING
8. EXTERNAL INPUT & OUTPUT
9. NOTES
10. OPTIONAL PARTS

CONTENTS
1. GENERAL INFORMATION
1. MODEL LINE UP....................................................................... 01-03
1-1. OUTDOOR UNIT .............................................................................................01-03
1-2. INDOOR UNIT .................................................................................................01-04
1-3. CONTROLLER ................................................................................................01-07
1-4. ADAPTOR / CONVERTOR / MAINTENANCE TOOL.....................................01-09
1-5. BRANCH KIT...................................................................................................01-11
1-6. CASSETTE GRILLE........................................................................................01-12
1-7. OTHERS (optional parts)...............................................................................01-13

CONTENTS
2. MODEL SELECTION
1. MODEL SELECTION PROCEDURE............................................. 02 - 01
2. MODEL LINE UP........................................................................... 02 - 02
2-1. OUTDOOR UNIT............................................................................... 02 - 02
2-2. INDOOR UNIT................................................................................... 02 - 03
2-3. OPTIONAL PARTS........................................................................... 02 - 05
3. MODEL SELECTION AND CAPACITY CALCULATION .............. 02 - 07
3-1. SELECTION PROCEDURE OF INDOOR UNIT AND OUTDOOR UNIT...
........................................................................................................... 02 - 07
3-2. METHOD OF CAPACITY CALCULATION ....................................... 02 - 09
3-3. THE EXAMPLE OF CALCULATION ................................................ 02 - 10
4. CAPACITY TABLE COOLING (OUTDOOR UNIT) ....................... 02 - 12
5. CAPACITY TABLE HEATING (OUTDOOR UNIT) ........................ 02 - 21
6. CAPACITY COMPENSATION COEFFICIENT.............................. 02 - 27
7. CAPACITY TABLE COOLING (INDOOR UNIT) ........................... 02 - 29
7-1. COMPACT CASSETTE TYPE.......................................................... 02 - 29
7-2. CIRCULAR FLOW CASSETTE TYPE ............................................. 02 - 31
7-3. CASSETTE TYPE............................................................................. 02 - 33
7-4. MINI DUCT TYPE ............................................................................. 02 - 35
7-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ........................... 02 - 36
7-6. MEDIUM STATIC PRESSURE DUCT TYPE .................................... 02 - 38
7-7. HIGH STATIC PRESSURE DUCT TYPE.......................................... 02 - 39
7-8. VERTICAL AIR HANDLER TYPE .................................................... 02 - 40
7-9. COMPACT FLOOR TYPE ................................................................ 02 - 42
7-10. FLOOR / CEILING TYPE.................................................................. 02 - 44
7-11. CEILING TYPE ................................................................................. 02 - 45
7-12. WALL MOUNTED TYPE................................................................... 02 - 46

CONTENTS
2. MODEL SELECTION
8. CAPACITY TABLE HEATING (INDOOR UNIT) ............................ 02 - 51
8-1. COMPACT CASSETTE TYPE.......................................................... 02 - 51
8-2. CIRCULAR FLOW CASSETTE TYPE ............................................. 02 - 53
8-3. CASSETTE TYPE............................................................................. 02 - 55
8-4. MINI DUCT TYPE ............................................................................. 02 - 57
8-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ........................... 02 - 58
8-6. MEDIUM STATIC PRESSURE DUCT TYPE .................................... 02 - 60
8-7. HIGH STATIC PRESSURE DUCT TYPE.......................................... 02 - 61
8-8. VERTICAL AIR HANDLER TYPE .................................................... 02 - 62
8-9. COMPACT FLOOR TYPE ................................................................ 02 - 64
8-10. FLOOR / CEILING TYPE.................................................................. 02 - 66
8-11. CEILING TYPE ................................................................................. 02 - 67
8-12. WALL MOUNTED TYPE................................................................... 02 - 68

CONTENTS
3. OUTDOOR UNITS
1. SPECIFICATIONS .................................................................... 03 - 01
2. DIMENSIONS ........................................................................... 03 - 03
3. INSTALLATION SPACE ........................................................... 03 - 04
3-1. SINGLE OUTDOOR UNIT INSTALLATION ................................................. 03 - 04
3-2. MULTIPLE OUTDOOR UNIT INSTALLATION............................................. 03 - 05
3-3. OUTDOOR UNITS INSTALLATION IN MULTI ROW................................... 03 - 05
4. REFRIGERANT CIRCUIT ........................................................ 03 - 06
5. WIRING DIAGRAM .................................................................. 03 - 08
6. OPERATION RANGE............................................................... 03 - 10
7. NOISE LEVEL CURVE............................................................. 03 - 11
8. ELECTRIC CHARACTERISTICS............................................. 03 - 14
9. SAFETY DEVICES ................................................................... 03 - 15

CONTENTS
4. INDOOR UNITS
1. SPECIFICATIONS .................................................................... 04-01
1-1. COMPACT CASSETTE TYPE........................................................................04-01
1-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-03
1-3. CASSETTE TYPE...........................................................................................04-04
1-4. MINI DUCT TYPE ...........................................................................................04-06
1-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-07
1-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-09
1-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-10
1-8. VERTICAL AIR HANDLER TYPE ..................................................................04-12
1-9. COMPACT FLOOR TYPE ..............................................................................04-14
1-10. FLOOR / CEILING TYPE................................................................................04-15
1-11. CEILING TYPE ...............................................................................................04-16
1-12. WALL MOUNTED TYPE ...............................................................................04-17
2. ELECTRIC CHARACTERISTICS............................................. 04-22
3. DIMENSIONS ........................................................................... 04-24
3-1. COMPACT CASSETTE TYPE........................................................................04-24
3-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-26
3-3. CASSETTE TYPE...........................................................................................04-30
3-4. MINI DUCT TYPE ...........................................................................................04-33
3-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-35
3-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-39
3-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-41
3-8. VERTICAL AIR HANDLER TYPE ..................................................................04-46
3-9. COMPACT FLOOR TYPE .............................................................................04-52
3-10. FLOOR / CEILING TYPE................................................................................04-54
3-11. CEILING TYPE ...............................................................................................04-56
3-12. WALL MOUNTED TYPE ................................................................................04-58

CONTENTS
4. INDOOR UNITS
4. WIRING DIAGRAMS................................................................ 04-70
4-1. COMPACT CASSETTE TYPE........................................................................04-70
4-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-72
4-3. CASSETTE TYPE...........................................................................................04-73
4-4. MINI DUCT TYPE ...........................................................................................04-74
4-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-75
4-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-76
4-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-77
4-8. VERTICAL AIR HANDLER TYPE ..................................................................04-79
4-9. COMPACT FLOOR TYPE ..............................................................................04-80
4-10. FLOOR / CEILING TYPE................................................................................04-81
4-11. CEILING TYPE ...............................................................................................04-82
4-12. WALL MOUNTED TYPE ................................................................................04-83
5. AIR VELOCITY AND TEMPERATURE DISTRIBUTIONS ........ 04-89
5-1. COMPACT CASSETTE TYPE........................................................................04-89
5-2. CIRCULAR FLOW CASSETTE TYPE ......................................................... 04-103
5-3. CASSETTE TYPE......................................................................................... 04-113
5-4. MINI DUCT TYPE with Auto louver grille kit ............................................. 04-121
5-5. SLIM DUCT TYPE with Auto louver grille kit ............................................ 04-123
5-6. COMPACT FLOOR TYPE ...........................................................................04-133
5-7. FLOOR / CEILING TYPE.............................................................................. 04-137
5-8. CEILING TYPE .............................................................................................04-143
5-9. WALL MOUNTED TYPE ............................................................................. 04-145
6. FAN PERFORMANCE CURVE ................................................ 04-159
6-1. MINI DUCT TYPE .........................................................................................04-159
6-2. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ....................................... 04-161
6-3. MEDIUM STATIC PRESSURE DUCT TYPE................................................ 04-171
6-4. HIGH STATIC PRESSURE DUCT TYPE ..................................................... 04-177
6-5. VERTICAL AIR HANDLER TYPE ................................................................04-184
6-6. CEILING TYPE (FRESH AIR) ......................................................................04-198
6-7. CASSETTE TYPE (FRESH AIR).................................................................. 04-199

CONTENTS
4. INDOOR UNITS
7. AIR FLOW ............................................................................... 04-200
8. NOISE LEVEL CURVE............................................................. 04-202
8-1. COMPACT CASSETTE TYPE...................................................................... 04-202
8-2. CIRCULAR FLOW CASSETTE TYPE ......................................................... 04-204
8-3. CASSETTE TYPE.........................................................................................04-206
8-4. MINI DUCT TYPE .........................................................................................04-207
8-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ....................................... 04-208
8-6. MEDIUM STATIC PRESSURE DUCT TYPE................................................ 04-210
8-7. HIGH STATIC PRESSURE DUCT TYPE ..................................................... 04-211
8-8. VERTICAL AIR HANDLER TYPE ................................................................04-213
8-9. COMPACT FLOOR TYPE ............................................................................04-215
8-10. FLOOR / CEILING TYPE..............................................................................04-217
8-11. CEILING TYPE .............................................................................................04-218
8-12. WALL MOUNTED TYPE .............................................................................. 04-219
9. SAFETY DEVICES ................................................................... 04-225

CONTENTS
3. OUTDOOR UNITS
1. SPECIFICATIONS .................................................................... 03 - 01
2. DIMENSIONS ........................................................................... 03 - 03
3. INSTALLATION SPACE ........................................................... 03 - 04
3-1. SINGLE OUTDOOR UNIT INSTALLATION ................................................. 03 - 04
3-2. MULTIPLE OUTDOOR UNIT INSTALLATION............................................. 03 - 05
3-3. OUTDOOR UNITS INSTALLATION IN MULTI ROW................................... 03 - 05
4. REFRIGERANT CIRCUIT ........................................................ 03 - 06
5. WIRING DIAGRAM .................................................................. 03 - 08
6. OPERATION RANGE............................................................... 03 - 10
7. NOISE LEVEL CURVE............................................................. 03 - 11
8. ELECTRIC CHARACTERISTICS............................................. 03 - 14
9. SAFETY DEVICES ................................................................... 03 - 15

CONTENTS
4. INDOOR UNITS
1. SPECIFICATIONS .................................................................... 04-01
1-1. COMPACT CASSETTE TYPE........................................................................04-01
1-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-03
1-3. CASSETTE TYPE...........................................................................................04-04
1-4. MINI DUCT TYPE ...........................................................................................04-06
1-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-07
1-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-09
1-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-10
1-8. VERTICAL AIR HANDLER TYPE ..................................................................04-12
1-9. COMPACT FLOOR TYPE ..............................................................................04-14
1-10. FLOOR / CEILING TYPE................................................................................04-15
1-11. CEILING TYPE ...............................................................................................04-16
1-12. WALL MOUNTED TYPE ...............................................................................04-17
2. ELECTRIC CHARACTERISTICS............................................. 04-22
3. DIMENSIONS ........................................................................... 04-24
3-1. COMPACT CASSETTE TYPE........................................................................04-24
3-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-26
3-3. CASSETTE TYPE...........................................................................................04-30
3-4. MINI DUCT TYPE ...........................................................................................04-33
3-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-35
3-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-39
3-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-41
3-8. VERTICAL AIR HANDLER TYPE ..................................................................04-46
3-9. COMPACT FLOOR TYPE .............................................................................04-52
3-10. FLOOR / CEILING TYPE................................................................................04-54
3-11. CEILING TYPE ...............................................................................................04-56
3-12. WALL MOUNTED TYPE ................................................................................04-58

CONTENTS
4. INDOOR UNITS
4. WIRING DIAGRAMS................................................................ 04-70
4-1. COMPACT CASSETTE TYPE........................................................................04-70
4-2. CIRCULAR FLOW CASSETTE TYPE ...........................................................04-72
4-3. CASSETTE TYPE...........................................................................................04-73
4-4. MINI DUCT TYPE ...........................................................................................04-74
4-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE .........................................04-75
4-6. MEDIUM STATIC PRESSURE DUCT TYPE..................................................04-76
4-7. HIGH STATIC PRESSURE DUCT TYPE .......................................................04-77
4-8. VERTICAL AIR HANDLER TYPE ..................................................................04-79
4-9. COMPACT FLOOR TYPE ..............................................................................04-80
4-10. FLOOR / CEILING TYPE................................................................................04-81
4-11. CEILING TYPE ...............................................................................................04-82
4-12. WALL MOUNTED TYPE ................................................................................04-83
5. AIR VELOCITY AND TEMPERATURE DISTRIBUTIONS ........ 04-89
5-1. COMPACT CASSETTE TYPE........................................................................04-89
5-2. CIRCULAR FLOW CASSETTE TYPE ......................................................... 04-103
5-3. CASSETTE TYPE......................................................................................... 04-113
5-4. MINI DUCT TYPE with Auto louver grille kit ............................................. 04-121
5-5. SLIM DUCT TYPE with Auto louver grille kit ............................................ 04-123
5-6. COMPACT FLOOR TYPE ...........................................................................04-133
5-7. FLOOR / CEILING TYPE.............................................................................. 04-137
5-8. CEILING TYPE .............................................................................................04-143
5-9. WALL MOUNTED TYPE ............................................................................. 04-145
6. FAN PERFORMANCE CURVE ................................................ 04-159
6-1. MINI DUCT TYPE .........................................................................................04-159
6-2. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ....................................... 04-161
6-3. MEDIUM STATIC PRESSURE DUCT TYPE................................................ 04-171
6-4. HIGH STATIC PRESSURE DUCT TYPE ..................................................... 04-177
6-5. VERTICAL AIR HANDLER TYPE ................................................................04-184
6-6. CEILING TYPE (FRESH AIR) ......................................................................04-198
6-7. CASSETTE TYPE (FRESH AIR).................................................................. 04-199

CONTENTS
4. INDOOR UNITS
7. AIR FLOW ............................................................................... 04-200
8. NOISE LEVEL CURVE............................................................. 04-202
8-1. COMPACT CASSETTE TYPE...................................................................... 04-202
8-2. CIRCULAR FLOW CASSETTE TYPE ......................................................... 04-204
8-3. CASSETTE TYPE.........................................................................................04-206
8-4. MINI DUCT TYPE .........................................................................................04-207
8-5. SLIM DUCT / SLIM CONCEALED FLOOR TYPE ....................................... 04-208
8-6. MEDIUM STATIC PRESSURE DUCT TYPE................................................ 04-210
8-7. HIGH STATIC PRESSURE DUCT TYPE ..................................................... 04-211
8-8. VERTICAL AIR HANDLER TYPE ................................................................04-213
8-9. COMPACT FLOOR TYPE ............................................................................04-215
8-10. FLOOR / CEILING TYPE..............................................................................04-217
8-11. CEILING TYPE .............................................................................................04-218
8-12. WALL MOUNTED TYPE .............................................................................. 04-219
9. SAFETY DEVICES ................................................................... 04-225

CONTENTS
5. CONTROL SYSTEM
1. CONTROL SYSTEM ................................................................ 05 - 01
1-1. LINE UP OF CONTROLLERS .................................................................... 05 - 01
1-2. CONTROL SYSTEM DESIGN..................................................................... 05 - 03
1-3. SYSTEM CONFIGURATION EXAMPLES .................................................. 05 - 04
1-4. CONTROL SYSTEM FEATURES ............................................................... 05 - 10
1-5. WIRING SYSTEM........................................................................................ 05 - 11
1-6. CONTROL EQUIPMENT DESIGN LIMITATION ......................................... 05 - 12
2. CONTROL UNITS .................................................................... 05 - 13
2-1. SYSTEM CONTROLLER ............................................................................ 05 - 14
2-1-1. MODEL: UTY-APGXZ1
(Option: UTY-PEGXZ1, UTY-PPGXP2).......................................................05 - 14
2-1-2. MODEL: UTY-APGX (Option: UTY-PEGX).........................................................05 - 19
2-2. SYSTEM CONTROLLER LITE ................................................................... 05 - 23
2-2-1. MODEL: UTY-ALGXZ1
(Option: UTY-PLGXA2, UTY-PLGXR2, UTY-PLGXE2,
UTY-PLGXP2, UTY-PLGXX2) ............................................................................ 05 - 23
2-2-2. MODEL: UTY-ALGX
(Option: UTY-PLGXA1, UTY-PLGXR1, UTY-PLGXE1) ..................................... 05 - 29
2-3. TOUCH PANEL CONTROLLER ................................................................. 05 - 34
2-4. CENTRAL REMOTE CONTROLLER ......................................................... 05 - 49
2-5. WIRED REMOTE CONTROLLER (Touch panel) ...................................... 05 - 57
2-6. WIRED REMOTE CONTROLLER............................................................... 05 - 64
2-7. SIMPLE REMOTE CONTROLLER (With Operation mode) ..................... 05 - 69
2-7-1. MODEL: UTY-RSRY ............................................................................................05 - 69
2-7-2. MODEL: UTY-RSKU ............................................................................................05 - 74
2-8. SIMPLE REMOTE CONTROLLER (Without Operation mode)................ 05 - 78
2-8-1. MODEL: UTY-RHRY ............................................................................................05 - 78
2-8-2. MODEL: UTY-RHKU ............................................................................................05 - 83
2-9. WIRELESS REMOTE CONTROLLER........................................................ 05 - 87
2-10. IR RECEIVER UNIT (for ALL DUCT TYPE) ............................................... 05 - 91
2-11. IR RECEIVER UNIT (for CASSETTE TYPE).............................................. 05 - 94
2-12. IR RECEIVER UNIT (for CIRCULAR FLOW CASSETTE TYPE) .............. 05 - 96
2-13. HUMAN SENSOR KIT (for CIRCULAR FLOW CASSETTE TYPE) .......... 05 - 98
2-14. REMOTE SENSOR UNIT.......................................................................... 05 - 100

CONTENTS
5. CONTROL SYSTEM
2-15. PRESSURE SENSOR KIT ........................................................................ 05 - 102
2-16. GROUP CONTROL METHOD ...................................................................05 - 112
2-17. COMPARISON TABLE OF CONTROLLERS ............................................05 - 114
3. ADAPTOR / CONVERTOR UNITS ......................................... 05 - 116
3-1. NETWORK CONVERTOR .........................................................................05 - 117
3-2. NETWORK CONVERTOR ........................................................................ 05 - 122
3-3. MODBUS®CONVERTOR FOR VRF......................................................... 05 - 126
3-4. NETWORK CONVERTOR FOR LONWORKS®....................................... 05 - 135
3-5. THERMOSTAT CONVERTOR................................................................... 05 - 146
3-6. BACnet®GATEWAY (HARDWARE) ........................................................ 05 - 152
3-7. BACnet®GATEWAY (SOFTWAER).......................................................... 05 - 161
3-7-1. MODEL: UTY-ABGXZ1...................................................................................... 05 - 161
3-7-2. MODEL: UTY-ABGX......................................................................................... 05 - 166
3-8. SIGNAL AMPLIFIER ................................................................................. 05 - 171
3-9. EXTERNAL SWITCH CONTROLLER ...................................................... 05 - 175
3-9-1. MODEL: UTY-TERX........................................................................................... 05 - 175
3-9-2. MODEL: UTY-TEKX........................................................................................... 05 - 181
4. SERVICE & WEB MONITORING TOOL.................................05 - 185
4-1. SERVICE TOOL ........................................................................................ 05 - 185
4-1-1. MODEL: UTY - ASGXZ1.................................................................................... 05 - 185
4-1-2. MODEL: UTY - ASGX ........................................................................................ 05 - 190
4-2. WEB MONITORING TOOL ....................................................................... 05 - 194
4-2-1. MODEL: UTY-AMGXZ1 ..................................................................................... 05 - 194
4-2-2. MODEL: UTY-AMGX ......................................................................................... 05 - 197

CONTENTS
6. SYSTEM DESIGN
CONTENTS
6. SYSTEM DESIGN
1. SYSTEM DESIGN ......................................................................... 06 - 01
1-1. REFRIGERANT SYSTEM ...................................................................... 06 - 01
1-2. VRF NETWORK SYSTEM ..................................................................... 06 - 04
1-3. MOUNTING POSITION .......................................................................... 06 - 10
2. PIPING DESIGN ............................................................................ 06 - 12
2-1. IMPORTANT ITEMS WHEN USING REFRIGERANT R410A ............... 06 - 12
2-2. PIPING LIMITATION............................................................................... 06 - 14
2-3. PIPE SIZE............................................................................................... 06 - 16
2-4. SELECTION OF PIPE HEAT INSULATING MATERIAL........................ 06 - 20
2-5. ADDITIONAL CHARGE CALCULATION .............................................. 06 - 21
2-6. EXAMPLE OF PIPING DESIGN ............................................................ 06 - 22
3. PIPING CONNECTION.................................................................. 06 - 26
3-1. CAUTION OF PIPING ............................................................................ 06 - 26
3-2. PIPING TO OUTDOOR UNIT................................................................. 06 - 28
3-3. SEPARATION TUBE .............................................................................. 06 - 31
3-4. HEADER................................................................................................. 06 - 34
4. WIRING DESIGN........................................................................... 06 - 37
4-1. ELECTRICAL WIRING........................................................................... 06 - 37
4-2. POWER SUPPLY CABLE WIRING........................................................ 06 - 39
4-3. TRANSMISSION LINE........................................................................... 06 - 42
4-4. CONTROLLER CABLE WIRING ........................................................... 06 - 50
5. DRAIN CONNECTION .................................................................. 06 - 52
5-1. OUTDOOR UNIT .................................................................................... 06 - 52
5-2. INDOOR UNIT ........................................................................................ 06 - 53
6. STANDARD ACCESSORIES ........................................................ 06 - 66
6-1. OUTDOOR UNIT .................................................................................... 06 - 66
6-2. INDOOR UNIT ........................................................................................ 06 - 67

CONTENTS
7. FUNCTION SETTING
1. SYSTEM SETTING................................................................... 07 - 01
1-1. SYSTEM TYPE SETTING............................................................................ 07 - 01
1-2. ADDRESS SETTING ................................................................................... 07 - 03
1-3. MANUAL ADDRESS SETTING METHOD .................................................. 07 - 07
1-4. ADDRESS SETTING BY REMOTE CONTROLLER ................................... 07 - 16
1-4-1. WIRELESS REMOTE CONTROLLER ................................................................07 - 16
1-4-2.WIRED REMOTE CONTROLLER (UTY-RNKU) .................................................07 - 23
1-4-3.WIRED REMOTE CONTROLLER (UTY-RNRUZ*)............................................... 07 - 28
1-4-4.SIMPLE REMOTE CONTROLLER (UTY-RSRY, UTY-RHRY)............................07 - 33
1-4-5.SIMPLE REMOTE CONTROLLER (UTY-RSKU, UTY-RHKU) ...........................07 - 39
1-5. AUTOMATIC ADDRESS SETTING ............................................................. 07 - 44
1-5-1. SIGNAL AMPLIFIER AUTOMATIC ADDRESS SETTING..................................07 - 46
1-5-2. INDOOR UNIT AUTOMATIC ADDRESS SETTING ............................................07 - 48
1-5-3. RB UNIT AUTOMATIC ADDRESS SETTING .....................................................07 - 50
1-5-4.EXAMPLE FLOW.................................................................................................07 - 52
1-6. TERMINAL RESISTOR SETTING............................................................... 07 - 55
1-7. INDOOR UNIT CONNECTION CHECK....................................................... 07 - 56
2. FUNCTION SETTING............................................................... 07 - 58
2-1. OUTDOOR UNIT.......................................................................................... 07 - 58
2-1-1. VR-II series..........................................................................................................07 - 61
2-1-2. V-II (230V) series.................................................................................................07 - 66
2-1-3. V-II (460V) series.................................................................................................07 - 70
2-1-4. J-II series.............................................................................................................07 - 74
2-2. INDOOR UNIT (setting by switch) ............................................................. 07 - 79
2-3. INDOOR UNIT (setting by wireless remote controller)............................ 07 - 89
2-4. INDOOR UNIT (setting by wired remote controller [Touch panel]) ........ 07 - 96
2-5. INDOOR UNIT (setting by wired remote controller) .............................. 07 - 100
2-6. INDOOR UNIT (setting by UTY-RSRY, UTY-RHRY) ................................ 07 - 104
2-7. INDOOR UNIT (setting by UTY-RSKU, UTY-RHKU) ............................... 07 - 108
2-8. FUNCTION DETAILS..................................................................................07 - 112
2-9. RB UNIT......................................................................................................07 - 116

CONTENTS
7. FUNCTION SETTING
2-10. WIRED REMOTE CONTROLLER (UTY-RNKU) ........................................07 - 119
2-11. SIMPLE REMOTE CONTROLLER ............................................................ 07 - 121
2-12. TOUCH PANEL CONTROLLER ................................................................ 07 - 123
2-13. CENTRAL REMOTE CONTROLLER ........................................................ 07 - 124
2-14. WIRED REMOTE CONTROLLER (Touch panel) ..................................... 07 - 125
2-14-1. REMOTE CONTROLLER ADDRESS SETTING ............................................. 07 - 125
2-14-2. REMOTE CONTROLLER MASTER/SLAVE SETTING................................... 07 - 127
2-14-3.INDOOR UNIT ADDRESS VERIFICATION ..................................................... 07 - 128
2-15. SIMPLE REMOTE CONTROLLER (UTY-RSRY, UTY-RHRY) .................. 07 - 129
2-15-1. REMOTE CONTROLLER ADDRESS SETTING ............................................. 07 - 129
2-15-2. REMOTE CONTROLLER MASTER/SLAVE SETTING................................... 07 - 131
2-15-3.INDOOR UNIT ADDRESS VERIFICATION ..................................................... 07 - 132
2-16. NETWORK CONVERTOR......................................................................... 07 - 133
2-16-1. MODEL: UTY-VTGX......................................................................................... 07 - 133
2-16-2. MODEL: UTY-VGGXZ1 .................................................................................... 07 - 134
2-17. SIGNAL AMPLIFIER.................................................................................. 07 - 135
2-18. MODBUS®CONVERTOR FOR VRF ......................................................... 07 - 137
2-19. NETWORK CONVERTOR FOR LONWORKS®........................................ 07 - 139
2-20. THERMOSTAT CONVERTOR ................................................................... 07 - 140
2-21. DUCT STATIC PRESSURE SETTING....................................................... 07 - 142
2-22. ADMINISTRATIVE INDOOR UNIT SETTING............................................ 07 - 143
2-22-1. SETTING METHOD.......................................................................................... 07 - 144
2-23. ENERGY SAVING SETTING (SYSTEM CONTROLLER).......................... 07 - 147
2-24. ELECTRICITY CHARGE APPORTIONMENT SETTING (SYSTEM
CONTROLLER, TOUCH PANEL CONTROLLER)..................................... 07 - 154

CONTENTS
8. EXTERNAL INPUT & OUTPUT
1. EXTERNAL INPUT & OUTPUT ............................................... 08 - 01
1-1. OUTDOOR UNIT.......................................................................................... 08 - 01
1-1-1. EXTERNAL INPUT ..............................................................................................08 - 03
1-1-2. EXTERNAL OUTPUT ..........................................................................................08 - 05
1-1-3. OPTIONAL PARTS..............................................................................................08 - 06
1-1-4. OUTDOOR UNIT EXTERNAL INPUT / OUTPUT FUNCTION SUMMARY ........08 - 07
1-2. INDOOR UNIT.............................................................................................. 08 - 08
1-2-1. EXTERNAL INPUT ..............................................................................................08 - 08
1-2-2. EXTERNAL OUTPUT .......................................................................................... 08 - 11
1-2-3. COMBINATION OF EXTERNAL INPUT AND OUTPUT .....................................08 - 12
1-2-4. INDOOR UNIT EXTERNAL INPUT / OUTPUT FUNCTION SUMMARY ............08 - 13
1-2-5. OPTIONAL PARTS..............................................................................................08 - 13
1-2-6. DETAILS OF FUNCTION.....................................................................................08 - 14
1-3. RB UNIT....................................................................................................... 08 - 44
1-3-1. EXTERNAL INPUT ..............................................................................................08 - 44
1-3-2. OPTIONAL PARTS..............................................................................................08 - 47
1-4. TOUCH PANEL CONTROLLER .................................................................. 08 - 48
1-4-1. EXTERNAL INPUT ..............................................................................................08 - 48
1-4-2. EXTERNAL OUTPUT ..........................................................................................08 - 52
1- 4-3. PARTS..................................................................................................................08 - 52
1-5. CENTRAL REMOTE CONTROLLER .......................................................... 08 - 53
1-5-1. EXTERNAL INPUT ..............................................................................................08 - 53
1-5-2. EXTERNAL OUTPUT ..........................................................................................08 - 56
1-5-3. PARTS..................................................................................................................08 - 56
1-5-4. CONTROLLER EXTERNAL INPUT / OUTPUT FUNCTION SUMMARY ...........08 - 57

CONTENTS
9. NOTES
1. REFRIGERANT CONCENTRATION PRECAUTIONS ............. 09-01
1-1. INTRODUCTION............................................................................................09-01
1-2. CHECKING CONCENTRATION LIMIT..........................................................09-02
1-3. REFRIGERATION CONCENTRATION COUNTERMEASURES ..................09-03
2. INSTALLATION PRECAUTIONS.............................................. 09-04
2-1. INDOOR UNIT INSTALLATION PRECAUTIONS ..........................................09-04
2-2. OUTDOOR UNIT INSTALLATION PRECAUTIONS ......................................09-07
3. COMPATIBILITY OF VRF SYSTEM.......................................... 09-08
4. ABOUT CONNECTION BETWEEN SERIES.............................09-11
4-1. PIPING CONNECTION ..................................................................................09-11
4-2. WIRING CONNECTION.................................................................................09-12