Fujitsu Airstage j-ii series Service manual

Small VRF system

for light commercial and home use

DESIGN & TECHNICAL MANUAL

CONTENTS
GENERAL INFORMATION
MODEL SELECTION
OUTDOOR UNITS
INDOOR UNITS
CONTROL SYSTEM
SYSTEM DESIGN
FUNCTION SETTING 
EXTERNAL INPUT & OUTPUT
NOTES
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