Fujitsu AIRSTAGE V-II Instruction manual

VD011E/06
Large Capacity Multi VRF System
DC Inverter Control Compressor
Long Piping System Design
High Efficiency Refrigerant R410A
DESIGN & TECHNICAL DATA
FUJITSU GENERAL LIMITED

CONTENTS
GENERAL INFORMATION1.
1-1. FEATURES OF SYSTEM ····························································· 01 - 01
1-1-1. HIGH EFFICIENCY OPERATION ······························································ 01 - 01
1-1-2. HIGH DESIGN FREEDOM ········································································ 01 - 03
1-1-3. HIGH RELIABILITY ·················································································· 01 - 05
1-1-4. EASY INSTALLATION ·············································································· 01 - 07
1-1-5. MORE COMFORT & CONVENIENCE ······················································ 01 - 09
1-1-6. EASY SERVICE & MAINTENANCE ························································· 01 - 11
1-2. MODEL LINE UP ········································································· 01 - 13
1-2-1. OUTDOOR UNIT ······················································································· 01 - 13
1-2-2. INDOOR UNIT ··························································································· 01 - 15
1-2-3. CONTROLLER ··························································································· 01 - 17
1-2-4. ADAPTOR / CONVERTOR/ MAINTENANCE ············································ 01 - 18
1-2-5. BRANCH KIT ····························································································· 01 - 19
1-2-6. OTHERS (Optional parts) ·············································································· 01 - 20
MODEL SELECTION2.
2-1. MODEL SELECTION PROCEDURE ············································ 02 - 01
2-2. MODEL LINE UP ·········································································· 02 - 02
2-2-1. OUTDOOR UNIT ························································································ 02 - 02
2-2-2. INDOOR UNIT ···························································································· 02 - 04
2-2-3. OPTIONAL PARTS ···················································································· 02 - 05
2-3. MODEL SELECTION AND CAPACITY CALCULATION ············ 02 - 06
2-3-1. SELECTION PROCEDURE OF INDOOR UNIT AND OUTDOOR UNIT ·· 02 - 06
2-3-2. METHOD OF CAPACITY CALCULATION ················································ 02 - 08
2-3-3. THE EXAMPLE OF CALCULATION ························································· 02 - 09
2-4. CAPACITY TABLE COOLING (Outdoor unit) ····································· 02 - 12
2-4-1. SPACE SAVING COMBINATION ······························································ 02 - 12
2-4-2. ENERGY EFFICIENCY COMBINATION ··················································· 02 - 54
2-5. CAPACITY TABLE HEATING (Outdoor unit) ····································· 02 - 78
2-5-1. SPACE SAVING COMBINATION ······························································ 02 - 78
2-5-2. ENERGY EFFICIENCY COMBINATION ················································· 02 - 120
2-6. CAPACITY COMPENSATION COEFFICIENT ··························· 02 - 144

CONTENTS
2-7. CAPACITY TABLE COOLING (Indoor unit) ····································· 02 - 145
2-7-1. COMPACT CASSETTE TYPE ·································································· 02 - 145
2-7-2. CASSETTE TYPE ····················································································· 02 - 147
2-7-3. COMPACT DUCT TYPE ··········································································· 02 - 149
2-7-4. LOW STATIC PRESSURE DUCT TYPE ·················································· 02 - 151
2-7-5. DUCT TYPE ······························································································ 02 - 152
2-7-6. HIGH STATIC PRESSURE DUCT TYPE ················································· 02 - 153
2-7-7. FLOOR / CEILING TYPE ·········································································· 02 - 155
2-7-8. CEILING TYPE ························································································· 02 - 156
2-7-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ····························· 02 - 157
2-7-10. COMPACT WALL MOUNTED TYPE (EEV external model) ··························· 02 - 158
2-7-11. WALL MOUNTED TYPE ········································································· 02 - 159
2-8. CAPACITY TABLE HEATING (Indoor unit) ····································· 02 - 160
2-8-1. COMPACT CASSETTE TYPE ································································· 02 - 160
2-8-2. CASSETTE TYPE ···················································································· 02 - 162
2-8-3. COMPACT DUCT TYPE ·········································································· 02 - 164
2-8-4. LOW STATIC PRESSURE DUCT TYPE ················································· 02 - 166
2-8-5. DUCT TYPE ····························································································· 02 - 167
2-8-6. HIGH STATIC PRESSURE DUCT TYPE ················································· 02 - 168
2-8-7. FLOOR / CEILING TYPE ·········································································· 02 - 170
2-8-8. CEILING TYPE ························································································ 02 - 171
2-8-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ····························· 02 - 172
2-8-10. COMPACT WALL MOUNTED TYPE (EEV external model) ·························· 02 - 173
2-8-11. WALL MOUNTED TYPE ········································································ 02 - 174
OUTDOOR UNITS3.
3-1. SPECIFICATIONS ········································································ 03 - 01
3-1-1. SPACE SAVING COMBINATION ······························································· 03 - 01
3-1-2. ENERGY EFFICIENCY COMBINATION ···················································· 03 - 07
3-2. DIMENSIONS ··············································································· 03 - 11
3-2-1. SINGLE UNIT ····························································································· 03 - 11
3-2-2. COMBINATION ·························································································· 03 - 17
3-3. INSTALLATION SPACE ······························································· 03 - 24
3-3-1. WHEN INSTALL NEAR BY LIMITED HEIGHT WALL ································ 03 - 24
3-3-2. WHEN INSTALL NEAR BY UNLIMITED HEIGHT WALL ·························· 03 - 26
3-3-3. WHEN THERE IS AN OBSTRUCTION ABOVE THE PRODUCT ·············· 03 - 28
3-3-4. CONCENTRATED INSTALLATION EXAMPLE ········································· 03 - 29
3-3-5. INSTALLATION ON EACH FLOOR ··························································· 03 - 32
3-4. REFRIGERANT CIRCUIT ···························································· 03 - 33
3-5. WIRING DIAGRAM ······································································ 03 - 37

CONTENTS
3-6. OPERATION RANGE ·································································· 03 - 40
3-7. NOISE LEVEL CURVE ································································ 03 - 41
3-8. ELECTRIC CHARACTERISTICS ················································ 03 - 45
3-9. SAFETY DEVICES ······································································· 03 - 48
3-10. LOCALLY PROCURED PARTS ················································· 03 - 49
3-10-1. AIR DISCHARGE DUCT ·········································································· 03 - 49
3-10-2. SNOW HOOD ···························································································· 03 - 51
3-10-3. PRESSURE GAUGE ················································································· 03 - 54
3-10-4. CENTRAL DRAIN PAN ············································································ 03 - 56
INDOOR UNITS4.
4-1. FEATURES ··················································································· 04 - 01
4-1-1. COMPACT CASSETTE TYPE ··································································· 04 - 01
4-1-2. CASSETTE TYPE ······················································································ 04 - 02
4-1-3. COMPACT DUCT TYPE ············································································ 04 - 03
4-1-4. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 04
4-1-5. DUCT TYPE ······························································································· 04 - 04
4-1-6. HIGH STATIC PRESSURE DUCT TYPE ·················································· 04 - 05
4-1-7. FLOOR / CEILING TYPE ··········································································· 04 - 06
4-1-8. CEILING TYPE ·························································································· 04 - 07
4-1-9. COMPACT WALL MOUNTED TYPE ························································ 04 - 08
4-1-10. WALL MOUNTED TYPE ·········································································· 04 - 09
4-2. SPECIFICATIONS ········································································ 04 - 10
4-2-1. COMPACT CASSETTE TYPE ··································································· 04 - 10
4-2-2. CASSETTE TYPE ······················································································ 04 - 11
4-2-3. COMPACT DUCT TYPE ············································································ 04 - 13
4-2-4. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 14
4-2-5. DUCT TYPE ······························································································· 04 - 15
4-2-6. HIGH STATIC PRESSURE DUCT TYPE ·················································· 04 - 16
4-2-7. FLOOR / CEILING TYPE ··········································································· 04 - 17
4-2-8. CEILING TYPE ·························································································· 04 - 18
4-2-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ······························· 04 - 19
4-2-10. COMPACT WALL MOUNTED TYPE (EEV external model) ···························· 04 - 20
4-2-11. WALL MOUNTED TYPE ·········································································· 04 - 21
4-3. ELECTRIC CHARACTERISTICS ················································ 04 - 22

CONTENTS
4-4. DIMENSIONS ··············································································· 04 - 23
4-4-1. COMPACT CASSETTE TYPE ··································································· 04 - 23
4-4-2. CASSETTE TYPE ····················································································· 04 - 25
4-4-3. COMPACT DUCT TYPE ············································································ 04 - 28
4-4-4. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 32
4-4-5. DUCT TYPE ······························································································ 04 - 32
4-4-6. HIGH STATIC PRESSURE DUCT TYPE ·················································· 04 - 34
4-4-7. FLOOR / CEILING TYPE ··········································································· 04 - 38
4-4-8. CEILING TYPE ·························································································· 04 - 40
4-4-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ······························ 04 - 42
4-4-10. COMPACT WALL MOUNTED TYPE (EEV external model) ···························· 04 - 42
4-4-11. WALL MOUNTED TYPE ········································································· 04 - 44
4-5. WIRING DIAGRAMS ··································································· 04 - 46
4-5-1. COMPACT CASSETTE TYPE ··································································· 04 - 46
4-5-2. CASSETTE TYPE ····················································································· 04 - 47
4-5-3. COMPACT DUCT TYPE ············································································ 04 - 48
4-5-4. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 49
4-5-5. DUCT TYPE ······························································································ 04 - 51
4-5-6. HIGH STATIC PRESSURE DUCT TYPE ·················································· 04 - 52
4-5-7. FLOOR / CEILING TYPE ··········································································· 04 - 53
4-5-8. CEILING TYPE ·························································································· 04 - 54
4-5-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ······························ 04 - 55
4-5-10. COMPACT WALL MOUNTED TYPE (EEV external model) ···························· 04 - 56
4-5-11. WALL MOUNTED TYPE ·········································································· 04 - 57
4-6. AIR VELOCITY AND TEMPERATURE DISTRIBUTIONS ··········· 04 - 58
4-6-1. COMPACT CASSETTE TYPE ··································································· 04 - 58
4-6-2. CASSETTE TYPE ····················································································· 04 - 62
4-6-3. FLOOR / CEILING TYPE ·········································································· 04 - 66
4-6-4. CEILING TYPE ·························································································· 04 - 72
4-6-5. COMPACT WALL MOUNTED TYPE (EEV internal model) ······························ 04 - 76
4-6-6. COMPACT WALL MOUNTED TYPE (EEV external model) ··························· 04 - 79
4-6-7. WALL MOUNTED TYPE ··········································································· 04 - 82
4-7. FAN PERFORMANCE CURVE ···················································· 04 - 85
4-7-1. COMPACT DUCT TYPE ············································································· 04 - 85
4-7-2. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 90
4-7-3. DUCT TYPE ······························································································· 04 - 94
4-7-4. HIGH STATIC PRESSURE DUCT TYPE ··················································· 04 - 98
4-7-5. CEILING TYPE (Fresh air) ············································································ 04 - 103
4-7-6. CASSETTE TYPE (Fresh air) ······································································· 04 - 104
4-8. AIR FLOW ·················································································· 04 - 105
4-9. NOISE LEVEL CURVE ································································ 04 - 106
4-9-1. COMPACT CASSETTE TYPE ································································· 04 - 106

CONTENTS
4-9-2. CASSETTE TYPE ····················································································· 04 - 108
4-9-3. COMPACT DUCT TYPE ·········································································· 04 - 110
4-9-4. LOW STATIC PRESSURE DUCT TYPE ··················································· 04 - 112
4-9-5. DUCT TYPE ····························································································· 04 - 113
4-9-6. HIGH STATIC PRESSURE DUCT TYPE ·················································· 04 - 114
4-9-7. FLOOR / CEILING TYPE ········································································· 04 - 116
4-9-8. CEILING TYPE ························································································ 04 - 117
4-9-9. COMPACT WALL MOUNTED TYPE (EEV internal model) ··························· 04 - 118
4-9-10. COMPACT WALL MOUNTED TYPE (EEV external model) ························ 04 - 119
4-9-11. WALL MOUNTED TYPE ········································································ 04 - 120
4-10. SAFETY DEVICES ··································································· 04 - 122
CONTROL SYSTEM5.
5-1. CONTROL SYSTEM ····································································· 05 - 01
5-1-1. LINE UP OF CONTROLLERS ··································································· 05 - 01
5-1-2. CONTROL SYSTEM DESIGN ··································································· 05 - 03
5-1-3. SYSTEM CONFIGURATION EXAMPLES ················································ 05 - 04
5-1-4. FEATURES OF CONTROL SYSTEM ························································ 05 - 08
5-1-5. WIRING SYSTEM ······················································································ 05 - 09
5-1-6. CONTROL EQUIPMENT DESIGN LIMITATION ······································· 05 - 10
5-2. CONTROL UNITS ········································································ 05 - 11
5-2-1. SYSTEM CONTROLLER ··········································································· 05 - 12
5-2-2. TOUCH PANEL CONTROLLER ································································ 05 - 16
5-2-3. GROUP REMOTE CONTROLLER ···························································· 05 - 27
5-2-4. WIRED REMOTE CONTROLLER ····························································· 05 - 31
5-2-5. SIMPLE REMOTE CONTROLLER (With Operation mode) ······························· 05 - 35
5-2-6. SIMPLE REMOTE CONTROLLER (Without Operation mode) ·························· 05 - 39
5-2-7. WIRELESS REMOTE CONTROLLER ······················································· 05 - 43
5-2-8. IR RECEIVER UNIT (For ALL DUCT TYPE) ····················································· 05 - 47
5-2-9. IR RECEIVER UNIT (For CASSETTE TYPE) ···················································· 05 - 50
5-2-10. REMOTE SENSOR UNIT ········································································· 05 - 52
5-2-11. GROUP CONTROL METHOD ································································· 05 - 54
5-2-12. COMPARISON TABLE OF CONTROLLERS ·········································· 05 - 56
5-3. ADAPTOR / CONVERTOR UNITS ·············································· 05 - 57
5-3-1. NETWORK CONVERTOR ········································································· 05 - 58
5-3-2. NETWORK CONVERTOR FOR LONWORKS®············································· 05 - 63
5-3-3. SIGNAL AMPLIFIER ················································································· 05 - 69
5-3-4. EXTERNAL SWITCH CONTROLLER ······················································ 05 - 72
5-4. SERVICE & WEB MONITORING TOOL ····································· 05 - 76
5-4-1. SERVICE TOOL ························································································ 05 - 76
5-4-2. WEB MONITORING TOOL ······································································· 05 - 79

CONTENTS
SYSTEM DESIGN6.
6-1. SYSTEM DESIGN ········································································· 06 - 01
6-1-1. REFRIGERANT SYSTEM ·········································································· 06 - 01
6-1-2. VRF NETWORK SYSTEM ········································································· 06 - 06
6-1-3. MOUNTING POSITION ·············································································· 06 - 10
6-1-4. TRANSPORTATION THE OUTDOOR UNIT ············································· 06 - 12
6-2. PIPING DESIGN ··········································································· 06 - 13
6-2-1. IMPORTANT ITEMS WHEN USING NEW REFRIGERANT (R410A) ·········· 06 - 13
6-2-2. LIMITATION ······························································································· 06 - 15
6-2-3. PIPE SIZE ·································································································· 06 - 20
6-2-4. SELECTION OF PIPE HEAT INSULATING MATERIAL ·························· 06 - 25
6-2-5. ADDITIONAL CHARGE CALCULATION ·················································· 06 - 26
6-2-6. EXAMPLE OF PIPING DESIGN ································································ 06 - 27
6-3. PIPING CONNECTION ································································ 06 - 31
6-3-1. CAUTION OF PIPING ················································································ 06 - 31
6-3-2. PIPING TO OUTDOOR UNIT ···································································· 06 - 33
6-3-3. SEPARATION TUBE ················································································· 06 - 42
6-3-4. HEADER ···································································································· 06 - 44
6-3-5. EV KIT ······································································································· 06 - 47
6-4. WIRING DESIGN ········································································· 06 - 51
6-4-1. ELECTRICAL WIRING ·············································································· 06 - 51
6-4-2. POWER SUPPLY CABLE WIRING ·························································· 06 - 53
6-4-3. TRANSMISSION LINE ·············································································· 06 - 55
6-4-4. CONTROLLER CABLE WIRING ······························································ 06 - 64
6-5. SYSTEM SETTING ······································································ 06 - 65
6-5-1. SYSTEM TYPE SETTING ········································································· 06 - 65
6-5-2. ADDRESS SETTING ················································································· 06 - 67
6-5-3. MANUAL ADDRESS SETTING METHOD················································ 06 - 70
6-5-4. INFRARED ADDRESS SETTING ····························································· 06 - 78
6-5-5. WIRED REMOTE CONTROLLER ADDRESS SETTING ························· 06 - 85
6-5-6. SIMPLE REMOTE CONTROLLER ADDRESS SETTING ························ 06 - 90
6-5-7. AUTOMATIC ADDRESS SETTING ··························································· 06 - 95
6-5-8. TERMINAL RESISTOR SETTING ·························································· 06 - 101
6-6. FUNCTION SETTING ································································ 06 - 102
6-6-1. OUTDOOR UNIT ······················································································ 06 - 102
6-6-2. INDOOR UNIT (setting by switch) ························································· 06 - 108
6-6-3. INDOOR UNIT (setting by wireless remote controller) ······················· 06 - 113
6-6-4. INDOOR UNIT (setting by wired remote controller) ··························· 06 - 120
6-6-5. INDOOR UNIT (setting by simple remote controller) ·························· 06 - 125
6-6-6. WIRED, SIMPLE REMOTE CONTROLLER ··········································· 06 - 130

CONTENTS
6-6-7. GROUP REMOTE CONTROLLER ·························································· 06 - 132
6-6-8. TOUCH PANEL CONTROLLER ····························································· 06 - 134
6-6-9. NETWORK CONVERTOR ······································································ 06 - 135
6-6-10. SIGNAL AMPLIFIER ············································································· 06 - 136
6-6-11. NETWORK CONVERTOR FOR LONWORKS®········································· 06 - 137
6-6-12. DUCT STATIC PRESSURE SETTING ·················································· 06 - 138
6-6-13. ADMINISTRATIVE INDOOR UNIT SETTING ······································· 06 - 141
6-7. EXTERNAL INPUT & OUTPUT ··················································· 06 - 142
6-7-1. OUTDOOR UNIT ······················································································· 06 - 142
6-7-2. INDOOR UNIT (Compact Cassette type and Cassette type) ·································· 06 - 144
6-7-3. INDOOR UNIT (All Duct type and All Ceiling type) ············································· 06 - 148
6-7-4. INDOOR UNIT (Compact Wall Mounted type) ··················································· 06 - 152
6-7-5. INDOOR UNIT (Wall Mounted type) ································································ 06 - 155
6-7-6. TOUCH PANEL CONTROLLER ······························································· 06 - 159
6-8. DRAIN CONNECTION ······························································· 06 - 162
6-8-1. OUTDOOR UNIT ······················································································· 06 - 162
6-8-2. INDOOR UNIT ·························································································· 06 - 163
6-9. STANDARD ACCESSORIES ····················································· 06 - 173
6-9-1. OUTDOOR UNIT ······················································································ 06 - 173
6-9-2. INDOOR UNIT ························································································· 06 - 174
6-10. OPTIONAL PARTS INSTALLATION ········································· 06 - 183
6-10-1. DRAIN PUMP UNIT ················································································· 06 - 183
6-10-2. FRESH AIR INTAKE KIT (MODEL:UTZ-VXAA) ····································· 06 - 190
6-10-3. FRESH AIR INTAKE KIT (MODEL:UTZ-VXGA) ····································· 06 - 201
6-11. REFRIGERANT LEAKAGE CAUTION ····································· 06 - 213
6-11-1. INTRODUCTION ····················································································· 06 - 213
6-11-2. CHECKING CONCENTRATION LIMIT ··················································· 06 - 214
6-12. COMPATIBILITY OF VRF SYSTEM ········································ 06 - 216
6-13. INSTALLATION PRECAUTIONS ·············································· 06 - 218
6-13-1. INDOOR UNIT INSTALLATION PRECAUTIONS ··································· 06 - 218
6-13-2. OUTDOOR UNIT INSTALLATION PRECAUTIONS ······························· 06 - 221

CONTENTS
OPTIONAL PARTS7.
7-1. SEPARATION TUBE ···································································· 07 - 01
7-2. OUTDOOR UNIT BRANCH KIT ··················································· 07 - 05
7-3. HEADER ······················································································· 07 - 06
7-4. EV KIT ··························································································· 07 - 11
7-5. CONTROLLER ············································································· 07 - 12
7-6. ADAPTOR / CONVERTOR ·························································· 07 - 13
7-7. OTHERS ························································································ 07 - 14

1. GENERAL INFORMATION

FEATURES OF SYSTEM1-1.
1-1-1. HIGH EFFICIENCY OPERATION
SIGNIFICANTLY IMPROVED EER/COP

Signicantly greater efciency is realized by the use of a DC twin rotary compressor, inverter
technology, and large heat exchanger.
ENERGY SAVING TECHNOLOGY

The data refers to a 8HP outdoor unit.
¾
"EER" and "COP" is the coefcient of performance [= capacity (kW) input power (kW)].
¾
EER and COP values are base on our own testing method.
¾
Current
model
Cooling Heating
V-II
Series
EEREER3.0 3.50.0 4.0
Cooling EER
27%increase!
3.2
3.894.07
3.0 3.50.0 4.0 COPCOP
Heating COP
18%increase!
3.7
4.37
Surface area
1.7times!
Power consumption
has been reduced
by 25% compared to
previous models by
using a compact and
high performance DC
fan motor.
High efciency
operation is
realized by
using a sine
wave DC
inverter control.
Signicantly
greater efciency
is realized by
use of a large
capacity DC twin
rotary compressor
with substantially
increased
refrigerant intake
and compression
efciency.
Heat exchange efciency is signicantly
improved by the introduction of a new
4-face heat exchanger that increases
effective surface area.
In multiple outdoor unit installations, the
unique front intake design improves airow
into the Heat exchanger.
Previous
model
- (01 - 01) -
GENERAL INFORMATION GENERAL INFORMATION

ENERGY EFFICIENCY COMBINATION

ECONOMY OPERATION

Economy operation can be set by remote
controller.
The temperature setting is offset automatically
over a certain period of time.
ROOM TEMPERATURE SET

POINT LIMITATION
The minimum and maximum temperature range
can be set giving further energy saving while
considering the comfort of the occupants.
PEAK CUT OPERATION

Operation capacity can be set in 4 steps for rated
capability.
The power consumption at peak is cut down and
the maximum load is suppressed.
AUTO-OFF TIMER

Each remote controller is equipped with an OFF
timer function that automatically stops operation
when a xed time has elapsed from the start of
operation. This prevents wasteful operation. (NB
Except simple remote controller)
[For 16HP]
18%
energy saving !
12%
energy saving !
10%
energy saving !
[For 24HP]
12HP 12HP
[For 28HP]
12HP16HP
16HP 8HP 8HP
8HP 8HP 8HP
12HP 8HP 8HP
[Space saving combination] [Energy efciency combination]
Cooling Set Temperature
Economy operation
Control Temperature
Heating Set Temperature
Economy operation
Control Temperature
Set Temp.
MAX. -4°C
MAX. +2°C
Economy operation
Up
Up
Economy operation
Set Temp.
Down Down Down Down
Heating set
temp. range
Cooling set
temp. range
Heating Cooling
Original Set
temp. limitation
Set point
limitation setting
°C
30
28
26
24
22
20
18
16
14
12
10
Operation setting (System Controller)
W
Capacity
Time
Setting level
Peak cut
Control
device
Signal input
(Comparison of average COP)
- (01 - 02) -
GENERAL INFORMATION GENERAL INFORMATION

1-1-2. HIGH DESIGN FREEDOM
OVERALL PIPING LENGTH

1,000m
World’s top class overall piping length of 1,000m
allows for application in a wide variety buildings.
HIGH STATIC PRESSURE OF

80Pa
The outdoor unit can have a condenser hood
easily connected with a static pressure of 80Pa
standard. This allows outdoor units to be installed
within plant rooms in high rise buildings.
1,000mmax.
Total pipe length
Actual pipe length
150m max.
For the outdoor unit stated
below : 40m max.
Height difference between
outdoor and indoor units
50m max.
Pipe length from rst
separation tube to the
farthest indoor unit
60m max.
Height difference
between indoor and
indoor units
15m max.
Installation scene
Large diameter fan and DC motor has been utilized allowing
an external static pressure of 80Pa. This is approximately 2.6
times greater than the previous model.
Powerful discharge with an
external static pressure of 80Pa.
80Pa
as standard
Previous model V-II Series
- (01 - 03) -
GENERAL INFORMATION GENERAL INFORMATION

SPACE SAVING AND COMPACT SIZE

Compact size has been achieved by signicantly reducing the width of the outdoor units
compared to previous models.
WIDE OPERATING RANGE

Installation in extreme temperature
conditions is possible due to an increase in
operational range.
Cooling : -15°C~46°C
Heating : -20°C~21°C
*1 Note : When a multiple outdoor unit connection is
used, operating range is from -5°C to 46°C
in cooling.
VARIOUS COMBINATIONS

Various combination from 8HP to 48HP with 2HP
increments. 11 types, 49 models of indoor units can be
selected ranging from 2.2kW to 25kW in capacity. A
maximum of 150% indoor unit connectable capacity.
Note : when indoor unit connected capacity is greater than 100%,
individual indoor units will operate at a slightly lower capacity
when maximum capacity is required.
1,240
1,300
2,600
930
28%
reduction
52%
reduction
38.0m2
16.2m2
57%
space saving
Previous model 10HP
16HP(8HPx2) ×10=160HP
16HP×10=160HP
Previous model
For 160HP
Previous model 16HP (8HP x 2)
V-II Series 10HP
V-II Series
V-II Series 16HP
CoolingCooling
46°C
21°C
-15°C
-15°C
-20°C
-20°C
Heating
(°C)
-15°Carea
Operation
possible
in cooling.
-20°Carea
Operation
possible
in heating.
50
40
30
20
10
0
-10
-20
*1
Connectable indoor unit number
up to 48
Wide variation of indoor units
11types, 49models
Connectable indoor unit capacity
Ratio up to 150%
- (01 - 04) -
GENERAL INFORMATION GENERAL INFORMATION

1-1-3. HIGH RELIABILITY
OUTDOOR UNIT OPERATION ROTATION

The compressor starting order is rotated so that the running time is shared.
BACKUP OPERATION

If one of two compressors malfunctions, it will not affect the operation of the remaining outdoor
units.
Failure
If one of compressor fails, backup operation will be performed by the remaining
compressors as emergency.*1
*1 Note: Backup operation may not be possible depending on the combination
and trouble state.
Each indoor unit is controlled individually on the system network. This allows all
indoor units to continue to operate unaffected even if an error should occur at
any indoor unit’s on the VRF system.
Indoor unit continuous operation
Outdoor units
Indoor units
DC
1
AC
4
DC
2
AC
5
DC
3
DC
1
AC
4
DC
2
AC
5
DC
3
DC
1
AC
4
DC
2
AC
5
DC
3
Rotation
Note : The inverter compressors start in priority.
Operating rotation is alternated by the start / stop timing of the compressors
Rotation
Rotation
- (01 - 05) -
GENERAL INFORMATION GENERAL INFORMATION

ADOPTION OF BLUE FIN HEAT EXCHANGER

Corrosion resistant of the heat exchanger has been improved by the introduction of blue n
treatment to the outdoor unit’s heat exchanger.
REMOTE MONITORING

The Web Monitoring system allows you view system operation at all times over the internet
ensuring trouble free operation.
Blue n heat exchanger
Standard chromate protection
Cobalt Blue protection
Aluminium base material
Hydrophilic coating
VRF System SideMonitoring Side
Internet
or
Public Telephone Line
Outdoor unit
Indoor unit
Transmission line
Web Monitoring Tool
USB adaptor
(Field supplied)
The operating VRF system in the building can
be monitored in real time over the Internet.
- (01 - 06) -
GENERAL INFORMATION GENERAL INFORMATION

1-1-4. EASY INSTALLATION
EASILY TRANSPORTED

SIMPLE SIGNAL LINE CONNECTION

Installation is made easier as the communications wiring can be connected continuously to
any component.
Easy piping connection

The need for a oil equalization pipe as required on the previous model has been removed. The
installation costs have been reduced by employing a Simple 2 pipe connection.
20%
weight reduction
(Than Previous model)
Note : In the case of 14HP
Design of outdoor
unit allows for lifting
straps to be used
Light weight Can be transported
in a small elevator
Transporting by forklift
Easily craned
into position
using lifting
belt hooks
Transport with forklift is possible.
Up to maximum
length 3,600m
Other wiring method Simple wiring method
Note: In a multiple refrigerant system installation, Automatic addressing sequence cannot be initiated
Eliminating oil
equalization pipe
- (01 - 07) -
GENERAL INFORMATION GENERAL INFORMATION

AUTOMATIC ADDRESS SETTING

The address of each indoor unit can be automatically set by button swich of outdoor unit.
EASY ACCESS

By adopting a L-Shape front panel that can be removed, the work space for installation
and service has been signicantly expanded by this corner cutting structure. For multiple
installations, work is performed easily and efciently even in a narrow space.
FOUR WAY PIPING CONNECTION

Piping and wiring are available to the front, left and right, and bottom.
3 8 1 0
2 4 5 6
Automatic address
setting is performed
at outdoor unit
Addresses are automatically
distributed from outdoor unit.
Press the pushbutton switch
of outdoor unit.
Manual address setting from indoor unit and remote controller is also possible.
Expansion
of work
space
Four way connection
- (01 - 08) -
GENERAL INFORMATION GENERAL INFORMATION

1-1-5. MORE COMFORT & CONVENIENCE
LOW NOISE MODE

Two low noise modes can be selected automatically by quiet priority setting and capacity
priority setting depending on the usage environment and outside temperature load.
SELECTABLE AUTO CHANGEOVER FUNCTION

Auto changeover setting allows for the product to easily switch between Cooling and heating
modes regardless of the operation mode of other indoor units. This can be done via specic
indoor unit remote controller and/or by an external input control. This ensures comfortable
operation all year round.
LOW NOISE DESIGN

Compressor noise has been signicantly
reduced by shielding the compressor
compartment.
INDOOR UNIT

Low noise indoor unit lineup
100%
58dB
0
0
Heat load
100%
58dB
0
0
Heat loadHeat load
Air
conditioning
load factor
Quiet priority low noise mode
Quiet priority setting
Capacity priority low noise mode
Capacity priority setting
Reset automatically
Alternated
automatically
Operating
sound
Capacity Down
(time) (time)
Compressor compartment
Compact Duct Compact Cassette
Low Static Pressure Duct Compact Wall Mounted
2 3
1
Various remote controllers
connected to indoor unit
Command for operational
mode switching is controlled
by one of the following options.
1 selected from the following:
External input terminal of
outdoor unit
System controller
Switching to cooling and
heating mode by specic
remote controller in the
main room, etc.
1
2
3
- (01 - 09) -
GENERAL INFORMATION GENERAL INFORMATION

PRECISION REFRIGERANT FLOW

CONTROL
Precision and Smooth refrigerant ow control
is achieved by using a DC Inverter control in
conjunction with individual indoor unit electronic
expansion valve control. This allows for a high
precision comfortable temperature control of
±0.5°C.
INDIVIDUAL AIR

CONDITIONING
CONTROL
The desired temperature conditions
of each room are met due to the
Individual thermostat control of
each indoor unit.
SIMPLE CENTRAL MANAGEMENT FUNCTION

NON-STOP OIL RECOVERY OPERATION

A comfortable room condition is maintained during oil recovery mode because the product
continues to operate without stopping the cooling or heating operation.
Set temp.
Cold
Hot Hot
±0.5
Room A
24°C
Room C
27°C
Room D
OFF
Room E
23°C
Room B
18°C
Thermal change of the room
*Simulation in heating operation.
Comfortable operation is
achieved due to a small variation
of room temperature
Reach the set temperature quickly
Previous model (Heating operation)
Operation stopped at oil recovery
On On
Time Time
Off
Non-stop oil recovery operation
High
Low
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Simple central
control operation
Simple operation by icon display and
color touch screen
Daily starting & stopping and
temperature setting are managed.
The clock of each individual controller
is periodically corrected.
Yearly schedule
function
7.5 inch large LCD
Touch Panel Controller
Clock setting function
Schedule screen
- (01 - 10) -
GENERAL INFORMATION GENERAL INFORMATION