1) The document introduces an enhanced lineup of 3 types of VRV heat pump systems - High-COP, Standard, and Space Saving - with improved energy efficiency and installation flexibility. 2) Key features of the new VRV systems are highlighted, including higher COP, variable refrigerant temperature control for optimized energy efficiency, longer piping lengths, and increased connection capacity. 3) Variable refrigerant temperature technology is explained, allowing automatic adjustment of refrigerant temperature to match changing cooling loads, reducing energy consumption compared to fixed temperature systems.

4. Lineup
HP
High-COP Type
Standard Type
Space Saving Type
03
Excellent Operation PerformanceExcellent Operation Performance
Enhanced Lineup to 3 types
High-COPtype
20
HP
ENERGY
SAVING
Installation Space
Product Weight
1.66m2
490kg
2.13m2
555kg
COP 3.94 COP 4.39 11%Increase
Enables further energy saving
12HP - 50HP with 4 new models lineup
Standardtype
20
HP
Installation Space
Product Weight
1.66m2
490kg
1.42m2
380kg
COP 3.94 COP 3.99
Offers higher capacity of up to 60 HP
6 HP-60 HP with 3 new models lineup
SpaceSavingtype
20
HP
Installation Space
Product Weight
1.66m2
490kg
0.95m2
320kg
COP 3.94 COP 3.11
New series with compact & lightweight design
18 HP-50 HP with 17 new models lineup
22%Decrease
35%Decrease
43%Decrease
UP TO
60 HP
COMPACT
DESIGN
VRV
VRV
VRV
14%Decrease

5. 04
MainFeatures
Energy saving
Variable Refrigerant TemperatureFixed Refrigerant
Temperature
Energy saving priorityCapacity priority
Higher Coefficient of Performance (COP)
*Cooling operation conditions: Indoor temp. of
27ºCDB, 19ºCWB, and outdoor temp. of 35ºCDB.0
3
3.5
4
4.5
18HP8 HP10 HP12 HP14 HP16 HP*
4.07
3.80 3.74
3.46
3.25
4.32
COP at 100% operation load
Higher Coefficient of Performance (COP)
*Cooling operation conditions: Indoor temp. of
27ºCDB, 19ºCWB, and outdoor temp. of 35ºCDB.0
3
4
5
6
7
100% 90% 80% 70% 60% 50%
Load*
4.46
4.83
5.27
5.79
6.45
4.07
COP for 10 HP
Higher Coefficient of Performance (COP)
*Cooling operation conditions: Indoor temp. of
27ºCDB, 19ºCWB, and outdoor temp. of 35ºCDB.
4
5
6
7
0
8 HP10 HP12 HP14 HP16 HPHP 18*
6.45
6.02 5.92
5.47 5.13
6.83
COP at 50% operation load
CoolingOperationCOPCoolingOperationCOPCoolingOperationCOP

6. As a leading global innovator, Daikin advanced from
the conventional 2 module combination to a single
module for 20 HP model. This allows the installation
area to reduce by 43% as compared to the previous
VRV III 20 HP model.
With this unbridled passion for high quality and
advanced technology solutions, the new 20 HP is
designed with the following considerations:
05
The unique 4-sided all round heat exchanger ensure
sufficient surface area for the heat exchanger as
oppose to conventional 3-sided heat exchanger. This
improves the heat exchanger performance without
increasing the footprint.
Increase surface area of heat exchanger
Refined Design Meets AdvancedRefined Design Meets Advanced
Realising compact technology with performance
In previous VRV III design, the electrical component
is usually situated on the front surface which requires
the whole electrical component to be removed before
maintenance can be carried out.
With the new design, the electrical component is
strategically located on the top which ease the
maintenance process.
Moreover, the heat exchanger on the front side can
be extended to take up the previous space used for
the electrical component and improve its
performance.
Easy maintenance
Electrical componentElectrical component
Design considerations
1. Increase surface area of heat exchanger for
better performance
2. Easy maintenance
3. Sufficient cooling for electrical component
4. Eliminate suction resistance issue to enhance
air flow volume.
20HP
Installation space
20HP
43%Decrease
VRV
VRV
VRV

7. MainFeatures
06
The new 20 HP model is designed with the electrical box strategically located between a region of positive and
negative pressure. This design allows a larger air flow from negative pressure to positive pressure due to the
higher pressure difference.
The small holes created in the electric box are now close to the fan blower inlet, thus a significant pressure
difference can still be achieved unlike that of VRV III.
Sufficient cooling for electrical component
Without affecting the fan volume, the electric component is re-designed to the top and free up the dead space
that existed in previous VRV III models. This eliminates the problem of suction resistance.
Eliminate suction resistance issue
Uneven
negative
pressure
space
Even
negative
pressure
space
VRV
TechnologiesTechnologies
Electric box air
passage outlet
Low pressure
difference
High pressure
difference
Electric box air
passage entrance
Electric box air
passage outlet
Electric box air
passage entrance
● Pressure is lower
as the area where
air enters is far away
from the fan blower
inlet
● Higher pressure
as air entering is
near to the fan
blower inlet
Positive pressure
space
Negative pressure
space
Positive pressure
space
Negative
pressure
space
VRV

8. State-of-the-art energy saving technology for VRV system
07
How is energy reduced?
During cooling, the refrigerant evaporating temperature (Te)
is raised to minimise the difference with the condensing
temperature.Compressors work less, and this reduces
power comsumption.
Coolingload
&capacity
25%
100%
Outdoor
Temp.
35℃30℃25℃20℃
Capacity
changes
to match
heat load
Typical changes in evaporating temperature and COP depending on changing indoor load
Outdoor
Temp.
VRT
Without VRT
LowHighLowHigh
35℃30℃25℃20℃
Refrigerantevaporating
temp./Te(℃)
Automatic control to
adjust temperature
Outdoor
Temp.
COP
35℃30℃25℃20℃
Without VRT
VRT
LowHigh
Customise your VRV for optimal annual efficiency
The new VRV IV system now features VRT technology.
VRT automatically adjusts refrigerant temperature to
individual building and climate requirement, thus further
improving annual energy efficiency and maintaining comfort.
With this excellent technology, running costs are reduced.
Evaporating temperature raised
Compressor workload reduced
VRT-Variable Refrigerant TemperatureVRT-Variable Refrigerant Temperature
Automatic control adjusts
evaporating temperature
to heat load change.
Energy efficiency is
improved without
sacrificing comfort.
Required capacity
changes as air
conditioning load changes
according to outdoor
temperature.
In case of fixed
evaporating temperature,
excessive cooling, thermo
on-off loss, and other
inefficiencies occur.
(During cooling)
Refrigerant cycle
Evaporator
Condenser
Compressor
Indoor unit
heat exchanger

9. 08
40
35
30
25
20
15
0
Mar. Jun. Sep. Dec.
Av. max. temp. Av. daily temp. difference
Av. min. temp.
(Typical example)
OutdoorTemp.(ºC)
VRT is particularly effective at night when
temperatures are low.
Set temperature
Very Fast Time
30
Start of
cooling
25
Fast
Medium
IndoorTemp.(ºC)
VRT offers quicker cool down
to shorten uncomfortable pull down time.
Mild
Quick
Powerful
New system more energy saving
MainFeatures
Recommended for use in these situations
Basic mode is selected to maintain optimal comfort.
VRT is selected to save energy and prevent excessive cooling.
Cooling only regions having differences
in daily temperature.
Powerful
Mode
Quick
Mode
Mild
Mode
• Can boost capacity above 100% if needed.
The refrigerant temperature can go lower in cooling than the set minimum.
• Gives priority to very fast reaction speed.
The refrigerant temperature goes down fast to keep the room setpoint stable.
• Gives priority to fast reaction speed.
The refrigerant temperature goes down fast to keep the room setpoint stable.
• Gives priority to efficiency.
The refrigerant temperature goes down gradually giving priority to the
efficiency of the system instead of the reaction speed.
Energy saving priorityCapacity priority
Basic Mode
Fixed Te - Standard control
Fixed Refrigerant
Temperature
Auto Mode
Floating target Te depending on heat load
(default setting on VRV IV)
Variable Refrigerant Temperature
High Sensible
Mode
Fixed target Te
Selecting VRT enables operation to be optimised for
either energy efficiency or rapid cooling.
Floating Te
Powerful Mode Quick Mode Mild Mode
Fixed Te
Eco Mode
Reaction speed VERY FAST Reaction speed FAST Reaction speed
(Default setting VRV IV)
MEDIUM Unable to change Te

10. 09
The long piping length provides more design flexibility, which can match even large-sized buildings.
Long piping length
Connection capacity at maximum is 200%.
Connection ratio
*1 For the FXFQ25LU,FXFQ-S and FXVQ models, maximum connection ratio is 130% for the
entire range of outdoor units.
If the operational capacity of indoor units is more than 130%, low airflow operation is
enforced in all the indoor units.
*Refer to page 33-34 for outdoor unit combination details.
50%–200%
Connection ratio
Connection ratio =
Total capacity index of the indoor units
Capacity index of the outdoor units
Conditions of VRV indoor unit connection capacity
Single outdoor units
Double outdoor units
Triple outdoor units
FXDQ, FXSQ, FXMQ-P, FXAQ models
Applicable
VRV indoor units
200%
Other VRV indoor
unit models*1
200%
160%
130%
1. No special requirements up to 40 m. The maximum actual piping length can be 90 m, depending on conditions. Various conditions and requirements have to be met
to allow utilisation of 90 m piping length. Be sure to refer to the Engineering Data Book for details of these conditions and requirements.
2. When level differences are 50 m or more, the diameter of the main liquid piping size must be increased. If the outdoor unit is above the indoor unit, a dedicated setting
on the outdoor unit is required. Refer to the Engineering Data Book and contact your local dealer for more information.
Maximum
allowable
level difference Between the outdoor units
and the indoor units
Between the indoor units
Between the outdoor units (Multiple use)
30 m
5 m
90 m
q
s
r
r
Level
Difference
Example
If the outdoor unit is above.
If the outdoor unit is below.
90 m 2
2
15 m higher
than VRV
More Flexible System DesignMore Flexible System Design
More options for installation location
165m
Max. actual
piping length
Max. equivalent
piping length
Max. total
piping length
Max. level difference
between the outdoor units
and the indoor units
Max. level difference
between the indoor units
190m
1000m
90m
30m
For connection of only VRV indoor units
Maximum
allowable
piping length Between the first indoor branch and the farthest indoor unit
Between the outdoor branch and the last outdoor unit
Total piping length
Refrigerant piping length
—
—a+b+c+d+e+f+g+h+i
a+f+g+h+i
f+g+h+i
k+p
165 m 190 m
1000 m
90 m 1
10 m 13 m
Actual
piping length
Equivalent
piping lengthExample
Max.
30 m
Max.
90 m
p
q
k
First outdoor branch
fa
b
First
indoor branch
Multiple use
*The rest of indoor units are
the same as for single use.
a
i
s
r
hgf
edcb
First indoor branch
Single use
Colours in the diagram above are merely for identifying pipes referenced with symbols such as a .
2

11. 10
MainFeatures
When a mixed combination of VRV and residential indoor units is connected
or when only residential indoor units are connected
VRV IV outdoor unit has been achieved high
external static pressure up to 78.4 Pa,
ensuring the efficient heat dissipation and
stable operation of equipment in either
hierarchical or intensive arrangement.
*1. When the piping length exceeds 20 m, the size of the main pipes (the gas side and the liquid side) must be increased. Please refer to Engineering
Data Book for details.
*When a mixed combination of VRV and residential indoor units is connected or when only residential indoor units are connected, connection ratio
must be 50% to 130%. Refer to page 34 for outdoor unit combination details.
VRV : VRV indoor unit
RA : Residential indoor unit
BP : BP unit
Maximum allowable
level difference Between the outdoor unit
and the indoor unit
Between the indoor units
Between BP units
15 m
15 m
l
m
n
n
o
Level Difference Example
50 mIf the outdoor unit is above.
If the outdoor unit is below. 40 m
40 mBetween the outdoor unit and the BP unit
High external static pressure
Maximum allowable
piping length
Minimum allowable piping length
Between BP unit
and indoor unit
Between the first indoor branch and the farthest BP unit or
between the first indoor branch and the farthest VRV indoor unit
Total piping length
Refrigerant piping length
Between outdoor unit and the first indoor branch
a+b+c+d+e+f+g+h+i+j+k
b+c+g, b+c+d
a+b+c+g+k, a+b+c+d
h, i, j, k
a
100 m
250 m
2 m–15 m
2 m–12 m
2 m–8 m
50 m*1
5 m
Actual piping length Example
If indoor unit capacity index < 60.
If indoor unit capacity index is 60.
If indoor unit capacity index is 71.
For mixed combination of VRV and residential indoor units
More options in the
opening/angle of louvre
Outstanding heat dissipation
effect in both hierarchical and
intensive arrangement
78.4 Pa
Max.
50 m
Max.
40 m
Max.
15 m
Max.
15 m
a
o
l
n
dcb
gfe
First indoor branch
mh i
j
k
BP
RA RA
RA
RA
VRV
VRV
BP
Colours in the diagram below are merely for identifying
pipes referenced with symbols such as a .

12. Multiple advanced features ensuring more accurate test operation
and stable system
Daikin VRV IV system incorporates a simplified and efficient test operation function, not only greatly
accelerating the installation process, but effectively improving the field setting quality as well.
Efficient automatic test operation
Automatically checks the wirings
between outdoor units and indoor
units to confirm whether there is a
defective wiring.
Automatically check whether the
stop valve in each outdoor unit is in
normal status to ensure the smooth
operation of air conditioning system.
Confirms and corrects the actual
piping length.
11
Ease of installation
Compact & lightweight design
Highly-integrated VRV IV system offers compact
outdoor units to achieve maximum utilisation of the
installation space.
VRV 12 HP 12 HP
1,240 mm
765
mm
765
mm930 mm
Product Weight 285 kg
Installation Space 0.95 m2
0.71 m2
195 kg 32% Decrease
25%Decrease
32%Decrease
Automatic check WIRING
CHECK
PIPING
CHECK
STOP
VALVE
CHECK
Reliable and Stable SystemReliable and Stable System

13. 12
VRV IV system utilises 7-segment
luminous digital tubes to display system
operation information, enabling the
operational state to be visually
displayed whilst facilitating simplified
commissioning and after-sales service.
Function of information display
by luminous digital tube
The VRV configurator is an advanced
software solution that allows for easy
system configuration and commissioning.
Less time is required on the roof
configuring the outdoor unit.
Multiple systems at different sites can
be managed in exactly the same way,
thus offering simplified commissioning
for key accounts.
Initial settings on the outdoor unit can be
easily retrieved.
VRV configurator
Simplified commissioning and after-sales service
Conventional LED display 7-segment digital display
Displays
system
operation
information
directly
Figures out
system
operation
information by
reading light
emitting state of
different diodes,
which is both
inefficient and
fallible.
Retrieve initial system settings
Simplified commissioning
Automatic sequencing operation
During start-up, Daikin VRV IV unit sequencing operation will be automatically enabled to ensure balanced
operation of each outdoor unit to improve longevity of equipment and stable operation.
Stage 1 Stage 2 Stage 3
Priority: Priority: Priority:
Automatic
sequencing
Automatic
sequencing
Outdoor unit sequencing technology
MainFeatures

18. 17
Outdoor Units
The outdoor unit capacity is up to 60 HP in increment of 2 HP.
VRV IV outdoor unit offers a higher capacity of up to 60 HP, responding to the needs of large-sized building.
The single outdoor unit has only 2 different shapes and dimensions, not only simplifying the design process, but also bringing
the system flexibility to a new level.
With the outdoor unit capacity increased in increment of 2 HP, customers' needs can be precisely met.
12, 14, 16 HP
RXQ12TAH
RXQ14TAH
RXQ16TAH
RXQ6TA
RXQ8TA
RXQ10TA
RXQ12TA
RXQ18TA
RXQ20TA
RXQ22TAS
RXQ24TAS
RXQ14TA
RXQ16TA
RXQ18TAN
RXQ20TAN
18, 20, 22, 24, 26, 28, 30, 32 HP
Triple Outdoor UnitsDouble Outdoor Units
6, 8, 10, 12 HP 14, 16 HP 22, 24, 26 HP 28, 30, 32 HP
18, 20 HP 22, 24 HP 26, 28, 30, 32 HP
Single Outdoor Units Double Outdoor Units
Single Outdoor Units Double Outdoor Units
RXQ34TAH
RXQ38TAH
RXQ28TAN
RXQ30TAN
RXQ32TAN
RXQ22TAN
RXQ24TAN
RXQ26TAN
34, 38 HP
18, 20 HP
RXQ18TAH
RXQ20TAH
RXQ22TAH
RXQ30TAH
RXQ32TAH
RXQ24TAH
RXQ26TAH
RXQ28TAH
RXQ26TAS
RXQ28TAS
RXQ30TAS
RXQ32TAS
Outdoor Unit LineupOutdoor Unit Lineup
High-COP Type
Standard Type
Space Saving Type
Model name ending with ~YM for ASEAN, ~Y14 for Indonesia, ~Y1S for Thailand

19. 18
RXQ36TAH
RXQ40TAH
RXQ42TAS
RXQ44TAS
RXQ46TAS
RXQ48TAS
RXQ50TAS
36, 40 HP
42, 44 HP 46, 48, 50, 52, 54, 56, 58, 60 HP
Triple Outdoor Units
Triple Outdoor Units
34, 36 HP 38, 40 HP
34, 36, 38, 40 HP
Double Outdoor Units
RXQ34TAN
RXQ36TAN
RXQ38TAN
RXQ40TAN
RXQ42TAN
RXQ44TAN
RXQ46TAN
RXQ48TAN
RXQ50TAN
RXQ52TAN
42, 44, 46, 48, 50 HP
46, 48, 50 HP42, 44 HP
RXQ54TAN
RXQ56TAN
RXQ58TAN
RXQ60TAN
RXQ42TAH
RXQ44TAH
RXQ46TAH
RXQ48TAH
RXQ50TAH
RXQ34TAS
RXQ36TAS
RXQ38TAS
RXQ40TAS
Cooling Only
Lineup
HP
High-COP Type
Standard Type
Space Saving Type
OutdoorUnitLineup

20. 19
Indoor units can be selected from 2 lineups, both VRV and residential indoor units,
to match rooms and preferences.
VRV indoor units
Daikin air handing units can be connected to VRV IV system.
Type Model Name
22 types 108 models
Capacity Range
Capacity Index
Ceiling Mounted Cassette
(Round Flow with Sensing)
Ceiling Mounted Cassette
(Round Flow)
Ceiling Mounted Cassette
(Compact Multi Flow)
FXFQ-SVM
FXFQ-LUV1
4-Way Flow Ceiling Suspended FXUQ-AVEB
FXZQ-MVE
Ceiling Suspended
Wall Mounted
Floor Standing
Concealed Floor Standing
Floor Standing Duct
Air Handling Unit
Outdoor-Air Processing Unit FXMQ-MFV1
Ceiling Mounted Cassette
(Double Flow)
Ceiling Mounted Cassette
Corner
Slim Ceiling Mounted Duct
(Compact Series)
Middle Static Pressure
Ceiling Mounted Duct
Slim Ceiling Mounted Duct
FXCQ-MVE
FXKQ-MAVE
FXDQ-SPV1
FXSQ-PVE
FXDQ-PBVET
(without drain pump)
FXDQ-NBVET
(without drain pump)
FXDQ-PBVE
(with drain pump)
FXDQ-NBVE
(with drain pump)
Ceiling Mounted Duct
FXMQ-PVE
FXMQ-MAVE
FXHQ-MAVE
FXAQ-PVE
FXLQ-MAVE
FXNQ-MAVE
FXVQ-NY1
AHUR
FXVQ-NY16
(high static pressure type)
Indoor Unit LineupIndoor Unit Lineup
Enhanced range of choices
6 - 120HP

21. 20
Type Model Name
Note: BP units are necessary for residential indoor units. Only single outdoor unit (RXQ6-20TA) can be connected.
Residential indoor units with connection to BP units
25 35
25 35
2.5 kW 3.5 kW
50 60 71
50 60 71
5.0 kW 6.0 kW 7.1 kWRated Capacity
Capacity Index
(700 mm width type)
(900/1,100 mm width type)
FDKS-EAVMB
FDKS-C(A)VMB
FTKS-DVM
FTKS-BVMA
FTKJ-NVMW
FTKJ-NVMS
FTKS-FVM
Slim Ceiling
Mounted Duct
Wall Mounted
6 types 18 models
VRV indoor units
BP unit BP unit
32
Max.
indoor
units
Residential indoor units
64
Max.
indoor
units
IndoorUnitLineup

22. Indoor Unit LineupIndoor Unit Lineup
21
Daikin offers a wide range of indoor units includes both VRV and residential
models responding to variety of needs of our customers that require
air-conditioning solutions.
VRV Indoor Units
Presence of people and floor
temperature can be detected to
provide comfort and energy savings
Ceiling Mounted Cassette
(Round Flow) Type
Ceiling Mounted Cassette
(Double Flow) Type
Thin, lightweight, and easy to install in
narrow ceiling spaces
Slim Ceiling Mounted Duct Type
(Standard Series)
Slim design, quietness and
static pressure switching
Ceiling Mounted Cassette
(Compact Multi Flow) Type
Quiet, compact, and designed for
user comfort
Ceiling Mounted Cassette
Corner Type
Slim design for flexible installation
360 airflow improves temperature
distribution and offers a comfortable
living environment.
Ceiling Mounted Cassette
(Round Flow with Sensing) Type
Slim Ceiling Mounted Duct Type
(Compact Series)
Slim and compact design for easy and
flexible installation
Middle Static Pressure Ceiling
Mounted Duct Type
Middle external static pressure
and slim design allow flexible installations
Middle external static pressure
and slim design allow flexible installations
VRV Indoor Units
FXFQ-SVM
FXCQ-MVEFXZQ-MVE
FXKQ-MAVE FXDQ-PBVE(T)
FXDQ-NBVE(T)
FXDQ-SPV1 FXSQ-PVE
FXFQ-LUV1

23. 22
Outdoor-Air
Processing Unit
Combine fresh air treatment
and air conditioning,
supplied from a single system.
4-Way Flow Ceiling
Suspended Type
This slim and stylish indoor unit
achieves optimum air distribution,
and can be installed without the
need for ceiling cavity
Ceiling Suspended Type
Slim body with quiet and wide airflow
Ceiling Mounted Duct Type
High external static pressure
allows flexible installations
Wall Mounted Type
Stylish flat panel design
harmonised with your interior
décor
Air Handling Unit
Integrate your air handling unit in a total
solution for large size spaces such as
factories and large stores.
Floor Standing Type
Concealed Floor Standing Type
Suitable for perimeter zone air
conditioning
Slim Ceiling Mounted Duct Type
Slim and smooth design suits
your shallow ceiling
Elegant appearance with
European style
Wall Mounted Type Wall Mounted Type
Stylish flat panel harmonises
with your interior décor
Floor Standing Duct Type
Large airfiow type for large spaces.
Flexible interior design for each tenant.
(high static pressure type)
Residential Indoor Units with connection to BP units
IndoorUnitLineup
FXMQ-MFV1
FXUQ-AVEB
FXHQ-MAVE
FXMQ-MAVE
FXAQ-PVE
AHUR
FXLQ-MAVE
FXNQ-MAVE
FDKS-EAVMB
FDKS-C(A)VMB
FTKJ-NVMW
FTKJ-NVMS
FTKS-DVM
FTKS-BVMA
FTKS-FVM
FXVQ-NY1
FXVQ-NY16
FXMQ-PVE