This document provides an overview of VRV (Variable Refrigerant Volume) air conditioning systems. It defines VRV and describes its concept of varying refrigerant volume to indoor units for flexible capacity control. The document outlines the VRVIII range, which includes 14 outdoor unit models with capacities from 6.4 to 29 tons. It also describes the extensive line of indoor units that can be connected. The document discusses VRVIII features like extended piping lengths up to 1000m, high external static pressure tolerance, and low sound levels. It notes VRVIII systems' environmental benefits such as high efficiency, use of an ozone-friendly refrigerant, and compliance with RoHS directives. The document outlines individual and centralized controller options

1. The professional solution for your professional project
3rd
Generation of VRV

2. What is VRV®
?
Definition, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
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3. VRV®
= Variable Refrigerant Volume
Variable: The system responds depending on the required
capacity.
Refrigerant: Direct expansion system.
Volume: The refrigerant volume is regulated by an electronic
expansion valve in each indoor unit...
WHAT IS VRV®
? - DEFINITION
What is VRV®
? Definition→

4. POSITION AMONG OTHER AIR CONDITIONING SOLUTIONS
single room
SPLITS
cooling/heating
by air
ROOFTOPS
AHU
multiple room
MULTI SPLITS
cooling/heating
by water
CHILLERS
+ FANCOILS
What is VRV®
? Position among other air conditioning solutions→
residential
RESIDENTIAL
COMMERCIAL
& OFFICE
cooling/heating
by refrigerant

5. HOW DOES IT WORK? - VRV®
Concept
What is VRV? VRV→ ®
concept
Up to
58 Different Type and Capacity Indoor Units
190 m pipe run
6 – 29 T.R.
Cooling Capacity
Liquid
Gas
new new

6. VRV®
Concept - OUTDOOR UNIT
What is VRV? VRV→ ®
concept outdoor unit
INV ST1INV
INV
ST
100%
100%
Comp. capacity control
load
PCB
INV ST P
InverterInverter
compresscompress
oror
InverterInverter
fanfan
• Control of the refrigerant volume by inverter compressor:
Indoor
Unit

7. VRV®
Concept - INDOOR UNIT
What is VRV? VRV→ ®
concept indoor unit
T1 = Inlet refrigerant temperature sensor (liquid)
T2 = Outlet refrigerant temperature sensor (gas)
T3 = Suction air temperature sensor
T4 = Set temperature from Remote controller air temperature
Suction
Discharge
Plower speed
Liquid
Gas
Electronic expansion valve
(0~2000 pulses)
Evaporator
T4
T1
T3
Blower
T2
CPU
Modulating coolingModulating cooling
capacity givescapacity gives
optimum comfortoptimum comfort
Modulating coolingModulating cooling
capacity givescapacity gives
optimum comfortoptimum comfort

8. HOW DOES IT WORK? - VRV®
Concept
What is VRV? VRV→ ®
concept
ST1ST1
PCB
PINV
T
CPU
T
CPU
T
CPU
T
CPU

9. What is VRV®
?
Definition, History, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
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10. 14 models
VRV®
Capacity RANGE
VRVIII Range Outdoor units→
for high ambient
for cold regions
water cooled
Mini-VRV
Model 8 10 12 16 18 20 22 24 26 28 30 32 34 36
6.4 / 8 / 9.6
ton
12.8 ~ 19.2
ton
20.8 ~ 28.6
ton
6.4 to 29 ton
New

11. VRV®
Outdoor temperature operation range.
49 kW
Cooling Heating
5
0
4
0
3
0
2
0
1
0
0
-10
-20
50°C
DB
15,5°C WB
- 20°C
WB
- 5°C
DB
OPERATIONRANGE
Heat Pump High AmbientHeat Pump High Ambient
VRVIII Range Outdoor units→

12. VRV®
Indoor units range.
VRVIII Range Indoor units→
Super wide range of well-designed indoor units
Roundflow Ceiling
mounted cassette
2-way blow ceiling
mounted
4 way blow ceiling
mounted
Ceiling mounted corner Small concealed ceiling
unit
Slim concealed ceiling unit Concealed ceiling unit Concealed ceiling unit Wall mounted unit Ceiling suspended unit
4-way blow ceiling
suspend unit
Floor standing unit Concealed floor standing
unit

13. What is VRV®
?
Definition, History, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
new
new
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new

14. Extended piping lengths:
Flexible piping design: max. total piping length: 1000 m
VRVIII features Piping Limits→
Height difference
outdoor-indoor
Up to 90 m
Branch length
Up to 90 m
Max. actual piping length
165 m
Max. equiv. piping length
190 m
Max. total piping length
1000 m
VRV®
Piping limits
new
new
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15. REFNET headerREFNET headerREFNET jointREFNET joint
ShortShort
installationinstallation
time !time !
ShortShort
installationinstallation
time !time !
- simplified refrigerant piping system- simplified refrigerant piping system
- more flexible than water piping- more flexible than water piping
Installation SimplicityInstallation Simplicity

16. VRV®
outdoor unit fan External Static Pressure
High external static pressure 78 Pa
VRVIII features External Static Pressure→
ne
w
78 Pa29.4 Pa

17. VRV®
outdoor unit Back up function
Reliable operation of the compressors
VRVIII features Back up function→
INVINV ST1ST1 INVINV ST1ST1 INVINV ST1ST1
TroubleTrouble

18. VRV®
sound level
Low operation sound level
- Indoor units: very low sound
operation, down to 25dB(A)
- Super Silent Mode function is reducing
the outdoor unit sound level
down to 45dB(A)*
- 65dB(A) Full load operation
sound level for the outdoor unit.
dB(A) Perceived loudness Sound
0 Treshold of hearing -
20 Extremely soft Rustling leaves
40 Very soft Quiet room
60 Moderately soft Normal conversation
80 Very loud City traffic noise
100 Extremely loud Symphonic orchestra
120 Treshold of feeling Jet taking off
VRVIII features Low sound level→
* Resulting in reduced capacity

19. What is VRV®
?
Definition, History, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
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new
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20. Optimized full load Efficiency
VRVIII environmental benefits Efficiency→
VRV®
Full Load Efficiency
Dry Bulb outdoor temperature °C
Kw / ton
Kw/ton
8HP system
6.4 ton (Nominal)
100% LOAD
18°C indoor WB
Up to
25%
Lower

21. Under partial load conditions power consumption is less
VRV®
Partial Load Efficiency
The percentage of the Load Applied on the system
Kwatt/ton
Kwatt/ton
8HP system
6.4 ton (Nominal)
35°C DB Outdoor temp.
18°C indoor WB
VRVIII environmental benefits Efficiency→

22. Ozon-friendly refrigerant
Compact outdoor unit -> smaller volume of refrigerant is required.
Improved refrigerant containment
Brazing connections to ensure improved refrigerant containment.
No Phase Out Dates
No dates for phasing out usage or manufacturing of this refrigerant.
Approximately 15% to 20% less refrigerant than air conditioning market
VRV®
Ozone-friendly refrigerant
VRVIII environmental benefits Ozone friendly refrigerant→

23. RoHS: Restriction of Hazardous Substances
VRV®
In line with RoHS directive
•Lead (Pb)
•Cadmium (Cd)
•Hexavalent Chromium (Cr6+)
•Mercury (Hg)
•Polybrominated biphenyls
(PBB)
•Polybrominated
diphenylether (PBDE)
VRVIII environmental benefits RoHS→
Phasing out of:

24. What is VRV®
?
Definition, History, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
new
new
new
new

25. VRV®
Individual controllers:
VRV Wiring control connection
VRVIII controllers Individual controllers→
Up to 58 indoors

26. VRV®
Individual controllers:
User friendly control systems: individual controllers
infrared remote control simplified remote control
simplified remote control for hotel applications wired remote control
VRVIII controllers Individual controllers→

27. VRV®
Centralized Controllers:
Residential Centralized Controller
VRVIII controllers centralized controllers→
new
Big screen.
Display Outdoor
temperature
Easy to use.
One
Button for
Each unit
16 indoor units
can be
controlled .

28. VRV®
Centralized Controllers:
Simply control up to 16 indoor units
VRVIII controllers centralized controllers→

29. VRV®
Centralized Controllers:
User friendly control systems: network solutions
VRVIII controllers centralized controllers→
Control
1024 indoor
units
i-
manager
Control 128
indoor units
i-touch

30. VRV®
Centralized Controllers:
Touch Screen Controller
VRVIII controllers centralized controllers→
128 indoor units can be controlled
Windows graphical user interface
Proportional Power Division
Fire alarm forced off connection
Yearly schedule timer
Password security
Web Access

31. VRV®
Centralized controllers:
I-manager Computer Controller
IPU
VRVIII controllers centralized controllers→
Controls up to 1024 indoor units
Import your own CAD layout.
Tenant Electricity Billing (PPD).
Energy Saving (Demand Control & ECO-
mode)
Web Access

32. VRV®
Building Management System interfaces
VRV can be connected to any BMS system
OPEN NETWORK
Lonworks Networks
Compatible Gateway
Integrated control system connecting
VRV®
system with BMS system
VRVIII controllers BMS→

33. PPD
Power Proportional Division

34. Concept
1F
2F
3F
4F
Tenant A
Tenant B
Tenant C
VRV
Centralized
controller
Displayed data
For each tenant
Company A: X kWh
Company B: Y kWh
Company C: Z kWh
Wattmeter

35. What is VRV®
?
Definition, History, Concept
VRVIII Range
Outdoor units, indoor units.
VRVIII features
Piping limits, ESP, Foot print.
VRVIII environmental benefits
Efficiency, RoHS.
VRVIII controllers
Individual, centralized controllers, BMS interfaces.
Why VRV?
CONTENT
new
new
new
new

36. Why VRV?
Benefits for Consultants:
Benefits for Owners / Developers:
Benefits for Contractors:
Benefits for End Users:
Easy and fast design (software tools).
Single supplier contact.
Comprehensive solution.
Environment friendly.
Flexible and scalable.
Advanced controllers.
Easy and fast design (software tools).
Single supplier contact.
Comprehensive solution.
Environment friendly.
Flexible and scalable.
Advanced controllers.
Why VRV? Consultants→

37. VRV®
selection software
User friendly & powerful selection software
VRV®
XPRESS VRV®
PRO
- user friendly
software
- allows rapid VRV®
selection of units
and pipes
- simple to use
- complete
- 3 separate modes:
• expert mode:
selection of the
most appropriate
system
+ estimation of power consumption
• quick mode:
selection of the most appropriate system
• drawing mode enables the user to design a
system in no time
Why VRV? Consultants→

38. Why VRV?
Benefits for Consultants:Benefits for Owners / Developers:
Fast completion time.
Low maintenance cost.
Space Saving.
Phase by phase installation.
Phase by phase commissioning.
Tenant Electricity Billing.
Fast completion time.
Low maintenance cost.
Space Saving.
Phase by phase installation.
Phase by phase commissioning.
Tenant Electricity Billing.
Why VRV? Owners / Developers→

39. Benefits for Owners / Developers:Benefits for Contractors:
Why VRV?
Faster installation time.
Easy installation.
System Reliability.
Easy maintenance.
One Supplier.
Faster installation time.
Easy installation.
System Reliability.
Easy maintenance.
One Supplier.
Why VRV? Contractors→

40. Benefits for Contractors:Benefits for End Users:
Why VRV?
For who is VRV®
? End Users→
Low electricity bills
Easy controls.
Low noise.
Reliability.
Comfort / (Heating & Cooling).
Low electricity bills
Easy controls.
Low noise.
Reliability.
Comfort / (Heating & Cooling).

41. VRV®
Solutions: Reliability
Daikin: 85 years of know-how and experience
 High Quality Product
 Continuous R&D
 Powerful Technical Support
 After Sales Service
 Strong Sales Network
 Environmental Activity
 Air-conditioning Manufacturer.
For who is VRV®
? VRV→ ®
solutions: reliability

42. Thank you for your
attention