WMV-SERIES
MODULAR DC INVERTER VRF
ALWAYS BETTER CAC SOLUTION FROM GREE
GENERAL FEATURES HIGH LIGHT
•
Powered by DC Inverter Technology
•
50Hz/60Hz Power Supply
•
Modular Outdoor Unit Design
•
Max ODU capacity 180kW (4 x modules)
•
7 type of indoor units from 2.2 to 28kW
•
Max Indoor unit connection: 64 units
MODULAR OUTDOOR UNIT RANGE
5 Basic Modules (8/10/12/14/16HP)
22.4
28.0
33.5
40.0
Max Combination: 4 modules; Max Capacity: 180kW (64HP)
45.0kW
INDOOR UNIT RANGES
Wall Mounted Indoor Unit (Build-in EXV Optional)
Cap (kW)
2.2
2.8
3.6
4.5
5
5.6
7.1
8
Cap (TR)
0.6
0.8
1.0
1.3
1.4
1.6
2.0
2.3
Floor & Ceiling Indoor Unit
Cap (kW)
2.8
3.6
5
7.1
9
11.2
12.5
Cap (TR)
0.8
1.0
1.4
2.0
2.6
3.2
3.6
INDOOR UNIT RANGES
Duct Type Indoor Unit (High ESP/Low ESP/Build-in Water Pump/Build-in EXV)
Cap (kW)
2.2
2.8
3.6
4.5
5.6
7.1
9
11.2
14
Cap (TR)
0.6
0.8
1.0
1.3
1.6
2.0
2.6
3.2
4.0
4-Way Cassette Indoor Unit
Cap (kW)
2.8
3.6
4.5
5
5.6
6.3
7.1
8
9
10
11.2
12.5
Cap (TR)
0.8
1.0
1.3
1.4
1.6
1.8
2.0
2.3
2.6
2.9
3.2
3.6
TECHNICAL FEATURES
1.
DC Inverter Compressor
2.
DC Inverter Fan Motor Link Control.
3.
Precision Capacity Output Control Technology
4.
Excellent Refrigerant Balance Technology
5.
Original Created High Pressure Chamber Oil Balance
6.
Environment friendly R410A Refrigerant
7.
Hyper Heating & Intelligent Defrost Technology
8.
Superior Controllers & Software Support
DC INVERTER COMPRESSOR
Rotating speed of the compressor and input
frequency is linear relation, compressor
speed changed by adjusting the input
power frequency, so that the compressor
capacity is changed.
60 f (1  s)
n
p
The Rotor of DC Inverter compressor
is permanent magnet, which has no
energy loss from induction current heat
generating, it’s the key of energy
saving.
Compressor
Capacity
Input frequency
20Hz~120Hz
n
Compressor motor rotating speed
f
Input Power frequency of compressor
s
Induction motor slip ratio
p
Number of pole-pairs of compressor motor
DC INVERTER COMPRESSOR
WESTPOINT DC Inverter VRF powered by
HITACHI DC Inverter Scroll Compressor
——Variable Speed thanks to permanent magnetic
synchronous motor, lower energy loss.
——High Pressure Chamber Design
——New DC motor Design (Centralized Roll)
——WESTPOINT 180 Degree Sine Wave DC Inverter
Driving Technology + PWM Capacity Control
Technology
DC INVERTER COMPRESSOR
What’s High Pressure Chamber?
Compressed gas discharged from the fix
scroll full fills the whole hermetic chamber
of compressor, then goes out from the
exhaust, that the whole compressor shell
is high temperature and the pressure
inside the compressor chamber is high
(except suction inlet and the suction
chamber).

Higher Efficiency!
High pressure chamber compressor direct suction, no overheat suction loss, increase compressor efficiency.

Lower Noise and Vibration!
High pressure gas inside the compressor shell, lower exhaust pressure fluctuation.

Higher Reliability!
Oil and exhaust gas well separated inside the compressor, using the pressure difference to satisfy the oil supply, which is
not depended on compressor rotating speed, and high reliability in lubricating and sealing
DC INVERTER COMPRESSOR
Enhanced Compressor Performance
New DC motor
(centralized roll)
raise the low
frequency
performance
New design
Compressor
efficiency
HP Chamber
structure can raise
the high and
middle frequency
performance
Highly
raise the
low
frequency
performa
nce
Original design
Rotating speed
DC INVERTER FAN MOTOR LINK CONTROL TECHNOLOGY
Various Optimized Air Flows
For different loading status of compressors
DC Inverter Fan Motor
Sine-wave Driving Control
Smoother Fan Motor
Operation
Communication between
Modules
Cross-learning between
Modules
Flexible Fan Motor
Adjusting
Most Optimized
Operation
PRECISION CAPACITY OUTPUT CONTROL TECHNOLOGY
Software programming for precision capacity out put control:
PID Self-adoption Control
Thanks to the PID Self-adoption, the system can find out a best compressor
output that satisfies both temperature control & system stability
Simulating curved face for a Smooth Capacity Output of the WMV-RM Modular VRF System
PRECISION CAPACITY OUTPUT CONTROL TECHNOLOGY
Principle of Precision Control
(1)Capacity division between ODU Modules
Principle:
Capacity output of each module not exceed 75% of the module capacity.
(2)Capacity division between compressors in a single module.
Principle:
After total capacity divided to each module, the system will use overflow
handling to divide the capacity again to Inverter compressor and fixed speed
compressors, that is to start to the Inverter compressor first, after Inverter
compressor full loaded, start the 1st fixed speed compressor then 2nd fixed
compressor.
EXCELLENT REFRIGERANT BALANCE TECHNOLOGY
Furthest prevent the negative effect of unbalance refrigerant
flow between the modules:
Analysis the Operating
Status of each module
Detail situation of
unbalanced refrigerant
Flow between modules
Precise adjustment
is done
Real-time refrigerant
flow monitoring
Precise control
redistributes
the refrigerant flow
Sending control signal to
the EMV and EXV
EXCELLENT REFRIGERANT BALANCE TECHNOLOGY
An example of three module combination:
STOP
Prevent
Refrigerant
from entering
EXV
CLOSED
Refrigerant
recovered by the
other two modules
Liquid Pipe
Gas Pipe
RUNNING
EXV
OEPN
Liquid Pipe
RUNNING
EXV
OPEN
ORIGINAL CREATED HP CHAMBER OIL BALANCE
High pressure chamber oil balance technology

1：High pressure chamber compressor，has its own patent design of oil
balance pipe，makes the oil that higher than the oil outlet can discharge
automatically, avoid the compressor from leak of oil.

2：Adopt new oil separator，original oil balance pipeline design，achieves an
efficient oil link-balance between modules.

3: Cyclical oil balance program design insures the lowest running oil volume
under any critical working condition, it is a highly reliable oil balance model.
ORIGINAL CREATED PRESSURE BALANCE TECHNOLOGY
High Pressure Balance Technology through
the control of:
1) Digital Compresser stepless output
2) DC inverter fan motor smooth speed
regulation
Dual Tech
Link-Control
What’s the benefit from Dual-Technology Link Control?
According to Ambient conditions the modules can learn from each other and linkcontrol the fan motors.
Achieve the pressure balance between the modules without having high pressure
protection.
Strongly support the equalizing control for the refrigerant.
Ensure the indoor side refrigerant supplying.
ENVIRONMENT FRIENDLY R410A REFRIGERANT
R410A is environment friendly
refrigerant, with higher heat
transfer performance, lower
pressure-loss, smaller
temperature-slipping and ZERO
ODP .
Minimize the system piping
dimension design, that reduce
huge amount of total refrigerant
HYPER HEATING TECHNOLOGY
Multi-Compressors Time-Division Starting
Technology can avoid a big starting
current, reduce the impact to power
network and realize the soft-start .
50
45
40
Ｔｃ（℃）
35
30
Digital Scroll Compressor can immediately
perform Big Capacity Operation right after it
started, providing higher Heating Capacity.
25
20
15
10
Reaching 100% heating capacity
Only in 30 seconds!
5
0
00:00
（84kW System）
00:05 00:10
00:15 00:20
00:25 00:30
Time(Minute)
時間（分）
00:35 00:40
00:45 00:50
Utilizing the advantage of quick start
speed of the fixed speed compressors, it
can satisfy the big heating capacity in
very short time.
INTELLIGENT DEFROST TECHNOLOGY
Traditional Defrost Program
•
Simply execute defrosting according to the set timing.
•
The defrost timing is not complied with actual operation requirement.
Defrost without any capacity fading
Heat loss
INTELLIGENT DEFROST TECHNOLOGY
Intelligent Defrost Technology
•
•
•
•
Humanization Technology which considers the maximization of user’s benefit.
Defrosting Program is designed from the attention of heating efficiency and
operation reliability
Precise Defrosting timing, which is intelligent in deed.
Defrosting control includes pressure optimizing, that can obviously lengthen the time
gap between two defrost operations, reduce the times of defrosting, energy loss has
been decrease by 75% with highly comfortable heating operation.
Defrost starts only while there is a certain capacity fading
SUPERIOR CONTROLLERS & SOFTWARE SUPPORT
VARIOUS CONTROLLERS
Centralized controller:
Connect up to 1024 indoor units
Individual & Group control
Week timer
Self-checking Function
Up to 1000M distance of cable connection (extendable)
Smart Zone Controller
Connect up to 16 indoor units
Wired Controller (touch button)
Wired Controller (Standard LCD type)
Wireless Remote Controller (Various choices)
SUPERIOR CONTROLLERS & SOFTWARE SUPPORT
LONG DISTANCE MONITORING SYSTEM
Advanced Net Work Communication realizing a long distance centralized control
All Indoor Units are connected to one
network bus, easy group and easy
administration.
WESTPOINT Patent technology – No
Limited Group Control, never worry
about the control of your thousands
indoors.
SUPERIOR CONTROLLERS & SOFTWARE SUPPORT
TESTING & DEBUGGING TOOLS (BOTH SOFTWARE AND PORTABLE DEBUGGER)
Exhaust Temp, Condensing Pipe Temp,
Steps of EXV, High pressure value…
All that you have to is plug and check!
PORTABLE DEBUGGER
SUPERIOR CONTROLLERS & SOFTWARE SUPPORT
PIPING DESIGN SOFTWARE – WESTPOINT WMV SELETOR V3.0
Easy Piping Design for your WMV System from WMV SELECTOR V3.0
Saving your design to Microsoft Excel (2003 & 2007) and AutoCAD (2004 & 2008)!