Specifications

36
Features
Large capacity DC inverter
compressor
Large capacity high efficient
DC twin rotary compressor
with excellent intermediate
capability.
High efficient compressor
speed control
Comfortable space with small
room temperature changes
and little energy loss is created
by 0.1Hz steps compressor
speed control.
All inverter compressor
When multiple outdoor units are connected a sophisticated
operation is performed by each compressor. Rather than
running one compressor at full load and distributing
refrigerant to one heat exchanger, this control method
operates all compressors at part load and distributes
refrigerant to all of the heat exchangers which allows for the
overall system efficiency to be improved.
Multiple outdoor operation control
The heat exchanger in the outdoor unit is split into two
parts (Top and Bottom). The efficiency of the heat
exchanger has been improved by adopting an optimum
refrigerant path control where the refrigerant is distributed
more into the top heat exchanger as this is where there is
a greater air flow intake.
Heat exchanger refrigerant control
Heat exchanger
Outdoor unit
Large intake
airflow
Fan
Small intake
airflow
High efficient refrigerant flow control
Larger
refrigerant
flow
Hi
g
h efficient refri
g
erant flow control
Lar
g
er
r
efri
g
eran
t
f
l
o
w
EEV
Heat
exchanger
Distributor
High efficient operation
Inefficient operation
Compressor Load level
Capacity
Inverter frequency
0.1Hz
37
A more flexible refrigerant piping work is possible by the use of various piping and RB
Unit connections, for adjustments to the floor layout and building structure.
Flexible piping connection
Flexible installation of RB unit
• The RB unit can be freely positioned between the first branch and the indoor unit.
• The maximum height difference between RB units is 15 m.
*2. RB Unit is not necessary for cooling only use.
RB Unit
(Multi type)
Max. 8 indoor unit
indoor units
Max.3 or 8
Separation tube
Single
connection
Group
connection
&
Single
connection
Group
connection
Individual
cooling and
heating
Application
Simultaneous
cooling and heating
Individual
cooling and heating
Simultaneous
cooling and heating
Cooling
only
RB Unit less
connection*
2
RB Unit
(Single type)
RB unit
Ceiling
RB unit (single type)
•2-way connection
•Up to 2 units can be
connected in series.
• Small & slim design saves space
• A drain pipe is not required
• The control box position can be changed to meet the installation
conditions
• Small design saves space
• A drain pipe is not required
• Simple installation series connection design
Installation possible from either side for
freedom of the control box
Installation possible on
the upper-side for use in
narrow space
RB unit (multi type)
Height
198mm
• Maintenance can be
performed from the side.
• Electrics box can be
temporarily fixed by sliding
down.
• Parts can be replaced easily even at narrow
space in the ceiling.
Easy to maintenance in a narrow space