Technical information

25
Corrosion resistant of the heat exchanger has been
improved by the introduction of blue fin treatment to the
outdoor unit’s heat exchanger.
Adoption of blue fin heat exchanger
By adopting a large sized accumulator, the not completely
vapourised refrigerant stays inside of the accumulator to
ensure no liquid refrigerant is being fed into the compressor.
Liquid flow back protection
If one compressor fails, backup operation will be performed
by the remaining compressors*.
*: Note: Backup operation may not be possible depending on the trouble state.
Backup operation
Innovative compressor control logic has been introduced in
order to balance the refrigerant mass flow rate of each
outdoor unit by controlling the inverter speed.
Advanced refrigerant control
Balance operation
condition
Unbalance operation
condition
ON
ON
ON
ON ON OFF
Master Slave 1
Slave 2
DC
3
DC
2
DC
1
Master Slave 1
Slave 2
DC
3
DC
2
DC
1
Load level
Hydrophilic coating
Cobalt Blue protection
Standard chromate protection
Aluminium base material
Blue fin heat exchanger
from
Evapolator
Liquid refrigerant
(stays inside of
accumulator)
Completely
vapourised refrigerant
Large sized
Accumulator
Compressor