Hitachi RAC-25FXA RAC25FXA 用户手册
产品代码
RAC25FXA
1-4
1.2
FEATURES AND BENEFITS
High economical efficiency operation
HITACHI uses the high technology to achieve
the high operation efficiency. The applications of
the following technologies provide HITACHI to
achieve results like the great power saving due to
heat recovery system.
the following technologies provide HITACHI to
achieve results like the great power saving due to
heat recovery system.
All PAM Inverter
Inverter driven systems have a big performance
advantage over constant speed systems. The
variable compressor can make a very fast start-up
and reach the setting temperature rapidly, then
reduce the rotation speed to achieve energy
savings of about 30% with no loss of comfort.
Moreover, only Hitachi’s DC driven fans and
compressors deliver about 10% better
performance than AC inverters. HITACHI is the
world’s pioneer of DC inverter systems and PAM
in room air conditioners.
variable compressor can make a very fast start-up
and reach the setting temperature rapidly, then
reduce the rotation speed to achieve energy
savings of about 30% with no loss of comfort.
Moreover, only Hitachi’s DC driven fans and
compressors deliver about 10% better
performance than AC inverters. HITACHI is the
world’s pioneer of DC inverter systems and PAM
in room air conditioners.
Inverter Control
Hitachi’s PAM control system is able to keep
the current pulse waveform to avoid distortion. It
enhances the power efficiency. The cutting edge
device is employed in HITACHI
MONOZONE/MULTIZONE for your comfort and
energy saving for our environment.
enhances the power efficiency. The cutting edge
device is employed in HITACHI
MONOZONE/MULTIZONE for your comfort and
energy saving for our environment.
Rapid start up
The variable
speed compressor
(inverter) enables
the system to rapidly
reach the desired
room
(inverter) enables
the system to rapidly
reach the desired
room
temperature
setting.
Once the desired
room
temperature
has been achieved,
the compressor
rotation speed is
reduced, saving up
to 30% in energy
usage (when
compared to
conventional
systems) without
compromising
comfort levels
the compressor
rotation speed is
reduced, saving up
to 30% in energy
usage (when
compared to
conventional
systems) without
compromising
comfort levels
High performance, heating at –15°C
H
ITACHI’s PAM inverter system achieves the
effective utilization of power input and minimizes
loss less than 1%. You can enjoy high COP, top
class in industry. Especially heating performance is
improved and you can enjoy heating comfort even
at -15°C degree ambient temperature
loss less than 1%. You can enjoy high COP, top
class in industry. Especially heating performance is
improved and you can enjoy heating comfort even
at -15°C degree ambient temperature
Auto-Restart -
The Auto-restart mode comes as a standard
feature and the unit automatically resumes
operation in the previous mode after power
resume from failure.
operation in the previous mode after power
resume from failure.
Auto Changeover
The built-in microcomputer continuously selects
the best operating mode automatically to provide
maximum comfort, based on the set temperature
and measurements taken by a sensor.
maximum comfort, based on the set temperature
and measurements taken by a sensor.
DC 2-Cylinder Rotary compressor
Hitachi’s DC 2-Cylinder rotary compressor has
less vibration and higher efficiency than conventional
rotary compressors
Two rotating cylinders ensure well-balanced
rotary compressors
Two rotating cylinders ensure well-balanced
rotations unlike the conventional single rotary type,
thus vibration noise is greatly reduced.
The compressor’s operation is improved by
moving two independent cylinders efficiently
moving two independent cylinders efficiently
Comparison of Vibration
Easy servicing
Self-diagnosis
In case failure occurs to the air conditioner, by
pressing (INFO) button of the remote controller,
an error code will be displayed.
pressing (INFO) button of the remote controller,
an error code will be displayed.
T
em
per
at
ur
e
Non Inverter
C
om
pr
ess
or
(R
PM)
Time
Inverter
Non Inverter
Inverter
Superior Performance
DC Inverter Motor
AC Inverter Motor
10% Gain
Mo
to
r Ef
fi
ci
e
n
c
y (%
)
Motor RPM
DC 2-Cylinder
Rotary
Rotary
Conventional Single
Rotary
Rotary