Hitachi YUTAKI S80 Series - Advanced Technology

2. Features and benets
TCGB0075 rev.0 - 11/2012
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2.2.9 Advanced technology
The functionality benets explained before (Highly efciency system, wide capacity range, etc.) are direct consequence of
the advanced technology applied on all the system components.
Then, the main features on different components of the system will be detailed:
Heating refrigerant ow
- Super high-stream fan - Silent fan unit - DC fan motor with outstan- ding efficiency - PWM (pulse width modula- tion) concept of speed control
Side-flow technology
High-efficiency heat exchanger
Outdoor unit heat exchanger
Outdoor unit expansion valve
Improved performance by sub-cooling circuit
Sub-cooling circuit
Reversing valve
Outdoor unit compressor
- Highly efficient scroll compressor - High pressure shell - Lubrication - New design of stator coils - DC compressor with neodymium magnet - Low noise
Liquid receiver
Stop valve of the gas pipe
Stop valve of the liquid pipe
Water pump
Incorporated to protect the plate heat exchanger
Water strainer
T-branch
Safety valve
3-way valve
Air purger
Check valve
Indoor unit compressor
1st cycle expansion valve
Check valve
Expansion vessel
DHW tank
Solenoid valves
R410A - R134a
R134a - H2O
R410A - H2O
2nd cycle expansion valve
Highly efficiency plate heat exchanger: - High heat transfer surface coefficient - High flow turbulence in the fluids - Lower heat losses
- Low power consumption - Three different pump motor speeds
- Combination flexibility - Stainless steel tank - Efficiency thermal insulation - High efficiency tank - Compact size and redu- ced installation space - Cathodic protection - Permanent anti-corro- sion system - Electric heater inte- grated - LCD and manometer integrated
In charge of the SMART cycle control
- Highly efficient scroll compressor - High pressure shell - Lubrication - New design of stator coils - DC compressor with neodymium magnet - Low noise
- Quick switching - Great longevity - Compact design
Indoor unit
Outoor unit