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The noise from the fan motor is suppressed by introducing PWM:the current applied to the motor is shaped to a quasi sine wave by switching control of a power MOSFET* at a frequency of several ten-thousand Hz.
The round, lower part of the air opening complements the gentle, quiet operation. The auto louver in the upper part of the opening automatically controls upward and downward motion of air flow, while the grille serves as a shutter when stopped.
The large fan and improved resistance of the air-flow path lower the r.p.m. of the blower, thus reducing noise and vibration.
The wireless receiver kit (option) can be installed easily through the hole in the lower cover.
|Type of indoor unit
|Capacity Range [HP]|
With the built-in electronic expansion valve, Hitachi's indoor unit is designed to be freely connected either to outdoor units or other indoor units. Select the outdoor unit of your choice from the list in the catalog (Please refer to the catalog for details of the connection capacity limit, etc.).