Hitachi RAS-25YHA / RAC-25YHA RAS-35YHA / RAC-35YHA INDOOR UNIT Precautions During Installation

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SAFETY PRECAUTION

Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.

Pay special attention to signs of “ Warning” and “ Caution”.The “Warning” section contains matters which, if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may result in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.

The signs indicate the following meanings. (The following are examples of signs.)

This sign in the figure indicates prohibition.

Indicates the instructions that must be followed.

 

 

Please keep this manual after reading.

 

PRECAUTIONS DURING INSTALLATION

 

 

Do not reconstruct the unit.

 

 

Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by

 

 

yourself.

PROHIBITION

 

 

 

 

 

Please ask your sales agent or qualified technician for the installation of your unit.

 

 

Water leakage, short circuit or fire may occur if you install the unit by yourself.

 

 

 

 

 

WARNING Please use earth line.

 

 

Do not place the earth line near water or gas pipes, lightning-conductor, or the

 

 

earth line of telephone. Improper installation of earth line may cause electric

CONNECT EARTH LINE

 

shock.

 

 

Be sure to use the specified piping set for R410A. Otherwise, this may result in

 

 

broken copper pipes or faults.

 

 

 

 

 

 

A circuit breaker should be installed depending on the mounting site of the unit.

 

 

Without a circuit breaker, the danger of electric shock exists.

 

 

 

 

 

 

Do not install the unit near a location where there is flammable gas.

 

 

The outdoor unit may catch fire if flammable gas leaks around it. Piping shall be

PROHIBITION

CAUTION

suitable supported with a maximum spacing of 1m between the supports.

 

 

 

 

Please ensure smooth flow of water when installing the drain hose. If any failure

 

 

 

 

is found in the drain path, water drops from the indoor and outdoor units, causing

 

 

wet household effects.

 

Make sure that a single phase 230V power source is used.

The use of other power sources may cause electrical components to overheat

and lead to fire.

PROHIBITION

WARNING

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

Should abnormal situation arise (like burning smell), please stop operating the

unit and remove plug from the socket or turn off the circuit breaker. Contact your

 

agent. Fault, short circuit or fire may occur if you continue to operate the unit

“OFF”

under abnormal situation.

 

Please contact your agent for maintenance.

Improper self maintenance may cause electric shock and fire.

Please contact your agent if you need to remove and reinstall the unit.

Electric shock or fire may occur if you remove and reinstall the unit yourself improperly.

Avoid an extended period of direct air flow for your health.

PROHIBITION

Do not connect the power calbe with an extension cable or do not plug too many leads of the other electric appliance into the socket where this cable is plugged.

In addition, wire the cable with some allowances to prevent the cable from stretching.

Not doing so will cause an electrical shock, heat generation or fire.

PROHIBITION

 

Do not bundle the power cable, pull it, put something on it, heat it, process it, or put it between things. Breakage of the power cable may result.

Use of a damaged cable may cause an electrical shock or a fire.

PROHIBITION

Do not put objects like thin rods into the panel of blower and suction side

because the high-speed fan inside may cause danger.

PROHIBITION

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Contents Indoor UNIT/OUTDOOR Unit Precautions During Installation Precautions During Shifting or MaintenancePrecautions During Operation Do not climb on the outdoor unit or put objects on itNames and Functions of Each Part Air outletOperation Lamp Yellow This lamp lights during operation Timer Lamp OrangeFilter Lamp Green Attaching the negative ion stick to the filter frameReset buttons Signal emitting window/transmission signTemperature buttons FAN Speed selector Auto Swing button Timer controlVarious Functions Automatic OperationHeating Operation AutoItaliano Français Deutsch English Dehumidifying OperationCooling Operation FAN Operation EnglishItaliano Français Deutsch HOW to SET the Timer OFF-TimerTime button Timer control button Italiano FrançaisHOW to SET the Sleep Timer Spanish Italiano Français Deutsch English Adjusting the AIR DeflectorsHOW to Exchange the Batteries in the Remote Controller AIR Filter MaintenanceProcedure Cleaning of Front Panel Maintenance AT Beginning of Long OFF PeriodCapabilities Timer PROGRAMMING/SLEEP Timer OperationInformation Various FunctionsRegular Inspection After Sales Service and WarrantyCheck to see if the power plug is securely inserted Check to see if the unit’s earth line has been connectedDetails, consult your sales agent Memo Memo Memo 447 a

RAS-25YHA / RAC-25YHA RAS-35YHA / RAC-35YHA INDOOR UNIT specifications

Hitachi RAS-25YHA and RAS-35YHA indoor units represent cutting-edge technology in the world of air conditioning, designed to offer efficient cooling and heating solutions for residential and commercial spaces. These models prioritize comfort, energy efficiency, and advanced functionalities, making them ideal choices for modern living environments.

One of the prominent features of the RAS-25YHA and RAS-35YHA models is their robust energy efficiency. These units utilize advanced inverter technology, which allows the compressor to adjust its speed based on the cooling or heating demands of the space. As a result, users benefit from lower energy consumption and reduced electricity bills, while maintaining optimal temperature levels.

The sleek and compact design of the indoor units ensures they blend seamlessly into various interior styles. The units are available in a range of colors, catering to diverse aesthetic preferences while maintaining a minimalist look. This design not only enhances the overall appearance of the space but also maximizes airflow performance.

Both models are equipped with Hitachi’s innovative filter technology, which works to purify the air inside the environment. The filters effectively capture dust, allergens, and other particles, ensuring that occupants breathe cleaner and healthier air. Regular filter maintenance is simple, which adds to the overall convenience of using these units.

Another key feature is the quiet operation of the RAS-25YHA and RAS-35YHA. With specially designed fan blades and sound-dampening technology, these indoor units produce minimal noise, allowing users to enjoy a peaceful atmosphere whether at home or in the workplace.

The user-friendliness of these air conditioning units is enhanced by a remote control and an intuitive interface. Users can easily adjust the settings, change the modes, and schedule operations according to their convenience.

In summary, the Hitachi RAS-25YHA and RAS-35YHA indoor units are exemplary models that showcase advanced air conditioning technology. With their energy-efficient inverter systems, sleek designs, effective air purification, quiet operation, and user-friendly controls, they are an excellent investment for those seeking reliable and efficient climate control solutions in their spaces.