This document serves as the Installation & Operation Manual for Hitachi Window Type Air Conditioners, specifically the R32 Inverter Cooling only Series. It provides essential information for the safe and effective use, installation, and maintenance of these units.
Function Description
The Hitachi Window Type Air Conditioner is designed for cooling purposes, utilizing R32 refrigerant. It operates as a cooling-only unit, providing temperature control within specified indoor and outdoor temperature ranges. The inverter technology allows for efficient operation by adjusting compressor speed to maintain desired temperatures, contributing to energy savings. The units are equipped with a remote control for convenient operation and a control panel for manual adjustments. A filter button on the control panel serves as a reminder to clean the air filter, promoting efficient operation and cooling.
Important Technical Specifications
The manual lists several models with varying refrigerant charges and a consistent minimum installation height.
- Refrigerant Type: R32 (mildly flammable refrigerant)
- Operating Voltage: 220V +/- 10%
- Power Point Requirement (RAW-XH24CA): CONNECTION / SPUR UNITS, MINIMUM POWER 220V 30A
- Cooling Operation Temperature Range:
- Outdoor: 18-43 °C (64-109°F)
- Indoor: 17-32°C (62-90°F)
- Room Humidity (Cooling Mode): Should be lower than 90% to prevent dew formation and water dripping.
- Minimum Installation Height: 750mm for all listed models.
- Refrigerant Charge (R32 Max.):
- RAW-XH07CA: 0.43 kg
- RAW-XH10CA: 0.43 kg
- RAW-XH13CA: 0.435 kg
- RAW-XH18CA: 0.63 kg
- RAW-XH24CA: 0.71 kg
- Minimum Installation Floor Area: No restriction based on IEC 60335-2-40, as refrigerant charges are less than 1.842kg.
Usage Features
The air conditioner offers various modes and settings for user comfort and convenience:
- Remote Control Operation: A general-use remote control is provided, featuring buttons for On/Off, Mode (COOL, DRY, FAN), +/- (temperature adjustment), Fan (speed selection: LOW, MID, HIGH, AUTO), Swing (automatic air swing), Sleep, Timer, and Light.
- Manual Control Panel: In case the wireless remote control is lost, the unit can be operated manually using the control panel, which includes buttons for On/Off, Swing, Fan Speed, Time/Temp, Mode, and Filter.
- Temperature Setting: The temperature can be set within a range of 16~30°C using the Time/Temp button.
- Timer Function: The timer can be set from 0 to 24 hours, with increments of 0.5 hours for settings up to 10 hours, and 1 hour for settings from 10 to 24 hours.
- Fan Speed Control: Users can select from LOW, MID, HIGH, or AUTO fan speeds.
- Automatic Air Swing: The Swing button activates the automatic air swing function for better air distribution.
- Safety Precautions: The manual emphasizes critical safety measures, especially concerning the R32 refrigerant. Installation must be performed by authorized dealers or professionally trained technicians. It highlights the importance of proper ventilation, avoiding ignition sources, and ensuring electrical safety during installation, servicing, and repair.
- Grounding: Proper grounding is mandatory, and a special socket conforming to wiring regulations must be used. An electricity leakage protection switch with sufficient power capacity and an air switch are required in the fixed circuit.
- Operating Conditions: The unit is designed to operate within specific outdoor and indoor temperature ranges. Operating outside these ranges may lead to breakdowns or reduced performance.
Maintenance Features
Regular maintenance is crucial for the longevity and efficient operation of the air conditioner:
- Air Filter Cleaning: The air filter behind the intake grille should be washed at least once every two weeks or as needed. The manual provides instructions for removing, cleaning (vacuuming light dust, washing with mild household detergent for heavy dirt), and reinstalling the filter.
- Filter Button Reminder: The "Filter" button on the control panel illuminates after 250 hours of operation as a reminder to clean the air filter. Pressing this button after cleaning resets the accumulated time.
- Cabinet Cleaning: The cabinet should be cleaned with a soft cloth dipped in warm water (below 40°C) and then dried. Harsh chemicals like gas, benzene, or solvent wash should not be used.
- Water Avoidance: Water should not be splashed directly into the unit, especially where micro-computer and circuit plates are located.
- Earth Wire Check: Regularly check if the earth wire is broken or loose to prevent accidents.
- Air Inlet/Outlet Check: Ensure that the air inlet and outlet of the unit are not blocked, as this can lead to bad efficiency.
- Troubleshooting Guide: A comprehensive troubleshooting guide is included to help users identify and resolve common issues such as the unit not operating, poor cooling efficiency, foggy air flows, noisy operation, or condensate leakage.
- Professional Servicing: For any repairs, servicing, or issues beyond basic troubleshooting, users are advised to contact an authorized dealer or local service center. The manual explicitly states that installation, movement, or maintenance should only be performed by appointed units or certified professionals.
- Refrigerant Handling: Strict procedures are outlined for handling R32 refrigerant during removal, evacuation, charging, and decommissioning, emphasizing safety, proper equipment, and compliance with regulations. This includes ensuring no contamination of different refrigerants, using appropriate recovery cylinders, and pressure testing for leaks.
- Electrical Safety during Maintenance: Before any work on electrical components, all electrical supplies must be disconnected. Checks include discharging capacitors, ensuring no live electrical components are exposed, and verifying earth bonding continuity.
- Post-Operation Waiting Period: Always wait at least 3 minutes before switching the air conditioner on again after it has been switched off during cooling to protect the mechanism.
The manual also includes contact information for Arçelik Hitachi Home Appliances Sales Hong Kong Limited and Hong Kong Repair Service, along with an important note on the correct disposal of the product to promote environmental sustainability.
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