Monozone/Multizone (QH8,NH7A,NH6A,NH5,QH5) Summit (WX8)(FX8)(DH7A)(FH6)(YH6)(YH5A) Bigflow (G4,GH4) Technical Catalogue

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1 Monozone/Multizone (QH8,NH7A,NH6A,NH5,QH5) Summit (WX8)(FX8)(DH7A)(FH6)(YH6)(YH5A) Bigflow (G4,GH4) Technical Catalogue Monozone/Multizone Outdoor Unit RAC RAM Monozone/Mutizone Indoor Unit RAK RAF RAI RAD Summit and Bigflow RAS RAF RAD

2 1-2 SYSTEM DESCRIPTION 1.1 FEATURES AND BENEFITS OF MONOZONE (RAC) & MULTIZONE (RAM) OUTDOOR UNITS Monozone/Multizone All DC PAM Inverter Multi Air Conditioners with Twin Rotary and Scroll Compressors HITACHI proudly introduces the new line up of Monozone/Multizone series in order to respond to the request of air conditioning markets, for small and medium capacity units. A new one-room type MONOZONE is added to the MULTIZONE series in which up four indoor units can be connected to one outdoor unit. Thus, small offices, hotels, shops or houses can be air-conditioned properly by using combinations of the one-room type to four-room types of indoor and outdoor units. What s more, the onboard PAM provides high power and performance for greater energy efficiency. Creating the optimum, comfortable air-conditioned environment is Hitachi s specialty. New CutOut design outlook for premium class MULTI indoor units WALL type 2.5kW RAK-25QH8, 3.5kW RAK-35QH8 and 5kW RAK-50QH8 New CutOut design outlook for premium class MULTI indoor units FLOOR type 2.5kW RAF-25QH8, 3.5kW RAF-35QH8 and 5kW RAF-50QH8. New control system incorporating ➀ 4 speed FAN mode selection remote control ➁ Connectable to H-LINK using optional adaptor ➂ Connectable to optional Weekly TIMER ➃ Connectable to optional WIRED remote control (except for duct type indoor) Maximum Total Combination kilowatt of 150% HITACHI produces eco-friendly room air conditioners by using a new refrigerant, HFC (R410A), which does not destroy the ozone layer, and is developing technologies for saving energy and reducing power consumption. Various Indoor units and combinations The new line-up of new Monozone/Multizone series indoor units has been extended up to 4 indoor units in 18 types to find various building requirements. MULTI Combinations Indoor Unit Nominal Kilowatt (kw) Type RAK - QH8 O O O - - RAK - NH6A O O O O - - RAK - NH5A O - RAF - QH8 - O O O - - RAF - NH5 - O O O - - RAD - NH7A O O O O - - RAI - NH5A - O O O - - O: AVAILABLE MONO Combinations Indoor Unit Nominal Kilowatt (kw) Type RAK - NH6A - O O O - - RAK NH5A O - RAF - NH5 - O O O - - RAD - NH7A - O O O - - RAI - NH5A - O O O - - Outdoor Unit RAC NH5 - O O O O - O: AVAILABLE Minimum and maximum combination of Outdoor and Indoor Units Outdoor Unit Model Indoor Unit Minimum Combination Kilowatt (kw) Maximum Combination Kilowatt (kw) Minimum Combination of Indoor Unit Maximum Combination of Indoor Unit Minimum Individual Operation Kilowatt (kw) RAM-40QH RAM-55QH RAM-65QH RAM-72QH RAM-80QH RAM-90QH RAM-130QH ) In case that RAM-40/55/65/72/80/90QH5 is used, the minimum quantity of indoor unit to be connected shall be 2 2) In case that RAM-130QH5 is used, the minimum quantity of indoor units to be connected shall be 4. 3) Simultaneous operation of cooling (dry) and heating is not available

3 SYSTEM DESCRIPTION 1-3 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. These technologies are: 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. High performance, heating at 15 C HITACHI 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 Superior Performance Motor Efficiency (%) DC Inverter Motor 10% Gain AC Inverter Motor Auto-Restart If auto-restart mode was selected at the ON/OFF switch, the unit automatically resumes operation in the mode that was in use beforehand. Inverter Control Motor RPM 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. * When timer is set, Auto Restart feature to previous mode is not available Auto Changeover (for RAC-25/35/50/65NH5) The built-in microcomputer continuously selects the best operating mode automatically to provide maximum comfort, based on the set temperature and measurements taken every 10 minutes by a sensor. Temperature Compressor (RPM) Non Inverter Time Rapid start up The variable Inverter speed compressor (inverter) enables the system to rapidly reach the desired Non Inverter room temperuature setting. Once the desired Inverter room themperature 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

4 1-4 SYSTEM DESCRIPTION Digital DC scroll compressor (for RAM-80QH5) The motor uses digital control to maximize PAM control performance Loss during high-speed revolution is reduced, thanks to digital control of the motor. Three balancers mounted on the crankshaft lessen shaft run out during high-speed revolution. Efficient operation with drastically reduced refrigerant leakage is ensured by the automatic compression system, in which that tip of the slewing scroll is kept in absolute contact with the fixed scroll, in addition to special processing of the scroll surface. Use of the HFC new R410A Refrigerant HITACHI developed and introduced all models to meet the global needs to help protect the Earth s environment by using non-ozone depleting refrigerant, R410A as Hitachi s standard series. Easy installation (for RAM-90QH5) The 5-room model covers up to 75m length with vertical interval of up to 20m. Easy servicing Self-diagnosis Errors are easily identified by the LED blinking patterns of the indoor and outdoor units. Twin rotary compressor (for RAM- 40/55/65/72/90/130QH5 and RAC- 25/35/50/65NH5) Hitachi s new twin rotary compressor has less vibration and higher efficiency than conventional 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 Comparison of Vibration Conventional Single Rotary New Twin Rotary

5 SYSTEM DESCRIPTION FEATURES AND BENEFITS OF MONOZONE/MULTIZONE INDOOR UNITS RAK - Wall Type RAK-25QH8 (B), RAK-35QH8 (B), RAK- 50QH8(B) RAK-65NH5A Powerful RAK-25QH8 (W), RAK-35QH8 (W), RAK- 50QH8(W) Newly developed super big flap delivers air quickly to every corner of the room, and the powerful, sweeping airflow eliminated dead zones and improves the cooling and heating effect. A new CutOut design outlook wall mounted indoor units is introduced which optimizes technology and just like its name suggests has a more stylish Cut Out panel design. The new Hitachi premium series deliver a high performance and revolutionary design with stylish white silver and beige chocolate. It is equipped with superb technology that blends well with any room interior of your choice. Quiet Operation The trapezoidal blades cut the air diagonally to minimize air resistance, and conical blade fan ensures a high airflow. The fan diameter has been increased from the conventional 90 mm to 100mm, so low noise yet higher airflow is produced with slow rotation Conventional blade fan New Conical blade fan RAK-18NH6A, RAK-25NH6A, RAK-35NH6A, RAK-50NH6A Efficient. Lambda-shaped heat exchanger with advanced design for wide suction area and a high performance adjusts the room temperature quickly, achieving COP. The flat panel design grill and larger top suction area also increase the efficiency of heat exchange with the concentrated opening area, to improve the efficiency of air intake.

6 1-6 SYSTEM DESCRIPTION Nano Stainless Pre-Filter (RAK-QH8) Washable Anti Bacteria Filter (RAK-65NH5A) Static electricity and carbon absorb micro dust, pollen particles and odors, and the air purifying filter can be washed and re-used up to 20 times. Odors Bacteria Conventional filter Before cleaning After cleaning Washable and Anti bacterial filter Tobacco House mites Dust Pollen Dirt still clings to the filter Nano Stainless Filter Before cleaning After cleaning Breathing structure. Microlevel dust is absorbed by static electricity Reusable after washing Wide Flow Anti-Bacterial Tangential Fan Dirt totally removed. Looking brand new. Washable Blue Nano Titanium Filter Nano Titanium, a nanoparticle antimicrobial agent. Titanium Oxide (TiO2) has been used as photocatalyst, and is a technology for deodorization and anti-bacterial measures, which has been recently put to practical use. The catalyst has been reduced to the nano level using Japanese original technology, to produce a no-light catalyst, thereby improving its effect. This cutting-edge Nano Titanium technology, which Hitachi is the first company to install for home appliances, works on the scale of the nanometer (1/1,000,000mm) to catch the tiniest bacteria and odor-causing molecules. Hitachi will optimize and apply this state-of-the-art technology to its main products. The conical blade fan with less air resistance and bigger tangential fan draws a larger volume of air flow to distribute the cool air evenly and quietly. It is also anti-bacterial treated to prevent bacterial and mold growth, ensuring only clean air is supplied for healthy living. Convenient and Dynamic Extended Air Flow (RAK-QH8) With dynamic extended airflow, the airflow could reach further to the corners of the room. Your room can be efficiently warmed or cooled with conveniently simple push of button on the remote control.

7 SYSTEM DESCRIPTION RAF - FLOOR TYPE RAF-25QH8 (B), RAF-35QH8 (B) & RAF-50QH8 (B) Higher performance A lambda shaped design provides a larger and wider area for heat echangef thus ensuring high performance. Current model Previous model RAF-25QH8 (W), RAF-35QH8 (W) & RAF-50QH8 (W) Convenient and Dynamic Extended Air Flow (RAF-QH8) With dynamic extended airflow, the airflow could reach further to the corners of the room. Your room can be efficiently warmed or cooled with conveniently simple push of button on the remote control. Floor type comes with new stylish design, high efficiency, noise-control performance and maintainability. The new Hitachi premium series deliver a high performance and revolutionary design with stylish white silver and beige chocolate. It is equipped with superb technology that blends well with any room interior of your choice. Comfortable cooling and heating Air Flow Control System (lower blowing type) During heating mode, the warm air is directed to stay well controlled at floor level. Whereas during the cooling mode, cool air is distributed to the whole room to prevent direct cold blast onto the person body.

8 1-8 SYSTEM DESCRIPTION Comparison at heating mode Side view [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top/ Top/ Top/ [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top view at 30cm height from floor level. [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top/ Top/ Top/ [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23]

9 SYSTEM DESCRIPTION 1-9 Comparison at cooling mode Side view [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] (Up Ward) (Up Ward) (Up Ward) Top view at 60cm height from floor level. [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] (Up ward) (Up ward) (Up ward)

10 1-10 SYSTEM DESCRIPTION Top view at 120cm height from floor level. [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] (Up Ward) [Average Room Temperature: at 29] (Up Ward) [Average Room Temperature: at 27] (Up Ward) Nano Titanium Filter (RAF-FX8) Nano Titanium, a nanoparticle antimicrobial agent. Titanium Oxide (TiO2) has been used as photocatalyst, and is a technology for deodorization and anti-bacterial measures, which has been recently put to practical use. The catalyst has been reduced to the nano level using Japanese original technology, to produce a no-light catalyst, thereby improving its effect. This cutting-edge Nano Titanium technology, which Hitachi is the first company to install for home appliances, works on the scale of the nanometer (1/1,000,000mm) to catch the tiniest bacteria and odor-causing molecules. Hitachi will optimize and apply this state-of-the-art technology to its main products.

11 SYSTEM DESCRIPTION 1-11 RAF-25NH5, RAF-35NH5, RAF-50NH5 Easy Cleaning You can remove pre-filter easily for washing or you can clean directly by vacuum cleaner. The filter catch 3 times more dust due to its wave shape, so you do not have to clean so often. Pre-filter can be removed easily Open A washable air purifying filter (option) can be installed Floor type comes with improved efficiency, noisecontrol performance and maintainability. In addition to the streamlined style or symmetric rounded design, the upper and lower air outlets enables air blow in two directions to reach every corner of the room for comfortable warmth. Comfortable heating New long life pre-filter The dust collecting area is almost three times larger than that of conventional one. The airflow from upper and lower outlets heats the whole room evenly, even underneath your feet. The wider flap envelope you with comfortable air Large and gentle air flow is generated b the larger upper blades, achieving efficient air-conditioning. High performance The larger blade fan than normal rotates sufficient airflow slowly, thus achieving high efficiency and low noise Current fan New fan

12 1-12 SYSTEM DESCRIPTION RAI - Four Way Cassette Type RAI-25NH5A, RAI-35NH5A, RAI-50NH5A One-touch panel The panel can be swung open up to 90 with just one push so that the filter can be removed for cleaning. Silent Noise level is just 25dB (Sleep mode) thanks to the 3D-twisted wing design of the compact turbo-fan.. Automatic Swing Louver Optionally, this unit is equipped with an automatic swing louver to ensure even distribution of conditioned air to the entire room. Grill can be removed for cleaning Built-in Drain Pump The air conditioner is equipped with an internal drain pump to remove accumulated condensend water from drain pan even while it is operating. A float switch monitors the water level and automatically activates the pump as necessary 4 -Way Airflow It can be selected among 2-way, 3-way or 4-way operation. 2-way 3-way 4-way Elegant Design The gently contoured standard air panel is less than 4 cm. It is tastefully designed to blend with any interior while delivering a maximum flow of air. The 32 cm profile of the hidden ceiling unit is low enough to allow unfettered installation in almost any building. Fits into a 600mm x 600mm ceiling module Thanks to compact design, it neatly fits inside a standard module and requires less installation work

13 SYSTEM DESCRIPTION RAD - DUCT TYPE RAD-18NH7A, RAD-25NH7A, RAD-35NH7A, RAD-50NH7A Removable Pre-filter and selectable air inlet Semi-duct type Quiet Operation The free duct enables the air inlet and outlet layout system to be freely chosen depending on the building structure and room width, thus keeping your room looking beautiful. Unlike conventional units, the noise level has been reduced to an exceptionally low 30dB-A (1.0HP unit, Low position). Ideal wherever quiet operation is important. Neatly installable in any room Duct length is extendable for up to 4m. High-pressure switch setting delivers sufficient air conditioning even by duct installation. Variation in installation Non-duct type Air inlet is selectable Pre-filter is removable Built-in drain pump This air conditioner is equipped with an internal drain pump to remove accumulated condensed water from the drain pan even while it is operating. A float switch monitors the water level and automatically activates the pump as necessary.

14 1-14 SYSTEM DESCRIPTION Static pressure & Air flow RAD-18NH7A / RAD-25NH7A RAD-35NH7A / RAD-50NH7A EXTERNAL STATIC PRESSURE ( Lo Me Hi COOLING :Static pressure Pressure OFF :Static pressure Pressure ON ON M3 EXTERNAL STATCI STATIC PRESSURE ( (Pa) Lo COOLING :Static pressure Pressure OFF :Static pressure Pressure ON Me Hi M3 0 M Air AIR volume VOLUME (m 3 /min) M Air AIR volume VOLUME (m (m 3 /min) 3 EXTERNAL EXTERNAL STATIC STATIC PRESSURE PRESSURE (Pa) ( Lo HEATING :Static pressure Pressure OFF OFF :Static pressure Pressure ON Me Hi M3 M M3:In In case the duct is is 4m long Air AIR volume VOLUME (m 3 /min) 3 /min) M0:For For single non indoor duct type unit EXTERNAL STATIC PRESSURE (Pa) ( Lo Lo HEATING :Static pressure Pressure OFF OFF :Static pressure Pressure ON ON Me Hi M3 M M3:In In case the duct is 4m long Air AIR volume VOLUME (m 3 3 /min) M0:For For single non indoor duct type unit

15 SYSTEM DESCRIPTION System Control Features CS-NET etc. H-LINK LINE Model Remote controller H-Link Adaptor Standard Optional (either one) Optional H-LINK ADAPTOR RAC H-LINK ADAPTOR RAC RAK-QH8 RAK-NH6A RAI-NH5A New wireless New wired Weekly timer Yes OR OR RAF-QH8 WEEKLY TIMER WIRED REMOCON WIRELESS REMOCON RAD-NH7A New wired *Not applicable for RAF-NH5 New wireless 4 fan speed control 4 fan speed control for flexible control of air flow. (High / Medium, Low / Sleep Low) with the new wireless and wired remote control. RAC#1 RAC#2 RAC#3 New Weekly Timer (optional) DISTRIBUTOR#1 RAC#4 Program can be set for one week Up to 5 different patterns can be set for each calendar day with each pattern having programmable starting time, ending time and temperature. Program can overlap to the next day Simultaneous setting mode Possible to choose weekly program or normal mode 4 fan tap: Auto/Hi/Me/Low/Silent WEEKLY TIMER RAC#1 RAC#2 RAC#3 RAC#6 RAC#6 H-link connection(optional) The optional H-link adaptor is available if connection of the RAC to the CS-NET via the H-link system is required RAC#5 RAC#4 RAC#9 RAC#7 RAC#8 RAC#5 RAC#6 RAC#6 Distributor (optional) The optional distributor is be used together with the Weekly Timer when there is a need to centralized the control of multiple indoor units using only a single Weekly Time remote control. A single distributor could be connected further to 3 separate distributors so that up to 13 units of indoor could be controlled by a single weekly timer. DISTRIBUTOR#2 DISTRIBUTOR#3 DISTRIBUTOR#4 DISTRIBUTOR#1 WEEKLY TIMER

16 1-16 SYSTEM DESCRIPTION 1.3 BENEFITS AND FEATURES OF SPLIT MODELS HITACHI prides itself on providing high quality, efficient and reliable air conditioning solutions across the globe. By investing in Research and Development, Hitachi has been able to remain at the forefront of the industry with most extensive range available in the market today. As would be expected of an organization such as ours, quality and efficiency of our products is imperative and has the utmost importance. Installers and users alike can rest assured that these are not the only parameters by which Hitachi products can be judged. Ecological thinking stems from the very first stages of new product design and continues throughout production and onto installation procedures, equipment and operation, with priority being given to the use of environmentally friendly refrigerants such as R410A. Hitachi offers an extensive range of Room Air Conditioning Units suitable for domestic and light commercial applications SUMMIT RANGE All PAM Inverter (RAC-50/60/70/80YH5A and RAC-50WX8) 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. Temperature Compressor (RPM) Non Inverter Rapid start up The variable Inverter speed compressor (inverter) enables the system to rapidly reach the desired Non Inverter room temperuature setting. Once the desired Inverter room themperature has been achieved, the compressor Time 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 HITACHI 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 Superior Performance DC Inverter Motor 10% Gain Motor Efficiency (%) AC Inverter Motor Auto-Restart If auto-restart mode was selected at the ON/OFF switch, the unit automatically resumes operation in the mode that was in use beforehand: Motor RPM 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 SUMMIT for your comfort and energy saving for our environment. * When timer is set, Auto Restart feature to previous mode is not available 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 every 10 minutes by a sensor.

17 SYSTEM DESCRIPTION Wall Type RAS-25WX8(W) or (B), RAS-35WX8(W) or (B), RAS-50WX8(W) or (B) Powerful Newly developed super big flap delivers air quickly to every corner of the room, and the powerful, sweeping airflow eliminated dead zones and improves the cooling and heating effect. A new CutOut design outlook wall mounted indoor units is introduced which optimizes technology and just like its name suggests has a more stylish Cut Out panel design. The new Hitachi premium series deliver a high performance and revolutionary design with stylish white silver and beige chocolate. It is equipped with superb technology that blends well with any room interior of your choice. RAS-18FH6, RAS-25FH6, RAS-35FH6, RAS- 50FH6 RAS-60YH5A Quiet Operation The trapezoidal blades cut the air diagonally to minimize air resistance, and conical blade fan ensures a high airflow. The fan diameter has been increased from the conventional 90 mm to 100mm, so low noise yet higher airflow is produced with slow rotation Efficient. Conventional blade fan New Conical blade fan Lambda-shaped heat exchanger with advanced design for wide suction area and a high performance adjusts the room temperature quickly, achieving COP. The flat panel design grill and larger top suction area also increase the efficiency of heat exchange with the concentrated opening area, to improve the efficiency of air intake. RAS-70YH5A, RAS-80YH5A Digital DC scroll compressor (RAC-WX8,RAC- FX8, RAC-25/35YH5) The motor uses digital control to maximize PAM control performance Loss during high-speed revolution is reduced, thanks to digital control of the motor. Three balancers mounted on the crankshaft lessen shaft run out during high-speed revolution. Efficient operation with drastically reduced refrigerant leakage is ensured by the automatic compression system, in which that tip of the slewing scroll is kept in absolute contact with the fixed scroll, in addition to special processing of the scroll surface.

18 1-18 SYSTEM DESCRIPTION Nano Stainless Filter Before cleaning After cleaning Dirt totally removed. Looking brand new. Twin rotary compressor (for RAC- 18/25/35/50YH6, RAC-60/70/80YH5) Hitachi s new twin rotary compressor has less vibration and higher efficiency than conventional 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 Comparison of Vibration Washable Blue Nano Titanium Filter (RAS- WX8) Nano Titanium, a nanoparticle antimicrobial agent. Titanium Oxide (TiO2) has been used as photocatalyst, and is a technology for deodorization and anti-bacterial measures, which has been recently put to practical use. The catalyst has been reduced to the nano level using Japanese original technology, to produce a no-light catalyst, thereby improving its effect. This cutting-edge Nano Titanium technology, which Hitachi is the first company to install for home appliances, works on the scale of the nanometer (1/1,000,000mm) to catch the tiniest bacteria and odor-causing molecules. Hitachi will optimize and apply this state-of-the-art technology to its main products. Conventional Single Rotary New Twin Rotary Nano Stainless Pre-Filter (RAS-WX8) Odors Bacteria Conventional filter Before cleaning After cleaning Washable Anti Bacterial Filter (RAS-FH5,FH6 and YH5A Static electricity and carbon absorb micro dust, pollen particles and odors, and the air purifying filter can be washed and re-used up to 20 times. Dirt still clings to the filter Washable and Anti bacterial filter

19 SYSTEM DESCRIPTION 1-19 Tobacco House mites Dust Pollen Breathing structure. Microlevel dust is absorbed by static electricity Reusable after washing Wide Flow Anti-Bacterial Tangential Fan The conical blade fan with less air resistance and bigger tangential fan draws a larger volume of air flow to distribute the cool air evenly and quietly. It is also anti-bacterial treated to prevent bacterial and mold growth, ensuring only clean air is supplied for healthy living. Plasma Air Cleanliness [RAS-25WX8, RAS- 35WX8, RAS-50WX8] Equipped with a plasma ion unit to capture the finest and microscopic dust and eliminate bacteria. Convenient and Dynamic Extended Air Flow [RAS-25WX8, RAS-35WX8, RAS-50WX8] With dynamic extended airflow, the airflow could reach further to the corners of the room. Your room can be efficiently warmed or cooled with conveniently simple push of button on the remote control. Self Cleaning Function [RAS-25WX8, RAS- 35WX8, RAS-50WX8] The unit will activate DRY function for 30 minutes to protect the indoor exchanger from mold and bad odour.

20 1-20 SYSTEM DESCRIPTION Floor Type RAF-25FX8(B), RAF-35FX8(B), RAF-50FX8(B) Conventional filter Before cleaning After cleaning Dirt still clings to the filter Nano Stainless Filter Before cleaning After cleaning RAF-25FX8(W), RAF-35FX8(W), RAF-50FX8(W) Dirt totally removed. Looking brand new. Floor type comes with new stylish design, high efficiency, noise-control performance and low maintainability. The new Hitachi premium series deliver a high performance and revolutionary design with stylish white silver and beige chocolate. It is equipped with superb technology that blends well with any room interior of your choice. Nano Titanium Filter (RAF-FX8) Nano Titanium, a nanoparticle antimicrobial agent. Titanium Oxide (TiO2) has been used as photocatalyst, and is a technology for deodorization and anti-bacterial measures, which has been recently put to practical use. The catalyst has been reduced to the nano level using Japanese original technology, to produce a no-light catalyst, thereby improving its effect. This cutting-edge Nano Titanium technology, which Hitachi is the first company to install for home appliances, works on the scale of the nanometer (1/1,000,000mm) to catch the tiniest bacteria and odor-causing molecules. Hitachi will optimize and apply this state-of-the-art technology to its main products. Nano Stainless Pre-Filter (RAF-FX8 ) Odors Bacteria

21 SYSTEM DESCRIPTION 1-21 Higher performance A lambda shaped design provides a larger and wider area for heat echangef thus ensuring high performance. Current model Previous model Comfortable coolng and heating Air Flow Control System (lower blowing type) During heating mode, the warm air is directed to stay well controlled at floor level. Whereas during the cooling mode, cool air is distributed to the whole room to prevent direct cold blast onto the person body.

22 1-22 SYSTEM DESCRIPTION Comparison at heating mode Side view [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top/ Top/ Top/ [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top view at 30cm height from floor level. [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23] Top/ Top/ Top/ [Average Room Temperature: at 18] [Average Room Temperature: at 20] [Average Room Temperature: at 23]

23 SYSTEM DESCRIPTION 1-23 Comparison at cooling mode Side view [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] (Up Ward) (Up Ward) (Up Ward) Top view at 60cm height from floor level. [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] (Up ward) (Up ward) (Up ward)

24 1-24 SYSTEM DESCRIPTION Top view at 120cm height from floor level. [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] [Average Room Temperature: at 29] [Average Room Temperature: at 27] [Average Room Temperature: at 30] (Up Ward) [Average Room Temperature: at 29] (Up Ward) [Average Room Temperature: at 27] (Up Ward) Convenient and Dynamic Extended Air Flow [RAF-25FX8(W) or (B), RAF-35FX8(W) or (B), RAF-50FX8(W) or (B)] With dynamic extended airflow, the airflow could reach further to the corners of the room. Your room can be efficiently warmed or cooled with conveniently simple push of button on the remote control. Digital DC scroll compressor (for RAC-FX8) The motor uses digital control to maximize PAM control performance Loss during high-speed revolution is reduced, thanks to digital control of the motor. Three balancers mounted on the crankshaft lessen shaft run out during high-speed revolution. Efficient operation with drastically reduced refrigerant leakage is ensured by the automatic compression system, in which that tip of the slewing scroll is kept in absolute contact with the fixed scroll, in addition to special processing of the scroll surface.

25 SYSTEM DESCRIPTION Duct Type Middle Static Pressure RAD-50DH7A, RAD-60DH7A, RAD-70DH7A Quiet Operation The free duct enables the air inlet and outlet layout system to be freely chosen depending on the building structure and room width, thus keeping your room looking beautiful. Neatly installable in any room High-pressure switch setting delivers sufficient air conditioning even by duct installation. Variation in installation Removable Pre-filter and selectable air inletsemi-duct type Static pressure & Air flow EXTERNAL STATIC PRESSURE (Pa) RAD-50DH7A / RAD-60DH7A Normal Mode High Static Pressure Mode Low Static Pressure Mode Non-duct type AIR VOLUME (m 3 /min) Air inlet is selectable Pre-filter is removable EXTERNAL STATIC PRESSURE (Pa) RAD-70DH7A Normal Mode High Static Pressure Mode Low Static Pressure Mode AIR VOLUME (m 3 /min)

26 1-26 SYSTEM DESCRIPTION Built-in drain pump This air conditioner is equipped with an internal drain pump to remove accumulated condensed water from the drain pan even while it is operating. A float switch monitors the water level and automatically activates the pump as necessary. Twin rotary compressor (for RAC- 50/60/70DH7) Hitachi s new twin rotary compressor has less vibration and higher efficiency than conventional 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 Comparison of Vibration Conventional Single Rotary New Twin Rotary

27 SYSTEM DESCRIPTION System Control Features CS-NET etc. H-LINK LINE Model Remote controller H-Link Adaptor Standard Optional (either one) Optional H-LINK ADAPTOR RAC H-LINK ADAPTOR RAC RAS-WX8 RAS-YH5A RAS-FH6 New wireless New wired Weekly timer Yes OR OR RAF-FX8 WEEKLY TIMER WIRED REMOCON WIRELESS REMOCON RAD-DH7A New wired *non applicable to RAS-FH5 New wireless 4 fan speed control 4 fan speed control for flexible control of air flow. (High / Medium, Low / Sleep Low) with the new wireless and wired remote control. New Weekly Timer (optional) RAC#1 RAC#2 RAC#3 DISTRIBUTOR#1 RAC#4 Program can be set for one week Up to 5 different patterns can be set for each calendar day with each pattern having programmable starting time, ending time and temperature. Program can overlap to the next day Simultaneous setting mode Possible to choose weekly program or normal mode 4 fan tap: Auto/Hi/Me/Low/Silent H-link connection(optional) The optional H-link adaptor is available if connection of the RAC to the CS-NET via the H-link system is required Distributor (optional) The optional distributor is be used together with the Weekly Timer when there is a need to centralized the control of multiple indoor units using only a single Weekly Time remote control. A single distributor could be connected further to 3 separate distributors so that up to 13 units of indoor could be controlled by a single weekly timer. WEEKLY TIMER RAC#1 RAC#2 RAC#6 RAC#10 RAC#3 RAC#7 RAC#11 RAC#4 RAC#8 RAC#12 RAC#5 RAC#9 RAC#13 DISTRIBUTOR#2 DISTRIBUTOR#3 DISTRIBUTOR#4 DISTRIBUTOR#1 WEEKLY TIMER

28 1-28 SYSTEM DESCRIPTION BIGFLOW RANGE Rotary compressor Hitachi s new rotary compressor has less vibration and higher efficiency than conventional rotary compressors. The Hitachi single split system offers a cost effective and efficient solution to climate control in one zone. Auto-Restart If auto-restart mode was selected at the ON/OFF switch, the unit automatically resumes operation in the mode that was in use beforehand. * When timer is set, Auto Restart feature to previous mode is not available Efficient Lambda-shaped heat exchanger with advanced design for wide suction area and a high performance adjusts the room temperature quickly, achieving COP. The gradation-design grill and larger top suction area also increase the efficiency of heat exchange with the concentrated opening area, to improve the efficiency of air intake. Lambda-shaped heat exchanger with advanced design for wide suction area and a high performance adjusts the room temperature quickly, achieving COP. The flat panel design grill and larger top suction area also increase the efficiency of heat exchange with the concentrated opening area, to improve the efficiency of air intake. Powerful Newly developed super big flap delivers air quickly to every corner of the room, and the powerful, sweeping airflow eliminated dead zones and improves the cooling and heating effect. Clean Static electricity and carbon absorb micro dust, pollen particles and odors, and the air purifying filter can be washed and re-used up to 20 times. G4, GH4 series use of the HFC new R410A Refrigerant HITACHI developed and introduced all models to meet the global needs to help protect the Earth s environment by using non-ozone depleting refrigerant, R410A as Hitachi s standard series. Tobacco Washable and Anti bacterial filter House mites Dust Pollen Breathing structure. Microlevel dust is absorbed by static electricity Reusable after washing