VRF Systems

SET FREE mini VRF

Air … To us it is something that is taken too much for granted.

Spaces in our cities are under increasing pressure. Urban areas demand landscape preservation, and also require space efficiency. SET FREE mini outdoor units have a simple yet stylish design that does not mar the urban appearance.

At the same time, since a powerful and compact unit runs multiple indoor units, it meets urban needs and the expectations of users who are concerned about the appearance of their surroundings.

So much so, that we can even forget it exists. Nevertheless, air is so essential that we could not go on living without it. We believe that the ability to control the air indoors to our own liking, no matter what the environment outdoors, is a truly wonderful thing. We want to create pleasant spaces of Living Harmony everywhere, for people all over the world.

With this thought in mind, we shall continue to produce technology that assures people can lead lives of comfort, safety and security.

Air … To us it is something that is taken too much for granted.

Spaces in our cities are under increasing pressure. Urban areas demand landscape preservation, and also require space efficiency. SET FREE mini outdoor units have a simple yet stylish design that does not mar the urban appearance.

At the same time, since a powerful and compact unit runs multiple indoor units, it meets urban needs and the expectations of users who are concerned about the appearance of their surroundings.

So much so, that we can even forget it exists. Nevertheless, air is so essential that we could not go on living without it. We believe that the ability to control the air indoors to our own liking, no matter what the environment outdoors, is a truly wonderful thing. We want to create pleasant spaces of Living Harmony everywhere, for people all over the world.

With this thought in mind, we shall continue to produce technology that assures people can lead lives of comfort, safety and security.

Flexibility in Three Sizes of Outdoor Units

Owing to three types of outdoor unit with enhanced design and performance, we intelligently meet the requirements of various buildings as regards scale and construction, as well as air-conditioning needs. We believe that the paths to comfortable living all begin with Hitachi outdoor units.

Gentle Cool Control

Choose the best unit for up to 12 independent spaces by combining any mix of indoor units including wall mounted, ducted or cassette, centrally or individually controlled.

Set your comfortable temperature not only for “Room” but also for “Air” in cooling operation. To make your room reach the desired temperature faster, the discharge air from the indoor unit can be sometimes much cooler, causing discomfort at the beginning of operation. Now you can choose "discharge air temperature = your own comfort level", as you like, by our advanced wired remote controller PC-ARF1. You can be in comfort and avoid the cold dradt from the moment cooling operation starts, while the room gently cools down.

Outdoor Units

Because of the large-capacity outdoor unit, it is possible to install a whole range of indoor units in various rooms using one outdoor unit. The largest outdoor unit is an amazing 33.5kW nominal cooling capacity.

Leading Operating Range

Special fresh air intake and trapezoid heat sink design are adopted for the inverter driver. This improves heat emission and allows the system to be running stably under high ambient conditions. Up to 52.0°C ambient for cooling operation. Special 3-row coil design (3/3.5/6/6.5/10/11/12HP class) and larger area of coil enhance heating capability. This enables heating as low as -20.0°C ambient condition even in
cold regions.

Outdoor Unit Static

High external static pressure up to 30Pa is available in order to avoid air short-circuit conditions. This ensures that the outdoor unit runs with a good ventilating condition under different conditions of installation. Our SET FREE mini outdoor units are designed to be located internally by the straightness of air flow thanks to higher external static pressure with DC inverter fan, leading to more options for installation and visual aesthetics of buildings.

Connection Access

Any local requirements and constraints can be met with a number of features in the outdoor unit. Stop valve built with 4-directional outlet piping for easier pipe installation. The refrigerant pipes can connect the stop valves from the front and right, rear and bottom of the unit.

Piping Flexibility

Longer and more flexible piping has been realised. This helps in dealing with various piping restrictions.
Please refer to the technical documents for details.

Small Footprint

Since the HNRQ Series adopts a more compact outdoor unit compared with the top-blowing type large capacity outdoor unit, it offers an increased degree of freedom of installation. Balance is the key to harmony, so SET FREE mini outdoor units incorporates advanced features to ensure a more peaceful environment with less disturbance to the outside environment

Control Systems

From homes to large scale buildings such as hotels, educational facilities, or hospitals, our central controller range will fit any project. The larger EX controller for example offers features a highly intuitive and functional 12.1-inch wide, wallmountable, colourful LCD screen. Control up to 2,560 indoor units with our proprietary H-LINK system with 15 Extension Adapters

documentation

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Manuals, brochures and other product literature. If you need any more information, please get in touch.

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