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Hitachi Appliances, Inc.

Hitachi

Set-Free FSN （Standard Type VRF)

SET-FREE FSN Advantages Energy Saving Thanks to Hitachi's unique energy-saving technology such as the high-efficiency DC inverter compressor, industry-leading COP has been achieved. Easy lnstallation All-in-one compact design for all models of outdoor units. Simplifies the installation and increases the flexibility of location. Wide Product Range 6 types and 19 mod els of outdoor units 7 types and 39 models of indoor units Comfort Fine temperature setting and noise reduction technology for comfortable air conditioning, Reliability Hitachi's long scroll compressor experience ensures greater reliability.

Energy Saving

High-efficiency DC inverter compressor

Comfortable, energy-efficient operation thanks to DC inverter motor and new drive mechanism. Weight is 50% less than conventional compressors, thus reducing the weight of outdoor units.

Capacity Control by 1 Hz, The Only One in the Industry

Performance is greatly improved by the high-By vector-controlling the high efficiency DC inverter compressor and 100% load compressor, energy-saving operation without loss is achieved (depending on building load).

Use oｆ Supercooling Circuit

By using a supercooling circuit for the refrigeration cycle and optimizing the piping system, the performance is greatly improved.

Self-demand Control

A newly developed self-demand function has largely improved energy-saving effects. Since the current is self-detected and demand control performed automatically, no signal wiring work is required. Conventional demand control using demand signals is also available, and you can select various operations as required.

Wave Mode

Wave mode equipped to turn demand control ON and OFF alternately at intervals of about 20 min. or 10 min.While power is saved without fail, temperature changes are also minimized to maintain a comfortable room temperature.

Easy Installation

Compact Design

Easier Piping Work

By employing the integral-type unit for all product series, piping and wiring are easier, thus reducing construction time and raising maintenance reliability.

More Flexible Piping Length

  1. Max.pipe length:150m *1
  2. Between first branch and indoor unit:40m or less
  3. Height diference between highest and lowest indoor unit:15m or less
  4. Height diference between outdoor and indoor units:50m *2
*1
For 100m or more, the pipe diameter will be one size larger.
*2
In case the outdoor unit is installed at a higher level than indoor units. If the outdoor unit is installed lower than indoor units, the maximum height difference is 40m.

Comfort

Precise Temperature Setting

By properly controlling the refrigerant quantity by an electronic expansion valve, the temperature can be finely set.

2-Blade Fan Technology

  • Industry-first, 2-Blade Inverness Fan
    Noise is suppressed by decreasing the number of blades from 4 to 2.Although the number of blades is decreased, each blade is longer, thus the air quantity is increased by 25%.
  • High Static Pressure, Long Duct Bell-mouth
    Fan power consumption reduced by combining with inverness fan.

Smart Balance Control

The performance is the same regardless of the length of the refrigerant pipe. Quickly senses air temperature difference to demonstrate proper performance.Energy-saving operation without loss realized.

Wide Working Range

Wide Product Range

SET- FREE FSN can handle a wide range of outside air conditions,thus extending the flexibility of installation space and climatic environment.

Wide Product Range
Refrigirant Horse Power ［HP］
5
8
10
12
14
16
18
20
22
24
R410A
Wide Product Range
Refrigirant Horse Power ［HP］
26
28
30
32
34
36
38
40
42
R410A

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