Set-Free FSNM (Compact Type VRF)

SET-FREE FSNM Advantages

Provided in a compact body, but allows installation conditions comparable with those of a high-performance multi-split air conditioning system.

The compact, light body facilitates delivery and installation.

The adoption of a slim body improves flexibility in mounting, enabling installation in a small space or a formerly dead space.

Specification Comparison

Hitachi continues to propose unique product lines in order to meet demands for various types of air conditioning systems. The SET-FREE FSNM series is multi-split air conditioning system with a front-flow type fan, which combines the compactness and lightness of the UTOPIA series and the VRF function of the SET-FREE series (as of October 2008).

Comparison of HITACHI 10 HP class models

Comparison of HITACHI 10 HP class models
Series	UTOPIA IVX DC Inverter	SET-FREE FSNM	SET-FREE FS Series
Series	UTOPIA IVX DC Inverter	SET-FREE FSNM	Hitachi's multi-split system released 15 year ago	Hitachi's latest multi-split system
Type	Front-Flow Type	Front-Flow Type	Top-Flow Type	Top-Flow Type (FSN2 Series)
Refrigerant Charge	7.8kg	5.5kg	17.5kg	10.5kg
Floor Area	0.429m2	0.429m2	1.225m2	0.896m2
Net Weight	170kg	170kg	345kg	275kg
Actual Maximum Piping Length (Equivalent length)	100m (120m)	100m (120m)	100m(125m)	165m (190m)
Total Piping Length	145m	250m	362m	1,000m
Height Difference Between Indoor and Outdoor Units (Lowest outdoor unit)	30m (20m)	40m (30m)	50m (40m)	50m (40m)
Max. Number of Connectable Indoor Units	4units	10units	8units	16units
*Capacity Ratio of Connected Indoor Unit 1**	100%	50～130％ (8 and 10HP) 50～110％ (12HP) *2	50～130％	50～130％
Min. Capacity of Connectable Indoor Units	2HP	0.8HP	1HP	0.8HP

*1: Figures indecate the capacity ratio of connected indoor units to that of an outdoor unit (total capacity of indoor units/capacity of outdoor unit).
*2: In a system where all the indoor units are often operated simultaneously, it is suggested that unit settings be kept within 100％ the capacity of the outdoor unit.
In a system where all the indoor units are not expected to operate sumultaneously, the total capacity of the indoor units canbe set up to either 103％ (8 and 10HP) or 110％ (12HP) of the capacity of the outdoor unit. Be sure to keep settings within 100％ the capacity of the outdoor unit in cold regions (where outdoor temperature falls below -10℃) and in other places with a heavy heating load.

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Easy Installation

The compact design greatly improves flexibility in installation

Top-class Compact and Light Weight Design

Facilitation and flexibility at installation are further advanced by adopting outdoor unit's lightweight and compact design compared to the current top-flow model.

With a width of only 390 mm, the SET-FREE FSNM can be installed on a staircase landing or balcony on each floor.

The front-flow type system allows installation under the eaves.

Greater Convenience during delivery and installation

With its light and compact body, the SET-FREE FSNM can be easily carried in the elevator even in a small urban site.
No cranes required for delivery
The unit can be carried at one time. Elevators can be used for delivery.

The piping can be designed and constructed up to a total piping length of 250m

The piping can be designed and constructed up to a maximum piping length of 100m. (total piping length: 250m)

Piping length: 100m
(Equivalent length: 120m)
Max. length after first branch: 40m
Max. length after branch: 15m
Height difference between indoorunits: 15m
Height difference
Highest outdoor unit: 40m
Lowest outdoor unit: 30m

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Advanded Technology

Compact body crammed with advanced technology

New Type DC Inverter Scroll Compressor

Improved Intermediate Pressure Performance
The intermediate pressure performance is drastically improved by adopting release valve and optimizing orbiting scroll lifting force at the improved new compressing mechanism, therefore intermediate pressure performance is widely improved for energy saving.
Release Valve Adoption Prevents from Overcompression.
Orbiting Scroll Lifting Force Optimization is improved Leakage Loss Reduction.

Technology to Improve Heat Exchanger Performance
In the front-flow model, wind speed distribution is rendered uniform by making the direction of the wind flow to the fan and the heat exchanger the same. As a result, the performance of the heat exchanger is optimized and energy is saved.

Low Noise Technologies
The industry-leading low noise outdoor unit is realized by adopting the new model fin with low pressure loss.

DC Fan Motor

The smooth rotating fan motor with low vibration reduces the noise generation.

Super High-stream Fan

Super High-stream fan of Φ544 mm cuts down the noise.

Low Pressure Loss Air Outlet Grille

New Fin with Less Pressure Loss

The draft resistence is reduced by 20％. Both high-efficiency and low noise operation are simultaneously satisfied.

Compact, but unrivalled by any other multi-split air conditioning system for buildings

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.