Hitachi

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May　2008
HITACHI APPLIANCES, INC.
R410A SET-FREE FSN1 Series
・ Energy Saving Operation
 (High COP)
・Less Refrigerant Charge
・ Wide Range of Outdoor Units
・ Various types of Indoor Units
・ Space Saving Cabinet
・ Maximum Piping Length
・ Connectable Indoor Units 
 Unit Quantities
・ Demand Control
・ Centralized Control
・ Individual Operation
・ Wide Operation Range
R410A SET-FREE FSN Series
Concept
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
Social Needs
Contractor
Building Owner
End User
1-1 Energy Saving Operation (Feature)
●R410A Refrigerant
●Energy Saving Refrigerant 
 Cycle, Control
COP (8HP)
Cooling = 3.72, Heating = 4.36 
High Efficiency
DC Fan 
Controller
DC Fan Motor
DC Inverter 
(ISPM)
High Efficiency
DC Compressor
High Efficiency
Constant Compressor
Super-cooling
Circuit
Energy Saving
Heat Exchanger
New Developed 
2-Blade Fan
Many Energy 
Saving Technology
Adopted
heating
cooling
R407C FSG
R410A FSN
TEWI=A×GWP＋B
A：Coefficient for
 Refrigerant Release
B：CO2 generated
 in Operation
R410A
R407C
R22
ODP
0
0
0.055
GWP
2000
1700
1700
1-2 Energy Saving Operation (TEWI)
Asymmetric Scroll
Oil Return
 Pipe
Sub-Bearing
Structure
1-3 Energy Saving Operation (Increase Reliability)
New Type Compressor
 
★High Performance
 ・Decrease of Intake Loss
 ・Decrease of Leak Loss
 ・Decrease of Superheat Loss
★High Reliability
・Decrease of
 Bearing Load
・Minimizing of
 Shaft Swing
New! R410A Scroll Compressor
SHUT OUT
SHUT OUT
NEW
Sub-Bearing
NEW
Oil Returning Pipe
NEW
Asymmetric Scroll Lap
●Compressing Efficiency increase 5％
(Middle Speed, compared with HITACHI current)
●Flat Characteristics
New! R410A Scroll Compressor
20
40
60
80
100
Speed (Hz)
New R410A-INV(DC-INV)
Current R407C-INV(DC-INV)
Compressing Efficiency
1-4 Energy Saving Operation (R410A Cycle Technology)
Effect of Sub-cooler
Effect of Super-cooling
Circuit
Sub-cooler
Air
Air
Front Side
Rear Side
Decrease of pressure loss 
in pipe
Optimal expansion 
control
for heating operation
Optimizing of 
heat exchanger
　･2 gas-1 liquid path
 arrangement
　･Sub-cooler 
 at Air Inlet Side
Super-cooling Circuit
Decrease of pressure loss 
in pipe and evaporator
by minimizing refrigerant 
flow rate
1-5 Energy Saving Operation (Reduce Noise)
 Inverness Fan
2 Blade Fan is the first in the industry
・Reduce noise by 2dB
・Increase flow rate 25％ more
・Reduce Motor Input by 8％
 ①Sound Noise Resource Decrease from 4 to 2
New
(Inverness fan)
Current
Noise Resource
Reduce
‘Buzz’ Sound
Reduce Noise Resource 
Noise Resource
(a)Increase of Static 
Pressure by 
Outlet Shape
・Slow Pressure Increase
　→Suppress Disturbance on
 Surface
・Reliable Pressure Increase
Current
New
Pressure is increased 
Slowly and certainly.
②Minimizing of Pressure Gradient
by Long Blade
(c)Low Noise by 
Surrounding Fan
(b)Suppressing Air Leak
New Developed Fan
Long
Bell-mouth
Smooth Air Flow
③High Efficiency by 
Long Bell-mouth 
(68% Up)
Effect of Long Bell-mouth
60Pa External
 Static Pressure
ISPM
 Reduce heat loss
 Decrease 39% in Square (245cm2→150cm2)
109mm
DC Fan Module
1-6 Energy Saving Operation (Control)
< Current >
177mm
< New >
40mm
80mm
125mm
137mm
DM
IPM
ISPM
Inverter PCB
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
2 Series Line Up
RAS-5 to 16FSN
New compact cabinet
For 16,24,30HP
Appearance
Line Up
RAS-18 to 32FSN
RAS-34 to 42FSN
2 Series Line Up
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
3-1 Improvementof Installation Work
6
●Most Compact Size：Realized by Inverness Fan
RAS-16FSG
３７％
１５％
RAS-16FSN1
Cut
Square
Cut
Square
RAS-30FSG
RAS-30FSN
2,870
2,430
1,210
1,910
4-1 Comparison of Installation Space
Sheet5 (3)
		Capacity		5		6		8		10		12		13		14		16		18		20		22		24		26		28		30		32		34		36		38		40		42
		HITACHI
Current
				630				950						1270				1910								2870										3840
		HITACHI
New																																		('04/09)
				630				950								1210				1910						2430										3390
		D- Company										Same as 14,16HP
				635				930				1240								1880						2190				2500						3140				3450
4-2 Comparison of Installation Space
Sheet5 (3)
		Capacity		24		26		28		30		32		34		36		38		40		42
		HITACHI
Current
				2870										3840
		HITACHI
New
				2430										3390
		D- Company
				2190				2500						3140				3450
		HITACHI
Current
				2870										3840
4-3 Comparison of Installation Space
New
D-Company
Current
Installation
Space
63%
66%
100%
Installation
Space
85%
89%
100%
Capacity
16HP
30HP
1240
1910
1210
2870
2430
2500
Pipes and wiring *
are needed among
outdoor units !
Integrated cabinet
enables to install easily !
*Gas Pipe,Liquid Pipe,Oil Return Pipe
 Power,Earth,Communication Wiring
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
●　Maximum Piping Length 150m(Equivalent 175m)
5 Improvement of Piping
Height Difference
between Outdoor
Unit and Indoor
Unit　50m
※２
Maximum Piping
Length 150ｍ
*1
From the first branch
to farthest
 indoor Unit
40m
Height
Difference
among
Indoor Unit
15m
*1 In the case that piping length is longer than 100ｍ, piping
size should be larger (1 rank).
*2 In the case that outdoor unit is lower than Indoor units,
height difference should be 40m or less.
Total Piping Length
=300mn
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
6 Down-sizing refrigerant pipe
	 New development allows unit to operate at less pressure loss and discharge volume is smaller for the same capacity compared with R407C.
	 Installation is easier and piping costs are reduced
Example 10HP System
Outdoor unit 10HP, Indoor Unit 2.5HP×4
Main Pipe 70m, Branch Pipe 30m
70m
30m
6.1 Reduce additional Refrigerant Charge
Total
φ12.7
φ9.53
Pipe Size
16.2kg（100）
13.3kg（82）
0.120×70
＝8.4kg
－
0.065×30×4
=7.8kg
0.070×
(70+30×4)
=13.3kg
Current
New
FSN1 series
*10HP inverter Comp is used for 8HP-20HP
 instead of 5HP(FSN).
*This achieves higher COP and Light weight.
*Simplifies the maintenance.
	HP	FSN	FSN1
	5.0	E405AHD
	8.0	E405AHD+E505DH	E655DHD
	10.0	E405AHD+E605DH	E655DHD
	12.0	E405AHD+E655DH	E655DHD
	14.0	E405AHD+E505DH x2	E655DHD+E655DH
	16.0	E405AHD+E605DH x2	E655DHD+E655DH
	18.0	E405AHD+E605DH x2	E655DHD+E855DH
	20.0	E405AHD+E605DH x3	E655DHD+E855DH
	22.0	E405AHD+E605DH x3	E405AHD+E655DH x3
	24.0	E405AHD+E605DH x4	E405AHD+E605DH x4
	26.0	E405AHD+E655DH x4	E405AHD+E655DH x4
	28.0	E405AHD+E605DH x5	E405AHD+E605DH x5
	30.0	E405AHD+E655DH x5	E405AHD+E655DH x5
	32.0	E405AHD+E655DH x5	E405AHD+E655DH x5
	34.0	E655DHD+E855DH x4
	36.0	E655DHD+E855DH x4
	38.0	E655DHD+E855DH x4
	40.0	E655DHD+E855DH x5
	42.0	E655DHD+E855DH x5
	High　Efficiency
	　	Current	New
	HP	FSN	FSN1
	　	EER	COP	EER	COP
	8	3.16	4.17	3.72	4.36
	10	3.27	3.72	3.54	4.07
	12	3.16	3.78	3.39	3.71
	14	2.88	3.75	3.22	3.97
	16	2.92	3.97	3.10	3.99
	18	3.43	3.84	3.50	3.91
	20	3.26	3.80	3.14	3.70
	22	2.92	3.64	3.06	3.65
	24	3.15	3.88	3.25	3.92
	26	3.04	3.70	3.04	3.94
	28	2.93	3.85	3.03	3.87
	30	2.78	3.70	3.02	3.81
	32	2.64	3.75	3.01	3.85
	Light Weight 　
	　	Current	New
	HP	FSN	FSN1
	8	260	215
	10	270	225
	12	270	225
	14	370	335
	16	370	335
	18	490	460
	20	535	460
	22	535	535
	24	675	675
	26	675	675
	28	720	720
	30	720	720
	32	720	720
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
●Improvement of Minimum Capacity and Maximum Quantity
7 Connectable Indoor Unit
*( ) Max. number of min. capacity indoor units connectable.
Initial Cost Saving
Initial Cost Saving
Running Cost Saving
Easy Installation
Environmental
Conservation
User Friendly
Comfort
Easy Maintenance
R410A SET-FREE FSN Series
Concept
 Energy Saving Operation
 (High COP)
 Less Refrigerant Charge
 Wide Range of Outdoor Units
 Various types of Indoor Units
 Space Saving Cabinet
 Maximum Piping Length
 Connectable Indoor Units 
 Unit Quantities
 Demand Control
 Centralized Control
 Individual Operation
 Wide Operation Range
Social Needs
Contractor
Building Owner
End User
8 Demand control function
Demand control improves energy saving by limiting current required for compressor. It can be selected according to demand required by customer.
8 Improvement of Freedom for Installation Design
Line Up for Demand Control：3 Types of Demand Control Supplied for Customer
Current
New
－
●Cut by Time Control
●Minimizing Capacity Down
③Wave
Function
－
●Power Cut According to
 Site Conditions
②Cut by
Internal Signal
①Cut by
External Signal
●Construction Needed 
 in Advance
①Cut by
External Signal
Time
Cut
External Signal
Time
Cut
Cut
Power
Power
Time
Power
THANK YOU
●Improvement of Minimum Capacity and Maximum Quantity
7 Connectable Indoor Unit
Connectable Capacity Rate:50～130%
( )…Quantity of 0.8HP Units
Capacity56810
12
131416182022
HITACHI
Current
630950 1270 1910
HITACHI
New
630950 12101910
NewCurrent
Connectable
Minimum
Capacity
Maximum
Quantity
Connectable
Minimum
Capacity
Maximum
Quantity
50.88(8)0.88(8)
80.813(13)0.813(13)
100.816(16)0.816(16)
160.820(20)0.816(16)
200.820(20)0.816(16)
240.827(12)1.027(12)
300.832(12)1.032(12)
Outdoor
Unit
Capacity
Capacity24262830323436384042
HITACHI
Current
28703840
HITACHI
New
24303390