UTOPIA DC INVERTER RASC SERIES RASC-H(V)RNE
Technical Catalogue RASC-(3/5)HVRNE RASC-10HRNE
Specifications in this manual are subject to change without notice in order that HITACHI may bring the latest innovations to their customers. Whilst every effort is made to ensure that all specifications are correct, printing errors are beyond Hitachi’s control; Hitachi cannot be held responsible for these errors.
Contents
Contents
Features and Benefits of Centrifugal General Data Dimensional Data Capacities and Selection Data Working Range Refrigerant Cycle Piping and Refrigerant Load Electrical Data Electrical Wiring Available Optional Functions Troubleshooting
page 5 TCGB0043 rev 0 - 07/2009
1 2 3 4 5 6 7 8 9 10 11
Contents
Contents 1.
Features and benefits of RASC units.......................................................................19
1.1. General features and benefits............................................................................................................... 20 1.2.1. Non visible installation & large external static pressure range availability....................................................... 22 1.2.2. Expanded range “NEW” 3HP unit.................................................................................................................... 22 1.2.3. Compact size & low height............................................................................................................................... 22 1.2.4. Energy saving.................................................................................................................................................. 23 1.2.5. Confort............................................................................................................................................................. 23 1.2.6. Low temperature operation.............................................................................................................................. 23 1.2.6. Enlarged system configuration (H-LINK II application).................................................................................... 24 1.2.7. Expanded max. pipe length ............................................................................................................................ 24 1.2.8. Hitachi high reliable Scroll DC-Inverter Compressor........................................................................................ 24 1.2.9. Improved Refrigerant Cycle............................................................................................................................. 25 1.2.10. Flexible inlet and outlet air option................................................................................................................... 25 1.2.11. High indoor units combinability and installation flexibility............................................................................... 25 1.2.12. Compatibility................................................................................................................................................... 25
1.3.
Wide Range of Accessories................................................................................................................. 26 1.3.1. Complete Remote Control Range.................................................................................................................... 26
1.4. Easy and Flexible Electrical Installation................................................................................................ 30 1.5. Easy and Flexible Control Connection(Central Station, Interficie BMS, CSNET WEB)........................ 31 1.6. Start-up Benefits.................................................................................................................................... 31 1.6.1. Automatic Start-up Test.................................................................................................................................... 31
1.7. Maintenance Benefits............................................................................................................................ 32
2.
General Data............................................................................................................33
2.1. RASC – General Data........................................................................................................................... 34 2.1.1. RASC - HVRNE Outdoor Units........................................................................................................................ 34 2.1.2. RASC - HRNE Outdoor Units........................................................................................................................... 35 2.1.3. Fan and Exchanger.......................................................................................................................................... 36 2.1.4. Compressor...................................................................................................................................................... 37
3.
Dimensional Data.....................................................................................................39
3.1. Dimensional data for RASC-H(V)RNE series........................................................................................ 40 3.1.1. RASC-3/5HVRNE............................................................................................................................................ 40 3.1.2. RASC-10HRNE................................................................................................................................................ 41
4.
Capacities and Selection Data.................................................................................43
4.1. RASC-H(V)RNE system selection procedure....................................................................................... 44 4.1.1. Selection parameters....................................................................................................................................... 44 4.1.2. Selection procedure......................................................................................................................................... 44
4.2. Combinability......................................................................................................................................... 52 4.3. Compatibilities....................................................................................................................................... 52 4.4. Standard cooling and heating capacities............................................................................................... 53 4.5. Cooling capacity of the RASC units...................................................................................................... 54 4.6. Heating capacity of the RASC units...................................................................................................... 54 4.7. Correction factors.................................................................................................................................. 55 4.7.1. Piping length correction factor.......................................................................................................................... 55 4.7.2. Defrost correction factor................................................................................................................................... 58
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0
Contents
Contents (Cont.) 4.8. Sensible heat factor (SHF)....................................................................................................................... 59 4.9. Fan performance...................................................................................................................................... 60 4.10. Sound data............................................................................................................................................ 61
5.
Working Range.........................................................................................................63
5.1. Power Supply........................................................................................................................................ 64 5.2. Temperature Range............................................................................................................................... 64
6.
Refrigerant Cycle......................................................................................................65
6.1. Example of single combination.............................................................................................................. 66 6.2. Example of double combination............................................................................................................ 67 6.4. Example of quadruple combination....................................................................................................... 68
7.
Piping and refrigerant charge...................................................................................69
7.1. Refrigerant piping.................................................................................................................................. 70 7.1.1. Refrigerant piping range................................................................................................................................... 70 7.1.2. Refrigerant piping length.................................................................................................................................. 70 7.1.3. Refrigerant piping selection ............................................................................................................................ 71
7.2. Multi-kits and distributors....................................................................................................................... 72 7.2.1. Size data.......................................................................................................................................................... 72 7.2.2. Twin and quadruple system installation........................................................................................................... 73 7.2.3. Piping materials................................................................................................................................................ 74
7.3. Refrigerant charge amount.................................................................................................................... 76 7.3.1. Additional refrigerant charge calculation (R410A)............................................................................................ 76 7.3.2. Simple example of refrigerant charge quantity calculation ............................................................................. 78
7.4. Caution in case of refrigerant leakage................................................................................................... 78 7.4.1. Maximum permitted concentration of HFCs..................................................................................................... 78 7.4.2. Calculation of refrigerant concentration........................................................................................................... 78 7.4.3. Countermeasure for refrigerant leakage.......................................................................................................... 79
8.
Electrical Data..........................................................................................................81
8.1. Electrical data for RASC-H(V)RNE........................................................................................................ 82 8.1.1. RASC-(3/5/10)H(V)RNE................................................................................................................................... 82
9.
Electrical Wiring........................................................................................................83
9.1
General Check...................................................................................................................................... 84
9.2. Setting and Function of DIP Switches for RASC units.......................................................................... 85 9.3. Common Wiring..................................................................................................................................... 87 9.3.1. Electrical Wiring between Indoor and RASC units........................................................................................... 87
9.4. Wiring Size............................................................................................................................................ 88
10. Optional Functions Available....................................................................................91 10.1. Optional functions available for outdoor units....................................................................................... 92 10.2. Optional functions available from remote controllers............................................................................ 93
11. Troubleshooting........................................................................................................97 11.1. Alarm Code............................................................................................................................................. 98
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Contents
¡¡ Unit code list
0 MODELS CODIFICATION
FSN(2)(E) INDOOR UNITS 4-Way Cassette
4-Way Mini Cassette
2-Way Cassette
Unit
Code
Unit
Code
Unit
Code
RCI-1.5FSN2E
7E400002
RCIM-1.5FSN2
60278013
RCD-1.5FSN2
60278030
RCI-2.5FSN2E
7E400004
RCD-2.5FSN2
RCI-3.0FSN2E
7E400005
RCI-4.0FSN2E
Ceiling Unit
Code
60278032
RPC-2.5FSN2E
7E440004
RCD-3.0FSN2
60278033
RPC-3.0FSN2E
7E440005
7E400007
RCD-4.0FSN2
60278034
RPC-4.0FSN2E
7E440007
RCI-5.0FSN2E
7E400008
RCD-5.0FSN2
60278035
RPC-5.0FSN2E
7E440008
RCI-6.0FSN2E
7E400009
RPC-6.0FSN2E
7E440009
RCI
RCIM
RCD
RPC
1~
RCD-2.5 FSN (2) (E/M) Unit type (indoor unit) RCI(M) - RCD RPC - RPI - RPK RPF - RPF(I)
R410A refrigerant Capacity (HP) (1.5~10.0) H-Link Set-free/ System Free
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Series
E: Made in Europe M: Made in Malaysia -: Made in Japan
Contents
FSN(2)(E/M) INDOOR UNITS Duct
Wall
Floor Enclosure
Floor Concealed Enclosure
Unit
Code
Unit
Code
Unit
Code
Unit
Code
Unit
Code
RPI-1.5FSN2E
7E420002
RPIM-1.5FSN2E
7E430002
RPK-1.5FSN2M
60277942
RPF-1.5FSN2E
7E450002
RPFI-1.5FSN2E
7E460002
RPI-2.5FSN2E
7E420004
RPK-2.5FSN2M
60277944
RPF-2.5FSN2E
7E450004
RPFI-2.5FSN2E
7E460004
RPI-3.0FSN2E
7E420005
RPK-3.0FSN2M
60277945
RPI-4.0FSN2E
7E420007
RPK-4.0FSN2M
60277946
RPI-5.0FSN2E
7E420008
RPI-6.0FSN2E
7E420009
RPI-10.0FSN2E
7E420011
RPI
RPIM
RPK
RPF
1~
RPF-2.5 FSN (2) (E/M) Unit type (indoor unit) RCI(M) - RCD RPC - RPI - RPK RPF - RPF(I)
R410A refrigerant Capacity (HP) (1.5~10.0) H-Link Set-free/ System Free
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Series
E: Made in Europe M: Made in Malaysia -: Made in Japan
RPFI
Contents
NOTE: All references of the “Built-in-horizontal” units contained into this Technical Catalogue document, have been abbreviated as “RASC” unit.
Unit
Code
Unit
RASC-3HVRNE
7E340005
NEW
RASC-5HVRNE
7E340008
NEW
Code
RASC-10HRNE
1~
7E340111
3~
RASC-3 H(V)RNE Unit type (outdoor unit) RASC Centrifugal
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Heat pump Compressor Power (HP) (3~10)
Inverter system
Single Phase
E: Made in Europe
R410A refrigerant
NEW
0
Contents
ACCESSORY CODE LIST Accessory
Name
Code
PC-ART
Wall-mounted remote control switch with timer
70510000
PC-P2HTE
Remote control switch with timer
7E899954
PSC-A64S
Central control
60291479
PSC-A1T
Programmable timer
60291482
PC-LH3A
Wireless remote control switch
60291056
PC-ARH
Optional remote controller
60291486
PC-ALH
Receiver kit (for RCI-FSN2E -on the panel-)
60291464
PC-ALHD
Receiver kit (for RCD-FSN2· -on the panel-)
60291467
PC-ALHZ
Receiver kit (for RCI, RCD, RPC, RPI, RPK, RPF(I) (FSN2E) -on the wall-)
60291473
PC-ALHC
Receiver kit (for RCIM-FSN2E -on the panel-)
60291476
PSC-5HR
H-LINK relay
60291105
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Figure
Image not available
Contents
Accessory
Name
Code
PCC-1A
Optional function connector
60199286
PRC-10E1
2-pin extension cord
7E790211
PRC-15E1
2-pin extension cord
7E790212
PRC-20E1
2-pin extension cord
7E790213
PRC-30E1
2-pin extension cord
7E790214
THM-R2AE
Remote sensor (THM4)
7E799907
HARC-BXE (A)
Lonwork BMS Interface (7 inputs up to 6 units)
60290874
HARC-BXE (B)
Lonwork BMS Interface (4 inputs up to 32 units)
60290875
HARC MOD BUS
Integration with installations with intelligent control (Building Management System) Gateway Interface to LON-WORKS BMS systems.
70513200
HC-A64BNP
Integration with installations with intelligent control (Building Management System) Gateway Interface to BAC NET BMS systems.
60xxxx11
CSNET-WEB (V3)
Control System
7E891938
TS001 WEB SCREEN
15-inch touch-screen display
7E891935
PCA-1IO
Integration of teams into H-Link
70519000
HC-A160 SMS
SMS alarm warning device
70519100
page 13 TCGB0043 rev 0 - 07/2009
Figure
0
Contents
Accessory
Name
Code
P-N23WA
Air panel for RCI-FSN2E
70530000
P-N23WAM
Air panel for RCIM-FSN2E
60197160
P-N23DWA
Air panel for RCD-FSN2E
60291574
P-N46DWA
Air panel for RCD-FSN2E
60291575
B-23H4
Adapter for deodorant filter
60199790
F-23L4-K
Antibacteria filter
60199791
F-23L4-D
Deodorant filter
60199793
F-46L4-D
Deodorant filter
60199794
PDF-23C3
Duct connection flange
60199795
PDF-46C3
Duct connection flange
60199796
OACI-232
Fresh-air intake kit
60199797
PD-75
Fresh-air intake kit
60199798
PI-23LS5
3-way outlet parts
60199799
TKCI-232
T-duct connecting kit
60199801
page 14 TCGB0043 rev 0 - 07/2009
Figure
Contents
Accessory
Name
Code
TE-03N
Branch pipe
70800007
TE-04N
Branch pipe
70800008
TE-05N
Branch pipe
70800009
TE-08N
Branch pipe
70800003
TE-10N
Branch pipe
70800004
QE-810N
Branch pipe
70800006
page 15 TCGB0043 rev 0 - 07/2009
Figure
0
System description
Introduction ¡¡ New RASC-H(V)RNE −−
HITACHI is unveiling the new RASC units, designed to provide more energy efficiency. Also, with this new design the noise level has been reduced and the cooling distance increased.
−−
The RASC unit offers a highly advanced product in technological terms with the following advantages: energy efficiency, combinability and flexibility, in keeping with the strictest requirements on the market.
−−
The RASC unit uses Inverter technology, which enables the set temperature to be reached while optimizing electricity consumption and bringing down CO2 emissions.
−−
This series is compatible with HITACHI's SYSTEM FREE system which eliminates the need to duplicate indoor unit models, thus reducing stock.
−−
For this new RASC unit the H-LINK II communication protocol has been developed. This allows up to 160 indoor units and 64 outdoor units to be connected for a same H-LINK II installation, and is compatible with the rest of HITACHI's range.
−−
HITACHI, ever true to its commitment to the environment, has designed the new RASC unit series in compliance with all applicable European directives and regulations (WEEE, RoHS,Green Dot, F-Gas, ...) and has opted to use R410A coolant which does not harm the ozone layer (ODP=0).
¡¡ New features −− New RASC-H(V)RNE outdoor units
New units in the Centrifugal series: −− single-phase −− three-phase
PC-ART
system: 3 and 5HP;
system: 10HP
−−
RCI/RCIM/RCD/RPC/RPI/RPC/RPK/RPF(I) indoor units with H-LINK II and 7mm exchanger.
−−
New KPI units with airflow from 500 m3/h to 3000m3/h.
−−
PC-ART, PSC-A64S, PSC-A16RS remote control.
−−
HARC I/O and HARC SMS computer-controlled systems.
−−
HARC MOD BUS and HARC BAC-NET building management systems.
¡¡ Environmentally-friendly −−
They use R410A coolant. Hitachi IVX/ES units are environmentally-friendly because they use R410A coolant, while the RoHS and green dot regulations are applied in their assembly process, showing Hitachi to be highly aware and respectful of the environment. R410A is totally environmentally-friendly since it does not contain any substances that are harmful to the ozone layer, ODP (Ozone Depleting Product) = 0.
−−
High energy efficiency HITACHI's IVX units are very efficient and permit significant savings in energy when compared with the conventional systems. This energy efficiency means that less CO2, which causes the greenhouse effect, is produced.
page 17 TCGB0043 rev 0 - 07/2009
Features and benefits of RASC units
1. F e a t u r e s a n d B e n e f i t s o f R A S C u n i t s
This chapter describes the features and benefits of the new RASC series outdoor unit. The system's flexibility and modularity offer you the complete solution for your air conditioning requirements.
Contents 1.
Features and benefits of RASC units...................................................19
1.1. General features and benefits.......................................................................................20 1.2.1. Non visible installation & large external static pressure range availability............................22 1.2.2. Expanded range “NEW” 3HP unit.........................................................................................22 1.2.3. Compact size & low height....................................................................................................22 1.2.4. Energy saving.......................................................................................................................23 1.2.5. Confort..................................................................................................................................23 1.2.6. Low temperature operation...................................................................................................23 1.2.6. Enlarged system configuration (H-LINK II application).........................................................24 1.2.7. Expanded max. pipe length .................................................................................................24 1.2.8. Hitachi high reliable Scroll DC-Inverter Compressor.............................................................24 1.2.9. Improved Refrigerant Cycle..................................................................................................25 1.2.10. Flexible inlet and outlet air option........................................................................................25 1.2.11. High indoor units combinability and installation flexibility....................................................25 1.2.12. Compatibility........................................................................................................................25
1.3.
Wide Range of Accessories.........................................................................................26 1.3.1. Complete Remote Control Range.........................................................................................26
1.4. Easy and Flexible Electrical Installation........................................................................30 1.5. Easy and Flexible Control Connection (Central Station, Interficie BMS, CSNET WEB).............................................................31 1.6. Start-up Benefits............................................................................................................31 1.6.1. Automatic Start-up Test.........................................................................................................31
1.7. Maintenance Benefits....................................................................................................32
page 19 TCGB0043 rev 0 - 07/2009
1
Features and benefits of RASC units
1.1. General features and benefits ¡¡ RASC units –– Non
visible installation & large external static pressure range availability
–– Expanded –– Compact –– Energy
range “New” 3 HP unit
size and low height
saving
–– Confort –– Low
temperature operation
–– Enlarged
system configuration (H-Link II application)
–– Expanded –– Hitachi
–– Improved –– Flexible –– High
maximum pipe length
high reliable scroll DC Inverter compressor refrigerant cycle
inlet and outlet air option
indoor units compatibility and installation flexibility
–– Compatibillity
(indoor units FSN1E & FSN2E)
RAS-HRNE 3N~
RASC-HVRNE 1~
Outdoor Units
page 20 TCGB0043 rev 0 - 07/2009
Capacity (HP) 3
5
10
Features and benefits of RASC units
¡¡ Indoor Unit ––
More efficient, use of a 7mm copper pipe exchanger. Capacity (HP)
Indoor Units
1.5
4-way
Cassette
2-way
SYSTEM FREE
Duct for hotels
Duct
low
Floor
Without casing
With casing
Ceiling
Wall
Unit of constant capacity
page 21 TCGB0043 rev 0 - 07/2009
mini
2.5
3
4
5
6
10
1
Features and benefits of RASC units
1.2.1. Non visible installation & large external static pressure range availability ––
Suitable application for both business and household where it is not possible to place the outdoor unit outside the building.
––
To fulfil legislation and local regulations regarding air conditioning units installation.
––
Ducts flexibility allows to adapt each installation depending on each particular need.
Example of no duct installation
Example of installation with ducts
1.2.2. Expanded range “NEW” 3HP unit. BEFORE (fix-speed compressor)
AFTER (DC-Inverter compressor)
1.2.3. Compact size & low height
430 mm 640 mm
1300 mm
1250
mm 1850
- Low Height units → -125 mm reduction W x H x D: 1250 x 1300 x 430 (BEFORE model: 1312 x 555 x 835) Foot Print: 1,6 m
2
Volume: 0,7 m3 Weight (3HP): 168 kg. Weight (5HP): 176 kg.
page 22 TCGB0043 rev 0 - 07/2009
985 mm
mm
- Weight reduction → -48 kg reduction) W x H x D: 1850 x 640 x 985 (BEFORE model: 2050 x 640 x 930) Foot Print: 1,8 m2 Volume: 1,2 m3 Weight (10HP): 262 kg.
Features and benefits of RASC units
1.2.4. Energy saving Electrical input power is reduced by means of compressor’s frequency control (H(V)RNE series instead of ON-OFF fix-speed compressor (HNE series)). Compressor (rpm)
––
––
High power operation
Energy saving operation
In case of existing machines with constant speed, repeated turning on and off wastes energy.
Compressor ON (fix speed control)
1
Fix speed control DC-Inverter control
Hz Max
Hz control
Compressor OFF
(DC-Inverter control)
(DC-Inverter control)
(fix speed control)
DC-Inverter control allows to reduce the annual electricity consumption with a saving of aprox. 25% (depending on each weather conditions) compared to previous fix-speed compressor series.
25% down
Electricity consumption per year
1.2.5. Confort ––
Set temperature is rapidly reached and stabilised by smooth frequency control
Room temperature
(fix speed compressor) Thermo ON
Hz control (DC-Inverter control)
Set temperature DC-Inverter control Fix speed control
Time Hz Max (DC-Inverter control)
Thermo OFF (fix speed compressor)
1.2.6. Low temperature operation ––
Extended Working temperature range in Heating operation.
––
Wide working range including as standard RASC unit Fan Control in cooling mode for operating at low ambient temperature. external temp
“HNE”
series
“H(V)RNE”
series
external temp external temp
page 23 TCGB0043 rev 0 - 07/2009
Features and benefits of RASC units
1.2.6. Enlarged system configuration (H-LINK II application) ––
The System Configuration has greatly improved up to 64 refrigerant cycles.
––
UTOPIA single split unit, a maximum of 64 indoor units can be connected in one H-LINK II.
––
The maximum number of indoor units to be connected has increased up to 160 units. Thus large-scale installations can be done.
––
In the case of simultaneous operation UTOPIA twin, triple and quad indoor units will not need remote control cable among indoor units. H-LINK
Items
Maximum refrigerant cycle number
H-LINK II
16
64
0 to 15
0 to 63
Maximum connectable indoor unit
128
160
Maximum number of equipments
145
200
Indoor unit address range per 1 refrigerant cycle
1.2.7. Expanded max. pipe length −−
Pipe length increase (+20m) for the 10HP unit. Items
Max. Pipe Length (m.)
RASC-10HNE
RASC-10HRNE
30
50
1.2.8. Hitachi high reliable Scroll DC-Inverter Compressor
New Compressor mechanism (Release Valve)
––
Improved Performance at Intermediate Season.
––
High efficiency at low speed has been significantly improved by adopting new compressor mechanism and the DC-Inverter motor.
––
Horizontal DC-Inverter Compressor configuration for (3/5)HP → as a result: “low height” units. Special horizontal DC-Inverter compressor configuration.
New DC-Inverter motor (Concentrated Winding)
––
Compressor DC-Control Standard equipment of power-saving technology Other facility/multiple air conditioners are not limited to use during on-peak energy hours thanks to demand control function. IPM (Intelligent Power Module)
ISPM (Inverter System Power Module)
*Only for RASC-(3/5)HVRNE
*Only for RASC-10HRNE
page 24 TCGB0043 rev 0 - 07/2009
Features and benefits of RASC units
1.2.9. Improved Refrigerant Cycle –– ––
Heat exchanger with optimised piping (ø9.53mm → ø7mm) Accordion Aluminium Fin with low Pressure Loss (20% reduction of Heat Exchanger resistance) Compressor Highly-efficient DC INVERTER
Exchanger duct 7mm in diameter
Rear side
Indoor unit heat exchanger
Air
1
New fin with low pressure loss
Front side
20% reduced Draft resistance
Air
Electronic expansion valve
Air
Stop valve of the liquid pipe
electronic expansion valve
Single-phase receiver
Increase in enthalpy due to use of the supercooling circuit
1.2.10. Flexible inlet and outlet air option Side panels and grilles can be changed depending on each installation needs. Inlet air option
Outlet air option (RASC-10 only)
(View from top)
(Factory supplied)
Fan motor shall be rotated as it is indicated
(Option)
Change Panel
Change Panel
1.2.11. High indoor units combinability and installation flexibility
Multikits and distributors example
Following the Utopia DC Inverter concept, the new RASC-(3/5/10) DC-Inverter units accepts the combination with different types of Hitachi Indoor units.
supplied by HITACHI:
4-Way Cassette type RCIM-1.5FSN2 RCI-1.5FSN2E RCI-2.5FSN2E RCI-3.0FSN2E RCI-4.0FSN2E RCI-5.0FSN2E RCI-6.0FSN2E --
TE-N multikit
2-Way Cassette type
-RCD-1.5FSN2 RCD-2.5FSN2 RCD-3.0FSN2 RCD-4.0FSN2 RCD-5.0FSN2 RCD-6.0FSN2 --
Ceilling type
In-the-Ceiling type
Wall type
Floor type
--RPC-2.5FSN2E RPC-3.0FSN2E RPC-4.0FSN2E RPC-5.0FSN2E RPC-6.0FSN2E --
RPIM-1.5FSN2E RPI-1.5FSN2E RPI-2.5FSN2E RPI-3.0FSN2E RPI-4.0FSN2E RPI-5.0FSN2E RPI-6.0FSN2E RPI-10.0FSN2E
-RPK-1.5FSN2M RPK-2.5FSN2M RPK-3.0FSN2M RPK-4.0FSN2M ----
-RPF-1.5FSN2E RPF-2.5FSN2E ------
Floor Concealed type
-RPFI-1.5FSN2E RPFI-2.5FSN2E ------
The available cycles configuration are shown in the next table: Single
QE-810N distributor
3HP
5HP
3.0
5.0
10HP 10.0
Twin
1.5
1.5
2.5
2.5
Quad.
--
--
--
--
5.0
5.0
4.0 2.5
6.0 2.5
2.5
2.5
1.2.12. Compatibility New RASC-(3/5/10) DC-Inverter series are compatible with all FSN(1/2) , FSN(1/2)E and FSN(1/2)M indoor units page 25 TCGB0043 rev 0 - 07/2009
Features and benefits of RASC units
1.3. Wide Range of Accessories All the units have a large set of accessories that facilitate installation, operation and maintenance. These accessories are designed to improve and adapt the unit to the type of installation the system needs, always keeping in mind the parameters of quality that the system requires. These accessories are of type: ––
Remote control switches
––
Panels
––
Filters
––
Multikits
1.3.1. Complete Remote Control Range HITACHI has three different remote control systems that can be used with DC INVERTER outdoor units. ––
Individual control systems
––
Centralized control systems
––
Computer control systems
HITACHI also has interface equipment to integrate its machines in installations with intelligent control or BMS (Building Management System).
¡¡ Individual Control Systems PC-ART Remote control switch with timer:
PC-ART Wall-mounted remote control switch with timer
––
LCD display.
––
4 timer settings per week.
––
Optional functions like locking, energy saving, and intelligent room temperature maintenance.
––
Automatic testing to solve problems that provides information continually with an alarm code.
––
Access to all function settings for the indoor units.
––
Thermostat function available.
––
Details of all settings are given on screen, facilitating system functionality checking.
––
If there are problems with the power supply the backup functions keep the timer working.
––
Indoor unit control groups (from 1 to 16 units in each group).
PC-LH3A PC-LH3A Wireless Remote Control Switch
A wireless remote control switch that removes the need for wiring and provides simple one-touch operation. Permits control of two or more units simultaneously.
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Features and benefits of RASC units
PC-ARH Smaller remote control than conventional remote controls. Its main features are setting the unit's temperature and operating mode. It is ideal for facilities such as hotels due to its user-friendliness. Two remote control switches or a group control (for a maximum of 16 units) can be used in a similar way to the standard remote control switch. When a problem occurs, an alarm code immediately shows the details of the error. There are also optional functions such as limiting the operating mode, limiting the maximum temperature in heating/cooling mode, selecting the fan speed, etc. PC-ARH Basic wired remote control switch
PSC-A1T Programmable timer used to set operating schedules for air conditioning systems. Along with the PSC-A64S and PC-ART controllers, the air conditioners they control can be operated according to the schedule below:
PSC-A1T
––
The timer can be set at 7-day intervals and operation/stop can be set three times a day.
––
The remote control switch can be disabled during the OFF time (when used with PSC- A64S and PC-ART).
––
Two types of weekly schedule (A and B) can be set and easily changed for summer and winter operation.
––
Settings are all digitally displayed, allowing operations and settings to be easily checked.
The power failure backup function prevents the timer from stopping because of a power failure (even if it lasts for weeks).
Timer
¡¡ Centralized Control Systems PSC-A64S (central control)
PSC-A64S Central station
––
A group of up to 64 remote control switches can be connected to an H-LINK II to control up to 128 indoor units.
––
Up to 8 PSC-A64S units can be connected to an H-LINK II.
––
In addition to the basic functions, operation mode and temperature setting, it is possible to set the air flow or auto louver.
––
When a problem occurs, an alarm code immediately shows the details of the error.
––
A signal terminal to provide external inputs is supplied as standard which control the following functions:
––
On/Off
––
Emergency stop
––
Central operation output
––
Central alarm output
PSC-A16RS (central control) ––
Up to 16 indoor units can be connected.
––
User-friendly.
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1
Features and benefits of RASC units
¡¡ Computer Control Systems CSNET-WEB HITACHI has developed the CSNET WEB system enabling equipment to be controlled remotely from any point of the local corporate network, or even via the Internet. CSNET WEB can be connected to the H-LINK network from any point on the network using a non-polarity two-wire cable, facilitating the installation task to the maximum. 16 outdoor units and 128 indoor units can be controlled by each H-LINK. CSNET WEB offers the following functions: ––
Locking of the different setting points.
––
Temperature selection.
––
Cooling and heating mode selection.
––
Fan speed selection.
––
Monitoring of energy consumption percentage.
––
Automatic cooling/heating mode.
––
Annual timer.
TS001 web screen
CSNET-WEB
Hitachi has developed a 15" touchscreen, which by using the CSNET WEB and without the need for another computer, allows the air conditioning units to be controlled, monitored and managed.
Control System
This screen is very practical for surveillance centers. HARC I&O Allows non-HITACHI units (fans, air processing units, etc) to be incorporated in the H-LINK system. Therefore, specific parameters of these units can be monitored and controlled through the CSNET WEB. HARC I&O units can regulate up to 5 signals such as fan speed control, off, on, etc. HARC SMS Alarm
TS001 web screen
SMS alarm warning device. The message contains the alarm and the unit to which it refers. This message can be sent up to 5 different numbers. The message is repeated as a reminder until a response is sent.
HARC I&O
HARC SMS Alarm
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Features and benefits of RASC units
¡¡ Building Management Systems HARC BX Integration with installations with intelligent control (Building Management System) Gateway interface with LON-WORKS BMS systems (installations with intelligent control or BMS). HARC-BX allows control of up to 5 setting points and remote monitoring of up to 9 values. Connecting the HARC-BX to an H-LINK (communication line between machines) allows the use of up to 8 coolant cycles and control of up to 64 indoor units. The HARC-BX can be connected to any point in the H-LINK system. HARC MOD BUS Integration with installations with intelligent control (Building Management System) HARC BX
Gateway Interface to MOD BUS BMS systems. The use of HARC MOD BUS allows the unit to be remotely controlled, as well as its parameters to be monitored. Connecting the HARC-MOD BUS to an H-LINK (communication line between machines) allows the use of up to 8 coolant cycles and control of up to 64 indoor units. A maximum of 8 HARC MOD BUS can be connected to the same H-LINK. The HARC-MOD BUS can be connected to any point in the H-LINK system.
HARC MOD BUS
The MOD BUS systems have the advantage that the MOD BUS protocol is an open system and therefore it allows this software to be used at no cost for the user. HC-A64BNP Integration with installations with intelligent control (Building Management System) Gateway Interface to BAC-NET BMS systems. The use of HC-A64BNP allows the unit to be remotely controlled, and its parameters to be monitored. Connecting the HC-A64BNP to an H-LINK (communication line between machines) allows the use of up to 8 refrigerant cycles and control of up to 64 indoor units. Up to eight HC-A64BNP can be connected to the same H-LINK.
HC-A64BNP
The HC-A64BNP can be connected to any point in the H-LINK system. The advantage of the HC-A64BNP systems is that the BAC-NET protocol is an open system and therefore it allows this software to be used at no cost for the user.
NOTE: For more information on the remote control switches see the TC0050 technical catalogue.
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Features and benefits of RASC units
1.4. Easy and Flexible Electrical Installation ¡¡ Interconnection of Units Via the New H-LINKII The units interconnect via a bus called H-LINKII, consisting of 2 non-polarity cables and accepting lengths of up to 1,000m. Accessories are available if required to increase this length to 5,000m.
¡¡ Up to 160 Indoor Units Connected to Each Circuit. Each H-LINKII bus can communicate up to 160 indoor units. Taking into account the absence of polarity and the length of line permitted, the flexibility of the interconnection between the machines is very high. This lets you, for example, connect the H-LINKII of a cooling system's indoor unit to the H-LINKII of another system's indoor unit.
Example of H-Link II system:
H-LINKII BUS
NOTES: When using the H-LINKII system, DIP switches have to be adjusted. If the DIP switches are not set or set incorrectly, an alarm may occur due to transmission failure. Total wiring length for the remote control switch can be extended to up to 5,000m. If total wiring length is less than 30m, it is possible to use the normal wiring (0.3mm²). The H-LINKII system provides maximum flexibility for system design; installation is easy, and total costs are reduced. Furthermore, it can be controlled centrally by connecting CSNET WEB to H-LINKII wiring located in the room next to the room where CSNET WEB is installed. You can also control the installation by Internet via CSNET WEB
Specifications: Transmission cable: Polarity of transmission cable: Maximum outdoor units Maximum indoor units Maximum number of equipment units Maximum wiring length: Recommended cable: Voltage:
2-wire Non-polar wire 64 units per H-LINKII system 160 units per H-LINKII system 200 Total 1,000m (including CSNET WEB) Shielded twisted pair cable or shielded pair cable, over 0.75mm² (equivalent to KPEV-S) DC5V
In the case of double, triple and quadruple systems the interior units can be controlled using a single remote control switch without having to join them with an operating cable for the remote control. Operation wiring
An operating cable is not required for using the remote control switch
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Features and benefits of RASC units
1.5. Easy and Flexible Control Connection (Central Station, Interficie BMS, CSNET WEB) ¡¡ No Polarity Thanks to the absence of polarity, any centralized control can be connected directly to the H-LINKII bus, which means that special lines are not needed.
¡¡ Auto-Configuration Aside from the customized configuration, the control systems are also auto-configurable; for example, they have the capacity of interpreting the type of machine they are connected to, and detecting the type of indoor unit or its power.
1.6. Start-up Benefits 1.6.1. Automatic Start-up Test There are three set-up modes: ––
Test run
––
Test run from the remote control switch
––
Test run from the outdoor unit
¡¡ Test Run The automatic test run can be activated through outdoor unit DIP switch or indoor unit remote control switch. The outdoor unit 7-segment display gives all the necessary information to verify the correct operation of the system.
Test run from outdoor unit DIP switches
––
Connected Outdoor Units Identification system: Using a remote control switch, you can confirm what series the operational outdoor units belong to (e.g. single or multiple).
––
Automatic identification of each indoor unit. They can also be manually assigned using the unit's DIP rotating switch.
¡¡ Test Run from the Remote Control Switch Using the remote control, 3 operations can be run. ––
Auto-diagnostic: Quick check of the operating conditions of the indoor units and the outdoor unit.
––
Data memory query: If an abnormality occurs, the LCD remote control switch shows an alarm code and save all the operation settings of the unit at the time the fault occurs, so that a quick diagnosis can be made of the installation.
––
Optional Function Setting: The remote control switch allows cancellation of the 4-degree offset in the heating mode and an increase in the fan speed setting, among 29 possible options. This way, multiple indoor units can be set at the same time. Also, the configuration can easily be changed, even after the installation has been completed.
Test run from the remote control switch
¡¡ Test Run Procedure from the Outdoor Unit: The outdoor unit PCB is equipped with a 7-segment screen, which depending on the position of the PSWs shows the following parameters in sequence ––
Outdoor temperature
––
Discharge gas temperature
––
Evaporation temperature in heating mode
––
Condensing temperature
––
Discharge pressure
––
Compressor run time
––
This allows quick and accurate diagnosis of the installation during normal operation or test run.
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Features and benefits of RASC units
1.7. Maintenance Benefits ¡¡ Minimum Maintenance The RASC units have been designed in line with Hitachi's philosophy, guaranteeing great reliability and robustness and reducing maintenance to a minimum.
¡¡ Easy Accessibility The RASC system components are easily accessible. You can access all of the unit's components to perform the necessary operations through a simple cover. The entire system is designed for maintenance operations to be easy and simple.
¡¡ Alarm information in the remote control switch through the PCB Alarm signals can be received through the remote control switches (whether individual or centralized), the CSNET WEB software, or via the electric plate of the outdoor unit, thus facilitating maintenance work.
¡¡ Alarm Codes The alarms are grouped by elements within the system in order to facilitate maintenance work and optimize the fitter's job
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General Data
2. G e n e r a l D a t a
This chapter offers a summary of the most important features of the RASC-H(V)RNE series.
Contents 2.
General Data............................................................................................................33
2.1. RASC – General Data........................................................................................................................... 34 2.1.1. RASC - HVRNE Outdoor Units........................................................................................................................ 34 2.1.2. RASC - HRNE Outdoor Units........................................................................................................................... 35 2.1.3. Fan and Exchanger.......................................................................................................................................... 36 2.1.4. Compressor...................................................................................................................................................... 37
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2
General data
2.1. RASC – General Data 2.1.1. RASC - HVRNE Outdoor Units
RASC MODEL
RASC-3HVRNE
RASC-5HVRNE 1~ 230V 50Hz
Electrical power supply Nominal cooling capacity
kW
7.10
12.50
Nominal heating capacity Energy efficiency in cooling mode (EER) Energy efficiency coefficient in heating mode (COP)
kW
8.00
14.00
kW/kW
2.90
2.71
kW/kW
3.10
3.10
Color (Munsell code)
-
Sound pressure level (cool/heat) Sound power level
dB(A)
Natural Grey (1.0Y8.5/0.5) 46/46
55/56
dB(A)
61
71
mm
430
430
External dimensions Width
mm
1250
1250
Depth
mm
1300
1300
kg
168
176
Height
Refrigerant
Type
-
R410A
Ref. Flow control
-
Microprocessor-controlled expansion valve
Compressor
Net weight
Type
-
DC inverter driven
Qty.
-
1
1
kW
1.38
2.50
Outdoor fan
Power Type
-
Qty.
-
2
2
m³/min
40
65
Air flow rate Heat exchanger
-
Power Refrigerant Pipes
Centrifugal Fan
Multi-pass cross-finned tube
W
Type
350
Liquid piping
950 Flare-nut connection (factory supplied)
mm (in) mm (in)
Ø9.53 (3/8) Ø15.88 (5/8)
Ø9.53 (3/8) Ø15.88 (5/8)
Condensate drain pipe size
mm
Ø25 OD
Ø25 OD
Refrigerant charge
Kg
2.80
4.00
Maximum electrical current
A
28
37
Packaging measurements
m³
1.04
1.04
Size
Gas piping
OD: Outer Diameter
NOTE: 1. The nominal cooling and heating capacity is the combined capacity of the RASC system, and is based on EN14511. Operating Conditions
Cooling
DB 27.0°C WB 19.0°C DB 35.0°C Outdoor air inlet temperature WB Piping length: 7.5 meters; Piping lift: 0 meters DB: dry bulb; WB: wet bulb Indoor air inlet temperature
Heating 20.0°C 7.0°C 6.0°C
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2. The sound pressure level is based on following conditions: -- 1.5 meters beneath the unit (With duct). -- Voltage of the power source is 230V. The above was measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. 3. In night mode, the noise level decreases 4dB(A). 4. The COP and EER have been calculated with RCI-FSN2E model indoor units.
General Data
2.1.2. RASC - HRNE Outdoor Units
RASC MODEL
RASC-10HRNE 3N~ 400V 50Hz
Electrical power supply Nominal cooling capacity
kW
23.00
Nominal heating capacity
kW
25.00
Energy efficiency in cooling mode (EER)
kW/ kW
2.71
Energy efficiency coefficient in heating mode (COP)
kW/ kW
2.91
Color (Munsell code)
-
Natural Grey (1.0Y8.5/0.5)
Sound pressure level (cool/heat)
dB(A)
68
dB(A) mm mm mm kg
83 640 1850 985 262
Type
-
R410A
Ref. Flow control
-
Microprocessor-controlled expansion valve
Type
-
DC inverter driven
Qty.
un.
1
Power
kW
4.00
Type
-
Centrifugal Fan
Qty.
un.
1
m³/min
110
Heat exchanger
un.
1
Power
W
1500
-
Flare nut / Flange connection
mm (in) mm (in)
Ø12.7 (1/2) Ø25.40 (1/1)
Condensate drain pipe size
mm
Ø25 OD
Refrigerant charge
Kg
9.00
Maximum electrical current
A
40
Packaging measurements
m³
1.80
Sound power level Height Width Depth
Outside measurements
Fan
Compressor Refrigerant
Net weight+-
Refrigerant Pipes
Air flow rate
Type Liquid piping
Size
Gas piping
2
OD: Outer Diameter
NOTE: 1. The nominal cooling and heating capacity is the combined capacity of the RASC system, and is based on EN14511. Operating Conditions
Cooling
Heating
DB 27.0°C WB 19.0°C DB 35.0°C Outdoor air inlet temperature WB Piping length: 7.5 meters; Piping lift: 0 meters DB: dry bulb; WB: wet bulb
20.0°C 7.0°C 6.0°C
Indoor air inlet temperature
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2. The sound pressure level is based on following conditions: -- 1.5 meters beneath the unit (With duct). -- Voltage of the power source is 400V. The above was measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. 3. In night mode, the noise level decreases 4dB(A). 4. The COP and EER have been calculated with RCI-FSN2E model indoor units.
General data
± 2.1.3. Fan and Exchanger
¡¡ RASC-3/5HVRNE
Heat exchanger
Outdoor Unit Model
RASC-3HVRNE
Heat exchanger type
-
Material
-
Piping
Outer diameter
Multi-pass cross-finned tube Copper
mm
7
Row Qty.
-
3
5
Number of tubes/row
-
100
60
Material
Fin
RASC-5HVRNE
-
7
Aluminum
Pitch
mm
1.9
1.9
Maximum operating pressure
MPa
4.15
4.15
m²
0,54
0,54
-
1
Total face area Number of coils/unit Type
-
Number/unit Fan
Outer diameter
Fan unit
Revolutions Nominal air flow Type
-
2
2
mm
240
240
rpm
970 ± 5%
1480 ± 5%
m3/min
40
-
Starting method Motor
Power
1 Multi-blade centrifugal fan
65 Drip-proof enclosure
-
Permanent condenser
W
350
Qty.
-
1
1
Insulation class
-
F
F
E305ALD-27A2
E-405ALD-36A2
Compressor
950
¡¡ RASC-10HRNE
Heat exchanger
Outdoor Unit Model
RASC-10HRNE
Heat exchanger type
-
Multi-pass cross-finned tube
Material
-
Copper piping
Piping
Fin
Outer diameter Row Qty.
Ømm
7
-
5
Number of tubes/row
-
150
Material
-
Aluminum
Pitch
mm
1.9
Maximum operating pressure
MPa
4.15
m²
0,83
Total face area Number of coils/unit Type Number/unit Fan
Outer diameter
Fan unit
Revolutions Nominal air flow Type Starting method Motor
Power
-
1
-
Multi-blade centrifugal fan
-
1
mm
305
rpm
950 ± 5%
m3/min
110
-
Drip-proof enclosure
-
Permanent Condenser
W
1500
Qty.
-
1
Insulation class
-
F
Compressor
E-656DHD-65D2
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General Data
2.1.4. Compressor
Model Compressor type
E305ALD-27A2
E405ALD-36A2
E656DHD-65D2 Hermetic scroll
Hermetic scroll
Hermetic scroll
Pressure resistance
Discharge
MPa
4.15
4.15
4.15
Suction
MPa
2.21
2.21
2.21
Starting method
-
Inverter-driven
Inverter-driven
Inverter-driven
Motor
Poles
-
4
4
4
Insulation class
-
E
E
E
Oil type
-
FVC68D
FVC68D
FVC68D
Oil quantity
L
1.2
1.2
1.9
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2
Dimensional Data
3. D i m e n s i o n a l D a t a This chapter shows the dimensions and minimum space required to install each unit of the RASC-H(V)RNE series.
Contents 3.
Dimensional Data.................................................................................39
3.1. Dimensional data for RASC-H(V)RNE series................................................................40 3.1.1. RASC-3/5HVRNE.................................................................................................................40 3.1.2. RASC-10HRNE.....................................................................................................................41
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3
Dimensional Data
3.1. Dimensional data for RASC-H(V)RNE series 3.1.1. RASC-3/5HVRNE
Installation space
Units in: mm
No.
Description
Remarks
1
Air inlet
2
Air outlet
3
Electrical box cover
4
Electrical box
5
Fan service cover
6
Stop valves cover
7
Holes for wiring connections
2-Ø26
8
Drain pipe
Ø26
9
Holes for fixing unit
4-Ø14
10
Refrigerant liquid pipe
Flare nut: Ø9.53 (3/8”)
11
Refrigerant gas pipe
Flare nut: Ø15.88 (5/8”)
12
Optional air inlet
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Dimensional Data
3.1.2. RASC-10HRNE
3
Installation space
Units in: mm
No.
Description
Remarks
1
Air inlet
2
Air outlet
3
Electrical box cover
4
Electrical box
5
Fan service cover / Optional air outlet
6
Stop valves protection
7
Holes for wiring connections
2-Ø25
8
Drain pipe
2-Ø30
9
Holes for fixing unit
4-Ø12x28
10
Refrigerant liquid pipe
Flare nut: Ø12,7 (1/2”)
11
Refrigerant gas pipe
Flare nut: Ø25,4 (1”)
12
Optional air inlet
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Capacities and Selection Data
4. C a p a c i t i e s a n d S e l e c t i o n D a t a This chapter is a guide for selecting the most suitable units according to your requirements and indicates the performance data for each unit in the RASC-H(V)RNE Series.
Contenido 4.
Capacities and Selection Data.............................................................43
4.1. RASC-H(V)RNE system selection procedure...............................................................44 4.1.1. Selection parameters............................................................................................................44 4.1.2. Selection procedure..............................................................................................................44
4.2. Combinability.................................................................................................................52 4.3. Compatibilities...............................................................................................................52 4.4. Standard cooling and heating capacities.......................................................................53 4.5. Cooling capacity of the RASC units..............................................................................54 4.6. Heating capacity of the RASC units..............................................................................54 4.7. Correction factors..........................................................................................................55 4.7.1. Piping length correction factor...............................................................................................55 4.7.2. Defrost correction factor........................................................................................................58
4.8. Sensible heat factor (SHF)...............................................................................................59 4.9. Fan performance..............................................................................................................60 4.10. Sound data....................................................................................................................61
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4
Capacities and Selection Data
4.1. RASC-H(V)RNE system selection procedure RASC units are suitable for business premises and houses where the use of a conventional outdoor unit is either prohibited or impossible. The following procedure is an example of how to select the system units and indicates how to use all the parameters indicated in this chapter. Considering the layout of the building, the possible position of the indoor units and the air flow distribution, select the unit features that provide the greatest efficiency and comfort. Decide a position for the RASC unit that facilitates service and maintenance tasks, as well as easy refrigerant pipe installation.
4.1.1. Selection parameters To calculate the RASC units, it will be necessary to consult and/or use a serie of parameters shown in tables and graphics presented in the different chapters of this catalogue. A summarized list is shown below: −− −− −− −−
For general information: Chapter 2. For operating space options: Chapter 3. For unit combinations: Section 4.2. For capacities: Sections 4.4,4.5,4.6.
−− −− −−
For sensible heat factor: Section 4.8.
−−
Piping length and lift range: Chapter 7.
For correction factors: Section 4.7. For noise characteristics: Section 4.10 Sound data.
In case of installation with duct (RASC with RPI indoor unit) the fan performance for duct calculations should be considered, as shown in Section 4.11. The RPI units are designed with three possible static pressure ranges in order to adapt to all installation necessities.
4.1.2. Selection procedure The system selection procedure is as follows: Firstly, the RASC unit is pre-selected according to the design conditions. Secondly, the combination with indoor units and their respective models is chosen. Finally, the theoretical capacity values taken from the different tables are corrected to take account of the various correction factors that exist. This procedure is divided into two parts: cooling and heating.
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Capacities and Selection Data
Step 1:
¡¡Cooling mode Initial pre-selection This example is based on an ambient with the following characteristics: Design Conditions: Outdoor air inlet
Dry bulb: 35 ºC
Indoor air inlet
Dry bulb: 25 ºC Wet bulb: 17 ºC
Required cooling load
10 kW
Required sensible heat load
7 kW
4
Room to condition: 25/17 ºC (DB/WB)
Location of the RASC unit (false ceiling)
Outdoor ambient: 35 ºC DB
The example used consists of a determined ambient (commercial premises) in which the shop window area can be used to place the RASC in the false ceiling, so taking advantage of the height of the establishment. It has been assumed that this ambient will require a cooling load of 10 kW, of which the client has set a minimum sensible heat load condition of 7 kW. The outdoor ambient temperature (at the point where air enters the RASC unit) is 35 ºC DB and the air inlet temperature for the indoor unit is 25/17 ºC (DB/WB). Section 4.7. (Cooling capacity of the RASC units) should be seen once the characteristics of the space to be conditioned have been studied in order to find the unit that will provide the appropriate cooling capacity for these ambient conditions.
RASC Unit
Cooling capacity of the RASC unit (kW)
RASC-3HVRNE
7.55
RASC-5HVRNE
13.25
RASC-10HRNE
23.65
As can be seen in the table, the RASC unit just above the energy demand of the ambient is the RASC-5HVRNE and so this unit will be pre-selected.
NOTE: If the air inlet temperature for the indoor unit or RASC is not contained in the capacity table in section standard cooling and heating capacities, an interpolation should be carried out using the values above and below those of the air inlet temperature.
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Capacities and Selection Data
Step 2:
Selecting the combination of the RASC unit and the indoor unit Taking into account the design of the theoretical room and the possible position of the indoor units and their subsequent air distribution, the conclusion is that the most appropriate combination would be an RASC unit with two indoor units. Referring to section Combinability, you can check that the only possible double combination for a RASC-5HVRNE is with two indoor units of 2.5 HP. For this example it is assumed that an indoor RCI-2.5FSN2E and an indoor RPI- 2.5FSN2E unit are used in order to show how the choice of indoor unit can affect the different factors presented in this chapter. The following is a simple plan drawing of the layout of the installation adopted for this example:
Installation characteristics: Total piping length
10 m
Height difference between indoor and RASC units
0m
Normally, given that RASC units are designed to be installed in false ceilings, the height difference between the indoor units and the RASC is 0 m. In other words, they are at the same level. A certain height difference can also exist between the RASC unit and the indoor units. For example, when the RASC unit is located in a garage or other room located on a lower floor. However, the calculation method for the piping length correction factor is the same in both cases.
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Capacities and Selection Data
Step 3:
Cooling capacity correction The actual cooling capacity of the pre-selected unit must be calculated applying the necessary correction factors:
QC= QMC x fLC QC: Actual cooling capacity of the RASC unit (kW)
QMC: Maximum cooling capacity of the RASC unit (kW) fLC: Piping length correction factor
The maximum cooling capacity (QMC) of the RASC-5HVRNE unit is 13,25 kW. Calculation of fLC: Both the length of the refrigerant piping used and the height difference between the RASC unit and the indoor units directly affect the performance of the unit. This concept is quantified in the piping length correction factor. To determine this value, it is necessary to consult section “Piping length correction factor”, where it can be seen that for the characteristics of our example (piping length of 10 metres and a height difference between the RASC unit and the indoor units of 0 metres) the piping length correction factor is 0.99 Calculation of QC: Once the correction factors to be applied have been determined, the formula for actual cooling capacity of the unit RASC-5HVRNE can be applied:
QC= 13.25 kW x 0.99 = 13.12 kW As can be seen, the actual cooling capacity of the RASC-5HVRNE (13.12 kW) unit is greater than the cooling load required by the ambient to be conditioned (10 kW), but before deciding that the unit is valid, it must be verified that the unit complies with the requirement for the minimum sensible heat capacity set by the client (7 kW).
NOTE: If the actual cooling capacity calculated is less than that provided by the pre-selected unit, the calculation must be done again with the unit immediately higher.
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4
Capacities and Selection Data
Step 4:
Sensible heat capacity (SHC) The system requirements specify a minimum sensible heat capacity of 7 kW. Once the real cooling capacity of the RASC-5HVRNE unit has been determined, its sensible heat capacity in combination with the two indoor units, RCI-2.5FSN2E and RPI-2.5FSN2E, can be calculated. Firstly, the real cooling capacity of each indoor unit must be calculated. This is done using the following formula:
QCI=
QC x
QMCI QMCC
QCI: Actual cooling capacity of the indoor unit (kW) QC: Actual cooling capacity of the RASC unit (kW)
QMCI: Maximum cooling capacity of the indoor unit (kW). See section “Combinabylity”
QMCC: Maximum cooling capacity of the combination (kW). See section “Combinabylity”
Applying this we obtain:
QRPI-2.5= 13.12 kW x
7 kW 14 kW
= 6.56 kW = QRCI-2.5
Once the calculation of the indoor units´ cooling capacity has been completed, the sensible heat capacity can be calculated using the following formula:
SHC = QCI x SHF SHC: Sensible heat capacity (kW) QCI: Actual cooling capacity of the indoor unit (kW) SHF: Sensible heat factor
Calculation of SHF: To determine the sensible heat factor (ratio of sensible heat relative to the total) the table in section “Sensible heat factor (SHF)” has to be seen, in which the different SHF values are shown for the different indoor units for each of the three possible fan speeds (High, Medium, Low). The value used is that relating to the high fan speed. Doing this we obtain:
SHFRPI-2.5 = 0.76 SHFRCI-2.5 = 0.73 Calculation of SHC: inally, once the sensible heat factors have been obtained, the sensible heat capacity of each indoor unit can be calculated by applying the previous formula.
SHCRPI-2.5 = 6.56 kW x 0.76 = 4.99 kW SHCRCI-2.5 = 6.56 kW x 0.73 = 4.79 kW The cooling capacity data for the RASC-5HVRNE unit taken from the table in section “Maximum cooling capacities of the RASC units” is calculated on the basis of a relative humidity of 50% which means that an indoor air inlet temperature of 17ºC WB corresponds to a temperature of 24 ºC DB. However, the difference between the indoor air inlet dry bulb temperature required by the system (25 ºC) and the indoor air inlet dry bulb temperature recorded in the cooling capacity data (24 ºC) requires an adjustment of the sensible heat capacity for each indoor unit.
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Capacities and Selection Data
Step 5:
Sensible heat capacity correction (SHCC) The following formula should be used to carry out the sensible heat correction for each indoor unit:
SHCC = SHC + (CR x (DBR - DB))
SHCC: Corrected sensible heat capacity (kW)
SHC: Sensible heat capacity (kW)
CR: Correction ratio due to humidity DBR: Dry bulb evaporator temperature (ºC)
DB: Dry bulb evaporator temperature (ºC) for each wet bulb temperature from the table (HR = 50 %)
Calculation of CR: The correction ratio due to humidity is shown in the table contained in section “Maximum cooling capacities of the RASC units”. This coefficient corrects the sensible heat capacity of a unit according to the relative humidity of the air entering the indoor unit. The greater the relative humidity the lower will be the sensible heat capacity and vice versa. The correction ratio CR for the RASC-5HVRNE unit is 0.51. Calculation of SHCC: Once the CR has been identified for the RASC-5HVRNE unit the corrected sensible heat capacity SHCC of the indoor unit can be calculated:
SHCC_RPI-2.5 = 4.99 kW + (0.51 x (25 - 24)) = 5.50 kW SHCC_RCI-2.5 = 4.79 kW + (0.51 x (25 - 24)) = 5.30 kW The sensible heat capacity for the combination will be:
SHCC = SHCC_RPI-2.5 + SHCC_RCI-2.5 = 5.50 kW + 5.30 kW = 10.80 kW As can be seen, the corrected sensible heat capacity of the system (10.80 kW) is greater than the sensible heat capacity required by the ambient to be conditioned (7 kW). Therefore, it can be said that the RASC-5HVRNE unit meets the minimum cooling requirements set for the system. In order to validate the pre-selection of the RASC-5HVRNE unit, its compliance with the minimum cooling requirements and the minimum heating requirements must be checked.
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4
Capacities and Selection Data
¡¡Heating Mode
Step 1:
Initial pre-selection The heating requirements for the previous example are shown below. Ambient conditions Outdoor air inlet
Dry bulb: 3 ºC Wet bulb: 0 ºC
Indoor air inlet
Dry bulb: 20 ºC
Required heating load
11 kW
The cooling ambient studied has the following heating characteristics:
Room to condition: 20 ºC DB
Location of the outdoor unit (false ceiling)
Outdoor ambient: 3/0 ºC (DB/WB)
It has been assumed that the required heating load for this ambient is 11 kW. The outdoor ambient temperature (at the point where air enters the RASC unit) is 3/0 ºC (DB/WB) and temperature of the indoor air inlet is 20 ºC DB. Section “Maximum heating capacities of the RASC units” should be seen once the characteristics of the space to be conditioned have been studied in order to verify that the unit pre-selected for cooling provides an appropriate heating capacity for these conditions:
RASC Unit
Heating capacity of the RASC unit (kW)
RASC-5HVRNE
13.55
As can be seen in the table, the RASC-5HVRNE unit provides a theoretical heating capacity greater than the heating demand required by the environment. Therefore, the calculation process can continue.
NOTE: If the unit pre-selected for cooling does not provide the heating load required by the environment the pre-selection should be changed and the next unit should be chosen.
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Capacities and Selection Data
Step 2:
Heating capacity correction The actual heating capacity of the pre-selected unit must be calculated applying the necessary correction factors:
QH= QMH x fLH x fd QH: Actual heating capacity of the RASC unit (kW)
QMH: Maximum heating capacity of the RASC unit (kW) fLH: Piping length correction factor
fd: Defrosting correction factor
The maximum heating capacity (QMH) of the RASC-5HVRNE unit is 13,55 kW. Calculation of fLH: Consulting section “Piping length correction factor”, it can be seen that for the characteristics of our example (piping length of 10 metres and a height difference between the RASC unit and the indoor units of 0 metres) the piping length correction factor for heating mode is 0.998. Calculation of fd: In situations where the ambient temperature is lower than 7 ºC DB, frost may build up on the heat exchanger. In the case, the heating capacity for the unit may be reduced because of the time spent by the unit in removing the build-up. The defrosting correction factor takes this time into account and applies the heating capacity correction. To calculate the correction factor, please see section “Defrost correction factor” which shows a table with different values of fd depending on the ambient temperature (ºC DB). If the correction factor at an ambient temperature of 3 ºC DB does not appear on the table, an interpolation will be needed. Finally, the resulting defrosting correction factor is 0.87. Calculation of QH: Once the correction factors to be applied have been determined, the formula for actual heating capacity of the unit RASC-5HVRNE can be applied:
QH= 13.55 kW x 0.998 x 0.87 = 11.76 kW As can be seen, the actual heating capacity of the unit RASC-5HVRNE (11.76 kW) is greater than the heating load required by the ambient to be conditioned (11 kW). Therefore, the pre-selection will be considered valid both for heating and cooling.
NOTE: If the actual heating capacity calculated is less than that provided by the pre-selected unit, the calculation must be done again with the unit immediately higher.
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4
Capacities and Selection Data
4.2. Combinability The following table shows the possible combinations for RASC-H(V)RNE, as well as the maximum capacity of the single unit and of the system according to the power combination (HP) of the indoor units at a nominal temperature and with a 7.5m piping length. Nominal cooling capacity: 7.1 kW Nominal heating capacity: 8.0 kW
RASC-3HVRNE
Maximum capacity (kW) Combination
Indoor unit combination (HP)
Total
Cooling
Heating Total
Individual
3.0
-
-
-
3.0
8.0
-
-
Twin
1.5
1.5
-
-
3.0
4.0
4.0
-
Total
-
8.0
9.0
-
-
-
9.0
-
8.0
4.5
4.5
-
-
9.0
Nominal cooling capacity: 12.5 kW Nominal heating capacity: 14.0 kW
RASC-5HVRNE
Maximum Capacity (kW) Combination
Indoor unit combination (HP)
Total
Cooling
Heating Total
Individual
5.0
-
-
-
5.0
14.0
-
-
Twin
2.5
2.5
-
-
5.0
7.0
7.0
-
Total
-
14.0
16.0
-
-
-
16.0
-
14.0
8.0
8.0
-
-
16.0
Nominal cooling capacity: 25.0 kW Nominal heating capacity: 28.0 kW
RASC-10HRNE
Maximum capacity (kW) Combination
Indoor unit combination (HP)
Total
Cooling
Heating Total
Total
Individual
10.0
-
-
-
10.0
23.0
-
-
-
23.0
25.0
-
-
-
25.0
Twin
5.0
5.0
-
-
10.0
11.5
11.5
-
-
23.0
12.5
12.5
-
-
25.0
Quad
2.5
2.5
2.5
2.5
10.0
5.75
5.75
5.75
5.75
23.0
6.25
6.25
6.25
6.25
25.0
4.3. Compatibilities Units with the H-LINK system and units with the H-LINK II system and their remote controls can be combined as follows: −− −−
The new RASC-H(V)RNE can be connected with the FSN1(E) and FSN2(E) indoor units The new system H-LINK II enables connection of remote controls, from type PC-P2HTE.
OUTDOOR UNIT
INDOOR UNIT
REMOTE CONTROLS
OLD (PC-2H2) H-LINK
RASC-HNE
FSN(1)(E) CURRENT (PC-P2HTE)
H-LINK II
RASC-H(V)RNE
FSN2(E) NEW (PC-ART)
Compatible Incompatible
NOTE: Refer to the specific controls Technical Catalog for the details of H-LINK.
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Capacities and Selection Data
4.4. Standard cooling and heating capacities Cooling
RASC-10HRNE
RASC-5HVRNE
RASC-3HVRNE
Outdoor unit
Performance Electrical power capacity consumed [kW] [kW]
Indoor unit
Heating EER
Heating COP performance
RCI-3.0FSN2E
7.10
2.45
2.90
C
8.00
2.58
3.10
D
RPC-3.0FSN2E
7.10
2.63
2.70
D
8.00
3.05
2.62
E
RPI-3.0FSN2E
7.10
2.60
2.73
D
8.00
2.99
2.68
E
RCD-3.0FSN2
7.10
2.55
2.78
D
8.00
2.97
2.69
E
RPK-3.0FSN2M
7.10
2.69
2.64
D
8.00
3.05
2.62
E
RCI-1.5FSN2E (x2)
7.10
2.47
2.88
C
8.00
2.58
3.10
D
RCIM-1.5FSN2 (x2)
7.10
2.58
2.75
D
8.00
2.58
3.10
D
RPI-1.5FSN2E (x2)
7.10
2.71
2.62
D
8.00
2.78
2.88
D
RPIM-1.5FSN2E (x2)
7.10
2.71
2.62
D
8.00
2.78
2.88
D
RCD-1.5FSN2 (x2)
7.10
2.52
2.82
C
8.00
2.76
2.90
D
RPK-1.5FSG2M (x2)
7.10
2.65
2.68
D
8.00
2.85
2.81
D
RPF-1.5FSN2E (x2)
7.10
2.68
2.65
D
8.00
2.85
2.81
D
RPFI-1.5FSN2E (x2)
7.10
2.68
2.65
D
8.00
2.85
2.81
D
RCI-5.0FSN2E
12.50
4.61
2.71
-
14.00
4.52
3.10
RPC-5.0FSN2E
12.50
4.75
2.63
-
14.00
4.70
2.98
-
RPI-5.0FSN2E
12.50
4.79
2.61
-
14.00
4.71
2.97
RCD-5.0FSN2
12.50
4.65
2.69
-
14.00
4.65
3.01
RCI-2.5FSN2E (x2)
12.50
4.56
2.74
-
14.00
4.70
2.98
RPC-2.5FSN2E (x2)
12.50
4.79
2.61
-
14.00
4.73
2.96
RPI-2.5FSN2E (x2)
12.50
4.66
2.68
-
14.00
4.73
2.96
RCD-2.5FSN2 (x2)
12.50
4.61
2.71
-
14.00
4.71
2.97
RPK-2.5FSG2M (x2)
12.50
4.68
2.67
-
14.00
4.79
2.92
RPF-2.5FSN2E (x2)
12.50
4.77
2.62
-
14.00
4.83
2.90
RPFI-2.5FSN2E (x2)
12.50
4.77
2.62
-
14.00
4.83
2.90
RPI-10.0FSN2E
23.00
9.54
2.41
-
25.00
9.47
2.64
-
RCI-5.0FSN2E (x2)
23.00
8.49
2.71
-
25.00
8.59
2.91
-
RPC-5.0FSN2E (x2)
23.00
9.50
2.42
-
25.00
9.33
2.65
-
RPI-5.0FSN2E (x2)
23.00
9.43
2.44
-
25.00
9.36
2.67
-
RCD-5.0FSN2 (x2)
23.00
9.16
2.51
-
25.00
8.68
2.88
-
In accordance with EC Directive 2002/31/E of March 2002. Performance class A B C D E F G
Performance Electrical Cooling power performance capacity consumed [kW] [kW]
Multi-Split conditioner Cooling Heating 3.203 3.00≥EER>2.80 2.80≥EER>2.60 2.60≥EER>2.40 2.40≥EER>2.20 2.20≥EER
3.603.40 3.40≥COP>3.20 3.20≥COP>2.80 2.80≥COP>2.60 2.60≥COP>2.40 2.40≥COP
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4
Capacities and Selection Data
4.5. Cooling capacity of the RASC units Indoor air inlet temperature WB(ºC) / (DB(ºC)) RASC unit
RASC-3HVRNE
RASC-5HVRNE
RASC-10HRNE
CR
Outdoor air inlet temperature (DB) (ºC)
15/(21)
17/(24)
19/(26)
20/(28)
21/(29)
23/(31)
CAP Max.
CAP Max.
CAP Max.
CAP Max.
CAP Max.
CAP Max
25
7.50
7.98
8.40
8.60
8.75
9.00
30
7.40
7.88
8.30
8.50
8.65
8.90
35
7.00
7.55
8.00
8.19
8.35
8.60
40
6.25
6.85
7.30
7.48
7.60
7.80
25
12.80
13.75
14.50
14.78
15.00
15.35
30
12.65
13.55
14.25
14.55
14.80
15.20
35
12.25
13.25
14.00
14.30
14.55
14.90
40
11.65
12.60
13.40
14.72
13.95
14.20
25
23.00
24.68
26.00
26.50
26.93
27.51
30
22.75
24.43
25.75
26.25
26.68
27.26
35
22.00
23.65
25.00
25.50
25.90
26.50
40
20.25
21.93
23.25
23.75
24.18
24.76
0.34
0.51
0.88
NOTE: CAP max: Compressor capacity at maximum frequency (kW). CR: Correction ratio due to humidity.
4.6. Heating capacity of the RASC units Indoor air inlet temperature (DB) (ºC) RASC unit
RASC-3HVRNE
RASC-5HVRNE
RASC-10HRNE
Outdoor air inlet temperature (WB) (ºC)
16 CAP Max.
18 CAP Max.
20 CAP Max.
22 CAP Max.
24 CAP Max.
26 CAP Max.
-10 -5 0 5 10 15 -10 -5 0 5 10 15 -10 -5 0 5 10 15
7.30 8.00 8.60 9.00 10.30 11.55 11.10 12.30 14.10 16.10 18.25 20.70 17.38 19.98 22.50 25.98 28.30 29.08
7.15 7.85 8.45 8.90 10.18 11.45 10.90 12.10 13.80 15.90 18.00 20.50 17.18 19.78 22.30 25.80 28.10 28.88
7.00 7.67 8.25 8.80 10.00 11.20 10.65 11.85 13.55 15.70 17.75 20.27 16.90 19.50 22.02 25.51 27.82 28.60
6.80 7.48 8.00 8.65 9.80 10.88 10.40 11.50 13.20 15.45 17.47 20.00 16.50 19.10 21.62 25.10 27.42 28.20
6.58 7.23 7.78 8.50 9.60 10.50 10.10 11.20 12.40 15.20 17.20 19.75 16.02 18.62 21.14 24.60 26.94 27.72
6.37 6.98 7.53 8.30 9.40 10.08 9.80 10.93 12.50 14.95 16.95 19.50 15.45 18.05 20.57 24.07 26.37 27.15
NOTE: CAP max: Compressor capacity at maximum frequency (kW).
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Capacities and Selection Data
4.7. Correction factors 4.7.1. Piping length correction factor
The correction factor is based on the equivalent piping length in meters (EL) and the height between RASC and indoor units in meters (H).
H:
Height between indoor unit and RASC unit (m). −− +H: Position of RASC unit is
higher than position of indoor unit (m).
−− -H: Position of RASC unit is
lower than position of indoor unit (m).
+H
L:
Actual one-way piping length between indoor unit and RASC unit (m).
EL: Equivalent one-way piping length between indoor unit and RASC unit (m). -H
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4
Capacities and Selection Data
¡¡RASC-H(V)RNE
Cooling
RASC-3HVRNE
Cooling capacity: RASC-5HVRNE
The cooling capacity should be corrected according to the following formula: TCA = TC x F
TC: Cooling capacity in the cooling capacity table (kW). F: Correction factor based on the equivalent piping length (in %).
Cooling
TCA: Actual corrected cooling capacity (kW).
Cooling
RASC-10HRNE
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Capacities and Selection Data
¡¡RASC-H(V)RNE
Heating
RASC-3HVRNE
Heating capacity RASC-5HVRNE
The heating capacity should be corrected according to the following formula: THA = TH x F
TH: Heating capacity from heating capacity table (kW). F: Correction factor based on the equivalent piping length (in %).
Heating
THA: Actual corrected heating capacity (kW)
Heating
RASC-10HRNE
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4
Capacities and Selection Data
4.7.2. Defrost correction factor The heating capacity does not include operation during frost or defrosting. When this type of operation is taken in account, the heating capacity must be corrected according to the following equation: Correction heating capacity = correction factor x heating capacity
Ambient temperature (ºC DB) (HR = 85% ) Defrosting correction factor fd
-20
-7
-5
-3
0
3
5
7
0.95
0.95
0.93
0.88
0.85
0.87
0.90
1.00
NOTE: The correction factor is not valid for special conditions such as during snow or operation in a transitional period.
Heating capacity Reduced capacity due to frost build-up Time Max. defrosting 12 min. 1 cycle
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Capacities and Selection Data
4.8. Sensible heat factor (SHF) The sensible heat factor of indoor units at each fan speed (Hi, Me, Lo) based on the JIS Standard B8616, is given below:
Indoor unit model RCI-1.5FSN2E RCI-2.0FSN2E RCI-2.5FSN2E RCI-3.0FSN2E RCI-4.0FSN2E RCI-5.0FSN2E RCI-6.0FSN2E RCIM-1.5FSN2 RCIM-2.0FSN2 RCD-1.5FSN2 RCD-2.0FSN2 RCD-2.5FSN2 RCD-3.0FSN2 RCD-4.0FSN2 RCD-5.0FSN2 RPC-2.0FSN2E RPC-2.5FSN2E RPC-3.0FSN2E RPC-4.0FSN2E RPC-5.0FSN2E RPC-6.0FSN2E RPI-1.5FSN2E RPI-2.0FSN2E RPI-2.5FSN2E RPI-3.0FSN2E RPI-4.0FSN2E RPI-5.0FSN2E RPI-6.0FSN2E RPI-8.0FSN2E RPI-10.0FSN2E RPIM-1.5FSN2E RPK-1.5FSN2M RPK-2.0FSN2M RPK-2.5FSN2M RPK-3.0FSN2M RPK-4.0FSN2M RPF-1.5FSN2E RPF-2.0FSN2E RPF-2.5FSN2E RPFI-1.5FSN2E RPFI-2.0FSN2E RPFI-2.5FSN2E
Hi 0.77 0.78 0.73 0.79 0.78 0.74 0.73 0.74 0.71 0.73 0.75 0.74 0.74 0.73 0.69 0.72 0.72 0.72 0.72 0.72 0.72 0.73 0.76 0.76 0.75 0.73 0.72 0.72 0.77 0.79 0.71 0.73 0.72 0.72 0.71 0.71 0.73 0.73 0.73 0.73 0.73 0.73
page 59 TCGB0043 rev 0 - 07/2009
SHF Med 0.75 0.76 0.71 0.76 0.75 0.70 0.69 0.71 0.68 0.69 0.67 0.67 0.67 0.67 0.67 0.70 0.70 0.70 0.70 0.70 0.70 0.69 0.75 0.74 0.71 0.71 0.68 0.69 0.77 0.79 0.68 0.72 0.72 0.72 0.72 0.72 0.69 0.69 0.69 0.69 0.69 0.69
Low 0.73 0.75 0.69 0.72 0.72 0.68 0.68 0.70 0.67 0.66 0.65 0.65 0.65 0.65 0.65 0.67 0.67 0.67 0.67 0.67 0.67 0.65 0.74 0.72 0.67 0.65 0.64 0.67 0.70 0.72 0.64 0.70 0.70 0.70 0.70 0.70 0.65 0.65 0.65 0.65 0.65 0.65
4
Capacities and Selection Data
4.9. Fan performance RASC unit could be installed using ducts at inlet and outlet air. Refer to fan performance curve, in order to ensure that the air volume is within working range. It’s assumed that unit will be installed using supply and return air ducts. Find below fan performance curve to decide which ducts are suitable
External Static Pressure (mm Aq)
Air flow (m³/min) “●” Nominal Point
RASC-10HRNE
External Static Pressure (mm Aq)
RASC-5HVRNE
External Static Pressure (mm Aq)
RASC-3HVRNE
Air flow (m³/min) “●” Nominal Point
Air flow (m³/min) “●” Nominal Point
NOTE:
−− When design a duct, check to ensure that the Air volume is within working range as indicate “Fan Performance Curve”. −− If the Air volume is set outside working range, water-carry-over (drop in the ceiling or into the room), noise increases, fan motor damaged (high temperature), insufficient Cooling/Heating capacity, phenomena can occur. −− Therefore design ducts and select the correct fan speed in order to keep the unit running in the accepted working range selected.
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Capacities and Selection Data
4.10. Sound data ¡¡ RASC–H(V)RNE units Model: RASC-3HVRNE Measurement point:
Model: RASC-5HVRNE
Power source: 230V 50Hz
1.5 meters beneath the unit (With duct)
Measurement point:
1.5 meters beneath the unit (With duct) Acoustic criteria curve Cool/Heat: 55/56 dB(A)
Octave sound pressure (dB (C))
Octave sound pressure (dB (C))
Acoustic criteria curve Cool/Heat: 46/46 dB(A)
Power source: 230V 50Hz
Approximate continuous noise detection threshold
Approximate continuous noise detection threshold
Frequency (Hz) Model: RASC-10HRNE Measurement point:
4
Power source: 400V 50Hz
1.5 meters beneath the unit (With duct)
Octave sound pressure (dB (C))
Acoustic criteria curve Nominal: 68 dB(A)
Approximate continuous noise detection threshold
Frequency (Hz)
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Frequency (Hz)
Working Range
5. W o r k i n g R a n g e This chapter shows the working range of the Hitachi RASC-H(V)RNE Series.
Contents 5.
Working Range.........................................................................................................63
5.1. Power Supply........................................................................................................................................ 64 5.2. Temperature Range............................................................................................................................... 64
5
page 63 TCGB0043 rev 0 - 07/2009
Working Range
5.1. Power Supply Operating voltage
90% to 110% of the nominal voltage
Voltage imbalance
Within a 3% deviation from each voltage at the main terminal of the outdoor unit
Starting voltage
Higher than 85% of the nominal voltage
Following Council Directive 89/336/EEC and amendments 92/31/EEC and 93/68/EEC, relating to electromagnetic compatibility, the following table indicates maximum permissible system impedance Zmax at the interface point of the user’s power supply, in accordance with EN61000-3-11. MODEL
Zmax (Ω)
RASC-3HVRNE RASC-5HVRNE RASC-10HVRNE
0.26 0.19 0.20
5.2. Temperature Range The temperature range is indicated in the following table:
NOTE: DB: dry bulb; WB: wet bulb
Cooling Operation
Heating Operation
Indoor temperature
Minimum
21°C DB/15°C WB
15°C DB
Maximum
32°C DB/23°C WB
27°C DB
Outdoor temperature
Minimum
-5°C DB
-15°C WB
Maximum
43°C DB
15.5°C WB
Temperature range diagram: Heating Operation
Cooling Operation
Operation control range
Outdoor air temperature (°C WB)
Outdoor air temperature (°C DB)
43
15.5
-15
-5 15 Indoor air inlet temperature (°C WB)
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23
Indoor air inlet temperature (°C DB)
27
Refrigerant Cycle
6. R e f r i g e r a n t C y c l e
This chapter displays the refrigerant cycle diagrams for the units of the Hitachi RASC-H(V)RNE series.
Contents 6.
Refrigerant Cycle......................................................................................................65
6.1. Example of single combination.............................................................................................................. 66 6.2. Example of double combination............................................................................................................ 67 6.4. Example of quadruple combination....................................................................................................... 68
6
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Refrigerant Cycle
6.1. Example of single combination
RASC-3HVRNE
Cooling Refrigerant
Heating Refrigerant
Installation Refrigerant
Flow
Flow
Piping Line
Nº
Name of Item
Flare Nut Connectiion
Flange Connection
Nº
Name of Item
1
Compressor
12
Stop valve for gas line
2
Heat exchanger
13
High pressure switch for protection
3
Liquid tank
14
Pressure switch for control
4
Strainer
15
Ambient thermistor
5
Distributor
16
Condenser pipe thermistor
6
Revercing valve
17
Discharge gas thermistor
7
Capilary tube
18
Indoor exchanger
8
Electronic expansion valve
19
Strainer
9
Solenoid valve
20
Electronic expansion valve
10
Check joint
21
Distributor
11
Stop valve for liquid line
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Brazing Connection
Refrigerant Cycle
6.2. Example of double combination
RASC-5HVRNE
6
Cooling Refrigerant
Heating Refrigerant
Installation Refrigerant
Flow
Flow
Piping Line
Nº
Name of Item
Flare Nut Connectiion
Flange Connection
Nº
Name of Item
1
Compressor
13
High pressure switch for protection
2
Heat exchanger
14
Pressure switch for control
3
Liquid tank
15
Ambient thermistor
4
Strainer
16
Condenser pipe thermistor
5
Distributor
17
Discharge gas thermistor
6
Revercing valve
18
Multikit (Liquid line)
7
Capilary tube
19
Multikit (Gas line)
8
Electronic expansion valve
20
Indoor exchanger
9
Solenoid valve
21
Strainer
10
Check joint
22
Electronic expansion valve
11
Stop valve for liquid line
23
Distributor
12
Stop valve for gas line
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Brazing Connection
Refrigerant Cycle
6.4. Example of quadruple combination
RASC-10HRNE
Cooling Refrigerant
Heating Refrigerant
Installation Refrigerant
Flow
Flow
Piping Line
Nº
Name of Item
Flare Nut Connectiion
Flange Connection
Nº
Name of Item
1
Compressor
13
Stop valve for gas line
2
Heat exchanger
14
High pressure switch for protection
3
Liquid tank
15
Pressure switch for control
4
Strainer
16
Ambient thermistor
5
Oil separator
17
Condenser pipe thermistor
6
Revercing valve
18
Discharge gas thermistor
7
Capilary tube
19
Multikit (Liquid line)
8
Solenoid valve
20
Multikit (Gas line)
9
Electronic expansion valve
21
Indoor exchanger
10
Check valve
22
Strainer
11
Cheack joint
23
Electronic expansion valve
12
Stop valve for liquid line
24
Distributor
* SVF: Oil return, SVA2: Gas by-pass
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Brazing Connection
Piping and Refrigerant charge
7. P i p i n g a n d r e f r i g e r a n t c h a r g e
This chapter describes how to connect the refrigerant piping and change the amount of refrigerant in the system for the Hitachi RASC series.
Contents 7.
Piping and refrigerant charge...............................................................69
7.1. Refrigerant piping..........................................................................................................70 7.1.1. Refrigerant piping range........................................................................................................70 7.1.2. Refrigerant piping length.......................................................................................................70 7.1.3. Refrigerant piping selection .................................................................................................71
7.2. Multi-kits and distributors...............................................................................................72 7.2.1. Size data...............................................................................................................................72 7.2.2. Twin and quadruple system installation................................................................................73 7.2.3. Piping materials.....................................................................................................................74
7.3. Amount refrigerant charge.............................................................................................76 7.3.1. Additional refrigerant charge calculation (R410A).................................................................76 7.3.2. Simple example of refrigerant charge quantity calculation ..................................................78
7
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Piping and Refrigerant charge
7.1. Refrigerant piping 7.1.1. Refrigerant piping range The piping selection and the distribution must be designed according to the following specifications:
Example of single and twin systems Single system
Twin system
+H
+H
-H
Item
NOTES: - The liquid piping and the gas piping must be of the same length and run along the same route. - Multi-kits for multiple connections (optional accessory as system parts) must be used to install the branch pipe to the indoor unit. - Install multi-kits at the same horizontal level.
Actual length between RASC and the farthest I.U.
-H
Applicable range
RASC-3HVRNE
RASC-(5/10)H(V)RNE
30
50
45
70
Single: L Twin: C + (A or B)
Equivalent length between RASC and the farthest I.U.
Single: Leq
Lift between I.U. and RASC: H (m)
RASC is higher: +H (m)
Twin: (C + (A or B))eq
30 20 0.5
RASC is lower: -H (m)
Lift between I.U. (m)
7.1.2. Refrigerant piping length The refrigerant piping length between indoor units and outdoor units must be designed using the following chart. Maintain the design point within the dark area of the chart, which shows the height difference according to the piping length. RASC-3HVRNE
RASC-(5/10)H(V)RNE
When outdoor unit is installed higher than indoor unit
When outdoor unit is installed higher than indoor unit
When outdoor unit is installed lower than indoor unit
When outdoor unit is installed lower than indoor unit
(0-5 m)
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Setting before shipment
(0-5 m)
Setting before shipment
(30-50 m)
Piping and Refrigerant charge
7.1.3. Refrigerant piping selection Select the piping connection sizes according to the following procedures:
Between RASC unit and branch pipe:
Select the same pipe connection size as the pipe size of the RASC unit
Between branch pipe and indoor unit:
Select the same pipe connection size as the pipe size of the indoor unit
¡¡ Between RASC unit and branch pipe Distributor
Unit
Gas piping size (mm/(in.))
Liquid piping size (mm/(in.))
Twin
Quad
RASC-3HVRNE
15.88 (5/8”)
9.53 (3/8”)
TE-03N
-
RASC-5HVRNE
15.88 (5/8”)
9.53 (3/8”)
TE-56N
-
RASC-10HRNE
25.4 (1”)
12.7 (1/2”)
TE-10N
QE-810N
For RASC-10HRNE units, use a reducer pipe in the following installations:
Installation Distributor type Øb
Øa
Single
-
Quad
QE-810N
Pipe Reducer Type Gas
25.4 (1”)
22.2 (7/8”)
12.7 (1/2”)
9.53 (3/8”)
Liquid
12.7 (1/2”)
9.53 (3/8”)
The piping size for indoor unit are as follows: Indoor unit (HP)
Gas piping size Ø (mm/(in.))
Liquid piping size Ø (mm/(in.))
1.5
12.7 (1/2”)
6.35 (1/4”)
3.0
15.88 (5/8”)
5.0 10.0
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22.2 (7/8”)
9.53 (3/8”)
Øb (mm/(in.))
Liquid
¡¡ Between branch pipe and indoor unit
2.5
Øa (mm/(in.))
7
Piping and Refrigerant charge
7.2. Multi-kits and distributors 7.2.1. Size data ¡¡ Multi-kits for twin Installation LIQUID PIPING
TE-10N
TE-56N
TE-03N
GAS PIPING
¡¡ Multi-kits for quadruple installation
QE-810N
GAS PIPING
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LIQUID PIPING
Piping and Refrigerant charge
7.2.2. Twin and quadruple system installation
Height difference between indoor units and distributor Install all indoor units at the same height. When the height difference between the indoor units due to building construction is necessary, this should be less than 0,5 meters. Install the branch pipe at the same height of indoor units or lower, but never higher. Sample: Twin system Height difference between two indoors. Smaller than 0.5m Indoor units
Branch pipe
Smaller than 0.5 mm
Installing distributor 1. Install the distributor supplied by HITACHI on request A tee can not be installed instead of a branch pipe. Sample: Twin system
2. Installing the distributor. Fix the branch pipe horizontally to the pillar, wall or ceiling. Piping must not be fixed rigidly to the wall as thermal expansion and contraction can cause pipe fracture. Sample: Twin system
To indoor unit
Horizontal
Vertical
Horizontal
To indoor unit
Horizontal
Fixing the branch pipie to the surface of pillar or wall
To RASC unit
Fixing the branch pipe to ceiling or beam
NOTE:
Fix the piping from outside of insulation or inserting absorber between the pipe and a fixing metal.
3. Correct position of twin distributor
This is the correct position of twin Branch pipe: Up
Greater than 0.5m
Refrigerant direction Main Pipe Refrigerant direction Down
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Main Pipe Branch pipe
7
Piping and Refrigerant charge
This is wrong position. Up Main Pipe
Main Pipe Refrigerant direction Branch pipe
Branch pipe
Branch pipe
Down
4. Correct position of Quad Distributor.
Install the header horizontally
Sample: Quad Branch pipe Gas piping
Liquid piping
7.2.3. Piping materials 1. Prepare locally-supplied copper pipes. 2. Select the correct pipe size and material. Use the table below to select the required piping.
NOTE: If copper pipe is used for piping bigger than Ø19.05 flaring work can not be performed. If necessary, use a joint adapter.
Nominal Diameter (mm)
(in.)
6.35 9.53 12.70 15.88 19.05 22.23 25.40
1/4 3/8 1/2 5/8 3/4 7/8 1
Thickness (mm)
Copper Type
0.80 0.80 0.80 1.00 1.00 1.00 1.00
Roll Roll Pipe/Roll Roll Pipe/Roll Pipe/Roll Pipe
3. Select clean copper pipes. Make sure there is no dust and moisture inside. Blow the inside of the pipes through with oxygen-free nitrogen to remove any dust and foreign materials before connecting pipes. 4. After connecting the refrigerant piping, seal the open space between the knockout hole and refrigerant pipes by using insulation material as shown below:
CAUTION: Do not use saws. grindstones or other tools which might create copper dust.
Insulator Field-supplied refrigeration piping
Insulator
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Insulator
Piping and Refrigerant charge
¡¡ Piping connections Fix the connecting pipe as shown in the figure below. Use the insulation attached to the indoor unit. Use the flare nut of the indoor unit
Insulate this part with the insulation material supplied
Fix this part with the bracket supplied or with tape Refrigerant piping in the installation
NOTE: A system with no moisture or oil contamination will give maximum performance and life-cycle as compared with a poorly prepared system.
Indoor unit
Insulation attached to indoor unit
Solder Make flares after attaching flare nut to the connecting pipe in the Multikit package
Field-supplied insulation
−−
Cap the end of the pipe when the pipe is to be inserted through a hole.
−−
Do not place pipes directly on the ground without a cap or vinyl tape covering the end. Right
Wrong
7 −−
If piping installation cannot be completed until the following day or longer, solder the ends of the piping to close them and load with oxygen-free nitrogen using an access device such as a Schrader valve to avoid moisture and contamination by extraneous particles.
−−
Do not use insulation material containing NH3 as it can damage the copper piping material and may be a source of future leakage.
¡¡ Insulation
NOTE: When polyethylene foam is applied. a thickness of 10mm for the liquid piping and 15mm to 20mm for the gas piping is recommended.
Attach insulation package with the Multikit to each branch using vinyl tape. Also attach insulation to field-supplied piping to prevent capacity decrease due to ambient air conditions and dewing on pipe surface caused by low pressure.
CAUTION: Perform insulation work when the surface temperature reaches the room temperature. Otherwise it is possible that the insulation will melt. If the ends of the piping system are open after accomplishing piping work. securely attach caps or vinyl bags to the ends of the piping. avoiding the invasion of moisture and dust.
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Piping and Refrigerant charge
7.3. Refrigerant charge amount 7.3.1. Additional refrigerant charge calculation (R410A) Although refrigerant has been charged into this unit, additional refrigerant charge is required according to piping length. −− The additional refrigerant quantity should be determined and charged into the system according to the following procedure. −− Record the additional refrigerant quantity in order to facilitate maintenance and servicing activities.
¡¡ Calculating method of additional refrigerant charge (W kg) Calculate the additional refrigerant charge amount according to the following steps:
Step 1:
Additional refrigerant charge calculation for liquid piping (W1 (kg)) Calculate W1 by the following formula: W1= (AL-l) x p AL: Piping length (m) l: Charge-less piping length (m) p: Compensation rate (kg/m) * This values are shown below Single system
Twin system
RASC-(3/5/10)H(V)RNE
RASC-(3/5/10)H(V)RNE
AL
Indoor unit
Indoor unit
AL: Piping length (m)
RASC MODEL
AL: A+B+C = Piping length (m)
l p Charge-less length Compensating rate (m) (kg/m)
RASC-3HVRNE
20
0.06
RASC-5HVRNE
30
0.06
RASC-10HRNE
30
0.12
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Indoor unit
Piping and Refrigerant charge
Step 2:
- Charging work Charge refrigerant (R410A) into the system according to the instructions described in the "Service Manual". - Record of additional charge The total refrigerant charge of this system is calculated with the following formula: Total refrigerant charge: W= W 0+ W1
This system =
NOTE:
When the additional refrigerant charge is over the maximum additional refrigerant charge allowed by the unit, it's necessary to adjust the piping length of the installation.
+
=
kg
W0 is the outdoor unit refrigerant charge before shipment, and it's shown in the following table: Model
W0 RASC unit refrigerant charge (kg)
RASC-3HVRNE
2.8
RASC-5HVRNE
4.0
RASC-10HRNE
9.0
CAUTION:
In case of the actual piping length is less than 5 m, total refrigerant quantity should be according to the below table: Model
Refrigerant quantity (kg)
RASC-3HVRNE
2.3
RASC-5HVRNE
3.3
RASC-10HRNE
7.4
7
Record the refrigerant charge quantity in order to facilitate maintenance and servicing activities.
Total additional charge W
kg
Total Ref. charge
kg
Date of ref. charge work
/
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/
Piping and Refrigerant charge
7.3.2. Simple example of refrigerant charge quantity calculation
AL: 45m RASC-5HVRNE
l: 30m
RCI-5.0FSN2E
Step 1:
Additional refrigerant charge calculation for liquid piping (W1 (kg)) W1= (AL-l) x p = (45-30) x 0.06 = 0.9 kg
Step 2:
Calculation of total additional refrigerant charge (W (kg))
W1= 0.9 + 0 = 0.9 kg
Step 3:
Calculation of total refrigerant charge (WTOT (kg)) WTOT= W1+ W0 = 0.9 + 4.0 = 4.9 kg
7.4. Caution in case of refrigerant leakage The installers and those responsible for drafting the specifications are obliged to comply with local safety codes and regulations in the case of refrigerant leakage.
7.4.1. Maximum permitted concentration of HFCs The refrigerant R410A, charged in the RASC series system, is an incombustible and non-toxic gas. However, if leakage occurs and gas fills a room, it may cause suffocation. The maximum permissible concentration of HFC gas, R410A in air is 0.44 kg/m³, according to EN378-1. Therefore, some effective measure must be taken to lower the R410A concentration in air below 0.44 kg/ m³, in case of leakage.
7.4.2. Calculation of refrigerant concentration 1. Calculate the total quantity of refrigerant R (kg) charged in the system by connecting all the indoor units in the rooms to be air-conditioned. 2. Calculate the room volume V (m³) of each room. 3. Calculate the refrigerant concentration C (kg/m³) of the room according to the following equation: R —=C V
R: Total quantity of refrigerant charged (kg) V: Room volume (m³) C: Refrigerant concentration (=0.44* kg/m³ for R410A)
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Piping and Refrigerant charge
7.4.3. Countermeasure for refrigerant leakage The facility must have the following features in case of a refrigerant leakage occurs: 1. Provide a shutterless opening which will allow fresh air to circulate into the room. 2. Provide a doorless opening of 0.15% or more size to the floor area. 3. There must be a ventilator fan connected to a gas leak detector, with a ventilator capacity of 0.4 m³/min or higher per Japanese refrigeration ton (= compressor displacement volume/5.7m³/h) of the air conditioning system using the refrigerant. Model
Tonnes
RASC-3HVRNE
1.67
RASC-5HVRNE
2.27
RASC-10HRNE
4.11
4. Pay a special attention to the place, such as a basement, etc., where refrigerant can stay, since refrigerant is heavier than air.
¡¡General example of application System A Outdoor unit
System B Outdoor unit System B Refrigerant: 50 kg
System A Refrigerant: 60 kg
Height 2.5 m Floor 40 m2
Floor 50 m2
Gas leak detector
Floor 50 m2
Floor 400 m2
Floor 120 m2
Opening: 0.075 m2
Fan: 2 m3/min
Room
R (kg)
V (m3)
C (kg/m3)
Countermeasure
A
50
300
0.17
-
B
110
1,000
0.11
-
C
60
125
0.48
0.075 m2 opening
D
60
125
0.48
0.075 m2 opening
C+D
60
350
0.17
-
E
60
100
0.6
2 m /min. fan linked with gas leak detector
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3
7
Electrical Data
8. E l e c t r i c a l D a t a This chapter describes the electrical requirements for each unit of the Hitachi RASC-H(V)RNE series.
Contents 8.
Electrical Data..........................................................................................................81
8.1. Electrical data for RASC-H(V)RNE........................................................................................................ 82 8.1.1. RASC-(3/5/10)H(V)RNE................................................................................................................................... 82
8
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Electrical Data.
8.1. Electrical data for RASC-H(V)RNE
8.1.1. RASC-(3/5/10)H(V)RNE
Unit Power Source
Applicable Voltage
Compressor and Fan Motors
Model
RASC-3HVRNE RASC-5HVRNE RASC-10HRNE
U [V]
PH
f [Hz]
U max. [V]
U min [V]
PH
STC [A]
230 230 400
1 1 3
50 50 50
253 253 440
207 207 360
1 1 3
-
Cooling Operation
Heating Operation
IPT [KW]
RNC [A]
IPT [KW]
RNC [A]
2.47 2.65 8.60
11.3 22.0 20.1
2.60 4.56 8.70
11.9 21.6 20.2
Max. IPT Max. Cur. [kW] [A]
6.33 8.76 15.07
28.0 37.0 33.0
NOTES: U:
Power voltage
PH:
Phase (φ)
f:
Frequency
1. The compressor data shown in the table above are based on a combined capacity of 100% of the power supplied, with the following working frequency:
RASC-3HVRNE RASC-5HVRNE RASC-10HRNE
STC: Starting current RNC: Operating current
Cool
Heat
46 64 74
54 67 83
2. The above performance data are based on an equivalent piping length of 7.5m and 0m piping lift
IPT: Total input power Cur: Current
3. This data is based on the same conditions of nominal heating and cooling capacities. The compressor with inverter control has low electrical power consumption at start-up 4. The specifications in these tables are subject to change without notice to allow HITACHI to offer its customers the latest innovations.
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Electrical Wiring
9. E l e c t r i c a l W i r i n g
This chapter describes the electrical wiring connections and how to set the dip switches and the H‑Link II System of the Hitachi RASC-H(V)RNE Series.
Contents 9.
Electrical Wiring....................................................................................83
9.1
General Check..............................................................................................................84
9.2. Setting and Function of DIP Switches for RASC units..................................................85 9.3. Common Wiring.............................................................................................................87 9.3.1. Electrical Wiring between Indoor and RASC units................................................................87
9.4. Wiring Size....................................................................................................................88
9
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Electrical Wiring
9.1 General Check
WARNING: – Turn OFF the main power switch on the indoor and outdoor units before carrying out electrical wiring or regular checks. – Check to ensure that the indoor fan and the outdoor fan have stopped before electrical wiring work or a periodical check is performed. – Protect wires, drain pipe, electrical parts, etc. from rats or other small animals. If all these parts are not protected, rats or other small animals may gnaw at them and possibly cause a fire. – Make sure the wires are not touching the refrigerant pipes, plate edges and electricalparts on the inside of the unit. Otherwise the wires will be damaged and may cause a fire. – Secure the wires firmly with the clamp to the inside of the indoor unit.
NOTE: Fix the rubber bushes with adhesive when the outdoor unit ducts are not used. 1. Make sure that the field-supplied electrical components (main power switches, circuit breakers, wires, duct connectors and wire terminals) have been properly selected according to the electrical data in this technical catalog. Make sure that the components comply with the National Electrical Code (NEC). 2. Check to ensure that the power supply voltage is within ± 10% of the rated voltage. 3. Check the capacity of the electrical wiring. If the power source capacity is too low, the system cannot be started due to voltage drop. 4. Check to ensure that the earth wire is connected. 5. Main power source switch Install a multi-pole main switch with a space of 3.5mm or more between each phase.
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Electrical Wiring
9.2. Setting and Function of DIP Switches for RASC units
Number and position of DIP switches. The PCB in the outdoor unit operates with 6 types of DIP switches, 6 cut-off switches and 3 types of push-switches. Position of DIP switches:
NOTE: The “■” mark indicates the position of the DIP switches. The figures show the settings before shipment or after selection. When using DSW1 the unit starts up or stops 10 to 20 seconds after the switch is operated.
WARNING Turn off power source before setting DIP switches. If the switches are set without turning off the power source, the settings are invalid. −−
DSW1: Test run. Factory setting is all OFF
Before shipment
Test Run for cooling
Test Run for heating
Enforced compressor OFF
−−
Continuous operation during 2 hours is performed without thermo OFF. The 3 minutes guard for compressor protection is not effective during the test run operation.
Compressor operation is OFF during the operation.
DSW2: Pipe length/ Selection of optional functions.
Before shipment
Piping Length (0~5 m)
Initial expansion valve opening is changed according to the piping.
Piping Length (More than 30 m)
External input/output selection is set.
Function selection setting
Function selection is set by PSW.
External input/output selection
External input/output selection is set by PSW.
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9
Electrical Wiring
−−
DSW3: Setting capacity.
RASC-3HVRNE
RASC-5HVRNE
No. setting is required
RASC-10HRNE
−−
DSW4 and RSW1: Setting number of refrigerant cycles.
Setting for the tenth digit
NOTE:
If JP1 is activated, the individual control of each indoor unit cannot be used.
Setting for the last digit
−−
DSW5: Setting of end-terminal resistance. No setting is required. However, to ensure the impedance corresponds, set the DSW5 according to the number of outdoor units of the H-link system.
Setting before shipment End resistance is ON
−−
No setting is required. In case of having 2 or more outdoor units connected to the same H-LINK, set for the second unit the pin number 1 of DSW5 at OFF.
DSW6: Selection of electrical power supply. No setting is required. Setting before shipment 400V (RASC-10HRNE) No setting is required. Single phase operation 230V (RASC-3/5HVRNE)
JP1 cut: Increase in temperature range in Cooling up to -15ºC JP4 cut: Fixing cooling mode JP5 cut: Alternative defrosting JP6 cut: High-pressure control based on R407C piping
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Electrical Wiring
9.3. Common Wiring 9.3.1. Electrical Wiring between Indoor and RASC units Connect the electrical wires between the indoor unit and the RASC unit, as shown below. Check to ensure that the terminal for power source wiring (terminals “L1” to “L1” and “N” to “N” of each terminal board: AC230V), and intermediate wires (Operating Line: terminals “1” to “1” and “2” to “2” of each terminal board: DC5V) between the indoor unit and the RASC unit coincide correctly. If not, some component will be damaged. ---
--
-------
Follow local codes and regulations when performing electrical wiring. Connect the operation wiring to the units in the same refrigerant cycle (The refrigerant piping and the control wiring should be connected to the same indoor units). If the refrigerant piping ant the control wiring are connected to the units in the different refrigerant cycle, it may cause a abnormal operation. Use twist pair wire (more than 0.75 mm²) for operation wiring between RASC unit and indoor unit, and operation wiring between indoor units (H-Link connection). It can be also used shielded pair wiring. Shield shall be connected to earth only in one cable side. Use shielded wires for intermediate wiring to protect the units from noise obstacle at length of less than 300 m and size complied with local code. Do not use more than 3 cores for operation wiring (H-Link). Core sizes must be selected according to the national regulations. Open a hole near the connection hole of power source wiring when multiple RASC units are connected from one power source line. The recommended breaker sizes are shown in Table of electrical data and recommended Wiring, Breaker Size/1 O.U. In the case that a conduit tube for field-wiring is not used, fix rubber bushes with adhesive on the panel. All the field wiring and equipment must comply with local and international codes.
CAUTION:
All the field wiring and electrical components must comply with local codes.
ATTENTION:
Pay attention to the connection of the operating line. Incorrect connection may cause the failure of PCB.
¡¡ RASC-3/5HVRNE Power source from the outdoor unit to the indoor unit Outdoor unit of system no. 0
Independent power source of outdoor unit and indoor unit Outdoor unit of system no. 0 Operating line (twisted shielded pair cable or shielded pair cable)
Operating line (twisted shielded pair cable or shielded pair cable)
DC5V (non-pole transmission, H-Link system).
DC5V (non-pole transmission, H-LINK system)
Indoor unit
Indoor unit Remote control switch
In RASC-3HVRNE: Max. 2 indoor units per refrigerant cycle Terminal board In RASC-5HVRNE: Max. 3 indoor units per refrigerant cycle Circuit breaker Earth leakage breaker Field wiring Field-supplied Optional accessory
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Indoor unit
Indoor unit Remote control switch
In RASC-3HVRNE: Max. 2 indoor units per refrigerant cycle In RASC-5HVRNE: Max. 3 indoor units per refrigerant cycle
9
Electrical Wiring
¡¡ RASC-10HRNE Power source from the outdoor unit to the indoor unit
Independent power source of outdoor unit and indoor unit Outdoor unit of system no. 0
Outdoor unit of system no. 0
3 N
3 N
Operating line (twisted shielded pair cable or shielded pair cable)
Operating line (twisted shielded pair cable or shielded pair cable)
DC5V (non-pole transmission, H-Link system).
DC5V (non-pole transmission, H-LINK system)
Indoor unit
Indoor unit
Indoor unit Remote control switch
Indoor unit Remote control switch
Max. 4 indoor units per refrigerant cycle
Max. 4 indoor units per refrigerant cycle
Terminal board Circuit breaker Earth leakage breaker Field wiring Field-supplied Optional accessory
9.4. Wiring Size
Recomended minimum sizes for field provided wires: Model All Indoor Units(*) RPI-8/10 RASC-3HVRNE RASC-5HVRNE RASC-10HRNE
Power Source Cable Size
Power Source
Max. Current
1~ 230V 50Hz
5A 10 A
EN60 335-1 0.75 mm² 1.5 mm2
1~ 230V 50Hz 1~ 230V 50Hz 3N~ 400V 50Hz
28 A 37 A 33 A
6 mm² 10 mm² 10 mm²
MLFC 0.5 mm² 0.75 mm² 3.5 mm² 5.5 mm² 5.5 mm²
Transmitting Cable Size EN60 335-1
MLFC
0.75 mm²
0.5 mm²
(*) Except RPI-8/10
-- The above wire sizes marked with are selected by 125% of the maximum current of the unit according to the European Standard, EN60 335-1. -- The above wire sizes marked with are selected by 125% of the maximum current of the unit according to the wire, MLFC (Flame Retardant Polyflex Wire) manufactured by HITACHI Cable Ltd. Japan.
page 88 TCGB0043 rev 0 - 07/2009
Electrical Wiring
In case that the power cables are connected in series, add each unit maximum current and select according to the next table: Selection according to EN60 335-1 Current i (A) I≤6 6 < i ≤ 10 10 < i ≤ 16 16 < i ≤ 25 25 < i ≤ 32 32 < i ≤ 40 40 < i ≤ 63 63 < i
Wire Size (mm²) 0.75 1 1.5 2.5 4 6 10
Selection according to MLFC (at cable Temp. Of 60 ºC) Current i (A) Wire Size (mm²) I ≤ 15 0.5 15 < i ≤ 18 0.75 18 < i ≤ 24 1.25 24 < i ≤ 34 2 34 < i ≤ 47 3.5 47 < i ≤ 62 5.5 62 < i ≤ 78 8 78 < i ≤ 112 14 112 < i ≤ 147 22
In case that current exceeds 63 A do not connect cables in series
NOTE:
-- Follow local codes and regulations when selecting field wires, Circuit breakers and Earth Leakage breakers -- Use the wires which are not lighter than the ordinary polychloroprene sheathed flexible cord (code designation H05RN-F) -- The earth cable size must comply with local regulation: IEC 245, no. 571.
CAUTION
-- Use shielded wires for transmission between indoor and outdoor units, and connect the shielded part to the earth screw in the electrical box of the indoor unit as shown below.
Select the main switches in according to the next table: Model
Power Source
All Indoor Units (*) 1~230V 50Hz RPI-8/10 1~230V 50Hz RASC-3HVRNE 1~230V 50Hz RASC-5HVRNE RASC-10HRNE 3N~ 400V 50Hz
Max. Current
CB
5A 10A 28A 37A 33A
6A 10A 40A 50A 40A
ELB: Earth switch; CB: Switch; (*) Except RPI-8/10HP
page 89 TCGB0043 rev 0 - 07/2009
ELB (no. poles/A/ mA) 2/40/30 2/63/30 4/40/30
9
Optional Functions Available
10. O p t i o n a l F u n c t i o n s A v a i l a b l e This chapter gives a brief explanation of the optional functions available for the new HITACHI RASC-H(V)RNE series.
Contents 10. Optional Functions Available....................................................................................91 10.1. Optional functions available for outdoor units....................................................................................... 92 10.2. Optional functions available from remote controllers............................................................................ 93
10
page 91 TCGB0043 rev 0 - 07/2009
Optional Functions Available
10.1. Optional functions available for outdoor units Optional Functions Optional Function
Explanation
Setting for the energy saving request function.
This function regulates the outdoor unit consumption to 50%, 70% or 100%. If the required power is above the set value, the capacity of the indoor unit will be reduced proportionally to the power consumption of the outdoor unit. It can even come to a thermostatic stop if necessary. This function can be configured using an external or internal signal, depending on the needs of the installation. Configuration by external signal is very useful for setting up groups of outdoor units. The internal signal is useful for setting up a single outdoor unit.
Thermo stop order.
When this function is activated the compressor is stopped and the indoor units are on thermo OFF.
Low speed defrost adjustment.
When this function is activated the indoor fan speed at defrost mode changes to slow instead of stopping the fan.
Low noise setting
This function decreases the sound levels of the outdoor units by reducing the maximum working frequency of the compressor (Cooling/Heating).
Night mode (low noise) operation
This function reduces the sound level of the outdoor units by decreasing the maximum working frequency of the compressor and the fan airflow according to the outside temperature (only for cooling mode).
Change of defrost operation conditions
This function changes the defrosting operation conditions. It is particularly useful for cold areas.
Frequency setting
Configuration not available
Protection against cold air discharge (1)
When the air discharge temperature of the indoor unit is less than or equal to 10ºC in cooling mode, the fans stop and the frequency of the outdoor unit is reduced, thereby preventing any discomfort to the occupants of the room.
Protection against cold air discharge (2)
When the discharge temperature of the air in the indoor unit is less than or equal to 10ºC in cooling mode, the compressor stops and alarm no. 24 appears.
Wave function setting
This function controls the outdoor unit consumption in the following way: It allows a consumption of 100% for 20 minutes. The following 10 minutes it goes down to 70% and the alternates between 100% and 70%.
Indoor unit energy-saving This function reduces the power consumption of the indoor unit according to temperature setting the temperature. Piping for the R407C
If you use conventional R407C piping instead of the R410A, the piping pressure will increase. This function is activated in order to avoid this pressure increase.
Alternation of the defrost mode activation
This function is useful in an installation consisting of various outdoor units placed in the same H-LINK. The defrost mode is activated alternately in each outdoor unit.
New temperature margin in cooling mode.
This function changes the minimum temperature value of the operating range in cooling mode from -5ºC to -15ºC (DB). (only for RASC-10HRNE) units
Setting the cooling mode
This function sets the cooling mode: the indoor unit will only start when the system is on COOL or DRY.
Available Not available
page 92 TCGB0043 rev 0 - 07/2009
Optional Functions Available
10.2. Optional functions available from remote controllers Item
Optional Functions
Removal of heating temperature calibration
Circulation function with heating thermo OFF
Enforced 3-minute minimum compressor operation time
Change of filter cleaning time
Setting the operation mode
Establishing the set temperature
Setting operation as an exclusive cooling unit
Automatic COOL/HEAT operation
Setting the air volume
A
Not prepared
bb
Contents
Not prepared
bd
Not prepared
be
Not prepared
Not prepared
Not prepared
Not prepared
Drain pump in heating mode
00
Not available
01
Available
02
Available
00
Not available
01
Available
00
Not available
01
Available
00
Standard
01
100 hours
02
1200 hours
03
2500 hours
04
No indication
00
Not available
01
Available
00
Not available
01
Available
00
Not available
01
Available
00
Not available
01
Available Not available Available
“- -” Set
Not used
00
Standard
01
Temperature setting -1ºC
02
Temperature setting -2ºC
Static pressure selection
Increase in fan speed (RCI, RCIM, RCD)
page 93 TCGB0043 rev 0 - 07/2009
This function is used to eliminate the 4ºC temperature shift.
This function is used to prevent stratification of air. This function is used to protect the compressor when it is started and stopped frequently. Using this function it is possible to alter the time at which the remote controller indicates that the air filter needs to be changed.
00
This function eliminates the possibility of changing operation mode. This function eliminates the possibility of changing the set temperature. This function eliminates the heating mode. This function changes automatically from Cool to Heat operation. This function eliminates the possibility of changing the fan speed. -
00
Not used
01
Used as 00 conditions
00 01
Not used Used as 00 conditions
-
Description
This function is used to eliminate the 2ºC temperature shift.
01
Compensation of cooling temperature
bc
Setting Condition
-
00
Not available
01
Available
00
Medium static pressure (factory settings)
01
High static pressure
02
Low static pressure
00
Normal
01
Speed increase 1
02
Speed increase 2
This function is used to lower the set temperature. Very useful for rooms with more than one unit and windows facing in different directions. -
This function is used to activate the drain pump in heating mode. This function is used to change the static pressure levels on the RPI units from the remote controller.
This function is used to change the fan speed for high ceilings.
10
Optional Functions Available
Item
Optional Functions
Contents
Setting Condition
High speed with heating thermo OFF
00
Not available
01
Available
Cancelling enforced 3-minute minimum compressor operation time
00
Not available
01
Available
00
Control using indoor suction thermistor
01
Control using the remote control thermistor
02
Control using average value of the indoor suction thermistor and the remote control thermistor
Remote control switch thermistor
Description This function is used to increase the fan speed when the thermostat is OFF. This function is used to cancel the “enforced 3 minutes minimum compressor operation time”.
This function is used to control the unit with the remote control thermistor.
Not prepared
-
-
-
Not prepared
-
-
-
Not prepared
d
Not prepared
E
Not prepared
Forced stoppage input at contact A
01
Forced stoppage input at contact B
Selection of forced stoppage logic
F
00
-
Change in angle of louver position
-
00
Standard
01
Cold currents
02
High ceilings
00
Not available
01
Available
Power supply 1 ON/OFF Not prepared
-
-
00
Not available
01
Available
Power supply 2 ON/OFF
4
Prevention of fall in heat discharge air temperature.
5
Prevention of fall in heat discharge air temperature.
6
Control of ambient temperature for energy saving
7
Not prepared
00
Not available
01
Available
00
Not available
01
Available
00
Not available
01
Available
-
(Econofresh) Outdoor cooling operation
00 01, 02
(KPI) Ventilation mode
page 94 TCGB0043 rev 0 - 07/2009
Not available Available
00
Automatic ventilation
01
Ventilation with heat exchanger
02
Ventilation with heat exchanger
This function is used to select the forced stoppage logic. -
7 positions. 5 positions, the 2 positions with vertical louver disappear. 5 positions, the 2 positions with horizontal louver disappear. This function retains the unit's settings if the power supply is interrupted. The unit will restart when power is restored. This function retains the unit's settings if the power supply is interrupted. The unit will restart when power is restored if the unit was ON before the power failure. This function enables you to open the outdoor air damper.
This function is used to set the ventilation mode of the total heat exchanger.
Optional Functions Available
Item
Optional Functions
Contents
Econofresh) Enthalpy sensor (KPI) Increase in air supply volume
Not prepared
6
00
Not available
01
Available
9
Not prepared
Standard
01
30 minutes
02
60 minutes
Not prepared
Ventilator operation control with cooling thermo OFF
EC
Forced stoppage of thermostat ON in cooling mode
Ed
Not prepared
EE
Automatic fan speed control
Not available
00
Ventilator operating time after stoppage of cooling operation
Ventilator operation control with heating thermo OFF
Available
-
8
Available
01, 02
Not prepared
Not prepared
Eb
Not available
01
00
(KPI) Previous cooling/heating period
7
EA
00
-
(Econofresh) Gas sensor
Setting Condition
Automatic OFF setting of timer
00
Description This function sets the enthalpy sensor input. This function is used to make the room pressure higher than that of the surrounding rooms. This function sets the gas sensor input. This function delays the start-up of the total heat exchanger operation.
-
-
Not available
-
01
60 minutes
-
02
120 minutes
-
00
Not used
01
Used as 00 conditions
00
Not available
01
Available
00
Not used
01
Used as 00 conditions
00
Not used
01
Used as 00 conditions
02
Used as 00 conditions
00
Not available
01
LOW
02
SLOW
00
Not available
01
Available
00
Not used
01
Used as 00 conditions
00
Not available
01
Available
00
No function
01
Deactivate after 1 hour
02
Deactivate after 2 hours
~
~
23
Deactivate after 23 hours
24
Deactivate after 24 hours
00
Main
01
Sub
-
-
-
-
This function is used to set the timer-OFF function automatically when the unit is started with the remote control switch.
This function is used when two remote controls are installed in one system.
Main and sub remote control setting
3
Not prepared
-
-
-
4
Not prepared
-
-
-
5
Not prepared
-
-
-
6
Not prepared
-
-
-
7
Not prepared
-
-
-
page 95 TCGB0043 rev 0 - 07/2009
10
Optional Functions Available
Item
Optional Functions
Contents
Setting Condition
00
Not permitted
01
Permitted
00
Not permitted
01
Permitted
00
Not permitted
01
Permitted
00
Not permitted
01
Permitted
Description
8
Locking operation mode
9
Temperature lock
a
Fan speed lock
b
Horizontal louver position lock
c
Limited temperature range in cooling mode
00~10
01~10: Minimum temperature +1~+10ºC
00: Standard
d
Limited temperature range in heating mode
00~10
01~10: Maximum temperature -1~-10ºC
00: Standard
E
Automatic heating operation mode
page 96 TCGB0043 rev 0 - 07/2009
00
5ºC
01
10ºC
02
15ºC
-
Troubleshooting
11. T r o u b l e s h o o t i n g This chapter provides you with a concise description of the most common alarm codes of the new RASC-H(V)RNE series
Contents 11. Troubleshooting........................................................................................................97 11.1. Alarm Codes........................................................................................................................................... 98
11
pag. 97 TCGB0043 rev 0 - 07/2009
Troubleshooting
If RUN lamp flashes for 2 seconds, there is a failure in transmission between the indoor unit and the remote control switch. Possible causes are: −−The
−−Contact
In RUN lamp flashes 6 times (5 seconds) with unit number and alarm code displayed
Indoor unit number
Alarm code
NOTE The alarm code displayed (see table below) and contact your service provider.
Description Heat-pump Inverter Multi (Set-free) Cooling only Others Twin, triple and quad
Alternate indication every second
Model code Alarm code
remote cable is broken failure in remote control cable −−IC or microcomputer defective −−In all cases, contact your service contractor
Model Code Indication
No. of indoor units connected
11.1. Alarm Codes
Code No.
Category
Type of Abnormality
01
Indoor unit
Activation of protection device
02
RASC unit or Power source
Activation of protection device or Abnormality of power source wiring
03 04 06 07 08 11 12 13 14 19 20 22 24
Transmission Voltage drop Cycle
Sensor in indoor unit
Sensor on RASC unit
Abnormality between indoor (or RASC unit) and RASC unit (or indoor) units Abnormal operation between inverter and control PCB Voltage drop due to excessively low or high voltage in RASC unit Drop in discharge gas overheating Increase in discharge gas temperature Inlet air thermistor Outlet air thermistor Anti-freeze thermistor Gas pipe thermistor Protection device for fan motor is triggered Compressor thermistor Outside air thermistor Evaporation thermistor
Main Cause Float switch activated. Activation of: PSH, Float Switch, Magnetic Circuit Braker (Fan line 10 HP only), Locked Motor or Incorrect wiring (wrong phase connection). Incorrect wiring. Failure of PCB. Tripping of fuse. Power supply OFF. Transmission failure between inverter PCBs. Voltage drop in power supply. Incorrect wiring or insufficient capacity of power supply wiring. Excessive refrigerant charge. Expansion valve lock open. Insufficient refrigerant charge, refrigerant leakage. Expansion valve closed or clogged. Failure of thermistor, sensor, connection Failure of fan motor. Failure of thermistor, sensor, connection.
Incorrect setting of RASC unit and indoor units
Incorrect setting of capacity code
Incorrect setting of indoor unit number
Duplication of indoor unit number.
38
Abnormality of protective circuit in RASC unit unit
Failure of indoor unit PCB; incorrect wiring; connection to indoor unit PCB.
41
Overload cooling (possible activation of high pressure device)
RASC unit pipe thermistor temp. is higher than 55ºC and the compressor top temp. is higher than 95ºC, RASC unit protection device is activated. If I.U. freeze protection thermistor temp. is higher than 55ºC and compressor top temp. is higher than 95ºC, RASC unit protection device is activated. Stoppage due to excessive decrease of evaporating temperature (Tem < -35ºC) is activated 3 times in one hour, motor locked in heating operation.
31 35
42
System
Pressure
Heating overload (high-pressure device may be activated) Enabling of protection device for low pressure drop
47
pag. 98 TCGB0043 rev 0 - 07/2009
Troubleshooting
¡¡ Alarm Codes (Cont.) Code No.
Category
Type of Abnormality
Main Cause
48
Activation of overcurrent protection
Clogging of heat exchanger. Locked compressor. Excessive refrigerant charge, Failure of Inverter PCB.
51
Abnormality in inverter current sensor
Failure of Control PCB or Inverter PCB.
53
Activation for protection of Inverter
Inverter PCB Abnormality Compressor failure, heat exchanger clogged.
54
Inverter fin temperature increase
Abnormal inverter fin thermistor Heat exchanger clogged. Abnormal RASC unit fan. Failure of Fan Motor.
55
Inverter Abnormality
Failure of Inverter PCB.
59
Inverter fin temperature increase
Loose disconnected, broken or short-circuit connector.
Inverter
b1
Indoor unit No. setting
Incorrect unit No. setting
Over 64 indoor units, setting by refrigerant cycle No. or indoor unit address.
EE
Compressor
Compressor protection alarm
Compressor failure.
11
pag. 99 TCGB0043 rev 0 - 07/2009
HITACHI is participating in the EUROVENT Certification Programme. Products are as specified in the EUROVENT Directory of Certified Products.
Hitachi Air Conditioning Products Europe, S.A. Ronda Shimizu,1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) España ISO 9001 Certified by AENOR, Spain ISO 14001 Certified by AENOR, Spain
Hitachi Appliances, Inc. Shimizu-shi, Shizuoka-ken, Japan ISO 9001 Certified by JQA, Japan ISO 14001 Certified by JQA, Japan
Hitachi Air Conditioning Products (M) Sdn. Bnd. Lot No. 10, Jalan Kemajan Bangi Industrial Estate 43650 Bandar Baru Bangi, Selangor Darul Ehsan, Malaysia Certification ISO 9001, Malaysia Certification ISO 14001, Malaysia
TCGB0043 rev.0 - 07/2009 - Printed in Spain
