Hitachi RAK-50RPC User manual

TECHNICAL CATALOGUE
MONO SPLIT
RAC-35WPC
RAK-35RPC
RAK-50RPC
RAC-50WPC

HITACHI
Specifications in this catalogue are subject to change without prior notice in order for HITACHI to bring
in the latest innovations to their customers
Whilst every effort is made to ensure that all dimensions and specifications are correct, any printers’
error not rectified are outside the control of HITACHI, who cannot be held responsible for the same

CONTENTS 1
C
CONTENTS
CONTENTS
________________________________________________________________________________
1
SPECIFICATIONS____________________________________________________________________
1.1. WALL TYPE (RA _______________________________________________________
2
DIMENSIONAL DATA _________________________________________________________________
2.1. WALL TYPE: RAK-35RPC/50RP ________________________________________________________
2.2. WALL TYPE: RAC-35WP _____________________________________________________________
2.3. WALL TYPE: RAC-50WP _____________________________________________________________
3
CAPACITIES TABLE
_________________________________________________________________
3.1. CAPACITY CHARACTERISTIC CURVES __________________________________________________
3.1.1. RAK-35RPC/RAC-35WP ______________________________________________________________
3.1.2. RAK-50RPC/RAC-50WP ______________________________________________________________
3.2. CORRECTION FACTORS ACCORDING TO PIPING LENGTH _________________________________
3.3. CORRECTION FACTORS ACCORDING TO DEFROSTING OPERATION ________________________ 11
4
SOUND DATA
_______________________________________________________________________ 12
4.1. RAC-35WP ________________________________________________________________________ 12
4.2. RAC-50WP ________________________________________________________________________
5
WORKING RANGE
___________________________________________________________________
5.1. POWER SUPPLY ____________________________________________________________________
5.2. WORKING RANGE ___________________________________________________________________
6
ELECTRICAL DATA
__________________________________________________________________
6.1. INDOOR UNIT _______________________________________________________________________
6.2. OUTDOOR UNIT _____________________________________________________________________
7
WIRING DIAGRAM
___________________________________________________________________
7.1. RAK-35RPC, RAK-50RP ______________________________________________________________
7.2. RAC-35WP ________________________________________________________________________
7.3. RAC-50WP ________________________________________________________________________
8
REFRIGERANT CYCLE
_______________________________________________________________
8.1. WALL TYPE: RAK-35RPC / RAC-35WP __________________________________________________
8.2. WALL TYPE: RAK-50RPC / RAC-50WP __________________________________________________ 19
9
CONTROL AND FUNCTION
____________________________________________________________ 20
9.1. WIRELESS REMOTE CONTROL FUNCTION ______________________________________________ 20
9.2. AUTO CHANGEOVER ________________________________________________________________ 22
9.3. SHIFT VALUE _______________________________________________________________________ 22
9.4. OPERATION LOCK ___________________________________________________________________
9.5. SETTING THE PREVENTION OF MUTUAL INTERFERENCE__________________________________
9.6. INTERMITTENT FAN SPEED SETTING___________________________________________________
9.7. FAN SPEED SETTING IN THERMO OFF IN COOLING_______________________________________
9.8. ERROR CODE INFORMATION__________________________________________________________
9.9. ADDITIONAL FUNCTION VIA DIP-SWITCH SETTINGS ______________________________________
9.9.1. AUTO RESTART FUNCTION ___________________________________________________________
9.9.2. HEATING/COOLING ONLY MODE SELECTION ____________________________________________
10
OPTION LIST
_______________________________________________________________________
10.1. WIRED REMOTE CONTROL – SPX-RCDB ________________________________________________
10.1.1. SHIFT VALUE _______________________________________________________________________
10.1.2. ERROR CODE INFORMATION__________________________________________________________ 30
10.2. H-LINK ADAPTOR – PSC 6RAD _________________________________________________________
10.2.1. SAFETY SUMMARY __________________________________________________________________
10.2.2. INSTALLATION WORK ________________________________________________________________
10.2.3. ELECTRICAL WIRING ________________________________________________________________
10.2.4. DIP SWITCH SETTING ________________________________________________________________
10.2.5. TEST RUN__________________________________________________________________________
10.3. DRY CONTACT (SPX-WDC3) APPLICATION (USING DIP SWITCH) ____________________________
10.4. DISTRIBUTOR – SPX-DST1 ____________________________________________________________
1.2. WALL TYPE (RAC-35WPC/50WPC) ______________________________________________________
C
C
C
C
C
C
C
C
C
C
C
C
37
39
36
35
33
34
33
33
28
28
28
27
27
27
26
25
24
23
23
19
19
18
17
16
16
15
15
15
14
14
14
13
8
9
7
7
7
8
7
7
7
6
5
4
3
2
1
2
4
K-35RPC/50RPC)

SPECIFICATIONS
2
1
1
SPECIFICATIONS
1.1.
WALL TYPE (RAK-35RPC/50RPC)
INDOOR
Unit
RAK
-
-35RP
C
C
RAK
-
-50RP
C
C
Nominal capacity adjustable no no
Nominal Cooling capacity (min - max) kW 3.50
(0.90- 4.00)
5.00
(1.90- 5.20)
Cooling sensible capacity kW 2.7 3.8
Nominal Heating capacity (min - max) kW 4.20
(0.90- 5.00)
6.00
(2.2- 7.30)
Noise level cooling (sound pressure)
(SL / L / M / H) dB(A) 25/26/36/43 25/28/39/46
Noise level heating (sound pressure)
(SL / L / M / H) dB(A) 26/27/36/44 27/31/39/46
Noise level (sound power) dB(A) 57 60
Air flow cooling mode (SL / L / M / H) m3/h 353 / 420 /
485 / 680
353 / 410 /
540 / 750
Air flow heating mode (SL / L / M / H) m3/h 363 / 480 /
570 / 780
380 / 500 /
610 / 820
Fan Motor W 30 30
Dehumidification l/h 1.6 2
Dimensions (H x W x D) mm 295 x 900 x 230 295 x 900 x 230
Weight kg 10 10
Colour White (N9.5) White (N9.5)
Condensate Drain mm ij ij
Running current (C/H) A 1.09-6.35 /
1.09-7.39
2.17-9.13 /
2.17-11.96
Power supply
230V / 1Ph /
50Hz
230V / 1Ph /
50Hz
Cable section (Interconnection) mm² 1.50 x 3 +
EARTH
2.50 x 3 +
EARTH
Piping diameter (Liq / Gas) Inch 1/4" / 3/8" 1/4" / 1/2"
Drain diameter (ext) mm ij ij
Remote control (standard/optional)
RAR-6N1/
SPX-RCDB
RAR-6N1/
SPX-RCDB
Filter
ACL Filter Wasabi Wasabi
ACL part name SPX-CFH22 SPX-CFH22
Pre-filter (Standard/Optional)
Wasable/
Stainless-SPX-
SPF7
Wasable/
Stainless-SPX-
SPF7
NOTE:
1. The nominal cooling and heating capacity is the
combined capacity of the HITACHI standard split
system, and are based on the ISO 5151.
2. The Sound Pressure Level is based on the following
conditions:
- 0.8 meter beneath indoor height center
- 1 meter from Discharge grille
The above data was measured in an anechoic
chamber. Please take into consideration reflected
sound of your specific site
Operation Conditions
Cooling
Heating
Indoor Air Inlet Temperature DB
27.0 °C 20.0 °C
WB 19.0 °C
Outdoor Air Inlet
Temperature
DB 35.0 °C 7.0 °C
WB
6.0 °C
Piping Length
: 5.0 meters; P
Piping Lift
: 0 meter
: Dry Bulb; W
WB
: Wet Bulb
DB
15.0 °C
24.0 °C

SPECIFICATIONS
3
1
1.2.
WALL TYPE (RAC-35WPC/50WPC)
OUTDOOR
U
UNIT
RAC
-
-35W
P
PC
RAC
-
-50
W
WPC
Nominal Cooling capacity (min - max) kW 3.50 (0.90 - 4.00) 5.00 (1.90 - 5.20)
Nominal Heating capacity (min - max) kW 4.20 (0.90 - 5.00) 6.00 (2.2 - 7.30)
Nominal cooling power input (min - max) kW 1.090 (0.25 - 1.46) 1.560 (0.50 - 2.10)
Nominal heating power input (min - max) kW 1.100 (0.25 - 1.70) 1.660 (0.50 - 2.75)
EER / COP 3.21/3.82 3.21/3.61
SEER / SCOP 7.20/4.60 7.20/4.41
Energy class (SEER/SCOP) A++/A++ A++/A+
Noise level cooling (sound pressure) dB(A) 49 50
Noise level heating (sound pressure) dB(A) 50 50
Noise level (sound power) dB(A) 63 64
Air flow (Cooling / Heating) m3/h 1920/1620 2160/2160
Dimensions (H x W x D) mm 548 × 750 × 288 600 x 792 x 299
Weight kg 33 41
Colour Beige (5Y7/2) Beige (5Y7/2)
Power supply 230V / 1Ph / 50Hz 230V / 1Ph / 50Hz
Recommended fuse size A 15 25
Starting current (C/H) A 5.13/5.17 7.89/8.24
Running current (C/H) A 1.09-6.35/
1.09-7.39
2.17-9.13/
2.17-11.96
Cable section (Power) mm21.50 x 2 + EARTH 2.50 x 2 + EARTH
Cable section (Interconnection) mm21.50 x 3 + EARTH 2.50 x 3 + EARTH
Piping diameter (Liq / Gas) 1/4" / 3/8" 1/4" / 1/2"
Minimum piping length m 3 3
Maximum piping length / height difference m 20 / 10 20 / 10
Current quantity of refrigerant / Chargeless kg 1.050 1.250
Chargeless / Additional refrigerant charge m /
g/m 20/- 20/-
Working range (cooling / heating) °C -10 ~ 43 /
-15 ~ 21
-10 ~ 43 /
-15 ~ 21
Refrigerant R410A R410A
Condenser Fan Propeller Fan Propeller Fan
Compressor
Type
2 CYLINDER ROTARY
Oil Charge mL 320±20 480±20
Oil Type
Į+(6- H or
equivalent
Coil Resistance Ԩ2.167 at 20 1.31 at 20Ԩ
Quantity 11
NOTE:
1. The Sound Pressure Level is based on the following conditions:
- 1 meter from the unit front surface and 1 meter from floor level
The above data was measured in an anechoic chamber. Please take into consideration reflected sound of your
specific site
Į+(6- H or
equivalent
ROTARY

DIMENSIONAL DATA
4
2
2.1.
WALL TYPE: RAK-35RP 50RPC/ C
900
265 265369.5
231.5 231.5
295
230
(RAK-35RPC)
(RAK-50RPC)
12.7
83
455
2
DIMENSIONAL DATA

DIMENSIONAL DATA
2
2.2.
WALL TYPE: RAC-35WPC
Handle
Air Suction grill
Air outlet
Handle
Rear side
Holes for anchor bolt
(2 – ø12 x 6 slots for ø8.0 bolt)
(for 2 – ø8.0 bolt)
Notch for anchor bolt
Fixing hole
Drain hole
Drain hole
5

DIMENSIONAL DATA
2
2.3.
WALL TYPE: RAC-50WPC
Unit : mm
580.5 600
345
299
(19.5)
6
Drain hole
Drain hole
AIR SUCTION
View from the rear

CAPACITIES TABLE
3
3
CAPACITIES TABLE
3.1.
CAPACITY CHARACTERISTIC CURVES
The following charts show the characteristics of outdoor unit capacity, which corresponds with the operating ambient
temperature of outdoor unit.
Conditions:
䐟Pipe length / height difference : 5m / 0m 䐡Capacity loss due to white frost and defrost operation is not included.
䐠Indoor fan speed at High mode
3.1.1.
RAK-35RPC/RAC-35WP
COOLING [50Hz, 230V]
HEATING [50Hz, 230V]
EWB : Evaporator Wet Bulb temperature (qC) TC : Total Capacity (W)
EDB : Evaporator Dry Bulb temperature (qC) SHC : Sensible Heating Capacity (W)
(qCDB) : Outdoor Unit Inlet Air Dry Bulb Temperature (qC) PI : Power Input
C
  
                      
                      
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                      
                      
                      
                      
                      
  
     
   
        
                        
                
                
                
                
                
7



CAPACITIES TABLE
3
3.1.2.
RAK-50RPC/RAC-50WPC
COOLING [50Hz, 230V]
HEATING [50Hz, 230V]
EWB : Evaporator Wet Bulb temperature (qC)
TC : Total Capacity (W)
EDB : Evaporator Dry Bulb temperature (qC) SHC : Sensible Heating Capacity (W)
(qCDB) : Outdoor Unit Inlet Air Dry Bulb Temperature (qC) PI : Power Input
  
                      
                      
                      
                      
                      
                      
                      
                      

     

        
                        
                
                
                
                
                
8
 
  

CAPACITIES TABLE
9
3
3.2.
CORRECTION FACTORS ACCORDING TO PIPING LENGTH
Correction Factor for C
Cooling Capacity
according to
Piping Length
The cooling capacity should be corrected according to the
following formula:
CCA = CC x F
CCA: Actual Corrected Cooling Capacity
(kcal/h)
CC: Cooling Capacity in the Performance
Table (kcal/h)
F: Correction Factor Based on the
Equivalent Piping Length
Correction Factor for H
Heating Capacity
according to
Piping Length
The heating capacity should be corrected according to the
following formula:
HCA= HC x F
HCA: Actual Corrected Heating Capacity
(kcal/h)
HC: Heating Capacity in the Performance
Table (kcal/h)
F: Correction Factor Based on the
Equivalent Piping Length
The correction factors are shown in the following figure.
Equivalent Piping Length for:
– One 90º Elbow is 0.5m.
– One 180º Curve is 1.5m.
H: Vertical Distance Between Indoor Unit and Outdoor
Units in Meters
L: Actual One-Way Piping Length Between Indoor Unit
and Outdoor Unit in Meters
EL: Equivalent Total Distance Between Indoor Unit and
Outdoor Unit in Meters
(Equivalent One-Way Piping Length)
H
L

CAPACITIES TABLE
Models : RAK-35RPC/RAC-35WPC
Cooling Change Ratio
Heating Change Ratio
Pipe length (m) Pipe length (m)
Models : RAK-50RPC/RAC-50WPC
Cooling Change Ratio
Heating Change Ratio
Pipe length (m) Pipe length (m)
10

CAPACITIES TABLE
1 1
3
3.3.
CORRECTION FACTORS ACCORDING TO DEFROSTING OPERATION
The heating capacity in the preceding paragraph, excludes the condition of the frost or the defrosting operation period. In
consideration of the frost or the defrosting operation, the heating capacity is corrected by the equation below.
Corrected heating capacity = Defrost Correction factor x unit capacity
OUTDOOR TEMPERATURE (°CDB) -15 -10 -7 -5 0 7 10 15
Correction factor (humidity rate85% RH) 0.95 0.95 0.89 0.85 0.81 1.0 1.0 1.0
Correction Factor
NOTE:
The correction factor is not valid for special conditions such as snowfall or operation in a transitional period.
Heating
c
capacity
1 cycle
Hour
Defrost max. 12mins
Reduction in
c
capacity due to white
frost

SOUND DATA
12
4
4
SOUND DATA
4.1.
RAC-35WPC
The Sound Pressure Level is based on the following conditions:
- 1 meter from the unit front surface and 1 meter from floor level
The above data was measured in an anechoic chamber. Please take into consideration reflected sound of your specific site
Sound Pressure Level (dB)
Octave band main wave length (Hz)
Sound Pressure Level (dB)
Octave band main wave length (Hz)
49.7 47.7
44.2 42.2
38.7
33.0
27.1 25.6
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
63 125 250 500 1000 2000 4000 8000
52.0
48.0 45.3 43.9
40.3
36.0
30.8 28.6
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
63 125 250 500 1000 2000 4000 8000
COOLING
HEATING

SOUND DATA
1 3
4
4.2.
RAC-50WPC
The Sound Pressure Level is based on the following conditions:
- 1 meter from the unit front surface and 1 meter from floor level
The above data was measured in an anechoic chamber. Please take into consideration reflected sound of your specific site
Sound Pressure Level (dB)
Octave band main wave length (Hz)
Sound Pressure Level (dB)
Octave band main wave length (Hz)
46.8 50.1
45.1
41.7 39.2
33.5
27.2
21.5
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
63 125 250 500 1000 2000 4000 8000
53.5 50.6 50.1 47.4 44.9
41.5
36.3
30.5
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
1&
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
63 125 250 500 1000 2000 4000 8000
COOLING
HEATING

WORKING RANGE
14
5
5
WORKING RANGE
5.1.
POWER SUPPLY
Working Voltage
207V ~ 253V
Voltage Imbalance
Within a 3% Deviation from Each Voltage at the Main Terminal of
Outdoor Unit
Starting Voltage
Higher than 85% of the Rated Voltage
5.2.
WORKING RANGE

Applicable models:
RAC-35WPC
RAC-50WPC
The temperature range is indicated in the following table.
Cooling
Heating
working range min (omax (C) orated (C) oC) working range min (omax (C) orated (C) o
outdoor
C)
-10 43 35 outdoor -15 21 7
indoor 16 43 27 indoor 16 26 20
-30
-20
-10
0
10
20
30
40
50
5 10 15 20 25 30 35 40 45 50
Cooling working range
-30
-20
-10
0
10
20
30
40
0 5 10 15 20 25 30 35 40
Heating working range
Indoor Tem
p
erature Indoor Temperature
Ambient Tem
p
erature
COOLING
HEATING
Ambient Tem
p
erature

ELECTRICAL DATA
15
6
6
ELECTRICAL DATA
6.1.
INDOOR UNIT
Model
Unit Main Power Applicable Current Indoor Fan Motor
VOL, PH, Hz Fuse Rating (A) STC RNC RNC IPT
RAK-35RPC 230, 1, 50 3.15 (C) 5.13 (H) 5.17 (C) 6.35 (H) 7.39 0.67 30
RAK-50RPC 230, 1, 50 3.15 (C) 7.89 (H) 8.24 (C) 9.13 (H) 11.96 0.67 30
VOL: Rated Unit Power Supply Voltage (V) RNC: Running Current (A)
Hz: Frequency (Hz) PH: Phase (I)
STC: Starting Current (A) IPT: Input (W)
6.2.
OUTDOOR UNIT
Model
Unit Main Power Compressor Motor
VOL, PH, Hz Fuse Rating (A) Min (V) Max (V) Locked Rotor Ampere (A) STC
Cooling Operation Heating Operation
RNC IPT RNC IPT
RAC-35WPC 230, 1, 50 15 207 253 - 5.17 6.35 1090 7.39 1100
RAC-50WPC 230, 1, 50 25 207 253 - 8.24 9.13 1560 11.96 1660
VOL: Rated Unit Power Supply Voltage (V) RNC: Running Current (A)
HZ: Frequency (Hz) PH: Phase (I)
STC: Starting Current (A) IPT: Input (W)
NOTE:
1. The above compressor data is based on 100% capacity combination of indoor units at the rated operating frequency
2. This data is based on the same conditions as the nominal heating and cooling capacities.
3. The compressor started by an inverter, resulting in extremely low starting current.

WIRING DIAGRAM
16
7
7
WIRING DIAGRAM
7.1.
RAK-35RPC, RAK-50RPC

WIRING DIAGRAM
17
7
7.2.
RAC-35WPC

WIRING DIAGRAM
18
7
7.3.
RAC-50WPC