Panasonic Cu W18bbp5 Cu 24bbp5 Cu W34bbp8 Cu W43bbp8 Series Repair Manual

							9 OPERATION RANGE
The applicable voltage range for each unit is given in “thefollowing table”. The workingvoltage among the three phases
must be balanced within 3% deviation from each voltage at the compressor terminals. The starting voltage must be higher
than 85% of the rated voltage.
Power Supply
Model
CU-Unit Main PowerApplicable VoltageModel
CU-Unit Main PowerApplicable Voltage
Phase, VoltsHzMaximumMinimumPhase, VoltsHzMaximumMinimum
W18BBP5
W24BBP5
W28BBP5
V18BBP5
V24BBP5
V28BBP51~22050242198W28BBP8
W34BBP8
W43BBP8
V24BBP8
V28BBP8
V34BBP8
V43BBP83N~38050418342
1~230502532073N~40050440360
1~240502642163N~41550457374
Indoor and Outdoor Temperature




 

Coolingonly type
Model 50Hz ... V18BB P5, V24BB P5 (8), V28BB P5 (8), V34BB P8, V43BB P8
OperatingHzIndoor Temp. (D.B./W.B.) (°C)Outdoor Temp. (D.B./W.B.) (°C)
MaximumMinimumMaximumMinimum
Cooling5032/2321/1543/--5/-




 

Heat pumptype
Model 50Hz ...W18BBP5,W24BBP5,W28BBP5 (8), W34BBP8,W43BBP8
OperatingHzIndoor Temp. (D.B./W.B.) (°C)Outdoor Temp. (D.B./W.B.) (°C)
MaximumMinimumMaximumMinimum
Cooling5032/2321/1543/--5/-
Heating5027/-16/-24/18-10/-
51 
						

							Correction of cooling and heating capacities according to
the connecting pipe length.
The data of cooling capacities (marked on the name plate)
are based on 7.5 metres connecting pipe and horizontal
installation.
(Cooling)
Equivalent Length = actual pipe length +
number of elbow x ELE + number of oil
trap x ELO
ELE : equivalent length ofelbow.
ELO : equivalent length of oil trap.
10.2. REFRIGERANT ADDITIONAL
CHARGE
 
    • 
• •  • 
The piping length exceeds 30 metres.
APPLICABLE FOR ALLMODELS
Before shipment, this air conditioner is filled with the rated
amoun t of refrigerant subject to 30m piping length. (The
rated amoun t of refrigerant is indicated on the name plate.)
But when the piping length exceed s 30m, additio nal charge
is required according to the following table.For other pipe length of other installation multiply
by the following correction factor to determine the
revised cooling capacity.
(Heating)
Outer diameter of gas
side pipe mm (inch)
9.520.18
12.7 (1/2)0.20
15.88 (5/8)0.25
19.05 (3/4)0.35
ModelRef. Charge
2.0~2.5HP20g per 1m
3~5HP50g per 1m
Example :
CS-W24BD3P
In case of 30m long pipe (one-way), the
amoun t of refrigerant to be replenished is:
(30 - 30) x 20 = 0g
CS-W43BD3P
In case of 50m long pipe (one-way), the
amoun t of refrigerant to be replenished is:
(50 - 30) x 50 = 1,000g
10 PIPE LENGTH
10.1. CORRECTION OF COOLING AND HEATING CAPACITIES
52 
						

							10.3. Piping installation by existing piping


Coolingonly type(50Hz)
Model NameStandard piping specification
Liquid piping (dia.mm)Gas piping (dia.mm)Gas charge-less length
(m)Additional gas volume (g/m)
CU-V18BBP56.3512.73020
CU-V24BBP56.3515.883020
CU-V24BBP86.3515.883020
CU-V28BBP59.5215.883050
CU-V28BBP89.5215.883050
CU-V34BBP89.5219.053050
CU-V43BBP89.5219.053050


Heat pumptype(50Hz)
Model NameStandard piping specification
Liquid piping (dia.mm)Gas piping (dia.mm)Gas charge-less length (m)Additional gas volume
(g/m)
CU-W18BBP56.3512.73020
CU-W24BBP56.3515.883020
CU-W28BBP59.5215.883050
CU-W28BBP89.5215.883050
CU-W34BBP89.5219.053050
CU-W43BBP89.5219.053050
Attention
 
    • 
• •  • 
Please never decrease the gas piping size. (It causes the breakdown of the compressor)
 
    • 
• •  • 
The equivalent piping length and the cooling and heating capacity change rate are same as the standard piping
specification.
53 
						

							11 OPERATING CHARACTERISTIC
HEAT PUMPMODEL
ModelMain PowerCompressor MotorIndoor UnitOutdoor UnitElectrical Data (50Hz)
SourceFan MotorFan MotorR.CIPT
VoltageFrequencyS.C.R.C.(A)IPT(kW)R.C.IPTR.C.IPT(A)(kW)
(V)(Hz)(A)COOL / HEATCOOL / HEAT(A)(kW)(A)(kW)COOL / HEATCOOL / HEAT
CS-W18BD3P22050387.49 / 7.591.63 / 1.660.600.130.410.098.50 / 8.601.85 / 1.88
CU-W18BBP523050407.19 / 7.291.63 / 1.660.600.130.410.098.20 / 8.301.85 / 1.88
24050426.87 / 6.871.62 / 1.650.600.130.430.107.90 / 7.901.85 / 1.88
CS-W24BD3P220506410.6 / 10.82.31 / 2.350.660.150.460.1011.7 / 11.92.56 / 2.60
CU-W24BBP5230506610.1 / 10.32.30 / 2.340.660.150.470.1111.2 / 11.42.56 / 2.60
24050689.7 / 9.82.30 / 2.340.660.150.480.1110.8 / 10.92.56 / 2.60
CS-W28BD3P220506811.8 / 12.52.57 / 2.730.840.190.460.1013.1 / 13.82.86 / 3.02
CU-W28BBP5230507011.2 / 11.92.56 / 2.720.840.190.470.1112.5 / 13.22.86 / 3.02
240507211.2 / 11.42.56 / 2.720.840.190.480.1112.5 / 12.72.86 / 3.02
CS-W28BD3P38050284.23 / 4.132.47 / 2.610.660.150.460.104.60 / 4.502.72 / 2.86
CU-W28BBP840050294.22 / 4.122.46 / 2.600.660.150.470.114.60 / 4.502.72 / 2.86
41550304.22 / 4.122.46 / 2.600.660.150.480.114.60 / 4.502.72 / 2.86
CS-W34BD3P38050394.32 / 4.623.46 / 3.650.970.220.910.206.20 / 6.503.88 / 4.07
CU-W34BBP840050414.29 / 4.593.45 / 3.640.970.220.940.216.20 / 6.503.88 / 4.07
41550424.26 / 4.563.43 / 3.620.970.220.970.236.20 / 6.503.88 / 4.07
CS-W43BD3P38050587.09 / 7.294.01 / 4.181.150.260.990.227.80 / 8.004.49 / 4.66
CU-W43BBP840050587.08 / 7.284.00 / 4.171.150.261.020.237.80 / 8.004.49 / 4.66
41550587.07 / 7.273.98 / 4.151.150.261.040.257.80 / 8.004.49 / 4.66
COOLING ONLY MODEL
CS-W18BD3P22050387.491.630.600.130.410.098.501.85
CU-V18BBP523050407.191.630.600.130.410.098.201.85
24050426.871.620.600.130.430.107.901.85
CS-W24BD3P220506410.62.310.660.150.460.1011.72.56
CU-V24BBP5230506610.12.300.660.150.470.1111.22.56
24050689.72.300.660.150.480.1110.82.56
CS-W24BD3P38050272.982.170.660.150.460.104.102.42
CU-V24BBP840050282.972.160.660.150.470.114.102.42
41550292.962.160.660.150.480.114.102.42
CS-W28BD3P220506812.72.570.840.190.460.1013.12.86
CU-V28BBP5230507012.12.560.840.190.470.1112.52.86
240507212.12.560.840.190.480.1112.52.86
CS-W28BD3P38050283.482.470.660.150.460.104.602.72
CU-V28BBP840050293.472.460.660.150.470.114.602.72
41550303.462.460.660.150.480.114.602.72
CS-W34BD3P38050395.573.460.970.220.910.206.203.88
CU-V34BBP840050415.563.450.970.220.940.216.203.88
41550425.553.430.970.220.970.236.203.88
CS-W43BD3P38050587.094.011.150.260.990.227.804.49
CU-V43BBP840050587.084.001.150.261.020.237.804.49
41550587.073.981.150.261.040.257.804.49
Legend:
S.C.: Starting Current
R.C.: Runnin g Current
IPT: Power Consumption
54 
						

							12 FAN PERFORMANCE
55 
						

							
 
CS-W18BD3P
Fan Performance Curve

 
CS-W24BD3P
Fan Performance Curve
56 
						

							
 
CS-W28BD3P
Fan Performance Curve

 
CS-W34BD3P
Fan Performance Curve
57 
						

							
 
CS-W43BD3P
Fan Performance Curve
58 
						

							13 SAFETY DEVICE
 
    • 
• •  • 
INDOOR UNIT
Indoor unitModelCS-
W18BD3PCS-
W24BD3PCS-
W24BD3PCS-
W28BD3PCS-
W28BD3PCS-
W34BD3PCS-
W43BD3P
For fan motor protection
InternalOFF°C135135135135135135135
Protector (49F)ON°C87878787878787
For control protection
FuseCUTA3.153.153.153.153.153.153.15
 
    • 
• •  • 
OUTDOOR UNIT
Outdoor unitHeat
pump
model50HzCU-
W18BBP5CU-
W24BBP5-CU-
W28BBP5CU-
W28BBP8CU-
W34BBP8CU-
W43BBP8
Cooling
only
model50HzCU-
V18BBP5CU-
V24BBP5CU-
V24BBP8CU-
V28BBP5CU-
V28BBP8CU-
V34BBP8CU-
V43BBP8
For refrigerant cycle
High pressureOFFMPa3.13.13.13.13.13.13.1
switch (63H1)ONMPa2.32.32.32.32.32.32.3
For compressor
Over current protection
Heat pump
modelOFFA1517-2381113
Cooling
only modelOFFA
50Hz151772381113
RESET-AutomaticAutomaticAutomaticAutomaticAutomaticAutomaticAutomatic
Discharge temp.
protection
Discharge temperature
thermistor (Th1)Com-
pressor
OFF°C115115115120120120120
Liquid compress
protection
Crankcase heaterInput
powerW26~3131~3731~3731~3731~3734~4134~41
Compressor protection
Internal protectorOFF°C
50Hz150160120160120145135
ON°C
50Hz90909090906161
Trip
time°C3-10sec/
52A5-15sec/
74A-5-15sec/
74A-3-10sec/
37A2-10sec/
45A
For fan motor
protectionOFF°C
50Hz135135135135135135135
Internal protector
(49F)ON°C
50Hz85858585858585
Heating control
(Heat pump only)
Pressure switchOFFMPa2.352.352.352.352.352.352.35
(Fan speed)(63H2)ONMPa1.961.961.961.961.961.961.96
Cooling control
Heat exchanger outlet
temperature thermistor
(Th2)Control
methodTh30°C---High speed
Th
						

							14 COMPONENT SPECIFICATION
Compressor
ModelsHeat pump
model50HzCU-W18BBP5CU-W24BBP5CU-W28BBP5
CU-W28BBP8CU-W34BBP8CU-W43BBP8
Cooling only
model50HzCU-V18BBP5CU-V24BBP5
CU-V24BBP8CU-V28BBP5
CU-V28BBP8CU-V34BBP8CU-V43BBP8
60Hz-----
Compressor ModelPE31VNEMTNE41VNHMTNE44VNHMTZR48KCE-TFDZR57KCE-TFD
NE41YDNMTNE44YDNMT
Compressor Type
No. of CylindersROTARYSCROLL
11111
Revolutionr/min.2,9002,9002,9002,9002,900
Piston Displacementm3/h5.437.277.7311.3913.42
Motor Type
Starting MethodDirect on-line Starting
Rated OutputkW1.31.92.03.03.5
Poles
Insulation Glass2
E2
E2
E2
E2
E
Oil TypeMEL56MEL56MEL56MMMAPOEMMMAPOE
ChargeL0.71.31.31.32.0
Evaporator
ModelsCS-W18BD3PCS-W24BD3PCS-W28BD3PCS-W34BD3PCS-W43BD3P
Tube MaterialCopper Tube
Outer Diametermm9.529.529.529.529.52
Thicknessmm0.360.360.360.360.36
Row33323
No. of Tubes/Row1010101010
Fin MaterialAluminum
Thicknessmm0.1150.1150.1150.1150.115
Fin PitchNo./inch1414141412
Fin SurfaceX-Louvre-finX-Louvre-finX-Louvre-finX-Louvre-finX-Louvre-fin
Total Face Aream20.160.210.210.350.35
FanSirocco
Type
No. of/Unit22234
Fan motorDirect On-Line Starting
Starting Method
Rated OutputkW0.0850.0850.1150.150.20
Poles44444
PhaseSingle-PhaseSingle-PhaseSingle-PhaseSingle-PhaseSingle-Phase
Insulation ClassEEEEE
60