Panasonic Cs W18bd3n Cs W24bd3n Cs W28bd3n Series Repair Manual

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							APPLICABLE FOR ALL MODELS
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							6 OPERATING INSTRUCTION
6.1. Wired Remote Control
Name and function of each part
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							7 REFRIGERATION CYCLE
7.1. Heating Model
CS-W18BD3N / CU-W18BBN5
CS-W24BD3N / CU-W24BBN5
CS-W28BD3N / CU-W28BBN5 , 8
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							CS-W34BD3N / CU-W34BBN8
CS-W43BD3N / CU-W43BBN8
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							8 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
W18BBN5
W24BBN5
W28BBN51~22050242198W28BBN8
W34BBN8
W43BBN83N~38050418342
1~230502532073N~40050440360
1~240502642163N~41550457374
Indoor and Outdoor Temperature

 
Heat pumptype
Model 50Hz ...W18BBN5,W24BBN5,W28BBN5 (8), W34BBN8,W43BBN8
OperatingHzIndoor Temp. (D.B./W.B.) (°C)Outdoor Temp. (D.B./W.B.) (°C)
MaximumMinimumMaximumMinimum
Cooling5032/2321/1543/--5/-
Heating5027/-16/-24/18-10/-
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							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.
9.2. 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-W24BD3N
In case of 30m long pipe (one-way), the
amoun t of refrigerant to be replenished is:
(30 - 30) x 20 = 0g
CS-W43BD3N
In case of 50m long pipe (one-way), the
amoun t of refrigerant to be replenished is:
(50 - 30) x 50 = 1,000g
9 PIPE LENGTH
9.1. CORRECTION OF COOLING AND HEATING CAPACITIES
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							9.3. Piping installation by existing piping

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-W18BBN56.3512.73020
CU-W24BBN56.3515.883020
CU-W28BBN59.5215.883050
CU-W28BBN89.5215.883050
CU-W34BBN89.5219.053050
CU-W43BBN89.5219.053050
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