Panasonic Cs W18bd3n Cs W24bd3n Cs W28bd3n Series Repair Manual

 1 SERVICE INFORMATION 2
 2 FEATURES 
3
 3 SPECIFICATION (HEAT PUMP TYPE) 
9
 4 TECHNICAL DRAWING 
15
 5 CIRCUITDIAGRAM 
23
 6 OPERATING INSTRUCTION 
34
 7 REFRIGERATION CYCLE 
36
 8 OPERATIO N RANGE 
38
 9 PIPE LENGTH 
39
 10  OPERATING CHARACTERISTIC 
41
 11  FAN PERFORMANCE 
42
 12  SAFETYDEVICE 
46
 13  COMPONENT SPECIFICATION 
47
 14  CAPACITY AND POWERCONSUMPTION 
49
© 2002 Matsushita Industrial Corporation Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a...

1 SERVICE INFORMATION
Caution:
!Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please
use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ±
10°C).
!Pb free solder will tend to splash when heated too high (about 1100° F/600°C).
Notice of Address setting for NEW Hide-away / NEW Outdoor Unit.
The new Hide-away / New Outdoor models are possible to have...

2.1. Variety of excellent features
2.1.1. Compact design, height 27 cm
 
    • 
• •  • 
The height has been reduced to 27 cm (for 2.5HP to
5.0HP), the equipment can be installe d in limited spaces.
2.1.2. Versatile installation
 
    • 
• •  • 
The indoor unit is designed in order that air will also enter
from below, for easier installa tion under different conditions.
 
    • 
• •  • 
The equipment has two drain outlets on the right and left
side for adoption to the installa tion conditions in the...

[Product features]
2.2.1. Low-noise design improves in
surrounding areas
 1. The noise-suppressing winglet fan is a result of new
research into vane design theory. The unique curved shape
suppresses the generation of vortexes, thus reduces air
flow noise.
 2. The adoption of double -orifice rings reduces air passage
resistance.
 3. Strengthening of the noise insulation materials in the
compressor and the sealing-in of mechanical noise allows
vibration noise to be greatly enclosed and suppressed.
 4. The...

2.3.1. Additional refrigerant charging
unnecessary for 30 m
 
    • 
• •  • 
All models do not require any additio nal charging of
refrigerant for 30 m of pipe length. This makes installa tion
much easier.
2.3.2. Drain water dripping-prevention
structure
 
    • 
• •  • 
The base of the outdoo r unit is provided with a single drain
hole in order to prevent drain water from leaking out of the
unit. Body connecting a drain elbow and a discharge pipe,
water leakages can be prevented even when the unit is...

2.4.2. Separate indoor/outdoor unit
power supplies
The power supply can be connected to (1) just the outdoo r
2.4.5. Twin operation
 
    • 
• •  • 
Simultaneous air conditioning of wide spaces and corners is
possible. Indoor units of different horsepowers and models
can even be used in combination.
 
    • 
• •  • 
Master unit and slave-units can be set automatically in twin
systems. No address setting is necessary.
 
    • 
• •  • 
Multiple indoor units can be operated simultaneousl y with a
single...

2.5.2. Installation and precautions
2.5.2.1. Before installation
 1. Determine the installa tion division.
 2. Check the refrigerant to be used.
 
    • 
• •  • 
Check that the refrigerant is R407C .
 
    • 
• •  • 
Check that the gauge pressure is at a maximum of 3.3
MPa.
 3. Make a drawing of the Installation.
2.5.2.2. Installation
 1. Install the sleeve and the insert.
 2. Install the indoor unit.
 3. Install the refrigerant piping.
 
    • 
• •  • 
Pipe materials (Phosphorus Deoxid ization Seamless...

(It is recommended that a manifo ld with sight glass be
used.)

Boiling point at normal atmospheric pressure
(reference)
RefrigerantHFC32HFC125HFC134a
Boiling point-52°C-49°C-26°C
 
    • 
• •  • 
Use a special gauge manifo ld and charging hose. 
    • 
• •  • 
If refrigerant leaks occur, replace all of the refrigerant
(same as for R22).
 
    • 
• •  • 
Note that a R22 leak detector cannot be use to detect
leaks.
 
    • 
• •  • 
Refer to the Installation Instructions include d for the
correct charging...

3 SPECIFICATION (HEAT PUMP TYPE)
3.1. CS-W18BD3N / CU-W18BBN5
ITEM / MODELIndoor UnitOutdoor unit
Main BodyCS-W18BD3NCU-W18BBN5
Cooling CapacitykW5.10
(BTU/h)(17,400)
Heating CapacitykW5.60
(BTU/h)(19,100)
Refrigerant Charge-lessm30
Standard Air Volume for High Speedm3/minHi 17
cfmHi 600
External Static PressuremmAqHi 7-
PaHi 69
Air InletBackward SuctionBack sided Suction
Air OutletFront blow-outFront blow-out
Outside Dimension (H x W x D)mm270 x (780 + 100) x 650900 x 900 x 320
Net Weightkg (lbs)34...

3.2. CS-W24BD3N / CU-W24BBN5
ITEM / MODELIndoor UnitOutdoor unit
Main BodyCS-W24BD3NCU-W24BBN5
Cooling CapacitykW6.30
(BTU/h)(21,500)
Heating CapacitykW7.10
(BTU/h)(24,200)
Refrigerant Charge-lessm30
Standard Air Volume for High Speedm3/minHi 20
cfmHi 706
External Static PressuremmAqHi 7-
PaHi 69
Air InletBackward SuctionBack sided Suction
Air OutletFront blow-outFront blow-out
Outside Dimension (H x W x D)mm270 x (1000 + 100) x 650900 x 900 x 320
Net Weightkg (lbs)40 (88)81 (179)
Piping...