Panasonic CS-A18BTP, CU-A18BBP5, CU-C18BBP5 Service Manual

ORDER NO. MAC0208029C8

AIR CONDITIONER

CS-A18BTP CU-A18BBP5 CS-A18BTP CU-C18BBP5

CONTENTS

Page Page

1 SERVICE INFORMATION 3 2 FEATURES 3 SPECIFICATION (HEAT PUMP TYPE ) 4 SPECIFICATION (COOLING ONLY TYPE ) 5 TECHNICAL DRAWING 6 CIRCUIT DIAGRAM 7 OPERATING INSTRUCTION 8 REFRIGERATION CYCLE 9 OPERATION RANGE 10 PIPE LENGTH 11 OPERATIN G CHARACTERIS TIC 12 FAN PERFORMANCE 13 SAFETY DEVICE 14 COMPONE NT SPECIFICA TION 15 CAPACITY AND POWER CONSUMPTION 16 DISCHARG E AND SUCTION PRESSURE 17 POSITION OF THE CENTRE GRAVITY

18 REACHING DISTANCE 39

19 SOUND DATA

20 TWIN AND TRIPLE 21 WIRING MISTAKE PREVENTI ON

22 TEST OPERATION AND SELF DIAGNOSIS

23 SETTING OF SAVE ENERGY AND THERMISTOR SWITCH 24 GROUP CONTROL

24 26

25 TROUBLE SHOOTING

26 EMERGEN CY OPERATIO N

27 CONTROL 28 WIRED REMOTE CONTROL INSTALLATION MANUAL

31 32

29 WIRELESS REMOTE CONTROL INSTALLATION MANUAL

30 INSTALLATION (INDOOR UNIT) 31 INSTALLATION (OUTDOOR UNIT)

34 35

32 REPLACEMENT PARTS

33 HEA TING CAPACITY PERFORMANCE DATA

40 42 47 48 52 53 54 59 60 70 75 82

91 101 110

34 COOLING CAPACITY PERFORMANCE DATA 111

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 Ceiling / NEW Outdoor Unit.

The new Ceiling / new Outdoor models are possible to have address setting for twin / triple control or group control automatically when main power supply is switched on.

(Manual address setting is also possible by using DSW1 switch on the indoor unit P.C. board.) However,

only possible when proper wiring connection is made and indoor unit must be of original unit

1.1. Example of trouble during test operation

If the below phenomenon is found during test operation, wrong address setting is possible. Therefore, please inspect the address setting.

1. LCD display of the wired remote control is not illuminated although the main power supply switch is ‘on’.

2. LCD display had indicated as normal illumination when power supply switch is ‘on’, however outdoor unit cannot be operated. (But, it is necessary to take 3 to 5 minutes for outdoor unit to start from the timing of remote control OFF/ON button is ‘on’.) (For normal operation, the outdoor unit will only start its operation after 3 to 5 minutes upon pressing the OFF/ON button.)

3. P.C. board had memorized wrong setting information. a. If main power supply is switched on with the wrong connection. b. When changing the connection or combination of units due to re-installation etc.

•

When changing the system from twin to triple (triple to twin).

• •

•

When changing the system from group control to normal one to one system.

• •

•

When making the replacement of units of master and slave etc.

• •

this address setting is

1.2. Caution during test operation

Do not touch the remote control button and do not change any wirings for one minute when the main power supply switch is ‘on’. (Because the unit is having automatic address setting during the first one minute.)

1.3. Caution during automatic address setting

When the main power supply switch is ‘on’, the P.C. board will automatically memorize the connecting system. Consequently, when initial power supply is ‘on’, there mustn’t be any interchanging of units even of the same type and same

capacity unit. Therefore, connection of the unit to another system is prohibited.

2 FEATURES

2.1. New design

2.1.1. Gentle curved styling

•

• The base has gentle curves which express a functional

• •

beauty. It spreads the air quietly over a wide area.

2.2. Such quietness!

2.2.1. Several new mechanism add up to low 36 dB noise (A18BT - High Fan Speed)

1. Delta throat fan

A delta throat (projection) has been attached to the fan outlet to suppress the generation of vortexes. This helps maintain air flow sped even at lower fan speeds and is effective in reducing noise.

3. Adoption of wing-shaped vanes

•

• The vanes of the fan have been changed to

• •

“aerodynamic” shaped vanes, so that the air flow more smoothly over the vane surfaces and noise is thus suppressed.

•

• Side filters have been adopted in the pipe partitions.

• •

These allow the air intake space to be increased and also further reduce noise.

2.2.2. Automatic swinging louvre

•

• The horizontal air flow angle is a wide 100 degrees

• •

(manual). The louvre can swing automatically (through 70 degrees vertically) using the remote control. This increases the area of comfortable air flow and warms the air even to floor level.

2. Reflux orifice

The orifice at the intake port is equipped with an air flow guide which minimizes the flow disturbances which occur at the orifice and inside the impeller.

This reduces pressure losses inside the casing and also helps reduce noise.

2.2.3. Newly-shaped louvre

•

• The newly-shaped louvre and air outlet effectively distribute

• •

the air flow. During cooling, this stops warm air from collecting near the louvre, and prevents freezing.

2.3. Easy installation

2.3.1. Easy suspension

•

• A suspension bolt fixing bracket with 4-point support is

• •

attached to the main unit, which increases the space available for installation.

2.3.2. Two installation methods : standard and wall

•

• In addition to the standard (1) ceiling installation, a wall (2)

• •

installation method (using a wall-hanging bracket) is available for cases where the ceiling is too high for the main unit to be suspended.

2.5.2. Maintenance is possible from underneath the unit.

•

• If the bottom panel is detached, the drain pan can then be

• •

removed and installed from underneath the unit, and inspection and servicing of component such as the control panel also becomes easier.

2.6. Auto fan mode (indoor unit)

•

• Auto fan mode is added besides high, medium and low. It

• •

automatically adjusts the fan speed according to the indoor unit’s temperature.

2.4. Piping

2.4.1. 3-direction pipe lead-out

•

• The refrigerant piping can lead out in one of three directions

• •

(right, rear-right and top-right), and the drain pipe direction can be selected from four directions (right, rear-right, left and rear-left).

2.5. Easy maintenance

2.5.1. Long life filter (standard equipment)

•

• In general office environments, cleaning (maintenance) is

• •

not required until after approximately 2,500 hours of operation, thus reducing maintenance work.

•

• For optimum comfort, it is recommended to clean the air

• •

filter every 1-1/2 months.

2.7. Hot start system (heat pump models)

2.8. Automatic changeover function (heat pump models)

•

• The unit automatically switches between cooling and

• •

heating in accordance with operating load in order to maintain a comfortable indoor temperature.

2.9. Greatly improved workability increases system renewal capability

Pipes that are one size larger can also be connected for

•

• •

renewal.

−

− If renewing the system, existing refrigerant pipes can be

− −

utilized so that only the indoor and outdoor units need to be replaced.

−

− For example, liquid and gas pipes from 10 years ago

− −

can be connected to current pipes with the same size or one size larger. Effective utilization of materials reduces working time and trouble. (Adaptor sockets are not supplied.)

•

• Additional refrigerant charging unnecessary for 10 m

• •

−

− All models do not require any additional charging of

− −

refrigerant for 10 m of pipe length. This makes installation much easier.

•

• Drain water dripping-prevention structure

• •

−

− The base of the outdoor unit is provided with a single

− −

drain hole in order to prevent drain water from leaking out of the unit. By connecting a drain elbow and a discharge pipe, water leakages can be prevented even when the unit is installed to a wall.

−

− Master unit and slave-units can be set automatically in

− −

twin and triple systems. No address setting is necessary.

−

− Multiple indoor units can be operated simultaneously

− −

with a single remote control. Note that individual operation is not possible.

•

• Separate indoor/outdoor unit power supplies

• •

The power supply can be connected to (1) just the outdoor units, or (2) to both the indoor and outdoor units.

•

• Easy test operation

• •

Test operation can be carried out for both indoor and outdoor units.

•

• Automatic setting initialization function (Remote control

• •

and Indoor unit) In accordance with the indoor and outdoor units connected and the connection methods, conditions such as the connection configuration (twin or triple format) and remotecontrol functions such as automatic louvre operation and cooling or heating mode are automatically detected and set instantly.

•

• Long pipe design for refrigerant pipes

• •

−

− Maximum piping length of 25m for all models.

− −

2.10. A brand-new control method using the latest in technology

•

• Easier power supply wiring connection

• •

Power supply wiring and other wiring tasks can be carried out more easily.

−

− Twin non-polar wires used to connect indoor and

− −

outdoor units.

−

− Adoption of connection error prevention circuits for drive

− −

wires and signal wires. If a connection error is made, the relay does not operate and current does not flow to the circuit boards.

2.11. Wired Remote Control

•

• The new design includes an easily-visible red pilot lamp.

• •

The power can be turned on and off at a single touch, without opening the cover.

•

• Has a build-in thermistor, allowing indoor temperature

• •

detection in accordance with indoor conditions by switching with main unit thermistor.

•

• Twin non-polar wires make installation work easy. (10 m

• •

cable supplied as accessory.)

•

• Twin and Triple operation

• •

−

− Simultaneous air conditioning of wide spaces and

− −

corners is possible. Indoor units of different horsepowers can even be used in combination.

2.12. Wireless Remote Control

2.13. Group Control Equipment

•

• New design with compact size. (Operation range within

• •

approximately 8 m.)

•

• Built-in timer with ON/OFF timer setting (within 24 hours)

• •

Wired Wireless

Heat Pump CZ-RD51P CZ-RL51P

Cooling CZ-RD51P CZ-RL01P

NOTE: Both of the above remote control is packed separately from the indoor unit.

3 SPECIFICATION (HEAT PUMP TYPE )

3.1. CS-A18BTP / CU-A18BBP5

ITEM / MODEL Indoor Unit Outdoor unit

Main Body CS-A18BTP CU-A18BBP5

Remote CZ-RD51P (Wired)

Control CZ-RL51P (Wireless)

Cooling Capacity kW 5.0

BTU/h 17,100

Heating Capacity kW 5.6

BTU/h 19,100 Refrigerant Charge-less m 10 Standard Air Volume for High, m3/min 14 Hi 43 Medium and Low Speed cfm 494 1518 Outside Dimension (H x W x D) mm 210 x 1245 x 700 685 x 800 x 300

inch 8-17/32 x 49-1/64 x 27-9/16 26-31/32 x 31-1/2 x 11-13/16

Net Weight kg 33 56

lbs 73 123

Piping Connection

Compressor Type, Number of Set - Hermetic-1 (Rotary), 1

Fan Type, Number of Set Sirocco fan-4 Propeller fan-1

Air-heat Exchanger Slit-fin type Louvre-fin type Refrigerant Control Cool Capillary tube -

Refrigerant Oil (Charged) litre - M60 (0.67) Refrigerant (Charged) kg - (2.0)

Running Adjustment

Safety Devices Internal protector for compressor, Internal thermostat for fan motor,

Noise Level dB (A) Hi 40 Lo 36 Heating:55 Cooling:54

Refrigerant Gas mm (inch) O.D Ø 12.7 (1/2) Flared Type

Liquid mm (inch) O.D Ø 6.35 (1/4) Flared Type

Drain mm O.D Ø 20 I.D Ø 20 x 1

Starting Method - Direct on-line starting Motor Type - 2-pole single phase induction

motor Input kW - Cool/Heat 2.31/2.30 Rated Output kW - 1.5

Motor Type 4-pole single phase induction motor 4-pole single phase induction

motor Input kW 0.08 0.11 Rated Output kW 0.03 0.045

Heat - Capillary tube

oz (71) Control Switch Wireless or Wired Remote Control Room Temperature Thermostat (Main Body) -

Crankcase heater, High and heating pressure switch, Current

transformer

Power level dB Hi 57 Lo 53 Heating:68 Cooling:67

1. Cooling capacities are based on indoor temperature of 27°C D.B. (80.6°F D.B.), 19.0°C W.B. (66.2°F W.B.) and outdoor air temperature of 35°C D.B. (95°F D.B.), 24°C W.B. (75.2°F W.B.)

2. Heating capacities are based on indoor temperature of 20°C D.B. (68°F D.B.) and outdoor air temperature of 7°C D.B. (44.6°F D.B.), 6°C W.B. (42.8°F W.B.)

ELECTRICAL DATA (50Hz)

ITEM / MODEL CS-A18BTP, CU-A18BBP5

Condition by JIS B 8615 Volts V 220 230 240 Phase Single Single Single Power Consumption kW Cool 1.90 1.90 1.90

Heat 1.88 1.88 1.88

Running Current A Cool 8.7 8.5 8.4

Heat 8.6 8.4 8.3 Starting Current A 38 40 42 Power Factor % Cool 99 97 94

Heat 99 97 94 *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. Panasonic Power source AC, 1~220, 230, 240V 50Hz

4 SPECIFICATION (COOLING ONLY TYPE )

4.1. CS-A18BTP / CU-C18BBP5

ITEM / MODEL Indoor Unit Outdoor unit

Main Body CS-A18BTP CU-C18BBP5

Remote CZ-RD51P (Wired)

Control CZ-RL01P (Wireless)

Cooling Capacity kW 5.0

BTU/h 17,100 Refrigerant Charge-less m 10 Standard Air Volume for High, m3/min Hi 17 Me 15 Lo 14 Hi 43 Medium and Low Speed cfm 600 530 494 1518 Outside Dimension (H x W x D) mm 210 x 1,245 x 700 685 x 800 x 300

inch 8-17/32 x 49-1/64 x 27- 9/16 26-31/32 x 31-1/2 x 11-13/16

Net Weight kg 33 52

lbs 73 115

Piping Connection Refrigerant Gas mm (inch) O.D Ø 12.7 (1/2) Flared Type

Liquid mm (inch) O.D Ø 6.35 (1/4) Flared Type

Drain mm O.D Ø 20 I.D Ø 20 x 1

Compressor Type, Number of Set - Hermetic-1 (Rotary), 1

Starting Method - Direct on-line starting Motor Type - 2-pole single phase induction

Input kW - Cool 2.31 Rated Output kW - 1.5

Fan Type, Number of Set Sirocco fan-4 Propeller fan-1

Motor Type 4-pole single phase induction motor 4-pole single phase induction

Input kW 0.08 0.11

Rated Output kW 0.03 0.045 Air-heat Exchanger Slit-fin type Louvre-fin type Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre - M60 (0.67) Refrigerant (Charged) kg - (1.6)

oz (56)

Running Adjustment

Safety Devices Internal protector for compressor, Internal thermostat for fan motor,

Noise Level dB (A) Hi 40 Lo 36 Cooling: 54

Control Switch Wireless or Wired Remote Control Room Temperature Thermostat (Main Body) -

Crankcase heater, High pressure switch, Current transformer

Power level dB Hi 57 Lo 53 Cooling: 67

motor

1. Cooling capacities are based on indoor temperature of 27°C D.B. (80.6°F D.B.), 19.0°C W.B. (66.2°F W.B.) and outdoor air temperature of 35°C D.B. (95°F D.B.), 24°C W.B. (75.2°F W.B.)

ELECTRICAL DATA (50Hz)

ITEM / MODEL CS-A18BTP, CU-C18BBP5

Condition by JIS B 8615 Volts V 220 230 240 Phase Single Single Single Power Consumption kW Cool 1.90 1.90 1.90 Running Current A Cool 8.7 8.5 8.4 Starting Current A 38 40 42 Power Factor % Cool 99 97 94 *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. Panasonic Power source AC, 1~220, 230, 240V, 50Hz

5 TECHNICAL DRAWING

6 CIRCUIT DIAGRAM

1213141516171819202122

7 OPERATING INSTRUCTION

7.1. Wired Remote Control (OPTIONAL PARTS)

NOTES:

•

• Ensure that the correct button is pressed as simultaneous pressing of the multiple buttons will not make the setting correct.

• •

•

• The illustration above is for explanatory purposes only. The appearance will be different during actual operation.

• •

•

• Do not operate the remote control with wet hands. Otherwise, electric shock or malfunction may occur.

• •

•

• Do not press the remote control buttons with sharp object as this may damage the remote control.

• •

•

• Buttons marked with * are not needed for normal operation. If one of these buttons is pressed by mistake, press the same

• •

button once more to cancel the operation.

•

• When the power resumed after power failure, the unit will restart automatically with all the previous settings preserved by the

• •

memory function. (Auto restart function)

7.2. Wireless Remote Control (OPTIONAL PARTS)

NOTES:

•

• Ensure that the correct button is pressed as simultaneous pressing of the multiple buttons will not make the setting correct.

• •

•

• The illustration above is for explanatory purpose only. The appearance will be different during actual operation.

• •

•

• If using the wireless remote control in conjunction with the wired remote control, the settings made from the wireless remote

• •

control will appear on the wired remote control display (except when making timer settings).

•

• Buttons marked with * are not needed for normal operation. If one of these buttons is pressed by mistake, press the same

• •

button once more to cancel the operation.

•

• When the power resumed after power failure, the unit will restart automatically with all previous settings preserved by the

• •

memory function. (Auto restart function)

8 REFRIGERATION CYCLE

CS-A18BTP/CU-A18BBP5

CS-A18BTP/CU-C18BBP5

9 OPERATION RANGE

Power Supply

The applicable voltage range for each unit is given in the following table. The working voltage among the three phases must be balanced within a 3% deviation from each voltage at the compressor terminals. The starting voltage must be higher than 85% of the rated voltage.

Power Supply

MODEL Unit Main Power Applicable Voltage

Phase, Volts Hz Max Min

A18BB 1~220 50 242 198

1~230 50 253 207 1~240 50 264 216

Indoor and Outdoor Temperature

•

• Cooling only type

• •

Model 50Hz CU-C18BBP5

Operating Hz Indoor Temp. (D.B./W.B.) (°C) Outdoor Temp. (D.B./W.B.) (°C)

Max Min Max Min

Cooling 50/60 32/23 21/15 43/- -5/-

•

• Heat pump type

• •

Model 50Hz CU-A18BBP5

Operating Hz Indoor Temp. (D.B./W.B.) (°C) Outdoor Temp. (D.B./W.B.) (°C)

Cooling 50 32/23 21/15 43/- -5/Heating 50 27/- 16/- 24/18 -10/-

Max Min Max Min

10 PIPE LENGTH

CORRECTION OF COOLING CAPACITY AND HEATING CAPACITIES

■■■■

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 5 meters connecting pipe and horizontal installation. For other pipe length of other installation multiply by the following correction factor to determine the revised cooling capacity.

REFRIGERANT ADDITIONAL CHARGE

■■■■

Piping installation by standard piping

•

• At the time of shipment from the factory, this unit is charged with enough refrigerant for an equivalent pipe length of 10m.

• •

(Refer to the following table) But when the piping length exceeds 10m, additional charge is required according to the following table.

Example: CU-C18BBP5

In case of 11m long pipe (one way), the amount of refrigerant to be replenished is: (11 - 10) x 20 = 20g

■ Cooling only type

Model Name Standard piping specification

Liquid piping (dia.mm) Gas piping (dia.mm) Gas charge-less length

(m)

CU-C18BBP5 6.35 12.70 10 20

Additional gas volume

(g/m)

■ Heat pump type

Model Name Standard piping specification

Liquid piping (dia.mm) Gas piping (dia.mm) Gas charge-less length

CU-A18BBP5 6.35 12.70 10 20

Piping installation by existing piping

(m)

Additional gas volume

(g/m)

The above models change the liquid pipe size of the previous series. It is to use the existing piping by adjusting the refrigerant gas volume.

Please do correct piping installation referring to the above table.

Attention

•

Please do not 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.

• •

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