Panasonic CS-E15DKDW, CU-E15DKD, CS-E18DKDW, CU-E18DKD, CS-E21DKDS Service Manual

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Order No. MAC0501021C2

Air Conditioner

CS-E15DKDW CU-E15DKD CS-E18DKDW CU-E18DKD CS-E21DKDS CU-E21DKD

CONTENTS

Page Page

1 Features 2

2 Functions

2.1. Remote Control

2.2. Indoor Unit

2.3. Outdoor Unit

3 Product Specifications

3.1. CS-E15DKDW CU-E15DKD

3.2. CS-E18DKDW CU-E18DKD

3.3. CS-E21DKDS CU-E21DKD

4 Dimensions

4.1. Indoor Unit & Remote Control

4.2. Outdoor Unit

5 Refrigeration Cycle Diagram 15

6 Block Diagram

7 Wiring Diagram

8 Operation Details

8.1. Basic Function

8.2. Protection Control Features

9 Operating Instructions

9.1. CS-E15DKDW

9.2. CS-E18DKDW CS-E21DKDS

10 Installation And Servicing Air Conditioner Using R410A

10.1. Outline

10.2. Tools For Installing/Servicing Refrigerant Piping

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E18DKD / CS-E21DKD S CU-E21DKD

10.3. Refrigerant Piping Work 64

10.4. Installation, Transferring, Servicing

11 Installation Instructions

11.1. Safety Precautions

11.2. Indoor Unit

11.3. Outdoor Unit

12 Installation Instructions

12.1. Safety Precautions

12.2. Indoor Unit

12.3. Outdoor Unit

13 Servicing Information

13.1. Troubleshooting

13.2. Breakdown Self Diagnosis Function

13.3. Remote Control

13.4. Disassembly of Parts

14 Technical Data

14.1. Operation Characteristics

1 Features

Product

•

Four modes of operation selection

−

Powerful Mode operation

−

Delay ON Timer and OFF Timer

−

Ionizer Mode Operation

−

Quiet Mode Operation

−

Automatic air swing and manual adjusted by Remote

−

Control for horizontal and vertical airflow

Supersonic Air Purifying System with Super Alleru-

−

Buster.

Inactive various harmful airbone elements including allergens, viruses and bacteria. Generated supersonic waves enhance the ability to collect dust and dirt in the air.

100

14.2. Sensible Capacity Chart 103

15 Exploded View (Indoor Unit)

15.1. CS-E15DKDW

15.2. CS-E18DKDW CS-E21DKDS

16 Replacement Parts List (Indoor Unit)

16.1. CS-E15DKDW

16.2. CS-E18DKDW CS-E21DKDS

17 Exploded View (Outdoor Unit)

17.1. CU-E15DKD CU-E18DKD CU-E21DKD

18 Replacement Parts List (Outdoor Unit)

18.1. CU-E15DKD CU-E18DKD CU-E21DKD

19 Electronic Circuit Diagram

19.1. Indoor Unit

19.2. Outdoor Unit

19.3. Remote Control

19.4. Print PatternIndoor Unit Printed Circuit Board

19.5. Print PatternOutdoor Unit Printed Circuit Board View

Serviceability Improvement

•

Removable washable Front Panel

−

Breakdown Self Diagnosis function

−

Environmental Protection

•

Non-ozone depletion substances refrigerant (R410A)

−

Quality Improvement

•

Gas leakage detection

−

Deice operation

−

Auto restart control

−

104

105

106

107

108

109

110

114

120

121

122

2 Functions

2.1. Remote Control

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E18DKD / CS-E21DKD S CU-E21DKD

OFF/ON

MODE

POWERFUL

QUIET

AIR SWING

Operation OFF / ON

Operation Mode Selection

•

HEAT COOL DRY

Automatic Operation Heating Operation Cooling Operation Soft Dry Operation

Powerful Mode Operation

Quiet Mode Operation

Ion Mode Operation

Airflow Direction Control

• Vertical Automatic Airflow Direction Control and Manual Airflow Direction Control (5 stages of adjustment).

•

Horizontal Automatic Airflow Direction Control and Manual Airflow Direction Control (5 stages of adjustment).

FAN SPEED

TEMP

TIMER

OFF

∧ ∨

SET

CANCEL

CLOCK

CHECK

RESET

Indoor Fan Speed Selection

• Low

•

AUTO FAN

MediumMedium Medium+ High Automatic Fan Speed

Room Temperature Setting

• Increase or decrease set temperature. (16°C to 30°C)

Timer Setting

• 24-hour, OFF / ON Real Timer Setting.

Time / Timer Setting

• Hours and minutes setting.

Timer Operation Set / Cancel

• ON Timer and OFF Timer setting and cancellation.

Clock Setting

• Current time setting.

Check Point

• Breakdown self diagnosis function.

Reset Point

• Clear memory data.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

2.2. Indoor Unit

Automatic Operation Switch

• Press for < 5s to run Automatic Operation. (Used when the remote control cannot be used.)

• Press continuously for 5s and < 8s to run Forced Cooling Operation.

• Press continuously for 8s and < 11s to run Forced Heating Operation.

• Press continuously for 11s and < 16s to change different remote controlling setting (4 type of transmission code).

• Press continuously for 16s or < 21s to switch OFF / ON Remote Control Receiving Sound or H14 Abnormality Detection Mode.

Operation Indication Lamps (LED)

•

POWER

•

TIMER

•

QUIET

•

POWERFUL

•

SUPER ALLERU-BUSTER ....

•

(Blue) operation.

(Green) ......

(Orange) .... Lights up in Timer

(Orange) .... Lights up in Quiet

(Orange) ... Lights up when

(Green) ............ Lights up in Ionizer

Lights up in operation, blinks in Automatic Operation Mode judging, deice, On Timer sampling and Hot Start operation.

Setting. Blinks in Self Diagnosis Control.

Mode Operation.

Powerful Mode is selected.

Mode Operation. Blinks in Ionizer error.

Lights up in

Four Operation Modes

• Automatic, Heating, Cooling and Soft Dry Operation.

Automatic and 5 Manual Indoor Fan Speeds

Automatic and 5 Manual Vertical Airflow Directions

Automatic and 5 Manual Horizontal Airflow Directions

Powerful Mode

• For quick cooling or heating.

Quiet Mode

• To provide quiet operation.

Ionizer Control

• Ionizer control for generate negative ion in discharge air.

Delay ON Timer and OFF Timer

Automatic Restart Control

• Operation is restarted after power failure at previous setting mode.

Microcomputer-controlled Room Temperature Control

2.3. Outdoor Unit

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Breakdown Self Diagnosis Function

Low Pressure Control (Gas Leakeage Detection)

Indoor Power Relay Control

Anti-Dew Formation Control

Anti Freezing Control

Anti-Cold Draft Control

Hot Start

Intake Air Temperature Control

Time Delay Safety Control

30 seconds Forced Operation

Overload Protection Control

Total Running Current Control

Compressor Overheating Prevention Control

IPM (Power Transistor) Overheating Protection Control

Low Operation Frequency Protection Control

Mininum Operation Frequency Protection Control

High Pressure Control

Deodorizing Control

Deice Operation

Outdoor Air Temperature Control

Standby Control

Deice Operation

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

3 Product Specifications

3.1. CS-E15DKDW CU-E15DKD

Unit CS-E15DKDW CU-E15DKD

Cooling Capacity kW

kcal/h

BTU/h

Heating Capacity kW

kcal/h

BTU/h

Moisture Removal l/h

Pint/h

Power Source (Phase, Voltage, Cycle) ø

Airflow Method OUTLET

INTAKE

4.40 (0.90 - 5.00)

3,780 (770 - 4,300)

15,000 (3,070 - 17,100)

5.50 (0.90 - 7.10)

4,730 (770 - 6,110)

18,800 (3,070 - 24,200)

2.4

(5.1)

Single

220 - 230

SIDE VIEW TOP VIEW

Air Volume Lo m3/min (cfm) Cooling; 7.4 (260) —

Heating; 8.8 (310)

Me m3/min (cfm) Cooling; 9.2 (320) —

Heating; 10.3 (360)

Hi m3/min (cfm) Cooling; 11.0 (390) Cooling; 48.5 (1,710)

Heating; 11.8 (420) Heating; 46.8 (1,650)

dB (A) Cooling; High 43, Low 32 Cooling; 46

Heating; High 43, Low 35 Heating; 46

Noise Level

Power level dB Cooling; High 54 Cooling; High 59

Heating; High 54 Heating; High 59

Electrical Data Input Power W Cooling; 1,370 (215 - 1,600)

Heating; 1,570 (245 - 2,250)

Running Current A Cooling; 6.5 - 6.3

Heating; 7.3 - 7.1

EER W/W Cooling; 3.21 (4.19 - 3.13)

BTU/hW Cooling; 10.9 (14.3 - 10.7)

COP W/W Heating; 3.50 (3.67 - 3.16)

BTU/hW Heating; 12.0 (12.5 - 10.8)

Starting Current A 7.3

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Unit CS-E15DKDW CU-E15DKD

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 11 - 1/32 (280) 29 - 17/32 (750)

Net Weight lb (kg) 20 (9) 106 (48) Compressor Type — Involute scroll

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Expansion Valve Refrigeration Oil (c.c) — RB68A (360) Refrigerant (R410A) kg (oz) — 1.06 (37.4) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Capillary Tube Flow Rate l/min — —

Air Filter Material

Inner diameter mm 12 — Length m 0.65 —

Width inch (mm) 31 - 15/32 (799) 34 - 7/16 (875) Depth inch (mm) 7 - 7/32 (183) 13 - 19/32 (345)

Motor Type — Brushless (4-pole) Rated Output W — 700

Material ASHT-18 P.P

Motor Type Transistor (8-poles) Transistor (8-poles)

Rate Output W 30 40

Fan Speed Lo (Cool/Heat) rpm 980 / 1,160 —

Me (Cool/Heat) rpm 1,220 / 1,360 — Hi (Cool/Heat) rpm 1,460 / 1,560 660 / 640

Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium (Blue Coated) Fin Type Slit Fin Corrugated Fin Row / Stage (Plate fin configuration, forced draft)

FPI 21 18 Size (W × H × L) mm 610 × 315 × 25.4 871.7 × 711.2 × 22

Length mm — —

Inner Diameter mm — —

Style

inch inch

G ; Half Union 1/2”

L ; Half Union 1/4” G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—— —

2/15 1/28

P.P.

Honeycomb

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—

•

Specifications are subjected to change without notice for further improvement.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

3.2. CS-E18DKDW CU-E18DKD

Unit CS-E18DKDW CU-E18DKD

Cooling Capacity kW

kcal/h

BTU/h

Heating Capacity kW

kcal/h

BTU/h

Moisture Removal l/h

Pint/h

Power Source (Phase, Voltage, Cycle) ø

Airflow Method OUTLET

INTAKE

5.30 (0.90 - 6.00)

4,560 (770 - 5,160)

18,100 (3,070 - 20,500)

6.60 (0.90 - 8.00)

5,680 (770 - 6,880)

22,500 (3,070 - 27,300)

2.9

(6.1)

Single

220 - 230

SIDE VIEW TOP VIEW

Air Volume Lo m3/min (cfm) Cooling; 12.3 (430) —

Heating; 13.0 (460)

Me m3/min (cfm) Cooling; 13.9 (490) —

Heating; 14.6 (520)

Hi m3/min (cfm) Cooling; 15.2 (540) 40.0 (1,410)

Heating; 16.7 (590)

dB (A) Cooling; High 44, Low 37 Cooling; 47

Heating; High 44, Low 37 Heating; 47

Noise Level

Power level dB Cooling; High 57 Cooling; High 60

Heating; High 57 Heating; High 60

Electrical Data Input Power W Cooling; 1,650 (215 - 2,050)

Heating; 1,790 (245 - 2,650)

Running Current A Cooling; 7.7 - 7.5

Heating; 8.3 - 8.1

Piping Connection Port (Flare piping)

EER W/W Cooling; 3.21 (4.19 - 2.93)

BTU/hW Cooling; 11.0 (14.3 - 10.0)

COP W/W Heating; 3.69 (3.67 - 3.02)

BTU/hW Heating; 12.6 (12.5 - 10.3)

Starting Current A 8.3

inch inch

G ; Half Union 1/2”

L ; Half Union 1/4”

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Unit CS-E18DKDW CU-E18DKD

Pipe Size (Flare piping)

Drain Hose

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)

Net Weight lb (kg) 24 (11) 108 (49) Compressor Type — Involute scroll

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Expansion Valve Refrigeration Oil (c.c) — RB68A (360) Refrigerant (R410A) kg (oz) — 1.18 (41.7) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Capillary Tube Flow Rate l/min — —

Air Filter Material

Inner diameter mm 12 — Length m 0.65 —

Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 9 - 1/16 (230) 13 - 19/32 (345)

Motor Type — Brushless (4-pole) Rated Output W — 900

Material ASHT-18 P.P

Motor Type Transistor (8-poles) Transistor (8-poles)

Rate Output W 30 40

Fan Speed Lo (Cool/Heat) rpm 1,170 / 1,240 —

Me (Cool/Heat) rpm 1,330 / 1,395 — Hi (Cool/Heat) rpm 1,450 / 1,580 660 / 640

Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium (Blue Coated) Fin Type Slit Fin Corrugated Fin Row / Stage (Plate fin configuration, forced draft)

FPI 21 16 Size (W × H × L) mm 810 × 315 × 25.4 849.3

Length mm — —

Inner Diameter mm — —

Style

inch inch

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—— —

2/15 2/34

P.P.

Honeycomb

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—

× 714 × 36.4

878

—

•

Specifications are subjected to change without notice for further improvement.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

3.3. CS-E21DKDS CU-E21DKD

Unit CS-E21DKDS CU-E21DKD

Cooling Capacity kW

kcal/h BTU/h

Heating Capacity kW

kcal/h BTU/h

Moisture Removal l/h

Pint/h

Power Source (Phase, Voltage, Cycle) ø

Airflow Method OUTLET

INTAKE

6.30 (0.90 - 7.10)

5,420 (770 - 6,110)

21,500 (3,070 - 24,200)

7.20 (0.90 - 8.50)

6,190 (770 - 7,310)

24,600 (3,070 - 29,000)

3.5

(7.4)

Single

220 - 230

SIDE VIEW TOP VIEW

Air Volume Lo m3/min (cfm) Cooling; 12.5 (440) —

Heating; 13.5 (480)

Me m3/min (cfm) Cooling; 14.4 (510) —

Heating; 14.9 (530)

Hi m3/min (cfm) Cooling; 16.2 (570) Cooling; 42.8 (1,510)

Heating; 17.3 (610) Heating; 41.5 (1,460)

dB (A) Cooling; High 45, Low 37 Cooling; 48

Heating; High 45, Low 37 Heating; 49

Noise Level

Power level dB Cooling; High 58 Cooling; High 61

Heating; High 58 Heating; High 62

Electrical Data Input Power W Cooling; 2,210 (215 - 2,540)

Heating; 2,100 (245 - 2,750)

Running Current A Cooling; 10.4 - 9.9

Heating; 9.7 - 9.3

Piping Connection Port (Flare piping)

EER W/W Cooling; 2.85 (4.19 - 2.80)

BTU/hW Cooling; 9.7 (14.3 - 9.5)

COP W/W Heating; 3.43 (3.67 - 3.09)

BTU/hW Heating; 11.7 (12.5 - 10.5)

Starting Current A 9.7

inch inch

G ; Half Union 1/2”

L ; Half Union 1/4”

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Unit CS-E21DKDS CU-E21DKD

Pipe Size (Flare piping)

Drain Hose

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)

Net Weight lb (kg) 24 (11) 112 (51) Compressor Type — Involute scroll

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Expansion Valve Refrigeration Oil (c.c) — RB68A (360) Refrigerant (R410A) kg (oz) — 1.29 (45.5) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Capillary Tube Flow Rate l/min — —

Air Filter Material

Inner diameter mm 12 — Length m 0.65 —

Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 9 - 1/16 (230) 13 - 19/32 (345)

Motor Type — Brushless (4-pole) Rated Output W — 900

Material ASHT-18 P.P

Motor Type Transistor (8-poles) Transistor (8-poles)

Rate Output W 30 40

Fan Speed Lo (Cool/Heat) rpm 1,170 / 1,270 —

Me (Cool/Heat) rpm 1,355 / 1,400 — Hi (Cool/Heat) rpm 1,520 / 1,610 700 / 680

Tube material Copper Copper Fin material Aluminium (Pre Coat) Aluminium (Blue Coated) Fin Type Slit Fin Corrugated Fin Row / Stage (Plate fin configuration, forced draft)

FPI 19 18 Size (W × H × L) mm 810 × 315 × 25.4 839.5

Length mm — —

Inner Diameter mm — —

Style

inch inch

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—— —

2/15 2/34

P.P.

Honeycomb

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

—

× 714 × 36.4

868

—

•

Specifications are subjected to change without notice for further improvement.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

4 Dimensions

4.1. Indoor Unit & Remote Control

4.1.1. CS-E15DKDW

4.1.2. CS-E18DKDW CS-E21DKDS

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

4.2. Outdoor Unit

4.2.1. CU-E15DKD CU-E18DKD CU-E21DKD

5 Refrigeration Cycle Diagram

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

6 Block Diagram

7 Wiring Diagram

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

8 Operation Details

8.1. Basic Function

Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature.

8.1.1. Internal Setting Temperature

Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes. These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.

Table (a): Auto Operation Mode Setting

Cooling/Soft Dry→Heating -2.0 Heating→Cooling/Soft Dry +2.0

Mode Shift: Temperature Shift (°C)

Table (b): Outdoor Air Temperature Shifting

Mode: Outdoor Temperature, X (°C): Temperature Shift (°C)

Cooling/Soft Dry 38 X 1.50 2.00

Heating 21 X -2.25 -1.50

Table (c): Powerful Mode Shifting

Mode: Period, X (min): Temperature Shift (°C)

Cooling X 20 -2.0

Soft Dry X 20 -1.0

Heating X 20 +3.5

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Manual Operation Auto Operation

30 X 38 1.25 1.25 23 X 30 1.25 1.25

X 23 1.75 1.75

17 X 21 -1.75 -1.00 13 X 17 -0.75 0.00

9 X 13 0.25 0.25

5 X 9 1.25 1.00 1 X 5 0.75 1.00

-3 X 1 1.50 1.00 X -3 1.50 1.00

X 20 0.0

X 20 +3.25

Table (d): Quiet (Lo) Mode Shifting

Mode: Period, X (min): Temperature Shift (°C)

Cooling, Soft Dry 20 min X 50 min -3.0

Table (e): Fan Speed Shifting

Mode: Fan Speed: Temperature Shift (°C)

Cooling Lo -0.25

Soft Dry All +0.25 Heating Lo +1.50

Table (f): Start-Up Shifting

Mode within 60 Minutes from Start-up: Temperature Shift (°C) Cooling/Soft Dry -1.0 Heating +2.0

50 min X 110 min -4.0

110 min X 440 min -5.0

Me-, Me, Me+, Auto 0.00

Hi +0.25

Me-, Me, Me+, Auto +0.75

Hi +0.75

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

8.1.2. Compressor Operation Frequency

Intake Air Temperature - Internal Setting Temperature (°C) Freq. H

Zone Cooling & Soft Dry Heating Cooling Soft Dry Heating Remark

1 -2.0 1.5 1 1 1 2 -1.5 1.0 1 1 1 3 -1.0 0.5 14 8 11 4 -0.5 0.0 20 8 15 5 0.0 -0.5 27 8 22 6 0.5 -1.0 35 11 27 7 1.0 -1.5 43 11 36 8 1.5 -2.0 46 11 39 Fc, Fh

9 2.0 -2.5 46 11 39 Fc, Fh 10 2.5 -3.0 46 11 39 Fc, Fh 11 Nil -3.5 Nil Nil 39 Fh 12 Nil -4.0 Nil Nil 39 Fh

Operating Frequency Calculation Formula:

CompHz = Freq. A × Freq. H + Freq. C

Example Calculation:

Model No.: E18DK

Operation Mode: Cooling

When Intake Air Temperature - Internal setting Temperature:

1.5°C

CompHz = Freq. A × Freq. H + Freq. C

= 1.53 × 46 + 2.5 = 72 Hz (It cuts down less than a decimal point)

Cooling & Soft Dry E18DK E21DK

Freq. A Freq. C Freq. A Freq. C

Low Load (Freq. H 9) 1.2 5.0 1.7 7.0

High Load (Freq. H > 10) 1.53 2.5 2.0 4.0

Heating E18DK E21DK

Freq. A Freq. C Freq. A Freq. C

Low Load (Freq. H 11) 1.6 8.0 1.9 7.0

High Load (Freq. H > 12) 2.2 1.0 2.35 1.0

Freq. Range E18DK E21DK

Cooling Fc 72 96

Operation Range 12 ~ 86 12 ~ 102

Heating Fh 86 92

Operation Range 14 ~ 128 14 ~ 128

Remarks:

When Freq. H is equal to 46 (Cooling), 39 (Heating) or above, the Comp. may run at the freq. higher than Fc or Fh up to max. freq. operation.

Best Amenity Control

Every 90s (Cooling), 120s (Heating) maintain same zone Freq. H + 1 until Fc (46), Fh (39).

8.1.3. Cooling Operation

8.1.3.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C.

•

Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF

•

point +0.5°C.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

8.1.4. Soft Dry Operation

8.1.4.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C.

•

Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF

•

point.

8.1.5. Heating Operation

8.1.5.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting > +1.5°C.

•

Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature < Compressor OFF

•

point -0.5°C.

8.1.6. Automatic Operation

This mode can be set using remote control and the operation is decided by remote control setting temperature, indoor intake air

temperature and outdoor air temperature.

During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect

the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes.

Remote Control Setting Temperature (°C) T1 T2 T3

16 ~ 18 +10 +8 -5 19 ~ 22 +8 +7 -7 23 ~ 26 +7 +6 -7 27 ~ 30 +6 +5 -8

There is a temperature shifting on T1, T2, and T3 if the operation mode judged is changed from Cooling/Soft Dry to Heating or vice verse.

Operation Mode change from Temperature shifts (°C)

Cooling/Soft Dry→Heating -2 Heating→Cooling/Soft Dry +2

Example of operation mode chart adjustment:

From the above table, if remote control setting temperature = 25,

T1 = 25 + 7 = 32; T2 = 25 + 6 = 31; T3 = 25 - 7 = 18

The operation mode chart for this example is as shown in below figure and the operation mode to be performed will depend on indoor intake air temperature and outdoor air temperature at the time when the judgment is made.

8.1.7. Indoor Fan Motor Operation

A. Basic Rotation Speed (rpm)

Required rotation speed for fan is set to respond to the remote control setting (10 rpm unit)

•

[Cooling, Dry, Fan]

Remote Control — O O O O O — — —

Tab (rpm) SHI Hi Me+ Me Me- Lo Lo- SLo SSLo

E18DK 1530 1440 1360 1290 1220 1150 850 760 630 E21DK 1610 1520 1420 1330 1240 1150 890 800 630

[Heating]

Remote Control — O O O O O — — —

Tab (rpm) SSHI SHi Me+ Me Me- Lo Lo- SLo SSLo

E18DK 1590 1560 1480 1410 1340 1270 850 400 300 E21DK 1640 1610 1520 1440 1350 1270 890 400 300

B. Indoor Fan Control

i. Indoor fan control operation outline

1. Cooling / Dry

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2. Heating

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ii. Auto Fan Speed

1. Cooling

2. Heating

Note:

a. UP:

If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21DK), 1480 rpm (E18DK).

•

If move from Maximum, the fan speed no change.

•

In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21DK ), 1480 rpm (E18DK).

•

b. DOWN:

The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm.

•

c. Current Output Fixed:

Maintain at present fan speed.

•

d. Instantaneous Maximum:

Fan speed will be increased to maximum auto fan speed.

•

e. Temperature in ( ) is for Powerful Mode operation.

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iii. Max Capacity Condition

a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi.

1. Indoor intake temperature

24°C.

2. Operation frequency 72 Hz (E18DK), 95 Hz (E21DK) & above.

3. Remote Control setting temperature 16°C.

4. Remote Control setting fan speed Hi.

5. Outdoor temperature

6. Operation start

30°C.

within 30 minutes.

* If any of above conditions is not valid, the condition is ended.

b) During Heating operation, if all to the following condition is fulfilled, the indoor fan speed is set to SSHi.

1. Indoor intake temperature is 17°C or above and less than 23°C.

2. Operation frequency 86 Hz (E18DK), 93 Hz (E21DK) & above.

3. Remote Control setting temperature 30°C.

4. Remote Control setting fan speed Hi.

5. Outdoor temperature < 4°C.

6. Operation start

2 hours.

* If any of above conditions is not valid, the condition is ended.

C. Fan Motor Control

i. Motor specification

High voltage PWM Motor

ii. Feedba ck Control

1. Rotation speed feedback

Immediately after the fan started, rpm is checked and duty is added, and feedba ck control is performed.

iii. Abnormal Detection

1. Condition **Step out signal input

2. Control * Fan stop

3. Return * Restart after 5s

Feedback rotation speed is more than 2550 rpm or below 50 rpm. However, 10s after fan start, rotation abnormality is not detected.

However, in case the fan is stopped by the above conditions within 25s after fan has started, and happened continuously for 7 times, restart will not be performed.

Indoor fan motor lock abnormal (H19)

→

iv. Restart Prohibition Control

Prohibit to restart within 5s after fan stop. (except when power is ON)

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D. Deodorizing Control

i. Control condition

Control at cooling/dry operation and auto fan speed.

No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control prevention.

ii. Operation

The odor status is arranged as below and it is shifted as follow.

* When COMP is ON 1→2→3

(Shift to 4 when COMP is OFF)

* When COMP is OFF 4→5→4

(Shift to 1 when COMP is ON)

* Start from 4 if the Thermostat is OFF during the start operation.

Odor Status 1 2 3 4 5 4 5 4.5.4... 1

Status Shift

according to COMP

Status Shift

according to time (s) Dry zone ON

Fan Speed

Cooling

zone

Cooling

zone

Dry zone OFF SLo OFF

40 50 — 20 90 20 90 .......

OFF

ON OFF ON

Auto Fan Speed

SLo

←→

OFF

SLo OFF .......

8.1.8. Outdoor Fan Motor Operation

Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

Basic Rotation Speed

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8.1.9. Airflow Direction

1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).

2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchan ger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).

Vertical Airflow

Operation Mode Airflow Direction Vane Angle (°)

1 2 3 4 5

Heating Auto with Heat Exchanger A 16

B 50

Temperature C 8

D 8

Manual 8 17 33 49 60

Cooling, Soft Dry and Ion Auto 8~38

Manual 8 17 25 33 38

Mode Judgment in Auto Auto 8

Manual 8 17 25 33 38

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1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. When the air conditioner is stopped using remote control, the vane will shift to close position.

2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position .

Horizontal Airflow

1. Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.

Operation Mode Vane Angle (°)

Heating, with heat exchanger temperature A 68 ~ 112

B 90

Cooling, Soft Dry and Ion 68 ~ 112

2. Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above.

Pattern 1 2 3 4 5 Airflow Direction

Patterns at Remote Control

Vane Angle (°) 90 68 79 101 112

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8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode)

A. Purpose

To provide quiet cooling operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

When “quiet” button at remote control is pressed.

•

Quiet LED illuminates.

b. Quiet operation stop condition

1. When one of the following conditions is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

D. Control contents

1. Fan speed is changed from normal setting to quiet setting of respective fan speed.

This is to reduce sound of Hi, Me, Lo for 3dB.

2. Fan speed for quiet operation is -100 rpm from setting fan speed.

8.1.10.1. Quiet operation under Soft Dry operation (Dry area at Dry Mode)

Automatic Fan Speed (Dry operation)

Manual Fan Speed (Dry operation)

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8.1.10.2. Quiet operation (Heating)

A. Purpose

To provide quiet heating operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

When “quiet” button at remote control is pressed.

•

Quiet LED illuminates.

b. Quiet operation stop condition

1. When one of the following conditions is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

C. Control contents

a. Fan Speed manual

1. Fan speed is changed from normal setting to quiet setting of respective fan speed.

This is to reduce sound of Hi, Me, Lo for 3dB.

2. Fan speed for quiet operation is -100 rpm from setting fan speed.

3. Fan Speed Auto

•

If FM

-100 rpm reduce from normal Heating Auto Fan Speed

•

If FM

maintain RPM

Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.

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8.1.11. Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly.

(a) Cooling Operation

(b) Soft Dry Operation

8.1.12. Delay ON Timer Control

Delay ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time.

Seventy minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.

From the above judgment, the decided operation will start operate earlier than the set time as shown below.

8.1.13. Delay OFF Timer Control

Delay OFF timer can be set using remote control, the unit with timer set will stop operate at set time.

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8.1.14. Auto Restart Control

1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.

2. This type of control is not applicable during ON/OFF Timer setting.

8.1.15. Indication Panel

LED POWER TIMER QUIET POWERFUL ION ALLERGEN

Color Green Orange Orange Orange Green Blue

Light ON Operation ON Timer Setting ON Quiet Mode ON Powerful Mode ON Ion Mode ON Operation ON

Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Ion Mode OFF Operation OFF

Note:

If POWER LED is blinking, the possible operations of the unit are Hot Start, during Deice operation, operation mode

•

judgment, or delay ON timer sampling.

If Timer LED is blinking, there is an abnormality operation occurs.

•

If Ionizer, LED is blinking, there is an abnormality of Ionizer occurs.

•

BUSTER

8.1.16. Auto Operation Switch

1. When the switch is pressed between 0 to 5 seconds, Auto Mode operation starts to function.

2. When the switch is pressed between 5 to 8 seconds, the unit is forced to operate in Cooling Mode.

3. When the switch is pressed between 8 to 11 seconds, the unit will enter forced Heating Mode standby. Press timer decrement button for 5S for the unit to operate in Heating Mode.

4. When the switch is pressed between 11 to 16 seconds and together with the signal from remote control (timer decrement button for 5S), the unit can be changed to different controlling setting (4 type of transmission codes).

5. When the switch is pressed between 16 to 21 seconds, either “H14” error detection selection mode or the remote control signal receiving sound can be cancelled or turned on.

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8.1.17. Indoor Power Relay Control

Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay continues on for three minutes.

However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after power recover and the unit will operate as previous operation condition.

8.1.18. Ionizer Operation

Purpose

To provide fresh air effect to users by discharging minus ion to air.

Control Condition

a. Ionizer Only Operation.

1. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at remote control is pressed.

Fan & ionizer on, ION LED illuminates, but power LED maintain off. (1→2)

However, fan speed can be adjusted later by customer during this operation.

Airflow direction (Horizontal Vane) control:

Follow vane direction control at cooling mode.

Horizontal vane can be changed by customer during ion only operation.

b. Operation Mode + Ionizer Operation.

1. Ionising Operation Start Condition

When air conditioner unit is in “ON” condition (Heat, Cool, Dry, Auto mode) and ION operation button at remote control is pressed. Ionizer on & ION LED illuminates. (3→4)

Power LED also illuminates.

2. Ionising Operation Stop Condition

When one of the following condition is satisfied, ION operation stops.

a. Stopped by ON/OFF switch.

b. Timer OFF activates.

c. ION feedback signal shows error.

3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates

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without ionizer operation.

c. Timer during ionizer operation

Refer to case study in next page for detail.

8.1.18.1. Ionizer Problem Detection Control

i. Purpose

To inform user of ionizer problems and detection.

ii. Two types of problem detection control:

Control Detection Method Protection Recovery

ERROR PROTECTION

(i) Actual ion: ON (i) Actual ion ON for 10s & OFF for

(ii) ion feedback signal:0V(ii) Within 24 counts, if anytime

BREAKDOWN PROTECTION

(i)

Actual ion: OFF

(ii)

ion feedback signal: 5V

30 min. continuously for 24 times (approx. 11 hr. 30 min.)

CONDITION becomes false then count is cleared.

(i) Actual ion OFF 2s (i)

8.1.18.2. Ionizer Operation case study

(i) Actual ion is permanently OFF & ion

LED is blinking.

(ii) Press remote control ion button for

a) ON: Ion LED blink & buzzer = beep b) OFF: Ion LED OFF & buzzer = beep

Case 1: During Air-Con. ON. Air-Cond OFF with abnormal no. H26 is activated with timer LED is blinking permanently.

Case 2: During Air-Con. OFF.

(i)

Abnormal no. H26 is activated with timer LED is blinking permanently for both cases 1 & 2.

(ii) Press remote control ion button for

a) ON: Ion LED blink b) OFF: Ion LED OFF

(iii) Press any remote control button to

a) ON: Buzzer = beep beep beep beep b) OFF: Buzzer = beep beep beep beep

(i) Press ON/OFF button

to OFF

(ii)

Reset power

(iii)

Off by force operation

(i) When anytime

CONDITION becomes false.

(ii) Once recovered, ion &

Timer LED stops blinking permanently.

(iii) Main power reset.

Case 1

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8.2. Protection Control Features

8.2.1. Protection Control For All Operations

8.2.1.1. Time Delay Safety Control

1. The compressor will not start for three minutes after stop of operation.

2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.

8.2.1.2. 30 Seconds Forced Operation

1. Once the compressor starts operation, it will not stop its operation for 30 seconds.

2. However, it can be stopped using remote control or Auto Switch at indoor unit.

8.2.1.3. Total Running Current Control

1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.

2. If the running current does not exceed X value for five seconds, the frequency instructed will be increased.

3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for three minutes.

E21DK E18DK

Operation Mode X(A) Y(A) X(A) Y(A) Cooling/Soft Dry (A) 11.0 15.0 8.8 15.0 Cooling/Soft Dry (B) 9.6 15.0 7.7 15.0 Heating 11.5 17.0 10.8 17.0

4. The first 30 minutes of cooling operation, (A) will be applied.

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8.2.1.4. IPM (Power transistor) Prevention Control

A. Overheating Prevention Control

1. When the IPM temperature rises to 110°C, compressor operation will stop immediately.

2. Compressor operation restarts after three minutes the temperature decreases to 95°C.

B. DC Peak Current Control

1. When electric current to IPM exceed s set value of 25.0 ± 4.0 A, the compressor will stop operate. Then, operation will restart after three minutes.

2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after two minute.

3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. If this condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.

8.2.1.5. Compressor Overheating Prevention Control

Instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below figure.

8.2.1.6. Low Pressure Prevention Control (Gas Leakage Detection)

1. When the conditions listed in below table occur, the compressor stops and restarts after three minutes.

2. If this phenomenon is continuously occurring for twice within 20 minutes, all indoor and outdoor relays will be cut off.

3. This control is not applicable for deice operation.

Conditions E18DK E21DK

Cooling/Soft Dry Heating Cooling/Soft Dry Heating

1. Compressor frequency (Hz) 86 86 102 93

2. Outdoor total running current (A) 1.5 1.5 1.5 1.5

3. Indoor heat exchanger temperature (°C) 20 25 20 25

Note: Conditions 1 and 2 needed to be happened continuously for 5 minutes.

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8.2.1.7. CT Disconnection Detection

1. Control Starting Condition

a. Total Current is below 0.74 ~ 0.94 Amp.

b. Operating Frequency is 72 Hz (E18DK), 95 Hz (E21DK) +1 and above.

c. Continuously for 20s.

2. Control Contents

a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit stop)

3. Control Cancellation Condition

Starting conditio n, (1) is not fulfilled.

8.2.1.8. Low Frequency Protection Control 1

When the compressor operate at frequency lower than 22 Hz for 240 minutes, the operation frequency will be increased to 22 Hz for two minutes.

8.2.1.9. Low Frequency Protection Control 2

When all the below conditions occur, minimum value (Freq. MIN) for the frequency instructed to compressor will change to 30 Hz.

Temperature, T, for: Cooling/Soft Dry Heating Indoor intake air (°C) T 15 or T 30 T 14 or T 28 Outdoor air (°C) T 13 or T 38 T 4orT 24 Indoor heat exchanger (°C) T 30 T 0

8.2.1.10. Minimum Frequency Protection Control

During cooling operation (Anti Freezing control, soft dry) carry out the following operation.

•

1. During remote control setting is less than 28 deg

Indoor Fan Speed

Above Hi minHz = 21

Above Me- minHz = 21

Less than Me- minHz = 18

Auto minHz = 16

2. During Powerful ON

minHz = 22

However, when less than thermo OFF for 120 sec. continuously, the above control will be cancel.

During heating operation, operate the followings control.

•

1. During Remote Control setting is less than 18 deg

Indoor Fan Speed

Above Hi minHz = 30

Above Lo minHz = 25

Less than Lo minHz = 15

2. During Powerful ON

minHz = 35

However, when less than thermo OFF for 100 sec. continuously, the above control will be cancel.

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8.2.2. Protection Control For Cooling & Soft Dry Operation

8.2.2.1. Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.

8.2.2.2. Cooling Overload Control

i. Pipe temperature limitation/restriction

Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)

•

The compressor stop if outdoor pipe temperature exceeds 63°C

•

If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)

•

ii. Electrical part temperature rise protection control

To prevent electrical component temperature rise during cooling overload.

•

Judgement condition is by outdoor temperature (sampled every 10s).

•

Control contents:

•

Outdoor fan speed (switch to zone A and B minimum fan speed).

Outdoor total current (zone C) higher than the specified.

Cancellation condition: When one of above is not satisfied.

•

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8.2.2.3. Anti-Freezing Control

1. When indoor heat exchan ger temperature is lower than 2°C continuously for six minutes, compressor will stop operating.

2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C.

3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation.

4. If indoor heat exchanger temperature is higher than 10°C for five minutes, the fan speed will return to its normal operation.

8.2.2.4. Anti-Dew Formation Control

a) Control 1

During anti-dew formation control, compressor operates at frequency shift as shown below when indoor fan speed is less

•

than Me.

This control is cancelled after started for 420 minutes, or remote control setting temperature or fan speed setting is changed.

•

b) Control 2

When the following conditions occurs for 20 minutes continuously, anti-dew formation is controlled and air vane change

•

Horizontal vane shift to 2nd position and Vertical vane shift to center position.

1. Indoor intake air temperature is 25°C or above and less than 29°C.

2. Outdoor air temperature is less than 30°C.

3. Air vane control: Manual Horizontal Airflow and Manua l Vertical Airflow.

4. Fan speed is quiet Lo.

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8.2.3. Protection Control For Heating Operation

8.2.3.1. Anti Cold Draft Control

Indoor fan speed varies in accordance to indoor heat exchan ger temperature, based on type of air volume and direction, as shown below.

1. Manual Fan Speed

2. Auto Fan Speed

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Note:

a. UP:

If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21DK), 1480 rpm (E18DK).

•

If move from Maximum, the fan speed no change.

•

In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21DK ), 1480 rpm (E18DK).

•

b. DOWN:

The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm.

•

c. Current Output Fixed:

Maintain at present fan speed.

•

d. Instantaneous Maximum:

Fan speed will be increased to maximum auto fan speed.

•

e. Temperature in ( ) is for Powerful Mode operation.

8.2.3.2. Intake Air Temperature Control

Compressor will operate at freq. 86 Hz (E18DK), 92 Hz (E21DK ) or less respectively if either one of the below conditio ns occur:

1. When the indoor intake air temperature is above 10°C and remote control setting fan speed is lower Me-.

2. When the indoor intake air temperature is 30°C or above.

8.2.3.3. Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the below figures. This control will begin one minute after the compressor starts.

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8.2.3.4. Overload Protection Control

The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.

8.2.3.5. Outdoor Temperature Control

Outdoor temperature is detected and the following control is perform.

•

Control operates after more than 1 minute the compressor has started.

•

8.2.3.6. Deice Control

A. Deice operation (Normal Deice Operation)

1. Detection methods

Outdoor heat exchanger temperature sensor, timer.

2. Deice operation time chart

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Notes

a. During deice operation, the relationship between outdoor pipe temperature and time T1 is such operation will

proceed to next stage.

b. The deice will be performed only after 1 hour from when the operation has started.

c. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate

restart).

Outdoor heat exchanger temperature

a 15°C b 18°C c 25°C

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3. Explanation of operation

1) Before the deice is started, compressor frequency is set to the specified value for T0-timer.

2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF.

3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value.

4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency and expansion valve to the specified values.

5) When outdoor heat exchanger temperature exceeds b°C, or 10.5 minutes has passed since the 4-way valve is OFF, operation at timer T5 will be started.

6) After the above 5) operation, if the specified time has passed, the deice operation ending signal will be produced. The comp. Hz is set to the specified value and at the same time outdoor fan motor ON signal is produced.

7) After T6 the deice ending signal is produced, 4-way valve is set to ON, indoor fan is ON, Compressor frequency is FREE, and return to normal heating operation.

4. Deice operation judgement condition

When any of below a, b, c, d condition is satisfied, deice signal is produced.

a. Continuously, outdoor heat exchanger temperature < 3°C for 120 minutes and outdoor heat exchanger temperature <

-5°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.

b. Continuously, outdoor heat exchanger temperature < 3°C for 80 minutes and outdoor heat exchanger temperature < -

6°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.

c. Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -

7°C and outdoor air temperature

-3°C for 3 minutes and Comp. is ON.

d. Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -

8°C for 3 minutes and outdoor air temperature < -3°C and Comp. is ON.

However, the first deice will start only after minimum of 60 minutes in operation.

(2nd deice and onward shall follow above conditions)

B. Auto clean deice

1. Purpose

To improve heating start-up operation by detecting the residual ice on OD heat exchanger and perform deice operation automatically before operation is started by ON Timer.

2. Control Content:

1). Auto deice is performed 15 min. before standby operation (pre-deice operation in 15 min.).

2). When below deice conditions are fulfilled , auto clean deice operation will start.

3). After auto clean deice is completed, standby operation is performed as per load.

4). When deice conditions are not fulfilled , auto clean deice will not happen and will continue with standby operation.

3. Deice condition:

OD air temp. t

0°C.

OD heat exchanger temp.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

0°C for 14 min.

-8°C for 10 min.

4. Auto clean deice time chart

Similar to deice operation 2 except for frequency values.

a. Detection methods

Outdoor heat exchanger temp. sensor, timer, indoor air temp. sensor.

b. Deice operation control time chart.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Notes

1. During deice operation, the relationship between outdoor pipe temperature and time T1 is such proceed to next operation.

2. The deice will be performed only after 1 hour from when the operation has started.

3. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate restart).

Outdoor heat exchanger pipe temperature

a 15°C b 18°C c 25°C

9 Operating Instructions

Installation Precautions

Operation

Precautions

9.1. CS-E15DKDW

Thank you for purchasing Panasonic Air Conditioner

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Definition

To prevent personal injury, injury to others and property damage, the following instructions must be followed.

Incorrect operation due to failure to follow instructions will cause harm or damage, the seriousness of which is classiﬁ ed as below:

SAFETY PRECAUTIONS

Installation Precautions

Do not install, remove and reinstall the unit by yourself.

• Improper installation will cause leakage, electric shock or ﬁ re. Please consult an authorized dealer or specialist for the installation work.

Warning

This sign warns of death

or serious injury.

Caution

• This air conditioner must be earthed. Improper grounding will cause electric shock.

• Ensure that the drainage piping is connected properly. Otherwise, water will leak.

• Current leakage protection equipment must be installed. Otherwise, electric shock or ﬁ re may occur.

• Do not install the unit in a potentially explosive atmosphere.

Operation

This sign warns of injury

or damage to property.

The instructions to be followed are classiﬁ ed by the following symbols:

This symbol denotes

an action that is

PROHIBITED.

• Do not share power outlet.

• Do not modify power cord.

• Do not use an extension cord.

• Do not operate with wet hands.

• Do not insert ﬁ nger or other objects into the indoor or outdoor unit.

• Do not attempt to repair the unit by yourself.

• Do not use rechargeable (Ni-Cd) batteries.

• Keep the remote control away from infants and small children to prevent them from accidentally swallowing the batteries.

Precautions

Warning

Caution

Warning

• Use speciﬁ ed supply cord.

• If the supply cord is damaged or needed to be replaced, it must be replaced by the manufacturer or its service agent or a similarly qualiﬁ ed person in order to avoid a hazard.

• Remove the batteries if the unit is not going to be use for a long period of time.

New batteries of the same type must be

• inserted following the polarity stated to prevent malfunction of the remote control.

• In case of emergency or abnormal condition (burnt, smell, etc) occurs, turn off the power supply.

These symbols denote

actions that are

COMPULSORY.

Safety Regulation

The appliance is not intended for use by young children or inﬁ rm person without supervision. Young children should be supervised to ensure that they do not play with the appliance.

• Do not wash the unit with water, benzene, thinner or scouring powder.

• Do not use for other purposes such as preservation of food.

• Do not use any combustible equipment at airﬂ ow direction.

• Do not sit or place anything on the indoor or outdoor unit.

• Do not expose directly to cold air for a long period.

Caution

• Ventilate the room regularly.

• Pay attention as to whether the installation rack is damaged after long period of usage.

• Switch off the power supply before cleaning or servicing.

• Turn off the power supply if the unit is not used for a long period of time.

Operation Condition (OC)

Use this air conditioner under the following temperature range.

DBT: Dry Bulb Temperature WBT: Wet Bulb Temperature

Maximum Temperature (COOL)

Maximum Temperature (HEAT)

Minimum Temperature (COOL)

Minimum Temperature (HEAT)

Indoor Outdoor

DBT WBT DBT WBT

32 23 43 26

30–2418

16 11 -5 –

16 – -5 -6

IIndoor Unit

Outdoor

Unit

Remote Control

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Note: The illustrations in this manual are for explanation purposes only and may differ from the

actual unit. It is subjected to change without notice for future improvement.

PRODUCT OVERVIEW

ndoor Unit

Front panel

Air filter

Airflow direction louver

Discharged air

Outdoor

Air inlet

(side)

Remote Control

Ion operation

Operation mode

Airflow direction adjustment

Memory reset

Unit

Air inlet

LCD display

Check

Do not touch during operation

(rear)

Ionizer

Air outlet

■ About

Air intake

Supersonic air purifying device

Auto OFF/ON button

N O I

L U F

R E

W O P

T E I

Q R E

M I T

W O P

Receiver

Indicator

QUIET

POWERFUL

ION

TIMERPOWER

SUPER

ALLERU-BUSTER

Transmitter

Temperature setting

Off/On

Quiet operation

Powerful operation

Fan speed selection

Timer setting

Clock setting

Remote Control Preparation

2. Insert

1. Pull out

batteries

(AAA or

R03)

3. Press CLOCK button

4. Set current time

5. Press again to conﬁ rm

• Timer operation will be based on current time set.

• The batteries can be used for approximately 1 year.

• The batteries must be recycled or disposed of properly.

Remote Control Signal

• Make sure it is not obstructed.

• Maximum distances: 10m.

• Certain fluorescent lights may interfere with signal transmission. Consult your dealer.

Auto OFF/ON Button

• To operate the unit if the remote control is misplaced or malfunctioning.

Action

Press once

Press until “beep”

sound and release.

Press until “beep”

sound and release.

Press again until

“beep-beep” sound

and release.

• To OFF, press again the Auto OFF/ ON button.

Operation

mode

Automatic

Operation

Cooling

Operation

Heating

Operation

Troubleshooting

●

Operation delayed for few minutes after restart.

●

Sound like water ﬂ owing during operation.

●

Mist emerges from indoor unit.

●

Noisy during operations.

●

Remote control/display does not work.

●

The unit cannot operate.

●

Outdoor unit emits water/steam.

➤ This is a normal self protection control.

➤ Caused by refrigerant ﬂ ow inside.

➤ Condensation effect due to cooling process.

➤ Installation work could be slanted or front panel didn’t close properly.

➤ Check whether batteries are correctly inserted or need replacement.

➤ Check either circuit breaker is tripped or timer is used correctly.

➤ Condensation or evaporation happens at piping surface.

Auto, Heat, Cool, Dry

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Operation Details

AUTO - Automatic Operation

• The unit will automatically select the operation mode according to the setting, outdoor and room temperature. During operation mode selection, power indicator blinks. For every 30 minutes, the operation mode is reselected.

HEAT - Heating Operation

• Enables you to enjoy the warming

effect at your preferred setting temperature.

• For cold air prevention, air might

not blow out immediately and power indicator blinks when operation starts.

• Also operates in defrost mode

(maximum 10 minutes) where by the power indicator blinks. The melted frost is drained at outdoor unit and indoor fan is stopped.

COOL - Cooling Operation

• Enables you to enjoy the cooling effect at your preferred setting temperature.

DRY - Soft Dry Operation

• Enables you to set the desired temperature at low fan speed which provides you with the dehumidifying surroundings.

HOW TO OPERATE

Auto, Heat, Cool, Dry

Select the desired operation.

AUTO

HEATDRY

COOL

Start the operation.

Set the temperature. (16°C~30°C)

● Supersonic air purifying device (super alleru-buster) operates automatically while the air conditioner is switched on.

● Powerful, Quiet and Ion operations could be activated in all operation modes.

● Press

Hint

●

To save electricity, close the curtains when using air conditioner to prevent sunlight and heat from coming in.

Troubleshooting

●

The room has a peculiar odour.

●

Air conditioner does not cool or heat efﬁ ciently.

button again to stop the operation.

➤ This may be a damp smell emitted by the wall, carpet, furniture or

clothing in the room.

➤ Ensure the temperature has been set correctly. ➤ Ensure windows and doors have been closed properly. ➤ Ensure ﬁ lters are cleaned or replaced when necessary. ➤ Ensure inlet and outlet vents of the units have not been obstructed.

ION

Powerful,

Quiet,

Ion, Fan Speed,

Air Swing

POWERFUL

FAN SPEE

AIR SWING

QUIET

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Powerful, Air Swing

ION

Enables ion operation.

AIR SWING

Adjust the vertical or horizontal airﬂ ow direction louver.

HOW TO OPERATE

Quiet,

Ion, Fan Speed,

QUIET

Enables quiet operation.

POWERFUL

Enables powerful operation.

DFAN SPEED

Select fan speed.

■ Operations Details

POWERFUL

• To achieve setting temperature quickly.

QUIET

• To provide a quiet environment.

ION

• To provide fresh air effect by producing negative ions.

• Ion operation could be activated independently.

• Press

FAN SPEED

• To provide you with the various fan

• There are 5 levels of fan speed in

• Automatic fan speed:

The speed of the indoor fan is

AIR SWING

• To ventilate air in the room.

• There are 5 selections in addition to

• If automatic vertical airﬂ ow direction

• To ventilate air in the room.

• There are 5 selections in addition

• If automatic horizontal airﬂ ow

button to stop the

operation.

speed selections.

addition to automatic fan speed.

automatically adjusted according to the operation.

automatic vertical air ﬂ ow direction.

has been set, the louver swings up and down automatically.

to automatic horizontal air ﬂ ow direction.

direction has been set, the louver swings left and right automatically.

● Powerful and Quiet operations could not be activated at the same time.

● Powerful, Quiet and Ion operations could be cancelled by pressing the respective button again.

• Please do not adjust the vertical and horizontal airﬂ ow direction louver manually.

Hints

●

If you wish to have the cool air blowing directly on you, set the airﬂ ow direction downward but not for an excessive length of time,

as it may harm your health.

●

Approximately 10% of electricity can be saved if you set the temperature 1°C higher in cooling operation or 2°C lower in heating

operation than the desired temperature.

Troubleshooting

●

ION indicator on the indoor unit is blinking.

●

Indoor fan stops occasionally during Automatic Fan

Speed setting.

●

Indoor fan stops occasionally during heating operation.

➤ Press ION button twice. If the indicator is still blinking, please consult

the dealer.

➤ This is an advanced feature that helps to remove smell from the

surrounding area during operation.

➤ To avoids unintended cooling effect.

Timer

CANCEL

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Operation Details

TIMER

• Use the ON timer to turn on the air conditioner at the desired time. This will give you a cooling or warming environment, e.g. when you return from work or wake up.

• When the ON timer is set, operation will start up to 35 minutes before the actual set time.

• Use the OFF timer to stop the air conditioner operation at the desired time. This can save electricity while you are going out or sleeping.

• The set timer will repeat daily once it is set.

• If there is a power failure, you can press SET button to restore the previous setting once the power is resumed.

• If the timer is cancelled, you can restore the previous setting by pressing SET button.

CHECK

• When there is error, the unit stops its operation and timer indicator blinks.

1. Press for 5 seconds.

2. Browse for respective error code, where “beep” sounds are heard.

3. Turn off the power supply and call authorized distributor.

Note: Press the ‘Reset’ button to quit checking.

Unit might operate with limited function depending on error found. (Operation starts, 4 “beep” sounds are heard)

HOW TO OPERATE

Timer

Select ON or OFF timer.

Set the desired time.

Conﬁ rm the setting.

CANCEL

Cancel the selected timer.

● Ensure the clock on the remote control has been set correctly.

● You could use the ON and OFF timers at the same time.

● To cancel either the ON or OFF timer, press

press

or , then

Hint

●

Press CLOCK more than 10 seconds to change the time format from 24 hours to AM/PM format.

●

For your convenience, you could set the air conditioner to operate automatically by using both ON and OFF timer.

Troubleshooting

●

TIMER indicator always on.

●

POWER indicator is blinking 35 minutes before ON

timer is activated.

➤ Timer is activated and the setting will repeat itself daily.

➤ The unit is determining the operation mode by sensing the room

temperature. This happens when it has been set to AUTO operation mode.

Switch off the power supply before cleaning

FRONT PANEL

INDOOR UNIT

AIR FILTER

SUPERSONIC AIR PURIFYING DEVICE

IONIZER

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

CARE & CLEANING

Switch off the power supply before cleaning

AIR FILTER

Vacuum, wash and dry.

Remove

SUPERSONIC AIR PURIFYING DEVICE

Vacuum the super alleru-buster ﬁ lter.

Remove

Vacuum, wash and dry the frame.

FRONT PANEL

Raise and pull to remove. Wash and dry.

ION

OWE

UIE

TIM

INDOOR UNIT

Wipe gently.

IONIZER

Clean with cotton bud.

■ Washing Instructions

• Do not use benzene, thinner or scouring powder.

• Use soaps or neutral household detergent (

• Do not use water with temperature higher than 40°C.

INDOOR UNIT

• Wipe the unit gently with a soft, dry cloth.

AIR FILTER

• It is recommended to clean the air ﬁ lters once every 2 weeks.

• Purchase the replacement ﬁ lter if it is damaged.

Part no.: CWD001144

SUPER ALLERU-BUSTER

• It is recommended to clean the ﬁ lter every 6 months.

• Replace the ﬁ lter every 3 years or purchase the replacement ﬁ lter if it is damaged.

Part no.: CZ-SA13P

IONIZER

• It is recommended to clean the ionizer every 6 months.

pH7) only.

≃

■ Preparation for extended Non-operation

• Operate the unit for 2~3 hours using ion operation to dry the internal parts.

• Turn off the power supply.

• Remove the remote control batteries.

■ Pre-season Inspection

• This inspection is recommended before operating the air conditioner at every season.

• Check if the remote control batteries needed to be replaced.

• Ensure there is no obstruction at all air intake and outlet vents.

• After the start of operation for 15 minutes, it is normal if the temperature differences between air intake and outlet vents at indoor unit is:-

Operation Temperature

Cooling

Heating 14°C

8°C

Hints

●

Clean the ﬁ lter regularly as dirty ﬁ lters will cause unpuriﬁ ed air, low cooling or heating capacity, unpleasant smells and higher

energy consumption.

●

The unit will become dirty and the performance of the unit will decrease after used for several seasons. Please consult an

authorized dealer to perform seasonal inspections in addition to regular cleaning.

●

This air conditioner is equipped with a built-in surge protective device. However, in order to further protect your air conditioner

from being damaged by abnormally strong lightning activity, you may switch off the power supply.

9.2. CS-E18DKDW CS-E21DKDS

Installation Precautions

Operation

Precautions

Thank you for purchasing Panasonic Air Conditioner

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Definition

To prevent personal injury, injury to others and property damage, the following instructions must be followed.

Incorrect operation due to failure to follow instructions will cause harm or damage, the seriousness of which is classiﬁ ed as below:

Warning

This sign warns of death

or serious injury.

SAFETY PRECAUTIONS

Installation Precautions

Do not install, remove and reinstall the unit by yourself.

• Improper installation will cause leakage, electric shock or ﬁ re. Please consult an authorized dealer or specialist for the installation work.

• This air conditioner must be earthed. Improper grounding will cause electric shock.

• Ensure that the drainage piping is connected properly. Otherwise, water will leak.

• Current leakage protection equipment must be installed. Otherwise, electric shock or ﬁ re may occur.

• Do not install the unit in a potentially explosive atmosphere.

Caution

Operation

This sign warns of injury

or damage to property.

The instructions to be followed are classiﬁ ed by the following symbols:

This symbol denotes

an action that is

PROHIBITED.

• Do not share power outlet.

• Do not modify power cord.

• Do not use an extension cord.

• Do not operate with wet hands.

• Do not insert ﬁ nger or other objects into the indoor or outdoor unit.

• Do not attempt to repair the unit by yourself.

• Do not use rechargeable (Ni-Cd) batteries.

• Keep the remote control away from infants and small children to prevent them from accidentally swallowing the batteries.

Precautions

Warning

Caution

Warning

• Use speciﬁ ed supply cord.

• If the supply cord is damaged or needed to be replaced, it must be replaced by the manufacturer or its service agent or a similarly qualiﬁ ed person in order to avoid a hazard.

• Remove the batteries if the unit is not going to be use for a long period of time.

New batteries of the same type must be

• inserted following the polarity stated to prevent malfunction of the remote control.

• In case of emergency or abnormal condition (burnt, smell, etc) occurs, turn off the power supply.

These symbols denote

actions that are

COMPULSORY.

• Do not wash the unit with water, benzene, thinner or scouring powder.

• Do not use for other purposes such as preservation of food.

• Do not use any combustible equipment at airﬂ ow direction.

• Do not sit or place anything on the indoor or outdoor unit.

• Do not expose directly to cold air for a long period.

Safety Regulation

The appliance is not intended for use by young children or inﬁ rm person without supervision. Young children should be supervised to ensure that they do not play with the appliance.

Caution

• Ventilate the room regularly.

• Pay attention as to whether the installation rack is damaged after long period of usage.

• Switch off the power supply before cleaning or servicing.

• Turn off the power supply if the unit is not used for a long period of time.

Operation Condition (OC)

Use this air conditioner under the following temperature range.

DBT: Dry Bulb Temperature WBT: Wet Bulb Temperature

Maximum Temperature (COOL)

Maximum Temperature (HEAT)

Minimum Temperature (COOL)

Minimum Temperature (HEAT)

Indoor Outdoor

DBT WBT DBT WBT

32 23 43 26

30–2418

16 11 -5 –

1 6 – - 5 - 6

Outdoor

Unit

IIndoor Unit

Remote Control

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Note: The illustrations in this manual are for explanation purposes only and may differ from the

actual unit. It is subjected to change without notice for future improvement.

PRODUCT OVERVIEW

ndoor Unit

Front panel

Air filter

Discharged air

Outdoor

Air inlet

(side)

Remote Control

Operation mode

Airflow direction adjustment

Memory reset

Ion operation

Airflow direction louver

Unit

Air inlet

LCD display

Check

Do not touch during operation

(rear)

Ionizer

Air outlet

Air intake

Supersonic air purifying device

Auto OFF/ON button

Receiver

Indicator

QUIET

TIMERPOWER

POWERFUL

Transmitter

Temperature setting

Off/On

Quiet operation

Powerful operation

Fan speed selection

Timer setting

Clock setting

ION

SUPER

ALLERU-BUSTER

■ About

Remote Control Preparation

2. Insert

1. Pull out

3. Press CLOCK button

5. Press again to conﬁ rm

• Timer operation will be based on current time set.

• The batteries can be used for approximately 1 year.

• The batteries must be recycled or disposed of properly.

Remote Control Signal

• Make sure it is not obstructed.

• Maximum distances: 10m.

• Certain fluorescent lights may interfere with signal transmission. Consult your dealer.

Auto OFF/ON Button

• To operate the unit if the remote control is misplaced or malfunctioning.

Action

Press once

Press until “beep”

sound and release.

Press until “beep”

sound and release.

Press again until

“beep-beep” sound

and release.

• To OFF, press again the Auto OFF/ ON button.

batteries

(AAA or

R03)

4. Set current time

Operation

mode

Automatic

Operation

Cooling

Operation

Heating

Operation

Troubleshooting

●

Operation delayed for few minutes after restart.

●

Sound like water ﬂ owing during operation.

●

Mist emerges from indoor unit.

●

Noisy during operations.

●

Remote control/display does not work.

●

The unit cannot operate.

●

Outdoor unit emits water/steam.

➤ This is a normal self protection control.

➤ Caused by refrigerant ﬂ ow inside.

➤ Condensation effect due to cooling process.

➤ Installation work could be slanted or front panel didn’t close properly.

➤ Check whether batteries are correctly inserted or need replacement.

➤ Check either circuit breaker is tripped or timer is used correctly.

➤ Condensation or evaporation happens at piping surface.

Auto, Heat, Cool, Dry

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Operation Details

AUTO - Automatic Operation

HEAT - Heating Operation

• Enables you to enjoy the warming

effect at your preferred setting temperature.

• For cold air prevention, air might

not blow out immediately and power indicator blinks when operation starts.

• Also operates in defrost mode

(maximum 10 minutes) where by the power indicator blinks. The melted frost is drained at outdoor unit and indoor fan is stopped.

COOL - Cooling Operation

• Enables you to enjoy the cooling effect at your preferred setting temperature.

DRY - Soft Dry Operation

• Enables you to set the desired temperature at low fan speed which provides you with the dehumidifying surroundings.

HOW TO OPERATE

Auto, Heat, Cool, Dry

Select the desired operation.

AUTO

HEATDRY

COOL

Start the operation.

Set the temperature. (16°C~30°C)

● Supersonic air purifying device (super alleru-buster) operates automatically while the air conditioner is switched on.

● Powerful, Quiet and Ion operations could be activated in all operation modes.

● Press

Hint

●

To save electricity, close the curtains when using air conditioner to prevent sunlight and heat from coming in.

Troubleshooting

●

The room has a peculiar odour.

●

Air conditioner does not cool or heat efﬁ ciently.

button again to stop the operation.

➤ This may be a damp smell emitted by the wall, carpet, furniture or

clothing in the room.

ION

Powerful,

Quiet,

Ion, Fan Speed,

Air Swing

POWERFUL

FAN SPEE

AIR SWING

QUIET

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Powerful, Air Swing

ION

Enables ion operation.

AIR SWING

Adjust the vertical or horizontal airﬂ ow direction louver.

HOW TO OPERATE

Quiet,

Ion, Fan Speed,

QUIET

Enables quiet operation.

POWERFUL

Enables powerful operation.

DFAN SPEED

Select fan speed.

■ Operations Details

POWERFUL

• To achieve setting temperature quickly.

QUIET

• To provide a quiet environment.

ION

• To provide fresh air effect by producing negative ions.

• Ion operation could be activated independently.

• Press

FAN SPEED

• To provide you with the various fan

• There are 5 levels of fan speed in

• Automatic fan speed:

The speed of the indoor fan is

AIR SWING

• To ventilate air in the room.

• There are 5 selections in addition to

• If automatic vertical airﬂ ow direction

• To ventilate air in the room.

• There are 5 selections in addition

• If automatic horizontal airﬂ ow

button to stop the

operation.

speed selections.

addition to automatic fan speed.

automatically adjusted according to the operation.

automatic vertical air ﬂ ow direction.

has been set, the louver swings up and down automatically.

to automatic horizontal air ﬂ ow direction.

direction has been set, the louver swings left and right automatically.

● Powerful and Quiet operations could not be activated at the same time.

● Powerful, Quiet and Ion operations could be cancelled by pressing the respective button again.

• Please do not adjust the vertical and horizontal airﬂ ow direction louver manually.

Hints

●

If you wish to have the cool air blowing directly on you, set the airﬂ ow direction downward but not for an excessive length of time,

as it may harm your health.

●

Approximately 10% of electricity can be saved if you set the temperature 1°C higher in cooling operation or 2°C lower in heating

operation than the desired temperature.

Troubleshooting

●

ION indicator on the indoor unit is blinking.

●

Indoor fan stops occasionally during Automatic Fan

Speed setting.

●

Indoor fan stops occasionally during heating operation.

➤ Press ION button twice. If the indicator is still blinking, please consult

the dealer.

➤ This is an advanced feature that helps to remove smell from the

surrounding area during operation.

➤ To avoids unintended cooling effect.

Timer

CANCEL

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

■ Operation Details

TIMER

• Use the ON timer to turn on the air conditioner at the desired time. This will give you a cooling or warming environment, e.g. when you return from work or wake up.

• When the ON timer is set, operation will start up to 35 minutes before the actual set time.

• Use the OFF timer to stop the air conditioner operation at the desired time. This can save electricity while you are going out or sleeping.

• The set timer will repeat daily once it is set.

• If there is a power failure, you can press SET button to restore the previous setting once the power is resumed.

• If the timer is cancelled, you can restore the previous setting by pressing SET button.

CHECK

• When there is error, the unit stops its operation and timer indicator blinks.

1. Press for 5 seconds.

HOW TO OPERATE

Timer

Select ON or OFF timer.

Set the desired time.

Conﬁ rm the setting.

2. Browse for respective error code, where “beep” sounds are heard.

3. Turn off the power supply and call authorized distributor.

Note: Press the ‘Reset’ button to quit checking.

Unit might operate with limited function depending on error found. (Operation starts, 4 “beep” sounds are heard)

Hint

●

Press CLOCK more than 10 seconds to change the time format from 24 hours to AM/PM format.

●

For your convenience, you could set the air conditioner to operate automatically by using both ON and OFF timer.

Troubleshooting

●

TIMER indicator always on.

●

POWER indicator is blinking 35 minutes before ON

timer is activated.

CANCEL

Cancel the selected timer.

● Ensure the clock on the remote control has been set correctly.

● You could use the ON and OFF timers at the same time.

● To cancel either the ON or OFF timer, press

press

➤ Timer is activated and the setting will repeat itself daily.

➤ The unit is determining the operation mode by sensing the room

temperature. This happens when it has been set to AUTO operation mode.

or , then

SUPERSONIC AIR PURIFYING DEVICE

AIR FILTER

IONIZER

FRONT PANEL

Switch off the power supply before cleaning

INDOOR UNIT

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

CARE & CLEANING

Switch off the power supply before cleaning

AIR FILTER

Vacuum, wash and dry.

Remove

SUPERSONIC AIR PURIFYING DEVICE

Vacuum the super alleru-buster ﬁ lter.

Remove

Vacuum, wash and dry the frame.

FRONT PANEL

Raise and pull to remove. Wash and dry.

Remove

INDOOR UNIT

Wipe gently.

IONIZER

Clean with cotton bud.

■ Washing Instructions

• Do not use benzene, thinner or scouring powder.

• Use soaps or neutral household detergent (

• Do not use water with temperature higher than 40°C.

INDOOR UNIT

• Wipe the unit gently with a soft, dry cloth.

AIR FILTER

• It is recommended to clean the air ﬁ lters once every 2 weeks.

• Purchase the replacement ﬁ lter if it is damaged.

Part no.: CWD001137 (Left)

CWD001138 (Right)

SUPER ALLERU-BUSTER

• It is recommended to clean the ﬁ lter every 6 months.

• Replace the ﬁ lter every 3 years or purchase the replacement ﬁ lter if it is damaged.

Part no.: CZ-SA13P

IONIZER

• It is recommended to clean the ionizer every 6 months.

■ Preparation for extended Non-operation

• Operate the unit for 2~3 hours using ion operation to dry the internal parts.

• Turn off the power supply.

• Remove the remote control batteries.

■ Pre-season Inspection

• This inspection is recommended before operating the air conditioner at every season.

• Check if the remote control batteries needed to be replaced.

• Ensure there is no obstruction at all air intake and outlet vents.

• After the start of operation for 15 minutes, it is normal if the temperature differences between air intake and outlet vents at indoor unit is:-

Operation Temperature

pH7) only.

≃

Cooling

Heating 14°C

8°C

Hints

●

Clean the ﬁ lter regularly as dirty ﬁ lters will cause unpuriﬁ ed air, low cooling or heating capacity, unpleasant smells and higher

energy consumption.

●

The unit will become dirty and the performance of the unit will decrease after used for several seasons. Please consult an

authorized dealer to perform seasonal inspections in addition to regular cleaning.

●

This air conditioner is equipped with a built-in surge protective device. However, in order to further protect your air conditioner

from being damaged by abnormally strong lightning activity, you may switch off the power supply.

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10 Installation And Servicing Air Conditioner Using R410A

10.1. Outline

10.1.1. About R410A Refrigerant

1. Converting air conditioners to R410A Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been taken around the world to prevent this destruction. The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, therefore, possesses this ozonedestroying potential. International regulations (the Montreal Protocol on Ozone-Damaging Substances) and the domestic laws of various countries call for the early substitution of R22 by a refrigerant which will not harm the ozone layer.

In ACs, the HFC refrigerant which has become the mainstream alternative is called R410A.Compared with R22, the

•

pressure of R410A is approximately 1.6 times as high at the same refrigerant temperature, but the energy efficiency is about the same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HFC refrigerant. Another typical HFC refrigerant is R407C. While the energy efficiency of R407C is somewhat inferior to that of R410A, it offers the advantage of having pressure characteristics which are about the same as those of R22, and is used mainly in packaged ACs.

2. The characteristics of HFC (R410A) refrigerants

a. Chemical characteristics

The chemical characteristics of R410A are similar to those of R22 in that both are chemically stable, non-flammable refrigerants with low toxicity. However, just like R22, the specific gravity of R410A gas is heavier than that of air. Becaus e of this, it can cause an oxygen deficiency if it leaks into a closed room since it collects in the lower area of the room. It also generates toxic gas when it is directly exposed to a flame, so it must be used in a well ventilated environment where it will not collect.

Table 1 Physical comparison of R410A and R22

Composition (wt%) R32/R125 (50/50) R22 (100) Boiling point (°C) -51.4 -40.8 Vaporizing pressure (25°C) 1.56 Mpa (15.9 kgf/cm2) 0.94 Mpa (9.6 kgf/cm2) Saturated vapor density 64.0 kg/m Flammability Non-flammable Non-flammable Ozone-destroying point (ODP) 0 0.055 Global-warming point (GWP) 1730 1700

R410A R22

44.4 kg/m

b. Compositional change (pseudo-azeotropic characteristics)

R410A is a pseudo-azeotropic mixture comprising the two components R32 and R125. Multi-component refrigerants with these chemical characteristics exhibit little compositional change even from phase changes due to vaporization (or condensation), which means that there is little change in the circulating refrigerant composition even when the refrigerant leaks from the gaseous section of the piping. Accordingly, R410A can be handled in almost the same manner as the single-component refrigerant R22. However, when charging, because there is a slight change in composition between the gas phase and the liquid phase inside a cylinder or other container, charging should basically begin with the liquid side.

c. Pressure characteristics

As seen in Table 2, the gas pressure of R410A is approximately 1.6 times as high as that of R22 at the same refrigerant temperature, which means that special R410A tools and materials with high-pressure specifications must be used for all refrigerant piping work and servicing.

Table 2 Comparison of R410A and R22 saturated vapor density

Refrigerant Temperature (°C) R410A R22

-20 0.30 0.14 0 0.70 0.40

20 1.35 0.81 40 2.32 1.43 60 3.73 2.33 65 4.15 2.60

Unit: MPa

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d. R410A refrigerating machine oil

Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils which have a high compatibility with R410A are used as refrigerating machine oil. Because of the high hygroscopic property of synthetic oil, more care must be taken in its handlin g than was necessary with conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral oil or alkylbenzene, causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circumstances.

10.1.2. Safety Measures When Installing/Servicing Refrigerant Piping

Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mistake in installation or servicing could result in a major accident. It is essential that you use R410A tools and materials, and that you observe the following precautions to ensure safety.

1. Do not use any refrigerant other than R410A in ACs that have been used with R410A.

2. If any refrigerant gas leaks while you are working, ventilate the room. Toxic gas may be generated if refrigerant gas is exposed to a direct flame.

3. When installing or transferring an AC, do not allow any air or substance other than R410A to mix into the refrigeration cycle. If it does, the pressure in the refrigeration cycle can become abnormally high, possibly causing an explosion and/or injury.

4. After finishing the installation, check to make sure there is no refrigerant gas leaking.

5. When installing or transferring an AC, follow the instructions in the installation instructions carefully. Incorrect installation can result in an abnormal refrigeration cycle or water leakage, electric shock, fire, etc.

6. Do not perform any alterations on the AC unit under any circumstances. Have all repair work done by a specialist. Incorrect repairs can result in an water leakage, electric shock, fire, etc.

10.2. Tools For Installing/Servicing Refrigerant Piping

10.2.1. Necessary Tools

In order to prevent an R410A AC from mistakenly being charged with any other refrigerant, the diameter of the 3-way valve service port on the outdoor unit has been changed. Also, to increase its ability to withstand pressure, the opposing dimensions have been changed for the refrigerant pipe flaring size and flare nut. Accordingly, when installing or servicing refrigerant piping, you must have both the R410A and ordinary tools listed below.

Type of work Ordinary tools R410A tools

Flaring Flaring tool (clutch type), pipe cutter,

Bending, connecting pipes Torque wrench (nominal diameter 1/4,

Air purging Vacuum pump. Hexagonal wrench

Gas leak inspection Gas leak inspection fluid or soapy water Electric gas leak detector for HFC

*1) You can use the conventional (R22) flaring tool. If you need to buy a new tool, buy the R410A type.

*2) Use when it is necessary to detect small gas leaks.

For other installation work, you should have the usual tools, such as screwdrivers (+,-), a metal-cutting saw, an electrical drill, a hole core drill (65 or 70 dia.), a tape measure, a level, a thermometer, a clamp meter, an insulation tester, a voltmeter, etc.

Type of work Ordinary tools R410A tools

Refrigerant charging Electronic scale for refrigerant charging.

Brazing (Replacing refrigerating cycle part*1)

Table 3 Tools for installation, transferring or replacement

reamer

3/8,1/2). Fixed spanner (opposing sides 12 mm, 17 mm, 19 mm). Adjustable wrench, Spring bender

(opposing sides 4 mm)

Table 4 Tools for serving

Nitrogen blow set (be sure to use nitrogen blowing for all brazing), and brazing machine

Copper pipe gauge for clearance Adjustment, flaring tool (clutch type)*1)

Manifold gauge, charging hose, vacuum pump adaptor

refrigerant*2)

Refrigerant cylinder. Charging orifice and packing for refrigerant cylinder

*1) Always replace the dryer of the outdoor unit at the same time. The replacement dryer is wrapped in a vacuum pack. Replace it last among the refrigerating cycle parts. Start brazing as soon as you have opened the vacuum pack, and begin the vacuuming operation within 2 hours.

10.2.2. R410A Tools

1. Copper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type))

This gauge makes it easy to set the clearance for the

•

copper tube to 1.0-1.5 mm from the clamp bar of the flaring tool.

2. Flaring tool (clutch type)

In the R410A flaring tool, the receiving hole for the

•

clamp bar is enlarged so the clearance from the clamp bar can be set to 0-0.5 mm, and the spring inside the tool is strengthened to increase the strength of the pipeexpanding torque. This flaring tools can also be used with R22 piping, so we recommend that you select it if you are buying a new flaring tool.

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Fig. 1 Copper tube gauge for clearance adjustment

3. Torque wrenches

Table 5

Conventional wrenches R410A wrenches For 1/4 (opposite side x torque) 17 mm x 18 N.m (180 kgf.cm) 17 mm x 18 N.m (180 kgf.cm) For 3/8 (opposite side x torque) 22 mm x 42 N.m (420 kgf.cm) 22 mm x 42 N.m (420 kgf.cm) For 1/2 (opposite side x torque) 24 mm x 55 N.m (550 kgf.cm) 26 mm x 55 N.m (550 kgf.cm)

4. Manifold gauge

Because the pressure is higher for the R410A type, the conventional type cannot be used.

•

Table 6 Difference between R410A and conventional high / low-pressure gauges

High-pressure gauge (red) -76 cmHg - 35 kgf/cm

Low-pressure gauge (blue) -76 cmHg - 17 kgf/cm

Conventional gauges R410A gauges

Fig. 2 Flaring tool (clutch type)

Fig. 3 Torque wrenches

-0.1 - 5.3 Mpa -76 cmHg - 53 kgf/cm

-0.1 - 3.8 Mpa -76 cmHg - 38 kgf/cm

The shape of the manifold ports has been changed to prevent the possibility of mistakenly charging with another type of

•

refrigerant.

Table 7 Difference between R410A and conventional manifold port size

Port size 7/16 UNF 20 threads 1/2 UNF 20 threads

Conventional gauges R410A gauges

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5. Charging hose

The pressure resistance of the charging hose has been

•

raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.

Table 8 Difference between R410A and conventional charging hoses

Pressure resistance

Material NBR rubber HNBR rubber Nylon coating inside

Working pressure 3.4 MPa (35 kgf/cm3) 5.1 MPa (52 kgf/cm3) Bursting pressure 17.2 MPa (175 kgf/cm3) 27.4 MPa (280 kgf/cm3)

6. Vacuum pump adaptor

When using a vacuum pump for R410A , it is necessary

•

to install an electromagnetic valve to prevent the vacuum pump oil from flowing back into the charging hose. The vacuum pump adaptor is installed for that purpose. if the vacuum pump oil (mineral oil) becomes mixed with R410A, it will damage the unit.

Fig. 4 Manifold gauge charging hose

Conventional hoses R410A hoses

7. Electric gas leak detector for HFC refrigerant

The leak detector and halide torch that were used with

•

CFC and HCFC cannot be used with R410A (because there is no chlorine in the refrigerant).

The present R134a leak detector can be used, but the

•

detection sensitivity will be lower (setting the sensitivity for R134a at 1, the level for R410A will drop to 0.6).

For detecting small amounts of gas leakage, use the

•

electric gas leak detector for HFC refrigerant. (Detection sensitivity with R410A is about 23 g/year).

Fig. 5 Vacuum pump adaptor

Fig. 6 Electric gas leak detector for HFC refrigerant

8. Electronic scale for refrigerant charging

Because of the high pressure and fast vaporizing speed

•

of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinde r when charging is done using the charging cylinde r method, causing bubbles to form in the measurement scale glass and making it difficult to see the reading. (Naturally, the conventional R22 charging cylinder cannot be used because of the differences in the pressure resistance, scale gradation, connecting port size, etc.)

The electronic scale has been strengthened by using a

•

structure in which the weight detector for the refrigerant cylinder is held by four supports. It is also equipped with two connection ports, one for R22 (7/16 UNF, 20 threads) and one for R410A (1/2 UNF, 20 threads), so it can also be used for conventional refrigerant charging.

There are two types of electronic scales, one for 10-kg

•

cylinders and one for 20-kg cylinders. (The 10-kg cylinder is recommended.)

Refrigerant charging is done manually by opening and closing the valve.

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Fig. 7 Electronic scale for refrigerant charging

9. Refrigerant cylinders

The R410A cylinde rs are labeled with the refrigerant

•

name, and the coating color of the cylinder protector is pink, which is the color stipulated by ARI of the U.S.

Cylinders equipped with a siphon tube are available to

•

allow the cylinder to stand upright for liquid refrigerant charging.

10. Charging orifice and packing for refrigerant cylinders

The charging orifice must match the size of the charging

•

hose fitting (1/2 UNF, 20 threads).

The packing must also be made of an HFC-resistant

•

material.

Fig. 8 Refrigerant cylinders

Fig. 9 Charging orifice and packing

10.2.3. R410A Tools Which Are Usable for R22 Models

Table 9 R410A tools which are usable for R22 models

R410A tools Usable for R22 models (1) Copper tube gauge for clearance adjustment OK (2) Flaring tool (clutch type) OK (3) Manifold gauge NG (4) Charging hose NG (5) Vacuum pump adaptor OK (6) Electric gas leak detector for HFC refrigerant NG (7) Electronic scale for refrigerant charging OK (8) Refrigerant cylinder NG (9) Charging orifice and packing for refrigerant cylinder NG

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10.3. Refrigerant Piping Work

10.3.1. Piping Materials

It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not use pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries. Because the pressure of ACs using R410A is higher than those using R22, it is essential that you select materials that are appropriate for these standards. The thickness of the copper tubing used for R410A is shown in Table 10. Please be aware that tubing with a thickness of only 0.7 mm is also available on the market, but this should never be used.

Soft pipe Thickness (mm)

Nominal diameter Outside diameter (mm) R410A (Reference) R22

1/4 6.35 0.80 0.80 3/8 9.52 0.80 0.80 1/2 12.7 0.80 0.80

10.3.2. Processing and Connecting Piping Materials

When working with refrigerant piping, the following points must be carefully observed: no moisture od dust must be allowed to enter the piping, and there must be no refrigerant leaks.

1. Procedure and precautions for flaring work

a. Cut the pipe

Use a pipe cutter, and cut slowly so the pipe will not be deformed.

b. Remove burrs and clean shavings from the cut surface

If the shape of the pipe end is poor after removing burrs, or if shavings adhere to the flared area, it may lead to refrigerant leaks. To prevent this, turn the cut surface downward and remove burrs, then clean the surface, carefully.

c. Insert the flare nut (be sure to use the same nut that is

used on the AC unit)

d. Flaring

Check the clamp bar and the cleanliness of the copper pipe. Be sure to use the clamp bar to do the flaring with accuracy. Use either an R410A flaring tool, or a conventional flaring tool. flaring tools come in different sizes, so be sure to check the size before using. When using a conventional flaring tool, use the copper pipe gauge for clearance adjustment, etc., to ensure the correct A dimension (see Fig. 10)

Table 10 Copper tube thickness (mm)

Fig. 10 Flaring dimensions

Fig. 11 Relation between the flare nut structure and flaring tool end

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Nominal

diameter

1/4 6.35 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 3/8 9.52 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 1/2 12.70 0.8 0 - 0.5 1.0 - 1.5 2.0 - 2.5

Nominal

diameter

1/4 6.35 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 3/8 9.52 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 1/2 12.70 0.8 0 - 0.5 0.5 - 1.0 1.5 - 2.0

Nominal

diameter

1/4 6.35 0.8 9.1 9.2 6.5 13 17 3/8 9.52 0.8 13.2 13.5 9.7 20 22 1/2 12.70 0.8 16.6 16.0 12.9 23 26

Nominal

diameter

1/4 6.35 0.8 9.0 9.2 6.5 13 17 3/8 9.52 0.8 13.0 13.5 9.7 20 22 1/2 12.70 0.8 16.2 16.0 12.9 20 24

diameter (mm)

Outside

diameter

Outside

diameter

Outside

(mm)

Table 13 R410A flare and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 14 R22 flare and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 11 R410A flaring dimensions

Wall thickness

(mm)

Table 12 R22 flaring dimensions

Wall thickness

(mm)

A +0, -0.4 B

R410A flaring

tool, clutch type

R410A flaring

tool, clutch type

dimension

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

dimension

Flare nut

width

Flare nut

width

2. Procedure and precautions for flare connection

a. Check to make sure there is no scratches, dust, etc., on the flare and union.

b. Align the flared surface with the axial center of the union.

c. Use a torque wrench, and tighten to the specified torque. The tightening torque for R410A is the same as the conventional

torque value for R22. Be careful, because if the torque is too weak, it may lead to a gas leak. If it is too strong, it may split the flare nut or make it impossible to remove the flare nut.

Nominal

diameter

1/4 6.35 14 - 18 (140 - 180) 18 (180) 3/8 9.52 33 - 42 (330 -420) 42 (420) 1/2 12.70 55 (550) 55 (550)

Table 15 R410A tightening torque

Outside

diameter (mm)

Tightening torque

N.m (kgf.cm)

Torque wrench tightening torque

N.m (kgf.cm)

10.3.3. Storing and Managing Piping Materials

1. Types of piping and their storage The following is a general classification of the refrigerant pipe materials used for ACs.

Because the gas pressure of R410A is approximately 1.6 times as high as that of R22, copper pipes with the thickness shown in Table 10, and with minimal impurities must be used. Care must also be taken during storage to ensure that pipes are not crushed, deformed, or scratched, and that no dust, moisture or other substance enters the pipe interior. When storing sheathed copper pipes or plain copper pipes, seal the openings by pinching or taping them securely.

2. Makings and management

a. Sheathed copper pipes and copper-element pipes

When using these pipes, check to make sure that they are the stipulated thickness. For flare nuts, be sure to used the same nut that is used on the AC unit.

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b. Copper pipes

Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use.

3. Precautions during refrigerant piping work Take the following precautions on-site when connecting pipes. (Keep in mind that the need to control the entry of moisture and dust is even more important that in conventional piping).

a. Keep the open ends of all pipes sealed until connection with AC equipment is complete.

b. Take special care when doing piping work on rainy days. The entering of moisture will degrade the refrigerating machine oil,

and lead to malfunctions in the equipment.

c. Complete all pipe connections in as short a time as possible. If the pipe must be left standing for a long time after removing

the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump.

10.4. Installation, Transferring, Servicing

10.4.1. Inspecting Gas Leaks with a Vacuum Pump for New Installations (Using New

Refrigerant Piping)

1. From the viewpoint of protecting the global environment, please do not release refrigerant into the atmosphere.

a. Connect the projecting side (pin-pushing side) of the charging hose for the manifold gauge to the service port of the 3-way

valve. (1)

b. Fully open the handle Lo of the manifold gauge and run the vacuum pump. (2) (If the needle of the low-pressure gauge

instantly reaches vacuum, re-check step a).)

c. Continue the vacuum process for at least 15 minutes, then check to make sure the low-pressure gauge has reached -0.1

MPa (-76 cmHg). Once the vacuum process has finished, fully close the handle Lo of the manifold gauge and stop the vacuum pump operation, then remove the charging hose that is connected to the vacuum pump adaptor. (Leave the unit in that conditio n for 1-2 minutes, and make sure that the needle of the manifold gauge does not return.) (2) and (3)

d. Turn the valve stem of the 2-way valve 90° counter-clockwise to open it, then, after 10 seconds, close it and inspect for a

gas leak (4)

e. Remove the charging hose from the 3-way valve service port, then open both the 2-way valve and 3-way valve. (1) (4) (Turn

the valve stem in the counter-clockwise direction until it gently makes contact. Do not turn it forcefully).

f. Tighten the service port cap with a torque wrench (18 N.m (1.8 kgf.m)). (5) Then tighten the 2-way valve and 3-way valve

caps with a torque wrench (42 N.m (4.2 kgf.m)) or (55 N.m (5.5 kgf.m)). (6)

g. After attaching each of the caps, inspect for a gas leak around the cap area. (5) (6)

Precautions

Be sure to read the instructions for the vacuum pump,

•

vacuum pump adaptor and manifold gauge prior to use, and follow the instructions carefully.

Make sure that the vacuum pump is filled with oil up to

•

the designated line on the oil gauge.

The gas pressure back flow prevention valve on the

•

charging hose is generally open during use. When you are removing the charging hose from the service port, it will come off more easily if you close this valve.

Fig. 12 Vacuum pump air purging configuration

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10.4.2. Transferring (Using New Refrigerant Piping)

1. Removing the unit

a. Collecting the refrigerant into the outdoor unit by pumping down

The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low.

Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turning them counter-

•

clockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened position. Always use a hex wrench (with 4-mm opposing sides) to operate the valve stems.)

Press the TEST RUN button on the indoor unit, and allow preliminary operation for 5-6 minutes. (TEST RUN mode)

•

After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valve by turning the valve stem in

•

the clockwise direction.

Press the TEST RUN button on the indoor unit again, and after 2-3 minutes of operation, turn the valve stem of the 3-

•

way valve quickly in the clockwise direction to close it, then stop the operation.

Tighten the caps of the 2-way valve and 3-way valve to the stipulated torque.

•

Remove the connection pipes (liquid side and gas side).

•

b. Removing the indoor and outdoor units.

Disconnect the pipes and connecting electric cables from between the indoor and outdoor units.

•

Put capped flare nuts onto all of the pipe connections of the indoor and outdoor units, to make sure no dust or other

•

foreign matter enters.

Remove the indoor and outdoor units.

•

2. Installing the unit Install the unit using new refrigerant piping. Follow the instructions in section 4.1 to evacuate the pipes connecting the indoor and outdoor units, and the pipes of the indoor unit, and check for gas leaks.

10.4.3. AC Units Replacement (Using Existing Refrigerant Piping)

When replacing an R410A AC unit with another R410A AC unit, you should re-flare the refrigerant piping. Even though the replacement AC unit uses the R410A, problems occur when, for example, either the AC unit maker or the refrigerating machine oil is differen t. When replacing an R22 AC unit with an R410A AC unit, the following checks and cleaning procedures are necessary but are difficult to do because of the chemical characteristics of the refrigerating machine oil (as described in items c) and d) of section

About R410A Refrigerant

1. Piping check Because of the different pressure characteristics of R22 and R410A, the design pressure for the equipment is 1.6 times different. the wall thickness of the piping must comply with that shown in Table 10, but this is not easy to check. Also, even if the thickness is correct, there may be flattened or bent portions midway through the piping due to sharp curves. Buried sections of the piping also cannot be checked.

2. Pipe cleaning A large quantity of refrigerating machine oil (mineral oil) adheres to existing pipes due to the refrigeration cycle circulation. If the pipes are used just as they are for the R410A cycle, the capacity will be lowered due to the incompatibility of this oil with the R410A, or irregularities may occur in the refrigeration cycle. For this reason, the piping must be thoroughly cleaned, but this is difficult with the present technology.

). In this case, you should use new refrigerant piping rather than the existing piping.

10.4.4. Refrigerant Compatibility (Using R410A Refrigerant in R22 ACs and Vice Versa)

Do not operate an existing R22 AC with the new R410A refrigerant. Doing so would result in improper functioning of the equipment or malfunction, and might lead to a major accident such as an explosion in the refrigeration cycle. Similarly, do not operate an R410A AC with R22 refrigerant. The chemical reaction between the refrigerating machine oil used in R410A ACs and the chlorine that is contained in R22 would cause the refrigerating machine oil to degrade and lead to malfunction.

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10.4.5. Recharging Refrigerant During Servicing

When recharging is necessary, insert the specifie d amount of new refrigerant in accordance with the following procedure.

1. Connect the charging hose to the service port of the outdoor unit.

2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve.

3. Fully open the handle Lo of the manifold gauge, turn on the power of the vacuum pump and continue the vacuum process for at least one hour.

4. Confirm that the low pressure gauge shows a reading of -0.1 Mpa (-76 cmHg), then fully close the handle Lo, and turn off the vacuum pump. Wait for 1-2 minutes, then check to make sure that the needle of the Low pressure gauge has not returned. See Fig. 13 for the remaining steps of this procedure.

5. Set the refrigerant cylinder onto the electronic scale, then connect the hose the cylinder and to the connection port for the electronic scale. (1)(2)

Precaution:

Be sure to set up the cylinde r for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid without having to turn the cylinder around

6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the connection port of the electronic scale. (2)(3)

7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, press the check valve of the manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.)

8. After adjusting the electronic scale to zero, open the charging valve, then open the valve Lo of the manifold gauge and charge with the liquid refrigerant. (2)(5) (Be sure to read the operating instructions for the electronic scale.)

9. If you cannot charge the stipulated amount, operate the unit in the cooling mode while charging a little of the liquid at a time (about 150 g/time as a guideline). If the charging amount is insufficient from one operation, wait about one minute, then use the same procedure to do the liquid charging again.

Precaution:

Never use the gas side to allow a larger amount of liquid refrigerant to be charged while operating the unit.

10. Close the charging valve, and after charging the liquid refrigerant inside the charging hose, fully close the valve Lo of the manifold gauge, and stop the operation of the unit. (2)(5)

11. Quickly remove the charging hose from the service port. (6) If you stop midway through, the refrigerant that is in the cycle will be discharged.

12. After putting on the caps for the service port and operating valve, inspect around the caps for a gas leak. (6)(7)

Fig. 13 Re-charging refrigerant

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

10.4.6. Brazing

As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N

1. Attach a reducing valve to the nitrogen gas cylinder.

2. Apply a seal onto the clearance between the piping and inserted pipe for the nitrogen gas in order to prevent the nitrogen gas from flowing backward.

3. When the nitrogen gas is flowing, be sure to keep the piping end open.

4. Adjust the flow rate of nitrogen gas so that it is lower than 0.05 m

5. After taking the steps above, keep the nitrogen gas flowing until the piping cools down to a certain extent (i.e. temperature at which pipes are touchable with finger).

6. Completely remove the flux after brazing.

) flow.

/h, or 0.02 MPa (0.2 kgf/cm2) by means of the reducing valve.

Fig. 14 Prevention of Oxidation during Brazing

Cautions during brazing

1. General Cautions

a. The brazing strength should be high as required.

b. After operation, airtightness should be kept under pressurized condition.

c. During brazing do not allow component materials to become damaged due to overheating.

d. The refrigerant pipe work should not become blocked with scale or flux.

e. The brazed part should not restrict the flow in the refrigerant circuit.

f. No corrosion should occur from the brazed part.

2. Prevention of Overheating

Due to heating, the interior and exterior surfaces of treated metal may oxidize. Especially, when the interior of the refrigerant circuit oxidizes due to overheating, scale occurs and stays in the circuit as dust, thus exerting a fatally adverse effect. So, make brazing at adequate brazing temperature and with minimum of heating area.

3. Overheating Protection

In order to prevent components near the brazed part from overheating damage or quality deterioration due to flame or heat, take adequate steps for protection such as (1) by shielding with a metal plate, (2) by using a wet cloth, and (3) by means of heat absorbent.

4. Movement during Brazing

Eliminate all vibration during brazing to protect brazed joints from cracking and breakage.

5. Oxidation Preventative

In order to improve the brazing efficiency, various types of antioxidant are available on the market. However, the constituents of these are widely varied, and some are anticipated to corrode the piping materials, or adversely affect HFC refrigerant, lubricating oil, etc. Exercise care when using an oxidation preventive.

10.4.7. Servicing Tips

The drier must also be replaced whenever replacing the refrigerant cycle parts. Replacing the refrigerant cycle parts first before replacing the drier. The drier is supplied in a vacuum pack. Perform brazing immediately after opening the vacuum pack, and then start the vacuum within two hours. In addition, the drier also needs to be replaced when the refrigerant has leaked completely. (Applicable for drier models only)

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

11 Installation Instructions

CS-E15DKDW

●

Required tools for Installation Works

1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter

2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench

3. Electric drill, hole core drill (ø70 mm)

4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold

7. Reamer 11. Thermometer 15. Vacuum pump

11.1. Safety Precautions

•

Read the following “SAFETY PRECAUTIONS” carefully before installation.

•

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.

•

The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

WARNING

CAUTION

This indication shows the possibility of causing death or serious injury. This indication shows the possibility of causing injury or damage to properties only.

18 N.m (1.8 kgf.m) 42 N.m (4.2 kgf.m) 55 N.m (5.5 kgf.m)

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

•

Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

WARNING

1. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.

2. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

3. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

4. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

5. For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

6. Use the specified cable (1.5 mm2) and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

7. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up at connection point of terminal, fire or electrical shock.

8. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle. Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and injury.

9. When connecting the piping, do not allow air or any substances other than the specified refrigerant (R410A) to enter the refrigeration cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in explosion and injury.

10.

•

When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.

•

Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

•

It is desirable that the amount of residual oil is less than 40 mg/10 m.

11. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical appliances. Otherwise, it will cause fire or electrical shock.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

CAUTION

1. This equipment must be earthed. It may cause electrical shock if grounding is not perfect.

2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.

3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

ATTENTION

1. Selection of the installation location. Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

2. Power supply connection to the room air conditioner. Connect the power supply cord of the room air conditioner to the mains using one of the following method. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

1. Power supply connection to the receptacle using a power plug.

Use an approved 15/16A (E15DK) power plug with earth pin for connection to the socket.

2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A circuit breaker for the permanent

connection. It must be a double pole switch with a minimum 3.5 mm contact gap.

3. Do not release refrigerant. Do not release refrigerant during piping work for installation, reinstallation and during repairing a refrigeration parts. Take care of the liquid refrigerant, it may cause frostbite.

4. Installation work. It may need two people to carry out the installation work.

5. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Attached accessories

Applicable piping kit

CZ-4F5, 7, 10BP (E15DK)

Select the best location

INDOOR UNIT

There should not be any heat source or steam near

•

the unit.

There should not be any obstacles blocking the air

•

circulation.

A place where air circulation in the room is good.

•

A place where drainage can be easily done.

•

A place where noise prevention is taken into

•

consideration.

Do not install the unit near the door way.

•

Ensure the spaces indicated by arrows from the wall,

•

ceiling, fence or other obstacles.

Recommended installation height for indoor unit

•

shall be at least 2.5 m.

Indoor/Outdoor Unit Installation Diagram

OUTDOOR UNIT

If an awning is built over the unit to prevent direct

•

sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

There should not be any animal or plant which could

•

be affected by hot air discharged.

Keep the spaces indicated by arrows from wall,

•

ceiling, fence or other obstacles.

Do not place any obstacles which may cause a short

•

circuit of the discharged air.

If piping length is over 7.5 m, additional refrigerant

•

should be added as shown in the table.

This illustration is for explanation purposes only.

•

The indoor unit will actually face a different way.

11.2. Indoor Unit

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

11.2.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

11.2.2. HOW TO FIX INSTALLATION PLATE

The mounting wall is strong and solid enough to prevent it from the vibration.

11.2.3. TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

3. Cut the sleeve until it extrudes about 15 mm from the wall.

Caution

When the wall is hollow, please be sure to use the sleeve for tube ass’y to prevent dangers caused by mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

The centre of installation plate should be at more than 450 mm at right and left of the wall.

The distance from installation plate edge to ceiling should more than 67 mm.

From installation plate left edge to unit’s left side is 74 mm.

From installation plate right edge to unit’s right is 94 mm.

For left side piping, piping connection for liquid should be about 15 mm from this line.

For left side piping, piping connection for gas should be about 45 mm from this line.

For left side piping, piping connecting cable should be about 800 mm from this line.

1. Mount the installation plate on the wall with 5 screws or more. (If mounting the unit on the concrete wall consider using anchor bolts.)

Always mount the installation plate horizontally by

•

aligning the marking-off line with the thread and using a level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

Line according to the arrows marked on the lower left

•

and right side of the installation plate. The meeting point of the extended line is the centre of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole centre is obtained by measuring the distance namely 150 mm and 125 mm for left and right hole respectively.

Drill the piping hole at either the right or the left and the

•

hole should be slightly slanted to the outdoor side.

11.2.4. INDOOR UNIT INSTALLATION

For the right rear piping

For the right and right bottom piping

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

For the embedded piping

(This can be used for left rear piping & left bottom piping also.)

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

11.2.5. CONNECT THE CABLE TO THE INDOOR UNIT

1. The inside and outside connecting cable can be connected

without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed 4 × 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.

Ensure the color of wires of outdoor unit and the

•

terminal Nos. are the same to the indoor’s respectively.

Earth lead wire shall be longer than the other lead wires

•

as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage.

Secure the cable onto the control board with the holder

•

(clamper).

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

INSTALLATION OF SUPER ALLERU-BUSTER FILTER

1. Open the front panel.

2. Remove the air filter.

3. Remove Supersonic air purifying device.

4. Open the Supersonic air purifyin g device frame.

5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as show in illustration at right.

HOW TO TAKE OUT FRONT GRILLE

Please follow the steps below to take out front grille if necessary such as when servicing.

1. Open the intake grille.

2. Set the vertical airflow direction louvers to the horizontal position.

3. Slide down the 2 caps on the front grille as shown in the illustration below, and then remove the 2 mounting screws.

4. Pull the lower section of the front grille towards you to remove the front grille.

When reinstalling the front grille, first set the vertical airflow direction louver to the horizontal position and then carry out above steps 2 - 3 in the reverse order.

AUTO SWITCH OPERATION

The below operations will be performed by pressing the “AUTO” switch.

1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto Switch is pressed.

2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. A “beep” sound will occur at the fifth sec., in order to identify the starting of Test Run operation

3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF

The ON/OFF of remote controller receiving sound can be change over by pressing the following step:

a. Release the Auto Switch after Test Run operation is activated.

b. Then, within 20 sec., after a., press Auto Switch for more than 5 sec.

A “beep”“beep” sound will occur at the fifth sec., then release the Auto Switch.

c. Within 20 sec. after b., press Auto Switch again. Everytime Auto Switch is pressed (within 20 sec. interval), remote

controller receiving sound status will be reversed between ON and OFF.

Long “beep” sound indicates that remote controller receiving sound is OFF.

Short “beep” sound indicates that remote controller receiving sound is ON.

11.3. Outdoor Unit

11.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

11.3.2. INSTALL THE OUTDOOR UNIT

After selecting the best location, start installation according

•

to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and horizontally

by bolt nut. (ø10 mm).

2. When installing at roof, please consider strong wind and

earthquake. Please fasten the installation stand firmly with bolt or nails.

11.3.3. CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. (In case of using long piping)

Connect the piping

Align the center of piping and sufficie ntly tighten the flare

•

nut with fingers.

Further tighten the flare nut with torque wrench in specified

•

torque as stated in the table.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

MODEL Piping size (Torque)

Gas Liquid

E15DK 1/2” (55 N.m) 1/4” (18 N.m)

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (located at valve) onto the copper pipe.

Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.

CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.

2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.

Turn the piping end down to avoid the metal powder entering the pipe.

3. Please make flare after inserting the flare nut onto the copper pipes.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

11.3.4. EVACUATION OF THE EQUIPMENT

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve.

Be sure to connect the end of the charging hose with the push pin to the service port.

•

2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.

3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to

-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKA GE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at torque of 18 N.m with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

Be sure to check for gas leakage.

•

CAUTION

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:

•

If the leak stops when the piping connections are tightened further, continue working from step 3.

•

If the leak does not stop when the connections are retightened, repair the location of leak.

•

Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause

•

frostbite.

11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT

(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)

1. Remove the control board cover from the unit by loosening the screw.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm type designation 245 IEC 57 or heavier cord.

flexible cord,

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

3. Secure the cable onto the control board with the holder (clamper).

4. Cable connection to the power supply (220 - 240V, 50Hz) through knife switch (Disconnecting means).

Connect the approved polychloroprene sheathed power supply cable (3 x 1.5 mm

•

), type designation 245 IEC 57 or heavier

cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means).

Note: Knife switch (Disconnecting means) should have minimum 3 mm contact gap.

Secure the cable onto the control board with the holder (clamper).

•

Power supply earth cable must connect to the left earth terminal.

•

11.3.6. PIPE INSULATION

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

If a drain elbow is used, the unit should be placed on a

•

stand which is taller than 3 cm.

If the unit is used in an area where temperature falls below

•

0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

CHECK THE DRAINAGE

Open front panel and remove air filters.

•

(Drainage checking can be carried out without removing the front grille.)

Pour a glass of water into the drain tray-styrofoam.

•

Ensure that water flows out from drain hose of the indoor

•

unit.

EVALUATION OF THE PERFORMANCE

Operate the unit at cooling operation mode for fifteen

•

minutes or more.

Measure the temperature of the intake and discharge air.

•

Ensure the difference between the intake temperature and

•

the discharge is more than 8°C.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

CHECK ITEMS

Is there any gas leakage at flare nut connections?

Has the heat insulation been carried out at flare nut connection?

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

Is the drainage OK? (Refer to “Check the drainage” section)

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the installation plate?

Is the power supply voltage complied with rated value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the super alleru-buster filter is installed?

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

12 Installation Instructions

CS-E18DKDW CS-E21DKDS

●

Required tools for Installation Works

1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter

2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench

3. Electric drill, hole core drill

(ø70 mm)

4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold

7. Reamer 11. Thermometer 15. Vacuum pump

12.1. Safety Precautions

•

Read the following “SAFETY PRECAUTIONS” carefully before installation.

•

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.

•

WARNING

CAUTION

This indication shows the possibility of causing death or serious injury. This indication shows the possibility of causing injury or damage to properties only.

18 N.m (1.8 kgf.m) 42 N.m (4.2 kgf.m) 55 N.m (5.5 kgf.m)

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

•

WARNING

1. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.

2. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

3. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

4. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

10.

•

Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

•

It is desirable that the amount of residual oil is less than 40 mg/10 m.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

CAUTION

1. This equipment must be earthed. It may cause electrical shock if grounding is not perfect.

2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.

3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

ATTENTION

1. Selection of the installation location. Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

1. Power supply connection to the receptacle using a power plug.

Use an approved 16A (E18DK, E21DK) power plug with earth pin for connection to the socket.

2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A circuit breaker for the permanent

connection. It must be a double pole switch with a minimum 3.5 mm contact gap.

4. Installation work. It may need two people to carry out the installation work.

5. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

Attached accessories

Applicable piping kit

CZ-4F5, 7, 10BP (E18DK, E21DK)

Select the best location

INDOOR UNIT

There should not be any heat source or steam near

•

the unit.

There should not be any obstacles blocking the air

•

circulation.

A place where air circulation in the room is good.

•

A place where drainage can be easily done.

•

A place where noise prevention is taken into

•

consideration.

Do not install the unit near the door way.

•

Ensure the spaces indicated by arrows from the wall,

•

ceiling, fence or other obstacles.

Recommended installation height for indoor unit

•

shall be at least 2.5 m.

Indoor/Outdoor Unit Installation Diagram

OUTDOOR UNIT

If an awning is built over the unit to prevent direct

•

sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

There should not be any animal or plant which could

•

be affected by hot air discharged.

Keep the spaces indicated by arrows from wall,

•

ceiling, fence or other obstacles.

Do not place any obstacles which may cause a short

•

circuit of the discharged air.

If piping length is over 10 m, additional refrigerant

•

should be added as shown in the table.

This illustration is for explanation purposes only.

•

The indoor unit will actually face a different way.

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

12.2. Indoor Unit

12.2.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

12.2.2. HOW TO FIX INSTALLATION PLATE

The mounting wall is strong and solid enough to prevent it from the vibration.

12.2.3. TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

3. Cut the sleeve until it extrudes about 15 mm from the wall.

Caution

When the wall is hollow, please be sure to use the sleeve for tube ass’y to prevent dangers caused by mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

The centre of installation plate should be at more than 550 mm at right and left of the wall.

The distance from installation plate edge to ceiling should more than 67 mm.

From installation plate left edge to unit’s left side is 47 mm.

From installation plate right edge to unit’s right is 73 mm.

For left side piping, piping connection for liquid should be about 126 mm from this line.

For left side piping, piping connection for gas should be about 174 mm from this line.

For left side piping, piping connecting cable should be about 984 mm from this line.

1. Mount the installation plate on the wall with 5 screws or more. (If mounting the unit on the concrete wall consider using anchor bolts.)

Always mount the installation plate horizontally by

•

aligning the marking-off line with the thread and using a level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

Line according to the arrows marked on the lower left

•

Drill the piping hole at either the right or the left and the

•

hole should be slightly slanted to the outdoor side.

12.2.4. INDOOR UNIT INSTALLATION

For the right rear piping

For the right and right bottom piping

For the embedded piping

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

(This can be used for left rear piping & left bottom piping also.)

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

12.2.5. CONNECT THE CABLE TO THE INDOOR UNIT

1. The inside and outside connecting cable can be connected

without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed 4 × 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.

Ensure the color of wires of outdoor unit and the

•

terminal Nos. are the same to the indoor’s respectively.

Earth lead wire shall be longer than the other lead wires

•

as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage.

Secure the cable onto the control board with the holder

•

(clamper).

CS-E15DKDW CU-E15DKD / CS-E1 8DKDW CU-E1 8DKD / CS-E2 1DKDS CU- E21DKD

INSTALLATION OF SUPER ALLERU-BUSTER FILTER

1. Open the front panel.

2. Remove the air filter.

3. Remove Supersonic air purifying device.

4. Open the Supersonic air purifyin g device frame.

5. Insert the super alleru-buster filter and close the Supersonic air purifying device frame as show in illustration at right.

HOW TO TAKE OUT FRONT GRILLE

Please follow the steps below to take out front grille if necessary such as when servicing.

1. Open the intake grille.

2. Set the vertical airflow direction louvers to the horizontal position.

3. Slide down the 3 caps on the front grille as shown in the illustration below, and then remove the 3 mounting screws.