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Order No. MAC0502032C8
Air Conditioner
CS-E15DB4EW CU-E15DBE
CS-E18DB4EW CU-E18DBE
CS-E21DB4ES CU-E21DBE
CONTENTS
Page Page
1 Features 2 4.2. OutdoorUnit 13
2 Functions 3 5 RefrigerationCycleDiagram 14
2.1. RemoteControl 3 6 BlockDiagram 15
2.2. IndoorUnit 4 7 WiringDiagram 16
2.3. OutdoorUnit 5 8 OperationDetails 17
3 ProductSpecifications 6 8.1. BasicOperation 17
6 8.2. ProtectionControlFeatures 28
3.1. CS-E15DB4EWCU-E15DBE
3.2. CS-E18DB4EWCU-E18DBE 8 9 OperatingInstructions 34
3.3.
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 10.3. Refrigerant Piping Work 47 14.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 79 10.4. Installation, Transferring, Servicing 49 14.2. CZ-BT20E (Front Grille Complete) 81 11 Installation Instructions 53 15 Replacement Parts List (Indoor Unit) 82 11.1. Safety Precautions 53 15.1. CS-E15DB4EW CS-E18DB4EW CS-E21DB4ES 82 15.2. CZ-BT20E (Front Grille Complete) 83 11.2. Indoor Unit 55 11.3. Outdoor Unit 62 16 Exploded View (Outdo
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2 Functions 2.1. RemoteControl FAN AUTO SPEED HEAT COOL DRY OFF OFF ON TIMER TIMER OFF/ON MODE FAN SPEED POWERFUL AUTO TEMP AIR SWING QUIET MANUAL TIMER ON SET 123 OFF CANCEL CANCEL CHECK CLOCK RESET INVENTER TEMP OFF / ON I Operation OFF / ON Room Temperature Setting • Increase or decrease set temperature. (16°C to 30°C) MODE Operation Mode Selection • AUTO Automatic Operation TIMER-ON TIMER-OFF • HEAT Heating Operation Timer
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2.2. IndoorUnit Automatic Operation Switch Quiet Mode • To run automatic operation, force cooling or • To provide quiet operation. heating operation, or change remote control signal type. 24-Hour Real Time Timer Control Operation Indication Lamps (LED) Automatic Restart Control • POWER (Green) ........ Lights up in operation, • Operation is restarted after power failure at blinks in Automatic previous setting mode. Operation M
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 2.3. OutdoorUnit 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 Outdoor Air Temperature Control Standby Control Deice Operation 5
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3 ProductSpecifications 3.1. CS-E15DB4EWCU-E15DBE Unit CS-E15DB4EW CU-E15DBE Cooling Capacity kW 4.10 (0.90 - 4.80) kcal/h 3,530 (770 - 4,130) BTU/h 14,000 (3,070 - 16,400) Heating Capacity kW 5.10 (0.90 - 6.20) kcal/h 4,390 (770 - 5,330) BTU/h 17,400 (3,070 - 21,100) Moisture Removal l/h 2.3 Pint/h (4.9) Power Source (Phase, Voltage, Cycle) ø Single V 230 - 240 Hz 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE 3 Air Volum
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E15DB4EW CU-E15DBE Pipe Size inch G (gas side) ; 1/2” G (gas side) ; 1/2” (Flare piping) inch L (liquid side) ; 1/4” L (liquid side) ; 1/4” Drain Inner diameter mm 30 — Hose Length m 0.193 — Power Cord Length —— — Number of core-wire — Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750) Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875) Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345) Net Weight lb (kg) 40 (18) 106
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3.2. CS-E18DB4EWCU-E18DBE Unit CS-E18DB4EW CU-E18DBE Cooling Capacity kW 4.80 (0.90 - 5.70) kcal/h 4,130 (770 - 4,900) BTU/h 16,400 (3,070 - 19,400) Heating Capacity kW 5.60 (0.90 - 7.10) kcal/h 4,820 (770 - 6,110) BTU/h 19,100 (3,070 - 24,200) Moisture Removal l/h 2.6 Pint/h (5.5) Power Source (Phase, Voltage, Cycle) ø Single V 230 - 240 Hz 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE 3 Air Volume Lo m /min (cfm) Coolin
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E18DB4EW CU-E18DBE Drain Inner diameter mm 30 — Hose Length m 0.193 — Power Cord Length —— — Number of core-wire — Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750) Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875) Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345) Net Weight lb (kg) 40 (18) 106 (48) Compressor Type — Involute scroll Motor Type — Brushless (4-pole) Rated Output W — 900 Air Circulation Type Backward
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 3.3. CS-E21DB4ESCU-E21DBE Unit CS-E21DB4ES CU-E21DBE Cooling Capacity kW 5.90 (0.90 - 6.30) kcal/h 5,070 (770 - 5,420) BTU/h 20,100 (3,070 - 21,500) Heating Capacity kW 7.00 (0.90 - 8.00) kcal/h 6,020 (770 - 6,880) BTU/h 23,900 (3,070 - 27,300) Moisture Removal l/h 3.3 Pint/h (7.0) Power Source (Phase, Voltage, Cycle) ø Single V 230 - 240 Hz 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE 3 Air Volume Lo m /min (cfm) Coolin
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE Unit CS-E21DB4ES CU-E21DBE Drain Inner diameter mm 30 — Hose Length m 0.193 — Power Cord Length —— — Number of core-wire — Dimensions Height inch (mm) 10 - 1/4 (260) 29 - 17/32 (750) Width inch (mm) 22 - 5/8 (575) 34 - 7/16 (875) Depth inch (mm) 22 - 5/8 (575) 13 - 19/32 (345) Net Weight lb (kg) 40 (18) 108 (49) Compressor Type — Involute scroll Motor Type — Brushless (4-pole) Rated Output W — 900 Air Circulation Type Backward
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 4 Dimensions 4.1. IndoorUnit&RemoteControl 4.1.1. CS-E15DB4EWCS-E18DB4EWCS-E21DB4ES 12
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 4.2. OutdoorUnit 4.2.1. CU-E15DBECU-E18DBECU-E21DBE 13
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 5 RefrigerationCycleDiagram 14
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 6 BlockDiagram 15
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 7 WiringDiagram 16
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8 OperationDetails 8.1. BasicOperation Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjust output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintains the set temperature by measuring the temperature of environment and performing temperature shifting. 8.1.1. TemperatureShiftingFlow Th
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.2. CoolingOperation 8.1.2.1. Thermostatcontrol • 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. 8.1.3. SoftDryOperation 8.1.3.1. Thermostatcontrol • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.0°C. • Compressor
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.5. 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. Values
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CS-E15DB4EW CU-E15DBE / CS-E18DB4EW CU-E18DBE / CS-E21DB4ES CU-E21DBE 8.1.6. IndoorFanMotorOperation 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) PSHI SHI Hi Me+ Me Me- Lo Lo- SLo SSLo E15D 600 560 560 495 480 425 400 370 310 200 E18D 680 640 590 563 510 488 430 410 350 200 E21D 800 750 700 660 600 560 510 480 410 200 [Heating] Remote Control — — O O
