Technibel MCAV180/220C5VAA, GRV180L7TAA, GRV220C7TAA, GRV180C7TAA, KPAV180/220C5TAA Technical Data & Service Manual

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TECHNICAL DATA & SERVICE MANUAL

Indoor Unit Outdoor Unit

MCAV180/220C5VAA GRV180C7TAA

KPAV180/220C5TAA GRV180L7TAA

SPLIT SYSTEM AIR CONDITIONER

GRV180L7TAA

GRV220C7TAA

KPAV180/220C5TAA

MCAV180/220C5VAA

0.8180.147.1 04/2002

GRV220C7TAA GRV220L7TAA

GRV180C7TAA

GRV220L7TAA

Important! Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

For safe installation and trouble-free operation, you must:

●Carefully read this instruction booklet before beginning.

●Follow each installation or repair step exactly as shown.

●Observe all local, state, and national electrical codes.

●Pay close attention to all warning and caution notices

given in this manual.

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

Special Precautions

When Wiring

ELECTRICAL SHOCK CAN CAUSE

SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

WARNING

CAUTION

WARNING

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing…

…In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the units weight. It may be necessary to construct a strong wood or metal frame to provide added support.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leakfree connection.

• Check carefully for leaks before starting the test run.

When Servicing

• Turn the power off at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

Others

• Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.

• Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact with a stove, gas water heater, electric room heater or other heat source, it can produce dangerously toxic gas.

CAUTION

Table of Contents

Page

1 OPERATING RANGE 1 2 SPECIFICATIONS

2-1 Unit Specification 2 2-2 Major Components Specifications 10

2-3 Other Component Specifications 16 3 DIMENSIONAL DATA 22 4 REFRIGERANT FLOW DIAGRAM 26 5 PERFORMANCE DATA

5-1 Air Throw Distance Chart 28

5-2 Cooling Capacity 31 6 ELECTRICAL DATA

6-1 Electrical Characteristic 37

6-2 Electric Wiring Diagrams 41 7 INSTALLATION INSTRUCTION

7-1 Installation Site Selection 45 7-2 Remote Control Unit Installation P osition 47 7-3 Recommended Wire Leng th and Diameter 48

8 FUNCTION

8-1 Room Temperature Control 49

8-2 Dry Operation 50

8-3 Freeze Prevention 50

8-4 Low Ambient Fan Speed Control 51 9 REFRIGERANT R407C:SPECIAL PRECAUTION WHEN SERVICING UNIT

9-1 Characteristics of new refrigerant R407c 53 9-2 Checklist before servicing 53 9-3 Tools specifically for R407c 54 9-4 For tubing installation procedures 54 9-5 In case of compressor malfunction 55 9-6 In case refrigerant is leaking 57 9-7 Charging additional refrigerant 59 9-8 Retro-fitting existing systems 59

10 TROUBLESHOOTING

10-1 Check before and after troubleshooting 60

10-2 Air Conditioner Does not operate 61

10-3 Some Parts of Air Conditioner does not operate 66

10-4 Air Conditioner operates, but abnormalities are observed 69

10-5 If a Sensor is defective 70 11 CHECKING ELECTRICAL COMPONENTS

11-1 Measure of insulation Resistance 71

11-2 Check Continuity of fuse on PCB Ass’y 72

11-3 Checking Motor Capacitor 72 12 DISASSEMBLY PROCEDURE FOR INDOOR UNIT

12-1 Removing air intake grille 73 12-2 Removing side panels 74 12-3 Access and removal of electrical component box 74 12-4 Removing flap motor 75 12-5 Removing evaporator 75 12-6 Removing fan and fan motor 77

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Maximum 32°C D.B. / 23°C W.B.

43°C D.B.

Minimum 19°C D.B. / 14°C W.B.

19°C D.B.(*)

(*) L Models : -15°C D.B.

2. SPECIFICATIONS

2-1. Unit Specifications

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 V 50 Hz

Cooling

Capacity

kW 5.1

BTU/h 17400

Air circulation (High) m

/h 760 Moisture removal (High) Liters/h 2.3 Available voltage range V 342 to 418 Running amperes A 3.7 Power input W 2100 Power factor % 82 C.O.P. W/W 2.4 Compressor locked rotor amperes A 21.5 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi,LO)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c/ 1840 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 55 / 51 / 49

Outdoor – Hi dB-A 64 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 12.7 (1/2)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 630

Width mm 995 830

Depth mm 206 305 Package dimensions Height mm 276 713

Width mm 1,070 994

Depth mm 363 413

Weight Net

kg 12.0 52

Shipping

kg 15.0 57

Shipping volume m

0.11 0.29

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV180C5VAA Outdoor Unit GRV180C7TAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Source..... Voltage Rating 400V - 3N - 50Hz........ 400 V

Control Circuit 230 V 50 Hz

Cooling

Capacity

kW 6.15

BTU/h 21000

Air circulation (High) m

/h 830 Moisture removal (High) Liters/h 3.3 Available voltage range V 342 to 418 Running amperes A 4.8 Power input W 2800 Power factor % 84 C.O.P. W/W 2.20 Compressor locked rotor amperes A 28 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 2,450 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 58 / 55 /52

Outdoor – Hi dB-A 67 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 15.88(5/8)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 835

Width mm 995 850

Depth mm 206 305 Package dimensions Height mm 276 913

Width mm 1,070 1000

Depth mm 363 400

Weight Net

kg 12.0 67.0

Shipping

kg 15.0 76.0

Shipping volume m

0.11 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV220C5TAA Outdoor Unit GRV220C7TAA

Refrigerant tube kit/accessories Optional/Hanging wall bracket

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Source.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 V 50 Hz

Cooling

Capacity

kW 5.0

BTU/h 17100

Air circulation (High) m

/h 760 Moisture removal (High) Liters/h 2.3 Available voltage range V 342 to 418 Running amperes A 3.6 Power input W 2000 Power factor % 80 C.O.P. W/W 2.5 Compressor locked rotor amperes A 21.5 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi,LO)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c/ 1710 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 55 / 51 / 49

Outdoor – Hi dB-A 64 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 12.7 (1/2)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 630

Width mm 995 830

Depth mm 206 305 Package dimensions Height mm 276 713

Width mm 1,070 994

Depth mm 363 413

Weight Net

kg 12.0 52

Shipping

kg 15.0 57

Shipping volume m

0.11 0.29

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV180C5VAA Outdoor Unit GRV180L7TAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Source..... Voltage Rating 400V - 3N - 50Hz........ 400 V

Control Circuit 230 V 50 Hz

Cooling

Capacity

kW 6.15

BTU/h 21000

Air circulation (High) m

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 2,410 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 58 / 55 /52

Outdoor – Hi dB-A 67 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 15.88(5/8)

Indoor Unit Outdoor Unit

Unit dimensions Height mm 285 835

Width mm 995 850

Depth mm 206 305 Package dimensions Height mm 276 913

Width mm 1,070 1000

Depth mm 363 400

Weight Net

kg 12.0 67.0

Shipping

kg 15.0 76.0

Shipping volume m

0.11 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit MCAV220C5VAA Outdoor Unit GRV220L7TAA

Refrigerant tube kit/accessories Optional/Hanging wall bracket

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit 230 V 50Hz

Cooling

Capacity

kW 5.0

BTU/h 17100

Air circulation (High) m

/h 800 Moisture removal (High) Liters/h 2.3 Available voltage range V 342 to 418 Running amperes A 3.6 Power input W 2000 Power factor % 80 C.O.P. W/W 2.50 Compressor locked rotor amperes 21.5 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable, Anti-Mold Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 1710 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi dB-A 59

Outdoor – Hi dB-A 64 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4)

diameter

Wide tube mm (in.) 12.7 (1/2)

Refrigerant tube kit Optional

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 630

Width mm 900 830 Depth mm 190 305

Package dimensions Height mm 813 713

Width mm 1011 994 Depth mm 296 413

Weight Net

kg 23.5 52.0

Shipping

kg 30.0 57.0

Shipping volume m

0.24 0.29

Dimensions & Weight Features Electrical Rating Performance

Outdoor Unit GRV180C7TAA

Indoor Unit KPAV180C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 50Hz

Cooling

Capacity

kW 6.15

BTU/h 21000

Air circulation (High) m

/h 900 Moisture removal (High) Liters/h 3.3 Available voltage range V 342 to 418 Running amperes A 4.8 Power input W 2800 Power factor % 84 C.O.P. W/W 2.2 Compressor locked rotor amperes A 28 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable,Anti - mold Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 2,410 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi dB-A 60

Outdoor – Hi dB-A 67 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 15.88 (5/8) Refrigerant tube kit / Accessories Optional / Hanging wall bracket

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 835

Width mm 900 850

Depth mm 190 305 Package dimensions Height mm 813 913

Width mm 1011 1000

Depth mm 296 400

Weight Net

kg 23.5 67.0

Shipping

kg 30.0 76.0

Shipping volume m

0.24 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit KPAV220C5VAA Outdoor Unit GRV220C7TAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Surce.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit 230 V 50Hz

Cooling

Capacity

kW 5.0

BTU/h 17100

Air circulation (High) m

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable, Anti-Mold Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 1710 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 48 / 44 / 49

Outdoor – Hi dB-A 51 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 12.7 (1/2) Refrigerant tube kit Optional

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 630

Width mm 900 830

Depth mm 190 305 Package dimensions Height mm 813 713

Width mm 1011 994

Depth mm 296 413

Weight Net

kg 23.5 52.0

Shipping

kg 30.0 57.0

Shipping volume m

0.24 0.29

Dimensions & Weight Features Electrical Rating Performance

Outdoor Unit GRV180L7TAA

Indoor Unit KPAV180C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Power Source.......Voltage Rating 400V - 3N - 50Hz .. ....400 V

Control Circuit V 230 50Hz

Cooling

Capacity

kW 6.15

BTU/h 21000

Air circulation (High) m

/h 900 Moisture removal (High) Liters/h 3.3 Available voltage range V 342 to 418 Running amperes A 4.8 Power input W 2800 Power factor % 84 C.O.P. W/W 2.20 Compressor locked rotor amperes A 28 Controls / Temperature control Microprocessor / I.C. thermostat Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto Air filter Washable,Anti - mold Compressor Rotary (Hermetic) Refrigerant / Amount charged at shipment g R407c / 2,410 Refrigerant control Capillary tube

Noise Power Level

Indoor – Hi / Me / Lo dB-A 50 / 47 / 44

Outdoor – Hi dB-A 55 Refrigerant tubing connections Flare type Max. allowable tubing length at shipment m 10

Refrigerant tube

Narrow tube mm (in.) 6.35 (1/4) diameter

Wide tube mm (in.) 15.88 (5/8) Refrigerant tube kit / Accessories Optional / Hanging wall bracket

Indoor Unit Outdoor Unit

Unit dimensions Height mm 680 835

Width mm 900 850

Depth mm 190 305 Package dimensions Height mm 813 913

Width mm 1011 1000

Depth mm 296 400

Weight Net

kg 23.5 67.0

Shipping

kg 30.0 76.0

Shipping volume m

0.24 0.37

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit KPAV220C5VAA Outdoor Unit GRV220L7TAA

2-2. Major Component Specifications

2-2-1. Indoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K188E Controls Microprocessor Control circuit fuse 250 V – 3.15 A

Remote Control Unit RCS–8PS3E

Type Cross-flow Q´ty ... Dia. and length mm 1 ... ø88 / L746 Fan motor model ... Q´ty UF2– 31A5PA–S ... 1 No. of poles ... rpm (High) 2 ... 1,305 Nominal output W 30 Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 130.4

WHT – PNK : 169.8

– : – – : – – : –

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ± 8

Close Automatic reclosing

Run capacitor µF 2.0

VAC 440 Type Stepping motor Model MP24GA2 Rating DC 12 V Coil resistance (Ambient temp. 20°C) Ω Each terminals (1–2, 1–3, 1–4, 1–5) 400 : ± 7% Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.3 Face area m2 0.250

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit MCAV180C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K228E Controls Microprocessor Control circuit fuse 250 V – 3.15 A

Remote Control Unit RCS–8PS3E

Type Cross-flow Q´ty ... Dia. and length mm 1 ... ø88 / L746 Fan motor model ... Q´ty UF2– 31A5PA–S ... 1 No. of poles ... rpm (High) 2 ... 1,380 Nominal output W 30 Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 130.4

WHT – PNK : 169.8

– : – – : – – : –

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ± 8

Close Automatic reclosing

Run capacitor µF 2.0

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Circuit

Board

Ass´y

Indoor Unit MCAV220C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K185GS–N Controls Microprocessor Control circuit fuse 250 V – 3 A

Remote Control Unit RCS – 5PN3E

Type Centrifugal Number ... Dia. and length mm 2 ... ø 130 / L 180 Fan motor model ... Number K48410–M01417 ... 1 No. of poles ... rpm (230 V, High) 4 ... 1,140 Nominal output W 27 Coil resistance (Ambient temp. 20°C) Ω GRY – WHT :215 ± 7%

WHT – VLT : 87 ± 7%

VLT – YEL : 87 ± 7%

WHT – PNK : 273 ± 7%

Safety

Type Internal thermal fuse

devices

Operating temp.

Open °C 145 ± 5 Close Automatic reclosing

Run capacitor

µF 2.0

VAC 440 Model M2LJ24ZE31 Rating AC 208 / 230 V, 50 / 60 Hz No. of poles ... rpm 8 ... 2.5 / 3.0 Nominal output W 3 / 2.5 Coil resistance (Ambient temp. 20°C) kΩ 16.45 ± 15%

Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.8 Face area m

0.192

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit KPAV180C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K185GS–N Controls Microprocessor Control circuit fuse 250 V – 3 A

Remote Control Unit RCS – 5PN3E

Type Centrifugal Number ... Dia. and length mm 2 ... ø 130 / L 180 Fan motor model ... Number K48410–M01418 ... 1 No. of poles ... rpm (230 V, High) 4 ... 1,280 Nominal output W 41 Coil resistance (Ambient temp. 20°C) Ω GRY – WHT : 95 ±7%

WHT – VLT : 73 ± 7%

VLT – YEL : 73 ± 7%

WHT – PNK : 207 ± 7%

Safety

Type Internal thermal fuse

devices

Operating temp.

Open °C 145 ± 5 Close Automatic reclosing

Run capacitor

µF 2.0

VAC 440 Model M2LJ24ZE31 Rating AC 208 / 230 V, 50 / 60 Hz No. of poles ... rpm 8 ... 2.5 / 3.0 Nominal output W 3 / 2.5 Coil resistance (Ambient temp. 20°C) kΩ 16.45 ± 15%

Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.8 Face area m

0.192

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Controller

PCB

Indoor Unit KPAV220C5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW-C181BL (Only CLR model)

Control circuit fuse 250V – 5A (Only CLR model) Type Rotary (Hermetic) Compressor model C-2RN173H8W 80807088 Source 380 – 400 V – 3N

50 Hz Nominal output W 1,700 Compressor oil ... Amount cc FV68S ... 800 Coil resistance (Ambient temp. 25°C) Ω C – R : 6.369

C – S : 6.073 R – S : 6.217

Type Internal protector External protector

Safety

Overload relay — HE-10TB TH-5A

devices

Operating temp.

Open °C Automatic opening — Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) — 5A

Run capacitor

µF —

VAC — Crank case heater 240V 30W Type Propeller Q´ty ... Dia. mm 1 ... ø400 Fan motor reference model ... Q'ty SMEN 19 TFB6047 ... 1 Source 220 – 230 V

50 Hz No. of poles ... rpm (220 V, High) 6 ... 910 Nominal output W 43 Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 83.4

WHT – PNK : 218.7

Safety

Type Internal type

devices

Operating temp.

Open °C 130 ± 5 Close Automatic reclosing

Run capacitor

µF 2.0

VAC 440 Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 1.8 Face area m

0.508

External Finish Acrylic baked-on enamel finish

Controller

PCB

Heat

Exch. Coil

Compressor

Fan & Fan Motor

Outdoor Unit GRV180C7TAA / GRV180L7TAA

2-2-2. Outdoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. Johnson Control (Only CLR model)

Type Rotary (Hermetic) Compressor model C-RN223H8A 80244088B Source 380 – 400 V – 3N

50 Hz Nominal output W 2200 Compressor oil ... Amount cc FV68S ... 1350 Coil resistance (Ambient temp. 25°C) Ω C – R : 4.97

C – S : 4.64 R – S : 4.88

Type Internal protector External protector

Safety

Overload relay HE-10TB TH-7A —

devices

Operating temp.

Open °C Automatic opening — Close °C Automatic reclosing —

Operating amp.(Ambient temp. 25°C) 7A —

Run capacitor

µF —

VAC — Crank case heater 240V 30W Type Propeller Q´ty ... Dia. mm 1 ... ø460 Fan motor reference model ... Q´ty SMEN 1STFB6064 ... 1 Source 220 – 230 V

50 Hz No. of poles ... rpm (220 V, High) 6 ... 840 Nominal output W 50 Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 99.5 / WHT - YEL : 252

WHT – PNK : 63.2

Safety

Type Internal type

devices

Operating temp.

Open °C 130 ± 5 Close Automatic reclosing

Run capacitor

µF 5.0

VAC 440 Coil Aluminum plate fin / Copper tube Rows 2 Fin pitch mm 2.0 Face area m

0.610

External Finish Acrylic baked-on enamel finish

Controller

PCB

Heat

Exch. Coil

Compressor

Fan & Fan Motor

Outdoor Unit GRV220C7TAA / GRV220L7TAA

2-3. Other Component Specifications

Thermistor (Room sensor) DTN-TKS142B

Resistance kΩ 25°C 5.0 ± 3%

Thermistor (Coil sensor) DTN-TKS131B

Resistance kΩ 0°C 15.0 ± 2%

Transformer (TR) ATR-J105

Rating Primary AC 230V, 50/60Hz

Secondary 19V, 0.526A Capacity 10VA

Coil resistance Ω (at 21°C) Primary (WHT – WHT): 205 ± 10%

Secondary (BRN – BRN): 2.0 ± 10%

Thermal cut-off temp. 150°C

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

Thermistor (Room sensor TH2) KTEC-35-S6

ResistancekΩ 10°C10.0 ±4%30°C 4.0 ±4%

15°C7.9 ±4%35°C 3.3 ±4% 20°C6.3 ±4%40°C 2.7 ±4% 25°C5.0 ±4%50°C 1.8 ±4%

Thermistor (Coil sensor TH1) PBC-41E-S14

ResistancekΩ –20°C40.1 ±5%20°C 6.5 ±5%

–10°C24.4 ±5%30°C 4.4 ±5%

0°C15.3 ±5%40°C 3.0 ±5%

10°C9.9 ±5%50°C 2.1 ±5%

Transformer (TR) ATR-H85

RatingPrimary AC 230V, 50/60Hz

Secondary 11V, 0.727A Capacity 8VA

Coil resistanceΩ(at 21°C) Primary (WHT – WHT):214 ±10%

Secondary (BRN – BRN):1.58 ±10%

Thermal cut-off temp. 145°C, 2A, 250V

Indoor Unit KPAV180C5VAA

KPAV220C5VAA

Outdoor Unit GRV180C7TAA

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz Contact rating AC 400V, 1A Operation Positive phase: ON

Negative phase: OFF

Electro Magnetic Contactor (MG) HE-10TB TH-5A

Magnetic contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Coil resistance Ω (at 25°C) 1,260 ± 10% Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 5A

Thermostat (Fann speed Control 23S) MQT5S-27YZJ

Switching temp. °C

Contact rating

TH-5A

AC 220V,3A

low →HIGH 27 °C + 0 / - 3

high →LOW23.5°C + 0 / - 2.5

Outdoor Unit GRV180L7TAA

Solid State Relay (SSR) G3L-205TL-TS1

Input

Rated voltage DC 12V Control voltage range DC 0V to 6.4V

Load voltage range AC 75V to 264V, 50Hz

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz Contact rating AC 400V, 1A Operation Positive phase: ON

Negative phase: OFF

Electro Magnetic Contactor (MG) HE-10TB TH-5A

Magnetic contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Coil resistance Ω (at 25°C) 1,260 ± 10% Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 5A

Transformer (TR2) ATR-J105-I

Rating Primary AC 230V, 50Hz

Secondary 19V, 0.526A Capacity 10VA

Coil resistance Ω (at 22°C) Primary (WHT – WHT):205 ±10%

Secondary (BRN – BRN):2.0 ±10%

Thermal cut-off temp. 150°C

Thermistor (Coil sensor TH3 / Air sensor TH4) PBC-41E-S4 / PBC-41E-S8

Resistance kΩ –20°C 40.1 ± 5% 20°C 6.5 ± 5%

–10°C 24.4 ± 5% 30°C 4.4 ± 5%

0°C 15.3 ± 5% 40°C 3.0 ± 5%

10°C 9.9 ± 5% 50°C 2.1 ± 5%

TH-5A

Power Relay HH62S DC24V

Coil rating DC 24V Coil resistance kΩ (at 23°C) 650 ±10% Contact rating AC 250V, 10A

Electro Magnetic Contactor (MG) HE-10TB TH-7A

Magnetic Contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Coil resistance Ω (at 25°C) 1,260 ± 10% Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 7A

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz Contact rating AC 400V, 1A Operation Positive phase: ON

Negative phase: OFF

Thermostat (Fan Speed Control 23S)

YTB-S383

Switching temp. °C

high →LOW28.5°C ±1 low →HIGH31°C ±1

Outdoor Unit GRV220C7TAA

TH-7A

Electro Magnetic Contactor (MG) HE-10TB TH-7A

Magnetic Contactor

Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Coil resistance Ω (at 25°C) 1,260 ± 10% Contact rating (Main) AC 440V, 8A

Thermal relay (Overcurrent relay)

Operating amperes 7A

Negative Phase Relay (47C) RDR-S400

Rating AC 415V, 3-phase 50Hz Contact rating AC 400V, 1A Operation Positive phase: ON

Negative phase: OFF

Thermostat (Fan Speed Control 23S)

YTB-S383

Switching temp. °C

high → LOW 28.5°C ± 1 low →HIGH31°C ±1

Outdoor Unit GRV220L7TAA

Pressure Trasducer

Range Bar 14 to 24

Factory Setting Bar 16 ± 0.5

(Johnson C.) P35 AC

3. DIMENSIONAL DATA

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

28545

995

147.5 147.5

206 (3)

Remote control unit

Center of tubing hole (2 places)

Narrow tube ø6.35 (1/4")

Drain hose ø18

Wide tube ø12.7 (1/2") -------- - -KR188E Wide tube ø15.88 (5/8") KR228E

18.5

172.5

Unit : mm

Indoor Unit KPAV180C5VAA

KPAV220C5VAA

74 74

Center of tubing hole ø75 (4 places)

Wide tube ø12.7 (1/2")

Narrow tube ø6.35 (1/4")

Drain hose ø26

74 74

900

190

680

Wide tube ø15.88 (5/8")

KPAV180C5VAA KPAV220C5VAA

Dimensions : mm

18.5

172.5

Outdoor Unit GRV180C7TAA

Air discharge

Air intake

538 146

307

337

4 – ø12 holes

830

630

305

61 95

Wide tube service valve ø12.7 (1/2")

Narrow tube service valve ø6.35 (1/4")

Unit : mm

GRV180L7TAA

Outdoor Unit GRV220C7TAA

Wide tube service valve ø15.88 (5/8")

Narrow tube service valve ø6.35 (1/4")

Check port ø6.35 (1/4")

86 88

155

7386

229

285

835

620130 100 55

325

850

250250

560

6 – ø3.1 holes

Air intake

Air discharge

Unit : mm

GRV220L7TAA

4. REFRIGERANT FLOW DIAGRAM

Indoor Unit MCAV180C5VAA

KPAV180C5VAA

Outdoor Unit GRV180C7TAA

Compressor

Wide tube service valve

Wide tube

O.D. ø15.88 mm (5/8 ")

Narrow tube service valve

Narrow tube

O.D. ø6.35 mm (1/4")

Evaporator

Capillary for liquid injection

Indoor Unit Outdoor Unit

Muffler

Capillary tube

Condenser

Check port

Accumulator

Strainer

Indoor Unit MCAV220C5VAA

Outdoor Unit GRV220C7TAA

Insulation of Refrigerant Tubing

Because capillary tubing is used in the outdoor unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. The thickness of the insulation should be a min. 8 mm.

After a tube has been insulated, never try to bend it into a narrow curve because it can cause the tube to break or crack.

IMPORTANT

CAUTION

Wide tube

Thickness: Min. 8 mm

Insulation

Narrow tube

Thickness: Min. 8 mm

MCAV220C5VAA

Indoor Unit Outdoor Unit

Indoor Unit MCAV180C5VAA

KPAV180C5VAA

Outdoor Unit GRV180L7TAA

Compressor

Wide tube service valve

Wide tube

O.D. ø15.88 mm (5/8 ")

Narrow tube service valve

Narrow tube

O.D. ø6.35 mm (1/4")

Evaporator

Capillary for liquid injection

Indoor Unit Outdoor Unit

Muffler

Capillary tube

Condenser

Check port

Accumulator

Strainer

Indoor Unit MCAV220C5VAA

Outdoor Unit GRV220L7TAA

Insulation of Refrigerant Tubing

After a tube has been insulated, never try to bend it into a narrow curve because it can cause the tube to break or crack.

IMPORTANT

CAUTION

Wide tube

Thickness: Min. 8 mm

Insulation

Narrow tube

Thickness: Min. 8 mm

KPAV220C5VAA

Indoor Unit Outdoor Unit

Muffler

5-1. Air Throw Distance Chart

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

0 1 2 3 4 5 6 7 8 9

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

0 1 2 3 4 5 6 7 8 9

: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°

Indoor Unit MCAV180C5VAA

Indoor Unit MCAV220C5VAA

5. PERFORMANCE DATA

Indoor Unit KPAV180C5VAA

01234567

Horizontal distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Axis air verocity

Flap angle

60°

45°

Axis air verocity

Flap angle

45°

30°

Floor mounted

Ceiling mounted

AIR FLOW CHART

Indoor Unit KPAV220C5VAA

01234567

Horizontal distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Axis air verocity (m/s)

Vertical distance (m)

Room air temp. : 27°C Fan speed : High

Axis air verocity

Flap angle

60°

45°

Axis air verocity

Flap angle

45°

30°

Floor mounted

Ceiling mounted

5-2. Cooling capacity

INDOOR UNIT: MCAV180C5VAA OUTDOOR UNIT: GRV180C7TAA

400V 50 Hz RATING CAPACITY 5 kW

AIR FLOW RATE 760 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4,83 4,69 4,47 4,19 3,87

CM 1,73 1,84 1,98 2,18 2,37 21 SHC 3,31 3,25 3,14 3,00 2,85 23 SHC 3,76 3,68 3,57 3,44 3,28

15 25 SHC 4,19 4,10 3,99 3,86 3,70

27 SHC 4,63 4,53 4,42 4,19 3,87 29 SHC 4,83 4,69 4,47 4,19 3,87 31 SHC 4,83 4,69 4,47 4,19 3,87

TC 5,23 5,03 4,79 4,50 4,15

CM 1,77 1,90 2,04 2,24 2,43 21 SHC 2,90 2,82 2,71 2,57 2,41 23 SHC 3,33 3,24 3,13 2,99 2,84

17 25 SHC 3,78 3,67 3,56 3,43 3,26

27 SHC 4,21 4,09 3,98 3,85 3,69 29 SHC 4,66 4,52 4,41 4,28 4,11 31 SHC 5,09 4,94 4,79 4,50 4,15

TC 5,54 5,36 5,10 4,79 4,41

CM 1,86 1,96 2,10 2,30 2,50 21 SHC 2,43 2,35 2,24 2,11 1,95 23 SHC 2,85 2,78 2,67 2,54 2,38

19 25 SHC 3,27 3,20 3,09 2,97 2,81

27 SHC 3,69 3,64 3,53 3,39 3,24 29 SHC 4,10 4,06 3,95 3,83 3,66 31 SHC 4,53 4,49 4,38 4,25 4,09

TC 5,88 5,68 5,41 5,08 4,68

CM 1,90 2,01 2,16 2,37 2,57 23 SHC 2,40 2,32 2,21 2,07 1,92

21 25 SHC 2,81 2,74 2,64 2,51 2,35

27 SHC 3,23 3,17 3,06 2,94 2,77 29 SHC 3,64 3,59 3,49 3,36 3,20 31 SHC 4,07 4,02 3,91 3,79 3,64

TC 6,28 6,01 5,68 5,31 4,94

CM 1,93 2,06 2,22 2,42 2,64

23 25 SHC 2,35 2,25 2,13 2,00 1,86

27 SHC 2,75 2,67 2,55 2,42 2,28 29 SHC 3,17 3,10 2,98 2,85 2,72 31 SHC 3,62 3,54 3,40 3,27 3,15

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

Indoor Unit MCAV180C5VAA Outdoor Unit GRV180L7TAA

400V 50 Hz RATING CAPACITY 5 kW AIR FLOW RATE 760 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4.74 4.60 4.38 4.11 3.79

CM 1.65 1.76 1.89 2.07 2.26 21 SHC 3.25 3.18 3.08 2.95 2.79 23 SHC 3.68 3.61 3.50 3.37 3.22

15 25 SHC 4.10 4.02 3.91 3.78 3.63

27 SHC 4.54 4.45 4.34 4.11 3.79 29 SHC 4.74 4.60 4.38 4.11 3.79 31 SHC 4.74 4.60 4.38 4.11 3.79

TC 5.13 4.93 4.70 4.41 4.07

CM 1.68 1.80 1.94 2.13 2.32 21 SHC 2.84 2.76 2.65 2.52 2.36 23 SHC 3.27 3.17 3.07 2.93 2.78

17 25 SHC 3.70 3.60 3.49 3.36 3.20

27 SHC 4.13 4.01 3.90 3.77 3.62 29 SHC 4.56 4.43 4.33 4.20 4.03 31 SHC 4.99 4.85 4.70 4.41 4.07

TC 5.43 5.25 5.00 4.70 4.33

CM 1.77 1.87 2.00 2.20 2.38 21 SHC 2.38 2.30 2.20 2.07 1.91

23 SHC 2.80 2.73 2.62 2.49 2.34

19 25 SHC 3.21 3.14 3.03 2.91 2.75

27 SHC 3.62 3.57 3.46 3.33 3.17 29 SHC 4.02 3.98 3.87 3.75 3.59 31 SHC 4.45 4.40 4.29 4.16 4.01

TC 5.76 5.57 5.30 4.98 4.59

CM 1.80 1.91 2.06 2.26 2.45 23 SHC 2.35 2.27 2.16 2.03 1.88

21 25 SHC 2.75 2.68 2.59 2.46 2.30

27 SHC 3.17 3.11 3.00 2.88 2.72 29 SHC 3.57 3.52 3.42 3.29 3.14 31 SHC 3.99 3.95 3.84 3.72 3.57

TC 6.15 5.89 5.57 5.21 4.85

CM 1.84 1.96 2.11 2.30 2.51

23 25 SHC 2.31 2.21 2.09 1.96 1.83

27 SHC 2.70 2.62 2.50 2.37 2.24 29 SHC 3.11 3.04 2.92 2.79 2.66 31 SHC 3.55 3.47 3.34 3.21 3.09

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

INDOOR UNIT: MCAV220C5VAA OUTDOOR UNIT: GRV220C7TAA / GRV220L7TAA

400V 50 Hz RATING CAPACITY 6,15 kW

AIR FLOW RATE 830 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 5,83 5,66 5,39 5,05 4,67

CM 2,30 2,46 2,65 2,90 3,16 21 SHC 4,00 3,92 3,78 3,62 3,44 23 SHC 4,53 4,44 4,31 4,14 3,96

15 25 SHC 5,05 4,95 4,81 4,65 4,47

27 SHC 5,58 5,47 5,33 5,05 4,67 29 SHC 5,83 5,66 5,39 5,05 4,67 31 SHC 5,83 5,66 5,39 5,05 4,67

TC 6,31 6,07 5,78 5,43 5,00

CM 2,36 2,53 2,71 2,99 3,24 21 SHC 3,50 3,40 3,26 3,10 2,90 23 SHC 4,02 3,90 3,77 3,61 3,42

17 25 SHC 4,55 4,43 4,29 4,13 3,93

27 SHC 5,08 4,93 4,80 4,64 4,45 29 SHC 5,61 5,45 5,32 5,16 4,96 31 SHC 6,14 5,96 5,78 5,43 5,00

TC 6,68 6,46 6,15 5,78 5,32

CM 2,48 2,61 2,80 3,07 3,33 21 SHC 2,93 2,83 2,70 2,54 2,35 23 SHC 3,44 3,36 3,22 3,06 2,87

19 25 SHC 3,94 3,86 3,73 3,58 3,38

27 SHC 4,45 4,39 4,25 4,09 3,90 29 SHC 4,95 4,89 4,76 4,61 4,41 31 SHC 5,47 5,41 5,28 5,12 4,93

TC 7,09 6,85 6,52 6,12 5,64

CM 2,53 2,68 2,89 3,16 3,43 23 SHC 2,89 2,79 2,66 2,50 2,31

21 25 SHC 3,39 3,30 3,18 3,02 2,83

27 SHC 3,90 3,82 3,69 3,54 3,34 29 SHC 4,39 4,33 4,21 4,05 3,86 31 SHC 4,91 4,85 4,72 4,57 4,39

TC 7,57 7,25 6,85 6,40 5,96

CM 2,58 2,75 2,95 3,23 3,52

23 25 SHC 2,84 2,71 2,57 2,41 2,25

27 SHC 3,32 3,22 3,08 2,91 2,75 29 SHC 3,82 3,74 3,60 3,44 3,28 31 SHC 4,37 4,26 4,10 3,94 3,80

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

INDOOR UNIT: KPAV180C5VAA OUTDOOR UNIT: GRV180C7TAA

400V 50 Hz RATING CAPACITY 5.1 kW

AIR FLOW RATE 800 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4,83 4,69 4,47 4,19 3,87

CM 1,73 1,84 1,98 2,18 2,37 21 SHC 3,31 3,25 3,14 3,00 2,85 23 SHC 3,76 3,68 3,57 3,44 3,28

15 25 SHC 4,19 4,10 3,99 3,86 3,70

27 SHC 4,63 4,53 4,42 4,19 3,87 29 SHC 4,83 4,69 4,47 4,19 3,87 31 SHC 4,83 4,69 4,47 4,19 3,87

TC 5,23 5,03 4,79 4,50 4,15

CM 1,77 1,90 2,04 2,24 2,43 21 SHC 2,90 2,82 2,71 2,57 2,41 23 SHC 3,33 3,24 3,13 2,99 2,84

17 25 SHC 3,78 3,67 3,56 3,43 3,26

27 SHC 4,21 4,09 3,98 3,85 3,69 29 SHC 4,66 4,52 4,41 4,28 4,11 31 SHC 5,09 4,94 4,79 4,50 4,15

TC 5,54 5,36 5,10 4,79 4,41

CM 1,86 1,96 2,10 2,30 2,50 21 SHC 2,43 2,35 2,24 2,11 1,95 23 SHC 2,85 2,78 2,67 2,54 2,38

19 25 SHC 3,27 3,20 3,09 2,97 2,81

27 SHC 3,69 3,64 3,53 3,39 3,24 29 SHC 4,10 4,06 3,95 3,83 3,66 31 SHC 4,53 4,49 4,38 4,25 4,09

TC 5,88 5,68 5,41 5,08 4,68

CM 1,90 2,01 2,16 2,37 2,57 23 SHC 2,40 2,32 2,21 2,07 1,92

21 25 SHC 2,81 2,74 2,64 2,51 2,35

27 SHC 3,23 3,17 3,06 2,94 2,77 29 SHC 3,64 3,59 3,49 3,36 3,20 31 SHC 4,07 4,02 3,91 3,79 3,64

TC 6,28 6,01 5,68 5,31 4,94

CM 1,93 2,06 2,22 2,42 2,64

23 25 SHC 2,35 2,25 2,13 2,00 1,86

27 SHC 2,75 2,67 2,55 2,42 2,28 29 SHC 3,17 3,10 2,98 2,85 2,72 31 SHC 3,62 3,54 3,40 3,27 3,15

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

INDOOR UNIT: KPAV180C5VAA OUTDOOR UNIT: GRV180L7TAA

400V 50 Hz RATING CAPACITY 5 kW

AIR FLOW RATE 800 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 4,74 4,60 4,38 4,11 3,79

CM 1,65 1,76 1,89 2,07 2,26 21 SHC 3,25 3,18 3,08 2,95 2,79 23 SHC 3,68 3,61 3,50 3,37 3,22

15 25 SHC 4,10 4,02 3,91 3,78 3,63

27 SHC 4,54 4,45 4,34 4,11 3,79 29 SHC 4,74 4,60 4,38 4,11 3,79 31 SHC 4,74 4,60 4,38 4,11 3,79

TC 5,13 4,93 4,70 4,41 4,07

CM 1,68 1,80 1,94 2,13 2,32 21 SHC 2,84 2,76 2,65 2,52 2,36 23 SHC 3,27 3,17 3,07 2,93 2,78

17 25 SHC 3,70 3,60 3,49 3,36 3,20

27 SHC 4,13 4,01 3,90 3,77 3,62 29 SHC 4,56 4,43 4,33 4,20 4,03 31 SHC 4,99 4,85 4,70 4,41 4,07

TC 5,43 5,25 5,00 4,70 4,33

CM 1,77 1,87 2,00 2,20 2,38 21 SHC 2,38 2,30 2,20 2,07 1,91 23 SHC 2,80 2,73 2,62 2,49 2,34

19 25 SHC 3,21 3,14 3,03 2,91 2,75

27 SHC 3,62 3,57 3,46 3,33 3,17 29 SHC 4,02 3,98 3,87 3,75 3,59 31 SHC 4,45 4,40 4,29 4,16 4,01

TC 5,76 5,57 5,30 4,98 4,59

CM 1,80 1,91 2,06 2,26 2,45 23 SHC 2,35 2,27 2,16 2,03 1,88

21 25 SHC 2,75 2,68 2,59 2,46 2,30

27 SHC 3,17 3,11 3,00 2,88 2,72 29 SHC 3,57 3,52 3,42 3,29 3,14 31 SHC 3,99 3,95 3,84 3,72 3,57

TC 6,15 5,89 5,57 5,21 4,85

CM 1,84 1,96 2,11 2,30 2,51

23 25 SHC 2,31 2,21 2,09 1,96 1,83

27 SHC 2,70 2,62 2,50 2,37 2,24 29 SHC 3,11 3,04 2,92 2,79 2,66 31 SHC 3,55 3,47 3,34 3,21 3,09

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

INDOOR UNIT: KPAV220C5VAA OUTDOOR UNIT: GRV220C7TAA / GRV220L7TAA

400V 50 Hz RATING CAPACITY 6,15 kW

AIR FLOW RATE 900 m³/h

EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 25 30 35 40 43

TC 5,83 5,66 5,39 5,05 4,67

CM 2,30 2,46 2,65 2,90 3,16 21 SHC 4,00 3,92 3,78 3,62 3,44 23 SHC 4,53 4,44 4,31 4,14 3,96

15 25 SHC 5,05 4,95 4,81 4,65 4,47

27 SHC 5,58 5,47 5,33 5,05 4,67 29 SHC 5,83 5,66 5,39 5,05 4,67 31 SHC 5,83 5,66 5,39 5,05 4,67

TC 6,31 6,07 5,78 5,43 5,00

CM 2,36 2,53 2,71 2,99 3,24 21 SHC 3,50 3,40 3,26 3,10 2,90 23 SHC 4,02 3,90 3,77 3,61 3,42

17 25 SHC 4,55 4,43 4,29 4,13 3,93

27 SHC 5,08 4,93 4,80 4,64 4,45 29 SHC 5,61 5,45 5,32 5,16 4,96 31 SHC 6,14 5,96 5,78 5,43 5,00

TC 6,68 6,46 6,15 5,78 5,32

CM 2,48 2,61 2,80 3,07 3,33 21 SHC 2,93 2,83 2,70 2,54 2,35 23 SHC 3,44 3,36 3,22 3,06 2,87

19 25 SHC 3,94 3,86 3,73 3,58 3,38

27 SHC 4,45 4,39 4,25 4,09 3,90 29 SHC 4,95 4,89 4,76 4,61 4,41 31 SHC 5,47 5,41 5,28 5,12 4,93

TC 7,09 6,85 6,52 6,12 5,64

CM 2,53 2,68 2,89 3,16 3,43 23 SHC 2,89 2,79 2,66 2,50 2,31

21 25 SHC 3,39 3,30 3,18 3,02 2,83

27 SHC 3,90 3,82 3,69 3,54 3,34 29 SHC 4,39 4,33 4,21 4,05 3,86 31 SHC 4,91 4,85 4,72 4,57 4,39

TC 7,57 7,25 6,85 6,40 5,96

CM 2,58 2,75 2,95 3,23 3,52

23 25 SHC 2,84 2,71 2,57 2,41 2,25

27 SHC 3,32 3,22 3,08 2,91 2,75 29 SHC 3,82 3,74 3,60 3,44 3,28 31 SHC 4,37 4,26 4,10 3,94 3,80

TC: TOTAL COOLING CAPACITY kW SHC: SENSIBLE HEAT CAPACITY kW CM: COMPRESSOR INPUT kW RATING CONDITIONS

OUTDOOR AMBIENT TEMPERATURE 35°C D.B. INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

23O V 50 Hz 400 - 3N - 50Hz

Rating Conditions Running Amps. A 0.28 0.44 4.02 4.8

Power Input kW 0,066 0,113 2,57 2,8

Full Load Conditions Running Amps. A 0.39 0.55 4.85 5.6

Power Input kW 0,075 0,120 3,18 3,40

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV220C5VAA Outdoor Unit GRV220C7TAA

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

230 V 50 Hz 400 V - 3N - 50Hz

Rating Conditions Running Amps. A 0.30 0.40 3.17 3.6

Power Input kW 0,071 0,086 1,98 2,0

Full Load Conditions Running Amps. A 0.37 0.50 3.7 4.1

Power Input kW 0,070 0,093 2,30 2,40

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV180C5VAA Outdoor Unit GRV180C7VAA

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

23O V 50 Hz 400 - 3N - 50Hz

Rating Conditions Running Amps. A 0.28 0.44 4.02 4.8

Power Input kW 0,066 0,113 2,57 2,8

Full Load Conditions Running Amps. A 0.39 0.55 4.85 5.6

Power Input kW 0,075 0,120 3,18 3,40

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV220C5VAA Outdoor Unit GRV220L7TAA

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor

Performance at

230 V 50 Hz 400 V - 3N - 50Hz

Rating Conditions Running Amps. A 0.37 0.50 2.97 3.6

Power Input kW 0,070 0,093 1,85 2,0

Full Load Conditions Running Amps. A 0.37 0.50 3.7 4.1

Power Input kW 0,070 0,093 2,30 2,40

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

Indoor Unit MCAV180C5VAA Outdoor Unit GRV180L7TAA

Indoor Unit Outdoor Unit

KPAV220C5VAA

GRV220C7TAA

Indoor Unit

Outdoor Unit

Performance at 230 V ~ 50Hz

Rating Conditions

Full Load Conditions

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

KPAV180C5VAA

GRV180C7TAA

Indoor Unit Outdoor Unit

Fan Motor Fan Motor Compressor

Running Amps. A 0.28 0.40 3.15 3.6 Power Input kW 0.072 0.086 1.98 2.0 Running Amps. A 0.33 0.40 3.37 4.1 Power Input kW 0.071 0.082 2.247 2.4

Outdoor Air Temperature 35°C DB Outdoor Air Temperature 43°C DB

Complete Unit

400 V – 3N ~ 50Hz

Performance at 230 V ~ 50Hz

Rating Conditions

Full Load Conditions

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

Indoor Unit Outdoor Unit

Fan Motor Fan Motor Compressor

Running Amps. A 0.28 0.44 4.02 4.8 Power Input kW 0.066 0.113 2.57 2.80 Running Amps. A 0.40 0.55 4.85 5.6 Power Input kW 0.083 0.120 3.18 3.40

Outdoor Air Temperature 35°C DB Outdoor Air Temperature 43°C DB

Complete Unit

400 V – 3N ~ 50Hz

Indoor Unit Outdoor Unit

KPAV220C5VAA

GRV220L7TAA

Indoor Unit

Outdoor Unit

Performance at 230 V ~ 50Hz

Rating Conditions

Full Load Conditions

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

KPAV180C5VAA

GRV180L7TAA

Indoor Unit Outdoor Unit

Fan Motor Fan Motor Compressor

Running Amps. A 0.33 0.40 2.9 3.6 Power Input kW 0.071 0.082 1.847 2.0 Running Amps. A 0.33 0.40 3.37 4.1 Power Input kW 0.071 0.082 2.247 2.4

Outdoor Air Temperature 35°C DB Outdoor Air Temperature 43°C DB

Complete Unit

400 V – 3N ~ 50Hz

Performance at 230 V ~ 50Hz

Rating Conditions

Full Load Conditions

Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB

Indoor Unit Outdoor Unit

Fan Motor Fan Motor Compressor

Running Amps. A 0.28 0.44 4.02 4.8 Power Input kW 0.066 0.113 2.57 2.80 Running Amps. A 0.40 0.55 4.85 5.6 Power Input kW 0.083 0.120 3.18 3.40

Outdoor Air Temperature 35°C DB Outdoor Air Temperature 43°C DB

Complete Unit

400 V – 3N ~ 50Hz

6-2 Electric Wiring Diagrams

Indoor Unit KPAV180C5VAA

WARNING

To avoid electrical shock hazard, be

sure to disconnect power before checking, servicing and/or cleaning any electrical parts

KPAV220C5VAA

Indoor Unit MCAV180C5VAA

MCAV220C5VAA

Outdoor Unit GRV180C7TAA

WARNING

To avoid electrical shock hazard, be

sure to disconnect power before checking, servicing and/or cleaning any electrical parts

GRV220C7TAA

Outdoor Unit GRV180L7TAA

WARNING

To avoid electrical shock hazard, be

sure to disconnect power before checking, servicing and/or cleaning any electrical parts

GRV220L7TAA

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

To prevent abnormal heat generation and the possibility of fire, don’t place obstacles, enclosures and grills in front of or surrounding the air conditioner in a way that may block air flow.

AVOID:

●

direct sunlight.

●

nearby heat sources that may affect performance of the unit.

●

areas where leakage of flammable gas may be expected.

●

places where large amounts of oil mist exist.

DO:

●

select an appropriate position from which every corner of the room can be uniformly air-conditioned. (High on a wall is best)

●

select a location that will hold the weight of the unit.

●

select a location where tubing and drain pipe have the shortest run to the outside.

●

allow room for operation and maintenance as well as unrestricted air flow around the unit. (Fig. 1)

●

install the unit within the maximum elevation difference (H) above or below the outdoor unit and within a total tubing length (L) from the outdoor unit as detailed Table 1 and Fig. 2a.

Indoor Unit







15 cm

min.

15 cm min.

INDOOR UNIT

Front View

INDOOR UNIT

Tubing length (L)

OUTDOOR UNIT

Elevation difference (H)

Fig. 2

Fig. 2a

Fig.1

WARNING

Table 1

* If total tubing length becomes 7.5 to 20 m (max.), charge additional refrigerant (R407c) by 25 g/m.

No additional charge of compressor oil is necessary.

Model

Max. Allowable

Tubing Length at

Shipment (m)

Limit of Tubing

Length (L)

(m)

Limit of Elevation

Difference (H)

(m)

Required Amount of

Additional Refrigerant

(g/m)*

MCAV180C5VAA / KPAV180C5VAA 20

Minimum height from floor level

1.5m

Indoor Unit

Wall

Floor level

For stable operation of the air conditioner, do not install wall-mounted type indoor units less than

1.5m from floor level.

CAUTION

Fig. 2b

7.5 7 25

7.5 30

MCAV220C5VAA / KPAV220C5VAA

AVOID:

●

heat sources, exhaust fans, etc. (Fig. 3)

●

damp, humid or uneven locations.

DO:

●

choose a place as cool as possible.

●

choose a place that is well ventilated.

●

allow enough room around the unit for air intake/exhaust and possible maintenance. (Figs. 4a to 4c)

●

provide a solid base (concrete block, 10 ✕40 cm beams or equal), a minimum of 10 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig.5a and 5b)

●

use lug bolts or equal to bolt down unit, reducing vibration and noise.

Outdoor Unit

Outdoor unit

Hot air

Heat source

Exhaust fan

Fig. 3

Air intake

Min. 10 cm

Air discharge

Min.

5 cm

Min. 40 cm

Valve side Min. 25 cm

Top View

Air intake

Concrete or equal

About 10 cm

Min. 10 cm

Anchor bolts (4 pcs.)

About 40 cm

Fig. 5 - A

Ground

Obstacle

Obstacle above

Air discharge

Min.

2 m

Min.

2 m

Side View

Fig. 4c

Required space around the unit.

Top View

Fig. 4a

Fig. 5a

Fig. 5 - B

Min. 10 cm

Anchor bolts (4 pcs.)

Fig. 5b

Min. 10 cm

Air discharge

Min.

10 cm

Min. 50 cm

Valve side Min. 60 cm

Air intake

Top View

Fig. 4b

GRV180L7TAA mod.

GRV220L7TAA mod.

GRV180/220L7TAA mod.

GRV180L7TAA mod.

GRV220L7TAA mod.

7-2. Remote Control Unit Installation

Position

The remote control unit can be operated from either a non-fixed position or a wall-mounted position.

To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places:

●

In direct sunlight

●

Behind a curtain or other place where it is covered

●

More than 8 m away from the air conditioner

●

In the path of the air conditioner's airstream

●

Where it may become extremely hot or cold

●

Where it may be subject to electrical or magnetic interference

Mounting on a Wall

a) Removable mounting

1) Momentarily hold the remote control unit at the desired mounting position.

2) Confirm that the air conditioner responds correctly when you press keys on the remote control from that position.

3) After confirming correct operation, use a screwdriver to screw the supplied special mounting screw into the wall. (Fig.6a)

4) Hang the remote control unit from the mounting screw.

b) Non-removable mounting

1) Momentarily hold the remote control unit at the desired mounting position.

2) Confirm that the air conditioner responds correctly when you press keys on the remote control from that position.

3) After confirming correct operation, use a screwdriver to screw the supplied special mounting screw into the wall. (Fig.6a)

4) Remove the remote control cover by sliding it downward.

5) Remove the batteries of the remote control unit.

6) Use a screwdriver to screw the remote control unit securing screw into the wall through the hole in the battery compartment. (Fig.6b)

7) Replace the batteries.

8) Again confirm that the remote control unit operates correctly.

Wall

Special mounting screw

Screw

Wall

Fig.6b

Fig.6a

Removable mounting

Non-removable mounting

Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation.

Table 2 lists recommended wire lengths and cross section area for power supply systems.

Refer to the WIRING SYSTEM DIAGRAM for the meaning of "A" and "B" in Table 2.

NOTE

●

Be sure to comply with local codes on running the wire from the indoor unit to the outdoor unit (size of wire and wiring method, etc.).

●

Each wire must be firmly connected.

●

No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part.

To avoid the risk of electric shock, each air conditioner unit must be grounded.

●

Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram. The indoor unit draws its power from the outdoor unit.

WARNING

CAUTION

WIRING SYSTEM DIAGRAM

7-3. Recommended Wire Length and Size

Table 2

Cross-Sectional

Fuse or Circuit

Area (mm

)

2.5 2.5

Model

Breaker Capacity

GRV180C7TAA / GRV180L7TAA

20 A22 20 A

GRV220C7TAA / GRV220L7TAA

(A) Power Supply Wiring Length (m)

(B) Power Line

GRV180C7TAA GRV220C7TAA

INDOOR

UNIT

OUTDOOR

UNIT

Power supply

380 – 400 V – 3N 50Hz

L1 L2

Ground

L1 L2 L3

GRV180L7TAA GRV220L7TAA

8. FUNCTION

8-1. Room Temperature Control

●

Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit.

●

The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.

●

The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 3 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.

●

As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of compressor operation.

●

Thermo. ON : When the room temperature is above T + 1°C (T°C is set temperature).

Compressor ➞ON

●

Thermo. OFF : When the room temperature is equal to or below set temperature T°C.

Compressor ➞OFF

3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes

3 minutes5 minutes

ON OFF ON OFF ON OFFCompressor

ON OFF ON OFF ON OFF

More than

5 minutes

Outdoor fan

Indoor fan

Set speed

T+1 °C

T °Cset temp.

Thermo. OFF

Thermo. ON

Thermo. OFF

Thermo. ON

Room temp.

Signal from remote control unit

8-2. Dry Operation (Dehumidification)

●

Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature.

● Intermittent ventilation occurs by switching the indoor fan speed between L ↔ LL.

● Dry operation does not occur when the room temperature is under 15°C, which is the monitor zone.

● When the compressor stops, the indoor fan stops as well.

8-3. Freeze Prevention

●

This function prevents freezing of the indoor heat exchange coil.

●

When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until the temperature rises above 8°C or 6 minutes has elapsed.

ON ON ON ON

OFFOFF

Set speed

More than

10 minutes

6 minutes

T+1 °C

Indoor heat exch. coil temp.

–1 °C

Compressor

Indoor fan

Room temp.

Thermo. OFF

Thermo. ON

Set temp. T °C

More than

10 minutes

More than

6 minutes

Set speed

NOTE

Room temp.

Cooling operation

T+2 °C

Set temp. T °C

T–1 °C

Monitor zone Both the indoor and outdoor units stop.

Room temp. 15 °C

✻Dry A zone

Compressor : FMI (indoor fan) :

Continuous operation L (low speed) / LL (very low speed) intermittent ventilation

only while the compressor is ON.

✻Dry B zone

Compressor : FMI (indoor fan) :

Intermittent operation (ON for 3 minutes and OFF for 9 minutes) L (low speed) / LL (very low speed) intermittent ventilation

only while the compressor is ON.

8-4 LOW AMBIENT FAN SPEED CONTROL < FOR GRV180L7TAA >

●

This function protects the compressor from being damaged due to flowback of the liquid refrigerant to the compressor when the outdoor temperature is very low.

●

When the air temp. thermistor (TH4) on the outdoor units detects a change in temperature, the solid state relay (SSR) inside the electrical component box activates to control the fan speed accordingly.

●

As the outdoor temperature decreases and drops below 28.0°C, the outdoor fan speed starts to gradually slow down following an oblique line as in the diagram below.

●

Outdoor fan speed changes more or less according to the room temperature.

●

When the outdoor temperature goes above 30.0°C, this fan speed control does not work.

Conditions: Room temperature 19.4°C DB/13.9°C WB

800

1000

600

400

200

–10 –5 0 5 10 15 20 25 30 35

28.0

30.0

900 rpm

(HIGH)

Outdoor ambient temperature (°C)

Outdoor fan speed (rpm)

Coil temp. thermistor (TH3)

Air temp. thermistor (TH4)

(FOR GRV220L7TAA)

This function protects the compressor from being damaged due to flowback of the liquid refrigerant to the compressor when the outdoor temperature is very low.

When the outdoor air tem. thermistor (TH4) on the outdoor unit detects a change in temperature,(below

28.5°C) the outdoor fan speed goes to low speed of the motor. When the Liquid Pressure decresases and drops below 16 bar,the outdoor fan speed startito gradually slow

down following the line as in the diagram below. Outdoor fan speed changes more or less according to the liquid pressure,the liquid pressure changes as a

consequence of the outdoor ambient temperature. When the outdoor temperature goes above 31.5°C,the fan speed goes to the high speed of the motor.

9. REFRIGERANT R407C : SPECIAL PRECAUTIONS WHEN SERVICING UNIT

9-1. Characteristics of new refrigerant R407C

9-1-1.What is new refrigerant R407C

R407C is a new refrigerant that contains three types of non-azeotropy-type mixed refrigerant which does not adversely affect the Earth's ozone layer. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant R22

9-1-2.Components (mixing proportions)

HFC32 (23%) / HFC125 (25%) / HFC134a (52%)

9-1-3.Characteristics

● Less toxic, more chemically stable refrigerant.

●

Composition of refrigerant R407C changes whether it is in gaseous phase or liquid phase. Thus, when there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in composition of the remaining refrigerant.

Therefore, do not add new refrigerant.

Instead, recover the remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified amount of refrigerant with the new refrigerant at its normal mixed composition state (liquid phase).

●

When refrigerant R407C is used, the composition will differ depending on whether it is in gaseous or liquid phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state.

Thus, always charge the refrigerant while it is in the liquid phase.

● Ether-type oil is used for the compressor oil for R407C-type units, which is

different from the mineral oil used for R22. Thus more attention to moisture prevention and faster replacement work compared with conventional models are required.

9-2. Checklist before servicing

●

Tubing precautions

Refrigerant R407C is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation.

●

No addition of compressor oil for R407C

No additional charge of compressor oil is permitted.

●

No use of refrigerant other than R407C

Never use a refrigerant other than R407C.

●

If refrigerant R407C is exposed to fire

Through welding, etc., toxic gas may be released when R407C refrigerant is exposed to fire. Therefore, be sure to provide ample ventilation during installation work.

●

Caution in case of R407C leak

Check for possible leak points with the special leak detector for R407C. If a leak occurs inside the room, immediately provide thorough ventilation.

CAUTION

9-3. Tools specifically for R407C

●

For servicing, use the following tools for R407C

●

The above tools specifically for R407C must not be used for R22. Doing so will

cause malfunction of the unit.

●

For the above vacuum pump (✽1, ✽2) and vacuum pump adapter (✽3) , those for

R22-type units can be used for R407C-type. However, they must be used exclusively for R407C and never alternately with R22.

9-4. For tubing installation procedures

●

When the tubes are connected,

always apply HAB oil on the flare portions to improve the sealing of

tubing.

The following is the HAB oil generally used:

Esso: ZERICE S32

For details on tubing installation procedures, refer to the installation manuals attached to the indoor unit and outdoor unit.

Tool Distinction Tool Name

• Gauge manifold

• Charging hose

• Gas leak detector

• Refrigerant cylinder

• Charging cylinder

Tools specifically for R407C • Refrigerant recovery unit

• Vacuum pump with anti-reverse flow (✽1) (Solenoid valve-installed type, which prevents oil from flowing back into the unit when the power is off, is recommended.)

• Vacuum pump (✽2) ..... can be used if the following adapter is attached.

• Vacuum pump adapter (reverse-flow prevention adapter) (✽3). (Solenoid valve-installed adapter attached to a conventional vacuum pump.)

• Electronic scale for charging refrigerant

• Flare tool

• Bender

Tools which can be commonly • Torque wrench used for R22 and R407C • Cutter, Reamer

• Welding machine, nitrogen gas cylinder

CAUTION

NOTE

9-5. In case of compressor malfunction

●

Should the compressor malfunction, be sure to replace compressor as quickly as

possible.

●

Use only the tools indicated exclusively for R407C. ➞ See "10-3. Tools specifically

for R407C".

9-5-1.Procedure for replacing compressor

(1) Recovering refrigerant

• Any remaining refrigerant inside the unit should not be released to the atmosphere, but recovered using the refrigerant recovery unit for R407C.

• Do not reuse the recovered refrigerant, since will contain impurities.

(2) Replacing compressor

• Soon after removing pinched pipes of both discharge and suction tubes of the new compressor, replace it quickly.

(3) Checking for sealing

• Use nitrogen gas for the pressurized gas, and never use a refrigerant other than R407C. Also do not use oxygen or any flammable gas.

(4) Evacuation

•

Use a solenoid valve-installed vacuum pump

so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back.

• The equipment may be damaged if moisture remains in the tubing, thus carry out the evacuation thoroughly.

• When using a vacuum pump with exhaust air volume more than 25L/min. and ultimate vacuum pressure rate of 0.05Torr:

CAUTION

(1). Recovering refrigerant

(2). Replacing compressor

(3). Checking for sealing

(4). Evacuation

(5). Recharging

Standard time of evacuation

Length of tubing Less than 10 m More than 10 m

Time More than 10 min. More than 15 min.

Valve

Single valve

Charge the liquid refrigerant with the cylinder in the up-side-down position.

Single valve (with siphon tube)

Charge with the cylinder in the normal position.

Liquid

Configurations and characteristics of cylinders

Charging

cylinder

Open

Refrigerant

cylinder

Liquid

NO!

Fig. 2

Fig. 1

Fig.3

(5) Recharging

•

Be sure to charge the specified amount of

refrigerant in liquid state

using the service port of wide tube service valve. The proper amount is listed on the unit's nameplate.

When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.

●

Never charge a large amount of liquid refrigerant at once to the unit. This may cause damage to the compressor.

• When charged with a refrigerant cylinder, use the electronic scale for charging refrigerant. In this case, if the volume of refrigerant in the cylinder becomes less than 20% of the fully-charged amount, the composition of the refrigerant starts to change. Thus,

do not use the refrigerant if the amount in the refrigerant cylinder is less than 20%.

Also, charge the minimum necessary amount to the cylinder before using it for charging the air conditioning unit.

Example:

In case of charging refrigerant to a unit requiring

0.76Kg using a capacity of 10Kg-cylinder, the minimum necessary amount for the cylinder is:

0.76 + 10 x 0.20 = 2.76Kg

For the remaining refrigerant, refer to the instructions of the refrigerant manufacturer.

• If using a charging cylinder, transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder.

Prepare an evacuated charging cylinder beforehand.

●

To prevent the composition

of R407C from changing, never bleed the refrigerant gas into the atmosphere while transferring the refrigerant. (Fig. 3)

Do not use the refrigerant if the amount in the charging cylinder is less than 20%.

CAUTION

9-6. In case refrigerant is leaking

●

Never attempt to charge additional refrigerant when refrigerant has been leaking

from the unit. Follow the procedure described below to locate points of leaks and carry out repairs, then recharge the refrigerant.

(1) Detecting Leaks

• Use the detector for R407C to locate refrigerant leak points.

(2) Recovering refrigerant

• Never release the gas to the atmosphere, recover residual refrigerant using the refrigerant recovery unit for R407C, instead.

• Do not reuse the recovered refrigerant because its composition will have been altered.

(3) Welding leaking points

• Confirm again that no residual refrigerant exists in the unit before starting welding.

• Weld securely using flux and wax for R407C.

• Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen (N2) in the refrigerant circuit of the unit. Leave ends of tubes open during welding.

(4) Checking for sealing

• Use nitrogen gas for the pressurized gas, and never use a refrigerant other than R407C. Also do not use oxygen or any flammable gas.

(5) Evacuation

•

Use a solenoid valve-installed vacuum pump

so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back.

• The equipment may be damaged if moisture remains in the tubing, thus carry out the evacuation thoroughly.

• When using a vacuum pump with exhaust air volume more than 25L/min. and ultimate vacuum pressure rate of 0.05Torr:

(2). Recovering refrigerant

(3). Welding leaking points

(4). Checking for sealing

(5). Evacuation

(6). Recharging

(1). Detecting leaks

CAUTION

Standard time of evacuation

Length of tubing Less than 10 m More than 10 m

Time More than 10 min. More than 15 min.

(6) Recharging

•

Be sure to charge the specified amount of

refrigerant in liquid state

using the service port of wide tube service valve. The proper amount is listed on the unit's nameplate.

When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.

●

Never charge a large amount

of liquid refrigerant at once to the unit. This may cause damage to the compressor.

do not use the refrigerant if the amount in the refrigerant cylinder is less than 20%.

Also, charge the minimum necessary amount to the

cylinder before using it for charging the air conditioning unit.

Example:

In case of charging refrigerant to a unit requiring

0.76Kg using a capacity of 10Kg-cylinder, the minimum necessary amount for the cylinder is:

0.76 + 10 x 0.20 = 2.76Kg

For the remaining refrigerant, refer to the instructions of the refrigerant manufacturer.

• If using a charging cylinder, transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder.

Prepare an evacuated charging cylinder beforehand.

●

To prevent the composition

of R407C from changing, never bleed the refrigerant gas into the atmosphere while transferring the refrigerant. (Fig. 6)

Do not use the refrigerant if the amount in the charging cylinder is less than 20%.

CAUTION

Valve

Single valve

Charge the liquid refrigerant with the cylinder in the up-side-down position.

Single valve (with siphon tube)

Charge with the cylinder in the normal position.

Liquid

Fig. 4

Fig. 5

Configurations and characteristics of cylinders

Charging

cylinder

Open

Refrigerant

cylinder

Liquid

NO!

Fig. 6

9-7. Charging additional refrigerant

9-7-1.When tubes are extended

• Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit.

Charge additional refrigerant in liquid state.

●

Never charge additional refrigerant if refrigerant is leaking from the unit. Follow

instructions given in "10-6. In case refrigerant is leaking" and completely carry out repairs. Only then should you recharge the refrigerant.

9-8. Retro-fitting existing systems

9-8-1 Use of existing units

•

Never use new refrigerant R407C for existing units which use R22.

This will cause the air conditioner to

operate improperly and may result in a hazardous condition.

9-8-2 Use of existing tubing

• If replacing an older unit that used refrigerant R22 with a R407C unit,

do not use its existing tubing

. Instead,

completely new tubing must be used.

CAUTION

10. TROUBLESHOOTING

10-1. Check before and after

troubleshooting

10-1-1. Check power supply wiring.

●

Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the outdoor unit.

10-1-2. Check inter-unit wiring.

●

Check that inter-unit wiring is correctly connected to the indoor unit from the outdoor unit.

10-1-3. Check power supply.

●

Check that voltage is in specified range (±10% of the rating).

●

Check that power is being supplied.

10-1-4. Check lead wires and connectors in

indoor and outdoor units.

●

Check that coating of lead wires is not damaged.

●

Check that lead wires and connectors are firmly connected.

●

Check that wiring is correct.

WARNING

Hazardous voltage can cause ELECTRIC SHOCK or DEATH. Disconnect power or turn off circuit breaker before you start checking or servicing.

Indoor

unit

Outdoor

unit

Inter-unit wiring

Power supply: 380 V – 400 V 3N ~ 50 Hz

L1 L2 L3

L1 L2

Ground

1 2

4 4

●

Check that power supply wires are correctly connected to terminals L1, L2 , L3 and N on the terminal plate in the outdoor unit.

THREEPHASE MODELS

380V – (400V)

220V – (230V)

THREEPHASE MODELS

10-2. Air conditioner does not operate.

10-2-1. Circuit breaker trips (or fuse blows).

A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)

●

There is a possibility of ground fault.

●

Check insulation resistance.

If resistance value is 2MΩ or less, insulation is defective (“NO”).

Indoor

unit

Ground

Outdoor

unit

Power supply

Power supply wiring

Inter-unit wiring

Circuit breaker

Measure insulation resistance of electrical parts in outdoor unit.

Set circuit breaker to OFF.

Measure insulation resistance of electrical parts in indoor unit.

Remove both power supply wires and inter-unit wires from terminal plate in outdoor unit.

Measure insulation resistance of outdoor unit.

•

Remove inter-unit wires from terminal plate in indoor unit.

Measure insulation resistance of indoor unit.

•

Insulation of outdoor unit is defective.

Insulation of indoor unit is defective.

10-2-2. Neither indoor nor outdoor unit runs.

A. Power is not supplied.

B. Check remote control unit.

C. Check "OPERATION selector" switch in the indoor unit.

D. Check transformer in indoor unit.

•

Check power supply. Power is being supplied to the

outdoor unit.

Circuit breaker is tripped.

Power failure

Reset breaker.

Wait for recovery or contact power company.

YES

•

OPERATION selector switch is set in ON position.

Set OPERATION selector switch to ON.

Switch Ass'y or indoor PCB Ass'y is defective.

Refer to Step C below.

Clean transmitter.

•

Try to run with another remote control unit.

First remote control unit is defective.

•

Check for residue buildup on transmitter of remote control unit.

•

Check for residue buildup on remote control receiver on front of indoor unit.

Clean receiver.

Does not run.

•

Measure resistance of primary and secondary winding. (TR2)

E. Check fuse on the indoor PCB Ass'y.

F. Check TIMER on the remote control unit.

•

Check fuse on indoor PCB Ass'y for continuity. (F)

•

Check operation lamp to see if light is ON.

Light is OFF

•

Measure resistance of primary and secondary winding of transformer. (TR)

Indoor PCB Ass'y or switch Ass'y is defective.

•

Measure resistance of indoor fan motor winding. (FMI )

•

Measure resistance of outdoor fan motor winding. (FMO)

•

Measure resistance of flap motor winding. (FLP)

Measure resistance of either power relay or magnetic contactor. (MG)

If fuse has been blown,

Measure resistance of PTC thermistor. (PTC)

Replace the fuse.

•

Timer is turned ON. Check to see if "ON" is displayed on remote control

YES

Press TIMER SELECT button to select NORM. (NORM. is position when neither ON nor OFF appears on display.)

10-2-3. Only outdoor unit does not run.

A. Check MODE selector switch of remote control unit.

B. Check setting temperature.

C. Check power relay in outdoor unit.

D. Check magnetic contactor in outdoor unit.

Is room temperature too low ?

Try to lower setting temperature by temperature setting button cooler.

Outdoor unit still does not run.

Remote control unit is defective.

•

Try to run using another remote control unit.

•

Measure coil resistance of power relay.

Check indoor PCB Ass'y.

(PR)

•

Check that MODE selector switch is not set at "FAN".

If it is set at FAN,

Set to "COOL".

Outdoor unit does not run when air conditioner is in following conditions.

●

During thermo OFF (when the room temperature is below the set temperature).

●

During freeze prevention (for at least 6 minutes).

NOTE

•

Measure coil resistance of magnetic contactor.

Check indoor PCB Ass'y.

(MG)

E. Check negative phase relay.

F. Check magnetic contactor.

G. Check indoor PCB Ass'y.

H. Check compressor motor protector.

Check negative phase relay to see if it has operated.

•

Rewire power supply wires.

•

YES

(47C)

Check coil resistance of magnetic contactor.

• (MG)

YES

Check compressor motor internal protector.

• (49C)

Temperature of compressor is abnormally high.

Refrigerant gas shortage.

YES

Charge refrigerant gas.

Check compressor. There is a possibility of locked rotor.

•

NO 90% or more of

rated voltage.

It’s operated.

Check compressor motor overcurrent relay. (51C)

•

Clean heat exchanger or remove obstacles.

•

Check power supply voltage. Voltage is abnormally low.

•

Outdoor heat exchanger coil is dirty or there are obstacles near air suction inlet.

10-3. Some part of air conditioner does not operate.

10-3-1. Only indoor fan does not run.

10-3-2. Only outdoor fan does not run.

Fan cannot be turned.

•

Check fan rotation. Turn fan gently once or twice by hand.

•

Check fan casing foreign matter on inside.

Fan motor burnout or foreign matter in bearings.

Remove foreign matter or repair.

Repair or replace.

•

Measure resistance of indoor fan motor winding.

•

Check fan motor capacitor.

Fan cannot be turned.

•

Check fan rotation. Turn fan gently once or twice by hand.

•

Check fan casing foreign matter on inside.

Fan motor burnout or foreign matter in bearings.

Remove foreign matter or repair.

Repair or replace.

•

Measure resistance of indoor fan motor winding.

•

Check fan motor capacitor.

•

Measure coil resistance of relay. (1X)

(Only for models CLR188E38)

●

Check transformer in outdoor unit. (GRV180L7TAA Only)

●

Check fuse on outdoor PCB Ass'y. (GRV180L7TAA Only)

•

Measure resistance of primary and secondary winding. (TR2)

If fuse blows,

Check fuse on outdoor PCB Ass’y for continuity.

•

Measure resistance of primary winding of transformer.

• (TR2)

Measure resistance of outdoor fan motor winding.

•

Outdoor PCB Ass’y is defective.

•

(F)

10-3-3. Only compressor does not run.

•

Check solid state relay in outdoor unit.

(SSR)

( For GRV180L7TAA)

•

Measure resistance of flap motor winding.

(FLP)

•

Measure resistance of compressor motor winding.

10-3-4. Only flap motor does not run

10-3-5. Function of outdoor fan speed control does not work properly.

10-4. Air conditioner operates, but abnormalities are observed.

10-4-1. Poor cooling.

10-4-2. Excessive cooling.

Air filter is clogged.

YES

Temperature difference is small.

YES

Temperature difference between suction and discharge air is large enough (approx. 10 deg. or more).

Possibility of gas shortage.

YES

•

Check position of remote control unit. Cool air from air conditioner reaches position directly.

•

Change position of remote control unit.

•

Wide and narrow tubes between indoor unit and outdoor unit are insulated.

Insulate both wide and narrow tubes separately and then tape together.

•

Measure temperature of suction and discharge air of air conditioner.

Charge refrigerant gas (R407c).

Check for clogging of air filter.

•

Fan speed is set to LOW.

Clean filter.

Set fan speed to either HIGH or MEDIUM.

•

Review cooling load estimate, if performance of air conditioner is normal.

Reduce cooling load or replace the air conditioner with larger capacity.

•

Set temperature is suitable.

Set temperature to higher or lower value using temperature setting buttons of the remote control unit.

•

Remote control unit is placed where it can detect room temperature properly.

Change position of remote control unit.

10-5. If a sensor is defective.

10-5-1. Indoor coil temp. thermistor (TH1) is defective.

A. Open

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low indoor coil temperature.

In Cooling mode: Finction of freeze prevention continues to work. That is, the controller turns both

compressor and outdoor fan motor periodically ON and OFF for several minutes. (Refer to "5-2. Freeze Prevention")

B. Short

When thermistor is short, the air conditioner will be in the following conditions as the controller tries to detect extremely high indoor coil temperature.

In Cooling mode: Function of freeze prevention will not work even when the frost builds up on indoor heat

exchanger coil

10-5-2. Room temp. thermistor (TH2) is defective.

A. Open

When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature.

In Cooling mode: The air conditioner soon stops and will not start again.

(Thermo.OFF) Neither outdoor fan nor compressor runs.

B. Short

When thermistor is short, the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature.

In Cooling mode: The air conditioner continues to operate. (Thermo.ON)

Both the outdoor fan and compressor do not stop. As a result, the room becomes too cold.

Definition of Open or Short Circuit of Sensor (Thermistor)

Open...A lead wire is broken or disconnected or the circuit inside the temperature sensor is open . Short...The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal

part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside the temperature sensor is closed.

NOTE

Temperature sensor

Lead wires

Thermistor Structure

11-1. Measurement of Insulation

Resistance

●

The insulation is in good condition if the resistance exceeds 2MΩ.

11-1-1.Power Supply Wires

Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig. 1)

Then measure the resistance between the ground wire and the other power wire. (Fig. 1)

11-1-2.Indoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate. (Fig. 2) Note that the ground line terminal should be skipped for the check.

11-1-3.Outdoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate. (Fig. 2)

11-1-4.Measurement of Insulation

Resistance for Electrical Parts

Disconnect the lead wires of the desired electric part from terminal plate, capacitor, etc. Similarly disconnect the connector. Then measure the insulation resistance. (Figs. 3 and 4)

Refer to Electric Wiring Diagram. If the probe cannot enter the poles because the hole is

too narrow then use a probe with a thinner pin.

NOTE

11. CHECKING ELECTRICAL COMPONENTS

Insulation tester

Probe

Clip

Ground wire

Terminal plate

Copper tube or metallic part

Clip

Insulation tester

Probe

Copper tube or metallic part

Clip

Insulation tester

Probe

Clip

Insulation tester

Probe

Metallic part

From fan motor, compressor and other parts

Fig. 1

Fig. 2

Fig. 3

Fig. 4

11-2. Checking Continuity of Fuse

on PCB Ass'y

●

Remove the PCB Ass’y from the electrical component box. Then pull out the fuse from the PCB Ass’y. (Fig. 5)

●

Check for continuity using a multimeter as shown in Fig. 6.

11-3. Checking Motor Capacitor

Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 7. Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the maximum value.

The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original position.

The range of deflection and deflection time differ according to the capacity of the capacitor.

Fuse

PCB Ass’y

Fuse

Compressor motor capacitor

Fan motor capacitor

Multimeter

Fig. 5

Fig. 6

Fig. 7

12-1. Removing Air Intake Grille

(1) Hold both ends and pull forward to open the

air intake grille. (Fig. 1)

(2) Remove the metal clips connecting the unit and the

grille. First, with a screwdriver, loosen the * marked screw a little at the right side clip (DO NOT loosen it too much, otherwise, the screw and small metal parts will fall off inside.), then press

on the stopper and pull off. (Fig. 2) (3) Do the same procedure for the left metal clip. (4) Unlatch the 2 tabs on the lower part of the grille to

take it off completely.

12. DISASSEMBLY PROCEDURE FOR INDOOR UNIT

IMPORTANT! Please Read Before Starting

Safety precautions for servicing the CEILING-MOUNTED indoor unit

Center latch

Air intake grille

Metal clip

Air intake grille

Unit

For Floor Installation

Fig.1

Fig.2

●

Before attempting to replace heavy and bulky parts such as the evaporator and fan motor, disconnect the indoor unit from the system and place it on the floor. Refer to the steps given below.

●

When checking or servicing the air intake grille, side panels, or electrical component box, first check that power is completely disconnected. Pay utmost care that your working platform is stable enough. Also, do not drop any replaced parts and tools on the floor.

12-2. Removing Side Panels

(1) Remove the 3 screws attaching the left side panel.

(Fig. 3) (2) Note the position of the hook on the inside of the

left side panel. To disengage the hook from the slot,

slide down the panel for removal. (Fig. 3) (3) Do the same procedure for the right side panel.

12-3. Access and Removal of

Electrical Component Box

(1) Remove the front screw with a screwdriver. (Fig. 4) (2) Slide the lid out and up. (Fig. 4) (3) Disconnect the wiring as necessary. (4) Remove the 4 screws, then pull out the electrical

component box. (Fig. 5)

Side panel

Tapping screws (4 × 10 mm)

Hook

Slot

Screw

Electrical component box

Screw

Connectors

Hazardous voltage can cause ELECTRIC SHOCK or DEATH. Disconnect the power or turn off circuit breaker before you start checking or servicing.

WARNING

Fig.3

Fig.4

Fig.5

12-4. Removing Flap Motor

(1) Remove the 3 screws used to mount the top panel.

(Fig. 6) (2) While unlatching the 2 tabs inside the back of the

top panel, lift the top panel diagonally in the

direction of the arrow.(Fig. 6) (3) Remove the 2 screws to pull off the flap motor.

The arm and cam come off together with the motor.

(Fig. 7)

12-5. Removing Evaporator

(=Indoor Heat Exchange Coil)

(1) Remove the 7 screws used to mount the blades.

(Fig. 8) (2) Lift the blades in the direction of the arrow.(Fig. 8)

Top panel

Flap motor

Screw

Blade

Arm

Cam

Screw

Flap motor

Screw

Blades

Fig.6

Fig.7

Fig.8

(3) Remove the 6 screws of the front panel and pull it

toward you. (Fig. 9)

(4) Remove the 2 screws used to mount the

evaporator. (Fig. 10) (5) Remove the rubber cap to pull the thermistor out of

the evaporator. (Fig. 10) (6) Cut the plastic clamp securing the drain hose to the

front fan casing. (Fig. 10)

(7) The evaporator is built into the drain pan. Pull out

the drain pan together with the evaporator in the

direction of the arrow. (Fig. 10)

The foamed polystyrene drain pan is fragile: DO NOT apply excessive force when removing it.

(8) The evaporator can be removed by sliding it out

from the drain pan in the direction of the arrow.

(Fig. 11)

Front panel

Screw

Plastic clamp

Drain pan

Screw

Rubber cap

Thermistor

Drain hose

Front fan casing

Drain pan

Evaporator (Indoor coil)

Mounting plate

Fig.9

Fig.10

Fig.11

IMPORTANT

12-6. Removing Fan and Fan Motor

(1) Unlatch the 2 hooks on each side to take off the

front fan casing. (Fig. 12)

(2) Remove the 2 screws attaching the rear fan casing

and then pull the fan casing out.

(3) Insert a hex wrench in the fan boss and turn it

counterclockwise to loosen the centrifugal fan.

The fan can be removed by sliding it to the left.

(Fig. 14)

(4) Remove the 4 bolts to remove the fan motor from

the frame. (Fig. 15)

Hook

Front fan casing

Rear fan casing

Hex wrench (3mm or 7/64")

Centrifugal fan

Bolts (M6)

Fan motor

Frame

Fig.12

Fig.13

Fig.14

Fig.15

S.A.C. - printed in italy

R.D. 28 Reyrieux BP 131 - 01601 Trévoux CEDEX France

Tél. 04.74.00.92.92 - Fax 04.74.00.42.00

R.C.S. Bourg-en-Bresse B 759 200 728

Technibel MCAV180/220C5VAA, GRV180L7TAA, GRV220C7TAA, GRV180C7TAA, KPAV180/220C5TAA Technical Data & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual