Sanyo C2462R User's Manual

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Sanyo C2462R User's Manual | Manualzz

TECHNICAL DATA

&

SERVICE MANUAL

KS2462R / C2462R, CL2462R

FILE NO.

SPLIT SYSTEM AIR CONDITIONER

INDOOR MODEL No.

KS2462R

PRODUCT CODE No.

854 019 00

OUTDOOR MODEL No.

C2462R

CL2462R

PRODUCT CODE No.

854 019 01

854 019 02

Indoor Unit Outdoor Unit

KS2462R C2462R

CL2462R

854648419200

– 1 –

REFERENCE NO. SM 830092

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.

CAUTION

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.

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 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 Sys-tems)

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

• Ventilate the room well, in the event that refrigerant gas leaks during the installation. Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of poisonous gas.

• Keep all tubing runs as short as possible.

• 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 leak-free connection.

• Check carefully for leaks before starting the test run.

NOTE

Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your particular model is specified as either

“narrow” or “wide” rather than as “liquid” or “gas”.

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 when installation is finished. Check that no metal scraps or bits of wiring have been left inside the unit.

CAUTION

• Ventilate any enclosed areas when installing or testing the refrigeration system. Contact of refrigerant gas with fire or heat can produce poisonous gas.

• Confirm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove, gas water heater, electric room heater or other heat source, it can cause the generation of poisonous gas.

SM830092

– 2 –

Table of Contents

1.

OPERATING RANGE ....................................................................................... 4

2.

SPECIFICATIONS ............................................................................................ 5

(1) Unit Specifications ...................................................................................... 5

(2) Major Component Specifications ................................................................ 7

(A) Indoor Unit ............................................................................................ 7

(B) Outdoor Unit .......................................................................................... 8

(3) Other Component Specifications .............................................................. 10

(A) Indoor Unit .......................................................................................... 10

(B) Outdoor Unit ........................................................................................ 12

3.

DIMENSIONAL DATA ..................................................................................... 13

(1) Indoor Unit ................................................................................................ 13

(2) Outdoor Unit .............................................................................................. 14

4.

COOLING CAPACITY..................................................................................... 15

5.

PERFORMANCE CHARTS ............................................................................ 17

(1) Operating Current ..................................................................................... 17

(2) High and Low Pressure ............................................................................. 19

6.

AIR THROW DISTANCE CHART ................................................................... 21

7.

REFRIGERANT FLOW DIAGRAM ................................................................. 22

8.

INSTALLATION INSTRUCTIONS .................................................................. 23

9.

ELECTRICAL DATA ....................................................................................... 29

10.

ELECTRICAL WIRING DIAGRAMS ............................................................... 30

(1) Indoor Unit ................................................................................................ 30

(2) Outdoor Unit .............................................................................................. 31

11.

PROCESSES AND FUNCTIONS.................................................................. 35

(1) Room Temperature Control ...................................................................... 35

(2) Dry Operation ............................................................................................ 36

(3) Freeze Prevention ..................................................................................... 37

(4) Outdoor Fan Speed Control ...................................................................... 38

12.

SERVICE PROCEDURES .............................................................................. 39

(1) Troubleshooting ........................................................................................ 39

(2) A Sensor is Defective ................................................................................ 50

(3) Checking the Electrical Components ........................................................ 51

SM830092

– 3 –

1. OPERATING RANGE

KS2462R / C2462R

Temperature

Maximum

Minimum

Indoor Air Intake Temp.

Outdoor Air Intake Temp.

95

°

F DB / 71

°

F WB

67

°

F DB / 57

°

F WB

115

67

°

°

F DB

F DB

KS2462R / CL2462R

Temperature

Maximum

Minimum

Indoor Air Intake Temp.

Outdoor Air Intake Temp.

95

°

F DB / 71

°

F WB

67

°

F DB / 57

°

F WB

115

0

°

°

F DB

F DB

– 4 –

SM830092

2. SPECIFICATIONS

1-1 Unit Specifications

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Indoor Unit

Outdoor Unit

KS2462R

C2462R

230 - 208 V / 1 Phase / 60 Hz

Cooling

27,000 26,000

Air circulation (Hi)

Moisture removal (High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

S.E.E.R

Max. starting amperes

BTU / h kW

Cu.ft. / min.

Pints / h

VAC

VAC

A

A

W

%

BTU / Wh

A

7.912

559

6.5

230

10.2

12.5

2,240

95.5

13.0

61

187 – 253

7.619

519

6.4

208

10.9

13.5

2,200

97.0

13.0

61

FEATURES

Controls

Timer

Fan speed Indoor / Outdoor

Air deflection

Air filter

Remote controller (Accessory)

Refrigerant control

Horizontal / Vertical

Refrigerant tubing connections

Compressor

Operation sound Indoor - Hi/Me/Lo dB - A

Outdoor - Hi dB - A

REFRIGERANT TUBING

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference between the two units

Refrigerant tube outer diameter

Narrow tube

Wide tube ft. (m) ft. (m) ft. (m) in. (mm) in. (mm)

Microprocessor

ON/OFF 24-hours & Program

3 and Automatic control / 2 (Auto)

– / Automatic

Washable, easy access

RCS - 1PS4U - G

Capillary tube

Flare type

Scroll

48 / 42 / 38

55

132 ( 40 )

23 ( 7 )

50 ( 15 )

3 / 8 (9.52)

3 / 4 (19.05)

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions Height

Width

Package dimensions

Depth

Height

Width

Net weight

Shipping weight

Shipping volume

Depth lbs. (kg) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) lbs. (kg) lbs. (kg) 44

5.7

Indoor unit

R410A - 6.6 (3)

(330)

Outdoor unit

36-5/8 (930) 13

44-7/8

8-31/32

12-25/32

48-15/32

15-31/32

40

(1,140)

(228)

(325)

(406)

(406)

(18)

(20)

(0.162)

37

13-3/8

39-3/4

39-3/8

15-3/4

150

190

14.1

(940)

(340)

(1,010)

(1,000)

(400)

(68)

(86.5)

(0.40)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Cooling:

Rating conditions (*) : Indoor air temperature 80

°

F DB / 67

°

F WB, Outdoor air temperature 95

°

F DB / 75

°

F WB

Full load conditions (**) : Indoor air temperature 80

°

F DB / 67

°

F WB, Outdoor air temperature 115

°

F DB

SM830092

– 5 –

2. SPECIFICATIONS

1-1 Unit Specifications

MODEL No.

POWER SOURCE

PERFORMANCE

Capacity

Air circulation (Hi)

Moisture removal (High)

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running amperes*

Max. running amperes**

Power input

Power factor

S.E.E.R

Max. starting amperes

Indoor Unit

Outdoor Unit

BTU / h kW

Cu.ft. / min.

Pints / h

VAC

VAC

A

A

W

%

BTU / Wh

A

FEATURES

Controls

Timer

Fan speed Indoor / Outdoor

Air deflection

Air filter

Remote controller (Accessory)

Refrigerant control

Horizontal / Vertical

Refrigerant tubing connections

Compressor

Operation sound Indoor - Hi/Me/Lo dB - A

Outdoor - Hi dB - A

REFRIGERANT TUBING

KS2462R

CL2462R

230 - 208 V / 1 Phase / 60 Hz

Cooling

27,000 26,000

7.912

559

6.5

230

10.2

12.5

2,240

95.5

13.0

61

187 – 253

Microprocessor

1-hour OFF, ON/OFF 12-hours & Program

3 and Automatic control / 3 (Auto)

– / Automatic

Washable, easy access

RCS - 1PS4U - G

Capillary tube

Flare type

Scroll

48 / 42 / 38

55

7.619

519

6.4

208

10.9

13.5

2,200

97.0

13.0

61

Limit of tubing length

Limit of tubing length at shipment

Limit of elevation difference between the two units

Refrigerant tube outer diameter

Narrow tube

Wide tube ft. (m) ft. (m) ft. (m)

132 ( 40 )

23 ( 7 )

50 ( 15 )

Refrigerant amount at shipment

DIMENSIONS & WEIGHT

Unit dimensions

Package dimensions

Net weight

Shipping weight

Shipping volume

Height

Width

Depth

Height

Width

Depth in. (mm) in. (mm) lbs. (kg) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) lbs. (kg) lbs. (kg)

13

40

44

5.7

Indoor unit

44-7/8

8-31/32

12-25/32

48-15/32

15-31/32

(1,140)

3 / 8 (9.52)

3 / 4 (19.05)

R410A - 6.6 (3)

(330)

(228)

(325)

(406)

(406)

(18)

(20)

(0.162)

Outdoor unit

36-5/8 (930)

37

13-3/8

39-3/4

39-3/8

15-3/4

150

190

14.1

(940)

(340)

(1,010)

(1,000)

(400)

(68)

(86.5)

(0.40)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Cooling:

Rating conditions (*) : Indoor air temperature 80

°

F DB / 67

°

F WB, Outdoor air temperature 95

°

F DB / 75

°

F WB

Full load conditions (**) : Indoor air temperature 80

°

F DB / 67

°

F WB, Outdoor air temperature 115

°

F DB

SM830092

– 6 –

2. SPECIFICATIONS

(2) Major Component Specifications

(A) Indoor Unit

MODEL No.

Source

Remote controller (Accessory)

Controller P. C. B Ass'y

Fan

Control circuit fuse

Type

Number ... Dia. and length

Fan motor

Model

Source

No. of pole … r.p.m. (230 V, High)

Nominal output

Coil resistance

(Ambient temperature 68

°

F) in.

(mm) rpm

W

Safety device

Operating temperature

Run capacitor

Heat exchanger

Coil

Rows … Fins per inch

Face area

Flap Motor

Type

Model ... Q’ty

Step angle

Rating

Coil resistance (Ambient temperature 77

°

F)

Open

°

F

Close

°

F

VAC,

µ

F ft.

2 (m 2

V

)

KS2462R

230 - 208 V / 1 phase / 60 Hz

RCS - 1PS4U - G

CR - KS2462R

250 V, 3 A

Cross-flow

1 ... O.D. 4 (100), L33-3/8 (847)

KFG4X - 31B6P-S

230 - 208 V / 1 phase / 60 Hz

4 … 1,365

30

BRW - WHT : 161.2

, ORG - YEL : 26.9

WHT - VLT : 11.6

, YEL - BLK : 22.8

VLT - ORG : 68.7

, BLK - PNK : 115.2

Internal

266

±

9

181

±

27

440 V , 1.5

µ

F

Aluminum plate fin / Copper tube

2 … 19.5

2.30 (0.214)

Stepping motor

MP24GA2 ... 2

5.625 deg / step

DC 12 V

400

±

7 %

DATA SUBJECT TO CHANGE WITHOUT NOTICE

SM830092

– 7 –

2. SPECIFICATIONS

(2) Major Component Specifications

(B) Outdoor Unit

MODEL No.

Source

Compressor

Model

Source

Nominal output

Compressor oil

Coil resistance (Ambient temperature 77

°

F)

Safety device

Overload relay models

Operating temperature

Operating ampere (at 77

°

F)

Run capacitor

Refrigerant amount charged at shipment

High pressure switch

Set pressure

Open

°

F

Close

°

F

A

VAC,

µ

F lbs.

(kg)

OFF MPa

ON MPa

W cc

Fan

Number...diameter

Fan speeds

Fan motor

Model

Source

No. of pole … rpm (230 V, High)

Nominal output

Coil resistance

(Ambient temperature 68

°

F)

Safety device

Operating temperature in.

(mm) rpm

W

Open

°

F

Close

°

F

VAC,

µ

F Run capacitor

Heat exchanger

Coil

Rows … Fins per inch

Face area ft.

2 (m 2 )

C2462R

230 - 208 V / 1 phase / 60 Hz

Scroll (Hermetic)

ZP23K3E

230 - 208 V / 1 phase / 60 Hz

2,400

1,120

C - R : 2.28 , C - S : 1.01

Internal type

284

±

9

156 189

400 V, 40

µ

F

R410A : 6.6 (3)

ACB - 1UB24W

4.15

+ 0

– 0.15

3.15

±

0.3

Propeller

1 … 18-3/32 (460)

2 (AUTO)

KFC6T - 91D6P

230 - 208 V / 1 phase / 60 Hz

6 … 879

110

BRW – WHT : 67.14

, VLT – YEL : 11.42

WHT – VLT : 64.85

, YEL – PNK : 10.60

Internal

248

±

9

171

±

27

440 V, 4

µ

F

Aluminum plate fin / Copper tube

2 … 14.1

8.72 (0.81)

DATA SUBJECT TO CHANGE WITHOUT NOTICE

SM830092

– 8 –

2. SPECIFICATIONS

(2) Major Component Specifications

(B) Outdoor Unit

MODEL No.

Source

Controller P.C.B. Ass'y

Control circuit fuse

Compressor

Model

Source

Nominal output

Compressor oil

Coil resistance (Ambient temperature 77

°

F)

Safety device

Overload relay models

Operating temperature

Operating ampere (at 77

°

F)

Run capacitor

Crank case heater

Refrigerant amount charged at shipment

High pressure switch

Set pressure

Open

°

F

Close

°

F

A

VAC,

µ

F

V, W lbs.

(kg)

OFF MPa

ON MPa

W cc

Fan

Number...diameter

Fan speeds

Fan motor

Model

Source

No. of pole ..... rpm (230 V, High)

Nominal output

Coil resistance

(Ambient temperature 68

°

F)

Safety device

Operating temperature in.

(mm)

W

Open

°

F

Close

°

F

VAC,

µ

F Run capacitor

Heat exchange

Coil

Rows ..... Fins per inch

Face area ft.

2 (m 2 )

CL2462R

230 - 208 V / 1 phase / 60 Hz

CR - CL2432 (Microprocessor)

250 V, 3 A

Scroll (Hermetic)

ZP23K3E

230 - 208 V / 1 phase / 60 Hz

2,400

1,120

C – R : 0.885 , C – S : 1.773

Internal type

284

±

9

156 189

400 V, 40

µ

F

230 V, 30 W

R410A : 6.6 (3)

ACB - 1UB24W

4.15

+ 0

– 0.15

3.15

±

0.3

Propeller

1 ... 18 - 3/32 (460)

3 (AUTO)

KFC6T - 91D6P

230 - 208 V / 1 phase / 60 Hz

6 ... 879

110

BRN – WHT : 67.14 , VLT – YEL : 11.42

WHT – VLT : 64.85 , YEL – PNK : 10.60

Internal

248

±

9

171

±

27

440 V, 4

µ

F

Aluminum plate fin / Copper tube

2 ... 14.1

8.72 (0.81)

DATA SUBJECT TO CHANGE WITHOUT NOTICE

SM830092

– 9 –

2. SPECIFICATIONS

(3) Other Component Specifications

(A) Indoor Unit

MODEL No.

Power Transformer

Rated Primary

Secondary

Capacity

Coil resistance

(Ambient temprature 77

°

F)

Thermistor cut off temperature

Thermistor (Coil sensor)

Coil resistance

Thermistor (Room sensor)

Coil resistance

Lamp Ass'y

Flap Motor k k

KS2462R

ATR – T5

AC 230 V, 60 Hz

AC19 V, 0.5 A

9.5 VA

Primary (WHT - WHT) : 457.5

Secondary (BRN - BRN) : 3.9

277

°

F

DTN - TKS131B

32

°

F : 15.0

±

2 %

DTN - TKS128B

77

°

F : 5.0

±

3 %

IND - K301AH

MP24GA2

– 10 –

SM830092

2. SPECIFICATIONS

(3) Other Component Specifications

(A) Outdoor Unit

MODEL No.

Compressor Motor Magnetic Contactor

Coil rated

Coil resistance (at 68

°

F)

Contact rated (Main)

Contact rated (Auxiliary)

Power Relay

Coil rated

Coil resistance (at 68

°

F)

Contact rated

Thermostat (Coil sensor)

Operating Temperature k

°

F

Contact rated

C2462R

FC - 1SUL

AC 240 V, 60 Hz

587

±

5 %

AC 240 V, 26 A

AC 240 V, 3 A

HH62S

AC 240 V, 60 Hz

17.2

AC 220 V, 5 A

YTB - 4U305F

79

±

3 OFF

200 to 240 V, 1 A

– 11 –

SM830092

2. SPECIFICATIONS

(3) Other Component Specifications

(B) Outdoor Unit

MODEL No.

Compressor Motor Magnetic Contactor

Coil rated

Coil resistance (at 77

°

F)

Contact rated (Main)

Contact rated (Auxiliary)

Power Relay

Coil rated

Coil resistance (at 77

°

F)

Contact rated k

Power Transformer

Rated

Primary

Secondary

Capacity

Coil resistance (at 78

°

F )

Thermal cut off temperature

°

F

Thermistor (Outdoor Temp. sensor)

Coil resistance k

CL2462R

FC - 1SUL

AC 240 V, 60 Hz

587

±

5 %

AC 240 V, 26 A

AC 240 V, 3 A

HH62S

AC 240 V, 60 Hz

17.2

AC 220 V, 5 A

ATR - I35B

AC 220 V, 60 Hz

14 V, 0.2 A

WHT – WHT : 482.5

2.8 VAC

, BRN – BRN : 3.95

14

23

32

41

°

°

°

°

F : 23.7

F : 18.8

F : 15.0

F : 12.1

266

PBC - 41E - S4

,

,

,

, 50

68

86

104

°

°

°

°

F : 9.7

F : 6.5

F : 4.4

F : 3.1

113

°

F : 2.6

Solenoid control valve or coil

Solenoid control valve

Solenoid coil

VPV - 202DQ50

VPV - MOAQ517B1

– 12 –

SM830092

3. DIMENSIONAL DATA

(1) Indoor Unit: KS2462R

44-7/8

8-31/32

Remote control unit

6-27/32

Center of tubing hole (2 places)

5-5/16

Wide tube 3/4"(ø19.05)

Narrow tube 3/8"(ø9.52)

Drain hose O.D. 23/32"(ø18)

2-13/32 25/32

Dimension : inch

2199_M_S

SM830092

– 13 –

3. DIMENSIONAL DATA

(2) Outdoor Unit: C2462R, CL2462R

6-23/32

1/2

25-31/32

1/2

4-3/8

1/2

37

1/2

5 4

– 14 –

5

4

Dimension : inch

Hole for anchor bolt (4-R1/4)

Refrigerant tube joint (narrow tube)

Flare connection 3/8 in (9.52 mm)

Refrigerant tube joint (wide tube)

Flare connection 3/4 in (19.05 mm)

Refrigerant tubing inlet

Power supply inlet

SM830092

4. COOLING CAPACITY

1 Indoor Unit: KS2462R

• 230V / 1 phase / 60Hz

RATING CAPACITY :

EVAPORATOR

ENT. TEMP.

°

F (

°

C)

WB DB

Outdoor Unit: C2462R

27,000 BTU / h

59

(15.0)

63

(17.2)

67

(19.4)

71

(21.7)

75

(23.9)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

75

(23.9)

21,290

22,990

29,460

1.69

13,770

15,470

17,240

18,940

20,630

31,020

1.7

11,500

13,190

27,350

1.66

18,460

20,150

21,930

23,620

25,320

28,380

1.67

16,130

17,820

19,590

14,960

16,660

18,360

31,640

1.74

10,560

12,330

14,020

15,720

AIR FLOW RATE :

CONDENSER

AMBIENT TEMP.

°

F (

°

C)

85

(29.4)

95

(35.0)

20,570

22,260

28,300

1.85

13,170

14,870

16,640

18,330

20,030

29,940

1.87

10,990

12,680

26,030

1.81

17,640

19,340

21,110

22,810

24,500

27,110

1.83

15,400

17,100

18,870

14,450

16,150

17,850

30,620

1.9

10,120

11,900

13,590

15,290

19,370

28,780

2.05

10,450

12,140

13,920

15,610

17,310

29,540

2.08

9,680

11,450

13,150

14,840

24,520

1.97

16,740

18,430

20,210

21,900

23,600

25,760

2

14,660

16,360

18,130

19,820

21,520

# 27,000

2.02

12,510

14,210

15,980

17,680

TC : Total Cooling Capacity (BTU / h)

SHC : Sensible Heat Capacity (BTU / h)

CI : Compressor Input (kW)

Rating conditions are

: Outdoor Ambient Temp. 95

°

F DB

: Indoor Unit Entering Air Temp. 80

°

F DB / 67

°

F WB

559 Cu.ft / min

105

(40.6)

2.29

11,810

13,510

15,280

16,970

18,670

27,510

2.32

9,870

11,570

13,340

15,040

22,820

2.23

15,760

17,450

19,220

20,920

22,620

24,220

2.26

13,840

15,530

17,310

19,000

20,700

25,570

16,730

28,300

2.35

9,170

10,950

12,640

14,340

115

(46.1)

10,950

12,730

14,420

16,120

26,970

2.63

8,650

10,420

12,110

13,810

2.55

11,060

12,760

14,530

16,230

17,920

26,110

2.59

9,260

20,930

2.49

14,710

16,400

18,170

19,870

20,930

22,550

2.52

12,970

14,670

16,440

18,140

19,830

24,000

SM830092

– 15 –

4. COOLING CAPACITY

1 Indoor Unit: KS2462R

• 208V / 1 phase / 60Hz

RATING CAPACITY :

EVAPORATOR

ENT. TEMP.

°

F (

°

C)

WB DB

Outdoor Unit: C2462R

26,000 BTU / h

59

(15.0)

63

(17.2)

67

(19.4)

71

(21.7)

75

(23.9)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

72(22.2)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

76(24.4)

80(26.7)

84(28.9)

88(31.1)

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

SHC

SHC

TC

CI

SHC

SHC

SHC

SHC

75

(23.9)

20,410

22,010

28,370

1.67

13,310

14,910

16,580

18,180

19,770

29,870

1.69

11,150

12,750

26,340

1.64

17,760

19,360

21,030

22,630

24,230

27,330

1.66

15,540

17,140

18,810

14,420

16,020

17,620

30,470

1.72

10,240

11,910

13,510

15,110

AIR FLOW RATE :

CONDENSER

AMBIENT TEMP.

°

F (

°

C)

85

(29.4)

95

(35.0)

19,700

21,300

27,250

1.83

12,720

14,320

15,990

17,590

19,190

28,830

1.85

10,650

12,250

25,060

1.79

16,960

18,560

20,230

21,830

23,430

26,100

1.82

14,840

16,430

18,110

13,920

15,520

17,120

29,480

1.88

9,810

11,480

13,080

14,680

18,550

27,720

2.03

10,130

11,730

13,400

15,000

16,600

28,440

2.06

9,380

11,050

12,650

14,250

23,610

1.95

16,080

17,680

19,350

20,950

22,550

24,800

1.98

14,110

15,710

17,380

18,980

20,580

# 26,000

2

12,080

13,680

15,350

16,950

TC : Total Cooling Capacity (BTU / h)

SHC : Sensible Heat Capacity (BTU / h)

CI : Compressor Input (kW)

Rating conditions are

: Outdoor Ambient Temp. 95

°

F DB

: Indoor Unit Entering Air Temp. 80

°

F DB / 67

°

F WB

519 Cu.ft / min

105

(40.6)

2.29

11,390

12,990

14,660

16,260

17,860

26,490

2.32

9,570

11,170

12,840

14,440

21,970

2.23

15,120

16,720

18,390

19,990

21,590

23,320

2.27

13,310

14,910

16,580

18,180

19,780

24,620

16,040

27,250

2.36

8,890

10,560

12,160

13,760

115

(46.1)

10,570

12,240

13,840

15,440

25,970

2.66

8,380

10,050

11,650

13,250

2.58

10,670

12,260

13,940

15,540

17,130

25,140

2.62

8,970

20,150

2.52

14,100

15,700

17,370

18,970

20,150

21,710

2.55

12,470

14,070

15,740

17,340

18,940

23,110

SM830092

– 16 –

5. PERFORMANCE CHARTS

(1) Operating Current

1 Indoor Unit: KS2462R Outdoor Unit: C2462R

Operating current characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

230V

Outdoor fan speed

Low High

14

13

12

11

10

9

8

7

59

(15)

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

68

(20)

77

(25)

86

(30)

Outdoor ambient temp.

°

F (

°

C)

95

(35)

104

(40)

1061_X_S

208V

14

13

12

11

10

9

8

7

59

(15)

Outdoor fan speed

Low High

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

68

(20)

77

(25)

86

(30)

Outdoor ambient temp.

°

F (

°

C)

95

(35)

104

(40)

1062_X_S

SM830092

– 17 –

5. PERFORMANCE CHARTS

(1) Operating Current

2 Indoor Unit: KS2462R Outdoor Unit: CL2462R

Operating current characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

230V

14

13

12

11

10

9

8

7

23

(–5)

32

(0)

Low

Outdoor fan speed

Med High

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

41

(5)

50

(10)

59

(15)

68

(20)

Outdoor ambient temp.

°

F (

°

C)

77

(25)

86

(30)

95

(35)

104

(40)

1063_X_S

208V

14

13

12

11

10

9

8

7

23

(–5)

32

(0)

Low

Outdoor fan speed

Med High

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

41

(5)

50

(10)

59

(15)

68

(20)

Outdoor ambient temp.

°

F (

°

C)

77

(25)

86

(30)

95

(35)

104

(40)

1064_X_S

SM830092

– 18 –

5. PERFORMANCE CHARTS

(2) High and Low Pressure

1 Indoor Unit: KS2462R

• High Pressure

Outdoor Unit: C2462R

High pressure characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

230V / 208 V

Outdoor fan speed

Low High

480

460

440

420

400

380

360

340

320

300

59

(15)

68

(20)

77

(25)

86

(30)

Outdoor ambient temp.

°

F (

°

C)

95

(35)

104

(40)

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

1065_X_S

• Low Pressure

Low pressure characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

230V / 208 V

170

160

150

140

130

120

110

59

(15)

Outdoor fan speed

Low High

68

(20)

77

(25)

86

(30)

Outdoor ambient temp.

°

F (

°

C)

95

(35)

104

(40)

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

1066_X_S

SM830092

– 19 –

5. PERFORMANCE CHARTS

(2) High and Low Pressure

2 Indoor Unit: KS2462R

• High Pressure

Outdoor Unit: CL2462R

High pressure characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

230 / 208V

Low

Outdoor fan speed

Med High

500

480

460

420

400

380

360

340

320

300

23

(–5)

32

(0)

41

(5)

50

(10)

59

(15)

68

(20)

Outdoor ambient temp.

°

F (

°

C)

77

(25)

86

(30)

95

(35)

104

(40)

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

1067_X_S

• Low Pressure

Low pressure characteristics versus outdoor ambient temperature and indoor temperature.

(Indoor relative humidity: 50%, Indoor fan speed: High)

Low

Outdoor fan speed

Med High

230 / 208V

170

160

150

140

130

120

110

23

(–5)

32

(0)

41

(5)

50

(10)

59

(15)

68

(20)

Outdoor ambient temp.

°

F (

°

C)

77

(25)

86

(30)

95

(35)

104

(40)

Indoor temp.

°

F (

°

C)

85 (30)

80 (27)

75 (24)

70 (21)

1068_X_S

SM830092

– 20 –

6. AIR THROW DISTANCE CHART

Indoor Unit: KS2462R

Room air temp. : 80

°

F (26.7

°

C)

Fan speed : High

0 5 10

Horizontal distance (ft.)

15 20 25 30

5

10

15

: Flap angle 0

°

,

: Flap angle 30

°

,

: Axis air velocity 0

°

: Axis air velocity 30

°

2200_M_S

– 21 –

SM830092

7. REFRIGERANT FLOW DIAGRAM

Indoor Unit: KS2462R Outdoor Unit: C2462R

Indoor Unit

O. D.

3/4"

(19.05mm)

Wide tube

O. D.

3/4"

(19.05mm)

Outdoor Unit

Wide tube service valve

Accumulator

LP

High pressure switch

HP

Narrow tube service valve

Capillary tube Strainer

Narrow tube

O. D.

3/8"

(9.52 mm)

O. D.

3/8"

(9.52 mm)

Indoor Unit: KS2462R Outdoor Unit: CL2462R

Sub-condenser

2201_M_S

Indoor Unit

O. D.

3/4"

(19.05mm)

Wide tube

O. D.

3/4"

(19.05mm)

Outdoor Unit

Wide tube service valve

Accumulator

Capillary

LP

S

High pressure switch

HP

HGBV

Narrow tube

O. D.

3/8"

(9.52 mm)

O. D.

3/8"

(9.52 mm)

Narrow tube service valve

Capillary tube Strainer

Sub-condenser

2202_M_S

SM830092

– 22 –

8. INSTALLATION INSTRUCTIONS

1) Tubing Length

• Refrigerant tubing between the indoor and outdoor units should be kept as short as possible.

• Select and decide the installation location so that the length of the refrigerant tubing will be within the limits given in Table 1.

INDOOR

UNIT

Elevation difference (H)

Tubing length (L)

OUTDOOR

UNIT

0711_M_I

Fig. 1

Table 3

Model

Max. Allowable Tubing

Length at Shipment

(ft.)

23

Limit of Tubing

Length (L)

(ft.)

132

Limit of Elevation

Difference (H)

(ft.)

50 C2462R, CL2462R

* If total tubing length becomes 23 to 132 ft. (max.), additional refrigerant (R410A) charge of 0.43 oz./ft. is required.

No additional charge of compressor oil is necessary.

Required Amount of

Additional Refrigerant

(oz./ft.)*

0.43

– 23 –

SM830092

8. INSTALLATION INSTRUCTIONS

2) Selecting the Installation Site

Indoor Unit

AVOID: areas where leakage of flammable gas may be expected.

places where large amounts of oil mist exist. (Fig. 2) direct sunlight.

locations near heat sources which may affect performance of the unit.

locations where external air may enter the room directly. This may cause “sweating” on the air discharge ports, causing them to spray or drip. (Fig. 3) locations where the remote control unit will be splashed with water or affected by dampness or humidity.

Indoor unit

Outside drainage

Drain hose

2203_M_S

Fig. 2

DO: select an appropriate position from which every corner of the room can be uniformly air-conditioned.

select a location that will hold weight of the unit.

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

(Fig. 2) allow room for operation and maintenance as well as unrestricted air flow around the unit. (Fig. 3a and 3b)

Install the unit within the maximum elevation difference above or below the outdoor unit and within a total tubing length from the outdoor unit as detailed in Table 1

6 inches min.

CAUTION

INDOOR UNIT

Front View

Fig. 3a

For stable operation of the air conditioner, do not install wall-mounted type indoor units less than 5 ft. from floor

6 inches min.

6 inches min.

Indoor Unit

Minimum height from floor level

5 ft.

2204_M_S and Fig. 1 on the previous page.

level.

Wall

Floor level

2205_M_S

Fig. 3b

SM830092

– 24 –

8. INSTALLATION INSTRUCTIONS

Outdoor Unit

AVOID: heat sources, exhaust fans, etc. Fig. 4 damp, humid or uneven locations.

DO: choose a place as cool as possible.

choose a place that is well ventilated and outside air temperature does not exceed maximum 115

°

F constantly.

allow enough room around unit for air intake/ exhaust and possible maintenance. Fig. 5 provide a solid base; about 6 inch above grond level to reduce humidity and possible water damage in the unit and decrease service life. Fig. 6 use lug bolts or equivalent to bolt down unit, reducing vibration and noise.

Min.

1 inch

CAUTION

If more than 2 outdoor units are installed in the same location, keep at least 3 meters away from the neighboring unit to avoid influence of air discharge.

Air discharge chamber for top discharge

Install the air-discharge chamber in the filed when: it is difficult to keep a space of minimum 2 ft.

between the air-discharge outlet and the obstacle.

the air-discharge outlet is facing the sidewalk and discharged hot air can annoy the passers-by.

Refer to Fig. 6 and Fig. 7.

Hot air

4 in.

Air in

Outdoor unit

Min. 2 ft.

Exhaust fan

Min.

1 inch

Air discharge

Concrete block

4 inch 1 ft. 4 inch beams or equal

Anchor bolts

(4 pieces)

Heat source

Fig. 4

0591_C_I

Obstacle above

Air discharge

Min.

7 ft.

0931_C_I

Ground

0932_C_I

Fig. 5

Air in

Min. 6 inch

0934_C_I

Fig. 6

Air discharge

0426_C_I

Fig. 7

SM830092

– 25 –

8. INSTALLATION INSTRUCTIONS

Wind Shield for "CL" Model

IMPORTANT

It is recommended to use wind shields for "CL" model

(Fig. 5b). "CL" model is designed to use in low outdoor temperature conditions.

General

When the outdoor unit is installed in a position exposed to strong wind (like seasonal winds with low air temperature in winter), a suitable wind shield must be installed on the outdoor unit.

This unit is designed so that the fan of the outdoor unit runs at low speed when the air conditioner is operated at low outdoor air temperatures. When the outdoor unit is exposed to strong wind, the system pressure drops because of the freeze protector.

For outer dimensions of the wind shield, see Fig. 5c.

Wind shield

(air discharge side)

Front

Fig. 5b

Recommended outer dimensions of wind shield

(field supply)

3 -

ø1-9/16"

hole

21-13/16"

6 -

ø15/64" hole

1-1/16" 9-27/32" 9-27/32"

21-13/16"

CL2462R

Fig. 5c

5-5/32"

SM830092

– 26 –

8. INSTALLATION INSTRUCTIONS

3) Electrical Wiring

General Precautions on Wiring

(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2) Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.

(3) To prevent possible hazards from insulation failure, the unit must be grounded.

(4) Each wiring connection must be done in accordance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged.

(5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan.

(6) Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no repsonsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

(7) Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL ELECTRICAL

CODES before beginning. You must ensure that installation complies with all relevant rules and regulations.

– 27 –

SM830092

8. INSTALLATION INSTRUCTIONS

7-2. Recommended Wire Length and Wire Diameter for Power Supply System

Models

C2462R, CL2462R

(A) *1 Power Supply (B) *1 Inter-unit

Wiring

AGW #14

64 ft. (AWG #12) 132 ft.

Time Delay

Fuse or

Circuit

Capacity

35 A

*1 Refer to the Wiring System Diagrams (See below diagram) for the meaning of “A” and “B.”

AWG = American Wire Gauge

NOTE

To access the electrical component box, open the air intake grille and remove the electrical component box cover.

7-3. Wiring System Diagram

Outdoor Unit: “C”, “CL” models

Single-phase

60 Hz, 208/230 V

Indoor Unit

Disconnect SW

(Field supply)

Outdoor Unit

(B)

1

2

1

2

G

4

Ground

G

4

L1

(A)

L2

G

Ground

– 28 –

SM830092

9. ELECTRICAL DATA

Electrical characteristics

Indoor model: KS2462R / Outdoor model: C2462R, CL2462R

Performance at

Indoor Unit

Fan Motor Fan Motor

Outdoor Unit

Compressor

230 - 208 V / 1 phase / 60 Hz

Rating conditions

A kW

A

0.38 - 0.37

0.08 - 0.07

0.38 - 0.37

0.90 - 0.90

0.18 - 0.17

0.90 - 0.90

8.8 - 9.6

2.02 - 2.00

11.1 - 12.4

Full load conditions kW

A

0.08 - 0.07

1 - 1

0.18 - 0.17

1 - 1

2.55 - 2.58

61 - 55 Starting amperes

Rating Conditions : Indoor Air Temperature 80

°

F DB / 67

°

F WB

Outdoor Air Temperature 95

°

F DB

Full Load Conditions : Indoor Air Temperature 80

°

F DB / 67

°

F WB

Outdoor Air Temperature 115

°

F DB

Complete Unit

10.1 - 10.9

2.25 - 2.24

12.4 - 13.7

2.81 - 2.32

63 - 57

– 29 –

SM830092

10. ELECTRICAL WIRING DIAGRAMS

(1) Indoor Unit

1 KS2462R

FAN MOTOR

FMI

• Electric Wiring Diagram

GRN / YEL

G

G

WHT

TERMINAL

PLATE

BLK

1

2

GRN

RED

G

4

G

GRN

8 7 6 5 4 3 2 1

8 7 6 5 4 3 2 1

CONNECTOR

[WHT]

CAPACITOR

PNK

BRN w

G

GRY

WHT

V LT

ORG w FM w HH w H w M

YEL w L

BLK

CONNECTOR

[WHT]

FLP 3

4

5

1

2

[WHT]

1

2

3

4

5

WHT

[WHT]

1

BLU 2

BLU 3

BLU

BLU

4

5

1

2

3

4

5 w LL

FLAP1

5P [WHT]

1 3 5

1 3 5

SUP

5P [WHT]

PRY

3P [RED]

SEC

2P [WHT]

LAMP

4P [WHT]

1

3

1

3

1

2

1

2

RECEIVER

3P [WHT]

3

2

1

3

2

1

1

2

3

4

1

2

3

4

FLAP MOTOR [UPPER]

CONTROLLER

CONNECTOR

[WHT] [GRN]

1 1

FLP

2

3

4

5

2

3

4

5

WHT

[BLK]

1

BLU

BLU

BLU

BLU

4

5

2

3

1

4

5

2

3

FLAP2

5P [BLK]

ROOM/COIL

4P [WHT] 3

4

1

2

3

4

1

2

* FLAP MOTOR [LOWER]

WHT

WHT

BRN

BRN

WHT

GRY

GRY

WHT

GRY

GRY

GRY

P

S

3

4

1

2

5

6

7

3

4

1

2

5

6

7

COIL THERMISTOR (TH1)

BLK

BLK

BLK

BLK

ROOM THERMISTOR (TH2)

8512-5253-714XX-1 (KS2432A)

– 30 –

SM830092

10. ELECTRICAL WIRING DIAGRAMS

Outdoor Unit

C2462R

• Electric Wiring Diagram

7

2Y

8

5 6

1 3 2 4

TERMINAL PLATE (6P)

1

2

G

4

L1

L1

L2

L2

G

RED

WHT

WHT

RED

WHT

BLK

RED

2P (WHT)

1

2

1

2

P S

P S

1

2

1

2

2P (GRN)

BLK

BLK

RED

RED

63PH

63PL

EARTH

TERMINAL

EARTH

TERMINAL

C

23S

L

BLK

H

A

52C

B

R S T 13 31

U V W 14 32 7

1Y

8

5 6

1 3 2 4

RED

BRN

BRN

RC2

RC1

P

1

1

S

2 3

2 3

4

4

5

5

6

6

7

7

8

8

8P

(WHT)

C

R

S

CM

FMO

49FO

854-2-5269-160-00-0

SM830092

– 31 –

10. ELECTRICAL WIRING DIAGRAMS

Outdoor Unit

C2462R

TERMINAL

PLATE (6P)

– 1

– 2

– G

– 4

– L1

– L2

2Y

• Schematic Diagram

2Y

52C 2Y

1 2

63PH 63PL

2 1 52C

49FO

1

2

1Y

H

5 6

M

FMO

2 1

RC2

C

R S

CM

RC1

L

C

23S

H

1Y

52C

Symbols

CM

FMO

52C

49FO

63PH

63PL

23S

RC1, 2

1Y, 2Y

Description

Compressor Motor

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Low Pressure Switch

Fan Speed Control Thermostat

Running Capacitor

Auxiliary Relay

Terminal Base

Connector

854-2-5269-160-00-0

– 32 –

SM830092

10. ELECTRICAL WIRING DIAGRAMS

Outdoor Unit

CL2462R

BRN

BRN

BLK

BLK

WHT

WHT

RED

RED

BRN

GRY

BRN

PNK

WHT

BLK

YEL

VLT

GRY

GRY

WHT

YEL

VLT

BRN

PNK

BRN

BRN

BLK

WHT

RED

BLK

WHT

BLK

RED

RED

BLK

BLK

WHT

WHT

TO INDOOR UNIT 60Hz 1ø 208V/230V

POWER SUPPLY

– 33 –

SM830092

10. ELECTRICAL WIRING DIAGRAMS

Outdoor Unit

CL2462R

TERMINAL

PLATE (6P)

-1

-2

-G

1Y

-4

-L1

-L2

52C

1

F1 (3A)

• Schematic Diagram

RC1

1 3

RY1

3

52C

52C

1Y

1 1 2

CH 63PL

63PH

2 2 1

49FO

4

52C

RY2

H

5

M

7

L

9

RY3

1

5 6 7

FMO

HGBV

1Y

RC2

1 2

CR-CL2462R

CONTROLLER

TEMP

TH

1

2

OUTDOOR

TEMPERATURE

RY1 L

RY2 M

RY3 HGBV

PRY

1

3

TR

AC 208V

230V

DC12V SEC

1

2

AC 14V

C

R

S

CM

3

F2 (3A)

3

COM

1

COM

3

854-2-5269-159-00-0

Symbols

CM

CH

FMO

52C

49FO

63PH

63PL

HGBV

TR

TH

RC1, 2

RY1~3, 1Y

CR-CL2432

F1, 2

Description

Compressor Motor

Crankcase Heater

Outdoor Fan Motor

Compressor Motor Magnetic Contactor

Outdoor Fan Motor Thermal Protector

High Pressure Switch

Low Pressure Switch

Hot Gas Bypass Valve

Power Transformer

Thermistor (Outdoor Temperature)

Running Capacitor

Auxiliary Relay

Outdoor Controller

Fuse

Terminal Base

Connector

Terminal

SM830092

– 34 –

11. PROCESSES AND FUNCTIONS

(1) Room Temperature Control

The Unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF.

This process is controlled by the thermostat located in the indoor unit.

The figures shows how each part of the system performs when the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo

OFF). Fig. 1 shows about the cooling cycle.

Signal from remote control unit set temp.

T + 2

°

F

T

°

F

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

Thermo.

OFF

Thermo.

ON

Thermo.

OFF

Thermo.

ON

Thermo.

ON

Thermo.

ON

More than

5 minutes

5 minutes 3 minutes

Compressor ON OFF ON OFF

Room temp.

ON

Thermo.

OFF

OFF

Outdoor fan ON OFF ON OFF ON OFF

Indoor fan Set speed

Fig. 11

Chart Summary and Explanations

Once the compressor starts, it keeps running for 5 minutes.

Once the compressor stops, it will not start running again for 3 minutes.

If you change the operation mode during the cooling cycle, the control circuit stops the compressor for 3 minutes.

For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off, the compressor is not controlled by the room sensor.

Thermo ON: When room temperature rises 1

°

F above the set temperature T˚, (T ˚+1

°

F):

Compressor ON

Thermo OFF: When the room temperature is equal to or below the set temperature T˚:

Compressor OFF

2212_M_S

SM830092

– 35 –

11. PROCESSES AND FUNCTIONS

(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.

Room temp.

Cooling operation

T + 4

°

F

Set temp. T

°

F

T – 2

°

F

Dry A zone

Compressor : Continuous operation

FMI (indoor fan) : L (low speed) / LL (very low speed) intermittent ventilation only while the compressor is ON.

Dry B zone

Compressor : Intermittent operation (ON for 3 minutes and OFF for 9 minutes)

FMI (indoor fan) : L (low speed) / LL (very low speed) intermittent ventilation only while the compressor is ON.

Room temp. 59

°

F

Monitor zone

Both the indoor and outdoor units stop.

2213_M_S

Fig. 12

NOTE

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

Dry operation does not occur when the room temperature is under 59

°

F, which is the monitor zone.

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

– 36 –

SM830092

11. PROCESSES AND FUNCTIONS

(3) Freeze Prevention

Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor unit’s fan.

Room temp.

Thermo. OFF

Thermo. ON

T + 4

°

F

Set temp. T

°

F

Indoor heat exch. coil temp.

30

°

F

6 minutes

More than

6 minutes

Compressor

More than

10 minutes

ON OFF ON

More than

10 minutes

ON OFF ON

Indoor fan Set speed Set speed

Fig. 13

2214_M_S

Chart Summary and Explanations

When the compressor has been running for 6 minutes or more and the temperature of the indoor heat exchange coil falls below 30

°

F, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until the temperature rises above

46

°

F or 6 minutes has elapsed.

– 37 –

SM830092

11. PROCESSES AND FUNCTIONS

(4) Outdoor Fan Speed Control

(1) C2462R Type

• In low outdoor temperature, the outdoor fan is set automatically from HIGH to LOW to prevent the indoor heat exchanger from freezing.

• When the outdoor temperature falls below 78

°

F, the outdoor fan is set from HIGH to

LOW automatically. When the outdoor temperature rises to 82

°

F, the outdoor fan is set from LOW to HIGH automatically.

(2) CL2462R Type

• In low outdoor temperature, the outdoor fan is set automatically from HIGH to MED,

LOW to prevent the indoor heat exchanger from freezing.

• When the outdoor temperature falls below 77

°

F, the outdoor fan is set from HIGH to

MED automatically. When the outdoor temperature rises to 81

°

F, the outdoor fan is set from MED to HIGH automatically.

• When the outdoor temperature falls below 59

°

F, the outdoor fan is set from MED to

LOW automatically. When the outdoor temperature rises to 63

°

F, the outdoor fan is set from LOW to MED automatically.

• When the outdoor temperature falls below 50

°

F, the hot gas bypass valve opens and keeps the pressures up by allowing some hot gas to be bypassed to the suction of the compressor.

760

H

380

230

M

L

HGBV

(HOT GAS

BYPASS VALVE)

OFF

ON

47

(8.3)

50

(10)

59

(15)

63

(17)

77

(25)

OUTDOOR AIR TEMPERATURE

°

F DB

81

(27)

2217_X_S

Fig. 14

– 38 –

SM830092

12. SERVICE PROCEDURES

(1) Troubleshooting

1) Check before and after Troubleshooting

Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

1 Check power supply wiring

(a) Single-phase

Check that power supply wires are correctly connected to L1 and L2 on the

6P terminal in the outdoor unit.

2 Check inter-unit wiring

Check that inter-unit wiring (AC 230 - 208 V Line voltage) is correctly connected between the indoor unit and outdoor unit.

Single-phase outdoor unit

Indoor Unit

4P Terminal

G

4

1

2

Inter-Unit Wiring

(Line voltage)

230V/208V

230V/208V

Grounding line

230V/208V

(B)

Disconnect switch

(Field supply)

Outdoor Unit

6P Terminal

1

2

G

4

L1

L2

(A)

G

Power supply

Single phase

230V/208V 60Hz

Grounding line

2206_M_S

Fig. 15

3 Check power supply

Check that voltage is within the specified range (

±

10 % of the rating).

Check that power is being supplied.

If the following troubleshooting must be done with power being supplied, be careful not to touch any uninsulated live part that can cause ELECTRIC

SHOCK.

4 Check the lead wires and connectors in indoor and outdoor units.

Check that the sheath of lead wires is not damaged.

Check that the lead wires are firmly connected at the terminal plate.

Check that the wiring is correct.

5 Reference

• Condition of general cooling operation (Thermo. ON)

SWEEP .................. ON

Indoor fan speed .... HIGH

SM830092

– 39 –

12. SERVICE PROCEDURES

2) Air Conditioner does not Operate

1 Circuit breaker trips (or fuse blows).

(a) When the circuit breaker is set to ON, it is tripped soon.

• There is a possibility of ground fault.

• Check insulation resistance.

If resistance value is 2 M

or less, it is a defect of insulation.

(Example)

Circuit breaker

Power supply cords

1

+

+

L1

L2

G

Outdoor unit

1

2

G

4

2

+

+

4

3

+

+

+

Inter-unit

+ power line

Indoor unit

1

2

G

4

Ground

*Set the circuit breaker to OFF.

1 Remove power supply cords

from the terminal plate in

the outdoor unit.

• Check insulation resistance

of power supply cords.

OK

NO

Execute rewiring.

2

Remove inter-unit power line

from the terminal plate in

the outdoor unit.

• Check insulation resistance

of outdoor unit.

OK

NO Insulation of outdoor unit is defective.

3 Remove inter-unit power line

from the terminal plate in

the indoor unit.

• Check insulation resistance

of indoor unit.

OK

NO

Inter-unit power lines are defective.

Insulation of outdoor unit is defective.

– 40 –

Execute rewiring.

• Check insulation

resistance of

electrical parts

in the outdoor unit.

• Check insulation

resistance of

electrical parts

in the indoor unit.

1032_X_S

SM830092

12. SERVICE PROCEDURES

(b) Circuit breaker trips in several minutes after turning the air conditioner on.

• There is a possibility of short circuit.

• Check capacity of circuit

breaker.

Is capacity of circuit breaker sufficient ?

NO

Replace it with a suitable one.

(= larger capacity)

• Check resistance of

outdoor fan motor winding.

• Check resistance of

compressor motor winding.

• Check resistance of flap

motor winding.

2218_X_S

2 Neither indoor unit nor outdoor unit runs.

A. Power is not supplied

Circuit breaker is tripped.

• Check power supply.

Is power being supplied

to outdoor unit ?

NO

Power failure.

Reset the breaker.

Wait for recovery or consult power supply company.

0615_X_S

B. Check remote control unit.

• Try to run both indoor and

outdoor units with another

remote control unit.

OK

The other remote control

unit is defective.

0616_X_S

SM830092

– 41 –

12. SERVICE PROCEDURES

C. Check “Operation selector” switch in the indoor unit.

• Has “Operation selector”

switch been set to ON

position ?

NO

YES

Set “Operation selector” switch to ON.

But neither unit runs.

Switch Ass’y or P.C.B.

Ass’y in the indoor unit is defective.

IND. LAMP Ass’y or P.C.B.

Ass’y in the indoor unit is defective.

0617_X_S

D.

Check compressor motor protectors.

(a) High pressure switch (63PH)

• Check high pressure switch.

Does high pressure switch

actuate ? (63PH)

YES

• Is outdoor heat exchanger

coil dirty or are there

obstacles near air suction

inlet of outdoor unit ?

NO

YES

• Check if outdoor fan rotates.

Refer to “Only outdoor fan

does not run.”

Disconnect the socket from 2P (WHT) connector.

Check the continuity between No.1 and No.2 poles of the socket.

Clean heat exchanger coil or remove obstacles.

0618_X_S

E.

Transformer in indoor unit.

• Check resistance of

transformer winding. (TR1)

1033_X_S

SM830092

– 42 –

12. SERVICE PROCEDURES

F.

Check. auxiliary relay. (1Y or 2Y)

• Check coil resistance of

auxiliary relay.

(1Y or 2Y)

0620_X_S

G.

Check fuse on the P.C.B. Ass’y in the indoor unit.

• Check fuse on the P.C.B.

Ass'y in the indoor unit

for continuity.

When the fuse blows.

• Check resistance of

primary and secondary

winding of transformer.

OK

• Check resistance of indoor

fan motor winding.

OK

• Check coil of compressor

motor magnetic contactor.

(52C)

OK

• P.C.B. Ass'y is defective.

2219_X_S

– 43 –

SM830092

12. SERVICE PROCEDURES

3) Outdoor Unit does not Run.

A. Check COOL / FAN selector switch in the remote control unit.

• Is MODE selector button

set to COOL ?

NO

Set to COOL.

2220_X_S

B. Check set temperature.

Try to lower set temperature by Temperature setting button “COOLER”.

YES

• Set “Operation selector”

switch to TEST in the

indoor unit.

Outdoor unit runs.

Is room temperature too low ?

NO

• Try to run both indoor and

outdoor units with another

remote control unit.

OK

The other remote control unit is defective.

2221_X_S

SM830092

– 44 –

12. SERVICE PROCEDURES

C. Check compressor motor magnetic contactor.

• Check coil resistance of

compressor motor magnetic

contactor. (52C)

1035_X_S

D. Check indoor unit P.C.B.

• Check P.C.B. Ass’y.

• Check voltage between

terminals No.2 and No.4 at

terminal plate.

No voltage appears.

P.C.B. Ass’y is defective.

0628_X_S

E. Check outdoor unit P.C.B. (CL2462R Type)

• Check P.C.B. Ass’y.

• Check voltage between

terminals L1 and L2 at

terminal plate.

No voltage appears.

P.C.B. Ass’y is defective.

1036_X_S

– 45 –

SM830092

12. SERVICE PROCEDURES

4) Indoor Unit does not Run.

(Indoor fan and flap motor do not run.)

P.C.B. Ass’y is defective.

0630_X_S

5) Some Part does not Operate.

A. Indoor fan does not run.

• Check fan rotation.

Rotate the fan gently once

or twice by hand.

Fan cannot be rotated.

Check fan casing for foreign matter on the inside.

Fan motor burnout or foreign matter in bearing.

• Check resistance of fan

motor winding.

OK

• Check fan motor capacitor.

OK

Relay RY1 or RY2 on the

P.C.B. Ass’y is defective.

Remove foreign matter or repair.

Repair or replace.

0631_X_S

B. Flap motor does not run.

• Check resistance of

flap motor winding.

OK

P.C.B. Ass’y or remote control unit is defective.

2222_X_S

SM830092

– 46 –

12. SERVICE PROCEDURES

6) Outdoor Fan does not Run.

• Check fan rotation.

Rotate the fan gently once

or twice by hand.

Fan cannot be rotated.

• Check fan casing

for foreign matter

on the inside.

• Fan motor burnout

or foreign matter

in bearing.

• Check resistance of fan

motor winding.

OK

• Check fan motor capacitor

Remove foreign matter or repair.

Repair or replace.

• Check continuity between

terminals on the compressor

motor magnetic contactor.

0633_X_S

7) Outdoor Fan Speed is not Switched from High to Low even when the Outdoor

Temperature Falls below 78

°

F. (C2462R Type)

• Check the thermostat (23S).

1037_X_S

8) Outdoor Fan Speed is not Switched from High to Med even when the Outdoor

Temperature Falls below 77

°

F.

Outdoor Fan Speed is not Switched from Med to Low even when the Outdoor

Temperature Falls below 59

°

F. (CL2462R Type)

• Check outdoor unit P.C.B.

Ass’y

OK

• Check resistance of outdoor

temp sensor.

0722 _X_S

SM830092

– 47 –

12. SERVICE PROCEDURES

9) Outdoor Fan does not Run for CL2462R.

• Check fuse on PCB Ass’y in

outdoor unit for continuity.

If fuse blows,

• Check resistance of primary

winding of transformer. (TR)

1038_X_S

10) Compressor does not Run.

• Check compressor motor capacitor

(RC1).

OK

• Check PTC.

OK

• Check resistance of compressor

motor winding.

Wait for 30 minutes until com-

pressor has cooled.

Compressor runs.

Compressor internal thermal

protector is operated.

• Check power supply voltage.

Is voltage abnormally low?

NO

• Is outdoor heat exchanger coil dirty

or are there obstacles near air

suction inlet?

1039_X_S

SM830092

– 48 –

12. SERVICE PROCEDURES

11) Poor Cooling.

Check installation position

of remote control unit.

• Does cool air from air condi-

tioner reach remote control

unit directly ?

YES

Change installation position of remote control unit.

• Is wide tube between indoor unit

and outdoor unit insulated ?

NO

Insulate wide tube and then execute taping with narrow tube.

YES

• Measure temperatures of suction

and discharge air of indoor unit.

Temperature difference is small.

Possibility of refrigerant shortage.

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

Charge refrigerant

• Check clogging of air

filter.

Air filter is clogged.

Clean filter.

• Is fan speed set to LOW ?

YES 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 unit with higher cooling capacity.

1040_X_S

12) Excessive Cooling.

• The set temperature is too low.

YES

• Is the remote control unit installed

at a place where it can

detect the room temperature

properly ?

NO

Set the temperature to higher value using temperature setting button of the remote control unit.

Change installation position of the remote control unit.

0637_X_S

SM830092

– 49 –

12. SERVICE PROCEDURES

(2) A Sensor is Defective.

1 Indoor (heat exchanger) coil temp. Sensor is defective.

(a) Open (=No continuity in sensor)

Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes when sensor opens.

(b) Short

“Freeze Prevention” does not operate when dehumidified water is frozen on the indoor coil.

2 Room temp. Sensor (in the remote control unit) is defective.

(a) Open (=No continuity in sensor)

Neither outdoor fan nor compressor runs.

(b) Short

Outdoor fan and compressor do not stop. — Excessive cooling.

– 50 –

SM830092

12. SERVICE PROCEDURES

(3) Checking the Electrical Components

1) Measurement of Insulation

Resistance

Clip

Earthed wire

• The electrical insulation is acceptable when the resistance exceeds 2 M

.

1 Power Supply Wires

Clamp the earthed wire of the Power

Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig. 16)

Then measure the resistance between the earthed wire and the other power wires. (Fig. 16)

Probe

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 the terminal plate (Fig. 17)

Clip

Copper tube or metallic part

3 Outdoor Unit

Measure the resistance by placing a probe on the terminal plate in the same manner as explained above 2 . (Fig. 17)

Clip

4 Measurement of Insulation Resistance for Electrical parts

• Disconnect the connector of the desired electric part from terminal plate, P.C.B. Ass’y, etc. (Fig. 18)

• Similarly, disconnect the lead wires from compressor, capacitor, etc. (Fig. 19)

• Measure the resistance in the same manner as illustrated on the right.

Refer to Electrical Wiring Diagram.

Copper tube or metallic part

Metallic part

Clip

NOTE

If the probe does not enter the hole because the hole is too narrow, use a probe with a thinner pin.

– 51 –

Insulation tester

0638_X_S

Terminal plate

Probe

Probe

Insulation tester

0639_X_S

Probe

Insulation tester

0640_X_S

From fan motor, compressor and other parts.

Insulation tester

0641_X_S

Fig. 16

Fig. 17

Fig. 18

Fig. 19

SM830092

12. SERVICE PROCEDURES

2) Checking the Protective Devices

• Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device.

• Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 20.

• The Protective Device is proved normal if there is a continuity between terminals.

socket

Multimeter

0642_X_S

Fig. 20

1 Indoor fan motor thermal protector (49FI) . . . . . . Indoor unit

• Disconnect the connector which leads to the indoor fan motor (FMI).

• Check the socket’s terminals.

2 Compressor motor thermal protector . . . . . . Outdoor unit

• Disconnect the wires from terminals of compressor.

• Check the terminals of compressor.

3 Outdoor fan motor thermal protector (49FO) . . . . . . Outdoor unit

• Disconnect both the connector which leads to the outdoor fan motor (FMO).

• Check socket’s terminal.

– 52 –

SM830092

12. SERVICE PROCEDURES

3) Checking the Electrical Parts

1 Power transformer ...........................Indoor unit *Measure the coil resistance.

• Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of socket connected to power transformer.

• Secondary 19 V ; Measure the resistance between two BRN lead wires.

2 Power transformer (TR) ................. Outdoor unit *Measure the coil resistance.

• Primary 230-208 V ; Measure the resistance between two WHT lead wire terminals of socket jointed to power transformer.

• Secondary 19 V ; Measure the resistance between two BRN lead wires.

3 Indoor fan motor (FMI) ............... Indoor unit *Measure the coil resistance.

• Measure the resistance between each terminal of the socket connected to the indoor fan motor.

4 Outdoor fan motor (FMO) ........... Outdoor unit *Measure the coil resistance.

• Measure the resistance in the same manner as explained above 2 .

5 Motor capacitor ............ Both in indoor and outdoor unit

• Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 21. 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.

NOTE

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

Compressor motor capacitor

Fan motor capacitor

Fig. 21

Multimeter

1041_X_S

SM830092

– 53 –

12. SERVICE PROCEDURES

6 Continuity of fuse on P.C.B.

Ass’y

• Check for continuity using a multimeter as shown in Fig. 22.

NOTE

Method Used to Replace Fuse on

PCB Ass’y

1. Remove the PCB Ass’y from the electrical component box.

2. Remove the fuse from PCB Ass’y using pliers while heating the soldered leads on the back side of the

PCB Ass’y with a soldering iron (30W or 60W). (Fig. 23)

3. For replacement, insert a fuse of the same rating to the intended position and solder it.

(Allow time to radiate heat during soldering so that the fuse does not melt.)

CAUTION

When replacing the fuse, be sure not to break down the varistor.

Fuse

Fig. 22

Soldering iron

1042_X_S

PCB Ass’y

Fuse Varistor

Pliers

Fig. 23

1043_X_S

– 54 –

SM830092

12. SERVICE PROCEDURES

11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN INSTALLING UNIT

11-1. Characteristics of New Refrigerant R410A

11-1-1. What is New Refrigerant R410A?

R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture which do not adversely affect the earth’s ozone layer. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.

11-1-2. Components (mixing proportions)

HFC32 (50%) / HFC125 (50%)

11-1-3. Characteristics

Less toxic, more chemically stable refrigerant

The composition of refrigerant R410A changes whether it is in a 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 (in liquid phase).

When refrigerant R410A 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 liquid phase.

CAUTION

Ether-type oil is used for compressor oil for R410A-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.

11-2. Checklist Before Installation

Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ between these two tools. Where a conventional flare tool is used, make sure to observe A Specification

(amount of protrusion).

Diameter of tube (ø) D

ø6.35 (1/4")

ø19.05 (3/4")

Flare tool for R410A

A Specification

Conventional flare tool (for R22)

0 – 0.5 mm

0 – 0.5 mm

1.0 – 1.5 mm

1.0 – 1.5 mm

Size of flare

D D

A

A

Flare tool for R410A Conventional flare tool (R22)

Flare nut: Because the new refrigerant R410A operates at 1.6 times higher pressure than the conventional refrigerant R22, the flare nuts that came with the unit must be used.

SM830092

– 55 –

12. SERVICE PROCEDURES

Tubing precautions

Refrigerant R410A is more easily affected by dust or moisture compared to R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation.

Never use 0.7mm-thick copper tubing or tubing which is less than 0.8mm in thickness, since air conditioners with R410A are subject to higher pressure than those using R22 and R407C.

Narrow tube

Wide tube

Outer diameter: mm (inch)

ø6.35 (1/4")

ø19.05 (3/4")

Tubing wall thickness: mm (inch)

0.8 (0.032)

1.0 (0.042)

No addition of compressor oil for R410A

No additional charge of compressor oil is required.

No use of refrigerant other than R410A

Never use a refrigerant other than R410A.

If refrigerant R410A is exposed to fire

Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sure to provide ample ventilation during installation work.

Caution in case of R410A leak

Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room,

immediately provide thorough ventilation.

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SM830092

12. SERVICE PROCEDURES

11-3. Tools Specifically for R410A

For servicing, use the following tools for R410A

Tool Distinction

Tools specifically for R410A

Tools which can be commonly used for R22,

R407C, and R410A

Tool Name

Gauge manifold

Charging hose

Gas leak detector

Refrigerant cylinder

Charging cylinder

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

Torque wrench

Cutter, reamer

Welding machine, nitrogen gas cylinder

CAUTION

The above tools specifically for R410A must not be used for R22 and R407C.

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 R410A and never alternately with R22 and R407C.

To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, sizes of the service ports and flare nuts of the narrow tube service valve and wide tube service valve have been altered.

SM830092

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SM830092

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