Toshiba RAS-M10YKV-E, RAS-M10YKCV-E, RAS-M18YAV-E, RAS-M18YACV-E SERVICE MANUAL

SERVICE MANUAL

AIR-CONDITIONER

FILE NO. A00-9906

SUPPLEMENT

SPLIT TYPE

RAS-M10YKV-E, RAS-M13YKV-E

/

RAS-M18YAV-E

R AS-M10YKCV-E, RAS-M13YKCV-E

RAS-M18YACV-E

/

R410A

PRINTED IN JAPAN, Nov.,1999 ToMo

CONTENTS

1. SPECIFICATIONS ...................................................................................... 3

2. REFRIGERANT R410A .............................................................................. 8

3. CONSTRUCTION VIEWS......................................................................... 16

4. WIRING DIA GRAM................................................................................... 18

5. SPECIFICATIONS OF ELECTRICAL PARTS.......................................... 21

6. REFRIGERANT CYCLE DIAGRAM......................................................... 22

7. CONTROL BLOCK DIA GRAM................................................................. 25

8. OPERATION DESCRIPTION ................................................................... 28

9. INSTALLATION PROCEDURE ................................................................ 41

10. HOW T O DIAGNOSE THE TROUBLE ...................................................... 49

11. HOW TO REPLACE THE MAIN PARTS ................................................... 69

12. EXPLODED VIEWS AND PARTS LIST.................................................... 80

– 2 –

1. SPECIFICATIONS

1-1. Specifications

RAS-M10YKV-E, RAS-M13YKV-E / RAS-M18YAV-E

Unit model Indoor
Current limited

Cooling capacity (kW)
Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply
Electric Indoor Unit model
characteristics

COP (Cooling/Heating)
Operating noise Indoor Unit model

Indoor unit Unit model

Outdoor unit Unit model

Piping connection Type

Refrigerant Name of refrigerant
Wiring connection Power supply
Usable temperature range Indoor (Cooling/Heating) (°C)
Accessory Indoor unit Installation plate

Outdoor

Running current (A)
Power consumption (W)
Power factor (%)

Outdoor Unit model

Operation mode
Running current (A)
Power consumption (W)
Power factor (%)
Starting current (A)

High (dB•A)
Medium (dB•A)
Low (dB•A)

Outdoor Unit model

10-1 indoor unit operating (dB•A)
13-1 indoor unit operating (dB•A)
2 indoor unit operating (dB•A)

Dimension Height (mm)

Width (mm)

Depth (mm)
Net weight (kg)
Fan motor output (W)
Air flow rate (Cooling/Heating) (m3/h)

Dimension Height (mm)

Width (mm)

Depth (mm)
Net weight (kg)
Compressor Motor output (W)

Type

Model
Fan motor output (W)
Air flow rate (m3/h)

Indoor unit Unit model

Liquid side

Gas side
Outdoor unit Unit model

A unit liquid side/gas side

B unit liquid side/gas side
Maximum length (per unit) (m)
Maximum length (total) (m)
Maximum chargeless length (m)
Maximum height difference (m)

Weight (kg)

Interconnection

Outdoor (Cooling/Heating) (°C)

Wireless remote control

Label

Remote control holder

Pan head wood screw

Purifying filter

Deodorizing filter

Batteries

Mounting screw

Installation manual
Outdoor unit Installation manual

Owner's manual

RAS-M10YKV-E (Cooling / Heating) RAS-M13YKV-E (Cooling / Heating)

Twin rotar y type with DC-inverter variable speed control

• For performance when each indoor unit is combined with other unit, ref er to the separate table .

• The specifications may be subject to change without notice f or purpose of improv ement.

RAS-M10YKV-E, RAS-M13YKV-E

RAS-M18YAV-E

—

5,2

1,4 – 6,2

6,7

0,9 – 8,7

220 – 230 – 240V – 1Ph – 50 Hz

RAS-M10YKV-E RAS-M13YKV-E

0,15 0,15

30 30
87 87

RAS-M18YAV-E

Cooling Heating

7,90 / 7,57 / 7,28 8,55 / 8,17 / 7,81

1660 1790

95% 95%

9,86 / 9,43 / 9,04

3,02 / 3,62

36 / 39 39 / 40
33 / 35 35 / 35
30 / 30 30 / 30

RAS-M18YAV-E (Cooling / Heating)

42 / 45
46 / 49
46 / 49

RAS-M10YKV-E RAS-M13YKV-E

265 265
790 790
189 189

88

19 19

470 / 520 520 / 560

RAS-M18YAV-E

550
780
270

44

1100

DA130A1F-21F

40

2060

Flare connection

RAS-M10YKV-E RAS-M13YKV-E

Ø6,35 Ø6,35
Ø9,52 Ø9,52

RAS-M18YAV-E

Ø6,35 / Ø9,52
Ø6,35 / Ø9,52

20
30
30
10

R410A

1,15
3 Wires : includes earth
4 Wires : includes earth

21 – 32 / 0 – 28

21 – 43 / –5 – 21

1
1
2
1

2 (Ø3,1 x 16L)

1
1
2

6 (Ø4 x 25L)

1
1
1

– 3 –

RAS-M10YKCV-E, RAS-M13YKCV-E / RAS-M18YACV-E

Unit model Indoor
Cooling capacity (kW)

Cooling capacity range (kW)
Power supply
Electric Indoor Unit model

characteristics

COP
Operating noise Indoor Unit model

Indoor unit Unit model

Outdoor unit Unit model

Piping connection Type

Refrigerant Name of refrigerant
Wiring connection Power supply
Usable temperature range Indoor (°C)
Accessory Indoor unit Installation plate

Outdoor

Running current (A)
Power consumption (W)
Power factor (%)

Outdoor Unit model

Running current (A)
Power consumption (W)
Power factor (%)
Starting current (A)

High (dB•A)
Medium (dB•A)
Low (dB•A)

Outdoor Unit model

10-1 indoor unit operating (dB•A)
13-1 indoor unit operating (dB•A)
2 indoor unit operating (dB•A)

Dimension Height (mm)

Width (mm)

Depth (mm)
Net weight (kg)
Fan motor output (W)
Air flow rate (m3/h)

Dimension Height (mm)

Width (mm)

Depth (mm)
Net weight (kg)
Compressor Motor output (W)

Type

Model
Fan motor output (W)
Air flow rate (m3/h)

Indoor unit Unit model

Liquid side

Gas side
Outdoor unit Unit model

A unit liquid side/gas side

B unit liquid side/gas side
Maximum length (per unit) (m)
Maximum length (total) (m)
Maximum chargeless length (m)
Maximum height difference (m)

Weight (kg)

Interconnection

Outdoor (°C)

Wireless remote control

Label

Remote control holder

Pan head wood screw

Purifying filter

Deodorizing filter

Batteries

Mounting screw

Installation manual
Outdoor unit Installation manual

Owner's manual

RAS-M10YKCV-E, RAS-M13YKCV-E

RAS-M18YACV-E

5,2

1,4 – 6,2

220 – 230 – 240V – 1Ph – 50 Hz

RAS-M10YKCV-E RAS-M13YKCV-E

0,15 0,15

30 30
87 87

RAS-M18YACV-E

7,90 / 7,57 / 7,28

1660

95%

8,20 / 7,87 / 7,58

3,02

RAS-M10YKCV-E RAS-M13YKCV-E

36 39
33 35
30 30

RAS-M18YACV-E

42
46
46

RAS-M10YKCV-E RAS-M13YKCV-E

265 265
790 790
189 189

88

19 19

470 520

RAS-M18YACV-E

550
780
270

42

1100

Twin rotar y type with DC-inverter variable speed control

DA130A1F-21F

40

2060

Flare connection

RAS-M10YKCV-E RAS-M13YKCV-E

Ø6,35 Ø6,35
Ø9,52 Ø9,52

RAS-M18YACV-E

Ø6,35 / Ø9,52
Ø6,35 / Ø9,52

20
30
30
10

R410A

1,15
3 Wires : includes earth
4 Wires : includes earth

21 – 32
21 – 43

1
1
2
1

2 (Ø3,1 x 16L)

1
1
2

6 (Ø4 x 25L)

1
1
1

• For performance when each indoor unit is combined with other unit, ref er to the separate table .

• The specifications may be subject to change without notice f or purpose of improv ement.

– 4 –

1-2. Specifications of Performance When Each Indoor Unit is Combined with Other Unit

<Cooling>

Volts

V

220

230

240

Operation

status

1 unit

2 units

1 unit

2 units

1 unit

2 units

Operating Unit capacity Cooling Running Power Outdoor

indoor unit (kW) capacity current consumption

ABAB kW A W dB

10 — 2,7 — 2,7 4,13 770 42
13 — 3,7 — 3,7 6,58 1240 46
10 10 2,55 2,55 5,1 8,14 1700 46
13 10 3,01 2,19 5,2 8,20 1720 46
10 — 2,7 — 2,7 3,95 770 42
13 — 3,7 — 3,7 6,30 1240 46
10 10 2,55 2,55 5,1 7,78 1700 46
13 10 3,01 2,19 5,2 7,87 1720 46
10 — 2,7 — 2,7 3,79 770 42
13 — 3,7 — 3,7 6,03 1240 46
10 10 2,55 2,55 5,1 7,46 1700 46
13 10 3,01 2,19 5,2 7,58 1720 46

(1,1 to 3,2) (1,65 to 4,99) (255 to 930)
(1,1 to 4,2) (1,65 to 7,25) (255 to 1430)
(1,4 to 6,1) (1,68 to 10,29) (260 to 2150)
(1,4 to 6,2) (1,68 to 10,38) (260 to 2170)
(1,1 to 3,2) (1,59 to 4,78) (255 to 930)
(1,1 to 4,2) (1,59 to 6,94) (255 to 1430)
(1,4 to 6,1) (1,62 to 9,84) (260 to 2150)
(1,4 to 6.2) (1,62 to 9,93) (260 to 2170)
(1,1 to 3,2) (1,52 to 4,58) (255 to 930)
(1,1 to 4,2) (1,52 to 6,65) (255 to 1430)
(1,4 to 6,1) (1,55 to 9,43) (260 to 2150)
(1,4 to 6,2) (1,55 to 9,52) (260 to 2170)

operating noise

<Heating>

Volts

Operation

V

220

230

240

status

1 unit

2 units

1 unit

2 units

1 unit

2 units

Operating Unit capacity Heating Running Power Outdoor

indoor unit (kW) capacity current consumption

ABAB kW A W dB

10 — 4,0 — 4,0 6,94 1450 45
13 — 5,0 — 5,0 9,86 2060 49
10 10 3,2 3,2 6,4 8,47 1770 49
13 10 3,72 2,98 6,7 8,85 1850 49
10 — 4,0 — 4,0 6,64 1450 45
13 — 5,0 — 5,0 9,43 2060 49
10 10 3,2 3,2 6,4 8,10 1770 49
13 10 3,72 2,98 6,7 8,47 1850 49
10 — 4,0 — 4,0 6,36 1450 45
13 — 5,0 — 5,0 9,04 2060 49
10 10 3,2 3,2 6,4 7,76 1770 49
13 10 3,72 2,98 6,7 8,11 1850 49

(0,7 to 5,2) (1,10 to 8,13) (170 to 1700)
(0,7 to 6,5) (1,10 to 12,11) (170 to 2530)
(0,9 to 8,3) (1,10 to 11,43) (170 to 2390)
(0,9 to 8,7) (1,10 to 11,72) (170 to 2450)
(0,7 to 5,2) (1,06 to 7,78) (170 to 1700)
(0,7 to 6,5) (1,06 to 11,58) (170 to 2530)
(0,9 to 8,3) (1,06 to 10,94) (170 to 2390)
(0,9 to 8,7) (1,06 to 11,21) (170 to 2450)
(0,7 to 5,2) (1,01 to 7,46) (170 to 1700)
(0,7 to 6,5) (1,01 to 11,10) (170 to 2530)
(0,9 to 8,3) (1,01 to 10,48) (170 to 2390)
(0,9 to 8,7) (1,01 to 10,75) (170 to 2450)

operating noise

• The above specification values are those under the conditions
Cooling indoor : DB/WB=27/19°C Cooling outdoor : DB=35°C

Heating indoor : DB=20°C Heating outdoor : DB/WB=7/6°C

– 5 –

1-2-1. Operation Characteristic Curve

<Cooling> <Heating>

10

9

8

7

6

5

Current (A)

4

3

• Conditions
Indoor : DB 27˚C/WB 19˚C

2

1

Outdoor : DB 35˚C
Air flow : High
Pipe length : 5m x 2
2 units operating
230V

0

10

0 20 30 40 50 60 70 80 90 100 0 20 40 60 80 100 120 140

12

10

8

6

Current (A)

4

2

0

• Conditions
Indoor : DB 20˚C
Outdoor : DB 7˚C/WB 6˚C
Air flow : High
Pipe length : 5m x 2
2 units operating
230V

Compressor speed (rps) Compressor speed (rps)

1-2-2. Cooling Capacity Variation Ratio According to Temperature

105115

• Conditions
Indoor : DB27˚C

110

Outdoor : DB35˚C
Indoor air flow : High
Pipe length 5m×2

105

2 units operating

100

95

Capacity ratio (%)

90

85

0

100

95
90
85
80
75
70

Capacity ratio (%)

65
60
55
50

32 34

Current Limited Start

• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length 5m×2
2 units operating

36 38 40 4233 35 37 39 41 4314 16 18 20 22 24

– 6 –

Outdoor temp. (˚C)Indoor air wet bulb temp. (˚C)

* Capacity ratio : 100% = 5,2 kW

1-3. Electrical Data

<Cooling>

Combination

of indoor unit

operation

AB

10 —
13 —
10 10
13 10

<Heating>

Combination

of indoor unit

operation

AB

10 —

System

Voltage range Power supply

Volts-

Hz

50 230–1 198 264

Hz

Ph.

Volts-

Ph.

Min. Max. MCA ICF

System

Voltage range Power supply

Min. Max. MCA ICF

MOCP

(Amps)

5,81 5,81 15
8,51 8,51 15
12,10 12,10 15
12,21 12,21 15

MOCP

(Amps)

9,56 9,56 15

Compressor Fan motor FLA

MSC RLA Indoor Outdoor

4,13 4,13 0,15 x 1=0,15 0,50
6,29 6,29 0,15 x 1=0,15 0,50
9,04 9,04 0,15 x 2=0,30 0,50
9,13 9,13 0,15 x 2=0,30 0,50

Compressor Fan motor FLA

MSC RLA Indoor Outdoor

7,13 7,13 0,15 x 1=0,15 0,50

13 —

50 230–1 198 264

10 10
13 10

14,31 14,31 15
13,47 13,47 15
13,81 13,81 15

NOTE :

Model of Indoor unit :

10 : RAS-M10YKV-E, RAS-M10YKCV-E

13 : RAS-M13YKV-E, RAS-M13YKCV-E
MCA : Minimum Circuit Amps.
ICF : Maximum Instantaneous Current Flow

(Equivalent to MCA in case of inv erter air conditioner)
MOCP : Maximum Overcurrent Protection (Fuse only)
MSC : Maximum Starting Current
FLA : Full Load Amps.
RLA : Rated Load Amps. RLA under conditions on the right.

10,93 10,93 0,15 x 1=0,15 0,50
10,14 10,14 0,15 x 2=0,30 0,50
10,41 10,41 0,15 x 2=0,30 0,50

<Cooling>

DB WB

Indoor temp. °C 27 19
Outdoor temp. °C 35 —

<Heating>

DB WB

Indoor temp. °C 20 —
Outdoor temp. °C 7 6

– 7 –

2. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone lay er.

The working pressure of the new refrigerant R410A
is 1,6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water , dust, and e xisting refrigerant or refrigerat­ing oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.

The next section describes the precautions for air
conditioner using the new refrigerant. Conf orming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.

2-1. Safety During Installation/Servicing

As R410A’s pressure is about 1,6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materi­als exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.

(1) Never use refrigerant other than R410A in an air

conditioner which is designed to operate with
R410A.

If other refrigerant than R410A is mixed, pres­sure in the refrigeration cycle becomes abnor­mally high, and it may cause personal injury, etc.
by a rupture.

(2) Confirm the used refrigerant name, and use

tools and materials exclusive f or the refrigerant
R410A.

The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air condi­tioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.

(3) If a refrigeration gas leakage occurs during

installation/servicing, be sure to ventilate fully .
If the refrigerant gas comes into contact with fire,

a poisonous gas may occur .

(4) When installing or removing an air conditioner,

do not allow air or moisture to remain in the
refrigeration cycle. Otherwise , pressure in the
refrigeration cycle may become abnormally high
so that a rupture or personal injury may be
caused.

(5) After completion of installation work, check to

make sure that there is no refrigeration gas
leakage.

If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.

(6) When an air conditioning system charged with a

large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks , its concentration
does not exceed the marginal lev el.

If the refrigerant gas leakage occurs and its
concentration exceeds the marginal le v el, an
oxygen starvation accident may result.

(7) Be sure to carry out installation or removal

according to the installation manual.
Improper installation may cause refrigeration

trouble, water leakage , electric shock, fire, etc.

(8) Unauthorized modifications to the air conditioner

may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.

Improper repair’s ma y result in water leakage ,
electric shock and fire, etc.

2-2. Refrigerant Piping Installation

2-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.

(1) Copper Pipes

It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discol­ored portion (especially on the interior surface).
Otherwise, the expansion v alv e or capillary tube
may become bloc ked with contaminants.

As an air conditioner using R410A incurs
pressure higher than when using R22, it is
necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A
are as shown in Table 2-2-1. Never use copper
pipes thinner than 0,8 mm even when it is
availab le on the market.

– 8 –

T a ble 2-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter Outer diameter (mm) R410A R22

1/4 6,35 0,80 0,80
3/8 9,52 0,80 0,80
1/2 12,70 0,80 0,80
5/8 15,88 1,00 1,00

(2) Joints

For copper pipes, flare joints or soc ket joints are
used. Prior to use, be sure to remove all con­taminants.

a) Flare Joints

Flare joints used to connect the copper pipes
cannot be used for pipings whose outer
diameter exceeds 20 mm. In such a case,
socket joints can be used.

Sizes of flare pipe ends, flare joint ends and
flare nuts are as shown in T ables 2-2-3 ~ 2-2­6 below.

Table 2-2-2 Minimum thicknesses of socket joints

Nominal diameter

1/4 6,35 0,50
3/8 9,52 0,60
1/2 12,70 0,70

Reference outer diameter of Minimum joint thickness

copper pipe jointed (mm) (mm)

b) Socket Joints

Socket joints are such that the y are braz ed
for connections, and used mainly f or thic k
pipings whose diameter is larger than 20 mm.
Thicknesses of sock et joints are as shown in
T ab le 2-2-2.

5/8 15,88 0,80

2-2-2. Processing of Piping Materials

When performing the refrigerant piping installation,
care should be taken to ensure that water or dust
does not enter the pipe interior, that no other oil
other than lubricating oils used in the installed air
conditioner is used, and that refrigerant does not
leak. When using lubricating oils in the piping
processing, use such lubricating oils whose water
content has been removed. When stored, be sure to
seal the container with an airtight cap or any other
cover .

(1) Flare Processing Procedures and Precautions

a) Cutting the Pipe

By means of a pipe cutter, slo wly cut the pipe
so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs,
refrigerant leakage may occur. Carefully
remove all b urrs and clean the cut surface
before installation.

– 9 –

c) Insertion of Flare Nut
d) Flare Processing

Make certain that a clamp bar and copper
pipe have been cleaned.

By means of the clamp bar, perform the flare
processing correctly.

Use either a flare tool for R410A or conven­tional flare tool.

Table 2-2-3 Dimensions related to flare processing for R410A

Flare processing dimensions differ according
to the type of flare tool. When using a con­ventional flare tool, be sure to secure “dimen­sion A” by using a gauge for size adjustment.

ØD

A

Fig. 2-2-1 Flare processing dimensions

Nominal

diameter

Outer

diameter

(mm)

1/4 6,35 0,8
3/8 9,52 0,8
1/2 12,70 0,8
5/8 15,88 1,0

T a ble 2-2-4 Dimensions related to flare processing for R22

Nominal

diameter

Outer

diameter

(mm)

1/4 6,35 0, 8
3/8 9,52 0, 8
1/2 12,70 0,8

Thickness

(mm)

Thickness

(mm)

A (mm)

Flare tool for

R410A clutch type

Conventional flare tool

Clutch type Wing nut type

0 to 0,5 1,0 to 1,5 1,5 to 2,0
0 to 0,5 1,0 to 1,5 1,5 to 2,0
0 to 0,5 1,0 to 1,5 2,0 to 2,5
0 to 0,5 1,0 to 1,5 2,0 to 2,5

A (mm)

Flare tool for

R22 clutch type

Conventional flare tool

Clutch type Wing nut type

0 to 0,5 0,5 to 1,0 1,0 to 1,5
0 to 0,5 0,5 to 1,0 1,0 to 1,5
0 to 0,5 0,5 to 1,0 1,5 to 2,0

5/8 15,88 1,0

Table 2-2-5 Flare and flare nut dimensions for R410A

Nominal Outer diameter Thickness

diameter (mm) (mm)

1/4 6,35 0, 8
3/8 9,52 0, 8
1/2 12,70 0,8
5/8 15,88 1,0

0 to 0,5 0,5 to 1,0 1,5 to 2,0

Dimension (mm)

Flare nut

width

ABCD

(mm)

9,1 9,2 6,5 13 17
13,2 13,5 9,7 20 22
16,6 16,0 12,9 23 26
19,7 19,0 16,0 25 29

– 10 –

Table 2-2-6 Flare and flare nut dimensions for R22

Nominal Outer diameter Thickness

diameter (mm) (mm)

1/4 6,35 0,8
3/8 9,52 0,8
1/2 12,70 0,8
5/8 15,88 1,0
3/4 19,05 1,0

46˚

~

45˚

B A

Dimension (mm)

Flare nut

width

ABCD

(mm)

9,0 9,2 6,5 13 17
13,0 13,5 9,7 20 22
16,2 16,0 12,9 20 24
19,4 19,0 16,0 23 27
23,3 24,0 19,2 34 36

D

C

43˚

~

45˚

Fig. 2-2-2 Relations between flare nut and flare seal surface

(2) Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions

do not have any scar or dust, etc.

b) Correctly align the processed flare surface

with the union axis.

c) Tighten the flare with designated torque by

means of a torque wrench. The tightening
torque for R410A is the same as that for
conventional R22. Incidentally, when the
torque is weak, the gas leakage may occur .

T a ble 2-2-7 Tightening torque of flare for R410A [Reference values]

Nominal Outer diameter Tightening torque

diameter (mm) N•m (kgf•cm)

1/4 6,35 14 to 18 (140 to 180) 16 (160), 18 (180)

When it is strong, the flare nut may cra c k and
may be made non-remov abl e. When choos­ing the tightening torque, comply with values
designated by manufacturers . Table 2-2-7
shows reference values.

Note:

When applying oil to the flare surface, be sure to use
oil designated by the manufacturer. If any other oil is
used, the lubricating oils may deteriorate and cause
the compressor to burn out.

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

3/8 9,52 33 to 42 (330 to 420) 42 (420)
1/2 12,70 50 to 62 (500 to 620) 55 (550)
5/8 15,88 63 to 77 (630 to 770) 65 (650)

– 11 –

2-3. Tools

2-3-1. Required Tools

The service port diameter of packed v alve of the outdoor unit in the air conditioner using R410A is changed to pre vent
mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side
dimension of flare nut (For Ø12,7 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge ,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the f ollo wing three types.

(1) Tools exclusive f or R410A (Those which cannot be used f or conventional refrigerant (R22))
(2) Tools exclusive f or R410A, b ut can be also used for conventional refrigerant (R22)
(3) Tools commonly used for R410A and for con v entional refrigerant (R22)

The table below shows the tools e xclusiv e for R410A and their interchangeability .

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

R410A air conditioner

installation

No. Used tool

 Flare tool

Copper pipe gauge for

 adjusting projection

margin
Torque wrench



(For Ø12,7)

 Gauge manifold
 Charge hose

 Vacuum pump adapter

Electronic balance for



refrigerant charging

 Refrigerant cylinder
 Leakage detector
 Charging cylinder

(Note 1) When flaring is carried out for R410A using the conv entional flare tools , adjustment of projection

margin is necessary . For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently developed.

Usage

Pipe flaring
Flaring by

conventional flare
tool

Connection of flare
nut

Evacuating, refriger­ant charge, run
check, etc.

Vacuum evacuating
Refrigerant charge

Refrigerant charge
Gas leakage check
Refrigerant charge

Existence of Whether
new equipment conventional
for R410A equipment can

Yes

Yes

Yes

Yes

Yes
Yes
Yes

Yes

(Note 2)

be used

(Note 1)

*

(Note 1)

*

X
X

X
X

X
X
X

Conventional air

conditioner installation

Whether new equip­ment can be used with
conventional refriger­ant

¡

(Note 1)

*

X
X

¡
¡

X

¡

X

General tools (Conventional tools can be used.)

In addition to the above e xclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.

(1) Vacuum pump

Use vacuum pump by

attaching vacuum pump adapter.
(2) Torque wrench (For Ø6,35)
(3) Pipe cutter

Also prepare the following equipments f or other installation method and run check.

(1) Clamp meter
(2) Thermometer

(4) Reamer
(5) Pipe bender
(6) Level vial
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench

(3) Insulation resistance tester
(4) Electroscope

(9) Hole core drill (Ø65)
(10) Hexagon wrench

(Opposite side 5mm)

(11) Tape measure
(12) Metal saw

– 12 –

2-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.

Recover the refrigerant, and check no refrigerant
remains in the equipment.

Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.

When the compound gauge’s pointer has indicated
–0,1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.

Connect the charge hose of the vacuum pump
adapter.

Open fully both packed valves at liquid and gas
sides.

Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.

Never charge refrigerant e xceeding the specified amount.



If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.



Do not carry out additional charging.



Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.

Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.

(For refrigerant charging, see the figure below.)

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally
high pressure, and may cause a rupture or personal injury.

(INDOOR unit)

Refrigerant cylinder

(With siphon pipe)

Check valve

Open/Close valve

for charging

Electronic balance for refrigerant charging

Fig. 2-4-1 Configuration of refrigerant charging

(Liquid side)

(Gas side)

– 13 –

(OUTDOOR unit)

Opened

Closed

Service port

Be sure to make setting so that liquid can be charged.



When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.



It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ] [ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit

Refrigerant

cylinder

Gauge manifold

OUTDOOR unit

cylinder

Refrigerant

Electronic

balance

R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the compo­sition of the charged refrigerant changes and
the characteristics of the equipment varies.

2-5. Brazing of Pipes

2-5-1. Materials for Brazing

(1) Silver brazing filler

Silver brazing filler is an alloy mainly composed
of silver and copper . It is used to join iron,
copper or copper alloy, and is relatively expen­sive though it excels in solderability.

(2) Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used
to join copper or copper alloy.

(3) Low temperature brazing filler

Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.

Fig. 2-4-2

Electronic

balance

Siphon

Phosphor bronze brazing filler tends to react



with sulfur and produce a fragile compound
water solution, which may cause a gas leak­age. Therefore, use any other type of brazing
filler at a hot spring resort, etc., and coat the
surface with a paint.

When performing brazing again at time of



servicing, use the same type of brazing filler.

2-5-2. Flux

(1) Reason why flux is necessary

• By removing the oxide film and any foreign
matter on the metal surface, it assists the flo w
of brazing filler .

• In the brazing process, it prevents the metal
surface from being o xidized.

• By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated
metal.

– 14 –

(2) Characteristics required for flux

• Activated temperature of flux coincides with
the brazing temperature.

• Due to a wide effective temper ature range,
flux is hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and
brazing filler is minimum.

• It excels in coating performance and is
harmless to the human body .

As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.

(3) Types of flux

• Noncorrosive flux

Generally, it is a compound of borax and boric
acid.
It is effective in case where the br azing
temperature is higher than 800°C.

• Activated flux

Most of fluxes generally used f or silv er br azing
are this type.
It features an increased oxide film remo ving
capability due to the addition of compounds
such as potassium fluoride, potassium chlo­ride and sodium fluoride to the borax-boric
acid compound.

(4) Piping materials for brazing and used braz-

ing filler/flux

2-5-3. Brazing

As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.

In order to prev ent the o xide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow .

Never use gas other than Nitrogen gas.

(1) Brazing method to prevent oxidation

Attach a reducing valve and a flow-meter to



the Nitrogen gas cylinder.
Use a copper pipe to direct the piping



material, and attach a flow-meter to the
cylinder.

Apply a seal onto the clearance between the



piping material and inserted copper pipe for
Nitrogen in order to prevent bac kflo w of the
Nitrogen gas.

When the Nitrogen gas is flowing, be sure to



keep the piping end open.
Adjust the flow rate of Nitrogen gas so that it



is lower than 0,05 m3/Hr or 0,02 MPa (0,2kgf/
cm2) by means of the reducing valve .

After performing the steps above , keep the



Nitrogen gas flowing until the pipe cools
down to a certain extent (temperature at
which pipes are touchable with hands).

Remove the flux completely after brazing.



Piping

material

Copper - Copper

Copper - Iron

Iron - Iron

Do not enter flux into the refrigeration cycle.



When chlorine contained in the flux remains



within the pipe, the lubricating oil deterio­rates. Therefore, use a flux which does not
contain chlorine.

When adding water to the flux, use water



which does not contain chlorine (e.g. distilled
water or ion-exchange w ater).

Remove the flux after brazing.



Used brazing Used

filler flux

Phosphor copper Do not use

Silver Paste flux
Silver Vapor flux

M

Flow meter

Stop valve

Nitrogen gas

cylinder

From Nitrogen cylinder

Pipe

Rubber plug

Fig. 2-5-1 Prevention of oxidation during brazing

– 15 –

Nitrogen
gas

3. CONSTRUCTION VIEWS

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3-1. Indoor Unit

RAS-M10YKV-E, RAS-M13YKV-E
RAS-M10YKCV-E, RAS-M13YKCV-E

Air inlet

265

Air outlet

Air filter

790

Heat exchanger

50 94

47

189

47

Knock out system

50

10

External
length reference

Hanger

26

46

265

178,5

37

3,5

790

Hanger

232 326 232

321

Connecting pipe (0,39m)

Hanger

Drain hose (0,54m)

Connecting pipe (0,49m)
(Flare ø6,35)(Flare ø9,52)

65965,5

65,5
450
344
326

Minimum
distance

2,5

to ceiling

66 or more

Minimum
distance

17 20

to wall

20 20

120 or more 120 or more

37

Hanger

60,5

126269319

10,5

76

Hanger

Installation
plate outline

Center line

790

Front panel

Back body

47

50

10

Knock out system

Hanger

For stud bolt
(ø8~ø10)

For stud bolt
(ø6)

Minimum
distance to wall

40,5

Wireless
remote control

55

136

16

– 16 –

3-2. Outdoor Unit

RAS-M18YAV-E
RAS-M18YACV-E

310

A leg part

296

270

600

ø25 drain hole

115

76

90

ø11 × 17U-shape hole

50

(For ø8-ø10 anchor bolt)

Hanger

(ø6 hole pitch)

(Anchor bolt long hole pitch)

B leg part

ø4,5 embossing (ø4STS used)
(For sunshade roof attaching)

14749,5

21

540

550

8

Fan guard

16

115,5

780 61

8-ø6 hole
(For fixing outdoor unit)

ø11 × 17 long hole

(For ø8-ø10 anchor bolt)

Valve cover

Charging
port

122,8

Earth terminal

157

332

59

21

Z

53 53 53

96,2

Connecting pipe port

(Pipe dia.ø6,35)

Connecting pipe port

(Pipe dia.ø9,52)

4 × ø11 × 17U-shape hole
(For ø8-ø10 anchor bolt)

Intake

100 or

C

310

more

200 or more

Mounting dimensions of anchor bolt

600

50 or

more

D

Outlet

B

Intake

Outside line
of product

4 × ø11 × 17 long hole
(For ø8-ø10 anchor bolt)

Z

view

A

250 or more

(Minimum distance
from wall)

Detailed A leg part

50
36

11

310

296

R5,5

11

310

296

36
50

Detailed B leg part

600

2-ø6 hole

2-ø6 hole

600

R15

Outside line
of product

Outside line
of product

R15

R5,5

– 17 –

4-1. Indoor Unit

RAS-M10YKV-E, RAS-M13YKV-E
RAS-M10YKCV-E, RAS-M13YKCV-E

BLK
P04

SG01 DSA

VARISTOR

T6,3A 250V

F01 FUSE

INDOOR

TERMINAL

BLOCK

3

2

BLK

1
2
3

WHI
RED

CN30

4. WIRING DIAGRAM

LOUVER

MOTOR

R109

R116

J04

R21

IC04

L01

C15

MAIN P.C. BOARD

(MCC-772)

BLU

PNK

YEL

ORN

RED

6 5 4 3 2 1
6 5 4 3 2 1

CN07

R01

C01

C02

BRW

DB01

FAN MOTOR

DC MOTOR

4 3 2

5

4

3 211

5

CN10

TO1

C06

65

DC35V

DC12V

DC7V

DC0V

IC02

OUTDOOR

UNIT

Check items

OPERATION
indicator

Terminal
block

Fuse
6,3A

DC 5V

DC 12V

DC 35V

GRN & YEL

INDOOR

UNIT

CN23

CN13

1

2

3

4

BLU

BLU

BLU

BLU

1

2

3

1

1

INFRARED RAYS RECEIVE

AND INDICATION PARTS

4

2

3

4

5

BLU

5
5

6

BLU

6
6

4

7

PNK

7
7

8

BLK

8
8

9

WHI

9
9

Table 4-1-1 Simple check points for diagnosing faults

Diagnosis result

Check to see if the OPERATION indicator goes on and off when the main
switch or breaker is turned on, or the power cord is plugged in the wall
outlet. (Check the primary and secondary voltage of transformer.)

Check for power supply voltage between  – . (Refer to the name
plate.) (Check the primary and secondary voltage of transformer.)
Check for fluctuate voltage between  – . (DC 15 to 60V)

Check to determine if the fuse is open.
(Check Varistor : R109, R21)

Check for voltage at the pink lead of the infrared rays receive parts.
(Check the transformer and the rated voltage power supply circuit.)

Check for voltage at the  lead of louver motor.
(Check the transformer and the rated voltage power supply circuit.)

Check for voltage at the CN10 connector side point.
(Check the transformer and the rated voltage power supply circuit.)

CN25

CN03

21
21

BLK

BLK

THERMO
SENSOR

(TA)

IC

IC01

CN01

BLK

IDENTIFICATION

GRN

&YEL

21
21

BLK

HEAT

EXCHANGER

SENSOR

(TC)

COLOR

BROWNBRW :
REDRED :
WHITEWHI :
YELLOWYEL :
BLUEBLU :
BLACKBLK :
GRAYGRY :
PINKPNK :
ORANGEORN :
GREEN &

:

YELLOW

For detailed diagnostic procedure, refer to the ser vice data.
DSA : Surge Absorber

– 18 –

4-2. Outdoor Unit

RAS-M18YAV-E

ORN P10

G
E
A

~

MODULE

–

CONVERTER

~

DB01

+

YEL

+
BU
EU
BV
EV

BW
EW

BX

IGBT MODULE

BY

BZ

–

Q200

BLU

P09

P19
P20

P18
P17

4 way
valve

3

CN701

POWER RELAY

ELECTRONIC

STARTER

P.C. BOARD

MCC-758

REACTOR

1

11223

L01

POWER
SUPPLY

220–230–240V~

FAN MOTOR

FM

PNK

YEL

RED

WHI

CN300

BLK

321
321

P06

SURGE

ABSORBER

VARISTOR

L03

GRY

221

P07P08

C14C12

CN301

RELAY

RY04

C15C13

CT

RELAY
RY06

1234455
123

F03
FUSE
15A

F04
FUSE
3,15A

50/60Hz

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

L

WHI

BLKBLK

F01
FUSE
25A

To

INDOOR

UNIT

A

N 1 2 3 1 2 3

BRW

1

RED

2

CN704

ORN

3

YEL

4

1

CN501

313

P11

YEL

YEL

P12
P13

P14

REDP21
WHI

P22

BLKP23

REACTOR

11
22

REACTOR

PUR

1

1

2

2

3

3

To

INDOOR

UNIT

B

THERMOSTAT for COMPRESSOR

ORN

P04

RED

P05

WHI

P06

BRW

1

1

RED

2

2

CN15

ORN

3

3

YEL

4

4

BLK

GRY

CM

F01

FUSE 6,3A

P02
P01

PHOTO

COUPLER

SUB

P.C. BOARD

MCC-775

COMPRESSOR

CN01

WHI

CN08

WHI

CN02

WHI

CN03

WHI

CN04

BLK

CN05

YEL

CN14

CN13

1 1
2 2

1 1
2 2

1 1
2 2
3 3

1 1
2 2

1 1
2 2

1 1
2 2
3 3

6 6
5 5
4 4
3 3
2 2
1 1

6 6
5 5
4 4
3 3
2 2
1 1

GRY
RED
BLU
ORN
YEL
WHI

GRY
RED
BLU
ORN
YEL
WHI

BLK

YEL

TE

TD

TO

TS

TGa

P.M.V.

A UNIT

P.M.V.

B UNIT

– 19 –

COLOR IDENTIFICATION

BLK : BLACK
BLU : BLUE

ORN : ORANGE

GRY : GRAY
PNK : PINK
SKB : SKY-BLUE

P.M.V. : PULSE MODULATING VALVE

WHI : WHITE

BRW : BROWN

RED : RED

YEL : YELLOW

PUR : PURPLE

RAS-M18YACV-E

ORN P10

G

E
A
~

MODULE

–

CONVERTER

~

DB01

+

YEL

+
BU
EU
BV
EV

BW
EW

BX

IGBT MODULE

BY
BZ

–

Q200

BLU

P.C. BOARD

P09

POWER RELAY

ELECTRONIC

P19
P20

P18
P17

REACTOR

CN701

MCC-758

STARTER

CN704

CN501

P11

P12
P13

P22

To

INDOOR

UNIT

A

BRW

1

RED

2

ORN

3

YEL

4

1

313

YEL
YEL

P14

REDP21
WHI
BLKP23

POWER

SUPPLY

220–230–240V~

FAN MOTOR

FM

1

123

L01

PNK

YEL

RED

WHI

GRY

221

P07P08

C14C12

CN301

C15C13

CT

RELAY
RY06

1234455
123

F03
FUSE
15A

F04
FUSE
3,15A

CN300

BLK

321
321

P06

SURGE

ABSORBER

VARISTOR

L03

50/60Hz

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

L

N 1 2 3 1 2 3

BLKBLK

WHI

F01
FUSE
25A

REACTOR

11
22

REACTOR

PUR

1

1

2

2

3

3

To

INDOOR

UNIT

B

THERMOSTAT for COMPRESSOR

ORN

P04

RED

P05

WHI

P06

BRW

1

1

RED

2

2

CN15

ORN

3

3

YEL

4

4

BLK

GRY

FUSE 6,3A

P02
P01

F01

PHOTO

COUPLER

SUB

P.C. BOARD

MCC-775

COMPRESSOR

CM

CN08

WHI

CN02

WHI

CN03

WHI

CN04

BLK

CN05

YEL

CN14

CN13

1 1
2 2

1 1
2 2
3 3

1 1
2 2

1 1
2 2

1 1
2 2
3 3

6 6
5 5
4 4
3 3
2 2
1 1

6 6
5 5
4 4
3 3
2 2
1 1

GRY
RED
BLU
ORN
YEL
WHI

GRY
RED
BLU
ORN
YEL
WHI

BLK

YEL

TD

TO

TS

TGa

P.M.V.

A UNIT

P.M.V.

B UNIT

– 20 –

COLOR IDENTIFICATION

BLK : BLACK

BLU : BLUE

ORN : ORANGE

GRY : GRAY
PNK : PINK

SKB : SKY-BLUE

P.M.V. : PULSE MODULATING VALVE

WHI : WHITE

BRW : BROWN

RED : RED

YEL : YELLOW

PUR : PURPLE

5. SPECIFICATIONS OF ELECTRICAL PARTS

5-1. Indoor Unit

RAS-M10YKV-E, RAS-M13YKV-E / RAS-M10YKCV-E, RAS-M13YKCV-E

No. Parts name Type Specifications

1 Fan motor (for indoor) TICF-35-19-4 DC35V, 19W
2 Thermo. sensor (TA-sensor) ( – ) 10kΩ at 25°C
3 DC-DC transformer (T01) SWT-34 or SWT-46 DC390V, Secondary DC35V, 12V, 7V

4 Microcomputer

Heat exchanger temp. sensor

5

(TC-sensor)
6 Line filter (L01) UF-253Y0R7 25mH, AC0,7A
7 Diode (DB01) RBV-406 or D3SBA60 4A, 600V
8 Capacitor (C02) KMH450VNSN100M25B 100µF, 450V
9 Fuse (F01) TSCR6,3A T6,3A, 250V

10 Power supply IC (IC01) MA2830-FJ 4A, 600V
11 Varistor (R21, R109) 15G561K 560V
12 Resistor (R01) ERF-5TK5R6 5,6Ω, 5W
13 Louver motor MP35EA7 Output (Rated) 2W, 10poles, 1phase DC12V

5-2. Outdoor Unit

RAS-M18YAV-E / RAS-M18YACV-E

No. Parts name Model name Rating

1 SC coil (Noise filter)

2 DC-DC transformer SWT-43 Secondary side
3 Reactor CH38Z-K L=10mH, 16A x 2

4 Reactor CH43Z-K L=10mH, 1A
5 Outside fan motor ICF-140-40-7 DC140V, 40W

6 Fan control relay AJQ1341

Suction temp. sensor

7

(TS sensor)

Discharge temp. sensor

8

(TD sensor)

Outside air temp. sensor

9

(TO sensor)

Temp. sensor at A room

10

gas side (TGa sensor) RAS-M18YAV-E .............62kΩ (20°C)

11 Terminal block (9P) ——— 20A, AC250V
12 Terminal block (3P) ——— 20A, AC250V

13 Fuse

14 Electrolytic capacitor
15 Transistor module 6MBI25GS-060-01 25A, 600V

16 Compressor DA130A1F-21F 3-phases 4-poles 1100W
17 Compressor thermo. PW-2AL OFF: 125 ± 4°C, ON: 90 ± 5°C
18 Converter module MP7002 Diode: 25A, 600V, IGBT: 40A, 600V

Heat exchanger temp. sensor

19

(TE-sensor) (H/P only)

L03 SC-15-S06J 15A, 0,6mH
L01 SC-20-01J 20A, 150µH

TMP87PM40AF or

TMP87CM40AF

( – ) 10kΩ at 25°C

Primary side DC280V
7,5V x 1, 13V x 1, 26,5V x 3, 16V x 1, 15V x 1

Coil DC12V
Contact AC125V, 3A

(Inverter attached) 10kΩ (25°C)
(Inverter attached) 62kΩ (20°C)
(Inverter attached) 10kΩ (25°C)
(Inverter attached)

For protection of

switching power source

For protection of transistor

module breakage

For protection of

inverter input overcurrent

LLQ2G501KHUATF

400LISN500K35F

(Inverter attached) 10kΩ at 25°C

RAS-M18YACV-E .......... 10k Ω (25°C)

3,15A, AC250V
15A, AC250V
25A, AC250V
500µF, DC400V X 4 pieces

– 21 –

6. REFRIGERANT CYCLE DIAGRAM

6-1. Refrigerant Cycle Diagram

RAS-M10YKV-E, RAS-M13YKV-E
RAS-M18YAV-E

To B room

INDOOR UNIT

Indoor heat

exchanger

T1 Temp. measurement

To B room

P

Pressure measurement
Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe
Both A and B rooms

Outer dia. : 9,52mm
Thickness : 0,8mm

Muffler
Ø25 x 80

4 way valve
(VHV-0213)

Accumulating tank
Ø51 x 200
(290cc)

TS

Cross flow fan

Deoxidized copper pipe
Both A and B rooms
Outer dia. : 6,35mm
Thickness : 0,8mm

Sectional shape
of heat insulator

Muffler
Ø25 x 80

TGa

Muffler
Ø25 x 80

Muffler
Ø25 x 160

TD

Compressor
DA130A1F-21F

Outdoor heat

exchanger

Split capillary

Strainer

Ø1,5 x 200

Allowable height

difference : 10m

Strainer
Capillary

Ø2,2 x 200

Pulse modulating
valve at liquid side
(SEV15RC2)

Per 1 unit
Max. : 20m
Total : 30m

Allowable pipe length

Temp. measurement

T

2

Propeller fan

OUTDOOR UNIT

Ø1,5 x 200

TE

NOTE :

Refrigerant amount : 1,15kg

Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)

T able 6-1-1

Each length in one room

Total length in two rooms

Unnecessary to add refrigerant

A room B room

(Standard) 10 m 5 m 5 m Do not add the refrigerant

(Maximum) 30 m 20 (10) m 10 (20) m Do not add the refrigerant

NOTE :

• The maximum pipe length of this air conditioner is 30 m. The additional charging of refrigerant is unneces­sary because this air conditioner is designed with charge-less specification.

• To connect only one indoor unit, use connecting pipe with length by 5m or more.

– 22 –

RAS-M10YKCV-E, RAS-M13YKCV-E
RAS-M18YACV-E

To B room

INDOOR UNIT

Indoor heat

exchanger

T1

Temp. measurement

To B room

P

Pressure measurement
Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe
Both A and B rooms

Outer dia. : 9,52mm
Thickness : 0,8mm

Muffler
Ø25 x 80

Accumulating tank
Ø51 x 200
(290cc)

TS

Muffler
Ø25 x 80

Outdoor heat

exchanger

Cross flow fan

Deoxidized copper pipe
Both A and B rooms
Outer dia. : 6,35mm
Thickness : 0,8mm

Sectional shape
of heat insulator

TGa

TD

Compressor
DA130A1F-21F

Split capillary

Ø1,5 x 200

Allowable height

difference : 10m

Strainer

Capillary
Ø2,2 x 200

Pulse modulating
valve at liquid side
(SEV15RC2)

Per 1 unit
Max. : 20m
Total : 30m

Allowable pipe length

Temp. measurement

T

2

Propeller fan

OUTDOOR UNIT

Ø1,5 x 200

TE

NOTE :

Refrigerant amount : 1,15kg

Gas leak check position
Refrigerant flow

T able 6-1-2

Each length in one room

Total length in two rooms

Unnecessary to add refrigerant

A room B room

(Standard) 10 m 5 m 5 m Do not add the refrigerant

(Maximum) 30 m 20 (10) m 10 (20) m Do not add the refrigerant

NOTE :

• The maximum pipe length of this air conditioner is 30 m. The additional charging of refrigerant is unneces­sary because this air conditioner is designed with charge-less specification.

– 23 –

6-2. Operation Data

<Cooling>

Temperature

condition (°C)

Indoor Outdoor

27/19 35/–

<Heating>

Temperature

condition (°C)

Indoor Outdoor

20/– 7/6

No. of

operating

units

1 unit

2 units

No. of

operating

units

1 unit

2 units

Operating combination

(Unit)

AB

M13YKCV -E
M13YKV -E

M10YKCV -E
M10YKV -E

M13YKCV -E M10YKCV -E
M13YKV -E M10YKV-E

M10YKCV -E M10YKCV -E
M10YKV -E M10YKV-E

Operating combination

(Unit)

AB

M13YKV-E 3,5 to 3,7

M10YKV-E 3,3 to 3,5
M13YKV-E M10YKV-E 2,5 to 2,7
M10YKV-E M10YKV-E 2,5 to 2,7

Standard

pressure

P (MPa)

0,7 to 0,9

0,9 to 1,1

0,8 to 1,0

0,8 to 1,0

Standard

pressure

P (MPa)

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

9 to 11 46 to 48 High High 62

11 to 13 45 to 47 High MED. 38

11 to 13 50 to 52 High High 74

10 to 12 50 to 52 High High 74

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

53 to 55 0 to 2 High High 79
48 to 50 0 to 2 High MED. 63
41 to 43 –2 to 0 High High 9 7
41 to 43 –2 to 0 High High 9 7

Indoor Outdoor Compressor

fan fan revolution

mode mode (rps)

Indoor Outdoor Compressor

fan fan revolution

mode mode (rps)

NOTES :

(1) Measure surface temperature of heat exchanger pipe around center of heat e xchanger path U bent.

(Thermistor themometer)

(2) Connecting piping condition : 5 m x 2 units

– 24 –

7-1. Indoor Unit

Heat Exchanger Sensor

Temperature Sensor

Infrared Rays Signal Receiver

7. CONTROL BLOCK DIAGRAM

Indoor Unit Control Panel

M.C.U

Functions

• Louver Control

• 3-minute Delay at Restart for Compressor

Operation

Display

Timer

Display

Infrared

Initializing Circuit

Rays

Clock Frequency

Oscillator Circuit

Remote

Control

From Outdoor Unit

REMOTE CONTROL

RAS-M10YKV-E, RAS-M13YKV-E

(Heat pump model)

Power Supply

Circuit

Noise Filter

• Motor Revolution Control

• Processing
(Temperature Processing)

• Timer

• Serial Signal Communication

Louver ON/OFF Signal

Serial Signal Transmitter/Receiver

Serial Signal Communication

RAS-M10YKCV-E, RAS-M13YKCV-E

Infrared

Rays

Louver Driver

(Cooling only model)

ECONO.

Sign Display

FAN-ONLY

Sign Display

Indoor

Fan Motor

Louver

Motor

Infrared

Rays

Remote Control

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECONO.

Remote Control
Operation (START/STOP)
Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECONO.

– 25 –

7-2. Outdoor Unit (Inverter Assembly)

RAS-M18YAV-E

CONTROL BLOK DIAGRAM (Outdoor unit)

220–230–240 V ~ 50 Hz

MCC-775 (SUB P.C.B) MCC-758 (MAIN P.C.B)

– 26 –

Outdoor Heat­exchanger
temp.sensor

Discharge
temp. sensor

Suction temp.
sensor

Gas side pipe
temp. sensor

Outdoor air
temp. sensor

A unit

send/receive

circuit

B unit

send/receive

circuit

M.C.U

• Inverter output frequency control

• A/D converter function

• P.M.V. control

• Discharge temp. control

• Error display

• Signal communication to MCU

Driver circuit of P.M.V.

A unit

P.M.V.

B unit

P.M.V.

Noise

filter

M.C.U

• PWM synthesis function

• Input current release control

• IGBT over-current detect control

• Outdoor fan control

• High power factor correction control

• Signal communication to MCU

High power factor

correction circuit

Converter

(AC DC)

Relay
RY04

Input current

Sensor

Over current
detect circuit

Rotor position

detect circuit

Rotor position

detect circuit

Over current

detect circuit

Gate drive

Over current

sensor

Over current

sensor

circuit

Gate drive

circuit

Inverter

AC)

(DC

Inverter

(DC AC)

Outdoor

fan motor

Compressor

P.M.V. : Pulse Modulating Valve
PWM : Pulse Width Modulation
IGBT : Insulated Gate Bipolar Transistor

4 way valve