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

FILE NO. A00-9906

S U P P L E M E N T

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

RAS-M10YKV-E, RAS-M13YKV-E / RAS-M18YAV-E RAS-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 DIAGRAM...................................................................................	18
5.	SPECIFICATIONS OF ELECTRICAL PARTS ..........................................	21
6.	REFRIGERANT CYCLE DIAGRAM .........................................................	22
7.	CONTROL BLOCK DIAGRAM.................................................................	25
8.	OPERATION DESCRIPTION ...................................................................	28
9.	INSTALLATION PROCEDURE ................................................................	41
10.	HOW TO 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				RAS-M10YKV-E, RAS-M13YKV-E
	Outdoor				RAS-M18YAV-E
Current limited					—
Cooling capacity				(kW)	5,2
Cooling capacity range				(kW)	1,4 – 6,2
Heating capacity				(kW)	6,7
Heating capacity range				(kW)	0,9 – 8,7
Power supply					220 – 230 – 240V – 1Ph – 50 Hz
Electric	Indoor	Unit model			RAS-M10YKV-E		RAS-M13YKV-E
characteristics		Running current		(A)	0,15		0,15
		Power consumption		(W)	30		30
		Power factor		(%)	87		87
	Outdoor	Unit model			RAS-M18YAV-E
		Operation mode			Cooling		Heating
		Running current		(A)	7,90 / 7,57 / 7,28		8,55 / 8,17 / 7,81
		Power consumption		(W)	1660		1790
		Power factor		(%)	95%		95%
		Starting current		(A)	9,86 / 9,43 / 9,04
COP (Cooling/Heating)					3,02 / 3,62
Operating noise	Indoor	Unit model			RAS-M10YKV-E (Cooling / Heating)		RAS-M13YKV-E (Cooling / Heating)
		High		(dB•A)	36 / 39		39 / 40
		Medium		(dB•A)	33 / 35		35 / 35
		Low		(dB•A)	30 / 30		30 / 30
	Outdoor	Unit model			RAS-M18YAV-E (Cooling / Heating)
		10-1	indoor unit operating	(dB•A)	42 / 45
		13-1	indoor unit operating	(dB•A)	46 / 49
		2	indoor unit operating	(dB•A)	46 / 49
Indoor unit	Unit model				RAS-M10YKV-E		RAS-M13YKV-E
	Dimension	Height		(mm)	265		265
		Width		(mm)	790		790
		Depth		(mm)	189		189
	Net weight			(kg)	8		8
	Fan motor output			(W)	19		19
	Air flow rate (Cooling/Heating)			(m3/h)	470 / 520		520 / 560
Outdoor unit	Unit model				RAS-M18YAV-E
	Dimension	Height		(mm)	550
		Width		(mm)	780
		Depth		(mm)	270
	Net weight			(kg)	44
	Compressor	Motor output		(W)	1100
		Type			Twin rotary type with DC-inverter variable speed control
		Model			DA130A1F-21F
	Fan motor output			(W)	40
	Air flow rate			(m3/h)	2060
Piping connection	Type				Flare connection
	Indoor unit	Unit model			RAS-M10YKV-E		RAS-M13YKV-E
		Liquid side			Ø6,35		Ø6,35
		Gas side			Ø9,52		Ø9,52
	Outdoor unit	Unit model			RAS-M18YAV-E
		A unit liquid side/gas side			Ø6,35 /		Ø9,52
		B unit liquid side/gas side			Ø6,35 /		Ø9,52
	Maximum length (per unit)			(m)	20
	Maximum length (total)			(m)	30
	Maximum chargeless length			(m)	30
	Maximum height difference			(m)	10
Refrigerant	Name of refrigerant				R410A
	Weight			(kg)	1,15
Wiring connection		Power supply			3 Wires : includes earth
		Interconnection			4 Wires : includes earth
Usable temperature range		Indoor (Cooling/Heating)		(°C)	21 – 32 / 0 – 28
		Outdoor (Cooling/Heating)		(°C)	21 – 43 / –5 – 21
Accessory	Indoor unit	Installation plate			1
		Wireless remote control			1
		Label			2
		Remote control holder			1
		Pan head wood screw			2 (Ø3,1 x 16L)
		Purifying filter			1
		Deodorizing filter			1
		Batteries			2
		Mounting screw			6 (Ø4 x 25L)
		Installation manual			1
	Outdoor unit	Installation manual			1
		Owner's manual			1

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

•The specifications may be subject to change without notice for purpose of improvement.

–3 –

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

Unit model	Indoor				RAS-M10YKCV-E, RAS-M13YKCV-E
	Outdoor				RAS-M18YACV-E
Cooling capacity				(kW)	5,2
Cooling capacity range				(kW)	1,4 – 6,2
Power supply					220 – 230 – 240V – 1Ph – 50 Hz
Electric	Indoor	Unit model			RAS-M10YKCV-E		RAS-M13YKCV-E
characteristics		Running current		(A)	0,15		0,15
		Power consumption		(W)	30		30
		Power factor		(%)	87		87
	Outdoor	Unit model			RAS-M18YACV-E
		Running current		(A)	7,90 / 7,57 / 7,28
		Power consumption		(W)	1660
		Power factor		(%)	95%
		Starting current		(A)	8,20 / 7,87 / 7,58
COP					3,02
Operating noise	Indoor	Unit model			RAS-M10YKCV-E		RAS-M13YKCV-E
		High		(dB•A)	36		39
		Medium		(dB•A)	33		35
		Low		(dB•A)	30		30
	Outdoor	Unit model			RAS-M18YACV-E
		10-1	indoor unit operating	(dB•A)	42
		13-1	indoor unit operating	(dB•A)	46
		2	indoor unit operating	(dB•A)	46
Indoor unit	Unit model				RAS-M10YKCV-E		RAS-M13YKCV-E
	Dimension	Height		(mm)	265		265
		Width		(mm)	790		790
		Depth		(mm)	189		189
	Net weight			(kg)	8		8
	Fan motor output			(W)	19		19
	Air flow rate			(m3/h)	470		520
Outdoor unit	Unit model				RAS-M18YACV-E
	Dimension	Height		(mm)	550
		Width		(mm)	780
		Depth		(mm)	270
	Net weight			(kg)	42
	Compressor	Motor output		(W)	1100
		Type			Twin rotary type with DC-inverter variable speed control
		Model			DA130A1F-21F
	Fan motor output			(W)	40
	Air flow rate			(m3/h)	2060
Piping connection	Type				Flare connection
	Indoor unit	Unit model			RAS-M10YKCV-E		RAS-M13YKCV-E
		Liquid side			Ø6,35		Ø6,35
		Gas side			Ø9,52		Ø9,52
	Outdoor unit	Unit model			RAS-M18YACV-E
		A unit liquid side/gas side			Ø6,35 /		Ø9,52
		B unit liquid side/gas side			Ø6,35 /		Ø9,52
	Maximum length (per unit)			(m)	20
	Maximum length (total)			(m)	30
	Maximum chargeless length			(m)	30
	Maximum height difference			(m)	10
Refrigerant	Name of refrigerant				R410A
	Weight			(kg)	1,15
Wiring connection		Power supply			3 Wires : includes earth
		Interconnection			4 Wires : includes earth
Usable temperature range		Indoor		(°C)	21 – 32
		Outdoor		(°C)	21 – 43
Accessory	Indoor unit	Installation plate			1
		Wireless remote control			1
		Label			2
		Remote control holder			1
		Pan head wood screw			2 (Ø3,1 x 16L)
		Purifying filter			1
		Deodorizing filter			1
		Batteries			2
		Mounting screw			6 (Ø4 x 25L)
		Installation manual			1
	Outdoor unit	Installation manual			1
		Owner's manual			1

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

•The specifications may be subject to change without notice for purpose of improvement.

–4 –

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

<Cooling>

	Volts	Operation	Operating		Unit capacity		Cooling	Running	Power	Outdoor
			indoor unit		(kW)		capacity	current	consumption	operating noise
		status
	V		A	B	A	B	kW	A	W	dB
			10	—	2,7	—	2,7	4,13	770	42
		1 unit					(1,1 to 3,2)	(1,65 to 4,99)	(255 to 930)
			13	—	3,7	—	3,7	6,58	1240	46
	220						(1,1 to 4,2)	(1,65 to 7,25)	(255 to 1430)
			10	10	2,55	2,55	5,1	8,14	1700	46
		2 units					(1,4 to 6,1)	(1,68 to 10,29)	(260 to 2150)
			13	10	3,01	2,19	5,2	8,20	1720	46
							(1,4 to 6,2)	(1,68 to 10,38)	(260 to 2170)
			10	—	2,7	—	2,7	3,95	770	42
		1 unit					(1,1 to 3,2)	(1,59 to 4,78)	(255 to 930)
			13	—	3,7	—	3,7	6,30	1240	46
	230						(1,1 to 4,2)	(1,59 to 6,94)	(255 to 1430)
			10	10	2,55	2,55	5,1	7,78	1700	46
		2 units					(1,4 to 6,1)	(1,62 to 9,84)	(260 to 2150)
			13	10	3,01	2,19	5,2	7,87	1720	46
							(1,4 to 6.2)	(1,62 to 9,93)	(260 to 2170)
			10	—	2,7	—	2,7	3,79	770	42
		1 unit					(1,1 to 3,2)	(1,52 to 4,58)	(255 to 930)
			13	—	3,7	—	3,7	6,03	1240	46
	240						(1,1 to 4,2)	(1,52 to 6,65)	(255 to 1430)
			10	10	2,55	2,55	5,1	7,46	1700	46
		2 units					(1,4 to 6,1)	(1,55 to 9,43)	(260 to 2150)
			13	10	3,01	2,19	5,2	7,58	1720	46
							(1,4 to 6,2)	(1,55 to 9,52)	(260 to 2170)

<Heating>

Volts	Operation	Operating		Unit capacity			Heating		Running		Power	Outdoor
		indoor unit		(kW)			capacity		current		consumption	operating noise
	status
V		A	B	A	B		kW		A		W	dB
		10	—	4,0	—		4,0		6,94		1450	45
	1 unit						(0,7 to 5,2)		(1,10 to 8,13)		(170 to 1700)
		13	—	5,0	—		5,0		9,86		2060	49
220							(0,7 to 6,5)		(1,10 to 12,11)		(170 to 2530)
		10	10	3,2	3,2		6,4		8,47		1770	49
	2 units						(0,9 to 8,3)		(1,10 to 11,43)		(170 to 2390)
		13	10	3,72	2,98		6,7		8,85		1850	49
							(0,9 to 8,7)		(1,10 to 11,72)		(170 to 2450)
		10	—	4,0	—		4,0		6,64		1450	45
	1 unit						(0,7 to 5,2)		(1,06 to 7,78)		(170 to 1700)
		13	—	5,0	—		5,0		9,43		2060	49
230							(0,7 to 6,5)		(1,06 to 11,58)		(170 to 2530)
		10	10	3,2	3,2		6,4		8,10		1770	49
	2 units						(0,9 to 8,3)		(1,06 to 10,94)		(170 to 2390)
		13	10	3,72	2,98		6,7		8,47		1850	49
							(0,9 to 8,7)		(1,06 to 11,21)		(170 to 2450)
		10	—	4,0	—		4,0		6,36		1450	45
	1 unit						(0,7 to 5,2)		(1,01 to 7,46)		(170 to 1700)
		13	—	5,0	—		5,0		9,04		2060	49
240							(0,7 to 6,5)		(1,01 to 11,10)		(170 to 2530)
		10	10	3,2	3,2		6,4		7,76		1770	49
	2 units						(0,9 to 8,3)		(1,01 to 10,48)		(170 to 2390)
		13	10	3,72	2,98		6,7		8,11		1850	49
							(0,9 to 8,7)		(1,01 to 10,75)		(170 to 2450)
• 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>

	10
	9
	8
	7
(A)	6
Current	5
	4
	3					• Conditions
						Indoor : DB 27˚C/WB 19˚C
	2					Outdoor : DB 35˚C
						Air flow : High
	1					Pipe length : 5m x 2
						2 units operating
						230V
	0
			10	20	30	40	50	60	70	80	90	100
	0

<Heating>

	12
	10
	8
(A)
Current	6
	4
					• Conditions
					Indoor : DB 20˚C
					Outdoor : DB 7˚C/WB 6˚C
	2				Air flow : High
					Pipe length : 5m x 2
					2 units operating
					230V
	0
			20	40	60	80	100	120	140
	0

Compressor speed (rps)

Compressor speed (rps)

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

Capacity ratio (%)

115
		• Conditions
110		Indoor : DB27˚C
		Outdoor : DB35˚C
		Indoor air flow : High
		Pipe length 5m×2
105		2 units operating
100
95
90
85
0
		16	18	20	22	24
14

Indoor air wet bulb temp. (˚C)

Capacity ratio (%)

105
		Current Limited Start
100
95
90
85
80
75
70
65
60		• Conditions
		Indoor : DB27˚C/WB19˚C
		Indoor air flow : High
55		Pipe length 5m×2
		2 units operating

50

32 33 34 35 36 37 38 39 40 41 42 43

Outdoor temp. (˚C)

* Capacity ratio : 100% = 5,2 kW

– 6 –

1-3.	Electrical Data
<Cooling>
Combination						System					Compressor		Fan motor FLA
of indoor unit					Voltage range			Power supply
operation
				Volts-
			Hz							MOCP
				Ph.	Min.	Max.		MCA	ICF		MSC	RLA	Indoor	Outdoor
A		B								(Amps)
10		—						5,81	5,81	15	4,13	4,13	0,15 x 1=0,15	0,50
13		—	50	230–1	198	264		8,51	8,51	15	6,29	6,29	0,15 x 1=0,15	0,50
10		10						12,10	12,10	15	9,04	9,04	0,15 x 2=0,30	0,50
13		10						12,21	12,21	15	9,13	9,13	0,15 x 2=0,30	0,50
<Heating>
Combination						System					Compressor		Fan motor FLA
of indoor unit					Voltage range			Power supply
operation
				Volts-
			Hz							MOCP
				Ph.	Min.	Max.		MCA	ICF		MSC	RLA	Indoor	Outdoor
A		B								(Amps)
10		—						9,56	9,56	15	7,13	7,13	0,15 x 1=0,15	0,50
13		—	50	230–1	198	264		14,31	14,31	15	10,93	10,93	0,15 x 1=0,15	0,50
10		10						13,47	13,47	15	10,14	10,14	0,15 x 2=0,30	0,50
13		10						13,81	13,81	15	10,41	10,41	0,15 x 2=0,30	0,50

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 inverter 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.

<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 layer.

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 existing 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. Conforming 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 for 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 level.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, 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 may 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 valve or capillary tube may become blocked 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 available on the market.

– 8 –

Table 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 socket 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 Tables 2-2-3 ~ 2-2- 6 below.

b)Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose diameter is larger than 20 mm. Thicknesses of socket joints are as shown in Table 2-2-2.

Table 2-2-2 Minimum thicknesses of socket joints

	Nominal diameter	Reference outer diameter of	Minimum joint thickness
		copper pipe jointed (mm)	(mm)
	1/4	6,35	0,50
	3/8	9,52	0,60
	1/2	12,70	0,70
	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, slowly 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 burrs 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.

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

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

Outer

A (mm)

Nominal

Thickness

diameter

Flare tool for

Conventional flare tool

diameter

(mm)

(mm)

R410A clutch type

Clutch type

Wing nut type

1/4

6,35

0,8

0 to 0,5

1,0 to 1,5

1,5 to 2,0

3/8

9,52

0,8

0 to 0,5

1,0 to 1,5

1,5 to 2,0

1/2

12,70

0,8

0 to 0,5

1,0 to 1,5

2,0 to 2,5

5/8

15,88

1,0

0 to 0,5

1,0 to 1,5

2,0 to 2,5

Table 2-2-4 Dimensions related to flare processing for R22

Outer

A (mm)

Nominal

Thickness

diameter

Flare tool for

Conventional flare tool

diameter

(mm)

(mm)

R22 clutch type

Clutch type

Wing nut type

1/4

6,35

0,8

0 to 0,5

0,5 to 1,0

1,0 to 1,5

3/8

9,52

0,8

0 to 0,5

0,5 to 1,0

1,0 to 1,5

1/2

12,70

0,8

0 to 0,5

0,5 to 1,0

1,5 to 2,0

5/8

15,88

1,0

0 to 0,5

0,5 to 1,0

1,5 to 2,0

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

Nominal

Outer diameter

Thickness

Dimension (mm)

Flare nut

width

diameter

(mm)

(mm)

A

B

C

D

(mm)

1/4

6,35

0,8

9,1

9,2

6,5

13

17

3/8

9,52

0,8

13,2

13,5

9,7

20

22

1/2

12,70

0,8

16,6

16,0

12,9

23

26

5/8

15,88

1,0

19,7

19,0

16,0

25

29

– 10 –

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

Nominal	Outer diameter		Thickness															Dimension (mm)												Flare nut
																														width
diameter	(mm)					(mm)										A		B	C										D	(mm)
1/4	6,35		0,8												9,0			9,2	6,5						13					17
3/8	9,52		0,8												13,0			13,5	9,7						20					22
1/2	12,70		0,8												16,2			16,0	12,9						20					24
5/8	15,88		1,0												19,4			19,0	16,0						23					27
3/4	19,05		1,0												23,3			24,0	19,2						34					36
			46˚
			~
		45˚
							B			A												C				D

				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.

When it is strong, the flare nut may crack and may be made non-removable. 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.

Table 2-2-7 Tightening torque of flare for R410A [Reference values]

	Nominal	Outer diameter	Tightening torque	Tightening torque of torque
				wrenches available on the market
	diameter	(mm)	N•m (kgf•cm)
				N•m (kgf•cm)
	1/4	6,35	14 to 18 (140 to 180)	16 (160), 18 (180)
	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 valve of the outdoor unit in the air conditioner using R410A is changed to prevent 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 following three types.

(1)Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

(2)Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

(3)Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive 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		Conventional air
				installation		conditioner installation
	No.	Used tool	Usage	Existence of	Whether	Whether new equip-
				new equipment	conventional	ment can be used with
				for R410A	equipment can	conventional refriger-
					be used	ant
	•	Flare tool	Pipe flaring	Yes	*(Note 1)	¡
	‚	Copper pipe gauge for	Flaring by
		adjusting projection	conventional flare	Yes	(Note 1)	(Note 1)
		margin	tool		*	*
	ƒ	Torque wrench	Connection of flare	Yes	X	X
		(For Ø12,7)	nut
	„	Gauge manifold	Evacuating, refriger-	Yes	X	X
			ant charge, run
	…	Charge hose
			check, etc.
	†	Vacuum pump adapter	Vacuum evacuating	Yes	X	¡
	‡	Electronic balance for	Refrigerant charge	Yes	X	¡
		refrigerant charging
	ˆ	Refrigerant cylinder	Refrigerant charge	Yes	X	X
	‰	Leakage detector	Gas leakage check	Yes	X	¡
	Š	Charging cylinder	Refrigerant charge	(Note 2)	X	X

(Note 1) When flaring is carried out for R410A using the conventional 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.

General tools (Conventional tools can be used.)

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

(1)	Vacuum pump	(4)	Reamer	(9)	Hole core drill (Ø65)
	Use vacuum pump by	(5)	Pipe bender	(10)	Hexagon wrench
	attaching vacuum pump adapter.	(6)	Level vial		(Opposite side 5mm)
(2)	Torque wrench (For Ø6,35)	(7)	Screwdriver (+, –)	(11)	Tape measure
(3)	Pipe cutter	(8)	Spanner or Monkey wrench	(12)	Metal saw

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

(1)	Clamp meter	(3)	Insulation resistance tester
(2)	Thermometer	(4)	Electroscope

– 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.

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.

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.

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.)

• Never charge refrigerant exceeding the specified amount.

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

ƒDo not carry out additional charging.

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)

(Liquid side)

(OUTDOOR unit)

Opened

(Gas side)

Refrigerant cylinder (With siphon pipe)

Check valve

Closed

Open/Close valve for charging

Service port

Electronic balance for refrigerant charging

Fig. 2-4-1 Configuration of refrigerant charging

– 13 –

• 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	Gauge manifold
OUTDOOR unit	OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

cylinder Refrigerant

Electronic

balance

Siphon

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.

Fig. 2-4-2

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.

•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 flow of brazing filler.

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

•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 temperature 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 brazing temperature is higher than 800°C.

•Activated flux

Most of fluxes generally used for silver brazing are this type.

It features an increased oxide film removing 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 brazing filler/flux

Piping	Used brazing	Used
material	filler	flux
Copper - Copper	Phosphor copper	Do not use
Copper - Iron	Silver	Paste flux
Iron - Iron	Silver	Vapor flux

• 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.

ƒWhen adding water to the flux, use water which does not contain chlorine (e.g. distilled water or ion-exchange water).

„ Remove the flux after brazing.

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 prevent the oxide 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.

ƒApply a seal onto the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow 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.

M Flow meter

Stop valve

Nitrogen gas cylinder

From Nitrogen cylinder

Pipe Nitrogen gas

Rubber plug

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

– 15 –

3. CONSTRUCTION VIEWS

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	189

,,,,,,@@@@@@€АААААА€€€€€

,,,,,,@@@@@@€АААААА€€€€€

	50
47	10

Knock out system

										47
									50	94
							790				Front panel
					232		326	Hanger	232		Back body
												47
												50
							321		Drain hose (0,54m)			10	Knock out system
	External				Connecting pipe (0,39m)			Hanger	Connecting pipe (0,49m)
	length reference
						(Flare ø9,52)			(Flare ø6,35)
				65,5			659			65,5	Hanger
							450
			Hanger				344				For stud bolt
							326				(ø8~ø10)
	46	26	20	2,5		moreor66				20
							Minimum				For stud bolt
							distance				(ø6)
							to ceiling
				Minimum						20	Minimum
265	178,5		17	distance							distance to wall
				to wall
				120 or more						120 or more			Wireless		136
										37			remote control
	37	3,5			Hanger	Installation		Hanger			40,5
									60,5						16
				10,5		plate outline		Center line						55
				76		319		269	126
							790
								– 16 –

3-2. Outdoor Unit

RAS-M18YAV-E	A leg part	600
		ø25 drain hole
RAS-M18YACV-E		115
310 bolt long holepitch)	296 hole pitch) 270	76
(Anchor	(ø6
	B leg part	16

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

	90	ø11 × 17U-shape hole
50
		(For ø8-ø10 anchor bolt)

8-ø6 hole

(For fixing outdoor unit)

ø11 × 17 long hole

(For ø8-ø10 anchor bolt)

49,5	147	21	Fan guard
			115,5

Hanger

540

550

8	780

Connecting pipe port

(Pipe dia.ø6,35)

	Connecting pipe port
	(Pipe dia.ø9,52)			Z	view
	Mounting dimensions of anchor bolt
			600
4 × ø11 × 17U-shape hole
(For ø8-ø10 anchor bolt)		more			A
	or50		D	Intake
	Intake				250 or more
310	C 100 or			Outside line	(Minimum distance
	more
				of product	from wall)
	200 or more
			Outlet	4 × ø11 × 17 long hole
			B	(For ø8-ø10 anchor bolt)

Valve cover

157

59

21

	Charging	53	Z
		53
	port
		53
			96,2
		122,8
61		332

Earth terminal

Detailed A leg part
			600
		50
		36	R15
		11
			Outside line
			of product
310	296	R5,5	2-ø6 hole
			2-ø6 hole
310	296	11

Outside line of product

36 R15

50

600	R5,5

Detailed B leg part

– 17 –

4. WIRING DIAGRAM

FAN MOTOR

4-1. Indoor Unit										LOUVER
RAS-M10YKV-E, RAS-M13YKV-E
										MOTOR										DC MOTOR
RAS-M10YKCV-E, RAS-M13YKCV-E
													BLU	PNK	YEL	ORN	RED	BRW
													6	5	4	3	2	1	5	4	3	2	1
													6	5	4	3	2	1	5	4	3	2	1
				R109										CN07				5		CN10			6
			BLK	VARISTOR					R116
											IC04
			P04			J04
				SG01 DSA
													L01
				T6,3A 250V											R01
				F01 FUSE														DB01		TO1
						R21																	DC35V
				3
	INDOOR
																							DC12V
	TERMINAL										C15		C01					C02
	BLOCK
	2																						DC7V
	1 BLK		CN30																				DC0V
	2	WHI										MAIN P.C. BOARD
																			C06
	3	RED											(MCC-772)										IC02
		GRN & YEL
				CN23															IC
							CN13				4					CN03			IC01
OUTDOOR INDOOR																				CN01
					1	2	3	4	5	6	7	8	9			1	2			1	2
UNIT	UNIT
					BLU	BLU	BLU	BLU	BLU	BLU	PNK	BLK	WHI			1	2			1	2
																BLK	BLK			BLK	BLK
				1	1	2	3	4	5	6	7	8	9										HEAT
					1 2 3 4 5 6 7 8 9 CN25
																		THERMO				EXCHANGER
					INFRARED RAYS RECEIVE													SENSOR					SENSOR
					AND INDICATION PARTS													(TA)					(TC)

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

Check items		Diagnosis result
OPERATION		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
indicator		outlet. (Check the primary and secondary voltage of transformer.)
Terminal		Check for power supply voltage between • – ‚. (Refer to the name
		plate.) (Check the primary and secondary voltage of transformer.)
block
		Check for fluctuate voltage between ‚ – ƒ. (DC 15 to 60V)
Fuse		Check to determine if the fuse is open.
6,3A		(Check Varistor : R109, R21)
DC 5V		Check for voltage at the pink lead of the infrared rays receive parts.
		(Check the transformer and the rated voltage power supply circuit.)
DC 12V		Check for voltage at the •ƒ lead of louver motor.
		(Check the transformer and the rated voltage power supply circuit.)
DC 35V		Check for voltage at the CN10 connector side point.
		(Check the transformer and the rated voltage power supply circuit.)
For detailed diagnostic procedure, refer to the service data.
DSA : Surge Absorber

COLOR

IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE

GRN : GREEN & &YEL YELLOW

– 18 –

4-2. Outdoor Unit

RAS-M18YAV-E

FAN MOTOR

REACTOR

		4 way					FM
		valve
			1	2	GRY PNK	YEL	RED WHI BLK
		3 2 1	1	2	5 4 3 2 1		1 2 3
		3 2 1			5 4 3 2 1		1 2 3
		CN701	P08	P07	CN301		CN300	P06
					RELAY
					RY04
		P09			CT
ORN		P10
		POWER RELAY		C13	C15
CONVERTER MODULE	G					F04
	E					F03
						FUSE
	A
		ELECTRONIC				15A
	~	STARTER
	–	L01 C12 C14				FUSE
	~
DB01						3,15A

+P19

	YEL	P20	RELAY
		+	RY06
		BU
		EU
	MODULE	BV
		EV
		BW
	IGBT	EW
		BX
		BY
		BZ
	Q200	–
	BLU	P18	P.C. BOARD
			MCC-758
		P17

	POWER	To	To
	SUPPLY	INDOOR	INDOOR
	220–230–240V~ UNIT		UNIT
	50/60Hz	A	B
	~ ~ ~	~ ~ ~ ~	~ ~ ~ ~
	L N	1 2 3	1 2 3
			THERMOSTAT for COMPRESSOR
			CN01 1	TE
				1
BLK	WHI BLK		WHI 2 2

SURGE		REACTOR			ORN
ABSORBER								P04	CN08 1		1
F01					RED			P05	WHI 2		2
					WHI
								P06					TD
FUSE										1	1
25A									CN02
		BRW		BRW					WHI	2	2
VARISTOR	1					1 1				3	3
CN704	2	RED		RED		2 2		CN15					TO
		ORN		ORN
	3	YEL		YEL		3 3			CN03 1		1
	4					4	4	F01	WHI 2		2
L03								FUSE 6,3A					TS
	1	1			BLK			P02	CN04 1		1
CN501												BLK
	3	3							BLK 2		2
					GRY			P01
													TGa
P11	YEL
									CN05	1	1
		1 1								2	2	YEL
P12		2 2		REACTOR					YEL	3	3
	YEL
P13		PUR						PHOTO		6	6	GRY
								COUPLER		5	5	RED
	P14								CN14	4	4	BLU	P.M.V.
										3	3	ORN	A UNIT
								SUB		2	2	YEL
												WHI
										1	1
								P.C. BOARD
								MCC-775		6	6	GRY
										5	5	RED
									CN13	4	4	BLU	P.M.V.
										3	3	ORN	B UNIT
										2	2	YEL
												WHI
										1	1
P21	RED		1	1
P22	WHI					CM		COMPRESSOR
			2 2
P23	BLK
			3	3

COLOR IDENTIFICATION

BLK	: BLACK	WHI	: WHITE
BLU	: BLUE	BRW	: BROWN
ORN	: ORANGE	RED	: RED
GRY	: GRAY	YEL	: YELLOW
PNK	: PINK	PUR : PURPLE
SKB	: SKY-BLUE

P.M.V. : PULSE MODULATING VALVE

– 19 –

RAS-M18YACV-E

	POWER	To	To
	SUPPLY	INDOOR	INDOOR
	220–230–240V~ UNIT		UNIT
FAN MOTOR	50/60Hz	A	B

							FM				~ ~ ~	~ ~ ~ ~	~ ~ ~ ~
REACTOR											L N	1 2 3	1 2 3
1	2	GRY PNK			YEL		RED WHI BLK
1	2	5	4	3	2	1	1	2	3
3 2 1										BLK	WHI BLK		THERMOSTAT for COMPRESSOR
		5	4	3	2	1	1	2	3

CN701

P08

P07

CN301

CN300

P06

SURGE

REACTOR

ORN

ABSORBER

P04

CN08 1

1

P.C. BOARD

F01

RED

P05

WHI 2

2

WHI

MCC-758

P06

TD

FUSE

1

1

25A

CN02

CT

BRW

BRW

WHI

2

2

P09

VARISTOR

1

1 1

3

3

CN704

2

RED

RED

2 2

CN15

TO

ORN

P10

ORN

ORN

CN03 1

3

YEL

YEL

3 3

1

4

4

4

F01

WHI 2

2

POWER RELAY

C13

C15

L03

FUSE 6,3A

TS

1

1

BLK

P02

CN04 1

1

G

CN501

BLK

CONVERTER MODULE

BLK 2

2

–

L01

C12

C14

FUSE

P12

YEL

E

F03

3

3

GRY

P01

FUSE

TGa

A

ELECTRONIC

15A

P11

YEL

CN05

1

1

~

STARTER

1 1

2

2

YEL

F04

2 2

REACTOR

YEL

3

3

DB01

~

3,15A

P13

PHOTO

6

6

GRY

+

P19

PUR

COUPLER

5

5

RED

YEL

P20

RELAY

P14

4

4

BLU

P.M.V.

CN14 3

3

ORN

A UNIT

+

RY06

SUB

2

2

YEL

WHI

BU

1

1

P.C. BOARD

EU

MCC-775

6

6

GRY

MODULE

BV

5

5

RED

P.M.V.

1

1

WHI

EV

4

4

BLU

CN13 3

3

ORN

B UNIT

BW

2

2

YEL

IGBT

EW

BX

BY

BZ

Q200

–

P21

RED

1

1

P22

WHI

CM

COMPRESSOR

BLU

P18

2 2

P23

BLK

3

3

P17

COLOR IDENTIFICATION

BLK : BLACK

BLU : BLUE ORN : ORANGE GRY : GRAY PNK : PINK SKB : SKY-BLUE

WHI : WHITE BRW : BROWN RED : RED YEL : YELLOW PUR : PURPLE

P.M.V. : PULSE MODULATING VALVE

– 20 –

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	TMP87PM40AF or
			TMP87CM40AF
	5	Heat exchanger temp. sensor	( – )	10kΩ at 25°C
		(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)		L03	SC-15-S06J		15A, 0,6mH
			L01	SC-20-01J		20A, 150µH
2	DC-DC transformer			SWT-43		Primary side DC280V
						Secondary side
						7,5V x 1, 13V x 1, 26,5V x 3, 16V x 1, 15V x 1
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		Coil DC12V
						Contact AC125V, 3A
7	Suction temp. sensor			(Inverter attached)		10kΩ (25°C)
	(TS sensor)
8	Discharge temp. sensor			(Inverter attached)		62kΩ (20°C)
	(TD sensor)
9	Outside air temp. sensor			(Inverter attached)		10kΩ (25°C)
	(TO sensor)
10	Temp. sensor at A room			(Inverter attached)		RAS-M18YACV-E .......... 10kΩ (25°C)
	gas side (TGa sensor)					RAS-M18YAV-E ............. 62kΩ (20°C)
11	Terminal block (9P)			———	20A, AC250V
12	Terminal block (3P)			———	20A, AC250V
				For protection of		3,15A, AC250V
				switching power source
13	Fuse			For protection of transistor		15A, AC250V
				module breakage
				For protection of		25A, AC250V
				inverter input overcurrent
14	Electrolytic capacitor			LLQ2G501KHUATF		500µF, DC400V X 4 pieces
				400LISN500K35F
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
19	Heat exchanger temp. sensor			(Inverter attached)		10kΩ at 25°C
	(TE-sensor) (H/P only)

– 21 –

6. REFRIGERANT CYCLE DIAGRAM

6-1. Refrigerant Cycle Diagram

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

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

Temp. measurement T2

INDOOR UNIT	T1	Temp. measurement
Indoor heat	To B room
exchanger		heightAllowable	10m:difference	lengthpipeAllowable
Cross flow fan					Per 1 unit
Deoxidized copper pipe					Max. : 20m
					Total : 30m
Both A and B rooms
Outer dia. : 6,35mm
Thickness : 0,8mm
Sectional shape
of heat insulator

Muffler		Strainer		Strainer
Ø25 x 80
TGa				Capillary
				Ø2,2 x 200
Muffler
Ø25 x 80				Pulse modulating
Muffler				valve at liquid side
				(SEV15RC2)
Ø25 x 160
TD
Compressor
DA130A1F-21F
Outdoor heat	Split capillary
exchanger
		Ø1,5 x 200
		Ø1,5 x 200
		TE
Propeller fan				Refrigerant amount : 1,15kg
OUTDOOR UNIT			NOTE :	Gas leak check position
				Refrigerant flow (Cooling)
				Refrigerant flow (Heating)

Table 6-1-1

	Total length in two rooms	Each length in one room		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
	INDOOR UNIT	T1	Temp. measurement
To B room	Indoor heat	To B room
	exchanger		heightAllowable	10m:difference	lengthpipeAllowable
	Cross flow fan					Per 1 unit
P Pressure measurement	Deoxidized copper pipe					Max. : 20m
						Total : 30m
	Both A and B rooms
Gauge attaching port
	Outer dia. : 6,35mm
Vacuum pump connecting port	Thickness : 0,8mm
Deoxidized copper pipe	Sectional shape
	of heat insulator
Both A and B rooms
Outer dia. : 9,52mm
Thickness : 0,8mm

Muffler		Strainer
Ø25 x 80
		TGa
	Muffler	Capillary
	Ø25 x 80
		Ø2,2 x 200

					Pulse modulating
	TD				valve at liquid side
Accumulating tank					(SEV15RC2)
	Compressor
Ø51 x 200
(290cc)	DA130A1F-21F
TS
	Outdoor heat	Split capillary
	exchanger
			Ø1,5 x 200
Temp. measurement	T2		Ø1,5 x 200
			TE
	Propeller fan				Refrigerant amount : 1,15kg
	OUTDOOR UNIT			NOTE :	Gas leak check position
					Refrigerant flow
	Table 6-1-2
Total length in two rooms	Each length in one room			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		No. of	Operating combination		Standard	Heat exchanger		Indoor	Outdoor	Compressor
condition (°C)		operating	(Unit)		pressure	pipe temp.		fan	fan	revolution
Indoor	Outdoor	units	A	B	P (MPa)	T1 (°C)	T2 (°C)	mode	mode	(rps)
			M13YKCV-E		0,7 to 0,9	9 to 11	46 to 48	High	High	62
			M13YKV-E
		1 unit
				M10YKCV-E	0,9 to 1,1	11 to 13	45 to 47	High	MED.	38
27/19	35/–			M10YKV-E
			M13YKCV-E	M10YKCV-E	0,8 to 1,0	11 to 13	50 to 52	High	High	74
		2 units	M13YKV-E	M10YKV-E
			M10YKCV-E	M10YKCV-E	0,8 to 1,0	10 to 12	50 to 52	High	High	74
			M10YKV-E	M10YKV-E

<Heating>

	Temperature		No. of	Operating combination		Standard	Heat exchanger		Indoor	Outdoor	Compressor
	condition (°C)		operating	(Unit)		pressure	pipe temp.		fan	fan	revolution
	Indoor	Outdoor	units	A	B	P (MPa)	T1 (°C)	T2 (°C)	mode	mode	(rps)
			1 unit	M13YKV-E		3,5 to 3,7	53 to 55	0 to 2	High	High	79
	20/–	7/6			M10YKV-E	3,3 to 3,5	48 to 50	0 to 2	High	MED.	63
			2 units	M13YKV-E	M10YKV-E	2,5 to 2,7	41 to 43	–2 to 0	High	High	97
				M10YKV-E	M10YKV-E	2,5 to 2,7	41 to 43	–2 to 0	High	High	97

NOTES :

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

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

– 24 –

7. CONTROL BLOCK DIAGRAM

7-1. Indoor Unit

Indoor Unit Control Panel

M.C.U

Heat Exchanger Sensor

Functions

Operation

Display

Temperature Sensor

• Louver Control

Timer

Infrared Rays Signal Receiver

• 3-minute Delay at Restart for Compressor

Display

Infrared

Initializing Circuit

• Motor Revolution Control

ECONO.

Sign Display

Rays

Clock Frequency

• Processing

Oscillator Circuit

(Temperature Processing)

FAN-ONLY

• Timer

Sign Display

• Serial Signal Communication

Indoor

Fan Motor

Power Supply

Remote

Circuit

Louver ON/OFF Signal

Control

Louver

Noise Filter

Louver Driver

Motor

Serial Signal Transmitter/Receiver

From Outdoor Unit

Serial Signal Communication

REMOTE CONTROL

RAS-M10YKV-E, RAS-M13YKV-E

RAS-M10YKCV-E, RAS-M13YKCV-E

(Heat pump model)

(Cooling only model)

Infrared

Infrared

Rays

Rays

Remote Control

Remote Control

Operation (START/STOP)

Operation (START/STOP)

Operation Mode Selection

Operation Mode Selection

AUTO, COOL, DRY, HEAT

AUTO, COOL, DRY, FAN ONLY

Thermo. Setting

Thermo. Setting

Fan Speed Selection

Fan Speed Selection

ON TIMER Setting

ON TIMER Setting

OFF TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver AUTO Swing

Louver Direction Setting

Louver Direction Setting

ECONO.

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)

A unit

B unit

M.C.U

Rotor position

send/receive

send/receive

detect circuit

circuit

circuit

PWM synthesis function

•

Rotor position

•

Input current release control

detect circuit

•

IGBT over-current detect control

•

Outdoor fan control

Gate drive

•

High power factor correction control

circuit

Outdoor Heat-

exchanger

M.C.U

• Signal communication to MCU

Over current

26 –

temp.sensor

detect circuit

Discharge

•

Inverter output frequency control

–

temp. sensor

•

A/D converter function

Suction temp.

•

P.M.V. control

sensor

•

Discharge temp. control

High power factor

Over current

Gate drive

correction circuit

detect circuit

circuit

Gas side pipe

•

Error display

temp. sensor

Outdoor air

• Signal communication to MCU

Noise

Input current

Converter

Over current

Inverter

Outdoor

temp. sensor

filter

Sensor

(AC

DC)

sensor

(DC

AC)

fan motor

Driver circuit of P.M.V.

Relay

RY04

A unit

B unit

Over current

Inverter

Compressor

P.M.V.

P.M.V.

sensor

(DC

AC)

P.M.V. : Pulse Modulating Valve
PWM	: Pulse Width Modulation
IGBT	: Insulated Gate Bipolar Transistor	4 way valve