Toshiba RAS-10SAVR-E, RAS-16SKV-E, RAS-16SAVR-E, RAS-13SKV-E, RAS-10SKVR-E SERVICE MANUAL

FILE NO. SVM-07036-1

SERVICE MANUAL

	SPLIT TYPE
Indoor Unit	Outdoor Unit
<High Wall, Heat Pump Type>	<Heat Pump Type>

RAS-13SKV-E RAS-16SKV-E RAS-10SKVR-E RAS-13SKVR-E RAS-16SKVR-E

RAS-13SAV-E RAS-16SAV-E RAS-10SAVR-E RAS-13SAVR-E RAS-16SAVR-E

R410A

Revised March, 2007

CONTENTS

1.	SAFETY PRECAUTIONS ..........................................................................	3
2.	SPECIFICATIONS .....................................................................................	5
3.	REFRIGERANT R410A .............................................................................	7
4.	CONSTRUCTION VIEWS ........................................................................	15
5.	WIRING DIAGRAM ..................................................................................	18
6.	SPECIFICATIONS OF ELECTRICAL PARTS .........................................	20
7.	REFRIGERANT CYCLE DIAGRAM ........................................................	21
8.	CONTROL BLOCK DIAGRAM ................................................................	25
9.	OPERATION DESCRIPTION ...................................................................	28
10.	INSTALLATION PROCEDURE ................................................................	56
11.	HOW TO DIAGNOSE THE TROUBLE ......................................................	69
12.	HOW TO REPLACE THE MAIN PARTS ...................................................	92
13.	EXPLODED VIEWS AND PARTS LIST .................................................	110

– 2 –

Revised-1

1. SAFETY PRECAUTIONS

For general public use

Power supply cord of outdoor unit shall be more than 1.5 mm2 (H07RN-F or 60245IEC66) polychloroprene sheathed flexible cord.

•Read this “SAFETY PRECAUTIONS” carefully before servicing.

•The precautions described below include the important items regarding safety. Observe them without fail.

•After the servicing work, perform a trial operation to check for any problem.

•Turn off the main power supply switch (or breaker) before the unit maintenance.

CAUTION

New Refrigerant Air Conditioner Installation

•THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into the new type refrigerant R410A air conditioner circuit.

To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging port on main unit and installation tools are different from those used for the conventional refrigerant units.

Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings and possible impurities in existing piping.

CAUTION

TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY

This appliance must be connected to the main power supply by a circuit breaker or a switch with a contact separation of at least 3 mm.

DANGER

•ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO INSTALL/MAINTAIN THE AIR CONDITIONER.

INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.

•TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

DANGER: HIGH VOLTAGE

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts on the P.C. board by hand.

•CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCORRECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.

•CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

–3 –

•DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

•TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTORS, FURNACE, STOVES, ETC.

•WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CAREFUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PERSONNEL INJURIES.

•IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE WORK AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY RESULT.

WARNING

•Never modify this unit by removing any of the safety guards or bypass any of the safety interlock switches.

•Do not install in a place which cannot bear the weight of the unit. Personal injury and property damage can result if the unit falls.

•After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas may generate.

•The electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air conditioner uses an exclusive circuit.

An insufficient circuit capacity or inappropriate installation may cause fire.

•When wiring, use the specified cables and connect the terminals securely to prevent external forces applied to the cable from affecting the terminals.

•Be sure to provide grounding.

Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.

•Conform to the regulations of the local electric company when wiring the power supply.

Inappropriate grounding may cause electric shock.

CAUTION

•Exposure of unit to water or other moisture before installation may result in an electrical short. Do not store in a wet basement or expose to rain or water.

•Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify the noise level of the unit or where noise or discharged air might disturb neighbors.

•To avoid personal injury, be careful when handling parts with sharp edges.

•Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

For Reference:

If a heating operation would be continuously performed for a long time under the condition that the outdoor temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate, resulting in a trouble of the cabinet or fan.

It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.

For details, contact the dealer.

– 4 –

Revised-1

2. SPECIFICATIONS

2-1. Specifications

Unit model

Indoor

RAS-10SKVR-E

RAS-13SKV-E

Outdoor

RAS-10SAVR-E

RAS-13SAV-E

Cooling capacity

(kW)

2.5

3.5

Cooling capacity range

(kW)

1.1-3.1

1.1-4.0

Heating capacity

(kW)

3.2

4.2

Heating capacity range

(kW)

0.9-4.8

0.9-5.0

Power supply

1Ph/50Hz/220-240V

Electric

Indoor

Operation mode

Cooling

Heating

Cooling

Heating

characteristic

Running current

(A)

0.21-0.19

0.24-0.22

0.21-0.19

0.24-0.22

Power consumption

(W)

35

40

35

40

Power factor

(%)

75

75

75

75

Outdoor

Operation mode

Cooling

Heating

Cooling

Heating

Running current

(A)

2.81-2.58

3.43-3.14

4.85-4.45

5.11-4.68

Power consumption

(W)

563

710

1035

1090

Power factor

(%)

91

94

97

97

Starting current

(A)

3.67-3.36

5.35-4.90

COP

4.18/4.27

3.27/3.72

Operating

Indoor

High

(Cooling/Heating)

(dB-A)

38/39

39/40

noise

Medium

(Cooling/Heating)

(dB-A)

33/34

33/34

Low

(Cooling/Heating)

(dB-A)

26/28

26/28

Outdoor

(Cooling/Heating)

(dB-A)

46/47

48/50

Indoor unit

Unit model

RAS-10SKVR-E

RAS-13SKV-E

Dimension

Height

(mm)

275

275

Width

(mm)

790

790

Depth

(mm)

205

205

Net weight

(kg)

9

9

Fan motor output

(W)

20

20

Air flow rate

(Cooling/Heating)

(m3/min)

8.6/9.5

9.4/10.5

Outdoor unit

Unit model

RAS-10SAVR-E

RAS-13SAV-E

Dimension

Height

(mm)

550

550

Width

(mm)

780

780

Depth

(mm)

290

290

Net weight

(kg)

35

35

Compressor

Motor output

(W)

750

750

Type

Single rotary type with DC-inverter variablespeed control

Model

DA89X1C-23FZ

DA89X1C-23FZ

Fan motor output

(W)

43

Air flow rate

(Cooling/Heating)

(m3/min)

30/30

35/35

Piping

Type

Flare connection

Flare connection

connection

Indoor unit

Liquid side

(mm)

φ6.35

φ6.35

Gas side

(mm)

φ9.52

φ9.52

Outdoor unit

Liquid side

(mm)

φ6.35

φ6.35

Gas side

(mm)

φ9.52

φ9.52

Maximum length

(m)

20

20

Maximum chargeless length

(m)

15

15

Maximum height difference

(m)

10

10

Refrigerant

Name of refrigerant

R410A

R410A

Weight

(kg)

0.80

0.80

Wiring

Power supply

3Wires:includes earth (Outdoor)

connection

Interconnection

4Wires:includes earth

Usable temperature range

Indoor

(Cooling/Heating)

( )

21-32/0-28

21-32/0-28

Outdoor

(Cooling/Heating)

( )

-10-46/-15-24

-10-46/-15-24

Accessory

Indoor unit

Installation plate

1

1

Wireless remote controller

1

1

Batteries

2

2

Remote controller holder

1

1

Super Oxi Deo filter

1

1

Super Sterilizer filter

-

1

Mounting screw

6 (φ4 x 25L)

6 (φ4 x 25L)

Remote controller holder

2 (φ3.1 x 16L)

2 (φ3.1 x 16L)

Pan head wood screw

Plasma air purifier

1

-

Installation manual

1

1

Owner's manual

1

1

Outdoor unit

Drain nipple

1

1

Water proof rubber cap

2

2

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

– 5 –

Revised-1

Unit model

Indoor

RAS-13SKVR-E

RAS-16SKV-E

RAS-16SKVR-E

Outdoor

RAS-13SAVR-E

RAS-16SAV-E

RAS-16SAVR-E

Cooling capacity

(kW)

3.5

4.5

4.5

Cooling capacity range

(kW)

0.8-4.1

0.8-5.0

0.8-5.0

Heating capacity

(kW)

4.2

5.3

5.5

Heating capacity range

(kW)

0.9-5.8

0.9-6.2

0.9-6.9

Power supply

Electric

Indoor

Operation mode

Cooling

Heating

Cooling

Heating

Cooling

Heating

characteristic

Running current

(A)

0.21-0.19

0.24-0.22

0.21-0.19

0.24-0.22

0.21-0.19

0.24-0.22

Power consumption

(W)

35

40

30

35

30

35

Power factor

(%)

75

75

65

65

65

65

Outdoor

Operation mode

Cooling

Heating

Cooling

Heating

Cooling

Heating

Running current

(A)

4.57-4.19

5.17-4.74

7.19-6.59

6.94-6.37

6.26-5.74

6.81-6.24

Power consumption

(W)

965

1080

1565

1515

1365

1485

Power factor

(%)

96

96

99

99

99

99

Starting current

(A)

5.17-4.74

7.40-6.78

7.05-6.46

COP

3.50/3.89

2.82/3.42

3.23/3.62

Operating

Indoor

High

(Cooling/Heating)

(dB-A)

39/40

45/45

45/45

noise

Medium

(Cooling/Heating)

(dB-A)

33/34

40/40

40/40

Low

(Cooling/Heating)

(dB-A)

26/28

30/31

30/31

Outdoor

(Cooling/Heating)

(dB-A)

48/50

49/50

49/50

Indoor unit

Unit model

RAS-13SKVR-E

RAS-16SKV-E

RAS-16SKVR-E

Dimension

Height

(mm)

275

275

275

Width

(mm)

790

790

790

Depth

(mm)

205

205

205

Net weight

(kg)

9

9

9

Fan motor output

(W)

20

30

30

Air flow rate

(Cooling/Heating)

(m3/min)

9.0/10.2

11.5/12.4

11.4/12.3

Outdoor unit

Unit model

RAS-13SAVR-E

RAS-16SAV-E

RAS-16SAVR-E

Dimension

Height

(mm)

550

550

550

Width

(mm)

780

780

780

Depth

(mm)

290

290

290

Net weight

(kg)

35

35

39

Compressor

Motor output

(W)

750

750

750

Type

Twin rotary type with DC-inverter variablespeed control

Model

DA111A1F-20F1

DA111A1F-20F1

DA111A1F-20F1

Fan motor output

(W)

43

Air flow rate

(Cooling/Heating)

(m3/min)

37.5/37.5

35/35

36/32

Piping

Type

Flare connection

Flare connection

Flare connection

connection

Indoor unit

Liquid side

(mm)

φ6.35

φ6.35

φ6.35

Gas side

(mm)

φ9.52

φ12.7

φ12.7

Outdoor unit

Liquid side

(mm)

φ6.35

φ6.35

φ6.35

Gas side

(mm)

φ9.52

φ12.7

φ12.7

Maximum length

(m)

20

20

20

Maximum chargeless length

(m)

15

15

15

Maximum height difference

(m)

10

10

10

Refrigerant

Name of refrigerant

R410A

R410A

R410A

Weight

(kg)

0.85

0.85

1.10

Wiring

Power supply

3Wires:includes earth (Outdoor)

connection

Interconnection

4Wires:includes earth

Usable temperature range

Indoor

(Cooling/Heating)

( )

21-32/0-28

21-32/0-28

21-32/0-28

Outdoor

(Cooling/Heating)

( )

-10-46/-15-24

-10-46/-15-24

-10-46/-15-24

Accessory

Indoor unit

Installation plate

1

1

1

Wireless remote controller

1

1

1

Batteries

2

2

2

Remote controller holder

1

1

1

Super Oxi Deo filter

1

1

1

Super Sterilizer filter

-

1

1

Mounting screw

6 (φ4 x 25L)

6 (φ4 x 25L)

6 (φ4 x 25L)

Remote controller holder

2 (φ3.1 x 16L)

2 (φ3.1 x 16L)

2 (φ3.1 x 16L)

Pan head wood screw

Plasma air purifier

1

-

1

Installation manual

1

1

1

Owner's manual

1

1

1

Outdoor unit

Drain nipple

1

1

1

Water proof rubber cap

2

2

2

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

– 5-1 –

2-2. Operation Characteristic Curve

	<Cooling>
		10
		9	RAS-16SKVR-E
		8
			RAS-16SKV-E
		7
		6	RAS-13SKVR-E
	(A)		RAS-13SKV-E
	Current	5
		4	RAS-10SKVR-E

3

2

1

0 0 10 20 30 40 50 60 70 80 90 100 110 120

Compressor speed (rps)

2-3. Capacity Variation Ratio According to Temperature

	<Cooling>
	105
	100									RAS-10SKVR-E
										RAS-13SKVR-E
	95									RAS-16SKVR-E
	90
(%)	85
						RAS-16SKV-E
ratio	80
										RAS-13SKV-E
Capacity	75
	70
	65		Capacity ratio:100%=
			2.5kW(RAS-10SKVR-E)
	60		3.5KW(RAS-13SKV-E,						Conditions
				RAS-13SKVR-E)
			4.5kW(RAS-16SKV-E,						Indoor:DB27/WB19
									Indoor air flow:High
	55			RAS-16SKVR-E)
									Pipe length:5m
	50
	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46
						Outdoor temp. ( )

												Revised-1
<Heating>
	10
	9											RAS-16SKVR-E
	8											RAS-16SKV-E
							RAS-13SKVR-E
	7											RAS-10SKVR-E
	6											RAS-13SKV-E
(A)
Current	5
	4
	3
	2
	1
	0
		0	10	20	30	40	50	60	70	80	90	100	110	120
						Compressor speed (rps)
		<Heating>
	120
	100
	ratio (%)	80
	Capacity	60				RAS-10SKVR-E
						RAS-13SKV-E
	Heating
						RAS-13SKVR-E
		40				RAS-16SKV-E
						RAS-16SKVR-E
		20					Condition
							Indoor:DB20
							Indoor air flow:High
							Pipe length:5m
		0
			-15		-10		-5			0		5		10

Outdoor temp. ( )

– 6 –

3. 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.

3-1. 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.

3-2. Refrigerant Piping Installation

3-2-1. 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 3-2-1. Never use copper pipes thinner than 0.8 mm even when it is available on the market.

– 7 –

Table 3-2-1 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 3-2-3 to 3-2-6 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 3-2-2.

Table 3-2-2 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

3-2-2. 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 than lubricating oils used in the installed air-water heat pump 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.

c)Insertion of Flare Nut

– 8 –

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. 3-2-1 Flare processing dimensions

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

		Outer				A (mm)
	Nominal		Thickness
		diameter			Flare tool for R410A	Conventional flare tool
	diameter		(mm)
		(mm)
					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 3-2-4 Dimensions related to flare processing for R22
		Outer				A (mm)
	Nominal		Thickness
		diameter			Flare tool for R22	Conventional flare tool
	diameter		(mm)
		(mm)
					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 3-2-5 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

– 9 –

Table 3-2-6 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							19.7			19.0	16.0					23					27
3/4	19.05								1.0							23.3			24.0	19.2					34					36
		to	46˚
		45˚
							B			A													C			D

				43˚	to
					45˚

Fig. 3-2-2 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 3-2-7 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 3-2-7 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)

– 10 –

3-3. Tools

3-3-1. Required Tools

The service port diameter of packed valve of the outdoor unit in the air-water heat pump 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		Conventional air-water
				air-water heat pump installation		heat pump installation
	No.	Used tool	Usage
				Existence of	Whether conven-	Whether new equipment
				new equipment	tional equipment	can be used with
				for R410A	can be used	conventional refrigerant
	1	Flare tool	Pipe flaring	Yes	*(Note 1)	¡
		Copper pipe gauge for	Flaring by		*(Note 1)	*(Note 1)
	2	adjusting projection		Yes
			conventional flare tool
		margin
	3	Torque wrench	Connection of flare nut	Yes	×	×
		(For Ø12.7)
	4	Gauge manifold	Evacuating, refrigerant	Yes	×	×
	5	Charge hose	charge, run check, etc.
	6	Vacuum pump adapter	Vacuum evacuating	Yes	×	¡
	7	Electronic balance for	Refrigerant charge	Yes	×	¡
		refrigerant charging
	8	Refrigerant cylinder	Refrigerant charge	Yes	×	×
	9	Leakage detector	Gas leakage check	Yes	×	¡
	10	Charging cylinder	Refrigerant charge	(Note 2)	×	×

(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

Use vacuum pump by attaching vacuum pump adapter.

2.Torque wrench (For Ø6.35, Ø9.52)

3.Pipe cutter

4.	Reamer	9.	Hole core drill (Ø65)
5.	Pipe bender	10.	Hexagon wrench
6.	Level vial		(Opposite side 4mm)
7.	Screwdriver (+, –)	11.	Tape measure
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

– 11 –

3-4. 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 to 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.)

1.Never charge refrigerant exceeding the specified amount.

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

3.Do 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.

(Water heat

(Outdoor unit)

exchanger unit)

		Opened
	Refrigerant cylinder
	(with siphon)
	Check valve	Opened
	Opened
	Open/close	Closed
	valve for charging
		Service port
	Electronic balance for refrigerant charging

Fig. 3-4-1 Configuration of refrigerant charging

– 12 –

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

2.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

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.

cylinder Refrigerant

Electronic

balance

Siphon

Fig. 3-4-2

3-5. Brazing of Pipes

3-5-1. 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.

1.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.

2.When performing brazing again at time of servicing, use the same type of brazing filler.

3-5-2. 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.

– 13 –

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

1.Do not enter flux into the refrigeration cycle.

2.When chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not contain chlorine.

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

4.Remove the flux after brazing.

3-5-3. 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

1)Attach a reducing valve and a flow-meter to the Nitrogen gas cylinder.

2)Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.

3)Apply a seal onto the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow of the Nitrogen gas.

4)When the Nitrogen gas is flowing, be sure to keep the piping end open.

5)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.

6)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).

7)Remove the flux completely after brazing.

M Flow meter

Stop valve

Nitrogen gas cylinder

From Nitrogen cylinder

Pipe Nitrogen gas

Rubber plug

Fig. 3-5-1 Prevention of oxidation during brazing

– 14 –

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

790

RAS-10SKVR-E

RAS-13SKVR-E

RAS-16SKVR-E

Front panel	Air filter	Air inlet	Plasma air purifier

		275
63
7	48	Heat exchanger
			Air ionizer

Knock out system

49

		62	69
116	480	193
	Installation plate hanger

Revised-1

205

63

48

7

Knock out system

				157
			56	19
			Wireless remote controller
	Installation plate hanger		Drain hose (0.50m)
	Connecting pipe (0.35m)		Connecting pipe (0.40m)	125
	(For 10, 13 series; Flare	9.52mm)	(Flare 6.35mm)
	(For 16 series; Flare	12.7mm)

	84.5		235	621		84.5	63	26
				235			Remote controller holder
			215	215
				Minimum	more
			Hanger	distance
					65 or
				to ceiling
	Minimum						45
						Minimum
	distance					distance
275	to ceiling					to ceiling	190
	170 or more					170 or more
	40						40
		Hanger			Hanger
	84.5	150	160.5	160.5	150	84.5
			Center line		Installation plate outline

– 15 –

4-2. Indoor Unit

790

RAS-13SKV-E

RAS-16SKV-E

Front panel	Air filter	Air inlet

		275
63
7	48	Heat exchanger

Knock out system

49

		62	69
116	480	193
	Installation plate hanger

Revised-1

205

63

48

7

Knock out system

Installation plate hanger		Drain hose (0.50m)
Connecting pipe (0.35m)		Connecting pipe (0.40m)
(For 13 series; Flare	9.52mm)	(Flare 6.35mm)
(For 16 series; Flare	12.7mm)

	84.5		235	621		84.5
				235
			215	215
				Minimum	more
			Hanger	distance
					65 or
				to ceiling
	Minimum						45
						Minimum
	distance
						distance
	to ceiling
275						to ceiling	190
	170 or more					170 or more
	40						40
		Hanger			Hanger
	84.5	150	160.5	160.5	150	84.5
			Center line		Installation plate outline

157

56 19

Wireless remote controller

125

63 26

Remote controller holder

– 16 –

Revised-1

4-3. Outdoor Unit

				A
				30	108	125
			600				80
		50	R15
		36
			320	86
320	306		Ø6 hole
			R5.5
A detail Drawing (Back leg)				Ø25 Drain outlet	2- Ø11 x 14		Hole
				FAN-GUARD	(For Ø8 -Ø10 anchor bolt)
				Ø 436
			550
				275
		290		90	600		90	69

	320	306
	Ø6 hole		36	R15
	Ø11x14 hole
			50

B Detail Drawing (Front leg)

320

342

COVER-PV

Z

		Electrical part cover
		Liquid side
		(Flare Ø6.35)
		Gas side
		(10,13 : Flare 9.52)
		(16 : Flare 12..7)
137	92	5
		4

	Z View	Service port
	600	2 - R5-5 x 17L Ushape
		(For 8 - 10 anchor bolt)
100 or more		Air intlel
		600 or more
320
100 or more	Air outlel	600 or more
		2 - 11 x 14 Long holes (For 8 - 10 anchor bolt)

Installation dimension

– 17 –

Revised-1

5. WIRING DIAGRAM

5-1. RAS-13SKV-E / RAS-13SAV-E

RAS-10SKVR-E / RAS-10SAVR-E, RAS-13SKVR-E / RAS-13SAVR-E

– 18 –

5-2. RAS-16SKV-E / RAS-16SAV-E

RAS-16SKVR-E / RAS-16SAVR-E

– 19 –

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

	No.		Parts name	Type	Specifications
		Fan motor	13SKV-E	MMF-240-20-4B	AC240/220V, 20W
	1		10SKVR-E,13SKVR-E	AFS-220-20-4AR	AC240V, 20W
		(for indoor)
			16SKV-E, 16SKVR-E	ICF-340-30-2B	DC 340V, 30W
	2	Room temp. sensor (TA-sensor)		( − )	10kΩ at 25°C
	3	Heat exchanger temp. sensor (TC-sensor)		( − )	10kΩ at 25°C
	4	Louver motor		MP24Z3T	Output (Rated) 1W, 16 poles, DC12V

6-2. Outdoor Unit

	No.		Parts name	Model name			Rating
	1	Reactor			CH-57		L = 10mH, 16A
	2	Outdoor fan motor		ICF-140-43-4R			DC140V, 43W
	3	Suction temp. sensor (TS sensor)		(Inverter attached)			10kΩ (25°C)
	4	Discharge temp. sensor (TD sensor)		(Inverter attached)			62kΩ (20°C)
	5	Outside air temp. sensor (TO sensor)		(Inverter attached)			10kΩ (25°C)
	6	Heat exchanger temp. sensor (TE sensor)		(Inverter attached)			10kΩ (25°C)
	7	Terminal block (6P)					30A, AC600V
	8	Compressor	10SAVR-E, 13SAV-E	DA89X1C-23FZ			3-phases 4-poles 750W
			13SAVR-E, 16SAV-E, 16SAVR-E	DA111A1F-20F1
	9	COIL FOR P.M.V.		C12A-01-R			DC12V
	10	Coil for 4-way valve			VHV		AC220-240V
	11	Compressor thermo		PW-2AL			OFF : 125±4°C, ON : 90±5°C

– 20 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

RAS-10SKVR-E / RAS-10SAVR-E RAS-13SKV-E / RAS-13SAV-E

P Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe

Outer dia. : 9.52mm

Thickness : 0.8mm

	INDOOR UNIT	T1	Temp. measurement
	Indoor heat
	exchanger
		TC	heightAllowable 10m:difference	lengthpipeAllowable
	Cross flow fan	TA
	Deoxidized copper pipe
	Outer dia. : 6.35mm
	Thickness : 0.8mm
	Sectional shape
	of heat insulator

Max. : 20m

Min. : 1m Chargeless : 15m

Charge : 20g/m (16 to 20m)

Muffler

Strainer

4-way valve (STF-0108Z)

	Muffler	Pulse Modulating
		valve at liquid side
	TD	(SEV16RC9)
	Compressor	Strainer
	DA89X1C-23FZ

TS

TO

Outdoor heat exchanger

Temp. measurement T2

TE

Propeller fan		Refrigerant amount : 0.80kg
OUTDOOR UNIT	NOTE :		Gas leak check position
			Refrigerant flow (Cooling)
			Refrigerant flow (Heating)

NOTE :

•The maximum pipe length of this air conditioner is 20 m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

–21 –

RAS-13SKVR-E / RAS-13SAVR-E RAS-16SKV-E / RAS-16SAV-E

P Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe Outer dia. : 9.52mm (13)

: 12.7mm (16)

	INDOOR UNIT	T1	Temp. measurement
	Indoor heat
	exchanger
		TC	heightAllowable 10m:difference	lengthpipeAllowable
	Cross flow fan	TA
	Deoxidized copper pipe
	Outer dia. : 6.35mm
	Thickness : 0.8mm
	Sectional shape
	of heat insulator

Max. : 20m

Min. : 1m Chargeless : 15m

Charge : 20g/m (16 to 20m)

Thickness : 0.8mm

Muffler

4-way valve (STF-0108Z)

Muffler

TD

	Compressor
	DA111A1F-20F1
	TS	TO
	Outdoor heat	Split capillary
	exchanger
		Ø1.2 x 80

Temp. measurement	Ø1.2 x 80
	T2

TE

Propeller fan

OUTDOOR UNIT

Strainer

Pulse Modulating valve at liquid side (SEV16RC9)

Refrigerant amount : 0.85kg

NOTE : Gas leak check position

Refrigerant flow (Cooling) Refrigerant flow (Heating)

NOTE :

•The maximum pipe length of this air conditioner is 20 m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

–22 –

RAS-16SKVR-E / RAS-16SAVR-E

P Pressure measurement

Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe Outer dia. : 12.7mm(16) Thickness : 0.8mm

	INDOOR UNIT	T1	Temp. measurement
	Indoor heat
	exchanger
		TC	heightAllowable 10m:difference	lengthpipeAllowable
	Cross flow fan	TA
	Deoxidized copper pipe
	Outer dia. : 6.35mm
	Thickness : 0.8mm
	Sectional shape
	of heat insulator

Max. : 20m

Min. : 1m Chargeless : 15m

Charge : 20g/m (16 to 20m)

Muffler

4-way valve (STF-0108Z)

	Muffler
	TD
	Compressor
	DA111A1F-20F1
TS		TO
	Outdoor heat	Split capillary
	exchanger
		Ø1.2 x 80
Temp. measurement	T2	Ø1.2 x 80

TE

Propeller fan

OUTDOOR UNIT

Strainer

Pulse Modulating valve at liquid side (SEV16RC9)

Refrigerant amount : 1.10kg

NOTE : Gas leak check position

Refrigerant flow (Cooling) Refrigerant flow (Heating)

NOTE :

•The maximum pipe length of this air conditioner is 15 m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

–23 –

7-2. Operation Data

<Cooling>

Tempeature		Model name	Standard	Heat exchanger		Indoor	Outdoor	Compressor
condition(°C)		RAS-	pressure	pipe temp.		fan mode	fan mode	revolution
Indoor	Outdoor		P (MPa)	T1 (°C)	T2 (°C)			(rps)
27/19	35/-	10SKVR-E	0.9 to 1.1	12 to 14	37 to 39	High	High	49
		13SKV-E	0.8 to 1.0	11 to 13	39 to 41	High	High	77
		13SKVR-E	0.8 to 1.0	11 to 13	46 to 48	High	High	63
		16SKV-E	0.7 to 0.9	10 to 12	47 to 49	High	High	89
		16SKVR-E	0.8 to 1.0	11 to 13	40 to 42	High	High	83

<Heating>

Tempeature		Model name	Standard	Heat exchanger		Indoor	Outdoor	Compressor
condition(°C)		RAS-	pressure	pipe temp.		fan mode	fan mode	revolution
Indoor	Outdoor		P (MPa)	T1 (°C)	T2 (°C)			(rps)
20/-	7/6	10SKVR-E	2.5 to 2.7	39 to 41	0 to 3	High	High	60
		13SKV-E	2.7 to 2.9	43 to 45	0 to 2	High	High	80
		13SKVR-E	2.6 to 2.8	41 to 43	0 to 2	High	High	66
		16SKV-E	2.5 to 2.7	39 to 41	0 to 2	High	High	89
		16SKVR-E	2.7 to 2.9	43 to 45	0 to 2	High	High	83

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

– 24 –

Revised-1

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

RAS-13SKV-E

M.C.U.	Indoor Unit Control Unit

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver

and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

Functions

•Cold draft preventing Function

•3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

•Processing

(Temperature Processing)

•Timer

•Serial Signal Communication

• Clean Function

Louver

Motor

Louver Motor

Drive Control

Indoor Fan

Motor Control

Indoor

Fan Motor

Power Supply

Circuit

Converter (D.C circuit)

	Noise Filter			Serial Signal Transmitter/Receiver
From Outdoor Unit
	220-240V ~50Hz			Serial Signal Communication
				(Operation Command and Information)
REMOTE CONTROLLER					Remote Controller		Infrared Rays, 36.7kHz
					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
					ECO
					Hi-POWER
					COMFORT SLEEP
					QUIET

– 25 –

Revised-1

RAS-16SKV-E

M.C.U.	Indoor Unit Control Unit

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver

and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

Functions

•Cold draft preventing Function

•3-minute Delay at Restart for Compressor

• Fan Motor Starting Control

•Processing

(Temperature Processing)

•Timer

•Serial Signal Communication

• Clean Function

Louver

Motor

Louver Motor

Drive Control

Indoor Fan

Motor Control

Indoor

Fan Motor

Power Supply

Circuit

Converter (D.C circuit)

	Noise Filter			Serial Signal Transmitter/Receiver
From Outdoor Unit
	220-240V ~50Hz			Serial Signal Communication
				(Operation Command and Information)
REMOTE CONTROLLER					Remote Controller		Infrared Rays, 36.7kHz
					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
					ECO
					Hi-POWER
					COMFORT SLEEP
					QUIET

– 26 −

Revised-1

RAS-10SKVR-E, RAS-13SKVR-E

M.C.U.	Indoor Unit Control Unit

		Functions	Louver
	Heat Exchanger Sensor (Tc)		Motor
	Room Temperature Sensor (Ta)	• Cold draft preventing Function
		• 3-minute Delay at Restart for Compressor	Louver Motor
			Drive Control
	Infrared Rays Signal Receiver
		• Fan Motor Starting Control
	and Indication		Indoor Fan
		• Processing	Motor Control
	Initializing Circuit	(Temperature Processing)
	Clock Frequency	• Timer	Indoor
			Fan Motor
	Oscillator Circuit	• Serial Signal Communication
		• Clean Function
	Power Supply		Air purifier
			unit
	Circuit
	Converter		Micro Switch
	(D.C circuit)

	Noise Filter		Serial Signal Transmitter/Receiver
From Outdoor Unit
	220-240V ~50Hz		Serial Signal Communication

(Operation Command and Information)

Remote Controller

Infrared Rays, 36.7kHz

REMOTE CONTROLLER

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

ECO

Hi-POWER

COMFORT SLEEP

QUIET

– 27 –

Revised-1

RAS-16SKVR-E

M.C.U.	Indoor Unit Control Unit

		Functions	Louver
	Heat Exchanger Sensor (Tc)		Motor
	Room Temperature Sensor (Ta)	• Cold draft preventing Function
		• 3-minute Delay at Restart for Compressor	Louver Motor
			Drive Control
	Infrared Rays Signal Receiver
		• Fan Motor Starting Control
	and Indication		Indoor Fan
		• Processing	Motor Control
	Initializing Circuit	(Temperature Processing)
	Clock Frequency	• Timer	Indoor
			Fan Motor
	Oscillator Circuit	• Serial Signal Communication
		• Clean Function
	Power Supply		Air purifier
			unit
	Circuit
	Converter		Micro Switch
	(D.C circuit)

	Noise Filter		Serial Signal Transmitter/Receiver
From Outdoor Unit
	220-240V ~50Hz		Serial Signal Communication

(Operation Command and Information)

Remote Controller

Infrared Rays, 36.7kHz

REMOTE CONTROLLER

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

ECO

Hi-POWER

COMFORT SLEEP

QUIET

– 28 –

For INDOOR UNIT

MICRO-COMPUTER BLOCK DIAGRAM

	220–240 V ~50Hz
			MCC5009 (P.C.B)				OUTDOOR UNIT
	Indoor unit					Current
	send/receive		M.C.U
	circuit					detect
		•	PWM synthesis function
		•	Input current release control			Gate drive
	Discharge	•	IGBT over-current detect control
		•	Outdoor fan control			circuit
	temp. sensor
		•	High power factor correction control
	Outdoor air	•	Inverter output frequency control
	temp. sensor	•	A/D converter function			Current
–		•	P.M.V. control			detect
	Suction temp.
2		•	Discharge temp. control
	sensor
9
		•	4-way valve control
–						Gate drive
		•	Signal communication to indoor unit
	Heat exchanger
						circuit
	temp.sensor
		High Power		Clock
		factor Correction		frequency
			circuit	4MHz
	Noise	Input current		Converter		Inverter	Outdoor
	Filter		sensor	(AC → DC)		(DC → AC)	Fan motor
			Driver circuit		Relay	Inverter	Compressor
			of P.M.V.		circuit	(DC → AC)

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

4-way P.M.V. valve

Assembly) (Inverter Unit Outdoor .2-8