Toshiba RAS-16SAVP-E, RAS-B16SKVP-E, RAS-13SAVP-E SERVICE MANUAL

FILE NO. A06-011

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

Indoor Unit Outdoor Unit

<High W all, Heat Pump Type> <Heat Pump Type>

(Standard T ype)

RAS-B10SKVP-E RAS-10SAVP-E
RAS-B13SKVP-E RAS-13SAVP-E
RAS-B16SKVP-E RAS-16SAVP-E

(North Europe Type)

RAS-10SKVP-ND RAS-10SAVP-ND
RAS-13SKVP-ND RAS-13SAVP-ND
RAS-16SKVP-ND RAS-16SAVP-ND

R410A

PRINTED IN JAPAN, Fub, 2007 ToMo

CONTENTS

1. SAFETY PRECAUTIONS .......................................................................... 3

2. SPECIFICATIONS...................................................................................... 5

3. REFRIGERANT R410A ............................................................................. 9

4. CONSTRUCTION VIEWS ........................................................................ 17

5. WIRING DIAGRAM .................................................................................. 20

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 22

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 23

8. CONTROL BLOCK DIAGRAM................................................................ 25

9. OPERATION DESCRIPTION................................................................... 27

10. INSTALLATION PROCEDURE ................................................................ 55

11. HOW TO DIAGNOSE THE TROUBLE...................................................... 68

12. HOW TO REPLACE THE MAIN P ARTS................................................... 89

13. EXPLODED VIEWS AND PARTS LIST ................................................. 108

14. SET UP OF SERVICE P.C. BOARD....................................................... 118

– 2 –

1. SAFETY PRECAUTIONS

For general public use

Power supply cord of outdoor unit shall be 1.5 mm ² (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 an y 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

A switch or circuit breaker that can disconnect all poles must be included in the fixed wiring.
Be sure to use an approved circuit breaker or switch.

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 b y 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 perf ormed 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 –

2. SPECIFICATIONS

2-1. Specifications

RAS-B10SKVP-E/RAS-B13SKVP-E/RAS-B16SKVP-E, RAS-10SAVP-E/RAS-13SAVP-E/RAS-16SAVP-E

Unit model
Cooling capacity (kW)

Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply

Electric
characteristics

COP (Cooling/Heating)

Operating
noise

Indoor unit Depth (mm)

Outdoor unit

Piping
connection

Refrigerant

Wiring
connection

Usable
temperature range

Accessory

Indoor
Outdoor

Operation mode

Indoor

Outdoor Power consumption (W)

Indoor Medium (Cooling/Heating) (dB•A)

Outdoor (Cooling/Heating) (dB•A)
Unit model

Dimension Width (mm)

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

Dimension Width (mm)

Net weight (kg)

Compressor Type

Fan motor output (W)
Air flow rate (Cooling/Heating) (m³/h)
Type

Indoor unit

Outdoor unit
Maximum length (m)

Maximum chargeless length (m)
Maximum height difference (m)
Name of refrigerant
Weight (kg)
Power supply
Interconnection

Indoor
unit

Outdoor
unit

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

Power factor (%)
Starting current (A)

High (Cooling/Heating) (dB•A)

Low (Cooling/Heating) (dB•A)

Height (mm)

Height (mm)

Depth (mm)

Motor output (W)

Model

Liquid side
Gas side
Liquid side
Gas side

Indoor (Cooling/Heating) (°C)

Outdoor (Cooling/Heating) (°C)
Installation plate
Wireless remote controller
Batteries
Remote controller holder
Mounting screw
Remote controller holder mounting screw
Plasma pure filter
Installation manual
Owner’s manual
Drain nipple
Water-proof rubber cap

RAS-B10SKVP-E RAS-B13SKVP-E RAS-B16SKVP-E

RAS-10SAVP-E RAS-13SAVP-E RAS-16SAVP-E

2.5 3.5 4.5

0.5–3.5 0.6–4.5 0.8–5.0

3.2 4.2 5.5

0.6 – 6.1 0.6 – 6.9 0.8 – 8.0
1 Ph/50Hz/220–240 V, 1 Ph/60Hz/220 V

Cooling Heating Cooling Heating Cooling Heating

0.15 0.15 0.15 0.15 0.15 0.15
30 30 30 30 30 30
87 87 87 87 87 87

Cooling Heating Cooling Heating Cooling Heating

2.57/2.45/2.34 3.15/3.00/2.87 4.00/3.82/3.66 4.40/4.20/4.02 6.18/5.90/5.65 6.83/6.43/6.25
460 600 820 920 1320 1460

82 87 93 95 97 97

3.30/3.15/3.02 4.55/4.35/4.17 6.98/6.68/6.40

5.10/5.08 4.12/4.42 3.33/3.69
42/43 43/44 45/45
33/36 34/37 36/39
27/27 27/27 29/29
46/47 48/50 49/50

RAS-B10SKVP-E RAS-B13SKVP-E RAS-B16SKVP-E

250 250 250
790 790 790
208 208 208

999

30 30 30

550/620 570/640 630/670

RAS-10SAVP-E RAS-13SAVP-E RAS-16SAVP-E

550 550 550
780 780 780
290 290 290

38 38 38

750 750 750

Twin rotary type with DC-inverter variable speed control

DA111A1F-24F DA111A1F-24F D A111A1F-24F

43 43 43

1740/1620 1950/1620 2160/1740

Flare connection Flare connection Flare connection

Ø6.35 Ø6.35 Ø6.35
Ø9.52 Ø9.52 Ø12.7
Ø6.35 Ø6.35 Ø6.35
Ø9.52 Ø9.52 Ø12.7

25 25 25
15 15 15
10 10 10

R410A R410A R410A

1.05 1.05 1.05
3 Wires : includes earth (Outdoor)

4 Wires : includes earth

21–32/0–28 21–32/0–28 21–32/0–28

5–46/–15–24 5–46/–15–24 5–46/–15–24

111
111
222
111

6 (Ø4 × 25L) 6 (Ø4 × 25L) 6 (Ø4 × 25L)

2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L)

111
111
111
111
222

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

– 5 –

RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND/RAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND

Unit model

Cooling capacity (kW)
Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply

Electric
characteristics

COP (Cooling/Heating)

Operating
noise

Indoor unit Depth (mm)

Outdoor unit

Piping
connection

Refrigerant

Wiring
connection

Usable
temperature range

Accessory

Indoor
Outdoor

Operation mode

Indoor

Outdoor Power consumption (W)

Indoor Medium (Cooling/Heating) (dB•A)

Outdoor (Cooling/Heating) (dB•A)
Unit model

Dimension Width (mm)

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

Dimension Width (mm)

Net weight (kg)

Compressor Type

Fan motor output (W)
Air flow rate (Cooling/Heating) (m³/h)
Type

Indoor unit

Outdoor unit

Maximum length (m)
Maximum chargeless length (m)
Maximum height difference (m)
Name of refrigerant
Weight (kg)
Power supply
Interconnection

Indoor
unit

Outdoor
unit

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

Power factor (%)
Starting current (A)

High (Cooling/Heating) (dB•A)

Low (Cooling/Heating) (dB•A)

Height (mm)

Height (mm)

Depth (mm)

Motor output (W)

Model

Liquid side
Gas side
Liquid side
Gas side

Indoor (Cooling/Heating) (°C)

Outdoor (Cooling/Heating) (°C)
Installation plate
Wireless remote controller
Batteries
Remote controller holder
Mounting screw
Remote controller holder mounting screw
Plasma pure filter
Installation manual
Owner’s manual
Drain nipple
Water-proof rubber cap

RAS-10SKVP-ND RAS-13SKVP-ND RAS-16SKVP-ND
RAS-10SA VP-ND RAS-13SAVP-ND RAS-16SAVP-ND

2.5 3.5 4.5

0.5–3.5 0.6–4.5 0.8–5.0

3.2 4.2 5.5

0.6 – 6.1 0.6 – 6.9 0.8 – 8.0
1 Ph/50Hz/220–240 V

Cooling Heating Cooling Heating Cooling Heating

0.15 0.15 0.15 0.15 0.15 0.15
30 30 30 30 30 30
87 87 87 87 87 87

Cooling Heating Cooling Heating Cooling Heating

2.57/2.45/2.34 3.15/3.00/2.87 4.00/3.82/3.66 4.40/4.20/4.02 6.18/5.90/5.65 6.83/6.43/6.25
460 600 820 920 1320 1460

82 87 93 95 97 97

3.30/3.15/3.02 4.55/4.35/4.17 6.98/6.68/6.40

5.10/5.08 4.12/4.42 3.33/3.69
42/43 43/44 45/45
33/36 34/37 36/39
27/27 27/27 29/29
46/47 48/50 49/50

RAS-10SKVP-ND RAS-13SKVP-ND RAS-16SKVP-ND

250 250 250
790 790 790
208 208 208

999

30 30 30

550/620 570/640 630/670

RAS-10SAVP-ND RAS-13SAVP-ND RAS-16SAVP-ND

550 550 550
780 780 780
290 290 290

38 38 38

750 750 750

Twin rotary type with DC-inverter variable speed control

DA111A1F-24F DA111A1F-24F D A111A1F-24F

43 43 43

1740/1620 1950/1620 2160/1740

Flare connection Flare connection Flare connection

Ø6.35 Ø6.35 Ø6.35
Ø9.52 Ø9.52 Ø12.7
Ø6.35 Ø6.35 Ø6.35
Ø9.52 Ø9.52 Ø12.7

25 25 25
15 15 15
10 10 10

R410A R410A R410A

1.05 1.05 1.05
3 Wires : includes earth (Outdoor)

4 Wires : includes earth

21–32/0–28 21–32/0–28 21–32/0–28

5–46/–15–24 5–46/–15–24 5–46/–15–24

111
111
222
111

6 (Ø4 × 25L) 6 (Ø4 × 25L) 6 (Ø4 × 25L)

2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L)

111
111
111
111
222

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

– 6 –

2-2. Operation Characteristic Curve

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E
<Cooling> <Heating>

10 10

99

8

7

6

5

4

Current (A)

3

2

1

0

0 20406080 120100

• Conditions
Indoor : DB 27˚C/WB 19˚C
Outdoor : DB 35˚C
Air flow : High
Pipe length : 5m
Voltage : 230V

Compressor speed (rps)

RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND

8

7

6

5

4

Current (A)

3

2

1

0

0 20 40 60 80 120140 140100

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

Compressor speed (rps)

<Cooling> <Heating>

10 10

99

8

7

6

5

4

Current (A)

3

2

1

0

0 20406080 120100

• Conditions
Indoor : DB 27˚C/WB 19˚C
Outdoor : DB 35˚C
Air flow : High
Pipe length : 5m
Voltage : 230V

Compressor speed (rps)

8

7

6

5

4

Current (A)

3

2

1

0

0 20 40 60 80 120140 140100

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

Compressor speed (rps)

– 7 –

2-3. Capacity Variation Ratio According to Temperature

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E
<Cooling> <Heating>

110

100

90

80

Capacity ratio (%)

70

60

50

32

34 36 38 40 4233 35 37 39 41 43 44 45 46

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

Outdoor temp. (˚C)

120

100

80

60

Capacity ratio (%)

40

20

0
–15 –10 –5 0 5 7 10

• Conditions
Indoor : DB 20˚C
Indoor air flow : High
Pipe length : 5m

Outdoor temp. (˚C)

RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND
<Cooling> <Heating>

110

100

90

80

Capacity ratio (%)

70

60

50

32

34 36 38 40 4233 35 37 39 41 43 44 45 46

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

Outdoor temp. (˚C)

120

100

80

60

Capacity ratio (%)

40

20

0
–15 –10 –5 0 5 7 10

• Conditions
Indoor : DB 20˚C
Indoor air flow : High
Pipe length : 5m

Outdoor temp. (˚C)

– 8 –

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 mater i­als 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 por t
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.
Further more, 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.

– 9 –

Table 3-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

1/4
3/8
1/2
5/8

Outer diameter (mm)

6.35

9.52

12.70

15.88

R410A R22

0.80 0.80

0.80 0.80

0.80 0.80

1.00 1.00

2. Joints

For copper pipes, flare joints or socket joints are used. Pr ior 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

1/4
3/8
1/2
5/8

Reference outer diameter of

copper pipe jointed (mm)

6.35

9.52

12.70

15.88

Minimum joint thickness

(mm)

0.50

0.60

0.70

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

– 10 –

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.

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

Nominal

diameter

Outer

diameter

(mm)

Thickness

(mm)

Fig. 3-2-1 Flare processing dimensions

Flare tool for R410A

clutch type

ØD

A

A (mm)

Conventional flare tool

Clutch type Wing nut type

1/4
3/8
1/2
5/8

Nominal

diameter

1/4
3/8
1/2
5/8

6.35

9.52

12.70

15.88

0.8

0.8

0.8

1.0

0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5

Table 3-2-4 Dimensions related to flare processing for R22

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

Flare tool for R22

clutch type

0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

1.0 to 1.5 2.0 to 2.5

A (mm)

Conventional flare tool

Clutch type Wing nut type

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

0.5 to 1.0 1.5 to 2.0

Nominal

diameter

1/4
3/8
1/2
5/8

Table 3-2-5 Flare and flare nut dimensions for R410A

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

0.8

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

– 11 –

Flare nut width

(mm)

17
22
26
29

Table 3-2-6 Flare and flare nut dimensions for R22

Nominal

diameter

1/4
3/8
1/2
5/8
3/4

Outer diameter

(mm)

6.35

9.52

12.70

15.88

19.05

45˚ to 46˚

Thickness

(mm)

0.8

0.8

0.8

1.0

1.0

B A

Dimension (mm)

ABCD

9.0 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.7 19.0 16.0 23

23.3 24.0 19.2 34

D

C

43˚ to 45˚

Flare nut width

(mm)

17
22
24
27
36

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

diameter

Outer diameter

(mm)

Tightening torque

N•m (kgf•cm)

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

1/4
3/8
1/2
5/8

6.35

9.52

12.70

15.88

14 to 18 (140 to 180)
33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)

– 12 –

16 (160), 18 (180)

42 (420)
55 (550)
65 (650)

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

air-water heat pump installation

No.

1

2

3

4
5
6

7
8

9

10

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

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

Used tool

Flare tool
Copper pipe gauge for

adjusting projection
margin

Torque wrench
(For Ø12.7)

Gauge manifold
Charge hose
Vacuum pump adapter

Electronic balance for
refrigerant charging

Refrigerant cylinder
Leakage detector
Charging cylinder

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

Pipe flaring
Flaring by

conventional flare tool

Connection of flare nut

Evacuating, refrigerant
charge, run check, etc.

Vacuum evacuating
Refrigerant charge
Refrigerant charge

Gas leakage check
Refrigerant charge

Usage

Existence of
new equipment
for R410A

Yes

Yes

Yes

Yes

Yes
Yes
Yes

Yes

(Note 2)

R410A

Whether conven­tional equipment
can be used

*(Note 1)

*(Note 1)

×
×

×
×
×

×
×

Conventional air-water
heat pump installation

Whether new equipment
can be used with
conventional refrigerant

¡

*(Note 1)

×
×

¡

¡

×

¡

×

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

5. Pipe bender

6. Level vial

7. Screwdriver (+, –)

8. Spanner or Monkey wrench

9. Hole core drill (Ø65)

10. Hexagon wrench
(Opposite side 4mm)

11. Tape measure

12. Metal saw

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

1. Clamp meter

2. Thermometer

3. Insulation resistance tester

4. Electroscope

– 13 –

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.

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.

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.

(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
exchanger unit)

Opened

(Outdoor unit)

Refrigerant cylinder

(with siphon)

Check valve

Opened
Open/close
valve for charging

Electronic balance for refrigerant charging

Fig. 3-4-1 Configuration of refrigerant charging

Opened

Closed

Service port

– 14 –

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

OUTDOOR unit

Refrigerant

cylinder

Gauge manifold

OUTDOOR unit

cylinder

Refrigerant

Electronic

balance

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

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.

Electronic

balance

Siphon

Fig. 3-4-2

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

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. 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.

– 15 –

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

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.

Piping material

Copper - Copper

Copper - Iron

Iron - Iron

Used brazing filler

Phosphor copper

Silver
Silver

Used flux

Do not use

Paste flux
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.

M

Flow meter

Stop valve

Nitrogen gas

cylinder

From Nitrogen cylinder

Pipe

Rubber plug

Fig. 3-5-1

Prevention of oxidation during brazing

Nitrogen
gas

– 16 –

4. CONSTRUCTION VIEWS

42

Hanging section

Stud bolt hole for Ø6

Outline of
installation plate

Lower part
hanging section

Center line of installation plateCenter line of main unit

Stud bolt hole for Ø8 to Ø10

( )

Minimum distance
to wall

674

304

790

30491 91

2591

42

3

167.5

250

450
28810 10 10 10

790

Plasma pure filter

Air filter

Front panel

Knockout system Knockout system

55 65

208

790

607

250

7 51.5

Indoor heat exchanger

54.5 60 60 54.5

53

53

Installation plate hanging section

290

Installation plate hanging section Drain hose

(Outside length: 0.54m)

Connecting pipe (Outside length: 0.4m)
Flare Ø9.52 (B16SKVP-E: Ø12.7)

Connecting pipe
(Outside length: 0.45m)
Flare Ø6.35

47 or more

74 or more140 or more

( )

Minimum distance
to ceiling

( )

Minimum distance
to wall

Remote controller holder

Wireless remote controller

64

125.5

163

5

58 19

Part of Remote controller

WH-H04JE

4-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E

– 17 –

RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND

790

Front panel

607

55 65

Knockout system Knockout system

Indoor heat exchanger

250

53

54.5 60 60 54.5

Plasma pure filter

Air filter

790

Installation plate hanging section

208

7 51.5

Remote controller holder

53

Wireless remote controller

64

58 19

5

125.5

163

Installation plate hanging section Drain hose

Connecting pipe (Outside length: 0.4m)
Flare Ø9.52 (16SKVP-ND: Ø12.7)

Hanging section

Minimum distance

( )

to wall

250

167.5

3

42

Lower part
hanging section

304

290

674
450
28810 10 10 10

Minimum distance

( )

to ceiling

47 or more

Outline of
installation plate

30491 91

790

(Outside length: 0.54m)

Connecting pipe
(Outside length: 0.45m)
Flare Ø6.35

2591

Stud bolt hole for Ø6

Stud bolt hole for Ø8 to Ø10

Minimum distance

( )

to wall

74 or more140 or more

42

Center line of installation plateCenter line of main unit

Part of Remote controller

WH-H05JE

– 18 –

4-2. Outdoor Unit

RAS-10SAVP-E, RAS-13SAVP-E, RAS-16SAVP-E, RAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND

69.5

147

320

Anchor bolt

long hole pitch

218

550

A leg part

290

306

Dia.7 hole pitch

B leg part

6

48335

dia.436 108

44952

32 500

483

780

600

20

257

4-dia.4.5 embossment

90

Dia.11-14U-shape hole
(For dia.8-10 anchor bolt)

8-dia.7 hole
(For fixing outdoor unit)

dia.11 × 14 long hole
(For dia.8-10 anchor bolt)

Packed valve cover

Fan guard

22

25

93

71

Charging port

137

145

157

5454

31 143

342

79

21

Connecting pipe port

(Pipe dia.6.35)

Connecting pipe port

(Pipe dia.9.52 : 10SAVP-E, ND)
(Pipe dia.9.52 : 13SAVP-E, ND)
(Pipe dia.12.7 : 16SAVP-E, ND)

Unit : mm

88

20

28

Mounting dimensions of anchor bolt

2-dia.11 × 14U-shape hole
(For dia.8-10 anchor bolt)

Intake

100 or more

320

C

200 or more

Drain long hole

dia.25

Drain hole

Fin guard

D

60

108 125

600

50 or more

B

Outlet

88

20

30

When iastalling the outdoor unit,
Leave open in at least two of

Intake

Outside line
of product

2-dia.11 × 14 long hole
(For dia.8-10 anchor bolt)

directions (A), (B), (C) and (D)
shown in the figure below.

250 or more

(Minimum distance from wall)

600

54
38

R15

2-dia.7 hole

320

R5.5

Outside line

11

of product

Detailed A leg part

11

2-dia.7 hole

320

R5.5

38
54

600

Outside line
of product

R15

Detailed B leg part

A

– 19 –

5. WIRING DIAGRAM

5-1. Outdoor Unit

RAS-10SAVP-E, RAS-13SAVP-E, RAS-16SAVP-E

Compressor

CM

BRW

Reactor

RED

1
2
3

YEL

YEL

YEL

ORN

121

1
2
3

2

P04

WHI

P05

BLK

P06

P25

P24

P23

P22

P21

P20

P35 L03

P34

P19

P18
P11

P08

P33 P30 BLK

DB01

Q404

P32

PUR

Q200 ~ 205
IGBT

Power Relay

DB02

P31

Reactor

R221

R220

R219

+–+–+

C12 C14

CT

Relay

CN701 P07

112

2

C13

11223

R321

R320

R319

–

Absorber

3

Coil for

4-way Valve

Q300 ~ 305
MOS-FET

P. C. Board
MCC-5009

Varistor

L01

Varistor

Surge

F03 Fuse
250V ~
T3.15A

F01 Fuse
250V ~
T25A

P03

P10
BLK

ORN WHI

P02

NL321

CN300

CN700

CN603

CN602

CN601

CN600

Fan Motor

BLK

3

3

WHI

2

2

RED

1

1

Pulse Motor Valve

6

6

5

5

4

4
3 3
2 2
1 1

3

3
2

2

1

1

Suction pipe

Temp. Sensor

212

1

Outdoor

Temp. Sensor

3

3
2

2

1

1

Discharge pipe

Temp. Sensor

212

1

Condenser pipe

Temp. Sensor

FM

PMV

(TS)

(TO)

(TD)

(TE)

5-2. Indoor Unit

RAS-B10SKVP-E,
RAS-B13SKVP-E,
RAS-B16SKVP-E

Heat
Exchanger
Sensor
(TCJ)

BLK

Heat Exchanger
Sensor
(TC)

BLK

Thermo Sensor
(TA)

BLK

1
2
3
4 4
5 5
6 6
7 7
8 8

MCC-5052

9 9

Wireless Unit Assembly

10 10

CN10

(WHI)

CN63
(YEL)

BLK

121

2

BLK

121

2

BLK

121

2

WHI

1
2
3

BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU

1
2
3
4 4
5 5
6 6
7 7
8 8
9 9

10 10

CN21
(WHI)

1
2
3

BRW
BRW
BRW

RED

1

4433221

CN42
(WHI)

CN62

(BLU)

CN61

(WHI)

Main P. C. Board

MCC-5045

4

4

3

3

Power Supply

2

2

1 1

Air Purifier

Electrode

High-voltage

BLK

F01 Fuse
AC 250V
T3.15A

Varistor

R01

Line Filter

Indoor Terminal Block

BLK

113

CN01CN02 CN51

WHI

~

+

–

~

DC5V

DC12V

+

Power Supply
220-240V~, 50Hz

220-220V~, 60Hz

321

RED

CN41

(RED)

121

1

2

3
4 4

CN31

5 5

(WHI)

6 6

1

CN32
(WHI)

2
3
4
5 5

1

Circuit

2
3

Power Supply

4

Heat Exchanger

GRN & YEL

2

RED

1

2

BLK

3

WHI

YEL

BLU

WHI

1
2
3
4

CN22
(WHI)

YEL
YEL
YEL
YEL

1
2
3
4 4
5 5

1
2
3

BRW

Micro SW

BLU

Fan Motor

DC Motor

Louver Motor

– 20 –

5-3. Outdoor Unit

RAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND

Compressor

CM

Reactor

RED

1

1

WHI

2

2

BLK

3

3

P25

YEL

P23

YEL

P21

BRW

P35 L03

YEL

P19

ORN

P18
P11

121

2

P08

5-4. Indoor Unit

RAS-10SKVP-ND,
RAS-13SKVP-ND,
RAS-16SKVP-ND

Heat Exchanger
Sensor
(TCJ)

BLK

Heat Exchanger
Sensor
(TC)

BLK

Thermo Sensor
(TA)

BLK

Wireless Unit Assembly

BLK

BLK

BLK

WHI

1

1

BLU

2

2

BLU

3

3

BLU

4 4

BLU

5 5

BLU

6 6

BLU

7 7

BLU

8 8

MCC-5052

BLU

9 9

BLU

10 10

CN10

(WHI)

121

121

121

1
2
3
4 4
5 5
6 6
7 7
8 8
9 9

10 10

CN21
(WHI)

2

2

2

1
2
3

P04
P05
P06

P24

P22

P20

P34

DB01

Q404

P33 P30 BLK

CN63
(YEL)

CN62

(BLU)

CN61

(WHI)

P32

PUR

Air Purifier

Electrode

High-voltage

Power Supply

4433221

BRW

4433221

Main P. C. Board

MCC-5045

Reactor

BRW

BRW

CN42
(WHI)

Q200 ~ 205
IGBT

Power Relay

DB02

P31

112

1

RED

1

Line Filter

R221

R220

R219

C13

+–+–+

C12 C14

CT

Relay

CN703 P0 7

2

F01 Fuse
AC 250V
T3.15A

Varistor

R01

CN701

11223

3

Fuse
250V~
T3.15A

Heater for

Anti Freeze

Indoor Terminal Block

113

R321

R320

R319

–

Relay

11223

CN01CN02 CN51

~

–

~

Q300 ~ 305
MOS-FET

P. C. Board
MCC-5009

Surge

Absorber

3

Coil for

4-way Valve

BLKBLK

WHI

+

+

Varistor

L01

Varistor

P03

ORN WHI

DC5V
DC12V

F03 Fuse
250V ~
T3.15A

F01
Fuse
250V~
T25A

P10
BLK

Power Supply
220-240V~, 50Hz

321

RED

CN31
(WHI)

CN32
(WHI)

Circuit

Power Supply

CN300

CN700

CN603

CN602

CN601

CN600

P02

NL321

Heat Exchanger

GRN & YEL

CN41

(RED)

121

2

RED

1

1

2

2

BLK

3

3

WHI

4 4

YEL

5 5

BLU

6 6

WHI

1

1

YEL

2

2

YEL

3

3

YEL

4

4

YEL

5 5

1
2

CN22
(WHI)

3
4

Fan Motor

BLK

3

3

WHI

2

2

RED

1

1

Pulse Motor Valve

6

6
5

5
4

4
3 3
2 2
1 1

3

3
2

2

1

1

Suction pipe

Temp. Sensor

212

1

Outdoor

Temp. Sensor

3

3
2

2

1

1

Discharge pipe

Temp. Sensor

212

1

Condenser pipe

Temp. Sensor

BRW

BLU

Fan Motor

1

1

2

2

3

3
4 4
5 5

Louver Motor

FM

PMV

(TS)

(TO)

(TD)

(TE)

Micro SW

DC Motor

– 21 –

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E
RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND

No.

1

Fan motor (for indoor)

2

Room temp. sensor (TA-sensor)

3

Heat exchanger temp. sensor (TC-sensor)

4

Heat exchanger temp. sensor (TCJ-sensor)

5

Louver motor

Parts name

MF-280-30-5R

6-2. Outdoor Unit

RAS-10SAVP-E, RAS-13SAVP-E, RAS-16SAVP-E
RAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND

No.

1

Reactor

2

Outside fan motor

Parts name

Model name

ICF-140-43-4R

Type

( – )

( – )

( – )

MP24Z3N

CH-57

Specifications

DC280–340V, 30W

10kΩ at 25°C

10kΩ at 25°C

10kΩ at 25°C

Output (Rated) 1W, 16 poles, DC12V

Rating

L = 10mH, 16A

DC140V, 43W

3

Suction temp. sensor (TS sensor)

4

Discharge temp. sensor (TD sensor)

5

Outside air temp. sensor (TO sensor)

6

Heat exchanger temp. sensor (TE sensor)

7

Terminal block (6P)

8

Compressor

9

Coil for P.M.V.

10

Coil for 4-way valve

11

Cord heater assembly (-ND model only)

12

Heater fuse assembly (-ND model only)

(Inverter attached)

(Inverter attached)

(Inverter attached)

(Inverter attached)

——

DA111A1F-24F

CAM-MD12TF

STF

CSC-2

——

10kΩ (25°C)

62kΩ (20°C)

10kΩ (25°C)

10kΩ (25°C)

20A, AC250V

3-phases 4-poles 750W

DC12V

AC220–240V

AC230V, 75W

AC250V, 3.15A

– 22 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

P

Pressure measurement
Gauge attaching port

Vacuum pump connecting port

Deoxidized copper pipe

Outer dia.:

9.52mm (10SAVP-E, -ND)

9.52mm (13SAVP-E, -ND)

12.7mm (16SAVP-E, -ND)
Thickness: 0.8mm

4-way valve
(STF-0108Z)

Muffler

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm

Sectional shape
of heat insulator

Muffler

TD

TCJ

T1

Temp. measurement

TC

TA

Strainer

Pulse motor
valve at liquid side
(CAM-B22YGTF-3)

Allowable height

difference : 10m

Allowable pipe length

Max. : 25m
Min. : 2m
Chargeless : 15m
Charge : 20g/m
(16 to 25m)

Compressor
DA111A1F-24F

TS

Outdoor heat

exchanger

Propeller fan

OUTDOOR UNIT

TO

Split capillary

Ø1.2 x 80

Ø1.2 x 80

T1

TE

Temp. measurement

T1

T2

NOTE :

Refrigerant amount : 1.05kg

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

NOTE :

• The maximum pipe length of this air conditioner is 25 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. 200g)

– 23 –

7-2. Operation Data

<Cooling>

Temperature

condition (°C)

Indoor Outdoor

27/19 35/–

<Heating>

Temperature

condition (°C)

Indoor Outdoor

20/– 7/6

Model name

RAS-

B10SKVP-E
10SKVP-ND

B13SKVP-E
13SKVP-ND

B16SKVP-E
16SKVP-ND

Model name

RAS-

B10SKVP-E
10SKVP-ND

B13SKVP-E
13SKVP-ND

Standard
pressure

P (MPa)

1.0 to 1.2

0.9 to 1.1

0.8 to 1.0

Standard
pressure

P (MPa)

2.1 to 2.3

2.4 to 2.6

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

13 to 15 36 to 39

10 to 13 37 to 39

8 to 11 37 to 40

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

37 to 39 3 to 5

41 to 44 2 to 4

Indoor

fan mode

High

High

High

Indoor

fan mode

High

High

Outdoor

fan mode

High

High

High

Outdoor

fan mode

High

High

Compressor

revolution

(rps)

35

56

82

Compressor

revolution

(rps)

46

62

B16SKVP-E
16SKVP-ND

2.8 to 3.0

48 to 50 2 to 4

High

High

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

85

– 24 –

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E / RAS-10SKVP-ND, RAS-13SKVP-ND, RAS-16SKVP-ND

Heat Exchanger Sensor (Tcj)

Heat Exchanger Sensor (Tc)

Room Temperature Sensor (Ta)

Infrared Rays Signal Receiver

and Indication

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Converter

(D.C circuit)

Noise Filter

M.C.U.

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

Serial Signal Transmitter/Receiver

Indoor Unit Control Unit

Louver

Motor

Louver Motor
Drive Control

Indoor Fan

Motor Control

Indoor

Fan Motor

Air purifier

unit

Micro Switch

From Outdoor Unit
220-240V
220V

~

50Hz

~

60Hz (-E model only)

REMOTE CONTROLLER

Serial Signal Communication

(Operation Command and Information)

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

SLEEP MODE

Hi POWER

Air Purifier

Infrared Rays, 36.7kHz

OFF (1, 3, 5, 9H OFF timer)

8˚C (-ND model only)

– 25 –

8-2. Outdoor Unit (Inverter Assembly)

RAS-10SAVP-E, RAS-13SAVP-E, RAS-16SAVP-E
RAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND

Outdoor

Fan motor

AC)

®

Inverter

(DC

Compressor

MICRO-COMPUTER BLOCK DIAGRAM

50Hz

~

MCC5009 (P.C.B) OUTDOOR UNIT

Indoor unit

60Hz (-E model only)

~

detect

Current

M.C.U

• PWM synthesis function

send/receive circuit

circuit

Gate drive

• Input current release control

• IGBT over-current detect control

• Outdoor fan control

detect

Current

• High power factor correction control

• Inverter output frequency control

• A/D converter function

circuit

Gate drive

• P.M.V. control

• Discharge temp. control

• 4-way valve control

• Signal communication to indoor unit

4MHz

Clock

frequency

circuit

High Power

factor Correction

DC)

®

Converter

(AC

sensor

Input current

Filter

Noise

AC)

®

Inverter

(DC

Relay

circuit

of P.M.V.

Driver circuit

Relay

circuit

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

valve

4-way

P.M.V.

heater

Freeze

prevention

(-ND model only)

220–240 V

For INDOOR UNIT

220–220 V

Discharge

temp. sensor

Outdoor air

temp. sensor

Suction temp.

– 26 –

sensor

Heat exchanger

temp.sensor

9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air
conditioner, which uses DC motor for the indoor fan
motor and the outdoor fan motor. And the capacity­proportional control compressor which can change the
motor speed in the range from 11 to 118 rps is
mounted. The DC motor drive circuit is mounted to the
indoor unit. The compressor and the inverter to control
fan motor are mounted to the outdoor unit.

The entire air conditioner is mainly controlled by the
indoor unit controller.

The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller,
and transfers the operation command to the outdoor
unit controller.

The outdoor unit controller receives operation com­mand from the indoor unit side, and controls the
outdoor fan and the pulse motor valve. (P.M.V)
Besides, detecting revolution position of the compres­sor motor, the outdoor unit controller controls speed of
the compressor motor by controlling output voltage of
the inverter and switching timing of the supply power
(current transfer timing) so that motors drive according
to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.

As the compressor adopts four-pole brushless
DC motor, the frequency of the supply power
from inverter to compressor is two-times cycles
of the actual number of revolution.

1. Role of indoor unit controller

The indoor unit controller judges the operation
commands from the remote controller and assumes
the following functions.

• Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)

•

Judgment of the indoor heat exchanger temper ature
by using heat exchanger sensor (TC sensor)
(Prevent-freezing control and super heat control, etc.)

• Judgment of inlet indoor heat exchanger tempera­ture by using heat exchanger sensor (TCJ sensor)
(Super heat control etc.)

• Louver motor control

• Indoor fan motor operation control

• LED (Light Emitting Diode) display control

• Transferring of operation command signal (Serial
signal) to the outdoor unit

• Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error

• Air purifier operation control

2. Role of outdoor unit controller

Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs its role.

• Compressor operation
control

• Operation control of
outdoor fan motor

• P.M.V. control

• 4-way valve control

• Detection of inverter input current and current
release operation

• Over-current detection and prevention operation
to IGBT module (Compressor stop function)

• Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)

• Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller

• Detection of outdoor temperature and operation
revolution control

• Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)



Operations followed to
judgment of serial



signal from indoor side.



3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller

The following three types of signals are sent from
the indoor unit controller.

• Operation mode set on the remote controller

• Compressor revolution command signal defined

by indoor temperature and set temperature
(Correction along with variation of room tempera­ture and correction of indoor heat exchanger
temperature are added.)

• Temperature of indoor heat exchanger

• For these signals ([Operation mode] and [Com-

pressor revolution] indoor heat exchanger tem­perature), the outdoor unit controller monitors the
input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.

4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller

The following signals are sent from the outdoor unit
controller.

• The current operation mode

• The current compressor revolution

• Outdoor temperature

• Existence of protective circuit operation

For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.

Contents of judgment are described below.

• Whether distinction of the current operation
status meets to the operation command signal

• Whether protective circuit operates
When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

– 27 –

9-2. Operation Description

9-2. 1. Basic operation...........................................................................................................29

1. Operation control ................................................................................................... 29

2. Cooling/Heating operation ..................................................................................... 30

3. AUTO operation...................................................................................................... 30

4. DRY operation........................................................................................................ 30

2. Indoor fan motor control.............................................................................................. 31

3. Outdoor fan motor control........................................................................................... 33

4. Capacity control.......................................................................................................... 34

5. Current release control ...............................................................................................34

6. Release protective control by temperature of indoor heat exchanger........................ 35

7. Quick heating control.................................................................................................. 36

8. Defrost control (Only in heating operation)................................................................. 36

9. Louver control.............................................................................................................37

1) Louver position.......................................................................................................37

2) Air direction adjustment ......................................................................................... 37

3) Swing ..................................................................................................................... 37

10. SLEEP MODE operation ............................................................................................ 38

11. Temporary operation................................................................................................... 39

12. Air purifying control [Detection of abnormality]........................................................... 39

13. Discharge temperature control ................................................................................... 40

14. Pulse motor valve (P.M.V.) control .............................................................................. 41

15. Clean operation ..........................................................................................................42

16. Clean operation release ............................................................................................43

17. Select switch on remote controller.............................................................................. 44

18. Set temp. correction.................................................................................................... 45

19. Outdoor Quiet control ................................................................................................. 46

20. 8°C HEAT operation (-ND model only) ....................................................................... 47

21. Cord heater control (-ND model only)......................................................................... 49

9-3. Auto Restart Function.............................................................................................50

9-3-1. How to Set the Auto Restart Function .................................................................... 50

9-3-2. How to Cancel the Auto Restart Function.............................................................. 51

9-3-3. Power Failure During Timer Operation ................................................................... 51

9-4. FILTER Indicator......................................................................................................51

9-4-1. How to Turn Off FILTER Indicator ............................................................................ 51

9-5. Remote Controller and Its Fuctions.......................................................................52

9-5-1. Parts Name of Remote Controller ........................................................................... 52

9-5-2. Name and Functions of Indications on Remote Controller .................................. 53

9-6. Hi PO WER Mode

([Hi POWER] button on the remote contr oller is pushed).................................... 54

– 28 –

Item

Operation flow and applicable data, etc.

Description

1. Basic
operation

1. Operation control

Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are
controlled.

1) The operation conditions are selected by the remote controller as shown in the below.

2) A signal is sent by ON button of the remote controller.

3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
shown in the below.

4) The indoor controller controls the indoor fan motor and louver motor.

5) The indoor controller sends the operation command to the outdoor controller, and sends/
receives the control status with a serial signal.

6) The outdoor controller controls the operation as shown in the left, and also controls the com­pressor, outdoor fan motor, 4-way valve and pulse motor valve.

Selection of

operation conditions

ON/OFF

Remote controller

Control contents of remote controller

• ON/OFF (Air conditioner/Air purifier)

• Operation select (COOL/HEAT/AUTO/DRY)

• Temperature setup

• Air direction

• Swing

• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)

• Sleep mode

• ON timer setup

• OFF timer setup

• High power

• 8˚C heat operation (-ND model only)

Signal receiving

Indoor unit control

Operation command

Serial signal send/receive

Serial signal send/receive

Outdoor unit control

Indoor unit

Indoor unit control

• Command signal generating function of
indoor unit operation

• Calculation function (temperature calculation)

• Activation compensation function of indoor fan

• Cold draft preventive function

• Timer function

• Indoor heat exchanger release control

Outdoor unit

Outdoor unit control

• Compressor speed control of inverter output

• Waveform composite function

• Calculation function
(Temperature calculation)

• AD conversion function

• Quick heating function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

• Defrost operation function

• Indoor fan motor

• Louver motor

~

Inverter

• Compressor

• Outdoor fan motor

• 4-way valve

• Pulse motor valve
(P.M.V.)

• Freeze prevention
heater
(-ND model only)

– 29 –

Item

Operation flow and applicable data, etc.

Description

1. Basic
operation

2. Cooling/Heating operation

The operations are performed in the follo wing parts by controls according to cooling/heating conditions.

1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal
starts being transferred form the indoor controller to the outdoor unit.

2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan motor
control” and the louver according to the contents of “9. Louver control”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve and
4-way valve according to the operation signal sent from the indoor unit.

Operation ON

Indoor unit control

Sending of operation command signal

Outdoor unit control

3. AUTO operation

Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(Ta) when starting AUTO operation.

*1. When reselecting the operation mode, the fan speed

is controlled by the previous operation mode.

Ta

Cooling operation

Ts + 1

Monitoring (Fan)

Ts – 1

Heating operation

Setup of remote controller

Indoor fan motor control / Louver control

Compressor revolution control / Outdoor fan motor control /
4-way valve control In cooling operation: ON

Pulse motor valve control

[ ]

In heating operation: OFF

1) Detects the room temperature (Ta) when
the operation started.

2) Selects an operation mode from Ta in
the left figure.

3) Fan operation continues until an
operation mode is selected.

4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
20°C or more, the fan operation is
performed with ”Super Ultra LOW” mode
for 3 minutes.
Then, select an operation mode.

5) If the status of compressor-OFF
continues for 15 minutes the room
temperature after selecting an operation
mode (COOL/HEAT), reselect an
operation mode.

4. DRY operation

DRY operation is performed according to the difference
between room temperature and the setup temperature
as shown below.

In DRY operation, fan speed is controlled in order to
prevent lowering of the room temperature and to avoid
air flow from blowing directly to persons.

[˚C]

Ta

+

1.0

+

0.5

L– (W5)

(W5+W3) / 2

SL (W3)

Tsc

Fan speed

– 30 –

1) Detects the room temperature (Ta) when
the DRY operation started.

2) Starts operation under conditions in the
left figure according to the temperature
difference between the room tempera­ture and the setup temperature (Tsc).
Setup temperature (Tsc)
= Set temperature on remote controller
(Ts) + (0.0 to 1.0)

3) When the room temperature is lower
1°C or less than the setup temperature,
turn off the compressor.