Toshiba RAS-3M18SACV-E, RAS-3M18SAV-E SERVICE MANUAL

SERVICE MANUAL

AIR-CONDITIONER

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

FILE NO. A06-013

SPLIT TYPE

RAS-3M18SAV-E

RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E

RAS-3M18SA C V-E

R410A

PRINTED IN JAPAN, May, 2007 ToMo

CONTENTS

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

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

3. REFRIGERANT R410A ........................................................................... 12

4. CONSTRUCTION VIEWS ........................................................................ 20

5. WIRING DIAGRAM .................................................................................. 22

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 24

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 25

8. CONTROL BLOCK DIAGRAM ................................................................ 29

9. OPERATION DESCRIPTION................................................................... 32

10. INSTALLATION PROCEDURE ................................................................ 57

11. HOW TO DIAGNOSE THE TROUBLE ...................................................... 73

12. HOW TO REPLACE THE MAIN P ARTS................................................... 93

13. EXPLODED VIEWS AND PARTS LIST ................................................. 112

– 2 –

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

Disconnection from the supply mains: The means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

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 RESISTORS, 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 –

2. SPECIFICATIONS

The indoor and outdoor units that can be used in combination are shown in the tables below.

Table of models that can be connected

Type

Heat pump

Cooling-only

Outdoor unit

RAS-B10SKVP–E RAS-B13SKVP–E RAS-B16SKVP–E RAS-M10SKV–E RAS-M13SKV–E RAS-M16SKV–E

RAS-3M18SAV-E

RAS-M10GDV–E RAS-M13GDV–E RAS-M16GDV–E RAS-M10SMUV–E RAS-M13SMUV–E RAS-M16SMUV–E RAS-M10SKCVP–E RAS-M13SKCVP–E RAS-M16SKCVP–E RAS-M10SKCV–E RAS-M13SKCV–E RAS-M16SKCV–E

RAS-3M18SACV-E

RAS-M10GDCV–E RAS-M13GDCV–E RAS-M16GDCV–E RAS-M10SMUCV–E RAS-M13SMUCV–E RAS-M16SMUCV–E

Table of models that can be used in combination

Type

Heat pump Cooling-only

Outdoor unit

RAS-3M18SAV-E RAS-3M18SACV-E

Combinations of indoor unit models that can be connected

Refer to page 8, 9 Refer to page 10

Indoor unit

NOTES

1-room connection is not an option for the indoor units (you cannot connect only one indoor unit). Be sure to connect indoor units in two rooms or more.

The contents noted in this service manual limit the indoor units to the RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E, RAS-M10SKCVP-E, RAS-M13SKCVP-E and RAS-M16SKCVP-E.

For other indoor units that can also be used in combination, see the service manual of each indoor unit.

Indoor unit

RAS-M10GDV-E RAS-M10GDCV-E RAS-M13GDV-E RAS-M13GDCV-E RAS-M16GDV-E RAS-M16GDCV-E RAS-M10SKV-E RAS-M10SKCV-E RAS-M13SKV-E RAS-M13SKCV-E RAS-M16SKV-E RAS-M16SKCV-E RAS-M10SMUV-E RAS-M10SMUCV-E RAS-M13SMUV-E RAS-M13SMUCV-E

File No.

A05-010

TBA

A06-015

RAS-M16SMUV-E RAS-M16SMUCV-E

– 5 –

2-1. Specifications

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E / RAS-3M18SAV-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 (Cooling/Heating) Medium (dB•A) noise Low (dB•A)

Indoor unit Depth (mm)

Outdoor unit

Piping Maximum length (per unit) (m) connection Minimum length (per unit) (m)

Wiring connection

Usable temperature range

Accessory

Indoor Outdoor

Unit model

Indoor

Outdoor Power consumption (W)

Indoor High (dB•A)

Outdoor Cooling

Unit model

Dimension Width (mm)

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

Dimension Width (mm)

Net weight (kg)

Compressor Type

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

Indoor unit Liquid side

Outdoor unit B unit liquid side/Gas side

Maximum length (total) (m) Maximum chargeless length (m) Additional refrigerant Maximum height difference (m) Name of refrigerant Weight (kg)

Indoor unit

Outdoor unit

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

Power factor (%) Starting current (A)

Unit model

Heating

Height (mm)

Depth (mm)

Motor output (W)

Model

Unit model

Gas side A unit liquid side/Gas side

C unit liquid side/Gas side

Power supply Interconnection Indoor (Cooling/Heating) (°C) Outdoor (Cooling/Heating) (°C) Installation plate Wireless remote controller Label Remote controller holder Pan head wood screw Purifying filter Deodorizing filter Batteries Mounting screw Installation manual Installation manual Specifications Drain nipple Water-proof rubber cap

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

220 – 240 V, 1 Ph, 50Hz / 220 V, 1 Ph, 60Hz

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

0.15 0.15 0.15 30 30 30

91 / 87 / 83 91 / 87 / 83 91 / 87 / 83

Cooling Heating

6.34 / 6.07 / 5.82 7.58 / 7.25 / 6.94 1340 1600

96 96

3.88 4.25

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

42 / 43 43 / 44 45 / 45 33 / 36 34 / 37 36 / 39 27 / 27 27 / 27 29 / 29

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 / 640 620 / 660

Twin rotary type with DC-inverter variable speed control

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

Ø6.35 Ø6.35 Ø6.35 Ø9.52 Ø9.52 Ø12.7

No additional refrigerant

3 Wires : includes earth 4 Wires : includes earth

5 to 43 / –15 to 24

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

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

RAS-3M18SAV-E

5.2

2.2 – 6.5

6.8

2.2 – 7.7

47 49

695 780 270

1100

DA130A1F-25F

2100

Flare connection

Ø6.35/ Ø9.52 Ø6.35/ Ø9.52 Ø6.35/ Ø9.52

2 50 50

R410A

1.50

21 to 32 / 0 to 28

2 (Ø3.1 × 16L)

6 (Ø4 × 25L)

– 6 –

RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E / RAS-3M18SACV-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 (Cooling/Heating) Medium (dB•A) noise Low (dB•A)

Indoor unit Depth (mm)

Outdoor unit

Piping Maximum length (per unit) (m) connection Minimum length (per unit) (m)

Wiring connection

Usable temperature range

Accessory

Indoor Outdoor

Unit model

Indoor

Outdoor Power consumption (W)

Indoor High (dB•A)

Outdoor Cooling

Unit model

Dimension Width (mm)

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

Dimension Width (mm)

Net weight (kg)

Compressor Type

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

Indoor unit Liquid side

Outdoor unit B unit liquid side/Gas side

Maximum length (total) (m) Maximum chargeless length (m) Additional refrigerant Maximum height difference (m) Name of refrigerant Weight (kg)

Indoor unit

Outdoor unit

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

Power factor (%) Starting current (A)

Unit model

Heating

Height (mm)

Depth (mm)

Motor output (W)

Model

Unit model

Gas side A unit liquid side/Gas side

C unit liquid side/Gas side

RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E

RAS-3M18SACV-E

5.2

2.2 – 6.5 — —

220 – 240 V, 1 Ph, 50Hz / 220 V, 1 Ph, 60Hz

RAS-M10SKCVP-E RAS-M13SKCVP-E RAS-M16SKCVP-E

0.15 0.15 0.15 30 30 30

91 / 87 / 83 91 / 87 / 83 91 / 87 / 83

Cooling Heating

9.34 / 6.07 / 5.82 — 1340 —

96 —

—

3.88 —

RAS-M10SKCVP-E RAS-M13SKCVP-E RAS-M16SKCVP-E

42 / — 43 / — 45 / — 33 / — 34 / — 36 / — 27 / — 27 / — 29 / —

47 —

RAS-M10SKCVP-E RAS-M13SKCVP-E RAS-M16SKCVP-E

250 250 250 790 790 790 208 208 208

999

30 30 30

550 / — 570 / — 620 / —

695 780 270

1100

Twin rotary type with DC-inverter variable speed control

DA130A1F-25F

2100

Flare connection

RAS-M10SKCVP-E RAS-M13SKCVP-E RAS-M16SKCVP-E

Ø6.35 Ø6.35 Ø6.35 Ø9.52 Ø9.52 Ø12.7

Ø6.35/ Ø9.52 Ø6.35/ Ø9.52 Ø6.35/ Ø9.52

2 50 50

No additional refrigerant

R410A

1.50 3 Wires : includes earth 4 Wires : includes earth

21 to 32 / —

5 to 43 / —

1 1 2 1

2 (Ø3.1 × 16L)

1 1 2

6 (Ø4 × 25L)

1 1 1

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

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

– 7 –

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

Outdoor Unit : RAS-3M18SAV-E

Power

supply

(V)

220

230

240

Operating

status

1 unit

2 units

3 units

1 unit

2 units

3 units

1 unit

2 units

3 units

Indoor unit

ABC

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

Unit capacity (kW) ABC

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

Cooling

capacity

(kW)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

Power

consumption

(W)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

Operating

current

(A)

3.54

(1.94 to 4.20)

5.12

(1.94 to 7.12)

7.83

(1.94 to 8.34)

6.32

(2.15 to 8.43)

6.32

(2.15 to 8.43)

6.56

(2.15 to 8.53)

6.56

(2.15 to 8.53)

6.34

(2.51 to 9.14)

6.34

(2.51 to 9.74)

6.34

(2.51 to 9.74)

6.34

(2.51 to 9.74)

3.39

(1.86 to 4.02)

4.90

(1.86 to 6.81)

7.49

(1.86 to 7.98)

6.04

(2.06 to 8.07)

6.04

(2.06 to 8.07)

6.27

(2.06 to 8.16)

6.27

(2.06 to 8.16)

6.07

(2.40 to 8.74)

6.07

(2.40 to 9.32)

6.07

(2.40 to 9.32)

6.07

(2.40 to 9.32)

3.25

(1.78 to 3.85)

4.69

(1.78 to 6.53)

7.17

(1.78 to 7.65)

5.79

(1.97 to 7.73)

5.79

(1.97 to 7.73)

6.01

(1.97 to 7.82)

6.01

(1.97 to 7.82)

5.82

(2.30 to 8.38)

5.82

(2.30 to 8.93)

5.82

(2.30 to 8.93)

5.82

(2.30 to 8.93)

EER

4.17

3.27

2.69

3.64

3.65

3.81

3.88

4.17

3.27

2.69

3.64

3.65

3.81

3.88

4.17

3.27

2.69

3.64

3.65

3.81

3.88

Outdoor

noise

(dB)

• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/–°C.

– 8 –

Outdoor Unit : RAS-3M18SAV-E

Power

supply

(V)

220

230

240

Operating

status

1 unit

2 units

3 units

1 unit

2 units

3 units

1 unit

2 units

3 units

Indoor unit

ABC

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

Unit capacity (kW) ABC

3.4 ––

4.3 ––

5.2 ––

3.10 3.10 –

3.46 2.74 –

3.87 2.53 –

3.20 3.20 –

2.23 2.23 2.23

2.63 2.08 2.08

2.95 1.93 1.93

2.44 2.44 1.93

3.4 ––

4.3 ––

5.2 ––

3.10 3.10 –

3.46 2.74 –

3.87 2.53 –

3.20 3.20 –

2.23 2.23 2.23

2.63 2.08 2.08

2.95 1.93 1.93

2.44 2.44 1.93

3.4 ––

4.3 ––

5.2 ––

3.10 3.10 –

3.46 2.74 –

3.87 2.53 –

3.20 3.20 –

2.23 2.23 2.23

2.63 2.08 2.08

2.95 1.93 1.93

2.44 2.44 1.93

Heating

capacity

(kW)

3.4

(0.8 to 4.5)

4.3

(0.8 to 4.8)

5.2

(0.8 to 6.0)

6.2

(1.8 to 7.3)

6.2

(1.8 to 7.3)

6.4

(1.8 to 7.5)

6.4

(1.8 to 7.5)

6.7

(2.2 to 7.5)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

3.4

(0.8 to 4.5)

4.3

(0.8 to 4.8)

5.2

(0.8 to 6.0)

6.2

(1.8 to 7.3)

6.2

(1.8 to 7.3)

6.4

(1.8 to 7.5)

6.4

(1.8 to 7.5)

6.7

(2.2 to 7.5)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

3.4

(0.8 to 4.5)

4.3

(0.8 to 4.8)

5.2

(0.8 to 6.0)

6.2

(1.8 to 7.3)

6.2

(1.8 to 7.3)

6.4

(1.8 to 7.5)

6.4

(1.8 to 7.5)

6.7

(2.2 to 7.5)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

6.8

(2.2 to 7.7)

Power

consumption

(W)

1050

(300 to 1500)

1470

(300 to 1600)

1850

(300 to 2050)

1720

(360 to 2140)

1720

(360 to 2140)

1840

(360 to 2200)

1840

(360 to 2200)

1580

(420 to 1950)

1600

(420 to 2030)

1600

(420 to 2030)

1600

(420 to 2030)

1050

(300 to 1500)

1470

(300 to 1600)

1850

(300 to 2050)

1720

(360 to 2140)

1720

(360 to 2140)

1840

(360 to 2200)

1840

(360 to 2200)

1580

(420 to 1950)

1600

(420 to 2030)

1600

(420 to 2030)

1600

(420 to 2030)

1050

(300 to 1500)

1470

(300 to 1600)

1850

(300 to 2050)

1720

(360 to 2140)

1720

(360 to 2140)

1840

(360 to 2200)

1840

(360 to 2200)

1580

(420 to 1950)

1600

(420 to 2030)

1600

(420 to 2030)

1600

(420 to 2030)

Operating

current

(A)

5.08

(1.82 to 7.10)

6.96

(1.82 to 7.58)

8.67

(1.82 to 9.51)

8.14

(2.15 to 9.93)

8.14

(2.15 to 9.93)

8.71

(2.15 to 10.20)

8.71

(2.15 to 10.20)

7.48

(2.51 to 9.14)

7.58

(2.51 to 9.42)

7.58

(2.51 to 9.42)

7.58

(2.51 to 9.42)

4.86

(1.74 to 6.79)

6.66

(1.74 to 7.25)

8.29

(1.74 to 9.09)

7.79

(2.06 to 9.49)

7.79

(2.06 to 9.49)

8.33

(2.06 to 9.76)

8.33

(2.06 to 9.76)

7.16

(2.40 to 8.74)

7.25

(2.40 to 9.01)

7.25

(2.40 to 9.01)

7.25

(2.40 to 9.01)

4.65

(1.67 to 6.51)

6.38

(1.67 to 6.94)

7.95

(1.67 to 8.72)

7.47

(1.97 to 9.10)

7.47

(1.97 to 9.10)

7.99

(1.97 to 9.35)

7.99

(1.97 to 9.35)

6.86

(2.30 to 8.38)

6.94

(2.30 to 8.63)

6.94

(2.30 to 8.63)

6.94

(2.30 to 8.63)

COP

3.24

2.93

2.81

3.60

3.48

4.24

4.25

3.24

2.93

2.81

3.60

3.48

4.24

4.25

3.24

2.93

2.81

3.60

3.48

4.24

4.25

Outdoor

noise

(dB)

• The above specification values are those under the conditions that the indoor DB/WB=20/–°C and the outdoor DB/WB=7/6°C.

– 9 –

Outdoor Unit : RAS-3M18SACV-E

Power

supply

(V)

220

230

240

Operating

status

1 unit

2 units

3 units

1 unit

2 units

3 units

1 unit

2 units

3 units

Indoor unit

ABC

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

10 ––

13 ––

16 ––

10 10 –

13 10 –

16 10 –

13 13 –

10 10 10

13 10 10

16 10 10

13 13 10

Unit capacity (kW) ABC

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

2.5 ––

3.5 ––

4.5 ––

2.40 2.40 –

2.80 2.00 –

3.21 1.79 –

2.50 2.50 –

1.70 1.70 1.70

2.14 1.53 1.53

2.46 1.37 1.37

1.92 1.92 1.37

Cooling

capacity

(kW)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

2.5

(1.4 to 3.2)

3.5

(1.4 to 4.2)

4.5

(1.4 to 5.0)

4.8

(1.8 to 5.9)

4.8

(1.8 to 5.9)

5.0

(1.8 to 6.2)

5.0

(1.8 to 6.2)

5.1

(2.2 to 6.3)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

5.2

(2.2 to 6.5)

Power

consumption

(W)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

600

(320 to 850)

1070

(320 to 1520)

1670

(320 to 1780)

1320

(360 to 1800)

1320

(360 to 1800)

1370

(360 to 1820)

1370

(360 to 1820)

1340

(420 to 1970)

1340

(420 to 2100)

1340

(420 to 2100)

1340

(420 to 2100)

Operating

current

(A)

3.54

(1.94 to 4.20)

5.12

(1.94 to 7.12)

7.83

(1.94 to 8.34)

6.32

(2.15 to 8.43)

6.32

(2.15 to 8.43)

6.56

(2.15 to 8.53)

6.56

(2.15 to 8.53)

6.34

(2.51 to 9.14)

6.34

(2.51 to 9.74)

6.34

(2.51 to 9.74)

6.34

(2.51 to 9.74)

3.39

(1.86 to 4.02)

4.90

(1.86 to 6.81)

7.49

(1.86 to 7.98)

6.04

(2.06 to 8.07)

6.04

(2.06 to 8.07)

6.27

(2.06 to 8.16)

6.27

(2.06 to 8.16)

6.07

(2.40 to 8.74)

6.07

(2.40 to 9.32)

6.07

(2.40 to 9.32)

6.07

(2.40 to 9.32)

3.25

(1.78 to 3.85)

4.69

(1.78 to 6.53)

7.17

(1.78 to 7.65)

5.79

(1.97 to 7.73)

5.79

(1.97 to 7.73)

6.01

(1.97 to 7.82)

6.01

(1.97 to 7.82)

5.82

(2.30 to 8.38)

5.82

(2.30 to 8.93)

5.82

(2.30 to 8.93)

5.82

(2.30 to 8.93)

EER

4.17

3.27

2.69

3.64

3.65

3.81

3.88

4.17

3.27

2.69

3.64

3.65

3.81

3.88

4.17

3.27

2.69

3.64

3.65

3.81

3.88

Outdoor

noise

(dB)

• The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/WB=35/–°C.

– 10 –

2-2-1. Operation Characteristic Curve

RAS3M18SAV-E, RAS-3M18SACV-E RAS-3M18SAV-E

• Conditions

Indoor : DB27˚C/WB19˚C

Outdoor: DB35˚C/WB24˚C Indoor air flow: High

Pipe length : 5m × 3 3 units operating

7 6 5 4

Current (A)

3 2 1 0

0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120110

220V

230V

240V

Compressor speed (rps)

• Conditions

Indoor : DB20˚C/WB15˚C

Outdoor: DB7˚C/WB6˚C Indoor air flow: High

Pipe length : 5m × 3 3 units operating

7 6 5 4

Current (A)

3 2 1 0

2-2-2. Capacity Variation Ratio According to Outdoor Temperature

RAS3M18SAV-E, RAS-3M18SACV-E RAS-3M18SAV-E

105 100

95 90 85 80 75 70 65

Capacity ratio (%)

60 55 50

32 33 34 35 36 37 38 39 43 –15 –10 –5 0 5 7 10

Current limited start

• Conditions Indoor : DB27˚C/WB19˚C Indoor air flow: High Pipe length : 5m × 3 3 units operating

40 41 42

Outdoor temp. (˚C)

110 100

90 80 70 60

Capacity ratio (%)

50 40

• Conditions Indoor : DB20˚C/WB15˚C Indoor air flow: High Pipe length : 5m × 3 3 units operating

220V

230V

240V

Compressor speed (rps)

Outdoor temp. (˚C)

2-2-3. Capacity Variation Ratio According to Pipe Length

RAS3M18SAV-E, RAS-3M18SACV-E RAS-3M18SAV-E

110

105

100

Coolimg capacity ratio (%)

• Conditions Indoor : DB27˚C/WB19˚C Outdoor: DB35˚C/WB24˚C Indoor air flow: High 3 units operating

Standard pipe length 15m

Maximum pipe length 50m

Total pipe length (m)

6050403020100

110

105

100

Heating capacity ratio (%)

Standard pipe length 15m

Maximum pipe length 50m

– 11 –

• Conditions Indoor : DB20˚C/WB15˚C Outdoor: DB7˚C/WB6˚C Indoor air flow: High 3 units operating

Total pipe length (m)

6050403020100

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 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 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.

– 12 –

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

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

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

– 13 –

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 (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

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

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 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 1.5 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

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

– 14 –

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

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

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)

– 15 –

16 (160), 18 (180)

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

3-3. Tools

3-3-1. Required T ools

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.

4 5 6

7 8

(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

(Note 2)

R410A

Whether conventional equipment can be used

*(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 run check.

1. Clamp meter

2. Thermometer

3. Insulation resistance tester

4. Electroscope

– 16 –

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

– 17 –

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.

– 18 –

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.

Flow meter

Stop valve

Nitrogen gas

cylinder

From Nitrogen cylinder

Pipe

Nitrogen gas

Rubber plug

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

– 19 –

4. CONSTRUCTION VIEWS

Hanging section

Stud bolt hole for Ø6

Outline of installation plate

Lower part hanging section

Center line of installation plateCenter line of main unit

Lower part hanging section

Stud bolt hole for Ø8 to Ø10

Product outline

( )

Minimum distance to wall

674

304

790

30491 91

2591

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

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, M16SKCVP-E: Ø12.7)

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

47 or more

74 or more140 or more

( )

Minimum distance to ceiling

( )

Remote controller holder

Wireless remote controller

125.5

163

58 19

Part of Remote controller

WH-H04JE

(Heat pump model)

WC-H04JE

(Cooling only model)

Minimum distance to wall

74.5

4-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E

– 20 –

4-2. Outdoor Unit

RAS-3M18SAV-E, RAS-3M18SACV-E

– 21 –

5. WIRING DIAGRAM

5-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E (Heat pump models) RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E (Cooling only models)

To outdoor unit

Air Purifier

Electrode

BRW

High-voltage

Power Supply

1 1

Indoor T erminal Block

BLK

WHI

113

CN01CN02 CN51

RED

321

Heat Exchanger

GRN & YEL

CN41

(RED) 121

Heat Exchanger Sensor (TCJ)

BLK

CN63 (YEL)

121

BRW BRW RED

4433221

CN42 (WHI)

BRW

Micro SW

BLU

Heat Exchanger Sensor (TC)

BLK

Thermo Sensor (TA)

BLK

Wireless Unit Assembly

BLK

WHI

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

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

10 10

CN21 (WHI)

1 2 3

CN62 (BLU)

CN61

(WHI)

Main P. C. Board

MCC-5045

F01 Fuse AC 250V T3.15A

Varistor

R01

Line Filter

RED

BLK

WHI

4 4

CN31 (WHI)

CN32 (WHI)

DC5V

DC12V

Circuit

Power Supply

–

5 5 6 6

1 2 3 4 5 5

1 2 3 4

YEL

BLU

WHI

YEL

CN22 (WHI)

1 2 3 4 4 5 5

Fan Motor

DC Motor

1 2 3

Louver Motor

– 22 –

5-2. Outdoor Unit

RAS-3M18SAV-E, RAS-3M18SACV-E

NOTE

IGBT : Insulated Gate Bipolar Transistor PMV : Pulse Motor Valve TD : Discharge Temp. sensor TGa to TGc : Temp. sensor at A to C unit gas side TO : Outdoor Temp. sensor TE : Evaporator Temp. sensor TS : SuctionTemp. sensor ∗1 Heat Pump model only

Thermostat for compressor

ORN ORN

4-way valve coil

Fan motor

PMV

GRY PNK

YEL BLK

WHI

RED

WHI GRY ORN RED

YEL

BLK

WHI GRY ORN RED

YEL

BLK

WHI GRY ORN RED

YEL

BLK

212

313

P501

P500

∗1

CN705

CN301

CN300

CN703

RED

CN702

WHI

CN701

YEL

RED

SUB P.C. Board

(MCC-818)

Photo coupler

P03 P04

ORN

Fan

circuit

F300 Fuse, T3.15A 250V

F500 Fuse, T6.3A 250V

P07 P05

WHI PNK

Color Identification

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

RED

2121212

CN802

313

CN607

CN606

CN605

CN604

∗1

CN603

CN602

CN601

CN302

CN800

CN303

CN501

GRN

313

BRW

313

YEL

212

BLU

212

BLK

313

212

313

5 5 5 5 4 4 4 4 3 3 3 3 212

212

313

BLU YEL

BLK WHI BLU RED PNK

PUR

ORN

WHI RED

TGc

TGb

TGa

Compressor

CN22 CN21

P.C. Board

(MCC-1438)

Power supply circuit

(For P.C. Board)

313

CN04

CN06

212

CN05

5 5 313

CN13

F01 Fuse T25A 250V

CN01 CN02

BLK

WHI

RED

3 2 1 3 2 1

F04 Fuse T3.15A 250V

Power relay

RY02

RB05

CN20

T02 CT

Varistor

WHI

Reactor

T03 CT

T04 CT

C13 C12 C11 C10

Surge

absorber

F02 Fuse T25A 250V

P20 P19

P18 P17

P23 P24

P13 P12

P22 P21

P09 P08

CN03

BLK

BU EU BV EV BW EW BX BY BZ

YEL

BLU

G C E

+ ~ ~

RED

212

BRW

212

Q404

DB02

DB01

Q200

IGBT

(PFC)

Diode (PFC)

Diode

IGBT

module

block

Reactor

Indoor unit A

1 2 3 L N 2 311 2 3

Indoor unit B

Terminal block

– 23 –

Power supply

220 240V

220 220V ~60Hz

50Hz

Capacitor

Indoor unit C

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E

No.

Fan motor (for indoor)

Room temp. sensor (TA-sensor)

Heat exchanger temp. sensor (TC-sensor)

Heat exchanger temp. sensor (TCJ-sensor)

Louver motor

Parts name

6-2. Outdoor Unit

RAS-3M18SAV-E, RAS-3M18SACV-E

∗1

No.

SC coil (Noise filter) (L01), (L03)

SC coil (Noise filter) (L02)

DC-DC transformer

Outside fan motor

Relay (4-way valve)

Relay (Power relay)

Discharge temp. sensor

(TD-sensor)

Outside air temp. sensor

(TO-sensor)

Temp. sensor at A room

gas side (TGA-sensor)

Temp. sensor at B room

gas side (TGB-sensor)

Temp. sensor at C room

gas side (TGC-sensor)

Evaporator temp. sensor

(TE-sensor)

Suction temp. sensor

(TS-sensor)

Terminal block (9P)

Fuse

Electrolytic capacitor

Transistor module

Compressor

Compressor thermo.

Diode block (Rectifire)

Reactor (Main)

Reactor (Sub)

Parts name

For protection of switching power source (F04) For protection of power factor converter circuit

breakage For protection of inverter input overcurrent For protection of switching power source (F300) For protection of power source

Type

MF-280-30-5R

( – ) ( – ) ( – )

MP24Z3N

Model name

SC-15-06J-B

SC-20-03J

SWT-75

ICF-140-43-2R

G5NB-1A

G4A-1A-PE-CA

(Inverter attached)

—

LLQ2G501KHUATF

6MBI25GS-060-51A

DA130A1F-25F

US622KXTMQO

D25XB60 CH-47-Z-T CH-43-Z-T

Specifications

DC280–340V, 30W 10kΩ at 25°C 10kΩ at 25°C 10kΩ at 25°C Output (Rated) 1W, 16 poles, DC12V

Rating

AC 250V, 15A, 0.6mH AC 250V, 20A, 0.3mH Primary side DC 240 – 390V

Secondary side : 7V × 1, 13V × 1

16V × 3 DC 140V, 43W Coil : DC 12V

Contact : 2A, AC250V Coil : DC 12V

Contact : 20A, AC250V 64kΩ (20°C)

10kΩ (25°C)

10kΩ (25°C) AC 250V, 20A

AC 250V, 3.15A AC 250V, 25A AC 250V, 25A

AC 250V, 3.15A AC 250V, 6.3A DC 400V, 500µF 600V, 25A 3 phases, 4 poles, 1100W OFF : 125 ± 4°C, ON : 90 ± 5°C AC 600V, 25A L = 8mH, 16A L = 10mH, 1A

NOTE) ∗1 : Heat pump model only.

– 24 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Indoor Unit, Outdoor Unit

RAS-B10SKVP-E, RAS-B13SKVP-E, RAS-B16SKVP-E / RAS-3M18SAV-E

Temp. measurement

C room

B room

C room

B room

INDOOR UNIT A

Indoor heat

exchanger

Cross flow fan

Connecting pipe Thickness : 0.8 mm

9.52 : RAS-B10SKVP-E RAS-B13SKVP-E

12.7 : RAS-B16SKVP-E

Pressure

measurement Gauge attaching port

Vacuum pump connecting port

Accumulating tank

54 370

Connecting pipe Thickness : 0.8 mm

6.35

Sectional shape of heat insulator

( 9.52) ( 9.52) ( 9.52) ( 6.35) ( 6.35) ( 6.35)

Strainer

TGaTGbTGc

Pulse motor valve at liquid side (UKV-18D64)

Compressor DA130A1F-25F

Per 1 unit Max. : 20m Min. : 2m

Total Max. : 50m

Allowable height

difference : 10m

Allowable pipe length

Temp. measurement

Outdoor heat

exchanger

Propeller fan

OUTDOOR UNIT

Refrigerant amount : 1.5kg (R410A)

NOTE : Gas leak check position Refrigerant flow (Cooling)

Refrigerant flow (Heating)

NOTE :

• The maximum pipe length of this air conditioner is 50 m. The additional chaging of refrigerant is unneces-

sary because this air cinditioner is designed with charge-less specification.

• Never connect one indoor unit only. Two or more indoor units should be connected.

– 25 –

RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E / RAS-3M18SACV-E

Temp. measurement

C room

B room

C room

B room

INDOOR UNIT A

Indoor heat

exchanger

Cross flow fan

Connecting pipe Thickness : 0.8 mm

9.52 : RAS-M10SKCVP-E RAS-M13SKCVP-E

12.7 : RAS-M16SKCVP-E

Pressure

measurement Gauge attaching port

Vacuum pump connecting port

Accumulating tank

54 370

Connecting pipe Thickness : 0.8 mm

6.35

Sectional shape of heat insulator

( 9.52) ( 9.52) ( 9.52) ( 6.35) ( 6.35) ( 6.35)

Strainer

TGaTGbTGc

Pulse motor valve at liquid side (UKV-18D64)

Compressor DA130A1F-25F

Per 1 unit Max. : 20m Min. : 2m

Total Max. : 50m

Allowable height

difference : 10m

Allowable pipe length

Outdoor heat

exchanger

Temp. measurement

Propeller fan

OUTDOOR UNIT

Refrigerant amount : 1.5kg (R410A)

NOTE :

Gas leak check position Refrigerant flow

NOTE :

• The maximum pipe length of this air conditioner is 50 m. The additional chaging of refrigerant is unneces-

sary because this air cinditioner is designed with charge-less specification.

• Never connect one indoor unit only. Two or more indoor units should be connected.

– 26 –

7-2. Operation Data

Outdoor Unit : RAS-3M18SAV-E

Temperature

condition

Indoor Outdoor

27 /19°C 35 / –°C

No. of

operating

units

1 unit

2 units

3 units

Operating

combination (Unit)

ABC

10 –– 13 –– 16 –– 10 10 – 13 10 – 16 10 – 13 13 – 10 10 10 13 10 10 16 10 10 13 13 10

Standard pressure

P (MPa)

0.8 to 1.0

0.7 to 0.9

0.6 to 0.8

0.8 to 1.0

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

11 to 13 42 to 44

8 to 10 46 to 48

6 to 8 49 to 51 13 to 14 48 to 50 13 to 14 48 to 50 13 to 14 48 to 50 13 to 14 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50

Indoor

fan

(Manual)

High High High High High High High High High High High

Outdoor

fan

MED MED MED MED MED MED MED MED MED MED MED

NOTES :

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

2. Connecting piping condition : 5 meters × 3 units (5m/each indoor unit)

Compressor

revolution

(rps)

32 52 75 63 63 65 65 62 62 62 62

Outdoor Unit : RAS-3M18SAV-E

Temperature

condition

Indoor Outdoor

20 / –°C7 / 6°C

No. of

operating

units

1 unit

2 units

3 units

Operating

combination (Unit)

ABC

10 –– 13 –– 16 –– 10 10 – 13 10 – 16 10 – 13 13 – 10 10 10 13 10 10 16 10 10 13 13 10

Standard pressure

P (MPa)

2.6 to 2.8

3.1 to 3.3

3.5 to 3.7

2.7 to 2.9

2.8 to 3.0

2.2 to 2.4

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

42 to 44 2 to 4 48 to 50 1 to 3

51 to 53 1 to 3

36 to 38 –1 to 1 36 to 38 –1 to 1 36 to 38 –1 to 1 36 to 38 –1 to 1 32 to 34 –1 to 1 32 to 34 –1 to 1 32 to 34 –1 to 1 32 to 34 –1 to 1

Indoor

fan

(Manual)

High High High High High High High High High High High

Outdoor

fan

MED MED MED MED MED MED MED MED MED MED MED

NOTES :

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

2. Connecting piping condition : 5 meters × 3 units (5m/each indoor unit)

Compressor

revolution

(rps)

57 70 81 95 95 98 98 92 93 93 93

– 27 –

Outdoor Unit : RAS-3M18SACV-E

Temperature

condition

Indoor Outdoor

27 /19°C 35 / –°C

No. of

operating

units

1 unit

2 units

3 units

Operating

combination (Unit)

ABC

10 –– 13 –– 16 –– 10 10 – 13 10 – 16 10 – 13 13 – 10 10 10 13 10 10 16 10 10 13 13 10

Standard pressure

P (MPa)

0.8 to 1.0

0.7 to 0.9

0.6 to 0.8

0.8 to 1.0

Heat exchanger

pipe temp.

T1 (°C) T2 (°C)

11 to 13 42 to 44

8 to 10 46 to 48

6 to 8 49 to 51 13 to 14 48 to 50 13 to 14 48 to 50 13 to 14 48 to 50 13 to 14 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50 16 to 18 48 to 50

Indoor

fan

(Manual)

High High High High High High High High High High High

Outdoor

fan

MED MED MED MED MED MED MED MED MED MED MED

NOTES :

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

2. Connecting piping condition : 5 meters × 3 units (5m/each indoor unit)

Compressor

revolution

(rps)

32 52 75 63 63 65 65 62 62 62 62

– 28 –

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

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

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

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

Hi-POWER

Infrared Rays, 36.7kHz

SLEEP MODE

– 29 –

Air Purifier

RAS-M10SKCVP-E, RAS-M13SKCVP-E, RAS-M16SKCVP-E

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

• 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

REMOTE CONTROLLER

Serial Signal Communication

(Operation Command and Information)

Remote Controller

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

Hi-POWER

Infrared Rays, 36.7kHz

SLEEP MODE

– 30 –

Air Purifier

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