Toshiba RAS-M10SKCV, RAS-M22NKCV1, RAS-M22SKCV, RAS-4M26SACV, RAS-M13SKCV SERVICE MANUAL

FILE NO.A07-007

Revised 1: Jul., 2008

SERVICE MANUAL

AIR-CONDITIONER

SPLIT TYPE

RAS-M10SKCV, RAS-M13SKCV,

RAS-M16SKCV, RAS-M22SKCV,

RAS-M22NKCV1

/ RAS-4M26SACV

R410A

PRINTED IN JAPAN, Jul., 2008 ToMo

CONTENTS

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

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

3. REFRIGERANT R410A ........................................................................... 13

4. CONSTRUCTION VIEWS ........................................................................ 21

5. WIRING DIAGRAM.................................................................................. 25

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 29

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 30

8. CONTROL BLOCK DIAGRAM................................................................ 32

9. OPERATION DESCRIPTION ................................................................... 34

10. INSTALLATION PROCEDURE ................................................................ 60

11. HO W TO DIA GNOSE THE PROBLEM..................................................... 84

12. HO W TO REPLA CE THE MAIN P ARTS................................................. 112

13. EXPLODED VIEWS AND PARTS LIST ................................................. 134

1. SAFETY PRECAUTIONS

Power supply cord of outdoor unit shall be more than 2.5 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 higher than that of refr igerant R22. Accompanied with the adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into the new type refrigerant R410A air conditioner circuit.

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

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

CAUTION

TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY

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

DANGER

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

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

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

DANGER: HIGH VOLTAGE

The high voltage circuit is incorporated. Be careful to do the check service, as the electric shock may be caused in case of touching parts

on the P.C. board by hand.

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

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

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

– 3 –

• 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 perf ormed 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. Inappropriate grounding may cause electric shock.

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

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 par ts 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 problem 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

Cooling-only

Outdoor unit

RAS-4M26SACV

Indoor unit RAS-

M10SKCV M13SKCV M16SKCV M22NKCV1 M22SKCV

M10SDCV M13SDCV M16SDCV M22SDCV —

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-M10SKCV, RAS-M13SKCV, RAS-M16SKCV, RAS-M22SKCV and RAS-M22NKCV1.

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

Indoor unit

RAS-M10SDCV

RAS-M13SDCV

RAS-M16SDCV

File No.

A07-002

RAS-M22SDCV

– 5 –

2-1. Specifications

<Cooling only Models> RAS-M10SKCV, RAS-M13SKCV, RAS-M16SKCV, RAS-M22NKCV1 / RAS-4M26SACV

Unit model Cooling capacity (kW)

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

Electric characteristics

COP (Cooling)

Operating noise

Indoor unit Depth (mm)

Outdoor unit

Piping connection

Wiring connection Usable

temperature range

Accessory

Indoor Outdoor

Unit model

Indoor

Total Power consumption (W)

Indoor (Cooling/Heating)

Outdoor 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

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

Power supply Interconnection Indoor (Cooling/Heating) (°C) Outdoor (Cooling/Heating) (°C)

Indoor unit

Outdoor unit

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

Power factor (%) Starting current (A)

Unit model High dB (A) Medium dB (A) Low dB (A) Cooling dB (A) Heating dB (A)

Height (mm)

Height (mm) Depth (mm) Motor output (W) Model

Unit model Gas side

A unit liquid side/gas side B unit liquid side/gas side C unit liquid side/gas side D unit liquid side/gas side

Installation plate Wireless remote controller Batteries Remote controller holder Pan head wood screw Super Oxi Deo filter Super Steriling filter Zeolite plus sasa filter Bio Gingo filter Mounting screw Owner’s manual Installation manual Owner’s manual Installation manual

• 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-M10SKCV, RAS-M13SKCV, RAS-M16SKCV, RAS-M22NKCV1

RAS-4M26SACV

7.5

3.7 – 10.0 — —

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

RAS-M10SKCV RAS-M13SKCV RAS-M16SKCV RAS-M22NKCV1

0.21 / 0.20 / 0.19 0.21 / 0.20 / 0.19 0.21 / 0.20 / 0.19 0.31 / 0.30 / 0.29 35 35 30 45 75 75 65 45

Cooling

10.54 / 10.08 / 9.66 2200

95

10.54 / 10.08 / 9.66

3.41

RAS-M10SKCV RAS-M13SKCV RAS-M16SKCV RAS-M22NKCV1

38 / – 39 / – 45 / – 45 / – 33 / – 33 / – 40 / – 42 / – 26 / – 26 / – 30 / – 37 / –

48

—

RAS-M10SKCV RAS-M13SKCV RAS-M16SKCV RAS-M22NKCV1

275 275 275 298 790 790 790 998 205 205 205 220

99913

20 20 30 30

535 / – 565 / – 690 / – 850 / –

795 900 320

61

2000

Twin rotary type with DC-inverter variable speed control

DA220A1F-20L

60

High : 3200, Medium : 2800

Flare connection

RAS-M10SKCV RAS-M13SKCV RAS-M16SKCV RAS-M22NKCV1

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

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

25

2 70 70

No additional refrigerant

15

R410A

2.20 3 wires : includes earth 4 wires : includes earth

21 – 32 / –

10 – 46 / – 11 11 22 11

2 (Ø3.1 × 16L) 2 (Ø3.1 × 16L)

1 — 1 —

— 1 — 1

6 (Ø4 × 25L) 6 (Ø4 × 25L)

11 11

1 1

– 6 –

RAS-M22SKCV

Unit model Cooling capacity (kW)

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

Electric characteristics

Operating noise Medium dB (A)

Indoor unit

Piping connection Indoor unit

Wiring connection Indoor unit Interconnection Usable temperature range Indoor (°C)

Accessory Indoor unit

Indoor Outdoor

Unit model

Indoor

Indoor Sound presure level

Dimension Width (mm)

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

Name of refrigerant

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

Low dB (A) Height (mm)

Depth (mm)

Liquid side Gas side

Installation plate Wireless remote controller Batteries Remote controller holder Pan head wood screw Super Oxi Deo filter Super Steriling filter Mounting screw Owner’s manual Installation manual

RAS-M22SKCV

RAS-4M26SACV

7.5

3.7 – 10.0 — —

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

RAS-M22SKCV

0.38 / 0.36 / 0.35 50 60 47 41 35

320

1050

228

13 30

1080

Flare connection

Ø6.35 Ø12.7

R410A

4 wires : includes earth

21 – 32

1 1 2 1

2 (Ø3.1 × 16L)

1 1

6 (Ø4 × 25L)

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

Current

limited

Full

operation

Power

supply

(V)

220

Operating

status

1 unit

2 units

3 units

4 units

Indoor unit

ABCD

10 ——— 13 ——— 16 ——— 22 ——— 10 10 —— 13 10 —— 16 10 —— 13 13 —— 16 13 —— 16 16 —— 22 10 —— 22 13 —— 22 16 —— 22 22 —— 10 10 10 — 13 10 10 — 16 10 10 — 13 13 10 — 16 13 10 — 13 13 13 — 16 16 10 — 16 13 13 — 16 16 13 — 16 16 16 — 22 10 10 — 22 13 10 — 22 13 13 — 22 16 10 — 22 16 13 — 10 10 10 10 13 10 10 10 16 10 10 10 13 13 10 10 16 13 10 10 13 13 13 10 16 13 13 10 13 13 13 13 16 16 10 10 22 10 10 10

Operating

ABCD

2.70 ———

3.70 ———

4.50 ———

6.00 ———

2.70 2.70 ——

3.41 2.49 ——

3.94 2.36 ——

3.15 3.15 ——

3.73 3.07 ——

3.60 3.60 ——

4.97 2.23 ——

4.64 2.86 ——

4.29 3.21 ——

3.75 3.75 ——

2.50 2.50 2.50 —

3.04 2.23 2.23 —

3.40 2.05 2.05 —

2.75 2.75 2.00 —

3.10 2.55 1.85 —

2.50 2.50 2.50 —

2.88 2.88 1.74 —

2.84 2.33 2.33 —

2.66 2.66 2.18 —

2.50 2.50 2.50 —

3.94 1.78 1.78 —

3.63 2.24 1.63 —

3.36 2.07 2.07 —

3.41 2.56 1.53 —

3.17 2.38 1.95 —

1.88 1.88 1.88 1.88

2.34 1.72 1.72 1.72

2.67 1.61 1.61 1.61

2.17 2.17 1.58 1.58

2.48 2.04 1.49 1.49

2.01 2.01 2.01 1.47

2.31 1.90 1.90 1.39

1.88 1.88 1.88 1.88

2.34 2.34 1.41 1.41

3.18 1.44 1.44 1.44

Cooling

capacity

(kW)

2.7

(1.4 to 3.2)

3.7

(1.4 to 4.4)

4.5

(1.4 to 5.0)

6.0

(2.4 to 6.8)

5.4

(2.5 to 6.3)

5.9

(2.7 to 6.6)

6.3

(2.9 to 6.9)

6.3

(2.9 to 6.9)

6.8

(3.0 to 7.2)

7.2

(3.2 to 7.5)

7.2

(3.3 to 8.0)

7.5

(3.4 to 8.3)

7.5

(3.4 to 8.5)

7.5

(3.4 to 9.0)

7.5

(3.5 to 8.2)

7.5

(3.5 to 8.4)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.9)

7.5

(3.5 to 8.9)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.3)

7.5

(3.5 to 9.0)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.2)

7.5

(3.7 to 9.5)

7.5

(3.7 to 9.6)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.9)

7.5

(3.7 to 9.9)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

Power

consumption

(W)

750

(640 to 950)

1200

(640 to 1520)

1650

(640 to 2000)

2020

(660 to 2500)

1560

(640 to 2040)

1850

(660 to 2220)

2040

(670 to 2400)

2120

(670 to 2400)

2290

(670 to 2570)

2550

(670 to 2750)

2250

(670 to 2690)

2550

(700 to 2850)

2500

(700 to 2880)

2430

(700 to 2950)

2400

(750 to 2720)

2400

(750 to 2780)

2400

(750 to 2840)

2400

(750 to 2840)

2400

(750 to 2900)

2400

(750 to 2900)

2400

(750 to 2930)

2400

(750 to 2930)

2400

(750 to 2990)

2400

(750 to 3050)

2400

(750 to 2950)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2970)

2200

(800 to 3170)

2200

(800 to 3200)

2200

(800 to 3270)

2200

(800 to 3270)

2200

(800 to 3300)

2200

(800 to 3300)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3300)

Operating

current

(A)

4.49

(3.88 to 5.61)

6.06

(3.88 to 7.51)

8.15

(3.88 to 9.67)

9.87

(4.00 to 11.97)

7.71

(3.88 to 9.97)

9.04

(4.00 to 10.63)

9.86

(4.06 to 11.50)

10.25

(4.06 to 11.50)

10.97

(4.06 to 12.31)

12.21

(4.06 to 13.17)

10.78

(4.06 to 12.88)

12.21

(4.24 to 13.65)

11.97

(4.24 to 13.79)

11.64

(4.24 to 14.13)

11.50

(4.43 to 13.03)

11.50

(4.43 to 13.32)

11.50

(4.43 to 13.60)

11.50

(4.43 to 13.60)

11.50

(4.43 to 13.89)

11.50

(4.43 to 13.89)

11.50

(4.43 to 14.03)

11.50

(4.43 to 14.03)

11.50

(4.43 to 14.32)

11.50

(4.43 to 14.61)

11.50

(4.43 to 14.13)

11.50

(4.43 to 14.18)

11.50

(4.43 to 14.18)

11.50

(4.43 to 14.18)

11.50

(4.43 to 14.23)

10.54

(4.72 to 15.18)

10.54

(4.72 to 15.33)

10.54

(4.72 to 15.66)

10.54

(4.72 to 15.66)

10.54

(4.72 to 15.81)

10.54

(4.72 to 15.81)

10.54

(4.72 to 15.95)

10.54

(4.72 to 15.95)

10.54

(4.72 to 15.95)

10.54

(4.72 to 15.81)

Outdoor

noise

(dB)

48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

– 8 –

Current

limited

Full

operation

Power

supply

(V)

230

Operating

status

1 unit

2 units

3 units

4 units

Indoor unit

ABCD

10 ——— 13 ——— 16 ——— 22 ——— 10 10 —— 13 10 —— 16 10 —— 13 13 —— 16 13 —— 16 16 —— 22 10 —— 22 13 —— 22 16 —— 22 22 —— 10 10 10 — 13 10 10 — 16 10 10 — 13 13 10 — 16 13 10 — 13 13 13 — 16 16 10 — 16 13 13 — 16 16 13 — 16 16 16 — 22 10 10 — 22 13 10 — 22 13 13 — 22 16 10 — 22 16 13 — 10 10 10 10 13 10 10 10 16 10 10 10 13 13 10 10 16 13 10 10 13 13 13 10 16 13 13 10 13 13 13 13 16 16 10 10 22 10 10 10

Operating

ABCD

2.70 ———

3.70 ———

4.50 ———

6.00 ———

2.70 2.70 ——

3.41 2.49 ——

3.94 2.36 ——

3.15 3.15 ——

3.73 3.07 ——

3.60 3.60 ——

4.97 2.23 ——

4.64 2.86 ——

4.29 3.21 ——

3.75 3.75 ——

2.50 2.50 2.50 —

3.04 2.23 2.23 —

3.40 2.05 2.05 —

2.75 2.75 2.00 —

3.10 2.55 1.85 —

2.50 2.50 2.50 —

2.88 2.88 1.74 —

2.84 2.33 2.33 —

2.66 2.66 2.18 —

2.50 2.50 2.50 —

3.94 1.78 1.78 —

3.63 2.24 1.63 —

3.36 2.07 2.07 —

3.41 2.56 1.53 —

3.17 2.38 1.95 —

1.88 1.88 1.88 1.88

2.34 1.72 1.72 1.72

2.67 1.61 1.61 1.61

2.17 2.17 1.58 1.58

2.48 2.04 1.49 1.49

2.01 2.01 2.01 1.47

2.31 1.90 1.90 1.39

1.88 1.88 1.88 1.88

2.34 2.34 1.41 1.41

3.18 1.44 1.44 1.44

Cooling

capacity

(kW)

2.7

(1.4 to 3.2)

3.7

(1.4 to 4.4)

4.5

(1.4 to 5.0)

6.0

(2.4 to 6.8)

5.4

(2.5 to 6.3)

5.9

(2.7 to 6.6)

6.3

(2.9 to 6.9)

6.3

(2.9 to 6.9)

6.8

(3.0 to 7.2)

7.2

(3.2 to 7.5)

7.2

(3.3 to 8.0)

7.5

(3.4 to 8.3)

7.5

(3.4 to 8.5)

7.5

(3.4 to 9.0)

7.5

(3.5 to 8.2)

7.5

(3.5 to 8.4)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.9)

7.5

(3.5 to 8.9)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.3)

7.5

(3.5 to 9.0)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.2)

7.5

(3.7 to 9.5)

7.5

(3.7 to 9.6)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.9)

7.5

(3.7 to 9.9)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

Power

consumption

(W)

750

(640 to 950)

1200

(640 to 1520)

1650

(640 to 2000)

2020

(660 to 2500)

1560

(640 to 2040)

1850

(660 to 2220)

2040

(670 to 2400)

2120

(670 to 2400)

2290

(670 to 2570)

2550

(670 to 2750)

2250

(670 to 2690)

2550

(700 to 2850)

2500

(700 to 2880)

2430

(700 to 2950)

2400

(750 to 2720)

2400

(750 to 2780)

2400

(750 to 2840)

2400

(750 to 2840)

2400

(750 to 2900)

2400

(750 to 2900)

2400

(750 to 2930)

2400

(750 to 2930)

2400

(750 to 2990)

2400

(750 to 3050)

2400

(750 to 2950)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2970)

2200

(800 to 3170)

2200

(800 to 3200)

2200

(800 to 3270)

2200

(800 to 3270)

2200

(800 to 3300)

2200

(800 to 3300)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3300)

Operating

current

(A)

4.29

(3.71 to 5.36)

5.80

(3.71 to 7.18)

7.80

(3.71 to 9.25)

9.44

(3.83 to 11.45)

7.37

(3.71 to 9.54)

8.65

(3.83 to 10.17)

9.44

(3.88 to 11.00)

9.81

(3.88 to 11.00)

10.49

(3.88 to 11.77)

11.68

(3.88 to 12.60)

10.31

(3.88 to 12.32)

11.68

(4.06 to 13.06)

11.45

(4.06 to 13.19)

11.13

(4.06 to 13.52)

11.00

(4.23 to 12.46)

11.00

(4.23 to 12.74)

11.00

(4.23 to 13.01)

11.00

(4.23 to 13.01)

11.00

(4.23 to 13.29)

11.00

(4.23 to 13.29)

11.00

(4.23 to 13.42)

11.00

(4.23 to 13.42)

11.00

(4.23 to 13.70)

11.00

(4.23 to 13.97)

11.00

(4.23 to 13.52)

11.00

(4.23 to 13.56)

11.00

(4.23 to 13.56)

11.00

(4.23 to 13.56)

11.00

(4.23 to 13.61)

10.08

(4.52 to 14.52)

10.08

(4.52 to 14.66)

10.08

(4.52 to 14.98)

10.08

(4.52 to 14.98)

10.08

(4.52 to 15.12)

10.08

(4.52 to 15.12)

10.08

(4.52 to 15.26)

10.08

(4.52 to 15.26)

10.08

(4.52 to 15.26)

10.08

(4.52 to 15.12)

Outdoor

noise

(dB)

48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

– 9 –

Current

limited

Full

operation

Power

supply

(V)

240

Operating

status

1 unit

2 units

3 units

4 units

Indoor unit

ABCD

10 ——— 13 ——— 16 ——— 22 ——— 10 10 —— 13 10 —— 16 10 —— 13 13 —— 16 13 —— 16 16 —— 22 10 —— 22 13 —— 22 16 —— 22 22 —— 10 10 10 — 13 10 10 — 16 10 10 — 13 13 10 — 16 13 10 — 13 13 13 — 16 16 10 — 16 13 13 — 16 16 13 — 16 16 16 — 22 10 10 — 22 13 10 — 22 13 13 — 22 16 10 — 22 16 13 — 10 10 10 10 13 10 10 10 16 10 10 10 13 13 10 10 16 13 10 10 13 13 13 10 16 13 13 10 13 13 13 13 16 16 10 10 22 10 10 10

Operating

ABCD

2.70 ———

3.70 ———

4.50 ———

6.00 ———

2.70 2.70 ——

3.41 2.49 ——

3.94 2.36 ——

3.15 3.15 ——

3.73 3.07 ——

3.60 3.60 ——

4.97 2.23 ——

4.64 2.86 ——

4.29 3.21 ——

3.75 3.75 ——

2.50 2.50 2.50 —

3.04 2.23 2.23 —

3.40 2.05 2.05 —

2.75 2.75 2.00 —

3.10 2.55 1.85 —

2.50 2.50 2.50 —

2.88 2.88 1.74 —

2.84 2.33 2.33 —

2.66 2.66 2.18 —

2.50 2.50 2.50 —

3.94 1.78 1.78 —

3.63 2.24 1.63 —

3.36 2.07 2.07 —

3.41 2.56 1.53 —

3.17 2.38 1.95 —

1.88 1.88 1.88 1.88

2.34 1.72 1.72 1.72

2.67 1.61 1.61 1.61

2.17 2.17 1.58 1.58

2.48 2.04 1.49 1.49

2.01 2.01 2.01 1.47

2.31 1.90 1.90 1.39

1.88 1.88 1.88 1.88

2.34 2.34 1.41 1.41

3.18 1.44 1.44 1.44

Cooling

capacity

(kW)

2.7

(1.4 to 3.2)

3.7

(1.4 to 4.4)

4.5

(1.4 to 5.0)

6.0

(2.4 to 6.8)

5.4

(2.5 to 6.3)

5.9

(2.7 to 6.6)

6.3

(2.9 to 6.9)

6.3

(2.9 to 6.9)

6.8

(3.0 to 7.2)

7.2

(3.2 to 7.5)

7.2

(3.3 to 8.0)

7.5

(3.4 to 8.3)

7.5

(3.4 to 8.5)

7.5

(3.4 to 9.0)

7.5

(3.5 to 8.2)

7.5

(3.5 to 8.4)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.6)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.8)

7.5

(3.5 to 8.9)

7.5

(3.5 to 8.9)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.3)

7.5

(3.5 to 9.0)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.1)

7.5

(3.5 to 9.2)

7.5

(3.7 to 9.5)

7.5

(3.7 to 9.6)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.8)

7.5

(3.7 to 9.9)

7.5

(3.7 to 9.9)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

7.5

(3.7 to 10.0)

Power

consumption

(W)

750

(640 to 950)

1200

(640 to 1520)

1650

(640 to 2000)

2020

(660 to 2500)

1560

(640 to 2040)

1850

(660 to 2220)

2040

(670 to 2400)

2120

(670 to 2400)

2290

(670 to 2570)

2550

(670 to 2750)

2250

(670 to 2690)

2550

(700 to 2850)

2500

(700 to 2880)

2430

(700 to 2950)

2400

(750 to 2720)

2400

(750 to 2780)

2400

(750 to 2840)

2400

(750 to 2840)

2400

(750 to 2900)

2400

(750 to 2900)

2400

(750 to 2930)

2400

(750 to 2930)

2400

(750 to 2990)

2400

(750 to 3050)

2400

(750 to 2950)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2960)

2400

(750 to 2970)

2200

(800 to 3170)

2200

(800 to 3200)

2200

(800 to 3270)

2200

(800 to 3270)

2200

(800 to 3300)

2200

(800 to 3300)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3330)

2200

(800 to 3300)

Operating

current

(A)

4.11

(3.56 to 5.14)

5.56

(3.56 to 6.88)

7.47

(3.56 to 8.87)

9.05

(3.67 to 10.98)

7.07

(3.56 to 9.14)

8.29

(3.67 to 9.75)

9.04

(3.72 to 10.54)

9.40

(3.72 to 10.54)

10.05

(3.72 to 11.28)

11.20

(3.72 to 12.07)

9.88

(3.72 to 11.81)

11.20

(3.89 to 12.51)

10.98

(3.89 to 12.64)

10.67

(3.89 to 12.95)

10.54

(4.06 to 11.94)

10.54

(4.06 to 12.21)

10.54

(4.06 to 12.47)

10.54

(4.06 to 12.47)

10.54

(4.06 to 12.73)

10.54

(4.06 to 12.73)

10.54

(4.06 to 12.86)

10.54

(4.06 to 12.86)

10.54

(4.06 to 13.13)

10.54

(4.06 to 13.39)

10.54

(4.06 to 12.95)

10.54

(4.06 to 13.00)

10.54

(4.06 to 13.00)

10.54

(4.06 to 13.00)

10.54

(4.06 to 13.04)

9.66

(4.33 to 13.92)

9.66

(4.33 to 14.05)

9.66

(4.33 to 14.36)

9.66

(4.33 to 14.36)

9.66

(4.33 to 14.49)

9.66

(4.33 to 14.49)

9.66

(4.33 to 14.62)

9.66

(4.33 to 14.62)

9.66

(4.33 to 14.62)

9.66

(4.33 to 14.49)

Outdoor

noise

(dB)

48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

– 10 –

Current

limited

11A

Power

supply

(V)

230

Operating

status

1 unit

2 units

3 units

4 units

Indoor unit

ABCD

10 ——— 13 ——— 16 ——— 22 ——— 10 10 —— 13 10 —— 16 10 —— 13 13 —— 16 13 —— 16 16 —— 22 10 —— 22 13 —— 22 16 —— 22 22 —— 10 10 10 — 13 10 10 — 16 10 10 — 13 13 10 — 16 13 10 — 13 13 13 — 16 16 10 — 16 13 13 — 16 16 13 — 16 16 16 — 22 10 10 — 22 13 10 — 22 13 13 — 22 16 10 — 22 16 13 — 10 10 10 10 13 10 10 10 16 10 10 10 13 13 10 10 16 13 10 10 13 13 13 10 16 13 13 10 13 13 13 13 16 16 10 10 22 10 10 10

Operating

ABCD

2.70 ———

3.70 ———

4.50 ———

6.00 ———

2.70 2.70 ——

3.41 2.49 ——

3.94 2.36 ——

3.15 3.15 ——

3.73 3.07 ——

3.55 3.55 ——

4.97 2.23 ——

4.52 2.78 ——

4.17 3.13 ——

3.70 3.70 ——

2.50 2.50 2.50 —

3.04 2.23 2.23 —

3.40 2.05 2.05 —

2.75 2.75 2.00 —

3.10 2.55 1.85 —

2.50 2.50 2.50 —

2.88 2.88 1.74 —

2.84 2.33 2.33 —

2.66 2.66 2.18 —

2.50 2.50 2.50 —

3.94 1.78 1.78 —

3.63 2.24 1.63 —

3.36 2.07 2.07 —

3.41 2.56 1.53 —

3.17 2.38 1.95 —

1.88 1.88 1.88 1.88

2.34 1.72 1.72 1.72

2.67 1.61 1.61 1.61

2.17 2.17 1.58 1.58

2.48 2.04 1.49 1.49

2.01 2.01 2.01 1.47

2.31 1.90 1.90 1.39

1.88 1.88 1.88 1.88

2.34 2.34 1.41 1.41

3.18 1.44 1.44 1.44

Cooling

capacity

(kW)

2.7

(1.4 to 3.2)

3.7

(1.4 to 4.4)

4.5

(1.4 to 5.0)

6.0

(2.4 to 6.5)

5.4

(2.5 to 6.3)

5.9

(2.7 to 6.6)

6.3

(2.9 to 6.9)

6.3

(2.9 to 6.9)

6.8

(3.0 to 7.1)

7.1

(3.2 to 7.1)

7.2

(3.3 to 7.3)

7.3

(3.4 to 7.3)

7.3

(3.4 to 7.3)

7.4

(3.4 to 7.4)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.5 to 7.5)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

7.5

(3.7 to 7.7)

Power

consumption

(W)

750

(640 to 950)

1200

(640 to 1520)

1650

(640 to 2000)

2020

(660 to 2400)

1560

(640 to 2040)

1850

(660 to 2220)

2040

(670 to 2400)

2120

(670 to 2400)

2290

(670 to 2400)

2400

(670 to 2400)

2250

(670 to 2400)

2400

(700 to 2400)

2400

(700 to 2400)

2400

(700 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2400

(750 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

2200

(800 to 2400)

Operating

current

(A)

4.29

(3.71 to 5.36)

5.80

(3.71 to 7.18)

7.80

(3.71 to 9.25)

9.44

(3.83 to 11.00)

7.37

(3.71 to 9.54)

8.65

(3.88 to 10.17)

9.44

(3.88 to 11.00)

9.81

(3.88 to 11.00)

10.49

(3.88 to 11.00)

11.00

(3.88 to 11.00)

10.31

(3.88 to 11.00)

11.00

(4.06 to 11.00)

11.00

(4.06 to 11.00)

11.00

(4.06 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

11.00

(4.23 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

10.08

(4.52 to 11.00)

Outdoor

noise

(dB)

48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48

– 11 –

2-2-1. Operation Characteristic Curve

18

16

14

12

10

• Conditions Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Air flow : High Pipe length : 5m × 4 4 units operating

8

220V

Current (A)Capacity ratio (%)

6

230V

4

2

0

10 20 30 40 50 60 70 80 90

Inverter output frequency (rps)

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

240V

110

100

90

80

70

60

50

• Conditions Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Indoor air flow : High Pipe length : 5m × 4 4 units operating

33 34 35 36 37 38 39 4032

Current limited start

41 42 43 44 45 46

Outdoor temp. (˚C)

Capacity ratio 100% = 7.5kW

– 12 –

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.

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 problem. By using tools and materials exclusive for R410A, it is necessary to carry out installation/servicing safely while taking the following precautions into consideration.

1. Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A.

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

2. Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant R410A.

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

3. If a refrigeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

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

5. After completion of installation work, check to make sure that there is no refrigeration gas leakage.

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

6. When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentr ation does not exceed the marginal le vel.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, an oxygen-deficient accident may result.

7. Be sure to carry out installation or removal according to the installation manual.

Improper installation may cause refrigeration problem, 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.

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 capillar y 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.

– 13 –

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

– 14 –

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 pr ocessing 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

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

– 15 –

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

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.

Table 3-2-7 Tightening torque of flare for R410A [Reference values]

Nominal

diameter

1/4

Outer diameter

(mm)

6.35

Tightening torque

N•m (kgf•cm)

14 to 18 (140 to 180)

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

16 (160), 18 (180) 3/8 1/2 5/8

9.52

12.70

15.88

33 to 42 (330 to 420) 50 to 62 (500 to 620) 63 to 77 (630 to 770)

– 16 –

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

3-3. Tools

3-3-1. Required T ools

The service port diameter of packed v alve 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 f or 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

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

Usage

Pipe flaring Flaring by

conventional flare tool

Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating Refrigerant charge Refrigerant charge

Gas leakage check Refrigerant charge

Existence of 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)

× ×

¡

×

¡

×

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

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

General tools (Conventional tools can be used.)

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

1. Vacuum pump Use vacuum pump by attaching vacuum pump adapter.

2. Torque wrench (For Ø6.35, Ø9.52)

3. Pipe cutter

4. Reamer

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

– 17 –

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 e xceeding 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.

(Indoor 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

– 18 –

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 br azing 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.

– 19 –

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

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

• It is easy to remove slag after brazing.

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

• It excels in coating perf ormance 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 prev ent 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

Nitrogen gas

Rubber plug

Fig. 3-5-1 Pre vention of oxidation during brazing

– 20 –

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

RAS-M10SKCV, RAS-M13SKCV, RAS-M16SKCV

790

Front panel

63

7

48

Knock out system

275

Air filter

116

Air inlet

Heat exchanger

480

Installation plate hanger

62 69

193

205

48

Knock out system

49

56

19

Wireless remote controller

63

7

157

Installation plate hanger

Connecting pipe (0.35m) (For 10,13 series; Flare Ø9.52mm) (For 16 series; Flare Ø12.7mm)

84.5 235

215

Hanger

Minimum

distance

to wall

170 or more

275

40

84.5 150 84.5 Center line

Drain hose (0.50m)

Connecting pipe (0.40m) (Flare Ø6.35mm)

621

235

215

Minimum

distance to ceiling

65

or more

Hanger Hanger

160.5 160.5 150 Installation plate outline

– 21 –

84.5

Minimum

distance

to wall

170 or more

125

63

26

Remote controller holder

45

190

40

RAS-M22SKCV

1050

Front panel

73.5 7

50

Knock out system Knock out system

Air filter

320

Heat exchanger

Installation plate hanger

132 568 200 150

Air inlet

228

50

72 78

56 24

Wireless remote controller

73.5

7

204

Installation plate hanger

Connecting plate (0.39m) (Flare Ø12.70mm)

132 786

85

320

40

47 215.5 262.5 262.5 153.5 109

Drain hose (0.5mm)

235 215 215

Hanger

Center line Instrallation plate outline

235

Hanger

Connecting pipe (0.49m) (Flare Ø6.35mm)

132

23

163

82 26

Remote controller holder

40

– 22 –

RAS-M22NKCV1

75

7

51

Knock out system

Back body Front panel

Grille inlet

298

Air inlet

Air outlet

998

75

56

220

Knock out system

50

75

8

Connection pipe (0.39 m) (Flare Ø12.7)

Outline of indoor unit

55 or more

Minimum distance

to ceiling

298

Ø65

100

20

160

Drain hose (0.54 m)

Connection pipe (0.49 m) (Flare Ø6.35)

57

Wireless remote controller

18

998

48

763.5 450

20

10

(For stud bolt Ø6) (For stud bolt Ø8 - Ø10)

29

41

48

55 5555

Installation plate outline

100

Ø65

40

– 23 –

4-2. Outdoor Unit

RAS-4M26SACV

2-dia.12 × 17 U-shape hole (for dia.8-10 anchor bolt)

17.517.5

365

320

28

150 150

50

Anchor bolt

long hole pitch

A

600

log part

900

Fan guard

136

dia.510

Mounting dimensions of anchor bolt

2-dia.12 × 17 U-shape hole (for dia.8-10 anchor bolt)

D

600

Intake

100 or more

Intake

100 or more

365

B

log part

50

2-dia.12 × 17 long hole (for dia.8-10 anchor bolt)

C

600 or more

B

Outlet

Outside line of product

2-dia.12 × 17 long hole (for dia.8-10 anchor bolt)

When installing the outdoor unit, leave open in at least two of directions (A), (B), (C) and (D) shown in the figure below.

600 or more

A

(Minimum distance from wall)

164

91

Fan guardOutdoor air temperature sensor

Hanger

Liquid valve

– 24 –

38

795

514

410

25

90 53 53 53 53 53 5353

400

Gas valve Service port

Connecting pipe port :

D unit

C unit

B unit

A unit

98

Hanger

Connecting pipe dia.6.35 Connecting pipe dia.9.52 Connecting pipe dia.6.35 Connecting pipe dia.9.52 Connecting pipe dia.6.35 Connecting pipe dia.9.52 Connecting pipe dia.6.35 Connecting pipe dia.12.7

Screw

Knock out

2-dia.3.5 hole

Knock out

262 431

Drain long hole dia.20 × 88 long hole

Drain hole dia.25

5-dia.3.5 hole

Knock out

Tightly seal the knock-out holes and screw/thread areas using a silicon adhesive, etc. to ensure that there is no water drippage.

Under some conditions, comdensation may form on the base plate and arain, use the drain pan.

Detailed A log part Detailed B log part

365

R20

600

Outside line of product

R6

17

12

50

units : mm

365

50 12

20

R6

600

R14

Outside line of product

5-1. Indoor Unit

RAS-M10SKCV, RAS-M13SKCV

5. WIRING DIAGRAM

Outdoor terminal block

Indoor terminal block

Power supply (From Outdoor unit) 1 , 220 240V ~, 50Hz 1 , 220V

Heat exchanger sensor

(TCJ)

1 2

Heat exchanger sensor

(TC)

121

Thermo sensor

(TA)

BLU

1

2

3

4

5

6

7

8

9

MCC-5044

10

11

11 12 13 14 15

CN10

(WHI)

12

13

14

15

Wireless unit assembly

BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

CN21 (WHI)

~

, 60Hz

Sheet metal

CN02

Fuse F01

T3.15A

11

CN63 (YEL)

22

1

CN62 (BLU)

2

CN61 (WHI)

2

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

1 2 3

BLK

WHI

BLK

3

1

CN51

CN01

3

Varistor

DC5V

DC12V

Main P.C. board

MCC-5046

RED

Line filter

Heat exchanger

GRN & YEL

1

3

5

CN31

(WHI)

1

2

3

CN33 (WHI)

1

2

3

4

5

CN32 (WHI)

CN22 (WHI)

1 2 3 4

Power supply circuit

WHI

YEL YEL YEL YEL

6

5

4

AC motor

3

2

1

Fan motor

1

2

3

4

5

Louver motor

Color

Identification

YEL : BLK : BLACK WHI : WHITE RED : RED BLU : BLUE GRN & YEL :

GRAY &

YELLOW

– 25 –

RAS-M16SKCV, RAS-M22SKCV

Outdoor terminal block

Indoor terminal block

Power supply (From Outdoor unit) 1Ø, 220 – 240V 1Ø, 220V ~, 60Hz

Heat exchanger sensor

(TCJ)

1 2

Heat exchanger sensor

(TC)

121

Thermo sensor

(TA)

BLU

1

2

3

4

5

6

7

8

MCC-5044

9

10

11

Wireless unit assembly

11

CN10

(WHI)

BLU BLU BLU BLU BLU BLU BLU BLU BLU WHI

1 2 3 4 5 6 7 8

9 10 11

CN21 (WHI)

Sheet metal

CN02

Fuse F01

T3.15A

AC250V

11

CN63 (YEL)

22

1

CN62

(BLU)

2

CN61

(WHI)

2

1 2 3 4 5 6 7 8

9 10 11

1 2 3

BLK

WHI

~

, 50Hz

BLK

3

1

CN51

CN01

Varistor

Line filter

Main P.C. board

MCC-5045

RED

DC5V

DC12V

~

–

~

Heat exchanger

GRN & YEL

1

3 4 4 5

3 5

DC motor

6 6

CN31

(WHI)

1

2

3

4

5

CN32

(WHI)

CN22

(WHI)

WHI YEL YEL YEL YEL

1

2

3

4

5

Fan motor

Louver motor

1 2 3 4

Color

+

Power supply circuit

Identification

YEL : BLK : BLACK WHI : WHITE RED : RED BLU : BLUE GRN & YEL :

GRAY &

YELLOW

– 26 –

RAS-M22NKCV1

Louver motor

YEL

WHI

PNK

RED

ORN

6 5 4 3 2 1 6

5 4 3 2 1

BRW

5

CN07

Infrared rays receive

and indication parts

MCC-819

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

BLU

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

4

BLU

10 10

WHI

CN25

CN14

HA

JEM-A

1 2 3 4

CN08

Outdoor unit

2

BLK

1

WHI

2

RED

3

Indoor

terminal block

GRN & YEL

Indoor unit

CN24 CN23 CN21

T3.15A, 250V

Color

Identification

BRW: BROWN RED : RED WHI : WHITE YEL :

YELLOW BLU : BLUE BLK : BLACK GRY : GRAY ORN : ORANGE GRN : GREEN PNK : PINK GRN & YEL :

GRAY &

YELLOW

3

F01

1 2 3 1 2 3

CN11

BRW GRY

YEL

Fan motor

drive circuit

5 3 1 5 3 1

BLK

11223344556

145˚C

Power supply

6

CN10

WHI

RED

6

circuit

Main P.C. board

Thermo.

sensor

AC Fan motor

(WP-004)

1 2

CN03 (WHI)

1 2

BLK

(TA)

+12V DC +5V DC

Heat exchanger

sensor

1 2 1 2

BLK

(TC)

BLK

CN01 (BLU)

Simple check points for diagnosing faults

Check item Diagnosis result

1

Operation indicator

2

Terminal block

3

Fuse, 3.15A

4

DC5V

5

DC12V

6

AC220 – 240V

Check to see if the OPERATION indicator goes on and off when the main switch or breaker is turned on.

Check the power supply voltage between (Refer to the name plate) Check the voltage between



Check to see if the fuse blows out.

Check the voltage at the No. 8 pin on CN14 connector of the infrared receiver.

Check the voltage at the brown lead of the louver motor. (Check the power supply circuit of the rated voltage.)

Check the voltage at the No. 1 pin of CN10 connector and CN24. (Check the F01)

For detailed diagnostic procedure, refer to the service data.

and .



and . (AC15 – 60V)

– 27 –

5-2. Outdoor Unit

RAS-4M26SACV

Thermostat for compressor

ORN

212

ORN

1

Fan motor

FM

PMV

D

PMV

C

PMV

B

PMV

A

SUB P.C. Board

(MCC-818)

F500, Fuse T6.3A, 250V~

WHI

RED ORN PNK YEL

Color Identification

BLK : BLACK PNK : PINK ORN: ORANGE

P501 P500

5

4

3

CN301

2

1

3

CN300

2

1

6

5

4

CN704

BLU

3

2

1

CN802

CN608

CN607

CN606

121

Compressor

121 3

1 1 3

1 1

6

5

4

CN703

RED

3

2

1

6

5

CN702

WHI

4

3

2

1

6

5

4

3

CN701

2

YEL

1

Fan

circuit

F300, Fuse T3.15A, 250V~

CN605

CN604

CN602

CN601

CN302

CN800

Photo coupler

CN303

3 1 1

2 2 1 1

3 1 1

2 2 1 1

3 1

5 4 3 2 1

212

3

CN501

1

BLU : BLUE GRN : GREEN YEL : YELLOW RED : RED WHI : WHITE PUR : PURPLE GRY: GRAY BRW : BROWN

RED

2

CM

2

3

121

BLU

GRN

2

RED

WHI

BLK

TGd

TGc

P.C. Board

(MCC-1438)

CN20 CN21 CN22

Power supply circuit

(For P.C. Board)

F04 Fuse T3.15A 250V~

T03 CT T04 CT

3

BRW

3

YEL

121

TGb

C13

TGa

2

BLU

C12 C11 C10

3

TD

TO

3 1

5 4 3 2 1

1

BLU YEL

BLK WHI

BLU RED PNK

PUR ORN

3 1

5 4 3 2 1

212

3 1

5 4 3 2 1

1

Power

relay

RY02

RB05

CN04

CN06

CN05

F02 Fuse 25A 250V~

T02 CT

5 5

Varistor

F01, Fuse T25A, 250V~

3 1

Fuse, T6.3A, 250V~

WHI

RED

3 1 1

3

CN13

CN01P07 P03 P04 P05 P06 CN02 CN03

P20 P19

P18 P17

P13 P12

P09 P08

+

BU EU BV EV BW EW BX BY BZ

–

Q200

YEL

BLU

IGBT

G C

(PFC)

E

Q404

Diode

+

block

~ ~

(PFC)

–

DB02

P29

+

P21

Diode

~

P24

~

P28

–

GRY

Reactor

212

1

Surge

absorber

BLKBLKBLK WHI

IGBT module

block

1 2 3 1 2 3 1 2 3 1 2 3

To

Indoor

unit A

To

Indoor

unit B

To

Indoor

unit C

To

Indoor

unit D

– 28 –

WHI

Terminal block

220–240V ~50Hz

220–220V ~60Hz

L N

Power supply

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

RAS-M10SKCV, RAS-M13SKCV, RAS-M16SKCV, RAS-M22SKCV

No.

Fan motor

1

(for indoor)

2

Room temp. sensor (TA-sensor)

3

Heat exchanger temp. sensor (TC-sensor)

4

Louver motor

RAS-M22NKCV1

No.

1

Fan motor (for indoor)

2

Thermo. sensor (TA-sensor)

3

DC-DC transformer (T01)

4

Microcomputer

5

Heat exchanger temp. sensor (TC-sensor)

6

Line filter (L01)

7

Diode (DB01)

8

Capacitor (C50)

9

Fuse (F01)

10

Regulator IC (IC08)

11

Regulator IC (IC11)

12

Resistor (R21, R109)

13

Louver motor

6-2. Outdoor Unit

Parts name

RAS-M10SKCV, M13SKCV RAS-M16SKCV, M22SKCV

Parts name

Type

AFS-220-20-4AR

ICF-340-30-2B

( – ) ( – )

MP24Z3T

Type

AFS-220-31-4A

( – )

TT-10

µPD780024AGK

( – )

SS11V-06270

KBP06M LXV35VB2200MJ20 BET 3.15A, AC250V

NJM7812 NJM7805 15G561K

MP35EA12

Specifications

AC240V, 20W DC340V, 30W 10kΩ at 25°C 10kΩ at 25°C Output (Rated) 1W, 16 poles, DC12V

Specifications

AC220–240V 10kΩ at 25°C 198-264V, 6VA

10kΩ at 25°C 27µH, AC 0.64A

1.5A, 420V 2200µF, 35V T3.15A, 250V DC12V, 1.5A max. DC5V, 1.5A max 560V DC12V

RAS-4M26SACV

No.

SC coil (Noise filter) (L01)

1

SC coil (Noise filter) (L02) SC coil (Noise filter) (L03)

2

DC-DC transformer

3

Outside fan motor

5

Relay (Power relay)

6

Discharge temp. sensor (TD-sensor)

7

Outside air temp. sensor (TO-sensor)

8

Temp. sensor at A room gas side (TGA-sensor)

9

Temp. sensor at B room gas side (TGB-sensor)

10

Temp. sensor at C room gas side (TGC-sensor)

11

Temp. Sensor at D room gas side (TGD-sensor)

12

Ter minal block (6P)

13

Ter minal block (3P)

14

Fuse

15

Electrolytic capacitor

16

Transistor module

17

Compressor

18

Compressor thermo.

19

Diode block (Rectifire)

20

Reactor (Main)

Parts name

Model name

ADR2520R15TB

SC-20-S03J

ADR25H200RBTB

SWT-75

ICF-140-63-2R

G4A-1A-PE

(Inverter attached) (Inverter attached) (Inverter attached) (Inverter attached) (Inverter attached) (Inverter attached)

—

— For protection of switching power source (F04) For protection of power f actor converter circuit breakage For protection of inverter input overcurrent For protection of switching power source (F300) For protection of power source

LLQ2G761KHUATF

6MBI40SS-060-51A

DA220A2F-20L

US622KXTMQO

S30VT80

CH-47-Z-T

Rating

AC 250V, 20A, 0.15mH AC 250V, 20A, 0.3mH AC 250V, 20A, 0.88mH Primary side DC 240 – 390V

Secondary side : 7V × 1, 13V × 1

DC 140V, 63W Coil : DC 12V

Contact : 20A, AC250V 64kΩ (20°C) 10kΩ (25°C) 10kΩ (25°C) 10kΩ (25°C) 10kΩ (25°C) 10kΩ (25°C) AC 250V, 20A AC 250V, 20A AC 250V, 3.15A AC 250V, 25A AC 250V, 25A AC 250V, 3.15A AC 250V, 6.3A DC 400V, 760µF 600V, 40A 3 phases, 4 poles, 2000W OFF : 125 ± 4°C, ON : 90 ± 5°C AC 800V, 30A L = 8mH, 16A

16V × 3

– 29 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Indoor Unit and Ourdoor Unit

RAS-M10SKCV, RAS-M13SKCV, RAS-M16SKCV, RAS-M22SKCV, RAS-M22NKCV1 / RAS-4M26SACV

Connecting pipe Thickness : 0.8mm Ø12.7 : RAS-M22NKCV1, RAS-M16SKCV RAS-M22SKCV

Ø9.52 : RAS-M10SKCV, RAS-M13SKCV

Temp. measurement

To

D room

To

C roomToB room

TGd TGc TGb

T1

Indoor unit A

Evaporator

Cross flow fan

Connecting pipe Thickness : 0.8mm Ø6.35

Sectional shape of heat insulator

TGa

TA

Strainer

TCa To

D room

(Ø6.35)(Ø9.52) (Ø9.52) (Ø9.52) (Ø12.7) (Ø6.35) (Ø6.35) (Ø6.35)

To

C room

To

B room

Per 1 unit Max. : 25m Min. : 2m

Total Max. : 70m ∗1 or

Allowable height

difference : 15m

50m ∗2

Allowable pipe length

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

Pressure

P

measurement Gauge attaching port Vacuum pump connecting port

Accumulating tank 1500cc

Temp. measurement

Packed valve (Gas side) (Ø12.7)

T2

Propeller fan

Outdoor unit

Packed valve (Liquid side) (Ø9.52)

Muffler Ø25 x 160L

TD

Compressor DA220A2F-20L

TO

Refrigerant amount : 2.2kg (R410A)

NOTE : Gas leak check position Refrigerant flow

NOTE :

∗1 In case of without the RAS-M22SKCV indoor unit. ∗2 In case of with the RAS-M22SKCV indoor unit. ∗∗ The additional charging of refrigerant is unnecessar y because this conditioner is designed with charge-less

specification.

– 30 –