Mitsubishi SUZ-KA60VA, SUZ-KA25VAH, SUZ-KA25VA Service Manual

TECHNICAL & SERVICE MANUAL

No.OC322

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R410A

SUZ-KA25VA.TH SUZ-KA25VAR1.TH SUZ-KA35VA.TH SUZ-KA35VAR1.TH SUZ-KA25VAH.TH SUZ-KA25VAHR1.TH SUZ-KA35VAH.TH SUZ-KA35VAHR1.TH SUZ-KA50VA.TH SUZ-KA50VA

1.TH

SUZ-KA50VAR2.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH

SUZ-KA60VAR2.TH SUZ-KA71VA.TH SUZ-KA71VA

1.TH

CONTENTS

1.

COMBINATION OF INDOOR AND OUTDOOR UNITS

....

2

2. TECHNICAL CHANGES

....................................

3

3. PART NAMES AND FUNCTIONS

......................

7

4. SPECIFICATION

.................................................

8

5. NOISE CRITERIA CURVES

..............................

12

6. OUTLINES AND DIMENSIONS

........................

13

7. WIRING DIAGRAM

...........................................

15

8. REFRIGERANT SYSTEM DIAGRAM

..............

23

9. PERFORMANCE CURVES

..............................

29

10. ACTUATOR CONTROL

....................................

57

11. SERVICE FUNCTIONS

.....................................

58

12. TROUBLESHOOTING

......................................

58

13. DISASSEMBLY INSTRUCTIONS

...................

103

14. PARTS LIST

....................................................

113

15. RoHS PARTS LIST

.........................................

119

Indication of model name

Note: This service manual describes technical data of the outdoor units. RoHS compliant products have <G> mark on the spec name plate. For servicing of RoHS compliant products, refer to the RoHS Parts List.

HFC

utilized

R410A

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

August 2011

REVISED EDITION-G

Revision:

• Errors in "11. SERVICE FUNCTIONS" and "12. TROUBLESHOOTING" have been corrected

in REVISEDEDITION-G.

• Please void OC322 REVISED EDITION-F.

SUZ-KA25VA

SUZ-KA35VA

SUZ-KA25VAH

SUZ-KA35VAH

SUZ-KA50VA

SUZ-KA60VA

SUZ-KA71VA

Outdoor unit [Model names]

[Service Ref.]

2

1

COMBINATION OF INDOOR AND OUTDOOR UNITS

Heat pump type

Outdoor unit

SUZ-

SLZ-KA25VA(L).TH

SLZ-KA35VA(L).TH

SLZ-KA50VA(L).TH

SEZ-KC25VA.W

SEZ-KA35VA.TH

SEZ-KA50VA.TH

SEZ-KA60VA.TH

SEZ-KA71VA.TH

SEZ-KD25VA(L).TH

SEZ-KD35VA(L).TH

SEZ-KD50VA(L).TH

SEZ-KD60VA(L).TH

SEZ-KD71VA(L).TH

MFZ-KA25VA-E1

MFZ-KA35VA-E1

MFZ-KA50VA-E1

—

OC320

—

OC321

OB409

Indoor unit

Service

Manual No.

Service Ref.

Heat pump without electric heater

KA25VA(H).TH KA25VA(H)R1.TH

KA60VA

(1)

.TH

KA60VAR2.TH

KA71VA

(1)

.TH

KA50VA

(1)

.TH

KA50VAR2.TH

HWE0711

KA35VA(H).TH KA35VA(H)R1.TH

(NOTE) • Please refer to the service manual of indoor unit or the technical data book for the combination data.

• Only MFZ-KA·VA series can be connected to SUZ-KA·VAH series.

1-1. INDOOR UNIT SERVICE MANUAL

1-2. TECHNICAL DATA BOOK

OCS03

OC322G

3

2

TECHNICAL CHANGES

SUZ-KA50VA1.TH SUZ-KA50VAR2.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

1. OUTDOOR ELECTRONIC CONTROL P.C. BOARD has been changed.

2. Compressor has been changed. (SNB130FLDH(1)

→ SNB130FGBH)

3. High pressure switch has been added. (SUZ-KA60VAR2.TH)

4. Thermistors (RT61, 62, 64, 65, 68) have been changed. (SUZ-KA50VAR2.TH)

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

1. OUTDOOR ELECTRONIC CONTROL P.C. BOARD has been changed.

2. Max. height difference 15m

→

30m (Except when combined with MFZ).

3. Guaranteed operating range Lower limit (Cooling/Outdoor) -10:DB

→

-15:DB (Except when combined with MFZ)

SUZ-KA25VA.TH SUZ-KA35VA.TH

Lower limit (Heating/Outdoor) -10:DB → -15:DB.

SUZ-KA35VAH.TH

Defrost finish temperature has been changed (Refer to 11. SERVICE FUNCTIONS).

SUZ-KA25VA.TH SUZ-KA25VAR1.TH SUZ-KA25VAH.TH SUZ-KA25VAHR1.TH SUZ-KA35VA.TH SUZ-KA35VAR1.TH SUZ-KA35VAH.TH SUZ-KA35VAHR1.TH

1. Inverter P.C. board and Power P.C. board have been changed.

2. Refrigerant circuit has been changed.

• Compressor has been changed. (KNB073FDVH(C) → KNB073FFDHC : SUZ-KA25VA(H)R1.TH) (KNB092FCAH → KNB092FFAHC : SUZ-KA35VA(H)R1.TH)

• Muffler of liquid pipe side has been deleted.

• Muffler of gas pipe side has been changed.

• Capillary tube of liquid pipe side has been added. (SUZ-KA35VA(H)R1.TH)

• 4-way valve and R.V. coil have been changed.

• Specification of LEV body has been changed.

• Stop valve has been changed.

3. Precharged refrigerant amount has been changed. (900g → 800g : SUZ-KA25VA(H)R1.TH)

4. Fan motor has been changed. (RC0J50-AL → RC0J50-DB)

5. Outdoor heat exchanger temperature thermistor (RT68) has been added.

SUZ-A09VR.TH SUZ-KA25VA.TH SUZ-A12VR.TH SUZ-KA35VA.TH

1. Indication of capacity has been changed.(BTU base → kW base)

2. Control method between indoor and outdoor unit has been changed.

3. Power supply method has been changed (change to supply from outdoor unit).

4. Terminal block for power supply has been added.

5. Power P.C. board has been changed.

6. Inverter P.C. board has been changed.

7. Refrigerant circuit has been changed.

•

Compressor has been changed. (KNB073FBVH → KNB073FDVH:SUZ-KA25VA) (KNB092FAAH → KNB092FCAH:SUZ-KA35VA)

• Specification and position of muffler have been changed.

• Path of outdoor heat exchanger has been changed.

• 4-way valve and R.V. coil have been changed.

• Stop valve has been changed.

8. Fan motor has been changed. (AC → DC)

9. Shape of grille has been changed.

10. Shape of service panel has been changed.

11. Shape of propeller has been changed.

12. Symbol on terminal block has been changed (to S1/S2/S3).

OC322G

4

Refrigerant

oil

Refrigerant

New refrigerant

R410A

HFC-32: HFC-125 (50%:50%)

Pseudo-azeotropic refrigerant

Not included

A1/A1

72.6

-51.4

1.557 64

Non combustible

0

1730

From liquid phase in cylinder

Possible

Incompatible oil

None None

Previous refrigerant

R22

R22 (100%)

Single refrigerant

Included

A1

86.5

-40.8

0.94

44.4

Non combustible

0.055 1700

Gas phase

Possible

Compatible oil

Light yellow

None

Refrigerant Composition (Ratio) Refrigerant handling Chlorine Safety group (ASHRAE) Molecular weight Boiling point () Steam pressure [25](Mpa) Saturated steam density [25](Kg/*) Combustibility ODP +1 GWP +2 Refrigerant charge method Additional charge on leakage Kind Color Smell

+1: Ozone Depletion Potential : based on CFC-11 +2: Global Warming Potential : based on CO

2

SUZ-A18VR SUZ-KA50VA.TH SUZ-A24VR SUZ-KA60VA.TH

1. Indication of capacity has been changed.(BTU base → kW base)

2. Power supply method has been changed (change to supply from outdoor unit).

3. Outdoor electronic control P.C. board has been changed.

4. Noise filter P.C. board has been changed.

5. Length of fan motor lead wire has been changed.

6. Shape of relay panel has been changed.

7. Symbol on terminal block has been changed (to S1/S2/S3).

8. Control method between indoor and outdoor unit has been changed.

INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT

• This room air conditioner adopts an HFC refrigerant (R410A) which never destroys the ozone layer.

• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 conditioners. 1 As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/ materials are required. Refer to the table below. 2 Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation, since it is more susceptible to contaminations than R22. 3 For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant piping.) 4 Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent composition change.

OC322G

5

-30 -20 -10 0 10 20

30

40 50 60

-0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

(MPa [Gauge])

R410A

R22

Conversion chart of refrigerant temperature and pressure

Saturated liquid pressure

()

NOTE: The unit of pressure has been changed to MPa on the

international system of units (SI unit system).

The conversion factor is: 1 (MPa [Gauge]) =10.2 (kgf/cm2 [Gauge])

R410A tools Can R22 tools be used?

Gas leak detector

R410A has high pressures beyond the measurement range of existing gauges. Port diameters have been changed to prevent any other refrigerant from being charged into the unit.

Hose material and cap size have been changed to improve the pressure resistance.

Dedicated for HFC refrigerant.

6.35 mm and 9.52 mm

Description

Clamp bar hole has been enlarged to reinforce the spring strength in the tool.

Provided for flaring work (to be used with R22 flare tool). Provided to prevent the back flow of oil. This adapter enables you to use

vacuum pumps. It is difficult to measure R410A with a charging cylinder because the

refrigerant bubbles due to high pressure and high-speed vaporization

No

Yes

New

Gauge manifold

Charge hose

Torque wrench

Flare tool

Flare gauge Vacuum pump

adapter

Electronic scale for refrigerant charging

No: Not substitutable for R410A Yes: Substitutable for R410A

No 12.7 mm and 15.88 mm

1. Tools dedicated for the air conditioner with R410A refrigerant

The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools. The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.

NOTE : The unit of pressure has been changed to MPa on the international system of units (SI unit system).

The conversion factor is: 1 (MPa [Gauge]) =10.2 (kgf/cm2 [Gauge])

New Specification Current Specification

The incompatible refrigerant oil easily separates from refrigerant and is in the upper layer inside the suction muffler. Raising position of the oil back hole enables to back the refrigerant oil of the upper layer to flow back to the compressor.

Since refrigerant and refrigerant oil are compatible with each other, refrigerant oil backs to the compressor through the lower position oil back hole.

Compressor

Suction muffler

Oil back hole

Refrigerant oil

Refrigerant

Compressor

Suction muffler

Oil back hole

Refrigerant oil /Refrigerant

Compressor

OC322G

6

Electronic scale for refrigerant charging

Outdoor unit

Refrigerant gas cylinder operating valve

Refrigerant gas cylinder for R410A with siphon

Refrigerant (liquid)

Service port

Gauge manifold valve (for R410A)

Union

Liquid pipe

Gas pipe

Stop valve

Indoor unit

Charge hose (for R410A)

R410A

Pipe diameter (mm)

6.35

9.52

12.7

15.88

17 22 26 29

Dimension of flare nut (mm)

R22

17 22 24 27

• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less than 0.8mm, as the pressure resistance is insufficient. 2 Flaring work and flare nut Flaring work for R410A pipe differs from that for R22 pipe. For details of flaring work, refer to Installation manual “FLARING WORK”.

3. Refrigerant oil

Apply the special refrigerant oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.

4. Air purge

Do not discharge the refrigerant into the atmosphere.

Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit.

Use the vacuum pump for air purging for the purpose of environmental protection.

5. Additional charge

For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the

outdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.

2. Refrigerant piping

1 Specifications Use the refrigerant pipes that meet the following specifications.

Wall thicknessOutside diameter

Pipe

mm mm

For liquid

For gas

6.35

9.52

12.7

15.88

0.8

1.0

Heat resisting foam plastic Specific gravity 0.045 Thickness 8 mm

Insulation material

OC322G

77

3

PART NAMES AND FUNCTIONS

OUTDOOR UNIT

Air inlet

Air outlet

Drain outlet

Piping

Drain hose

(back and side)

ACCESSORIES



Drain socket

1

SUZ-KA25VAR1.TH SUZ-KA35VAR1.TH

SUZ-KA25VA.TH SUZ-KA35VA.TH

SUZ-KA25VA.TH SUZ-KA35VA.TH SUZ-KA25VAH.TH SUZ-KA35VAH.TH

OUTDOOR UNIT

Air inlet

Piping

Air outlet

(back and side)

Drain hose

Drain outlet

ACCESSORIES





Drain socket Drain cap :33

1

2

SUZ-KA50VA

(1).TH

SUZ-KA60VA(1).TH SUZ-KA71VA

(1).TH

SUZ-KA50VAR2.TH SUZ-KA60VAR2.TH

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA50VAR2.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

SUZ-KA25VAR1.TH SUZ-KA35VAR1.TH SUZ-KA25VAHR1.TH SUZ-KA35VAHR1.TH

OC322G

8

SPECIFICATION

4

Function

Power supply

Outdoor Service Ref.

Starting current *1 Compressor motor current *1 Fan motor current *1 Model Output Winding resistance (at 20) Model

Winding resistance(at 20)

Air flow(High/Low+)

Dimensions WHD Weight Sound level

*1 Fan speed(High+/Low+, High+/Med+/Low+) Fan speed regulator Refrigerant filling capacity(R410A) Refrigerating oil (Model)

A A A

W



*/h

mm

kg dB

rpm

kg

cc

Single phase

230V, 50Hz

3.65

KNB073FDVH(C)

550

U-V 1.53 U-W 1.53

V-W 1.53

RC0J50-AL

WHT-BLK 37.5

BLK-RED 37.5

RED-WHT 37.5

800%550%285

33

46

0.90

320 (NEO22)

Cooling

2.74

0.31

2,058

810+/650

+

2

880+/810+/650

+

3

810+/650

+

2

880+/810+/650

+

3

Heating

3.37

0.28

1,938

SUZ-KA25VA(H).TH

Compressor

Fan

motor

Special

remarks

Electrical

data

SUZ-KA25VA(H)R1.TH

Single phase

230V, 50Hz

3.65

KNB073FFDH(C)

550

U-V 1.70 U-W 1.70

V-W 1.70

RC0J50-DB

WHT-BLK 37.0

BLK-RED 37.0

RED-WHT 37.0

800%550%285

30 46

0.80

320 (NEO22)

Cooling

2.74

0.31

2,058

Heating

3.37

0.28

1,938

SUZ-KA50VA.TH

SUZ-KA50VA

1.TH

Single phase

230V, 50Hz

6.75

0.30

SNB130FLDH or SNB130FLDH1

850

U-V 0.45 U-W 0.45

V-W 0. 45

RC0J60-AA

WHT-BLK 15.2

BLK-RED 15.2

RED-WHT 15.2

840%850%330

53

2

1.60

FLDH: 450/FLDH1: 600(NEO22)

Cooling

6.45

2,940/1,650

+

53/51

+

800/480

+

Heating

6.05

2,940/2,210

+

55/53

+

800/620

+

Capa-

city

SUZ-KA35VA(H)R1.TH

840+/760

+

2

880+/800+/630

+

3

SUZ-KA35VA(H).TH

Single phase

230V, 50Hz

4.75

KNB092FCAH

650

U-V 0.49 U-W 0.49

V-W 0. 49

RC0J50-AL

WHT-BLK 37.5

BLK-RED 37.5

RED-WHT 37.5

2,004

800%550%285

37

1.05

320 (NEO22)

Cooling

4.22

0.33

47

Heating

4.42

0.33

48

840+/760

+

2

880+/800+/630

+

3

Single phase

230V, 50Hz

4.75

KNB092FFAH(C)

650

U-V 1.91 U-W 1.91

V-W 1.91

RC0J50-DB

WHT-BLK 37.0

BLK-RED 37.0

RED-WHT 37.0

2,004

800%550%285

33

1.05

320 (NEO22)

Cooling

4.22

0.33

47

Heating

4.42

0.33

48

NOTE : Test conditions are based on ISO 5151 Cooling : Indoor D.B. 27: W.B . 19: Outdoor D.B. 35: W.B. 24: Heating : Indoor D.B. 20: W.B. 15: Outdoor D.B. 7: W.B. 6: Refrigerant piping length (one way): 5m *1 Measured under rated operating frequency. w Reference value

OC322G

99

SUZ-KA50VAR2.TH

SUZ-KA60VA.TH

SUZ-KA60VA

1.TH

SUZ-KA71VA.TH

SUZ-KA71VA

1.TH

SUZ-KA60VAR2.TH

Function

Power supply

Outdoor Service Ref.

Starting current *1 Compressor motor current *1 Fan motor current *1 Model Output Winding resistance (at 20) Model

Winding resistance(at 20)

Air flow(High/Low+)

Dimensions WHD Weight Sound level

*1 Fan speed(High+/Low+, High+/Med+/Low+) Fan speed regulator Refrigerant filling capacity(R410A) Refrigerating oil (Model)

A A A

W



* /h

mm

kg

dB

rpm

kg

cc

Compressor

Fan

motor

Special

remarks

Electrical

data

Single phase

230V, 50Hz

10.30

0.30

TNB220FMCH(T)

1300

U-V 1.41 U-W 1.41

V-W 1.41

RC0J60-AA

WHT-BLK 15.2

BLK-RED 15.2

RED-WHT 15.2

840%850%330

58

2

2.00

870 (NEO22)

Cooling

10.00

2,940/1650

+

53/51

+

800/480

+

Heating

9.60

2,940/2,210

+

55/53

+

800/620

+

Capa-

city

Single phase

230V, 50Hz

6.75

0.30

SNB130FGBH(T)

900

U-V 0.98 U-W 0.98

V-W 0. 98

RC0J60-AA

WHT-BLK 15.2

BLK-RED 15.2

RED-WHT 15.2

840%850%330

53

2

1.60

450 (NEO22)

Cooling

6.45

2,940/1,650

+

53/51

+

800/480

+

Heating

6.05

2,940/2,210

+

55/53

+

800/620

+

Single phase

230V, 50Hz

9.75

0.30

SNB130FLDH or SNB130FLDH1

850

U-V 0.45 U-W 0.45

V-W 0. 45

RC0J60-AA

WHT-BLK 15.2

BLK-RED 15.2

RED-WHT 15.2

840%850%330

53

2

1.80

FLDH: 450/FLDH1: 600 (NEO22)

Cooling

8.05

2,940/1650

+

53/51

+

800/480

+

Heating

9.45

2,940/2,210

+

55/53

+

800/620

+

Single phase

230V, 50Hz

9.75

0.30

SNB130FGBH(T)

900

U-V 0.98 U-W 0.98

V-W 0.98

RC0J60-AA

WHT-BLK 15.2

BLK-RED 15.2

RED-WHT 15.2

840%850%330

53

2

1.80

450 (NEO22)

Cooling

8.05

2,940/1650

+

53/51

+

800/480

+

Heating

9.45

2,940/2,210

+

55/53

+

800/620

+

NOTE : Test conditions are based on ISO 5151 Cooling : Indoor D.B. 27: W.B . 19: Outdoor D.B. 35: W.B. 24: Heating : Indoor D.B. 20: W.B. 15: Outdoor D.B. 7: W.B. 6: Refrigerant piping length (one way): 5m *1 Measured under rated operating frequency. w Reference value

OC322G

10

Model

Item

Current transformer

Smoothing capacitor

Diode module

Fuse

Defrost heater

Intelligent power module

Expansion valve coil

Reactor

Current-detecting resistor

Current-limiting resistor

Terminal block

Relay

R.V. coil

Heater protector

SUZ-KA25VA.TH

(CT)

(CT761, CT781)

(

C63A, C63B, C63C

)

(DB61, DB65)

(F61)

(F71, F801, F901)

(H)

(IPM)

(LEV)

(L61)

(R61)

(R831)

(

R64A, R64B

)

(TB1,TB2)

(X63)

(X64)

(X66)

(21S4)

(26H)

SUZ-KA25VAH.TH SUZ-KA35VA.TH SUZ-KA35VAH.TH

ETA19Z59BZ

ETQ19Z71AY

620420V

D25×B60

250V 20A

250V 3.15A

PS21244-A-203

CAD-MD12ME 12VDC

10A 23.0mH

25m 5W

5.1 5W

3P

G5NB-1a

G4A-1A-PS

STF-01AJ503

—

230V 130W

G5NB-1a

Open 45

—

230V 130W

G5NB-1a

Open 45

45m 5W (1 element) 50m 5W (2 elements)

Specifications and rating conditions of main electric parts

Model

Item

Smoothing capacitor

Current transformer

Fuse

Intelligent power module

High pressure switch

Intelligent power module

Reactor

Expansion valve coil

Power factor controller

Resistor

Solenoid coil relay

Terminal block

Relay

R.V. coil

(CB1,2,3)

(CT1,2)

(CT61)

(F64)

(F801)

(F911)

(HC930)

(HPS)

(IPM)

(L)

(LEV)

(PFC)

(R64A,B)

(R937A,B)

(RS1~4)

(SSR61)

(TB1)

(TB2)

(X64)

(21S4)

560 450V

ETQ19Z68AY

ETQ19Z53AY

250V 2A

250V 3.15A

250V 1A

PS21661-RZ

PS21244-A

340μH 20A

DC12V

PS51259-A

1010W

1.12W 2%

0.04 7W

TLP3506

3P

G4A

AC 220 - 240V

SUZ-KA50VA.TH

SUZ-KA50VA

1.TH

SUZ-KA60VA.TH

SUZ-KA60VA

1.TH

SUZ-KA60VAR2.TH

SUZ-KA71VA.TH

SUZ-KA71VA

1.TH

— ACB-DB156ACB-DB156 (for R2)

SUZ-KA25VA.TH SUZ-KA25VAH.TH SUZ-KA35VA.TH SUZ-KA35VAH.TH

SUZ-KA50VA.TH SUZ-KA50VA

1.TH

SUZ-KA60VA.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

OC322G

11

SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH

SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

SUZ-KA50VAR2.TH

Model

Item Current

transformer

20 A(CT) 15 A(CT761, CT781)

Smoothing capacitor

620 μF 420 V

(C61)

Diode module

25 A 600 V15 A 600 V(DB61)

(DB65)

Fuse

T20AL250V(F61)

(F701, F801,

F901)

T3.15AL250V

Defrost heater

230 V

130 W

—

230 V

130 W

Intelligent power module

(IPM)

Expansion valve coil

DC 12 V(LEV)

23 mH(L61)Reactor

Currentdetecting resistor

(R61)

45 mΩ 5 W

(1 element) (2 elements)

—

(R61,R62)

(2 elements)

(R825)

(R937, R938,

R939)

—

—(R937A, R937B)

Current-limiting PTC thermistor

(PTC64,

PTC65)

3 P(TB1, TB2)Terminal block

Relay

(X63) (X64)

(21S4)R.V. coil

(TR821)IGBT

(H)

(X66)

Heater protector

(26H)

25 A 600 V

15 A 600 V 20 A 600 V

100 mΩ 5 W

180 mΩ 5 W

25 mΩ 5 W

430 mΩ 2 W

1.1 Ω 2 W

33 Ω

3 A 250 V

20 A 250 V

AC 220 - 240 V

30 A 600 V

(C62, C63)

620

μF 420 V

——

—

3 A 250 V

—

3 A 250 V

——

Open 45°C

—

Open 45°C

——

—

SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH SUZ-KA50VAR2.TH

OC322G

12

NOISE CRITERIA CURVES

5

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

COOLING

FUNCTION

SPL(dB(A))

LINE

High

Med.

FAN SPEED

HEATING

46

Test conditions, Cooling : Dry-bulb temperature 35Wet-bulb temperature (24)

Heating : Dry-bulb temperature 7Wet-bulb temperature 6

SUZ-KA25VA.TH SUZ-KA25VAH.TH

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

COOLING

FUNCTION

SPL(dB(A))

LINE

FAN SPEED

HEATING

47

48

Test conditions, Cooling : Dry-bulb temperature 35Wet-bulb temperature (24)

Heating : Dry-bulb temperature 7Wet-bulb temperature 6

OUTDOORUNIT

MICROPHONE

1m

High Med.

SUZ-KA35VA.TH SUZ-KA35VAH.TH

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

53

55

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

Test conditions, Cooling : Dry-bulb temperature 35Wet-bulb temperature (24)

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

Heating : Dry-bulb temperature 7Wet-bulb temperature 6

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA50VAR2.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH

SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

OC322G

13

6

OUTLINES AND DIMENSIONS

10

69

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

550

280

164.5

99.5

170.5

23

Service panel

Service port

285

344.5

44

400

Air in

Air out

Air in

17.5

Bolt pitch for

installation

304~325

40

Liquid refrigerant pipe joint Refrigerant pipe (flared) :6.35

Gas refrigerant pipe joint Refrigerant pipe (flared) :9.52

43

35

2 holes 10×21

Drain hole :33 (SUZ-KA25/KA35VAH)

REQUIRED SPACE

Basically open 100mm or more without any obstruction in front and on both sides of the unit.

350mm or more

200mm or more

100mm or more

Open two sides of left, right, or rear side.

Drain hole :42 (SUZ-KA25/KA35VA)

Unit: mm

OUTDOOR UNIT

SUZ-KA25VA.TH SUZ-KA25VAH.TH SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH SUZ-KA35VA.TH SUZ-KA35VAH.TH SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

OC322G

14

Unit: mm

30

35

155

90

198

40

515

299

66

34

51

330

360

850

430

500

80

121

840

Open as a rule 500mm or more if the front and both sides are open

100mm or more 200mm or more if there are obstacles to both sides

Open as a rule 500mm or more if the back, both sides and top are open

350mm or more

100mm or more

Service panel

Gas refrigerant pipe joint Refrigerant pipe(flared)

:12.7·····(SUZ-KA50VA) :15.88···(SUZ-KA60/KA71VA)

Liquid refrigerant pipe joint Refrigerant pipe(flared)

:6.35·····(SUZ-KA50/KA60VA) :9.52·····(SUZ-KA71VA)

REQUIRED SPACE

Drain holes :33

OUTDOOR UNIT

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA50VAR2.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

OC322G

1515

7

WIRING DIAGRAM

OUTDOOR UNIT

SUZ-KA25VA.TH SUZ-KA35VA.TH

SYMBOL

CT,CT761,CT781

C63A,C63B,C63C

DB61,DB65

DSA61

F61

F71

F801,F901

IC801

IPM,IC932

SYMBOL

L61

L62,L63MCMF

NR63,NR64

RT61

RT62

RT64

RT65

SYMBOL

R61,R831

R64A,R64B

TB1,TB2

TR821

T801

X63,X64

21S4

LEV

NAME

CURRENT TRANSFORMER

SMOOTHING CAPACITOR

DIODE MODULE

SURGE ABSORBER

FUSE (T20AL250V)

FUSE (T3.15AL250V)

INTELLIGENT POWER DEVICE

INTELLIGENT POWER MODULE

NAME

REACTOR

CMC COIL

COMPRESSOR

OUTDOOR FAN MOTOR

VAR ISTO R

DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

AMBIENT TEMPERATURE THERMISTOR

NAME

CURRENT-DETECTING RESISTOR

CURRENT-LIMITING RESISTOR

TERMINAL BLOCK

SWITCHING POWER TRANSISTOR

TRANSFORMER

RELAY

REVERSING VALVE COIL

EXPANSION VALVE COIL

NOTES:1. About the indoor side electric wiring, refer to

the indoor unit electric wiring diagram for

servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

/: Terminal block, : Connector

MODELS WIRING DIAGRAM

+++

F61

GRN

~/N

230V~

12-24V

230V 50Hz

CIRCUIT BREAKER

PE

RED

BLU

WHITE

GRN/YLW

TB1

POWER

SUPPLY

L

N

TB2

S3

S1

TO INDDOR UNIT

CONNECTING

S2

RED

BLU

WHT

NR63

LDE

4

6

CN726

CN727

TB800

C63B

POWER P.C. BOARD

INVERTER P.C. BOARD

21S4

X63

CN721

1

2

L61

TAB63

3

LD69

RT61 RT62 RT64RT65

CN642

CN641

CN643

21213412

GRN

231

CN601

45

IC801

F901

IC932

CN931

315

42

1

2

3

CN932

5 42

13

MF

LD-V

LD-W

LD-U

3

1

WHT

BLK

RED

V

BLK

WHT

W

U

wc

CN61

IPM

CT781

CT761

2

CN724

LEV

6

R61

N

U

V

W

P

F801

C63C

R831

DB65

DB61

TR821

C63A

T801

LDY

CN725

BLK

LD70

BLK

L63

NR64

DSA61

CT

TAB61

L62

X64

4

F71

TAB62

BLK

BLU

R64AR64B

WHT

OC322G

16

OUTDOOR UNIT

SUZ-KA25VAR1.TH SUZ-KA35VAR1.TH

NOTES:1. About the indoor side electric wiring, refer to

the indoor unit electric wiring diagram for

servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

: Terminal block

OC322G

17

OUTDOOR UNIT

SUZ-KA25VAH.TH SUZ-KA35VAH.TH

SYMBOL

CT,CT761,CT781

C63A,C63B,C63C

DB61,DB65

DSA61

F61

F71

F801,F901

IC801

IPM,IC932

LEV

SYMBOL

L61

L62,L63MCMF

NR63,NR64

RT61

RT62

RT64

RT65

R61,R831

SYMBOL

R64A,R64B

TB1,TB2

TR821

T801

X63,X64,X66

21S4H26H

NAME

CURRENT TRANSFORMER

SMOOTHING CAPACITOR

DIODE MODULE

SURGE ABSORBER

FUSE (T20AL250V)

FUSE (T3.15AL250V)

INTELLIGENT POWER DEVICE

INTELLIGENT POWER MODULE

EXPANSION VALVE COIL

NAME

REACTOR

CMC COIL

COMPRESSOR

OUTDOOR FAN MOTOR

VAR ISTO R

DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

AMBIENT TEMPERATURE THERMISTOR

CURRENT-DETECTING RESISTOR

NAME

CURRENT-LIMITING RESISTOR

TERMINAL BLOCK

SWITCHING POWER TRANSISTOR

TRANSFORMER

RELAY

REVERSING VALVE COIL

DEFROST HEATER

HEATER PROTECTOR

NOTES:1. About the indoor side electric wiring, refer to

the indoor unit electric wiring diagram for

servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

/: Terminal block, : Connector

MODELS WIRING DIAGRAM

IC932

F901

CT

4

3

NR64 NR63

GRN

DSA61

LDE

23145

CN601

LDY

GRN

MF

RT65 RT64RT62RT61

3

12 4

5

21

3

212 4

5

1

3

CN931

CN932

431212

CN643

CN641 CN642

312

X66

CN722

1

2

YLW

BLK BLK

BLKBLK

BLK

1

2

BLK

RED

CN725

6

4

CN727

CN726

TB800

POWER P.C. BOARD

INVERTER P.C. BOARD

21S4

X63

CN721

1

2

IC801

F801

C63C

LD-V

LD-W

LD-U

3

1

WHT

BLK

RED

V

BLK

WHT

W

U

MC

CN61

IPM

CT781

CT761

2

CN724

LEV

6

R61

N

U

V

W

P

L61

BLK

R831

TAB63

LD69

DB65

DB61

LD70

TR821

C63B

C63A

BLK

T801

L63

F61

TAB61

L62

X64

F71

TAB62

BLK

BLU

H

26H

+++

12-24V

TO INDDOR UNIT

CONNECTING

PE

CIRCUIT BREAKER

~/N

230V 50Hz

POWER

SUPPLY

230V

~

RED

BLU

WHITE

GRN/YLW

TB1

L

N

R64A

TB2

S3S1S2

RED

BLU

WHT

R64B

WHT

OC322G

18

OUTDOOR UNIT

SUZ-KA25VAHR1.TH SUZ-KA35VAHR1.TH

NOTES:1. About the indoor side electric wiring, refer to

the indoor unit electric wiring diagram for

servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

: Terminal block

OC322G

19

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH

R64B

YLW

230V~

12-24V

CN912

CN663

WHT

BLU

NOISE

FILTER

P.C.BOARD

BRN

TO INDOOR

UNIT

CONNECTING

RED

S3

RT65

21

CN61

13

GRN/YLW

5

PFC

GRN

LD9

POWER

BOARD

RT64

21

CN3

RED

WHT

RS2

RS1

R64A

RS3

RS4

F801

CN901

NR64

ELECTRONIC

CONTROL

P.C.BOARD

CB1

CB2

CB3

HC930

IPM

NF

BLK

WHT

RED

YLW

BLU

ORN

PNK

GRY

BLU

WHT

GRN

BLU BLU

BLK

BLK BLK

BLK

RED

BLU

L

CT2

CT1

SSR61

U

6

CN7954123 78

CN661

W

CN4

TB2

S1

1

CN601

3

S2

1567

CN702

5321

CN781

13

CN701

12

CN931

LD1LD2

T801

R937A

R937B

CN801

231 34512

MF

CN932

3X64

5123

LDE2

12

CT61

TAB 1

F64

F911

LDE1

21S4

POWER SUPPLY

~/N 230V 50Hz

TAB 2

N

PE

L

TB1

CIRCUIT

BREAKER

4

1

RED

YLW

3

2

RED

S

R

21

CN903

21

CN902

21

CN5

6543 1

CN2

27

TAB 4

V

MC

W

U

V

WHT

RT61 RT62 RT68

LEV

OUTDOOR UNIT

:Terminal block :Connector

3. Symbols below indicate.

2. Use copper conductors only (for field wiring).

diagram for servicing.

refer to the indoor unit electric wiring

1. About the indoor side electric wiring,NOTES:

SYMBOL

NAME

SYMBOL

NAME

CURRENT TRANSFORMER

FUSE (T1AL 250V)

LEV

EXPANSION VALVE COIL

L

REACTOR

IPM

INTELLIGENT POWER MODULE

CT61

FUSE (T2AL 250V)

F64

CT1, 2

CURRENT TRANSFORMER

HC930

INTELLIGENT POWER MODULE

F911

F801

FUSE (T3.15AL 250V)

SMOOTHING CAPACITOR

CB1~3

OUTDOOR FAN MOTOR

POWER FACTOR CONTROLLER

NOISE FILTER

RT61

DISCHARGE TEMPERATURE THERMISTOR

RS1~4

RESISTOR

R937A, B

RESISTOR

MF

MC

COMPRESSOR

R64A,B

RESISTOR

PFC

NF

NR64

VAR IST OR

AMBIENT TEMPERATURE THERMISTOR

SOLENOID COIL RELAY

21S4

REVERSING VALVE COIL

X64

RELAY

TB1

TERMINAL BLOCK

TB2

TERMINAL BLOCK

RT65

FIN TEMPERATURE THERMISTOR

RT64

T801

TRANSFORMER

SSR61

RT68

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

OC322G

20

SUZ-KA50VAR2.TH

POWER SUPPLY

~/N 230V 50Hz

CIRCUIT

BREAKER

TO INDOOR

UNIT

CONNECTING

230V~

12-24V

S3S1S2

TB2

BRN

BLU

RED

L

N

GRN/YLW

TB1

BLK

BRN BLU

F61

BRN

LD-E1

LD-S

LD62

LD61

L62

DSA

PTC65

PTC64

LD63

CT

F701

X64

U

6

14

12

1 3

12

1

3

5

1

3

5

CN724

CN641CN643CN644CN642

RT62

RT61RT65

RT68

RT64

CN932

CN931

MS

3~

INVERTER P.C. BOARD

HC930

R937B

F901

R937A

IC802

T801

F801

C61

C62C63

R61

LD66LD70

DB61

DB65

R825

TR821

IPM

LDU

LDV

LDW

N

P

U

V

W

1

3

BLKBLK

WHT

RED

WHT

RED

MS

3~

MC

U

V

W

ORN YLW

L61

X63

1 2

CN721

21S4

M

LEV

6

2. Use copper conductors only (for field wiring).

diagram for servicing.

refer to the indoor unit electric wiring

1. About the indoor side electric wiring,NOTES:

SYMBOL

NAME

SYMBOL

NAME

SMOOTHING CAPACITOR

FUSE (T20AL 250V)

LEV

EXPANSION VALVE COIL

L61

REACTOR

HC930,IPM

INTELLIGENT POWER DEVICE

C61,62,63

DIODE MODULE

DB61,DB65

CT

CURRENT TRANSFORMER

F701,F801,F901

INTELLIGENT POWER MODULE

F61

DSA

SURGE ABSORBER

FAN MOTOR

CIRCUIT PROTECTION

RT61

DISCHARGE TEMP. THERMISTOR

R937A, B

MF

MC

COMPRESSOR

R825

PTC64,PTC65

R61

CURRENT-DETECTING RESISTOR

AMBIENT TEMP. THERMISTOR

SWITCHING POWER TRANSISTOR

21S4

REVERSING VALVE COIL

X63,X64

RELAY

TB1,TB52

TERMINAL BLOCK

RT65

FIN TEMP. THERMISTOR

RT64

T801

TRANSFORMER

TR821

RT68

OUTDOOR HEAT EXCHANGER

TEMP. THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

FUSE (T3.15AL 250V)

IC802

L62

REACTOR

CURRENT-DETECTING RESISTOR

MF

:Terminal block

3. Symbols below indicate.

OUTDOOR UNIT

OC322G

21

SUZ-KA60VAR2.TH

:Terminal block

3. Symbols below indicate.

2. Use copper conductors only (for field wiring).

diagram for servicing.

refer to the indoor unit electric wiring

1. About the indoor side electric wiringNOTES:

SYMBOL

NAME

SYMBOL

NAME

CURRENT TRANSFORMER

FUSE (T1AL 250V)

LEV

EXPANSION VALVE

L

REACTOR

IPM

INTELLIGENT POWER MODULE

CT61

FUSE (T2AL 250V)

F64

CT1, 2

CURRENT TRANSFORMER

HC930

INTELLIGENT POWER MODULE

F911

F801

FUSE (T3.15AL 250V)

SMOOTHING CAPACITOR

CB1~3

FAN MOTOR

POWER FACTOR CONTROLLER

NOISE FILTER

RT61

DISCHARGE TEMP. THERMISTOR

RS1~4

RESISTOR

R937A, B

RESISTOR

MF

MC

COMPRESSOR

R64A,B

RESISTOR

PFC

NF

NR64

VAR IST OR

AMBIENT TEMP. THERMISTOR

SOLENOID COIL RELAY

21S4

REVERSING VALVE COIL

X64

RELAY

TB1

TERMINAL BLOCK

TB2

TERMINAL BLOCK

RT65

FIN TEMP. THERMISTOR

RT64

T801

TRANSFORMER

SSR61

RT68

OUTDOOR HEAT EXCHANGER TEMP. THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

HPS

HIGH PRESSURE SWITCH

OUTDOOR UNIT

OC322G

22

SUZ-KA71VA.TH SUZ-KA71VA1.TH

BLK

CN902

12

CN903

12

TAB4

X64 3

R64A R64B

RED

2

3

1

4

L

YLW

RED

230V~

12-24V

CN912

CN663

WHT

BLU

NOISE

FILTER

P.C.BOARD

BRN

TO INDOOR

UNIT

CONNECTING

RED

S3

RT65

21

CN61

13

GRN/YLW

5

PFC

GRN

LD9

POWER

BOARD

RT64

21

CN3

HPS

RED

WHT

RS2

RS1 RS3

RS4

F801

CN901

NR64

CN681

ELECTRONIC

CONTROL

P.C.BOARD

CB1

CB2

CB3

HC930

IPM

NF

BLK

WHT

RED

YLW

BLU

ORN

PNK

GRY

BLU

WHT

GRN

BLU BLU

BLK

BLK BLK

BLK

RED

BLU

CT2

CT1

SSR61

U

6

CN7954123 78

CN661

12

W

CN4

TB2

S1

1

CN601

3

S2

1567

CN702

5321

CN781

13

CN701

12

CN931

LD1LD2

T801

R937A

R937B

CN801

23134512

MF

CN932

5123

LDE2

12

CT61

TAB1

F64

F911

LDE1

21S4

POWER SUPPLY

~/N 230V 50Hz

TAB 2

N

PE

L

TB1

CIRCUIT

BREAKER

S

R

21

CN5

6543 1

CN2

27

V

MC

W

U

V

WHT

RT61 RT62 RT68

LEV

OUTDOOR UNIT

:Terminal block :Connector

3. Symbols below indicate.

2. Use copper conductors only (for field wiring).

diagram for servicing.

refer to the indoor unit electric wiring

1. About the indoor side electric wiring,NOTES:

SYMBOL

NAME

SYMBOL

NAME

CURRENT TRANSFORMER

FUSE (T1AL 250V)

LEV

EXPANSION VALVE COIL

L

REACTOR

IPM

INTELLIGENT POWER MODULE

HPS

HIGH PRESSURE SWITCH

CT61

CT1, 2

CURRENT TRANSFORMER

HC930

INTELLIGENT POWER MODULE

F911

F801

FUSE (T3.15AL 250V)

F64

FUSE (T2AL 250V)

SMOOTHING CAPACITORCB1~3

OUTDOOR FAN MOTOR

POWER FACTOR CONTROLLER

NOISE FILTER

RT61

DISCHARGE TEMPERATURE THERMISTOR

RS1~4

RESISTOR

R937A, B

RESISTOR

MF

MC

COMPRESSOR

R64A,B RESISTOR

PFC

NF

NR64

VAR IST OR

FIN TEMPERATURE THERMISTOR

SOLENOID COIL RELAY

21S4

REVERSING VALVE COIL

X64

RELAY

TB1

TERMINAL BLOCK

TB2

TERMINAL BLOCK

RT64

T801

TRANSFORMER

SSR61

AMBIENT TEMPERATURE THERMISTOR

RT65

RT68

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

OC322G

2323

REFRIGERANT SYSTEM DIAGRAM

8

OUTDOOR UNIT

Unit: mm

SUZ-KA25VA.TH SUZ-KA25VAH.TH

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve (with strainer)

Stop valve (with service port)

Capillary tube :3.0×:2.0×240

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe :9.52 (with heat insulator)

Refrigerant pipe :6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Strainer #100

Muffler

Ambient temperature thermistor RT65

Muffler

OUTDOOR UNIT

SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve (with strainer)

Stop valve (with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø9.52 (with heat insulator)

Refrigerant pipe ø6.35 (with heat insulator)

R.V. coil heating ON cooling OFF

Strainer #100

Ambient temperature thermistor RT65

Muffler

Capillary tube ø3.0×ø2.0×240

Outdoor heat exchanger temperature thermistor RT68

Muffler

Outdoor heat exchanger

LEV

OC322G

24

OUTDOOR UNIT

SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve (with strainer)

Stop valve (with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø9.52 (with heat insulator)

Refrigerant pipe ø6.35 (with heat insulator)

R.V. coil heating ON cooling OFF

Strainer #100

Capillary tube ø3.0×ø1.8×600(×2)

LEV

Ambient temperature thermistor

Muffler

Capillary tube ø3.0×ø2.0×240

Outdoor heat exchanger temperature thermistor

Muffler

RT65

RT68

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve (with strainer)

Stop valve (with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe :9.52 (with heat insulator)

Refrigerant pipe :6.35 (with heat insulator)

R.V. coil heating ON cooling OFF

Strainer #100

Capillary tube :3.0×:1.8×600(×2)

LEV

Ambient temperature thermistor RT65

Muffler

OUTDOOR UNIT

SUZ-KA35VA.TH SUZ-KA35VAH.TH

OC322G

25

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH

OUTDOOR UNIT

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube :3.6

×:2.4×50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe :12.7 (SUZ-KA50VA) (with heat insulator) :15.88 (SUZ-KA60VA)

Refrigerant pipe :6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Muffler

#100

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Strainer

#100

Unit: mm

SUZ-KA50VAR2.TH

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve (with strainer)

Stop valve (with service port)

Capillary tube ø3.6×ø2.4×50

Compressor

4-way valve

Refrigerant pipe ø12.7 (with heat insulator)

Refrigerant pipe ø6.35 (with heat insulator)

LEV

Muffler

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Strainer

#100

Refrigerant flow in cooling Refrigerant flow in heating

R.V. coil heating ON cooling OFF

OUTDOOR UNIT

OC322G

26

SUZ-KA71VA.TH SUZ-KA71VA1.TH

OUTDOOR UNIT

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube :3.6×:2.4×50

Capillary tube :1.8

×:0.6×1000

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe :15.88 (with heat insulator)

Refrigerant pipe :9.52 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Oil separator

High-pressure switch

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Strainer

#100

Strainer

#100

Ambient temperature thermistor RT65

Unit:mm

SUZ-KA60VAR2.TH

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube :3.6:2.450

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe :15.88 (with heat insulator)

Refrigerant pipe :6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Muffler

#100

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Strainer

#100

High-pressure switch

OUTDOOR UNIT

OC322G

27

ADDITIONAL REFRIGERANT CHARGE (R410A: g)

Outdoor unit

precharged

900

800

1,050

14m

270

7m

0

6m

0

5m

0

11m

180

Models

Refrigerant piping length (one way)

Calculation : Xg=30g/m%(Refrigerant piping length(m) - 5)

8m

90

9m

120

10m

150

12m

210

13m

240

15m

300

20m

450

SUZ-KA25VA.TH SUZ-KA25VAH.TH

SUZ-KA35VA.TH SUZ-KA35VAH.TH SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH

Refrigerant Piping Max. length A

+ Height difference should be within 12m regardless of which unit, indoor or outdoor position is high.

+ Max. Height

difference 12m

Indoor unit

(SLZ/SEZ)

Outdoor unit

MAX. HEIGHT DIFFERENCE

Refrigerant piping

Max. length: m

A

20

Gas

9.52

Liquid

6.35

Piping size O.D: mm

Models

SUZ-KA25VA.TH SUZ-KA35VA.TH SUZ-KA25VAH.TH SUZ-KA35VAH.TH SUZ-KA25VAR1.TH SUZ-KA35VAR1.TH SUZ-KA25VAHR1.TH SUZ-KA35VAHR1.TH

SUZ-KA25VA.TH SUZ-KA25VAH.TH SUZ-KA25VAR1.TH SUZ-KA25VAHR1.TH SUZ-KA35VA.TH SUZ-KA35VAH.TH SUZ-KA35VAR1.TH SUZ-KA35VAHR1.TH

MAX. REFRIGERANT PIPING LENGTH

OC322G

28

Refrigerant Piping Max. length A

+ Height difference should be within 30m regardless of which unit, indoor or outdoor position is high. Max. Height difference of SUZ-KA50/60/71VA.TH : 15m

SUZ-KA50/60/71VA

1.TH : 30m

SUZ-KA50/60VAR2.TH : 30m

+ Max. Height difference 30m

Indoor unit

Outdoor unit

(SLZ/SEZ)

MAX. HEIGHT DIFFERENCE

Refrigerant piping

Max. length: m

A

30

Gas

12.7

15.88

Liquid

6.35

9.52

SUZ-KA50VA.TH SUZ-KA50VA

1.TH

SUZ-KA50VAR2.TH SUZ-KA60VA.TH

SUZ-KA60VA

1.TH

SUZ-KA60VAR2.TH SUZ-KA71VA.TH

SUZ-KA71VA

1.TH

Model

Piping size O.D: mm

Refrigerant piping length (one way)

Outdoor unit

precharged

15m

160

20m

260

25m

360

30m

460

7m

0

10m

60

Model

SUZ-KA50VA.TH SUZ-KA50VA

1.TH

SUZ-KA50VAR2.TH

SUZ-KA60VA.TH SUZ-KA60VA

1.TH

SUZ-KA60VAR2.TH

1,600

1,800

ADDITIONAL REFRIGERANT CHARGE (R410A: g)

Calculation : Xg=20g/m o (Refrigerant piping length(m)–7)

SUZ-KA50VA.TH SUZ-KA50VA1.TH SUZ-KA50VAR2.TH SUZ-KA60VA.TH SUZ-KA60VA

1.TH SUZ-KA60VAR2.TH

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

MAX. REFRIGERANT PIPING LENGTH

Outdoor unit

precharged

2,000

0 165 440 715 990 1,265

Refrigerant piping length (one way)

15m10m7m

Model

SUZ-KA71VA.TH SUZ-KA71VA

1.TH

20m

25m 30m

Calculation : Xg=55g/m o (Refrigerant piping length(m)-7)

OC322G

2929

PERFORMANCE CURVES

9

Model

SLZ-KA25VA(L)/SUZ-KA25VA SLZ-KA35VA(L)/SUZ-KA35VA SLZ-KA50VA(L)/SUZ-KA50VA

The standard data contained in these specifications applies only to the operation of the air conditioner under normal condition. Operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE

Rated voltage: ±10% (207~253V), 50Hz

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

COOLING HEATING (1) Indoor intake air wet-bulb temperature: W.B. ˚C (1) Indoor intake air dry-bulb temperature: D.B. ˚C (2) Indoor outlet air wet-bulb temperature: W.B. ˚C (2) Indoor outlet air dry-bulb temperature: D.B. ˚C (3) Outdoor intake air dry-bulb temperature: D.B. ˚C (3) Outdoor intake air wet-bulb temperature: W.B. ˚C (4) Total input: W (4) Total input: W

Indoor air wet/dry-bulb temperature difference on the side of the chart on page shows the difference between the

indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb/dry-bulb temperature difference

1. Attach at least 2 sets of wet-and-dry-bulb thermometers to the indoor air inlet as shown in the figure, and at least 2 sets of wet-and-dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.

2. Attach at least 2 sets of wet-and-dry-bulb thermometers to the outdoor air inlet.

Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of the room.

5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL (HEAT) MODE.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

Wet-and dry-bulb thermometers

BACK VIEW

INDOOR UNIT

OUTDOOR UNIT

OC322G

30

Indoor air Wet-bulb temperature

difference (degree)

10.8

10.0

9.2

8.5

7.7

6.9

SUZ-KA50VA

at Rated frequency

Outdoor intake air Dry-bulb temperature ()

-10-15 -5 0 5 101520253035404546

Outdoor intake air Dry-bulb temperature ()

Indoor intake air Wet-bulb temperature(



)

-15 -10 -5 0 5 10 15 20 25 30 35 40 4546

Indoor air Wet-bulb temperature

difference (degree)

8.4

7.8

7.2

6.6

6.0

5.4

SUZ-KA35VA(H)

at Rated frequency

Outdoor intake air Dry-bulb temperature ()

-10-5 0 5 101520253035404546

Outdoor intake air Dry-bulb temperature ()

Indoor intake air Wet-bulb temperature(



)

-10-5 0 5 101520253035404546

Indoor air Wet-bulb temperature

difference (degree)

SUZ-KA25VA(H)

6.4

5.9

5.4

5.0

4.5

4.1

at Rated frequency

Outdoor intake air Dry-bulb temperature () Outdoor intake air Dry-bulb temperature ()

Indoor intake air Wet-bulb temperature(



)

Indoor intake air Wet-bulb temperature()

-10-5 0 5 101520253035404546

OC322G

Mitsubishi SUZ-KA60VA, SUZ-KA25VAH, SUZ-KA25VA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual