Mitsubishi SUZ-KA35VA User 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-KA50VA1.TH
SUZ-KA50VAR2.TH
SUZ-KA60VA.TH
SUZ-KA60VA1.TH
SUZ-KA60VAR2.TH
SUZ-KA71VA.TH
SUZ-KA71VA1.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
1COMBINATION 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
2TECHNICAL CHANGES
SUZ-KA50VA1.TH SUZ-KA50VAR2.TH
SUZ-KA60VA1.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-KA60VA1.TH
SUZ-KA71VA.TH SUZ-KA71VA1.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 CO2
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.
2Take 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.
3For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant
piping.)
4Composition 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
No
No
Yes
Yes
New
New
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.
2Flaring 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, charg-
ing the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
2. Refrigerant piping
1Specifications
Use the refrigerant pipes that meet the following specifications.
Wall thicknessOutside diameter
Pipe mm mm
For liquid
For gas
6.35
9.52
9.52
12.7
15.88
0.8
0.8
0.8
0.8
1.0
Heat resisting foam plastic
Specific gravity 0.045 Thickness
8 mm
Insulation material
OC322G

77
3PART 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-KA60VA1.TH SUZ-KA60VAR2.TH
SUZ-KA71VA.TH SUZ-KA71VA1.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-KA50VA1.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.
wReference value
OC322G

99
SUZ-KA50VAR2.TH SUZ-KA60VA.TH
SUZ-KA60VA1.TH
SUZ-KA71VA.TH
SUZ-KA71VA1.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.
wReference value
OC322G

10
Model
Item
Current transformer
Current transformer
Smoothing capacitor
Diode module
Fuse
Fuse
Defrost heater
Intelligent power module
Expansion valve coil
Reactor
Current-detecting resistor
Current-detecting resistor
Current-limiting resistor
Terminal block
Relay
Relay
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
Current transformer
Fuse
Fuse
Fuse
Intelligent power module
High pressure switch
Intelligent power module
Reactor
Expansion valve coil
Power factor controller
Resistor
Resistor
Resistor
Solenoid coil relay
Terminal block
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
3P
G4A
AC 220 - 240V
SUZ-KA50VA.TH
SUZ-KA50VA1.TH
SUZ-KA60VA.TH
SUZ-KA60VA1.TH
SUZ-KA60VAR2.TH
SUZ-KA71VA.TH
SUZ-KA71VA1.TH
— ACB-DB156ACB-DB156 (for R2)
SUZ-KA25VA.TH SUZ-KA25VAH.TH
SUZ-KA35VA.TH SUZ-KA35VAH.TH
SUZ-KA50VA.TH SUZ-KA50VA1.TH
SUZ-KA60VA.TH SUZ-KA60VA1.TH SUZ-KA60VAR2.TH
SUZ-KA71VA.TH SUZ-KA71VA1.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
Current-
detecting
resistor
(R61) 45 mΩ5 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 mΩ5 W
180 mΩ5 W
25 mΩ5 W
430 mΩ2 W
1.1 Ω2 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
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-KA60VA1.TH SUZ-KA60VAR2.TH
SUZ-KA71VA.TH SUZ-KA71VA1.TH
SUZ-KA25VAR1.TH
SUZ-KA25VAHR1.TH
SUZ-KA35VAR1.TH
SUZ-KA35VAHR1.TH
OC322G

13
6OUTLINES 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
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-KA60VA1.TH SUZ-KA60VAR2.TH
SUZ-KA71VA.TH SUZ-KA71VA1.TH
OC322G

1515
7WIRING 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,L63 MC MF 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) FUSE (T3.15AL250V) INTELLIGENT POWER DEVICE INTELLIGENT POWER MODULE
NAME REACTOR CMC COIL COMPRESSOR OUTDOOR FAN MOTOR VARISTOR 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
12
3
CN932
5
42
13
MF
LD-V
LD-W
LD-U
3
1
WHT BLK RED 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,L63 MC MF
NR63,NR64 RT61 RT62 RT64 RT65 R61,R831
SYMBOL R64A,R64B TB1,TB2 TR821 T801 X63,X64,X66 21S4 H 26H
NAME
CURRENT TRANSFORMER SMOOTHING CAPACITOR DIODE MODULE SURGE ABSORBER FUSE (T20AL250V) FUSE (T3.15AL250V) FUSE (T3.15AL250V) INTELLIGENT POWER DEVICE INTELLIGENT POWER MODULE EXPANSION VALVE COIL
NAME REACTOR CMC COIL COMPRESSOR OUTDOOR FAN MOTOR VARISTOR 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
43
NR64 NR63
GRN
DSA61
LDE
23145
CN601
LDY
GRN
MF
RT65 RT64RT62RT61
3
12 45
21
3212 4513
CN931
CN932
431212
CN643 CN641 CN642
3 1 2
X66
CN722
1 2
YLW
BLK BLK
BLKBLK
BLK 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
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
S3 S1 S2
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-KA60VA1.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 BLK BLK
BLK WHT RED YLW BLU ORN PNK GRY
BLU WHT
GRN
GRN
BLU
BLU
BLK
BLK
BLK
BLK
BLK
BLK
BLK
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 12
CN931
LD1LD2
T801
R937A R937B
CN801
231 34512
MF
CN932
3X64 5123
LDE2
12
CT61
TAB1
F64
F911
LDE1
21S4
POWER SUPPLY ~/N 230V 50Hz
TAB2
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
TAB4 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
LREACTOR
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 VARISTOR
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
S3
S1
S2
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
UU
U
6
14
12
1
3
12
1
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
1
3
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 CURRENT-DETECTING RESISTOR
MF
:Terminal block
3. Symbols below indicate.
OUTDOOR UNIT
OC322G