Argo AE2MI40AH Operating manual

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : AE2MI40AH
AE2MI56AHB
AE3MI68AH
AE4MI80AH
AE2MI40AH
AE4MI80AH
AE2MI56AHB
AE3MI68AH
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Outdoor Model No.
AE2MI40AH
AE2MI56AHB
AE3MI68AH
AE4MI80AH
Capacity
4.0kW
5.6kW
6.8kW
8.0kW
Product Code No.
3 870 310 85 (1 852 349 45)
3 870 310 86 (1 852 349 46)
3 870 310 87 (1 852 349 47)
3 870 310 88 (1 852 349 48)
REFERENCE NO. SM700738
< Applicable Indoor Units >
Wall mounted type
For details about the combination, refer to
"Unit Combination Table" in the Appendix of
this manual.
AWMI22AHL
AWMI27AHL
AWMI35AHL
AWI52AHL
AWI68AHL
NOTE
Destination: Europe
RoHS
WARNING
• This product does not contain any hazardous substances prohibited by the RoHS Directive.
• You are requested to use RoHS compliant parts for maintenance or repair.
• You are requested to use lead-free solder.
FILE NO.
Do not vent R410A into atmosphere : R410A is a fluorinated greenhouse gas,
covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1975.
F-GAS REGULATION (EC) No 842 / 2006

When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
SPECIAL PRECAUTIONS
This symbol refers to a hazard
or unsafe practice which can
result in severe personal
injury or death.
This symbol refers to a hazard
or unsafe practice which can
result in personal injury or
product or property damage.
CAUTION
CAUTION
WARNING
WARNING
Important!
Please Read Before Starting
This air conditioning system meets strict safety and
operating standards. As the installer or service person, it
is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you
must:
Carefully read this instruction booklet before beginning.
Follow each installation or repair step exactly as shown.
Observe all local, state, and national electrical codes.
Pay close attention to all warning and caution notices
given in this manual.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for
a special problem, contact our sales/service outlet or
your certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
Do not supply power to the unit until all wiring and
tubing are completed or reconnected and checked.
Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or
death.
Ground the unit following local electrical codes.
Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.
Install a protective leakage breaker depending on the
installation location (especially a damp or humid
location). If a leakage breaker is not installed, electric
shock can occur.
When Transporting
Be careful when picking up and moving the indoor and
outdoor units. Get a partner to help, and bend your knees
when lifting to reduce strain on your back. Sharp edges or
thin aluminum fins on the air conditioner can cut your
fingers.
When Installing
In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
In a Room
Properly insulate any tubing run inside a room to prevent
"sweating" that can cause dripping and water damage to
walls and floors.
In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
Use the flare method for connecting tubing.
Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leak-free
connection.
Check carefully for leaks before starting the test run.
When Servicing
Tu rn the power off at the main power box (mains) before
opening the unit to check or repair electrical parts and
wiring.
Keep your fingers and clothing away from any moving
parts.
Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left
inside the unit being serviced.
Others
Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously toxic
gas.
Confirm upon completing installation that no refrigerant
gas is leaking. If escaped gas comes in contact with a
stove, gas water heater, electric room heater or other
heat source, it can produce dangerously toxic gas.
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2

Table of Contents
APPLICABLE INDOOR UNITS
1. OPERATING RANGE
2. SPECIFICATIONS
2-1. Unit Specifications
2-2. Major Component Specifications
2-3. Other Component Specifications
3. DIMENSIONAL DATA
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
5. PERFORMANCE DATA
5-1. Temperature Charts
6. ELECTRICAL DATA
6-1. Electric Wiring Diagrams
7. FUNCTIONS
7-1. Explanation of Functions
7-2. Protective Functions
8. TROUBLESHOOTING
8-1. Precautions before Performing Inspection or Repair
8-2. Trouble Diagnosis by Error Monitor Lamps
8-3. Checking the Outdoor System
8-4. Trouble Diagnosis of Each Part
8-5. Trouble Diagnosis of Fan Motor
9. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
9-1. Characteristics of New Refrigerant R410A
9-2. Checklist before Servicing
9-3. Tools Specifically for R410A
9-4. Tubing Installation Procedures
9-5. In Case of Compressor Malfunction
9-6. In Case Refrigerant is Leaking
9-7. Charging Additional Refrigerant
9-8. Retro-Fitting Existing Systems
5
6
7
11
15
16
20
24
41
45
49
52
53
54
55
58
59
59
61
61
62
64
65
65
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Page
3

APPENDIX A INSTALLATION INSTRUCTIONS
APPENDIX B UNIT COMBINATION TABLES
A-1
A-2
.............................................................................
.................................................................................
Page
4

APPLICABLE INDOOR UNITS
AE2MI40AH
Multi-Outdoor Unit
Indoor Unit
YES YES YES NO NO
AE2MI56AHB YES YES YES YES NO
AE3MI68AH YES YES YES YES YES
AE4MI80AH
2-Room
2-Room
4-Room
4-Room YES YES YES YES YES
AWMI22AHL AWMI27AHL AWMI35AHL AWI52AHL AWI68AHL
NOTE 1. The table lists the wall-mounted type of indoor units as representative models.
2. For details on the applicable indoor units other than the wall-mounted type, refer to the catalog.
5

1. OPERATING RANGE
Maximum
Minimum
Maximum
Minimum
32 °C D.B. / 23 °C W.B.
19 °C D.B. / 14 °C W.B.
27 °C D.B.
16 °C D.B.
43 °C D.B.
19 °C D.B.
24 °C D.B. / 18 °C W.B.
_ D.B. /
- 15 °C W.B.
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling
Heating
6

2. SPECIFICATIONS
2-1. Unit Specifications
Outdoor Unit AE2MI40AH
Indoor Unit AWMI27AHL × 2
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Refrigerant / Amount charged at shipment kg
Refrigerant Control
4.1
925
4.0
13,600
( 2.0 to 5.0 )
( 6,800 to 17,100 )
Shipping Volume
Cooling
1,900
Cooling
Net
Shipping
Package Dimensions
Weight
Height ×Width ×Depth
Height ×Width ×Depth
kg
kg
m3
mm
mm
220 to 240V Single-Phase 50Hz
198 to 264
Dimensions & Weight (Outdoor Unit)
Refrigerant Tubing Connections
Unit Dimensions
Electrical Rating
Air Circulation (High)
WPower Input
V
A
Available Voltage Range
Running Amperes
Narrow tube
Wide tube
Refrigerant mm (in.)
Tube Diameter mm (in.)
42.0
45.0
0.22
569 ×790 ×285
645 ×920 ×385
6.35 (1/4") ×2
9.52 (3/8") ×2
mMax. allowable tubing length per unit
Flare Type
20
R410A / 1.7
Electric Expansion Valve
DC Twin Rotary (Inverter)
dB-A
Fan Speeds Auto (Hi, Me, Lo)
Control Microprocessor
Features (Outdoor Unit)
C.O.P.
kW
Performance
%Power Factor 98
W/W -
Power Source
BTU/h
Capacity
m3/h
E.E.R. W/W 4.32
230VVoltage Rating
Type
Number of Connectable Indoor Units
6.15Max. Capacity of Operating Indoor Units kW
Number of Operatable Indoor Units
4.5
15,400
( 2.2 to 5.5 )
( 7,500 to 18,800 )
Heating
1,900
Compressor Locked Rotor Amperes A 14.5
4.1
925
Heating
98
4.86
-
Operation Sound Hi 47 48
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : AWMI27AHL 2units Outdoor Unit : AE2MI40AH 1unit
2. Rating conditions are: Cooling : Indoor air temp. 27°C D.B. / 19°C W.B. Heating : Indoor air temp. 20°C D.B.
Outdoor air temp. 35°C D.B. / 24°C W.B. Outdoor air temp. 7°C D.B. / 6°C W.B.
2-Room Multi Outdoor Unit
2
2
7

Outdoor Unit AE2MI56AHB
Indoor Unit AWMI27AHL × 1 + AWI52AHL × 1
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Refrigerant / Amount charged at shipment kg
Refrigerant Control
7.52
1,695
5.6
19,100
( 2.1 to 6.8 )
( 7,200 to 23,200 )
Shipping Volume
Cooling
2,900
Cooling
Net
Shipping
Package Dimensions
Weight
Height ×Width ×Depth
Height ×Width ×Depth
kg
kg
m3
mm
mm
220 to 240V Single-Phase 50Hz
198 to 264
Dimensions & Weight (Outdoor Unit)
Refrigerant Tubing Connections
Unit Dimensions
Electrical Rating
Air Circulation (High)
WPower Input
V
A
Available Voltage Range
Running Amperes
Narrow tube
Wide tube
Refrigerant mm (in.)
Tube Diameter mm (in.)
65.0
69.0
0.38
740 ×900 ×320
868 ×1,050 ×423
6.35 (1/4") ×2
9.52 (3/8") ×2
mMax. allowable tubing length per unit
Flare Type
25
R410A / 2.8
Electric Expansion Valve
DC Twin Rotary (Inverter)
dB-A
Fan Speeds Auto (Hi, Me, Lo)
Control Microprocessor
Features (Outdoor Unit)
C.O.P.
kW
Performance
%Power Factor 98
W/W -
Power Source
BTU/h
Capacity
m3/h
E.E.R. W/W 3.30
230VVoltage Rating
2-Room Multi Outdoor UnitType
2Number of Connectable Indoor Units
8.65Max. Capacity of Operating Indoor Units kW
2Number of Operatable Indoor Units
7.3
24,900
( 2.4 to 8.4 )
( 8,200 to 28,700 )
Heating
2,900
Compressor Locked Rotor Amperes A 14.5
7.70
1,735
Heating
98
4.21
-
Operation Sound Hi 50 52
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : AWMI27AHL 1unit + AWI52AHL 1unit Outdoor Unit : AE2MI56AHB 1unit
2. Rating conditions are: Cooling : Indoor air temp. 27°C D.B. / 19°C W.B. Heating : Indoor air temp. 20°C D.B.
Outdoor air temp. 35°C D.B. / 24°C W.B. Outdoor air temp. 7°C D.B. / 6°C W.B.
8

Outdoor Unit AE3MI68AH
Indoor Unit AWMI27AHL × 3
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Refrigerant / Amount charged at shipment kg
Refrigerant Control
8.87
2,000
6.8
23,200
( 2.9 to 8.1 )
( 9,900 to 27,600 )
Shipping Volume
Cooling
2,900
Cooling
Net
Shipping
Package Dimensions
Weight
Height ×Width ×Depth
Height ×Width ×Depth
kg
kg
m3
mm
mm
220 to 240V Single-Phase 50Hz
198 to 264
Dimensions & Weight (Outdoor Unit)
Refrigerant Tubing Connections
Unit Dimensions
Electrical Rating
Air Circulation (High)
WPower Input
V
A
Available Voltage Range
Running Amperes
Narrow tube
Wide tube
Refrigerant mm (in.)
Tube Diameter mm (in.)
65.0
69.0
0.38
740 ×900 ×320
868 ×1,050 ×423
6.35 (1/4") ×4
9.52 (3/8") ×3 + 12.7 (1/2") ×1
mMax. allowable tubing length per unit
Flare Type
25
R410A / 2.8
Electric Expansion Valve
DC Twin Rotary (Inverter)
dB-A
Fan Speeds Auto (Hi, Me, Lo)
Control Microprocessor
Features (Outdoor Unit)
C.O.P.
kW
Performance
%Power Factor 98
W/W -
Power Source
BTU/h
Capacity
m3/h
E.E.R. W/W 3.40
230VVoltage Rating
4-Room Multi Outdoor UnitType
4Number of Connectable Indoor Units
12.2Max. Capacity of Operating Indoor Units kW
3Number of Operatable Indoor Units
8.6
29,300
( 3.4 to 9.0 )
( 11,600 to 30,700 )
Heating
2,900
Compressor Locked Rotor Amperes A 14.5
8.87
2,000
Heating
98
4.30
-
Operation Sound Hi 50 52
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : AWMI27AHL 3units Outdoor Unit : AE3MI68AH 1unit
2. Rating conditions are: Cooling : Indoor air temp. 27°C D.B. / 19°C W.B. Heating : Indoor air temp. 20°C D.B.
Outdoor air temp. 35°C D.B. / 24°C W.B. Outdoor air temp. 7°C D.B. / 6°C W.B.
9

Outdoor Unit AE4MI80AH
Indoor Unit AWMI27AHL × 4
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Refrigerant / Amount charged at shipment kg
Refrigerant Control
7.58
1,725
8.0
27,300
( 2.9 to 9.2 )
( 9,900 to 31,400 )
Shipping Volume
Cooling
3,070
Cooling
Net
Shipping
Package Dimensions
Weight
Height ×Width ×Depth
Height ×Width ×Depth
kg
kg
m3
mm
mm
220 to 240V Single-Phase 50Hz
198 to 264
Dimensions & Weight (Outdoor Unit)
Refrigerant Tubing Connections
Unit Dimensions
Electrical Rating
Air Circulation (High)
WPower Input
V
A
Available Voltage Range
Running Amperes
Narrow tube
Wide tube
Refrigerant mm (in.)
Tube Diameter mm (in.)
82.0
86.0
0.45
890 ×900 ×320
1,019 ×1,050 ×423
6.35 (1/4") ×4
9.52 (3/8") ×2 + 12.7 (1/2") ×2
mMax. allowable tubing length per unit
Flare Type
30
R410A / 3.8
Electric Expansion Valve
DC Twin Rotary (Inverter)
dB-A
Fan Speeds Auto (Hi, Me, Lo)
Control Microprocessor
Features (Outdoor Unit)
C.O.P.
kW
Performance
%Power Factor 99
W/W -
Power Source
BTU/h
Capacity
m3/h
E.E.R. W/W 4.64
230VVoltage Rating
4-Room Multi Outdoor UnitType
4Number of Connectable Indoor Units
14.7Max. Capacity of Operating Indoor Units kW
4Number of Operatable Indoor Units
9.4
32,100
( 3.4 to 9.8 )
( 11,600 to 33,400 )
Heating
3,070
Compressor Locked Rotor Amperes A 17.0
8.96
2,040
Heating
99
4.61
-
Operation Sound Hi 50 52
Remarks:
1. The Values shown in performance section and electrical rating section above are based on the following unit combination.
For other combination unit, please refer to the "Unit Combination Tables" in this manual.
Indoor Unit : AWMI27AHL 4units Outdoor Unit : AE4MI80AH 1unit
2. Rating conditions are: Cooling : Indoor air temp. 27°C D.B. / 19°C W.B. Heating : Indoor air temp. 20°C D.B.
Outdoor air temp. 35°C D.B. / 24°C W.B. Outdoor air temp. 7°C D.B. / 6°C W.B.
10

Outdoor Unit AE2MI40AH
2-2-1. Outdoor Unit
Control PCB
Control Circuit Fuse
Controls
Part No.
Microprocessor
250V 25A
CB-CMRV1424EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
cc
WHT - BLU :
RED - WHT :
BLU - RED :
77.5
77.5
77.5
Micro F
VAC
External Finish Acrylic baked-on enamel finish
FV50S ... 350
-
-
Internal Controller
Yes
Aluminum Plate Fin / Copper Tube
2
13
Face Area m2
mm
0.452
Coil
Rows
Fin Pitch
Heat Exchanger Coil
DAJ12-55J71-CR ... 1
Compressor Oil ... Amount
8
50
750 / 750
Ohm
DC Motor
Type
Compressor Model / Nominal Output
Compressor
Coil Resistance (Ambient Temp. 20 °C) Ohm
DC Twin Rotary (Hermetic)
C-6RVN93H0M / 1,000W
R - S :
S - T :
T - R :
0.482
0.482
0.482
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Safety Device
Micro F
VAC
Run Capacitor
Crankcase Heater
Yes
Yes
Yes
Overload Relay CS-7L115 Model
Operation Temp. Open : 115 °C, Close : 95 °C
-
-
-
1 ... D420
Fan
Propeller
Q'ty ... Dia. mm
Type
Type
Over-Current Protection
Fan Motor
Nominal Output
Coil Resistance
Safety Device
Run Capacitor
Type
Model ... Q'ty
No. of Poles
W
2-2. Major Component Specifications
(Ambient Temp. 20 °C)
Rough Measure RPM (Cool:Hi / Heat:Hi)
11

Outdoor Unit AE2MI56AHB
Control PCB
Control Circuit Fuse
Controls
Part No.
Microprocessor
250V 25A
CB-CMRV1924EH
cc FV50S ... 900 Compressor Oil ... Amount
Type
Compressor Model / Nominal Output
Compressor
Coil Resistance (Ambient Temp. 20 °C) Ohm
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
U - V :
V - W :
W - U :
0.720
0.708
0.726
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Safety Device
Micro F
VAC
Run Capacitor
Crankcase Heater
Yes
Yes
Yes
Overload Relay CS-7LN115 Model
Operation Temp. Open : 115 °C, Close : 100 °C
-
-
230V 25W
1 ... D460
Fan
Propeller
Q'ty ... Dia. mm
Type
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
-
Micro F
VAC
External Finish Acrylic baked-on enamel finish
-
-
Internal Controller
Yes
Yes
Aluminum Plate Fin / Copper Tube
2
1.4
Face Area 0.595
Coil
Rows
Heat Exchanger Coil
SIC-71FW-D490-1 ... 1
8
90
750 / 750
Ohm
DC Motor
Type
Over-Current Protection
Over-Heat Protection
(Ambient Temp. 20 °C)
Fan Motor
Nominal Output
Coil Resistance
Safety Device
Rough Measure RPM (Cool:Hi / Heat:Hi)
Run Capacitor
Type
Model ... Q'ty
No. of Poles
W
m2
mm
Fin Pitch
12

Outdoor Unit AE3MI68AH
Control PCB
Control Circuit Fuse
Controls
Part No.
Microprocessor
250V 25A
CB-CMRV2444EH
cc FV50S ... 900 Compressor Oil ... Amount
Type
Compressor Model / Nominal Output
Compressor
Coil Resistance (Ambient Temp. 20 °C) Ohm
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
U - V :
V - W :
W - U :
0.720
0.708
0.726
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Safety Device
Micro F
VAC
Run Capacitor
Crankcase Heater
Yes
Yes
Yes
Overload Relay CS-7LN115 Model
Operation Temp. Open : 115 °C, Close : 100 °C
-
-
230V 25W
1 ... D460
Fan
Propeller
Q'ty ... Dia. mm
Type
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
-
Micro F
VAC
External Finish Acrylic baked-on enamel finish
-
-
Internal Controller
Yes
Yes
Aluminum Plate Fin / Copper Tube
2
1.4
Face Area 0.595
Coil
Rows
Heat Exchanger Coil
SIC-71FW-D490-1 ... 1
8
90
750 / 750
Ohm
DC Motor
Type
Over-Current Protection
Over-Heat Protection
(Ambient Temp. 20 °C)
Fan Motor
Nominal Output
Coil Resistance
Safety Device
Rough Measure RPM (Cool:Hi / Heat:Hi)
Run Capacitor
Type
Model ... Q'ty
No. of Poles
W
m2
mm
Fin Pitch
13

Outdoor Unit AE4MI80AH
Control PCB
Control Circuit Fuse
Controls
Part No.
Microprocessor
250V 25A
CB-CMRV3144EH
cc FV50S ... 1,200 Compressor Oil ... Amount
Type
Compressor Model / Nominal Output
Compressor
Coil Resistance (Ambient Temp. 20 °C) Ohm
DC Twin Rotary (Hermetic)
5JD420XAB22 / 3,000W
U - V :
V - W :
W - U :
0.435
0.441
0.452
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Safety Device
Micro F
VAC
Run Capacitor
Crankcase Heater
Yes
Yes
Yes
Overload Relay CS-7LN115 Model
Operation Temp. Open : 115 °C, Close : 100 °C
-
-
230V 25W
1 ... D460
Fan
Propeller
Q'ty ... Dia. mm
Type
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
-
Micro F
VAC
External Finish Acrylic baked-on enamel finish
-
-
Internal Controller
Yes
Yes
Aluminum Plate Fin / Copper Tube
2
1.4
Face Area 0.723
Coil
Rows
Heat Exchanger Coil
SIC-71FW-D490-1 ... 1
8
90
750 / 750
Ohm
DC Motor
Type
Over-Current Protection
Over-Heat Protection
(Ambient Temp. 20 °C)
Fan Motor
Nominal Output
Coil Resistance
Safety Device
Rough Measure RPM (Cool:Hi / Heat:Hi)
Run Capacitor
Type
Model ... Q'ty
No. of Poles
W
m2
mm
Fin Pitch
14

2-3. Other Component Specifications
00102030405060708090
40
60
80
100
120
140
160
180
200
20
Resistance (k ohm)
Temperature (°C)
40
35
30
25
20
15
10
5
0
- 20 - 15 - 10 - 50 5101520
Temperature (°C)
Resistance (k ohm)
Outdoor air temp sensor
Outdoor heat exchanger sensor
AW / AN sensor
BW / BN sensor
CW / CN sensor
DW / DN sensor
TKS295B
TKS292B
TKS292B
TKS292B
TKS292B
TKS292B
Model No.
of sensor
Sensor Name
1
1
1/1
1/1
0
0
1
1
1/1
1/1
0
0
Quantity of Sensor
1
1
1/1
1/1
1/1
1/1
1
1
1/1
1/1
1/1
1/1
AE2MI40AH AE2MI56AHB AE3MI68AH AE4MI80AH
Sensor Name
Compressor temp sensor TKS293B
Model No.
of sensor
11
Quantity of Sensor
11
AE2MI40AH AE2MI56AHB AE3MI68AH AE4MI80AH
15

295
608 85
790 70
46
336 310 285
4-ID:23.6
ID:18
2-ID:12
569
15
70122
158 70
14246
Wide tube service valve
dia.9.52 (3/8") × 2
Narrow tube service valve
dia.6.35 (1/4") × 2
Unit: mm
3. DIMENSIONAL DATA
Outdoor Unit AE2MI40AH
16

293
608 136
12
900 85
35
369 345
320
ID:18
5-ID:23.6
740
18
75113
150 72
11451
Wide tube service valve
dia.9.52 (3/8") × 2
Narrow tube service valve
dia.6.35 (1/4") × 2
Outdoor Unit AE2MI56AHB
Unit: mm
17

293
608 136
12
35
369 345
320
ID:18
5-ID:23.6
900 85
740
18
75 70113
150 72 70
11451
70
70
Wide tube service valve
dia.9.52 (3/8") × 3
Narrow tube service valve
dia.6.35 (1/4") × 4
Wide tube service valve
dia.12.70 (1/2") × 1
Outdoor Unit AE3MI68AH
Unit: mm
18

293
608 136
12
35
369 345
320
ID:18
5-ID:23.6
900 85
890
18
75 70113
150 73 70
11451
70
70
Wide tube service valve
dia.9.52 (3/8") × 2
Narrow tube service valve
dia.6.35 (1/4") × 4
Wide tube service valve
dia.12.70 (1/2") × 2
Outdoor Unit AE4MI80AH
Unit: mm
19

4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Outdoor Unit AE2MI40AH
Insulation of Refrigerant Tubing
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 8 mm.
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
Wide tube
Thickness:
Min. 8 mm
Insulation
Narrow tube
Thickness:
Min. 8 mm
IMPORTANT
CAUTION
Compressor
4-way
valve
Main
accumulator
Sub
accumulator
Service valve on
narrow tube
Service valve on
wide tube
Wide tube
BN
AN
BW
AW
O.D.9.52mm
O.D.9.52mm
Narrow tube
O.D.6.35mm
O.D.6.35mm
Heat exchanger
Capillary
tube for
split flow
Cooling cycle
Heating cycle
Defrosting cycle
Indoor unit Outdoor unit
Defrost valve
for hot gas bypass
Strainer
S
M
M
Electric
expansion
valve
Muffler
20