Page 1
TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : CLM1972
CLM2472
FILE NO.
CLM3172
Destination: North America
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Product Code No.
1 852 330 33
1 852 330 34
1 852 330 35
< Applicable Indoor Units >
●
Wall mounted type
KMS0772
KMS0972
KMS1272
KMS1872
KMS2472
CLM1972
Capacity at 230V
19,700 BTU/h
25,400 BTU/h
30,600 BTU/h
Outdoor Model No.
CLM1972
CLM2472
CLM3172
CLM2472
CLM3172
NOTE
For details about the combination, refer to
"Unit Combination Table" in the Appendix
of this manual.
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
REFERENCE NO.
SM700680-03
Page 2
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.
This symbol refers to a hazard or
WARNING
CAUTION
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.
SPECIAL PRECAUTIONS
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.
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
WARNING
•
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
When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
installation location (especially a damp or humid
location). If a leakage breaker is not installed, electric
shock can occur.
•
Turn 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
CAUTION
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.
2
Page 3
APPLICABLE INDOOR UNITS
1. OPERATING RANGE
2. SPECIFICATIONS
2-1. Unit Specifications
2-2. Major Component Specifications
2-3. Other Component Specifications
...................................................................................................................
.............................................................................................................
Table of Contents
.....................................................................................................
.......................................................................................
.......................................................................................
Page
4
5
6
12
15
3. DIMENSIONAL DATA
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
5. PERFORMANCE DATA
5-1. Temperature Charts
5-2. Cooling Capacity
5-3. Cooling Capacity (Low Ambient)
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 Monitop Lamps
8-3. Checking the Outdoor System
8-4. Trouble Diagnosis of Each Part
8-5. Trouble Diagnosis of Fan Motor
.....................................................................................................................
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............................................................................................................
................................................................................................................
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............................................................................................
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..........................................................
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16
19
22
36
39
42
45
49
51
52
53
54
58
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
APPENDIX A INSTALLATION INSTRUCTIONS
APPENDIX B UNIT COMBINATION TABLES
........................................................................
...................................................................................................
................................................................................................
............................................................................................
....................................................................................
............................................................................................
..........................................................................................
............................................................................................
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..................................................................................
3
59
60
61
61
62
64
65
65
A-1
A-2
Page 4
APPLICABLE INDOOR UNITS
Indoor Unit
KMS0772
Multi-Outdoor Unit
KMS0972 KMS1272 KMS1872 KMS2472
3-Room
4-Room
4-Room
NOTE
CLM1972
CLM2472
CLM3172
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
The table lists the wall-mounted type of indoor units as representative models.
NO
YES
YES
4
Page 5
1. OPERATING RANGE
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling
Maximum
Minimum
*1 32 °F D.B.: When combined with KMS1872 or KMS2472
23 °F D.B.: When combined with KMS0772, KMS0972 or KMS1272
95 °F D.B. / 71 °F W.B.
67 °F D.B. / 57 °F W.B.
115 °F D.B.
*1
5
Page 6
2. SPECIFICATIONS
2-1. Unit Specifications
Outdoor Unit CLM1972
Indoor Unit KMS0972
× 3
< 230V >
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
7.0
1,570
19,700
5.80
( 9,800 to 19,700 )
( 2.90 to 5.80 )
Shipping Volume
Cooling
16,800
2,900
Net
Shipping
Package Dimensions
Weight
Height × Width × Depth
Height × Width × Depth
Ibs (kg)
Ibs (kg)
cu.ft (m
3
)
(mm)
inch
(mm)
3-Room Multi Outdoor Unit
Outdoor Unit
inch
187 to 253
Dimensions & Weight
Refrigerant Tubing Connections
Unit Dimensions
Electrical Rating
Sensible Capacity
Latent Capacity
WPower Input
V
A
Available Voltage Range
Running Amperes
Operation Sound (High) Cool
Narrow tube
Wide tube
Refrigerant inch (mm)
Tube Diameter inch (mm)
138.9
147.7
12.71
(63.0)
(67.0)
(0.36)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
(740 × 900 × 320)
Outdoor Unit
29-1/8 × 35-7/16 × 12-19/32
1/4 (6.35) × 3
3/8 (9.52) × 3
ft (m)
dB-A
Max. allowable tubing length per unit
Flare Type
82 (25)
R410A / 6.17 (2,800)
Electric Expansion Valve
DC Twin Rotary (Inverter)
Fan Speeds Auto (Hi and multi-steps)
Control Microprocessor
Features
Compressor Locked Rotor Amperes
50
BTU/h
Performance
%Power Factor 98
A 13.0
Type
BTU/h
kW
Total Capacity
BTU/h
SEER BTU/Wh 16.5
3Number of Connectable Indoor Units
3Number of Operatable Indoor Units
230V Single-Phase 60HzVoltage Rating
1,707 (2,900)Air Circulation (High) ft3/min (m3/h)
EER BTU/h/W 12.5
Fuse or Circuit Breaker Capacity A20
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 : KMS0972 3units Outdoor Unit : CLM1972 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
6
Page 7
Outdoor Unit CLM1972
Indoor Unit KMS0972
Type
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 12.5
SEER BTU/Wh 16.5
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A20
Control Microprocessor
Fan Speeds Auto (Hi and multi-steps)
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
Operation Sound (High) Cool
Features
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant inch (mm)
Tube Diameter inch (mm)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
× 3
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 98
A 13.0
dB-A
ft (m)
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
3
cu.ft (m
)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
3-Room Multi Outdoor Unit
3Number of Connectable Indoor Units
3Number of Operatable Indoor Units
208V Single-Phase 60HzVoltage Rating
Cooling
19,700
29-1/8 × 35-7/16 × 12-19/32
33-27/32 × 40-5/8 × 16-1/4
( 9,800 to 19,700 )
5.80
( 2.90 to 5.80 )
16,800
2,900
1,707 (2,900)Air Circulation (High) ft3/min (m3/h)
187 to 253
7.7
1,570
Outdoor Unit
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50
Flare Type
82 (25)
1/4 (6.35) × 3
3/8 (9.52) × 3
Outdoor Unit
(740 × 900 × 320)
(860 × 1,032 × 413)
138.9
(63.0)
147.7
(67.0)
12.71
(0.36)
< 208V >
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 : KMS0972 3units Outdoor Unit : CLM1972 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
7
Page 8
Outdoor Unit CLM2472
Indoor Unit KMS0972
Type
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.9
SEER BTU/Wh 16.2
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A20
Control Microprocessor
Fan Speeds Auto (Hi and multi-steps)
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
Operation Sound (High) Cool
Features
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant inch (mm)
Tube Diameter inch (mm)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
× 3
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 98
A 13.0
dB-A
ft (m)
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
3
cu.ft (m
)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
4-Room Multi Outdoor Unit
4Number of Connectable Indoor Units
3Number of Operatable Indoor Units
230V Single-Phase 60HzVoltage Rating
Cooling
25,400
3/8 (9.52) × 3 + 1/2 (12.7) × 1
29-1/8 × 35-7/16 × 12-19/32
33-27/32 × 40-5/8 × 16-1/4
( 9,800 to 25,400 )
7.50
( 2.90 to 7.50 )
21,400
4,000
1,707 (2,900)Air Circulation (High) ft3/min (m3/h)
187 to 253
11.3
2,560
Outdoor Unit
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
50
Flare Type
82 (25)
1/4 (6.35) × 4
Outdoor Unit
(740 × 900 × 320)
(860 × 1,032 × 413)
138.9
(63.0)
147.7
(67.0)
12.71
(0.36)
< 230V >
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 : KMS0972 3units Outdoor Unit : CLM2472 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
8
Page 9
Outdoor Unit CLM2472
Indoor Unit KMS0972
Type
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.5
SEER BTU/Wh 16.2
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A20
Control Microprocessor
Fan Speeds Auto (Hi and multi-steps)
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
Operation Sound (High) Cool
Features
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant inch (mm)
Tube Diameter inch (mm)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
× 3
Narrow tube
Wide tube
Net
Shipping
BTU/h
BTU/h
BTU/h
3
/min (m3/h)
dB-A
ft (m)
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
4-Room Multi Outdoor Unit
208V Single-Phase 60HzVoltage Rating
Cooling
24,400
kW
V
( 9,800 to 24,400 )
7.20
( 2.90 to 7.20 )
1,707 (2,900)Air Circulation (High) ft
187 to 253
A
WPower Input
%Power Factor 98
A 13.0
Outdoor Unit
DC Twin Rotary (Inverter)
R410A / 6.17 (2,800)
Electric Expansion Valve
Flare Type
82 (25)
1/4 (6.35) × 4
3/8 (9.52) × 3 + 1/2 (12.7) × 1
Outdoor Unit
29-1/8 × 35-7/16 × 12-19/32
(740 × 900 × 320)
33-27/32 × 40-5/8 × 16-1/4
(860 × 1,032 × 413)
138.9
147.7
3
)
12.71
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
4Number of Connectable Indoor Units
3Number of Operatable Indoor Units
20,600
3,800
12.5
2,560
50
(63.0)
(67.0)
(0.36)
< 208V >
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 : KMS0972 3units Outdoor Unit : CLM2472 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
9
Page 10
Outdoor Unit CLM3172
Indoor Unit KMS0972
Type
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 10.9
SEER BTU/Wh 17.6
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A20
Control Microprocessor
Fan Speeds Auto (Hi and multi-steps)
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
Operation Sound (High) Cool
Features
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant inch (mm)
Tube Diameter inch (mm)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
× 4
Narrow tube
Wide tube
Net
Shipping
BTU/h
BTU/h
BTU/h
3
/min (m3/h)
dB-A
ft (m)
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
4-Room Multi Outdoor Unit
230V Single-Phase 60HzVoltage Rating
Cooling
30,600
kW
V
( 9,800 to 30,600 )
9.00
( 2.90 to 9.00 )
1,942 (3,300)Air Circulation (High) ft
187 to 253
A
WPower Input
%Power Factor 99
A 17.0
Outdoor Unit
DC Twin Rotary (Inverter)
R410A / 8.38 (3,800)
Electric Expansion Valve
Flare Type
100 (30.5)
1/4 (6.35) × 4
3/8 (9.52) × 2 + 1/2 (12.7) × 2
Outdoor Unit
35-1/32 × 35-7/16 × 12-19/32
(890 × 900 × 320)
39-3/4 × 40-5/8 × 16-1/4
(1,010 × 1,032 × 413)
174.2
183.0
3
)
15.18
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
4Number of Connectable Indoor Units
4Number of Operatable Indoor Units
25,800
4,800
12.3
2,800
53
(79.0)
(83.0)
(0.43)
< 230V >
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 : KMS0972 4units Outdoor Unit : CLM3172 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
10
Page 11
Outdoor Unit CLM3172
Indoor Unit KMS0972
Type
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 10.2
SEER BTU/Wh 17.6
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A20
Control Microprocessor
Fan Speeds Auto (Hi and multi-steps)
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Refrigerant Control
Operation Sound (High) Cool
Features
Refrigerant Tubing Connections
Max. allowable tubing length per unit
Refrigerant inch (mm)
Tube Diameter inch (mm)
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
× 4
Narrow tube
Wide tube
Net
Shipping
BTU/h
BTU/h
BTU/h
3
/min (m3/h)
dB-A
ft (m)
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
4-Room Multi Outdoor Unit
208V Single-Phase 60HzVoltage Rating
Cooling
28,600
kW
V
( 9,800 to 28,600 )
8.40
( 2.90 to 8.40 )
1,942 (3,300)Air Circulation (High) ft
187 to 253
A
WPower Input
%Power Factor 99
A 17.0
Outdoor Unit
DC Twin Rotary (Inverter)
R410A / 8.38 (3,800)
Electric Expansion Valve
Flare Type
100 (30.5)
1/4 (6.35) × 4
3/8 (9.52) × 2 + 1/2 (12.7) × 2
Outdoor Unit
35-1/32 × 35-7/16 × 12-19/32
(890 × 900 × 320)
39-3/4 × 40-5/8 × 16-1/4
(1,010 × 1,032 × 413)
174.2
183.0
3
)
15.18
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
4Number of Connectable Indoor Units
4Number of Operatable Indoor Units
24,200
4,400
13.6
2,800
53
(79.0)
(83.0)
(0.43)
< 208V >
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 : KMS0972 4units Outdoor Unit : CLM3172 1unit
2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
Outdoor air temp. 95°F D.B./ 75°F W.B.
11
Page 12
2-2. Major Component Specifications
2-2-1. Outdoor Unit
Outdoor Unit CLM1972
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Operation Temp.
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Micro F
VAC
CB-CLM1972
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
FV50S ... 1.91 (900)
U - V :
0.720
V - W :
W - U :
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
230V 30W
0.708
0.726
Yes
Yes
Yes
-
-
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
Over-Heat Protection
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D18-1/8 (D460)
DC Motor
SIC-71FW-D490-1 ... 1
8
750
90
-
Internal Controller
Yes
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
12
Page 13
Outdoor Unit CLM2472
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CLM2572
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
5KD240XAB21 / 1,700W
FV50S ... 1.91 (900)
U - V :
0.720
V - W :
W - U :
0.708
0.726
Yes
Yes
Yes
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
-
-
230V 30W
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D18-1/8 (D460)
DC Motor
SIC-71FW-D490-1 ... 1
8
750
90
-
Internal Controller
Yes
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
13
Page 14
Outdoor Unit CLM3172
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CLM3172
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
5JD420XAB22 / 3,000W
FV50S ... 2.55 (1,200)
U - V :
0.435
V - W :
W - U :
0.441
0.452
Yes
Yes
Yes
CS-7LN115
Open : 239 °F (115 °C), Close : 212 °F (100 °C)
-
-
230V 30W
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D18-1/8 (D460)
DC Motor
SIC-71FW-D490-1 ... 1
8
800
90
-
Internal Controller
Yes
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
18.1
7.75 (0.72)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
14
Page 15
2-3. Other Component Specifications
Sensor Name
Outdoor air temp sensor
Outdoor heat exchanger sensor
AW / AN sensor
BW / BN sensor
CW / CN sensor
DW / DN sensor
Model No.
of sensor
TKS295B
TKS292B
TKS292B
TKS292B
TKS292B
TKS292B
40
35
30
25
20
Resistance (k ohm)
15
10
5
Quantity of Sensor
CLM1972 CLM2472 CLM3172
1
1
1 / 1
1 / 1
1 / 1
0
1
1
1 / 1
1 / 1
1 / 1
1 / 1
1
1
1 / 1
1 / 1
1 / 1
1 / 1
0
Sensor Name
Compressor temp sensor TKS293B
Model No.
of sensor
200
180
160
140
120
100
Resistance (k ohm)
80
60
40
-
4514 23 32 41 50 59 68
(
20)(-15)(-10) (-5) (0) (5) (10) (15) (20)
-
Temperature F ( C)
Quantity of Sensor
CLM1972 CLM2472 CLM3172
11
1
20
0
32 50 68 86 104 122 140 158 176 194
(0) (10) (20) (30) (40) (50) (60) (70) (80) (90)
Temperature F ( C)
15
Page 16
3. DIMENSIONAL DATA
Outdoor Unit CLM1972
23-15/16 5-11/32
11-17/32
1-3/8
ID:23/32
2-ID:15/16
15/32
13-19/32
12-19/32(320)
14-17/32
35-7/16(900)
2-15/16
1-13/16
2-1/16
23/32
Wide tube service valve
dia.3/8" (9.52) × 3
Narrow tube service valve
dia.1/4" (6.35) × 3
29-1/8(740)
2-3/4
2-15/16
5-29/32 2-27/32 2-3/4
2-1/32 4-1/2
4-7/16
Unit: inch(mm)
16
Page 17
Outdoor Unit CLM2472
11-17/32
1-3/8
ID:23/32
23-15/16 5-11/32
15/32
2-ID:15/16
12-19/32(320)
13-19/32
14-17/32
35-7/16(900)
2-15/16
1-13/16
2-1/16
2-13/32
23/32
Wide tube service valve
dia.3/8" (9.52) × 3
Narrow tube service valve
dia.1/4" (6.35) × 4
Wide tube service valve
dia.1/2" (12.70) × 1
29-1/8(740)
2-3/4
2-3/4 2-3/4
2-15/16
5-29/32 2-27/32 2-3/4
2-1/32 4-1/2
4-7/16
Unit: inch(mm)
17
Page 18
Outdoor Unit CLM3172
11-17/32
1-3/8
ID:23/32
23-15/16 5-11/32
15/32
2-ID:15/16
12-19/32(320)
13-19/32
14-17/32
35-7/16(900)
2-15/16
1-13/16
2-1/16
2-13/32
23/32
Wide tube service valve
dia.3/8" (9.52) × 2
Narrow tube service valve
dia.1/4" (6.35) × 4
Wide tube service valve
35-1/32(890)
2-3/4
5-29/32 2-7/8 2-3/4
2-1/32 4-1/2
dia.1/2" (12.70) × 2
2-3/4 2-3/4
2-15/16
4-7/16
Unit: inch(mm)
18
Page 19
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Outdoor Unit CLM1972
Indoor unit Outdoor unit
Service valve on
Wide tube
O.D.3/8"
O.D.3/8"
O.D.3/8"
Narrow tube
O.D.1/4"
O.D.1/4"
O.D.1/4"
wide tube
CW
BW
AW
Header
Service valve on
narrow tube
CN
BN
AN
Strainer Header
Electric
expansion
valve
M
M
M
Sub
accumulator
Main
accumulator
High pressure
switch
H.P.
Compressor
Heat exchanger
Cooling cycle
Insulation of Refrigerant Tubing
IMPORTANT
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.5/16"(8 mm).
After a tube has been insulated,
CAUTION
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
19
Thickness:
Min.5/16"(8 mm)
Wide tube
Insulation
Thickness:
Min.5/16"(8 mm)
Narrow tube
Page 20
Outdoor Unit CLM2472
Indoor unit Outdoor unit
Service valve on
Wide tube
O.D.3/8"
O.D.3/8"
O.D.3/8"
O.D.1/2"
Narrow tube
O.D.1/4"
O.D.1/4"
O.D.1/4"
O.D.1/4"
wide tube
DW
CW
BW
AW
Service valve on
narrow tube
DN
CN
BN
AN
Header
Electric
expansion
valve
M
M
M
M
Strainer Header
Sub
accumulator
Main
accumulator
High pressure
switch
H.P.
Compressor
Heat exchanger
Cooling cycle
Insulation of Refrigerant Tubing
IMPORTANT
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.5/16"(8 mm).
After a tube has been insulated,
CAUTION
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
20
Thickness:
Min.5/16"(8 mm)
Wide tube
Insulation
Thickness:
Min.5/16"(8 mm)
Narrow tube
Page 21
Outdoor Unit CLM3172
Indoor unit Outdoor unit
Service valve on
Wide tube
O.D.3/8"
O.D.3/8"
O.D.1/2"
O.D.1/2"
Narrow tube
O.D.1/4"
O.D.1/4"
O.D.1/4"
O.D.1/4"
wide tube
DW
CW
BW
AW
Service valve on
narrow tube
DN
CN
BN
AN
Header
Electric
expansion
valve
M
M
M
M
Strainer Header
Sub
accumulator
Main
accumulator
High pressure
switch
H.P.
Compressor
Heat exchanger
Cooling cycle
Insulation of Refrigerant Tubing
IMPORTANT
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.5/16"(8 mm).
After a tube has been insulated,
CAUTION
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
21
Thickness:
Min.5/16"(8 mm)
Wide tube
Insulation
Thickness:
Min.5/16"(8 mm)
Narrow tube
Page 22
5. PERFORMANCE DATA
5-1. Temperature Charts
5-1-1. Temperature Charts (CLM1972)
Outdoor Unit CLM1972 Indoor Unit KMS0772 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
188
(1.3)
psig (MPaG)
174
(1.2)
160
(1.1)
Low pressure at wide tube service valve
146
(1.0)
Lo fanHi fan HH fan
p. 86°F (30°C)
77
(25)
Indoor air tem
86
(30)
Outdoor air temperature °F (°C)
80°F (27°C)
75°F (24°C)
95
(35)
(2) Operating current performance chart
Lo fanHi fan HH fan
5
4
Indoor air temp. 86°F (30°C)
86
(30)
80°F (27°C)
75°F (24°C)
95
(35)
3
Operating current (A)
2
77
(25)
Outdoor air temperature °F (°C)
(3) Indoor discharge air performance chart
104
(40)
104
(40)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6t (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
22
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 23
Outdoor Unit CLM1972 Indoor Unit KMS0972 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
188
(1.3)
psig (MPaG)
174
(1.2)
160
(1.1)
Low pressure at wide tube service valve
146
(1.0)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
Lo fanHi fan
6
5
4
Operating current (A)
3
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
HH fan
HH fan
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
86
(30)
Outdoor air temperature °F (°C)
23
80°F (27°C)
75°F (24°C)
95
(35)
HH fan
104
(40)
Page 24
Outdoor Unit CLM1972 Indoor Unit KMS1272 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
160
(1.1)
146
(1.0)
Low pressure at wide tube service valve
132
(0.9)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
Lo fanHi fan
6
5
4
Operating current (A)
3
77
(25)
Outdoor air temperature °F (°C)
Indoor air temp. 86°F (30°C)
86
(30)
80°F (27°C
75°F (24°C)
)
95
(35)
HH fan
HH fan
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
24
95
(35)
HH fan
104
(40)
Page 25
Outdoor Unit CLM1972 Indoor Unit KMS1872 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
160
(1.1)
146
(1.0)
Low pressure at wide tube service valve
132
(0.9)
Lo fanHi fan
77
(25)
Outdoor air temperature °F (°C)
(2) Operating current performance chart
8
Lo fanHi fan
7
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
95
(35)
HH fan
HH fan
104
(40)
6
Operating current (A)
5
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
104
(40)
(3) Indoor discharge air performance chart
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
Indoor discharge air temperature °F (°C)
46.4( 8)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
HH fan
104
(40)
25
Page 26
5-1-2. Temperature Charts (CLM2472)
Outdoor Unit CLM2472 Indoor Unit KMS0772 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
188
(1.3)
psig (MPaG)
174
(1.2)
160
(1.1)
Low pressure at wide tube service valve
146
(1.0)
Lo fanHi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
80°F (27°C)
75°F (24°C)
(2) Operating current performance chart
Lo fanHi fan HH fan
5
4
3
Operating current (A)
2
77
(25)
Outdoor air temperature °F (°C)
Indoor air temp. 86°F (30°C)
80°F (27°C
75°F (24°C)
86
(30)
)
(35)
95
(3) Indoor discharge air performance chart
104
(40)
104
(40)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6t (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
26
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 27
Outdoor Unit CLM2472 Indoor Unit KMS0972 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
188
(1.3)
psig (MPaG)
174
(1.2)
160
(1.1)
Low pressure at wide tube service valve
146
(1.0)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
Lo fanHi fan
6
5
p. 86°F (30°C
4
Operating current (A)
3
77
(25)
Outdoor air temperature °F (°C)
86
(30)
Indoor air tem
80°F (27°C)
75°F (24°C)
95
(35)
HH fan
HH fan
)
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
86
(30)
Outdoor air temperature °F (°C)
27
80°F (27°C)
75°F (24°C)
95
(35)
HH fan
104
(40)
Page 28
Outdoor Unit CLM2472 Indoor Unit KMS1272 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
160
(1.1)
146
(1.0)
Low pressure at wide tube service valve
132
(0.9)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
Lo fanHi fan
6
5
Indoor air temp. 86°F (30°C)
86
(30)
80°F (27°C)
75°F (24°C)
95
(35)
4
Operating current (A)
3
77
(25)
Outdoor air temperature °F (°C)
HH fan
HH fan
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan
77
(25)
Indoor air te
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
28
mp. 86°F (30°
95
(35)
HH fan
C)
104
(40)
Page 29
Outdoor Unit CLM2472 Indoor Unit KMS1872 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
160
(1.1)
146
(1.0)
Low pressure at wide tube service valve
132
(0.9)
Lo fanHi fan
77
(25)
Outdoor air temperature °F (°C)
(2) Operating current performance chart
8
Lo fanHi fan
7
Indoor air tem
86
(30)
80°F (27°C)
75°F (24°C)
p. 86°F (30°C)
95
(35)
HH fan
HH fan
104
(40)
6
Operating current (A)
5
77
(25)
Outdoor air temperature °F (°C)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
(35)
95
104
(40)
(3) Indoor discharge air performance chart
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
Indoor discharge air temperature °F (°C)
46.4( 8)
Lo fanHi fan
77
(25)
Indoor air tem
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
p. 86°F (30°C)
95
(35)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
HH fan
104
(40)
29
Page 30
Outdoor Unit CLM2472 Indoor Unit KMS2472 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
160
(1.1)
146
(1.0)
Low pressure at wide tube service valve
132
(0.9)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
86
(30)
Outdoor air temperature °F (°C)
75°F (24°C)
95
(35)
80°F (27°C)
(2) Operating current performance chart
9
Lo fanHi fan
8
7
Operating current (A)
6
Indoor air temp. 86°F (30°C
80°F (27°C)
75°F (24°C)
HH fan
HH fan
)
104
(40)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
104
(40)
(3) Indoor discharge air performance chart
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
Indoor discharge air temperature °F (°C)
46.4( 8)
Lo fanHi fan
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
C)
75°F (24°
86
(30)
Outdoor air temperature °F (°C)
95
(35)
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
HH fan
104
(40)
30
Page 31
5-1-3. Temperature Charts (CLM3172)
Outdoor Unit CLM3172 Indoor Unit KMS0772 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
146
(1.0)
118
(0.8)
Low pressure at wide tube service valve
90
(0.6)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
80°F (27°C
75°F (24°C)
(2) Operating current performance chart
5
Lo fanHi fan Hi fan HH fan
4
Indoor air temp. 86°F (30°C)
Operating current (A)
3
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
)
104
(40)
80°F (27°C)
75°F (24°C)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
Indoor discharge air temperature °F (°C)
46.4( 8)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
31
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 32
Outdoor Unit CLM3172 Indoor Unit KMS0972 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
146
(1.0)
118
(0.8)
Low pressure at wide tube service valve
90
(0.6)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
5
Lo fanHi fan Hi fan HH fan
4
Indoor air temp. 86°F (30°C)
Operating current (A)
3
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
104
(40)
80°F (27°C)
75°F (24°C)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
32
95
(35)
104
(40)
Page 33
Outdoor Unit CLM3172 Indoor Unit KMS1272 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
146
(1.0)
118
(0.8)
Low pressure at wide tube service valve
90
(0.6)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
(2) Operating current performance chart
6
Lo fanHi fan Hi fan HH fan
5
Indoor air temp. 86°F (30°C)
4
Operating current (A)
3
77
(25)
86
(30)
Outdoor air temperature °F (°C)
95
(35)
104
(40)
80°F (27°C)
75°F (24°C)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
Lo fanHi fan Hi fan HH fan
Indoor air temp. 86°F (30°C)
77
(25)
86
(30)
Outdoor air temperature °F (°C)
33
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 34
Outdoor Unit CLM3172 Indoor Unit KMS1872 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
146
(1.0)
Indoor air temp. 86°F (30°C)
118
(0.8)
Low pressure at wide tube service valve
90
(0.6)
77
(25)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
Lo fanHi fan
95
(35)
(2) Operating current performance chart
9
8
7
6
Operating current (A)
5
4
77
(25)
Outdoor air temperature °F (°C)
80°F (27°C)
Indoor air temp. 86°F (30°C)
75°F (24°C)
86
(30)
Lo fanHi fan
95
(35)
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
77
(25)
Indoor air temp. 86°F (30°C)
86
(30)
Outdoor air temperature °F (°C)
34
Lo fanHi fan
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 35
Outdoor Unit CLM3172 Indoor Unit KMS2472 × 1
Cooling Characteristics
(RH : 46%, Indoor fan speed : High fan)
(230V, 60Hz)
(1) Low pressure performance chart
174
(1.2)
psig (MPaG)
146
(1.0)
118
(0.8)
Low pressure at wide tube service valve
90
(0.6)
77
(25)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C)
86
(30)
Outdoor air temperature °F (°C)
Lo fanHi fan
95
(35)
(2) Operating current performance chart
12
11
10
Operating current (A)
9
8
77
(25)
Outdoor air temperature °F (°C)
Indoor air temp. 86°F (30°C)
80°F (27°C)
75°F (24°C
86
(30)
Lo fanHi fan
)
95
(35)
104
(40)
104
(40)
(3) Indoor discharge air performance chart
NOTE
• This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on
the indoor unit type.
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
(In this case, be sure to stop all the indoor units where performance is not being checked.)
• The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.
68.0(20)
64.4(18)
60.8(16)
57.2(14)
53.6(12)
50.0(10)
46.4( 8)
Indoor discharge air temperature °F (°C)
77
(25)
Outdoor air temperature °F (°C)
Indoor air temp. 86°F (30°C)
86
(30)
35
Lo fanHi fan
80°F (27°C)
75°F (24°C)
95
(35)
104
(40)
Page 36
5-2. Cooling Capacity
Outdoor Unit : CLM1972
Indoor Unit : KMS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY: 19,700 BTU/h AIR FLOW RATE: 883 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 65 75 85 95 105 115
59 76 (24.4) SHC 19,800 19,100 18,350 17,770 16,890 15,940
(15.0) 80 (26.7) SHC 19,800 19,100 18,350 17,770 16,890 15,940
63 76 (24.4) SHC 17,130 16,960 16,610 16,270 15,930 15,590
(17.2) 80 (26.7) SHC 20,390 20,040 19,290 18,720 17,800 16,820
o
F (oC) AMBIENT TEMP. oF (oC)
TC 19,800 19,100 18,350 17,770 16,890 15,940
72 (22.2) SHC 17,470 17,130 16,790 16,610 16,270 15,760
84 (28.9) SHC 19,800 19,100 18,350 17,770 16,890 15,940
88 (31.1) SHC 19,800 19,100 18,350 17,770 16,890 15,940
TC 20,790 20,060 19,290 18,720 17,800 16,820
72 (22.2) SHC 14,210 13,870 13,530 13,360 13,010 12,670
84 (28.9) SHC 20,790 20,060 19,290 18,720 17,800 16,820
88 (31.1) SHC 20,790 20,060 19,290 18,720 17,800 16,820
TC 21,790 21,050 20,240 # 19,700 18,750 17,720
(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)
72 (22.2) SHC 10,960 10,610 10,270 10,100 9,760 9,410
67 76 (24.4) SHC 13,870 13,700 13,360 13,190 12,840 12,330
(19.4) 80 (26.7) SHC 16,960 16,790 16,440 16,270 15,930 15,590
84 (28.9) SHC 20,040 19,700 19,360 19,190 18,750 17,720
88 (31.1) SHC 21,790 21,050 20,240 19,700 18,750 17,720
TC 22,800 22,040 21,210 20,700 19,720 18,470
72 (22.2) SHC 7,360 7,190 6,840 6,670 6,330 5,980
71 76 (24.4) SHC 10,440 10,100 9,930 9,760 9,410 8,900
(21.7) 80 (26.7) SHC 13,530 13,190 13,010 12,840 12,500 11,990
84 (28.9) SHC 16,440 16,270 15,930 15,760 15,410 15,070
88 (31.1) SHC 19,530 19,190 19,010 18,840 18,500 17,990
TC 23,690 22,920 22,080 21,600 20,590 18,950
75 76 (24.4) SHC 7,010 6,840 6,500 6,330 6,160 5,640
(23.9) 80 (26.7) SHC 10,100 9,930 9,590 9,410 9,240 8,730
84 (28.9) SHC 13,190 12,840 12,670 12,500 12,160 11,640
88 (31.1) SHC 16,100 15,930 15,590 15,410 15,070 14,730
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Rating conditions (#)
: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
36
Page 37
Outdoor Unit : CLM2472
Indoor Unit : KMS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY: 25,400 BTU/h AIR FLOW RATE: 883 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 65 75 85 95 105 115
59 76 (24.4) SHC 23,130 22,790 22,270 22,100 21,410 17,290
(15.0) 80 (26.7) SHC 25,690 24,800 23,840 23,190 22,040 17,290
63 76 (24.4) SHC 19,700 19,360 19,010 18,670 18,160 15,930
(17.2) 80 (26.7) SHC 22,960 22,440 22,100 21,760 21,240 17,700
o
F (oC) AMBIENT TEMP. oF (oC)
TC 25,690 24,800 23,840 23,190 22,040 17,290
72 (22.2) SHC 20,210 19,870 19,360 19,010 18,500 16,440
84 (28.9) SHC 25,690 24,800 23,840 23,190 22,040 17,290
88 (31.1) SHC 25,690 24,800 23,840 23,190 22,040 17,290
TC 26,810 25,900 24,910 24,290 23,110 17,700
72 (22.2) SHC 16,790 16,440 15,930 15,760 15,240 13,010
84 (28.9) SHC 25,870 25,530 24,910 24,290 23,110 17,700
88 (31.1) SHC 26,810 25,900 24,910 24,290 23,110 17,700
TC 27,910 26,980 25,970 # 25,400 24,180 18,070
(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)
72 (22.2) SHC 13,360 13,010 12,500 12,330 11,810 9,590
67 76 (24.4) SHC 16,270 15,930 15,590 15,240 14,900 12,500
(19.4) 80 (26.7) SHC 19,360 19,010 18,670 18,330 17,990 15,590
84 (28.9) SHC 22,440 22,100 21,590 21,410 20,900 18,070
88 (31.1) SHC 25,360 25,020 24,670 24,330 23,810 18,070
TC 28,980 28,030 26,990 26,500 25,010 18,380
72 (22.2) SHC 9,590 9,240 8,900 8,730 8,210 5,980
71 76 (24.4) SHC 12,670 12,330 11,810 11,640 11,130 8,900
(21.7) 80 (26.7) SHC 15,760 15,410 15,070 14,730 14,210 11,990
84 (28.9) SHC 18,670 18,330 17,990 17,810 17,300 15,070
88 (31.1) SHC 21,590 21,240 20,900 20,730 20,210 17,990
TC 29,880 28,920 27,870 27,460 25,330 18,590
75 76 (24.4) SHC 9,070 8,730 8,390 8,210 7,530 5,470
(23.9) 80 (26.7) SHC 12,160 11,810 11,470 11,300 10,610 8,560
84 (28.9) SHC 15,070 14,730 14,390 14,390 13,700 11,640
88 (31.1) SHC 18,160 17,810 17,470 17,300 16,610 14,560
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Rating conditions (#)
: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
37
Page 38
Outdoor Unit : CLM3172
Indoor Unit : KMS0972 × 4
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY: 30,600 BTU/h AIR FLOW RATE: 1,177 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 65 75 85 95 105 115
59 76 (24.4) SHC 29,470 29,010 28,320 28,010 22,960 16,690
(15.0) 80 (26.7) SHC 31,170 30,000 28,730 28,010 22,960 16,690
63 76 (24.4) SHC 24,900 24,440 23,980 23,520 21,240 16,970
(17.2) 80 (26.7) SHC 29,010 28,550 28,100 27,640 23,400 16,970
o
F (oC) AMBIENT TEMP. oF (oC)
TC 31,170 30,000 28,730 28,010 22,960 16,690
72 (22.2) SHC 25,580 24,900 24,440 23,980 21,700 16,690
84 (28.9) SHC 31,170 30,000 28,730 28,010 22,960 16,690
88 (31.1) SHC 31,170 30,000 28,730 28,010 22,960 16,690
TC 32,490 31,280 29,960 29,310 23,400 16,970
72 (22.2) SHC 21,010 20,550 19,870 19,640 17,120 14,610
84 (28.9) SHC 32,490 31,280 29,960 29,310 23,400 16,970
88 (31.1) SHC 32,490 31,280 29,960 29,310 23,400 16,970
TC 33,790 32,540 31,170 # 30,600 23,770 17,200
(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)
72 (22.2) SHC 16,440 15,980 15,290 15,070 12,550 10,270
67 76 (24.4) SHC 20,320 19,870 19,410 19,180 16,670 14,150
(19.4) 80 (26.7) SHC 24,440 23,980 23,520 23,300 20,780 17,200
84 (28.9) SHC 28,550 28,100 27,410 27,180 23,770 17,200
88 (31.1) SHC 32,440 31,980 31,170 30,600 23,770 17,200
TC 35,020 33,730 32,320 31,860 24,020 17,350
72 (22.2) SHC 11,410 10,950 10,490 10,490 7,750 5,690
71 76 (24.4) SHC 15,520 15,070 14,610 14,380 11,640 9,580
(21.7) 80 (26.7) SHC 19,640 19,180 18,720 18,500 15,980 13,690
84 (28.9) SHC 23,520 23,070 22,610 22,610 19,870 17,350
88 (31.1) SHC 27,640 27,180 26,720 26,500 23,750 17,350
TC 36,040 34,730 33,270 32,940 24,130 17,390
75 76 (24.4) SHC 10,720 10,270 9,810 9,810 7,070 5,240
(23.9) 80 (26.7) SHC 14,840 14,610 14,150 13,920 11,180 9,350
84 (28.9) SHC 18,950 18,500 18,040 17,810 15,290 13,240
88 (31.1) SHC 22,840 22,380 21,920 21,920 19,180 17,350
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Rating conditions (#)
: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B.
: Outdoor Ambient Temp. 95 °F (35 °C) D.B.
2.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
38
Page 39
5-3. Cooling Capacity (Low Ambient)
Outdoor Unit : CLM1972
Indoor Unit : KMS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity (Low Ambient) >
RATING CAPACITY: 19,700 BTU/h AIR FLOW RATE: 883 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 20 25 35 45 55
59 76 (24.4) SHC 20,000 19,990 19,980 20,080 19,930
(15.0) 80 (26.7) SHC 20,000 19,990 19,980 20,080 19,930
63 76 (24.4) SHC 17,130 17,130 17,130 17,130 17,130
(17.2) 80 (26.7) SHC 20,210 20,210 20,210 20,210 20,210
o
F (oC) AMBIENT TEMP. oF (oC)
TC 20,000 19,990 19,980 20,080 19,930
72 (22.2) SHC 17,640 17,640 17,640 17,640 17,470
84 (28.9) SHC 20,000 19,990 19,980 20,080 19,930
88 (31.1) SHC 20,000 19,990 19,980 20,080 19,930
TC 20,440 20,460 20,540 20,740 20,650
72 (22.2) SHC 14,040 14,040 14,040 14,210 14,210
84 (28.9) SHC 20,440 20,460 20,540 20,740 20,650
88 (31.1) SHC 20,440 20,460 20,540 20,740 20,650
TC 20,760 20,840 21,030 21,350 21,340
(-6.7) (-3.9)(1.7) (7.2)(12.8)
72 (22.2) SHC 10,610 10,610 10,610 10,790 10,790
67 76 (24.4) SHC 13,530 13,530 13,530 13,700 13,700
(19.4) 80 (26.7) SHC 16,610 16,610 16,790 16,790 16,790
84 (28.9) SHC 19,530 19,700 19,700 19,870 19,870
88 (31.1) SHC 20,760 20,840 21,030 21,350 21,340
TC 20,940 21,080 21,400 21,890 21,960
72 (22.2) SHC 6,840 6,840 7,010 7,190 7,190
71 76 (24.4) SHC 9,760 9,760 9,930 10,100 10,100
(21.7) 80 (26.7) SHC 12,840 13,010 13,010 13,190 13,190
84 (28.9) SHC 15,930 15,930 16,100 16,270 16,270
88 (31.1) SHC 18,840 18,840 19,010 19,190 19,190
TC 20,940 21,140 21,610 22,270 22,450
75 76 (24.4) SHC 6,160 6,330 6,330 6,670 6,670
(23.9) 80 (26.7) SHC 9,240 9,410 9,590 9,760 9,760
84 (28.9) SHC 12,330 12,330 12,500 12,670 12,670
88 (31.1) SHC 15,240 15,240 15,410 15,590 15,760
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
2. Above data represents the value when the operation frequency of a compressor is fixed.
39
Page 40
Outdoor Unit : CLM2472
Indoor Unit : KMS0972 × 3
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity (Low Ambient) >
RATING CAPACITY: 25,400 BTU/h AIR FLOW RATE: 883 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 20 25 35 45 55
59 76 (24.4) SHC 23,130 23,130 23,130 23,300 23,130
(15.0) 80 (26.7) SHC 25,460 25,470 25,520 25,730 25,640
63 76 (24.4) SHC 19,360 19,360 19,360 19,530 19,530
(17.2) 80 (26.7) SHC 22,440 22,440 22,440 22,610 22,610
o
F (oC) AMBIENT TEMP. oF (oC)
TC 25,460 25,470 25,520 25,730 25,640
72 (22.2) SHC 20,040 20,210 20,210 20,210 20,210
84 (28.9) SHC 25,460 25,470 25,520 25,730 25,640
88 (31.1) SHC 25,460 25,470 25,520 25,730 25,640
TC 25,690 25,760 25,960 26,330 26,350
72 (22.2) SHC 16,270 16,270 16,440 16,610 16,610
84 (28.9) SHC 25,360 25,360 25,530 25,700 25,700
88 (31.1) SHC 25,690 25,760 25,960 26,330 26,350
TC 25,720 25,870 26,240 26,820 26,960
(-6.7) (-3.9)(1.7) (7.2)(12.8)
72 (22.2) SHC 12,500 12,500 12,670 12,840 12,840
67 76 (24.4) SHC 15,410 15,410 15,590 15,930 15,930
(19.4) 80 (26.7) SHC 18,500 18,670 18,670 19,010 19,010
84 (28.9) SHC 21,590 21,590 21,760 21,930 21,930
88 (31.1) SHC 24,500 24,500 24,670 25,020 25,020
TC 25,480 25,730 26,310 27,150 27,450
72 (22.2) SHC 8,390 8,390 8,730 8,900 9,070
71 76 (24.4) SHC 11,300 11,470 11,640 11,990 11,990
(21.7) 80 (26.7) SHC 14,390 14,560 14,730 15,070 15,070
84 (28.9) SHC 17,470 17,470 17,640 17,990 18,160
88 (31.1) SHC 20,390 20,560 20,730 21,070 21,070
TC 24,970 25,340 26,160 27,280 27,740
75 76 (24.4) SHC 7,360 7,530 7,870 8,210 8,390
(23.9) 80 (26.7) SHC 10,610 10,610 10,960 11,300 11,470
84 (28.9) SHC 13,530 13,700 13,870 14,210 14,390
88 (31.1) SHC 16,440 16,610 16,960 17,300 17,300
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
2. Above data represents the value when the operation frequency of a compressor is fixed.
40
Page 41
Outdoor Unit : CLM3172
Indoor Unit : KMS0972 × 4
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity (Low Ambient) >
RATING CAPACITY: 30,600 BTU/h AIR FLOW RATE: 1,177 CFM
INDOOR OUTDOOR
ENT. TEMP.
W.B. D.B. 20 25 35 45 55
59 76 (24.4) SHC 29,240 29,240 29,240 29,470 29,470
(15.0) 80 (26.7) SHC 30,720 30,740 30,820 31,120 31,060
63 76 (24.4) SHC 24,210 24,210 24,440 24,670 24,670
(17.2) 80 (26.7) SHC 28,320 28,550 28,550 28,780 28,780
o
F (oC) AMBIENT TEMP. oF (oC)
TC 30,720 30,740 30,820 31,120 31,060
72 (22.2) SHC 25,350 25,350 25,350 25,580 25,350
84 (28.9) SHC 30,720 30,740 30,820 31,120 31,060
88 (31.1) SHC 30,720 30,740 30,820 31,120 31,060
TC 30,940 31,030 31,290 31,810 31,890
72 (22.2) SHC 20,320 20,320 20,550 20,780 20,780
84 (28.9) SHC 30,940 31,030 31,290 31,810 31,890
88 (31.1) SHC 30,940 31,030 31,290 31,810 31,890
TC 30,870 31,070 31,550 32,350 32,590
(-6.7) (-3.9)(1.7) (7.2)(12.8)
72 (22.2) SHC 15,290 15,290 15,520 15,750 15,980
67 76 (24.4) SHC 19,180 19,410 19,410 19,870 19,870
(19.4) 80 (26.7) SHC 23,300 23,520 23,750 23,980 23,980
84 (28.9) SHC 27,410 27,410 27,640 27,870 28,100
88 (31.1) SHC 30,870 31,070 31,520 31,980 31,980
TC 30,450 30,780 31,540 32,680 33,130
72 (22.2) SHC 9,810 10,040 10,270 10,720 10,950
71 76 (24.4) SHC 13,920 13,920 14,150 14,610 14,840
(21.7) 80 (26.7) SHC 18,040 18,270 18,500 18,720 18,950
84 (28.9) SHC 21,920 22,150 22,380 22,840 22,840
88 (31.1) SHC 26,040 26,040 26,270 26,720 26,950
TC 29,690 30,160 31,240 32,750 33,430
75 76 (24.4) SHC 8,890 8,890 9,350 9,810 10,040
(23.9) 80 (26.7) SHC 13,010 13,010 13,470 13,920 14,150
84 (28.9) SHC 16,890 17,120 17,350 17,810 18,040
88 (31.1) SHC 20,780 21,010 21,470 21,920 22,150
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
2. Above data represents the value when the operation frequency of a compressor is fixed.
41
Page 42
6. ELECTRICAL DATA
6-1. Electric Wiring Diagrams
Outdoor Unit CLM1972
BLK
REACTANCE
WHT
1 1
1 1
(1P)CONNECTOR
1
RELAY
6
GRN/YEL
WHT
WHT
WHT
(1P)
CONNECTOR
4
5
BLK
1
1
2
2
WHT
WHT
WHT
WHT
WHT
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
THERMISTOR
OUTDOOR
BLK
BLK
YEL
YEL
THERMISTOR
COIL
BLK
BLK
TERMINAL PLATE
GRN/YEL
WHT
WHT
(2P)CONNECTOR
CRANKCASE
HEATER
BN THERMISTOR
4
4
3
3
2
2
1
1
BW THERMISTOR
AN THERMISTOR
4
4
3
3
2
2
1
1
AW THERMISTOR
4
4
3
3
2
2
1
1
BLK
BLK
THERMISTOR
COMPRESSOR
WARNING
SUPPLY
POWER
L2
L1
GND
1
2
FERRITE
WHT
W
W
ACIN1
ACIN2
W
E
25A
WW
E1
W
L2 L1
W
HEATER0
W
HEATER1
B-TH
A-TH
COMP
COIL/OUTDOOR
1
1
2 2
WHT
CORE
W
SI-A
MV0
MV1
SICOM2
KS10
CONTROLLER
KS22
KS23FM
U
WVWWW
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
UNIT
A INDOOR
123456789
BLK
TERMINAL PLATE
RED
BLU
W
SI-B
GRY
5
5
4
4
3
3
2
2
1
1
5
5
4
4
3
3
2
2
1
1
W
4
3
2
1
6
5
4
3
2
1
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
BLU
WHT
RED (PNK)
BLU
RED
BLK
BLK
BLU
RED
BLK
BLU
RED
BLK
BLU
RED
BLK
ORG
WHT
BRN
BLU
RED
WHT
WHT
WHT
WHT
WHT
WHT
WHT
BLK
YEL
RED
ORG
GRY
BLK
YEL
RED
ORG
4
3
2
1
6
5
4
3
2
1
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
1 2 3 4 5 6 7
CORE
FERRITE
5
5
4
4
3
3
2
2
1
1
5
5
4
4
3
3
2
2
1
1
W
4
3
2
1
6
5
4
CN02
3
2
1
8
7
6
5
CN03
4
3
2
1
3
2
1
TO INDOOR UNIT
UNIT
B INDOOR
BLK
BLK
WHT
WHT
MV0
MAGNETIC COIL
MV1
MAGNETIC COIL
W
SI-C
SICOM2
GRY
5
5
BLK
4
4
CN01
MV2C-TH
EXPANSION BOARD
(7P)CONNECTOR
ORG
WHT
BRN
BLU
RED
WHT
3
2
1
YEL
3
3
RED
2
2
ORG
1
1
4
4
3
3
2
2
1
1
FM
FAN MOTOR
BLU
WHT
RED (PNK)
(3P)CONNECTOR
UNIT
C INDOOR
BRN
5
4
3
2
1
YEL
YEL
YEL
YEL
R/V
GND
5
4
3
2
1
CM
S/U C/W
WHT
MV2
MAGNETIC COIL
BLK
11
CN THERMISTOR
(2P)CONNECTOR
CW THERMISTOR
BLK
BLK
SWITCH
HIGH PRESSURE
MOTOR
COMPRESSOR
22
11
(2P)CONNECTOR
WHT WHT
OVERLOAD
RELAY(OLR)
22
RED
WHT WHT
8FA2-5257-59400-1
42
Page 43
Outdoor Unit CLM2472
BLK
REACTANCE
WHT
1 1
1 1
(1P)CONNECTOR
1
RELAY
6
GRN/YEL
WHT
WHT
WHT
(1P)
CONNECTOR
4
5
BLK
1
1
2
2
WHT
WHT
WHT
WHT
WHT
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
THERMISTOR
OUTDOOR
BLK
BLK
YEL
YEL
THERMISTOR
COIL
BLK
BLK
TERMINAL PLATE
GRN/YEL
WHT
WHT
(2P)CONNECTOR
CRANKCASE
HEATER
BN THERMISTOR
4
3
2
1
BW THERMISTOR
AN THERMISTOR
4
3
2
1
AW THERMISTOR
4
3
2
1
BLK
BLK
THERMISTOR
COMPRESSOR
SUPPLY
POWER
L2
L1
1
2
WHT
W
W
ACIN1
ACIN2
WW
E
25A
W
E1
W
L2 L1
W
HEATER0
W
HEATER1
4
3
B-TH
2
1
4
3
A-TH
2
1
4
3
2
1
COMP
COIL/OUTDOOR
1
1
2 2
WARNING
GND
WHT
CORE
FERRITE
W
W
SI-A
SI-B
MV0
MV1
W
SICOM2
KS10
CONTROLLER
KS22
KS23FM
U
WVWWW
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
UNIT
UNIT
A INDOOR
123456789
BLK
BLK
GRY
BLK
YEL
RED
ORG
GRY
BLK
YEL
RED
ORG
WHT
BLU
5
5
4
4
3
3
MV0
2
2
1
1
5
5
4
4
3
3
MV1
2
2
1
1
SI-C
W
SICOM2
SI-D
4
4
3
3
CN01
2
2
MV2C-TH
1
1
6
6
5
5
4
4
MV3
CN02
3
3
2
2
1
1
TERMINAL PLATE
RED
5
5
4
4
3
3
2
2
1
1
5
5
4
4
3
3
2
2
1
1
WHT
BLU
4
RED
3
WHT
2
BLK
1
WHT
6
BLK
5
BLU
4
RED
3
WHT
2
BLK
1
EXPANSION BOARD
BLU
8
BLK
BLK
ORG
WHT
BRN
BLU
RED
RED
WHT
BLU
RED
WHT
WHT
7
6
5
4
3
2
1
7
6
5
4
3
2
1
1 2 3 4 5 6 7
CORE
FERRITE
8
7
6
5
CN03
4
3
D-TH
2
1
(7P)CONNECTOR
ORG
WHT
BRN
BLU
RED
WHT
3
3
2
2
1
1
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
BLU
WHT
RED (PNK)
B INDOOR
BLK
WHT
MAGNETIC COIL
MAGNETIC COIL
W
W
5
5
4
4
3
3
2
2
1
1
5
5
4
4
3
3
2
2
1
1
4
4
3
3
2
2
1
1
4
4
3
3
2
2
1
1
FM
BLU
WHT
RED (PNK)
(3P)CONNECTOR
TO INDOOR UNIT
UNIT
C INDOOR
101112
WHT
BRN
GRY
5
5
BLK
4
4
YEL
3
3
RED
MV2
2
2
ORG
1
1
GRY
5
5
BLK
4
4
YEL
3
3
RED
MV3
2
2
ORG
1
1
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
FAN MOTOR
R/V
CM
S/U C/W
UNIT
D INDOOR
GND
GRY
WHT
MAGNETIC COIL
BLK
11
22
CN THERMISTOR
MAGNETIC COIL
(2P)CONNECTOR
CW THERMISTOR
DN THERMISTOR
DW THERMISTOR
BLK
BLK
SWITCH
HIGH PRESSURE
MOTOR
COMPRESSOR
11
22
(2P)CONNECTOR
WHT WHT
WHT WHT
OVERLOAD
RELAY(OLR)
RED
8FA2-5257-59600-1
43
Page 44
Outdoor Unit CLM3172
BLK
CORE
REACTANCE
WHT
1 1
1 1
(1P)CONNECTOR
1
RELAY
6
FERRITE
WHT
WHT
WHT
(1P)
CONNECTOR
4
5
BLK
1
1
2
2
WHT
WHT
WHT
WHT
WHT
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
THERMISTOR
OUTDOOR
BLK
BLK
YEL
YEL
THERMISTOR
COIL
BLK
GRN/YEL
GRN/YEL
WHT
WHT
(2P)CONNECTOR
CRANKCASE
HEATER
BN THERMISTOR
BW THERMISTOR
AN THERMISTOR
AW THERMISTOR
L1
BLK
1
TERMINAL PLATE
W
WW
W
W
W
W
4
4
3
3
B-TH
2
2
1
1
4
4
3
3
A-TH
2
2
1
1
4
4
3
3
2
2
1
1
COIL/OUTDOOR
BLK
BLK
THERMISTOR
COMPRESSOR
SUPPLY
POWER
L2
2
WHT
WHT
W
ACIN1
ACIN2
E
25A
E1
L2 L1
HEATER0
HEATER1
COMP
1
1
2 2
WARNING
GND
W
W
SI-A
SI-B
5
4
3
MV0
2
1
5
4
3
MV1
2
1
W
SICOM2
4
3
KS10
2
1
6
CONTROLLER
U
WVWWW
5
4
KS22
3
2
1
8
7
6
5
KS23FM
4
3
2
1
7
6
5
4
3
2
1
BLU
WHT
RED (PNK)
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
UNIT
UNIT
A INDOOR
123456789
BLK
BLK
GRY
BLK
YEL
RED
ORG
GRY
BLK
YEL
RED
ORG
WHT
BLU
5
5
4
4
3
3
MV0
2
2
1
1
5
5
4
4
3
3
MV1
2
2
1
1
SI-C
W
SICOM2
SI-D
4
4
3
3
CN01
2
2
MV2C-TH
1
1
6
6
5
5
4
4
MV3
CN02
3
3
2
2
1
1
TERMINAL PLATE
RED
5
4
3
2
1
5
4
3
2
1
WHT
BLU
RED
WHT
BLK
WHT
BLK
BLU
RED
WHT
BLK
EXPANSION BOARD
BLU
8
8
RED
7
7
WHT
6
6
BLK
5
5
BLU
CN03
4
4
RED
3
3
BLK
ORG
WHT
BRN
BLU
RED
WHT
WHT
7
6
5
4
3
2
1
2
1
1 2 3 4 5 6 7
CORE
FERRITE
D-TH
2
1
(7P)CONNECTOR
ORG
WHT
BRN
BLU
RED
WHT
3
3
2
2
1
1
B INDOOR
BLK
WHT
MAGNETIC COIL
MAGNETIC COIL
W
W
5
5
4
4
3
3
2
2
1
1
5
5
4
4
3
3
2
2
1
1
4
4
3
3
2
2
1
1
4
4
3
3
2
2
1
1
FM
BLU
WHT
RED (PNK)
(3P)CONNECTOR
TO INDOOR UNIT
UNIT
C INDOOR
101112
WHT
BRN
GRY
5
5
BLK
4
4
YEL
3
3
RED
MV2
2
2
ORG
1
1
GRY
5
5
BLK
4
4
YEL
3
3
RED
MV3
2
2
ORG
1
1
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
FAN MOTOR
R/V
CM
S/U C/W
UNIT
D INDOOR
GND
GRY
WHT
MAGNETIC COIL
BLK
11
22
CN THERMISTOR
MAGNETIC COIL
(2P)CONNECTOR
CW THERMISTOR
DN THERMISTOR
DW THERMISTOR
BLK
BLK
SWITCH
HIGH PRESSURE
MOTOR
COMPRESSOR
11
22
(2P)CONNECTOR
WHT WHT
WHT WHT
OVERLOAD
RELAY(OLR)
RED
8FA2-5257-89500-1
44
Page 45
7. FUNCTIONS
7-1. Explanation of Functions
NOTE
The numerical values such as temperature, frequency, time and current in parentheses are an example
of CLM3172 and the values are different from the other models.
INITIAL
Control/conditions
Breaker is ON. Power is supplied to the indoor and outdoor unit
The ON/OFF operation
button on the remote
controller is pressed.
If automatic operation mode has been selected
with the remote controller, operation begins in
SENSOR DRY, or COOL mode depending
on the room temperature and
outdoor temperature at the time operation starts.
Depending on the operational mode, refer to the SENSOR DRY, or COOL item.
Unit operation Explanation
control circuits, however the unit remains stopped.
Positioning of the outdoor unit electric expansion
valve is performed.
This applies in the case of automatic
COOL operation.
45
Page 46
Control/conditions
Unit operation Explanation
COOL
The ON/OFF operation
button on the remote
controller is pressed.
The room temperature
has reached the
desired temperature.
The thermostat turns
OFF.
The thermostat turns
ON again.
The operation lamp illuminates.
The indoor fan operates at the set fan speed.
The outdoor unit stops.
The outdoor unit starts.
(Compressor and the outdoor fan start.)
When the frequency reaches Hz,
frequency increases are stopped for a period
of seconds. (Refer to Table 1.)
The frequency then increases.
The indoor temperature and the desired
temperature are approximately equal.
After the thermostat turns ON again, the
outdoor unit will not operate for 3 minutes,
even if the room temperature increases
above the desired temperature.
The outdoor unit does not operate for 3 minutes
even after the breaker is turned ON.
The frequency is increased at the rate of 0.5
Hz every 1 seconds.
This is in order to stabilize the return of oil to the
compressor.
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping
any increases in frequency.
Operating frequency is stabilized in order to
maintain a comfortable environment.
The outdoor unit stops. (It does not stop if the
thermostart for another indoor unit is ON.)
After 3 minutes, the outdoor unit begins operating
automatically.
During these 3 minutes, a pressure balance is
achieved, allowing the compressor to start
more easily.
Freeze prevention In order to protect against freezing, the
Stop All indicator lamps turn OFF. The indoor and
Operation is restarted
within 4 hours (only when
AUTO mode is selected
with the remote
controller).
Operation starts after 4
hours or more have
passed.
When the temperature of the indoor heat
exchanger drops to approximately 35.6 °F
or below, the compressor turns OFF, the
outdoor fan turns OFF, and the indoor fan
continues operating with no changes.
Approximately 3 minutes later, if the
temperature of the indoor heat exchanger
is adove 46.4 °F, the system returns to its
original conditions.
outdoor units stop.
Starts operating in the same operating mode
(COOL) and with the same temperature
settings as before operation was stopped.
New operating mode is determined based on
the temperature conditions at the time the
ON/OFF operation button is pressed.
compressor stops temporarily, until the
temperature of the indoor heat exchanger has
risen.
Within 4 hours after operation was stopped, it is
assumed that there has been no significant
change in the indoor and outdoor temperatures,
and the previous conditions (COOL) are stored.
Frequency control
(Hz)
Outdoor air temperature is below 32 °F.
(senconds)
Outdoor air temperature is 32 °F or higher.
(25) Hz
(35) Hz
(45) Hz
(55) Hz
(120) seconds
(60) seconds
(60) seconds
(180) seconds
Table 1
46
(60) seconds
(30) seconds
(30) seconds
(90) seconds
Page 47
(1/f fluctuation fan)
SENSOR
DRY
Control/conditions
The ON/OFF operation
button on the remote
controller is pressed.
The room temperature
reaches the desired
temperature, and there
is no need for further
cooling.
The room temperature is
59 °F or higher, and is
slightly too cold.
Unit operation Explanation
The operation lamp illuminates.
The indoor fan operates at the set fan speed.
The outdoor unit stops.
The outdoor unit starts.
(Compressor and the outdoor fan start.)
When the frequency reaches Hz,
frequency increases are stopped for a period
of seconds. (Refer to Table 1.)
The frequency then increases.
DRY operation starts
DRY A operation
The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
(Refer to Fig. 1.)
DRY B operation
(1)
The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
The outdoor unit does not operate for 3 minutes
even after the breaker is turned ON.
The frequency is increased at the rate of 0.5
Hz every 1 seconds.
This is in order to stabilize the return of oil to the
compressor.
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping
any increases in frequency.
Operating frequency is stabilized in order to
maintain a comfortable environment.
Operates to effectively dehumidify the air while
not excessively reducing the indoor
temperature.
The indoor unit operates at 1/f fluctuation fan
operation, at a fan speed that does not cause
a chilly feeling.
The compressor operates on a 3-minutes ON,
6-minutes OFF cycle, to prevent the room
temperature from dropping too much.
The room temperature is
below 59 °F.
1/f fluctuation fan
250
200
150
(Step)
100
50
0
(2)
After appoximately 3 minutes, the
compressor turns OFF, the outdoor fan
turns OFF, and the indoor fan turns OFF.
After approximately 6 minutes, the
(3)
conditions return to (1).
Monitoring operation begins.
6-minute cycle
Fig. 1
When monitoring operation begins, the
compressor stops, and the indoor fan operates at
"LL" (very low) speed.
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< Low Ambient Cooling Operation >
NOTE
The following descriptions of low ambient cooling operation are applied only to
CLM1972 and CLM2472
When the outdoor air temperature reaches 57.2 °F (14 °C ) or less during the cooling operation,
the operation mode is switched to low ambient cooling operation.
When the mode is switched from cooling opration to low ambient cooling operation,
the compressor is stopped for 150 seconds temporarily.
When the mode has been switched to low ambient cooling operation,
the outdoor fan speed is lowered as the outdoor air temperature falls.
Outdoor fan speed [ rpm ]
32 °F ( °C )
Outdoor air temperature
When the outdoor air temperature reaches 62.6 °F (17 °C ) or more during the low ambient
cooling operation, the operation mode is switched to cooling operation.
The following protective actions are available to prevent the compressor from operating
with abnormal loads.
At that time, they initiate thermo-off ( stopping the outdoor unit ) of the air conditioner.
Indoor unit : KMS0772
KMS0972
KMS1272
Indoor unit : KMS1872
KMS2472
Outdoor air temp.
°F ( °C )
23 (-5)
19.4 (-7)
Compressor
Indoor fan
Outdoor air temp.
°F ( °C )
32 (0)
28.4 (-2)
Compressor
Indoor fan
ON ON
ON ON
OFF
ON
OFF
ON
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7-2. Protective Functions
NOTE
The numerical values such as temperature, frequency, time and current in parentheses are an example
of CLM3172 and the values are different from the other models.
7-2-1. Current Control
The operating current may rise as a result of causes including increasing cooling loads or decreases in power
voltage. In these cases, the operating frequency is automatically reduced, or operation is stopped, in order to control
the operating current so that it is (20 A) or less.
As a result:
Power breakers and fuses will not be tripped.
•
Operation can continue during this period with somewhat reduced cooling capacity.
•
Operation at normal capacity is restored when the cause of the current rise is eliminated.
•
Description of function
Example of operation for cooling
(20A)
(17A)
(16.6A)
Target
frequency
Power Point C
Point B
Point A
Frequency
Frequency Current
Operates at the target frequency at Point A and below.
•
Stops increases to the frequency between Points A and B.
•
Reduces the frequency by 1 Hz per 0.5 seconds when Point B is exceeded.
•
Stops operation, and restarts it appoximately 3 minutes later, if Point C is exceeded.
•
(May operate when sudden voltage fluctuations occur. Indicates trouble.)
Stops operation
Approx.3 minutes
(1) Automatic frequency control
The operating frequency is reduced automatically, or operation is stopped, in order to control the operating
current so that it is at or below the values shown in the table below.
(20A)
COOL
Point C (peak cut trip)
Point B (Hz reduction)
Point A (Hz increase prohibit) (16.6)
(20.0)
(17.0)
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(2) Current control
The operating frequency upper limits shown in the figure below are established for frequency reduction and
increase-prohibit.
Current(A)
Trip
Hz reduction
Hz increase
prohibit
(16)
(15.6)
0
Example of operation during cooling
Hz reduction
Hz increase prohibit
Hz reduction
Hz increase prohibit
(30)
Frequency (Hz)
7-2-2. Low Start Current
Operation starts at (8 Hz), and the start current is less than the normal operating current. This prevents the flickering
of fluorescent lights or television screens that occurs when ordinary A/C units start.
7-2-3. Compressor Temperature Control
To protect the compressor coil from overheating, the operating frequency is controlled based on the compressor
discharge temperature.
(°F)
Trip
(230)
5Hz every 30 sec. reduction
(223)
2Hz every 30 sec. reduction
(212)
Increase
No control
Compressor discharge temperature
(194)
prohibit range
(Hz reduction)
*
Within the increase-prohibit range, the range changes
to the Hz reduction range (2 Hz every 30 seconds) if
the compressor temperature rises by 4 °F.
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8. TROUBLESHOOTING
8-1. Precautions before Performing Inspection or Repair
Both the indoor unit and outdoor unit include electronic control circuits.
Be sure to pay attention to the following before inspecting or repairing the outdoorside electronic circuits.
High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an
electrical charge (charging voltage DC 311 V) even after the power is turned OFF, and some time is required
for the charge to dissipate.
Be careful not to touch any electrified parts before the control circuit board Power Lamp (red) turns OFF.
If the outdoor control circuit board is normal, approximately 180 seconds will be required for the charge to
dissipate. However, allow at least 30 minutes for the charge to dissipate if it is thought there might be trouble
with the outdoor control circuit board.
For example, if the outdoor control circuit board fuse has blown, approximately 30 minutes will be required to
discharge the high-capacity electrolytic capacitors.
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8-2. Trouble Diagnosis by Error Monitor Lamps
WARNING
the Power Lamp on the P.C.Board is turned off.
8-2-1. Location of the Error Monitor Lamps
Remove the top plate of outdoor unit and the cover of Electrical Component Box.
The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box. (Fig.1)
Heat Exchanger Rear side P.C.Board of Electrical Component Box.
Error Monitor Lamps
Power Lamp
To prevent electric shock, do not inspect or repair until
ERR0
ERR1
ERR2
ERR3
Front side
Fig.1 View from top
8-2-2. Display of the Error Monitor Lamps
If a protective device has activated or there is a sensor failure in the outdoor unit, the 4 error monitor lamps on the
outdoor control circuit board will indicate the nature of the trouble.
: ON : OFF
Error Monitor Lamp
ERR0 ERR1 ERR2 ERR3
Sensor for compressor discharge temp
Sensor for heat excharge temp
Sensor for branch pipe A (Narrow tube)
Sensor for branch pipe B (Narrow tube)
Sensor for branch pipe C (Narrow tube)
Sensor for branch pipe D (Narrow tube)
Outdoor temp sensor
Sensor for branch pipe A (Wide tube)
Sensor for branch pipe B (Wide tube)
Sensor for branch pipe C (Wide tube)
Sensor for branch pipe D (Wide tube)
Error Contents
HIC circuit trouble (current, temp)
Actuation of comp over load relay
Actuation of freeze protection function
Outdoor unit error. Detail of error message indicate on indoor LED
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8-3. Checking the Outdoor System
8-3-1. Checking the outdoor unit
No.
1
2
NOTE
Work procedure
Apply 220 V AC between terminals L1 and L2 on the
•
outdoor unit terminal plate.
Short-circuit the T-RUN terminal to the COM terminal
•
of TEST/T-RUN terminals.
The LED (red) on the control board must illuminate.•
The compressor and fan motor must turn ON.
•
(They turn ON about (70) seconds later after the power
is turned ON.)
Check items (unit operation)
If the above check items are okay, but the outdoor unit does not operate, there may be a faulty
connection between the indoor unit and the outdoor unit.
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8-4. Trouble Diagnosis of Each Part
8-4-1. Problems of Each Part and Inspection Points
For details about the inspection points, refer to the Inspection Points for Each Part.
Problems
Inspection
points
Self-Diagnostics check
Indoor controller
(control unit)
Indoor fan motor
Room temperature
sensor
Heat exchanger
temperature sensor
Indoor unitOutdoor unit
Inter-unit cable
Indoor unit
Indoor unit does not operate.
Operation lamp blinking.
Operation lamp does not illuminate.
Indoor fan dose not turn.
Outdoor unit
Outdoor unit does not operate.
Outdoor fan dose not turn.
The compressor (only) does not
operate.
The compressor stops on occasion.
The compressor speed does not
Others
No. of
Inspection
Points for
Each part
increase.
The electric expansion valve does
not operate.
Does not cool or cooling
performance is inadequate.
Switch circuit board
Outdoor control circuit
board
Diode module
HIC
Electrolytic capacitor
Fuse
Compressor
Compressor protective
sensor
Outdoor fan motor
Coil thermistor
Electric expansion valve
Branch tubing
temperature sensor
(1)
(2)
(3)
(4)
(5)
(6)
(7)
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Problems
Inspection
points
Indoor unit
Indoor unit does not operate.
Operation lamp blinking.
Operation lamp does not illuminate.
Indoor fan dose not turn.
Outdoor unit
Outdoor unit does not operate.
Outdoor fan dose not turn.
The compressor (only) does not
operate.
The compressor stops on occasion.
The compressor speed does not
Others
No. of
Inspection
Points for
Each part
increase.
The electric expansion valve does
not operate.
Does not cool or cooling
performance is inadequate.
Breaker
Refrigerant gas pressure
Others
8-4-2. Inspection Points for Each Part
(1) Outdoor control circuit board
Refer to 8-3-1. Checking the outdoor unit.
NOTE
(2) Fuse
Check it visually or the continuity with a tester.
(3) Compressor
Check for an open circuit in the compressor coil winding.
(4) Compressor protective sensor (compressor discharge temperature thermistor)
Check that the senseor is securely contained in the thermostart holder.
Do not remove or insert the outdoor control circuit board connector when power is being supplied to it.
(The controller will be damaged.)
(8)
(9)
(5) Coil thermistor
Check that the sensor is securely contained in the thermostat holder.
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(6) Electric expansion valve
When replacing the electric expansion valve and coil, be sure to attach the connectors in the correct positions.
Labels are applied to the valve body and coil, corresponding to the connector colors, to identify them.
Controller check
No voltage on circuit board
Check the illumination
of the red Power Lamp.
Replace the controller.
NOTE
Cool the main unit with
a damp cloth or other
means while welding.
When applying
vacuum, use the
special service magnet
and rotate at least 5
revolutions
counterclockwise to
fully open the electric
expansion valve.
Use a multi-meter to measure the voltage (12 V).
When the power is turned ON, the needle will move in the
Voltage varies
Check the coil resistance.
0 ohm
Replace the coil.
No temperature change Temperature changes
Replace the electric
expansion valve.
Approx. 46 +/– 4 ohm
Open and close the
electric expansion valve
by hand to check it.
This part is normal.
following seguence in approximately 10 to 20 seconds for
each point.
*1
Check elsewhere.
Model No. Sequence
CLM1972
CLM2472
CLM3172
MV0 MV1
MV0 MV1 MV2 MV3
Check the resistance between the gray lead
wire and the other wires.
Resistance is OK if it is 46 + / – 4ohm at 68 °F
Use the special service magnet and
rotate 5 revolutions clockwise to fully
close the valve.
Then start the unit and measure the
temperature at the inlet and outlet
tubes of the electric expansion valve.
If the temperature difference is large,
the valve is closed.
Then rotate 5 revolutions
counterclockwise to open the valve.
Operation is normal if the temperature
difference between the 2 tubes drops.
MV2
*1 If you have manually checked the electric expansion valve, be sure to reapply the outdoor power after you have
replaced the wiring. (The position of the elecric expansion valve will changed.)
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(7) Branch tubing temperature sensor
Check that the sensor is securely contained in the thermostat holder.
(8) Breaker
Check whether or not the breaker has been tripped.
Check that the breakers and fuses used are of the specified capacity.
Check that the breaker and its line are exclusive for A/C use.
(9) Refrigerant gas pressure
Start a COOL test run, and messure the temperatures of the A/C intake air and discharge air. Compare the values
with the performance charts.
If the values are higher than the performance charts:
Check for refrigerant shortage or blockage of the refrigerant circuit.
< Assessment of refrigerant shortage >
1. The pressure in the low-pressure section is 5 MPa or more below the value in the performance charts.
2. There is little condensation on the indoor heart exchanger, which overall appears dry.
< Distinguishing between refrigerant shortage and refrigerant circuit blockage >
If the pressure in the low-pressure section does not change when the circuit is charged 2 to 3 times with
refrigerant gas (0.44 lbs each time), or if the change is small, then the problem may not be
refrigerant shortage.
The problem may be a blockage of the refrigerant circuit.
1. Check that there is no internal leakage inside the 4-way valve:
At the low-pressure side tubing, check that there is no temperature difference between the intake and
discharge of the 4-way valve.
2. Check that the electric expansion valve is not blocked. Check as described on the preceding page.
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8-5. Trouble Diagnosis of Fan Motor
This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil
resistance, and the following procedure should be used to check the motor.
Perform the trouble diagnosis by Test Run mode described on Installation Instructions of indoor unit.
Important:
[Trouble symptom 1] The fan does not stop when the outdoor unit stops. Outdoor unit controller trouble
[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.
(Diagnostic procedure)
(Diagnostic results)
(Reference) DC motor connector pin arrangement
(A) Turn OFF the power before connecting or disconnecting the motor connectors.
(B) When performing voltage measurement at the outdoor controller connector for (3) in the table
below, the DC motor will trip and voltage output will stop approximately 10 seconds after
operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor
unit power, then, measure the voltage in Test Run mode.
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor
unit controller (3 locations).
Measurement location
(1) Vm-Gnd: Between pin 1 and pin 4
(2) Vcc-Gnd: Between pin 5 and pin 4
(3) Vsp-Gnd: Between pin 7 and pin 4
All of the above measured values are normal. Fan motor trouble (Replace the motor.)
Any one of the above measured values is not normal. Outdoor unit controller trouble
Pin 1: Vm (red)
Pin 2: Not used
Pin 3: Not used
Pin 4: Gnd (blue)
Pin 5: Vcc (brown)
Pin 6: PG (white)
Pin 7: Vsp (orange)
DC 230V or more
DC 14V or more
After fluctuating 4 times between DC 1.7 to 6.1V
(1 sec. ON) and DC 0 V (1 sec. OFF), the DC
motor trips.
(Replace the controller .)
Normal value
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor
unit operates.
(There is trouble in the system that provides feedback of motor rotation speed from the
motor to the outdoor unit controller.)
[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.
[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.
(Remedy for symptom 3 to 5)
It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble.
Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.
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9. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
9-1. Characteristics of New Refrigerant R410A
9-1-1. What is New Refrigerant R410A?
R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its
refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.
9-1-2. Components (mixing proportions)
HFC32 (50%) / HFC125 (50%)
9-1-3. Characteristics
Less toxic, more chemically stable refrigerant
The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase. Thus, when
there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in
composition of the remaining refrigerant. Therefore, do not add new refrigerant. Instead, recover the
remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified
amount of refrigerant with the new refrigerant at its normal mixed composition state (in liquid phase).
When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid
phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in
gaseous state. Thus, always charge the refrigerant while it is in liquid phase.
CAUTION
Ether-type oil is used for compressor oil for R410A-type units, which is different
from the mineral oil used for R22. Thus more attention to moisture prevention and
faster replacement work compared with conventional models are required.
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9-2. Checklist before Servicing
Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ
between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount of
extrusion) by using the flare spacer.
Diameter of tube D
Dia.1/4" (6.35 mm)
Dia.3/8" (9.52 mm)
Dia.1/2" (12.7 mm)
Dia.5/8" (15.88 mm)
Size of flare
Tubing precautions
Specification A
Flare tool for R410A Conventional flare tool (for R22)
0 to 0.0196"
(0 to 0.5 mm)
D
Flare tool for R410A
A
Conventional flare tool (R22)
D
0.0472"
(1.2 mm)
Spacer
A
Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily
cover the ends of the tubing with caps or tape prior to installation.
Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since
air conditioners with R410A are subject to higher pressure than those using R22 and R407C.
No addition of compressor oil for R410A
No additional charge of compressor oil is permitted.
No use of refrigerant other than R410A
Never use a refrigerant other than R410A.
If refrigerant R410A is exposed to fire
Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sure
to provide ample ventilation during installation work.
Caution in case of R410A leak
Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room,
immediately provide thorough ventilation.
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9-3. Tools Specifically for R410A
For servicing, use the following tools for R410A
Tool Distinction Tool Name
Gauge manifold
Charging hose
Gas leak detector
Refrigerant cylinder
Charging cylinder
Refrigerant recovery unit
Tools specifically for R410A
Vacuum pump with anti-reverse flow (*1)
(Solenoid valve-installed type, which prevents oil from flowing back into the
unit when the power is off, is recommended.)
Vacuum pump (*2)...can be used if the following adapter is attached.
Vacuum pump adapter (reverse-flow prevention adapter) (*3).
(Solenoid valve-installed adapter attached to a conventional vacuum pump.)
Electronic scale for charging refrigerant
Flare tool
Bender
Tools which can be com-
monly used for R22,
R407C, and R410A
CAUTION
To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, shape and external
diameter of the service port screw has been altered.
<External diameter of service port> R410A : 5/16"
R22, R407C : 1/4"
The above tools specifically for R410A must not be used for R22 and R407C.
Doing so will cause malfunction of the unit.
For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for
R22-type units can be used for R410A-type. However, they must be used
exclusively for R410A and never alternately with R22 and R407C.
Torque wrench
Cutter, reamer
Welding tool, nitrogen gas cylinder
9-4. Tubing Installation Procedures
When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of tubing.
The following is the HAB oil generally used:
Esso: ZERICE S32
NOTE
For details on tubing installation procedures, refer to the installation manuals attached to the indoor
unit and outdoor unit.
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9-5. In Case of Compressor Malfunction
CAUTION
Should the compressor malfunction, be sure to make the switch to a replacement
compressor as quickly as possible.
Use only the tools indicated exclusively for R410A. See "9-3. Tools Specifically
for R410A."
9-5-1. Procedure for Replacing Compressor
(1) Recovering refrigerant
Any remaining refrigerant inside the unit should not be
released to the atmosphere, but recovered using the
refrigerant recovery unit for R410A.
Do not reuse the recovered refrigerant, since it will contain
impurities.
(2) Replacing Compressor
Soon after removing seals of both discharge and suction
tubes of the new compressor, replace it quickly.
(3) Checking for sealing
(1) Recover refrigerant
OK
(2) Replace compressor
OK
Use nitrogen gas for the pressurized gas, and never use a
refrigerant other than R410A. Also do not use oxygen or
any flammable gas.
(4) Evacuation
Use a solenoid valve-installed vacuum pump so that
even if power is cut off in the middle of evacuation of air
due to a power interruption, the valve will prevent the
pump oil from flowing back.
The equipment may be damaged if moisture remains in
the tubing, thus carry out the evacuation thoroughly.
When using a vacuum pump with exhaust air volume more
than 0.883 cu.ft./min. and ultimate vacuum pressure rate
of 50 micron Hg.
Standard time for evacuation
Length of tubing
Evacuation time
Less than 33 ft. (10 m)
More than 10 minutes
(3) Check for sealing
OK
(4) Evacuation
OK
(5) Recharge
More than 33 ft. (10 m)
More than 15 minutes
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(5) Recharging
Configuration and characteristics of cylinders
Be sure to charge the specified amount of
refrigerant in liquid state using the service port
of the wide tube service valve. The proper
amount is listed on the unit's nameplate.
When the entire amount cannot be charged all at
once, charge gradually while operating the unit in
Cooling Operation.
CAUTION
Never charge a large amount
of liquid refrigerant at once to
the unit. This may cause
damage to the compressor.
When charging with a refrigerant cylinder, use an
electronic scale for charging refrigerant. In this
case, if the volume of refrigerant in the cylinder
becomes less than 20% of the fully-charged
amount, the composition of the refrigerant starts
to change. Thus, do not use the refrigerant if
the amount in the charging cylinder is less
than 20%.
Also, charge the minimum necessary amount to
the charging cylinder before using it to charge
the air conditioning unit.
Valve
Liquid
Single valve
Charge liquid refrigerant with
cylinder in up-side-down position.
Fig. 1
Valve
Example:
In case of charging refrigerant to a unit requiring
1.68 lb. (0.76 Kg) using a capacity of a 22 lb. (10
Kg) cylinder, the minimum necessary amount for
the cylinder is:
1.68 + 22 0.20 = 6.08 lb.
(0.76 + 10 0.20 = 2.76 Kg)
For the remaining refrigerant, refer to the
instructions of the refrigerant manufacturer.
If using a charging cylinder, transfer the specified
amount of liquid refrigerant from the refrigerant
cylinder to the charging cylinder.
Prepare an evacuated charging cylinder
beforehand.
CAUTION
To prevent the composition
of R410A from changing,
never bleed the refrigerant
gas into the atmosphere
while transferring the
refrigerant. (Fig. 3)
Charging
cylinder
Open
Liquid
Single valve (with siphon tube)
Charge with cylinder in normal position.
Fig. 2
NO!
Liquid
Refrigerant
cylinder
Do not use the refrigerant if the amount in the
charging cylinder is less than 20%.
Fig. 3
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9-6. In Case Refrigerant is Leaking
CAUTION
Never attempt to charge additional refrigerant when refrigerant has been leaking
from the unit. Follow the procedure described below to locate points of leaks and
carry out repairs, then recharge the refrigerant.
(1) Detecting Leaks
Use the detector for R410A to locate refrigerant leak
points.
(2) Recovering refrigerant
Never release the gas to the atmosphere; recover
residual refrigerant using the refrigerant recovery unit for
R410A, instead.
Do not reuse the recovered refrigerant because its
composition will have been altered.
(3) Welding leaking points
Confirm again that no residual refrigerant exists in the unit
before starting welding.
Weld securely using flux and wax for R410A.
Prevent oxide film from forming inside the tubes utilizing
substitution with nitrogen (N2) in the refrigerant circuit of
the unit. Leave ends of tubes open during welding.
(1) Detect leaks
OK
(2) Recover refrigerant
OK
(3) Weld leaking points
OK
(4) Checking for sealing
Use nitrogen gas for the pressurized gas, and never use
a refrigerant other than R410A. Also do not use oxygen or
any flammable gas.
(5) Evacuation
Use a solenoid valve-installed vacuum pump so that
even if power is cut off in the middle of evacuation of air
due to a power interruption, the valve will prevent the
pump oil from flowing back.
The equipment may be damaged if moisture remains in
the tubing, thus carry out the evacuation thoroughly.
When using a vacuum pump with exhaust air volume
more than 0.883 cu.ft./min. and ultimate vacuum pressure
rate of 50 micron Hg.
Standard time for evacuation
Length of tubing
Evacuation time
(6) Recharging
Less than 33 ft. (10 m)
More than 10 minutes
(4) Check for sealing
OK
(5) Evacuation
OK
(6) Recharge
More than 33 ft. (10 m)
More than 15 minutes
Recharge unit in the same manner explained on the
previous page "(5) Recharging."
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9-7. Charging Additional Refrigerant
9-7-1. When Tubes are Extended
Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came
with the indoor unit. Charge additional refrigerant in liquid state only.
CAUTION
Never charge additional refrigerant if refrigerant is leaking from the unit. Follow
instructions given in "9-6. In Case Refrigerant is Leaking" and completely carry out
repairs. Only then should you recharge the refrigerant.
9-8. Retro-Fitting Existing Systems
9-8-1. Use of Existing Units
Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to
operate improperly and may result in a hazardous condition.
9-8-2. Use of Existing Tubing
If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing. Instead,
completely new tubing must be used.
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APPENDIX A
INSTALLATION INSTRUCTIONS
CLM1972
CLM2472
CLM3172
(II-852-6-4190-214-00-3)
A-1
Page 67
For Outdoor Unit
NOTE
INSTALLATION INSTRUCTIONS
– Inverter Multi Split System Air Conditioner –
This air conditioner uses the new refrigerant R410A.
Refrigerant service valve size = 5/16"
Contents
Page
IMPORTANT!
Please Read Before Starting .................................. 2
1. GENERAL .......................................................... 3
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied with Unit
1-3. Optional Copper Tubing Kit
1-4. Type of Copper Tube and Insulation Material
1-5. Additional Materials Required for Installation
2. INSTALLATION SITE SELECTION ................... 4
2-1. Indoor Unit
2-2. Connecting Indoor Units
2-3. Outdoor Unit
2-4 Baffle Plate for the Outdoor Unit
(CLM models only)
2-5. Outer Dimensions of Outdoor Unit
2-6. Diagram of Outdoor Unit Installation
COOL/DRY Model
Model Combinations
Combine indoor and outdoor units only as listed
below.
Indoor Unit Outdoor Unit
KMS0772 CM1972
KMS0972 CM2472
KMS1272 CM3172
KMS1872 CLM1972
KMS2472 CLM2472
CLM3172
Combine indoor and outdoor units only as listed in
the combination tables for 3-room or 4-room
outdoor unit as shown in its respective manual.
Power Source:
60 Hz, single-phase, 230 / 208 VAC
3. INSTALLATION PROCESS .............................. 15
3-1. Embedding the Tubing and Wiring
3-2. Use of the Flaring Method
3-3. Flaring Procedure with a Flare Tool
3-4. Caution before Connecting Tubes Tightly
3-5. Tubing Connections
3-6. Insulation of Refrigerant Tubing
3-7. Taping the Tubes
3-8. Finishing the Installation
4. AIR PURGING................................................... 18
I Air Purging with a Vacuum Pump (for Test Run)
I Pump Down
5. WIRING INSTRUCTIONS ................................. 21
5-1. General Precautions on Wiring
5-2. Recommended Wire Length and Diameter
5-3. Wiring System Diagram
5-4. How to Connect Wiring to the Terminal
5-5. Wiring Instructions for the Outdoor Unit
6. TEST RUN......................................................... 25
7. CONNECTING A HOME AUTOMATION
DEVICE ............................................................. 26
8. INSTALLATION CHECK SHEET ...................... 26
85264190214003 © SANYO 2007
Be sure to read the yellow instruction sheet
attached to the outdoor unit for models using the
new refrigerant R410A.
Combination example
Indoor unit B
Indoor unit A
Indoor unit C
Outdoor unit
Indoor unit D
NOTE
The illustrations are based on the typical appearance of
a standard model. Consequently, the shape may differ
from that of the air conditioner that you are installing.
SANYO Commercial Solutions In Canada
A Division of SANYO North America Corporation SANYO Canada Inc.
Cornerstone Business Park, 1-300 Applewood Crescent, Concord
1062 Thorndale Avenue, Ontario, L4K 5C7, Canada
Bensenville, IL 60106, U.S.A.
Page 68
IMPORTANT!
Please Read Before Starting
When Installing…
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:
G
Carefully read this instruction booklet before beginning.
G
Follow each installation or repair step exactly as shown.
G
Observe all local, state, and national electrical codes.
G
Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard
or unsafe practice which can
WARNING
CAUTION
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.
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.
SPECIAL PRECAUTIONS
WARNING
• 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.
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 Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM.
…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
• Turn 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
CAUTION
• 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.
• Do not install only a single indoor unit.
2
Page 69
1. General
This booklet briefly outlines where and how to install the
air conditioning system. Please read over the entire set
of instructions for the indoor and outdoor units and make
sure all accessory parts listed are with the system before
beginning. If the electric wiring diagram does not appear
in this manual, please check for the diagram on the
indoor unit.
5. Carpenter’s level
6. Sabre saw or key hole saw
7. Hacksaw
8. Core bits
9. Hammer
10. Drill
11. Tube cutter
12. Tube flaring tool
1-1. Tools Required for Installation (not supplied)
1. Standard screwdriver
2. Phillips head screwdriver
3. Knife or wire stripper
4. Tape measure
13. Torque wrench
14. Adjustable wrench
15. Reamer (for deburring)
16. Vacuum pump (For R410A)
17. Manifold valve
1-2. Accessories Supplied with Unit
Table 1
Parts Figure Q’ty Parts Figure Q’ty Parts Figure Q’ty
1
Reducer
(1/2" 3/8")
Packed in the outdoor unit.
Hex wrench Cushion rubber 4
Labels for inter-unit
cable and tube
ABCD
1
4 each
Reducer
(3/8" 1/2")
1972
2472
3172
1
2
1-3. Optional Copper Tubing Kit
Copper tubing for connecting the outdoor unit to the
indoor unit is available in kits which contain the narrow
and wide tubing, fittings and insulation. Consult your
nearest sales outlet or A/C workshop.
2. Foamed polyethylene insulation for the specified
copper tubes as required to precise length of tubing.
Wall thickness of the insulation should be not less
than 5/16" (8 mm).
3. Use insulated copper wire for field wiring. Wire size
varies with the total length of wiring.
1-4. Type of Copper Tube and Insulation Material
Refer to 5. Wiring Instructions for details.
If you wish to purchase these materials separately from
a local source, you will need:
1. Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2.
Cut each tube to the appropriate lengths 1' to 1'4"
(30 cm to 40 cm) to dampen vibration between units.
Table 2
Model
KMS0772 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)
KMS0972 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)
KMS1272 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)
KMS1872 1/4" (6.35 mm) 0.0314" (0.8 mm) 1/2" (12.70 mm) 0.0314" (0.8 mm)
KMS2472 1/4" (6.35 mm) 0.0314" (0.8 mm) 5/8" (15.88 mm) 0.0393" (1.0 mm)
Outer Dia. Thickness Outer Dia. Thickness
Narrow Tube Wide Tube
CAUTION
Check local electrical codes
and regulations before
obtaining wire. Also, check
any specified instructions or
limitations.
3
Page 70
1-5. Additional Materials Required for Installation
1. Refrigeration (armored) tape
2. Insulated staples or clamps for connecting wire
(See local codes)
3. Putty
4. Refrigeration lubricant
5. Clamps or saddles to secure refrigerant tubing
2. Installation Site Selection
2-1. Indoor Unit
To prevent abnormal heat generation
WARNING
AVOID:
G direct sunlight.
and the possibility of fire, do not
place obstacles, enclosures and
grilles in front of or surrounding the
air conditioner in a way that may
block air flow.
Indoor unit
Drain hose
Outside drainage
Fig. 1
G nearby heat sources that may affect performance of the
unit.
G areas where leakage of flammable gas may be expected.
G placing or allowing any obstructions near the A/C inlet or
outlet.
G installing in rooms that contain instant-on (rapid-start)
fluorescent lamps. (These may prevent the A/C from
receiving signals.)
G places where large amounts of oil mist exist.
G installing in locations where there are devices that
generate high-frequency emissions.
DO:
G select an appropriate position from which every corner of
the room can be uniformly cooled. (High on a wall is best.)
G select a location that will hold the weight of the unit.
G select a location where tubing and drain hose have the
shortest run to the outside. (Fig. 1)
G allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 2)
G install the unit within the maximum elevation difference
(H1, H2, H3, H4) above or below the outdoor unit and
within a total tubing length (L1+L2+L3, L1+L2+L3+L4)
from the outdoor unit as detailed in Table 3 and Fig. 3a.
2" (5 cm)
min.
Front View
Fig. 2
INDOOR
UNIT (1)
Elevation
difference (H1)
H4
INDOOR
UNIT (4)
Tubing length (L1)
OUTDOOR
UNIT
L4
Fig. 3a
CAUTION
For stable operation of the
air conditioner, do not
install wall-mounted type
indoor units less than 5'
(1.5 m) from floor level.
6" (15 cm)
min.
INDOOR
UNIT (2)
L2
L3
INDOOR
UNIT (3)
Indoor unit
Minimum height
from floor level
5' (1.5 m)
2" (5 cm)
min.
H2
H3
Wall
Floor level
Fig. 3b
4
Page 71
G Install the indoor unit more than 3.3' (1 m) away from any
antenna or power lines or connecting wires used for television, radio, telephone, security system, or intercom.
Electrical noise from any of these sources may affect
operation.
G install in a sturdy manner to avoid increased operating
noise.
Table 3
Max. Max. Allowable Total Limit of Limit of Elevation Required Amount
Model Tubing Length at shipment (L1+L2+L3) or (H1, H2, H3, H4) Refrigerant
CM1972/CLM1972 82 150 (L1+L2+L3) 150 (L1+L2+L3) 50 —
CM2472/CLM2472 82 150 (L1+L2+L3+L4) 200 (L1+L2+L3+L4) 50 0.22
CM3172/CLM3172 100 150 (L1+L2+L3+L4) 230 (L1+L2+L3+L4) 50 0.22
* If total tubing length becomes 150 to 200 ft. (Max.) or 150 to 230 ft. (Max.), charge additional refrigerant (R410A) by 0.22 oz./ft.
No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.
Allowable Tubing Length Total Tubing Length Difference of Additional
per unit (L1+L2+L3) or (L1+L2+L3+L4) (ft.) (oz./ft.)*
(ft.) (L1+L2+L3+L4) (ft.)
(ft.)
5
Page 72
2-2. Connecting Indoor Units
(1) Connecting indoor unit for CM1972/CLM1972
(A)
3/8"(9.52mm)
3/8"(9.52mm)
3/8"(9.52
(B)
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
Flare 3/8"(9.52
Outdoor unit Indoor unit
C
1/4"(6.35mm)
B
1/4"(6.35
A
mm
)
1/4"(6.35
mm
mm
)
)
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
mm
mm
)
)
Fig. 4a
Outdoor unit Indoor unit
C
1/4"(6.35mm)
B
mm
)
A
mm
)
Union 1/2"(12.70mm)
mm
)
A joint for connecting tubes of
different sizes
(3/8"(9.52mm) 1/2"(12.70mm)) Supplied Reducer
1/4"(6.35
1/4"(6.35
mm
mm
)
)
3/8"(9.52mm)
3/8"(9.52
1/2"(12.70
mm
mm
)
)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(2) Connecting indoor unit for CM2472/CLM2472
(A)
Outdoor unit Indoor unit
D
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
1/2"(12.70mm)
mm
mm
(1/2"(12.70mm) 3/8"(9.52mm)) Supplied Reducer
C
)
B
)
A
Union 3/8"(9.52mm)Flare 1/2"(12.70mm)
1/4"(6.35
1/4"(6.35
1/4"(6.35
1/4"(6.35mm)
mm
mm
mm
)
)
)
Fig. 4b
3/8"(9.52
3/8"(9.52
3/8"(9.52
3/8"(9.52
Fig. 4c
mm
mm
mm
mm
)
(KMS0772,KMS0972,KMS1272)
)
(KMS0772,KMS0972,KMS1272)
)
(KMS0772,KMS0972,KMS1272)
)
(KMS0772,KMS0972,KMS1272)
6
Page 73
(B)
3/8"(9.52
3/8"(9.52mm)
3/8"(9.52
1/2"(12.70
mm
mm
mm
(C)
3/8"(9.52mm)
3/8"(9.52mm)
3/8"(9.52
1/2"(12.70mm)
mm
(1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased
Outdoor unit Indoor unit
D
)
C
B
)
A
)
1/4"(6.35
1/4"(6.35
1/4"(6.35
1/4"(6.35
mm
mm
mm
mm
)
)
)
)
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
1/2"(12.70
mm
mm
mm
)
)
)
Fig. 4d
Outdoor unit Indoor unit
D
1/4"(6.35
C
1/4"(6.35
B
)
A
Union 5/8"(15.88mm)Flare 1/2"(12.70mm)
1/4"(6.35
1/4"(6.35mm)
mm
mm
mm
)
)
)
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
5/8"(15.88mm)
mm
mm
)
)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS2472)
(D)
3/8"(9.52
3/8"(9.52
3/8"(9.52
1/2"(12.70mm)
mm
mm
mm
(1/2"(12.70
Locally purchased
Fig. 4e
Outdoor unit Indoor unit
D
)
C
)
B
)
A
Union 5/8"(15.88mm)Flare 1/2"(12.70mm)
mm
) 5/8"(15.88mm))
1/4"(6.35
1/4"(6.35
1/4"(6.35
mm
mm
1/4"(6.35
mm
)
)
)
3/8"(9.52mm)
mm
3/8"(9.52
1/2"(12.70
mm
(3/8"(9.52
Locally purchased
)
mm
)
)
5/8"(15.88mm)
mm
Union 1/2"(12.70mm)Flare 3/8"(9.52mm)
) 1/2"(12.70mm))
Fig. 4f
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(KMS2472)
7
Page 74
(3) Connecting indoor unit for CM3172/CLM3172
(A)
3/8"(9.52mm)
3/8"(9.52mm)
1/2"(12.70mm)
1/2"(12.70
(B)
3/8"(9.52mm)
3/8"(9.52mm)
1/2"(12.70mm)
1/2"(12.70
Outdoor unit Indoor unit
D
1/4"(6.35
C
1/4"(6.35
B
1/4"(6.35
A
mm
)
Union 3/8"(9.52mm)Flare 1/2"(12.70mm)
(1/2"(12.70mm) 3/8"(9.52mm)) Supplied Reducer
mm
)
mm
)
mm
)
1/4"(6.35
3/8"(9.52mm)
mm
mm
mm
)
3/8"(9.52
3/8"(9.52
3/8"(9.52mm)
)
)
Fig. 4g
Outdoor unit Indoor unit
D
1/4"(6.35
C
1/4"(6.35
B
1/4"(6.35
A
mm
)
Union 3/8"(9.52mm)Flare 1/2"(12.70mm)
(1/2"(12.70mm 3/8"(9.52mm)) Supplied Reducer
mm
mm
mm
1/4"(6.35
)
)
)
mm
3/8"(9.52mm)
3/8"(9.52
3/8"(9.52
1/2"(12.70
)
mm
mm
mm
)
)
)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(C)
Outdoor unit Indoor unit
D
3/8"(9.52mm)
C
3/8"(9.52
1/2"(12.70
1/2"(12.70
mm
mm
mm
)
B
)
A
)
1/4"(6.35
1/4"(6.35
1/4"(6.35mm)
1/4"(6.35
mm
mm
mm
)
)
)
Fig. 4h
3/8"(9.52
3/8"(9.52
1/2"(12.70mm)
1/2"(12.70mm)
mm
mm
Fig. 4i
8
)
(KMS0772,KMS0972,KMS1272)
)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(KMS1872)
Page 75
(D)
3/8"(9.52
3/8"(9.52mm)
1/2"(12.70mm)
1/2"(12.70
(E)
3/8"(9.52
3/8"(9.52
1/2"(12.70mm)
1/2"(12.70
Outdoor unit Indoor unit
D
mm
)
C
B
A
mm
)
Union 5/8"(15.88mm)Flare 1/2"(12.70mm)
(1/2"(12.70mm) 5/8"(15.88mm))
Locally purchased
1/4"(6.35
1/4"(6.35
1/4"(6.35
mm
mm
1/4"(6.35mm)
mm
)
3/8"(9.52mm)
)
3/8"(9.52
)
3/8"(9.52
(1/2"(12.70mm) 3/8"(9.52mm))
Supplied Reducer
mm
mm
5/8"(15.88
)
)
mm
Fig. 4j
Outdoor unit Indoor unit
D
mm
mm
mm
)
C
)
B
A
)
1/4"(6.35
1/4"(6.35
1/4"(6.35mm)
(1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased
mm
mm
Union 5/8"(15.88mm)Flare 1/2"(12.70mm)
)
)
1/4"(6.35
3/8"(9.52
3/8"(9.52
1/2"(12.70mm)
5/8"(15.88
mm
mm
)
mm
)
mm
)
)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
)
(KMS2472)
Union 3/8"(9.52mm)Flare 1/2"(12.70mm)
(KMS0772,KMS0972,KMS1272)
(KMS0772,KMS0972,KMS1272)
(KMS1872)
(KMS2472)
Fig. 4k
9
Page 76
2-3. Outdoor Unit
NOTE
AVOID:
G heat sources, exhaust fans, etc. (Fig. 5a)
G damp, humid or uneven locations.
DO:
G choose a place as cool as possible.
G choose a place that is well ventilated.
G allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 5b)
G provide a solid base (level concrete pad, concrete block,
6" × 1'4" (15 × 40 cm) beams or equal), a minimum of 6"
(15 cm) above ground level to reduce humidity and
protect the unit against possible water damage and
decreased service life. (Figs. 5c and 5d)
CAUTION
A solid base must not cover
the hole of the bottom plate.
G Install cushion rubber under unit’s feet to reduce vibration
and noise. (Fig. 5e)
G use lug bolts or equal to bolt down unit, reducing vibration
and noise.
G Install in a location where no antenna of a television or
radio exists within 10' (3 m).
NO
Hot air
Outdoor unit
Fig. 5a
Air intake Min. 6" (15 cm)
Min.
4" (10 cm)
Air intake
Air discharge
Exhaust fan
Heat source
Valve
side
Min. 10"
(25 cm)
Min.
1’8" (50 cm)
Fig. 5b
Fig. 5c
Obstacle above
Min.
7' (2 m)
Air discharge
Ground
Min. 6" (15 cm)
Air intake
Drain holes
Anchor bolts
(4 pcs.)
Min. 6" (15 cm)
Min.
7' (2 m)
Obstacle
2-4. Baffle Plate for the Outdoor Unit
(CLM models only)
It is recommended to use baffle plates for models
CLM1972, CLM2472 and CLM3172. The baffle plates are
not normally required for the other models.
When the outdoor unit is installed in a position exposed to
strong wind (such as seasonal winds with low air temperature in winter), baffle plates must be installed on the outdoor
unit. (Fig. 5f)
This unit is designed so that the fan of the outdoor unit runs
at low speed when the air conditioner is operated at low
outdoor air temperatures. When the outdoor unit is exposed
to strong wind, the system pressure drops because of the
freeze protector.
Install a pair of windbaffle plates at the front and back of the
outdoor unit if it will be subject to strong wind during the
winter. (Figs. 5f, 5g, 5h, 5i, and 5j)
Concrete
or equal
Back
About 16" (40 c
Air intake baffle
Wind
m)
About 6" (15 cm)
Fig. 5d
Cushion rubber
Fig. 5e
Front
Wind
10
Air discharge baffle
No air intake baffle required on this side.
Fig. 5f
Page 77
(1) Recommended dimensions of the baffle plates
Air Intake Baffle
C
E
D
F
B
G
A
3- 1/4"
(3- 6.5 mm)
Fig. 5g
2- 15/64"
(2- 6 mm)
R
Q
H
Air Discharge Baffle
O
I
B
G
G
H
4- 1/4"
(4- 6.5 mm)
J
L
I
K
E
A
F
D
Fig. 5h
J
C
K
For Air Intake
Model
CLM1972,
CLM2472
CLM3172
Dimensions
(inch)
(mm) 640 20 50 635 270 270 10 20 15 657 7.5 10 150 20 20
(inch)
(mm) 640 20 35 785 350 350 10 20 15 807 7.5 10 150 20 20
ABCDEFGH I JK LOQR
25-3/16 25/32 1-31/32 25 10-5/8 10-5/8 25/64 25/32 19/32 25-7/8 19/64 25/64 5-29/32 25/32 25/32
25-3/16 25/32 1-3/8
30-29/32 13-25/32 13-25/32
25/64 25/32 19/32
For Air Discharge
Dimensions
Model
CLM1972, 2472,
3172
(inch)
(mm) 560 585 350 150 490 35 55 465 60 85 25
ABCDEFGH I JK
22-1/16 23-1/32 13-25/32 5-29/32 19-9/32 1-3/8 2-5/32 18-5/16 2-3/8 3-11/32 31/32
Material to be used: Metal plate with corrosion protection treatment
Plate thickness: 0.0394 to 0.0472" (1.0 to 1.2 mm)
(2) Parts required (field supply except for screws)
Air Intake Baffle
Item Q’ty Remarks
Baffle plate 1
Screw 5/32 × 15/32" (4 × 12 mm) tapping 2 Attached to outdoor unit
Bolt 15/64 × 19/32 – 25/32" (M6 × 15 – 20 mm) 3
Nut 15/64" (M6) 3
Washer 3
Spring washer 3
31-25/32
19/64 25/64 5-29/32 25/32 25/32
Air Discharge Baffle
Item Q’ty Remarks
Baffle plate 1
Bolt 15/64 × 13/32 – 19/32" (M6 × 10 – 15 mm) 4
Nut 15/64" (M6) 4
Washer 4
Spring washer 4
11
Page 78
(3) Installation procedure
Panel side R
Panel top
Panel front
Panel side L
1. Air Intake Baffle
(1) Left side
1. Remove the top panel from the unit.
2. Remove the panel side L, and drill 3 holes of ø1/4 inch
(6.5 mm) at the prescribed position.
3. Install the windbaffle on the unit using field supply bolts
and nuts.
4. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts is
between 19/32 – 25/32 inch (15 – 20 mm).
5. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
(2) Right side
1. Remove the top panel from the unit.
2. Use 2 preholes on the panel side R to install the baffle
plate.
3. Remove the panel side R from the unit by removing the
screws. These screws are used in step 4 below.
4. Put (sandwich) the windbaffle between the unit and the
panel side R, then install the windbaffle on the unit using
the above screws. Be careful not to damage the screw
holes.
2. Air Discharge Baffle
1. Remove the panels front, top, side L and R from the
unit and drill 4 holes of ø1/4 inch (6.5 mm) at the
prescribed positions.
2. Install the windbaffle on the unit using field supply
bolts and nuts.
3. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts
is between 13/32 – 19/32 inch (10 – 15 mm).
4. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
Panel side R
Panel top
Panel front
Panel side L
Fig. 5i Fig. 5j
NOTE
G In order to prevent contact of the bolts and heat exchanger and other parts inside the unit, install the windbaffle using
bolts from inside the unit and fasten the bolts with nuts from outside the unit.
G When the windbaffle is installed on the unit, the unit has higher wind resistance. In order to prevent the unit from
falling over, anchor the legs of the unit using anchor bolts (or similar method).
(4) Precautions for installation
1. Be sure not to damage painted surfaces.
2. Finish the edges of the windbaffle to avoid cuts or injury.
3. Drilling of holes must be carefully done so that no damage is caused to external or internal parts of the unit.
Particular care must be taken that drill chips do not drop into the unit.
12
Page 79
2-5. Outer Dimensions of Outdoor Unit
(1) CM1972/CLM1972
23-15/16
(2) CM2472/CLM2472
23-15/16
5-11/32
15/32
A
5-11/32
15/32
A
A
35-7/16 (900)
13-19/32
12-19/32
14-17/32
2-29/32
23/32
1-13/16
2-1/16
29-1/8 (740)
Service valve on narrow tube side
(Outer diameter 1/4"(
Service valve on wide tube side
(Outer diameter 3/8"(
2-3/4
2-3/4
2-27/32
4-1/2
2-1/32
5-29/32
2-15/16
4-7/16
6.35
9.52
))
))
Fig. 6a
A
35-7/16 (900)
12-19/32
13-19/32
14-17/32
2-29/32
29-1/8 (740)
Service valve on narrow tube side
(Outer diameter 1/4"(
Service valve on wide tube side
(Outer diameter 3/8"(
2-3/4
2-3/4
6.35
9.52
))
))
(3) CM3172/CLM3172
23-15/16
5-11/32
15/32
A
2-15/16
4-7/16
Service valve on wide tube side
(Outer diameter 1/2"(
12.70
))
23/32
1-13/16
2-1/16
2-13/32
2-27/32
2-1/32
5-29/32
4-1/2
Fig. 6b
A
35-7/16 (900)
12-19/32
13-19/32
14-17/32
2-29/32
23/32
1-13/16
2-1/16
2-13/32
35-1/32 (890)
Service valve on narrow tube side
(Outer diameter 1/4"(
Service valve on wide tube side
(Outer diameter 3/8"(
2-3/4
2-3/4
2-27/32
2-15/16
5-29/32
2-1/32
4-1/2
4-7/16
Service valve on wide tube side
(Outer diameter 1/2"(
6.35
9.52
12.70
))
))
))
Fig. 6c
13
unit: inch (mm)
Page 80
2-6. Diagram of Outdoor Unit Installation
Never install only a single indoor unit.
Be sure to connect indoor and outdoor units only in
combinations that are listed in the catalog or in the
combination table that was provided with the outdoor unit.
(Use caution. Connecting any other model may result in
operation failure and malfunction.)
Indoor unit D
Over 4"(10cm)
Ensure 6"(15cm)
of space if a
drain hose is to
be us
ed.
Over 1'8"(50cm)
The dimensions indicated by in the figure below are
spaces that are required in order to maintain
performance. Install in a location where the dimensions
indicated by are ensured, and where 2 or more faces
of the unit are unobstructed. In principle, the top direction
should be unobstructed.
Over 8"(20cm)
Power breaker
D
C
B
A
Indoor unit C
Indoor unit B
Indoor unit A
Service space
Over 10"(25cm)
Access panel C
Base (not provided)
(concrete or similar material)
Fasten with anchor bolts
(not provided)
(3/8" or M10, 4 locations)
Ground
wire
(not
provided)
Fig. 7
14
Page 81
3. Installation Process
3-1. Embedding the Tubing and Wiring
G Do not connect tubes to locations that are embedded.
G Be sure to bind refrigerant tubing and inter-unit cables
together with vinyl tape.
G The power cable must be obtained on-site.
(#12: Less than 85 ft.)
# ... AWG (American Wire Gauge)
G Be sure to apply the provided labels to both ends of
the inter-unit cables to prevent miswiring.
G Securely seal the end of embedded tubing with vinyl
tape in order to prevent dirt or moisture entry.
G In order to prevent insulation breakdown and ground
faults, do not allow the wire ends to contact rainwater,
or be subject to dew condensation.
3-2. Use of the Flaring Method
Many of the conventional split system air conditioners
employ the flaring method to connect refrigerant tubes
which run between indoor and outdoor units. In this
method, the copper tubes are flared at each end and
connected with flare nuts.
Before
Deburring
After
3-3. Flaring Procedure with a Flare Tool
(1) Cut the copper tube to the required length with a
tube cutter. It is recommended to cut approx. 12" to
20" (30 to 50 cm) longer than the tubing length you
estimate.
(2) Remove burrs at the end of the copper tube with a
tube reamer or file. This process is important and
should be done carefully to make a good flare.
(Fig. 8)
Fig. 8
15
Page 82
NOTE
Flare nut
Union
Apply the provided labels
to the indoor and outdoor
unit tubing connectors to
prevent errors in
connections.
Service valve on
narrow tube side
Service valve on
wide tube side
A
B
C
D
When reaming, hold the tube end downward and be sure that
no copper scraps fall into the tube. (Fig. 9)
Copper
tubing
(3) Remove the flare nut from the unit and be sure to mount
it on the copper tube.
(4) Make a flare at the end of copper tube with a flare tool.*
(Figs. 10 and 11)
(*Use “RIGID” or equivalent.)
NOTE
A good flare should have the following characteristics:
G inside surface is glossy and smooth.
G edge is smooth.
G tapered sides are of uniform length.
3-4. Caution before Connecting Tubes Tightly
a) Be sure to apply a sealing cap or water-proof tape to
prevent dust or water from getting into the tubes before
they are used.
b) Be sure to apply refrigerant lubricant to the matching
surfaces of the flare and union before connecting them
together. This is effective for reducing gas leaks.
(Fig. 12)
If the special R410A
flare tool is used:
0 to 0.0196"
(0 to 0.5 mm)
Reamer
Fig. 9
If the previous flare tool
(clutch-type) is used:
0.0472" (1.2 mm)
Adjust so that the amount of tube
protrusion is as shown in the figure.
Fig. 10
Flare nut
Copper
tubing
Flare tool
Fig. 11
c) For proper connection, align the union tube and flare
tube straight with each other, then screw in the flare nut
lightly at first to obtain a smooth match. (Fig. 13)
3-5. Tubing Connections
a) Temporary connection:
Screw in 3 – 5 rotations by hand. (Fig.14)
b) To fasten the flare nuts, apply specified torque as:
Table 4
Tube Dia. Tightening Torque
1/4" (6.35 mm) Approx. 120 – 160 lbs·in (140 – 180 kgf·cm)
3/8" (9.52 mm) Approx. 300 – 360 lbs·in (340 – 420 kgf·cm)
1/2" (12.70 mm) Approx. 430 – 540 lbs·in (490 – 610 kgf·cm)
5/8" (15.88 mm) Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)
16
Fig. 14
Apply refrigerant
lubricant here and here
Fig. 12
Fig. 13
Page 83
NOTE
IMPORTANT
Clamp
Insulated tubes
CAUTION
Be sure to match refrigerant
tubing and electric wiring
between indoor and outdoor
units. For more details, refer to
“Tubing Check Control” in the
Technical & Service Manual.
3-6. Insulation of Refrigerant Tubing
Indoor unit
Torque wrench
Spanner
Outdoor unit
Fig. 15
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 minimum 5/16"
(8 mm). (Fig. 17)
3-7. Taping the Tubes
CAUTION
After a tube has been insulated,
never try to bend it into a
narrow curve, as this may
cause the tube to break or
crack.
(1) At this time, the 2 refrigerant tubes (and electrical wire
if local codes permit) should be taped together with
armoring tape. The drain hose may also be included
and taped together as 1 bundle with the tubing.
(2) Wrap the armoring tape from the bottom of the outdoor
unit to the top of the tubing where it enters the wall. As
you wrap the tubing, overlap half of each previous tape
turn. (Fig. 18)
Min.
5/16"
(8 mm)
Insulation
Fig. 16
Insulation
Thickness:
min. 5/16"
(8 mm)
Fig. 17
(3) Clamp the tubing bundle to wall, using 1 clamp approx.
every 47" (120 cm).
Do not wind the armoring tape too tightly, since this will
decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips
clear of the unit and the tubing.
3-8. Finishing the Installation
After finishing insulating and taping over the tubing, use
sealing putty to seal off the hole in the wall to prevent rain
and draft from entering. (Fig. 19)
Fig. 18
Apply putty here
Tubing
Fig. 19
17
Page 84
4. Air Purging
Air and moisture remaining in the refrigerant
system have undesirable effects as indicated
below. Therefore, they must be purged completely.
G pressure in the system rises
G operating current rises
G cooling efficiency drops
G moisture in the air may freeze and block
capillary tubing
G water may lead to corrosion of parts in the
refrigerant system
I
Air Purging with a Vacuum Pump
(for Test Run)
G In order to protect the earth’s environment, be sure to use
a vacuum pump to perform the air purge.
(Never perform an air purge by using the refrigerant gas
cylinder or other external gas, or by using the gas inside
the outdoor unit.)
Service
valve on
narrow
Service
valve on
wide tube
side
With push-pin
D
C
B
A
Hex wrench
Low-pressure
valve
Leave the
valve open.
Open
Charging hose
(special for R410A)
Fig. 20
Manifold gauge
(special for R410A)
High-pressure valve
Vacuum pump
adapter
HiLo
(for preventing
reverse flow)
(special for
R410A)
Vacuum
pump
CAUTION
In order to prevent charging errors with
A/C that uses R410A, the screw diameter
at the service valve charging port has
been changed. When recharging or performing other servicing, use the special
charging hose and manifold gauge.
Perform the air purge for tubes A, B, C, and D. Use the
same procedures for all tubes.
(1) Check that each tube (both narrow and wide tubes)
between the indoor and outdoor units have been
properly connected and all wiring for the test run has
been completed. Note that both narrow and wide tube
service valves on the outdoor unit are kept closed at
this stage.
(2) Using an adjustable wrench or box wrench, remove
the valve caps from the service valve on both narrow
and wide tubes.
(3) Connect a vacuum pump and a manifold valve (with
pressure gauges) to the service port on the wide tube
service valve. (Fig. 20).
CAUTION
Before using the vacuum pump
adapter, read the vacuum pump
adapter manual, and use the
adapter correctly.
CAUTION
Be sure to use a manifold valve for
air purging. If it is not available,
use a stop valve for this purpose.
The “Hi” knob of the manifold
valve must always be kept closed.
Stopper
Spindle
Service port
Screw diameter: 1/2
UNF 20 threads
Valve core
Cap nut tightening torque:
60 – 95 lbs·in
(70 – 110 kgf·cm)
(Tighten by hand, then use a
wrench to turn approximately 30 .)
<Structure of service valve on wide tube side>
Cap tightening torque:
170 – 215 lbs·in
(200 – 250 kgf·cm)
(Tighten by hand, then
use a wrench to turn.)
NOTE
External diameter of service port
R410A: 5/16"
Fig. 21
G When using a hex wrench to open the spindle, an
extremely small amount of refrigerant may leak.
This does not indicate a problem.
G Use a hex wrench of a type to which force can be
easily applied.
18
Page 85
(4) With the “Lo” knob of the manifold valve open and
high-pressure valve (“Hi”) closed completely, run
the vacuum pump. Run the pump until the pressure is –101 kPa (–76 cmHg). The operation time
for the vacuum pump varies with tubing length and
the capacity of the pump. The following table
shows the amount of time required for evacuation:
Table 5
Required time for evacuation when capacity
of 100 liter/h vacuum pump is used
20 min. or more
NOTE
The required time in the above table is calculated
based on the assumption that the ideal (or target)
vacuum condition is around 10 mmHg abs.
(5) With the vacuum pump still running, close the “Lo”
knob of the manifold valve. Then stop the vacuum
pump. Fully close the low-pressure valve and stop
the vacuum pump. (Wait 1 – 2 minutes and check
that the manifold gauge pointer does not return. If
it does return, find and repair the leak, then apply
the vacuum again.)
(6) With a hex wrench, turn the valve stem on the nar-
row tube service valve counter-clockwise by 90
degrees (1/4 turn) for 10 seconds, and then turn
the stem clockwise to close it again.
CAUTION
Be sure to completely insert
the hex wrench before
attempting to turn the valve.
(7) With a standard screwdriver, turn the wide tube
service valve stem counterclockwise to fully open
the valve.
(8) Turn the narrow tube service valve stem counter-
clockwise to fully open the valve.
(9) Loosen the vacuum hose connected to the wide
tube service port slightly to release the pressure.
Then, remove the hose.
(10) Leak test all joints at the tubing (both indoor and
outdoors) with liquid soap. Bubbles indicate a leak.
Be sure to wipe off the soap with a clean cloth.
CAUTION
If a CFC gas detector is used,
use a special detector for HFC
refrigerant (such as R410 and
R134a).
19
Page 86
(11) Replace the flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or
box wrench. Next, mount the valve cap and tighten it with a torque wrench (the cap needs to be tightened with the
torque of 180 lbs·in (200 kgf·cm)). This process is very important to prevent gas from leaking from the system.
(12) Test run the air conditioner. (See page 25.)
(13) While the air conditioner is running, apply liquid soap to check for any gas leaks around the service valves or caps.
(14) If there is no leakage, stop the air conditioner.
(15) Wipe off the soap on the tubing.
This completes air purging with a vacuum pump and the air conditioner is ready for actual operation.
I Pump Down
In order to protect the earth’s environment, be sure to perform pump-down to recover refrigerant
gas without releasing it into the atmosphere.
G When relocating or disposing of the A/C, request this service from
the dealer where the unit was purchased, or from an appropriate
agent. Perform pump-down as described below.
What is pump-down?
G Pump-down refers to recovering the refrigerant gas from the refrig-
erant cycle at the outdoor unit. This work must be performed during cooling operation. The refrigerant gas cannot be recovered
during heating operation.
G During winter, or if the temperature sensor prevents cooling opera-
tion, perform “forced cooling operation.”
Pump-down procedure
(1) Fully close the spindles at the valves on the narrow tube side of
tubes A, B, C and D. (Refer to Fig. 22.)
(2) Connect the manifold gauge to the charging port at the valve on
the wide tube side of tube D. Purge the air from the charging hose.
(Refer to Fig. 23.)
(3) Perform cooling operation or forced cooling
operation.
When the pressure at the low-pressure side is 0.15 – 0.2 MPa
(0.5 – 1 kg/cm
2
G), fully close the spindles at the valves on the
wide tube side of tubes A, B, C, and D, and immediately stop
operation. (Refer to Fig. 23.)
In the winter, the outdoor unit may stop after 5 - 10 minutes of
operation. This is in order to protect the indoor unit heat
exchanger from freezing and does not indicate a problem.
(4) Disconnect the manifold gauge and the inter-unit tubes, and
attach the caps and flare nuts. At this point, pump-down is completed. (If the caps and flare nuts are not reattached, there is the
danger of gas leakage.) (Refer to Fig. 24.)
Narrow tube side
Charging port
Wide tube side
Cap
Cap
Cap
Close
D
Close
C
Close
B
Close
A
Fig. 22
D
C
B
A
Manifold gauge
Fig. 23
After disconnecting
the inter-unit tubes,
attach the flare nuts
with flare bonnets.
If pump-down is not possible
If the A/C cannot be operated because of a malfunction or other
cause, use a refrigerant recovery device to recover the refrigerant.
Cap
Fig. 24
20
Page 87
5. Wiring Instructions
5-1. General Precautions on Wiring
(1) Before wiring, confirm the rated voltage of the unit as
shown on its nameplate, then carry out the wiring
closely following the wiring diagram.
(2) Provide a power outlet to be used exclusively for each
unit, with a power supply disconnect and circuit breaker for overcurrent protection provided in the exclusive
line.
(3) To prevent possible hazard due to insulation failure,
the unit must be grounded.
(4) Each wiring connection must be done tightly and in
accordance with the wiring system diagram. Wrong
wiring may cause the unit to misoperate or become
damaged.
(5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
(6) Unauthorized changes in the internal wiring can be
very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that
occurs as a result of such unauthorized changes.
5-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality.
For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation.
Table 6 shows maximum wire lengths for control line and
power line and fuse or circuit capacity.
NOTE
Refer to the wiring system diagram (Fig. 25a or 25b) for the
meaning of (A), (B), and (C) in Table 6.
Refer to your local codes or in the absence of local codes
see the National Electric Code: ANSI/NFPA70.
Table 6
AWG
Model
CM1972 / CLM1972 85 (Max.) 82 (Max.) 20 A
CM2472 / CLM2472 85 (Max.) 82 (Max.) 20 A
CM3172 / CLM3172 85 (Max.) 100 (Max.) 20 A
Max. Power Line Length (ft.)
(A)
(#12) (#14)
Max. Control Line Length (ft.)
(B) (C)
# ... AWG (American Wire Gauge)
Fuse
or
Circuit Capasity
21
Page 88
WARNING
WARNING
G Be sure to comply with local codes on running the
wire from the indoor unit to the outdoor unit (size
of wire and wiring method, etc.).
G Each wire must be firmly connected.
G No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
G Be sure to connect power wires correctly match-
ing up numbers on terminals of the outdoor unit
and respective indoor units A – D.
CAUTION
G Be sure to connect the power supply line to the
outdoor unit as shown in the wiring diagram. The
indoor unit draws its power from the outdoor unit.
G Do not run wiring for antenna, signal, or power
lines of television, radio, stereo, telephone, security system, or intercom any closer than 3'4" (1 m)
from the power cable and wires between the
indoor and outdoor units. Electrical noise may
affect the operation.
5-3. Wiring System Diagram
G To avoid the risk of electric shock, each air
conditioner unit must be grounded.
G For the installation of a grounding device, please
observe local electrical codes.
G Grounding is necessary, especially for units using
inverter circuits, in order to release charged
electricity and electrical noise caused by high
tension. Otherwise, electrical shock may occur.
G Place a dedicated ground more than 7' (2 m) away
from other grounds and do not have it shared with
other electric appliances.
NOTE
*
Disconnect switch may be required by national
or local codes.
CAUTION
Always comply with national and local code
requirements.
(A)
INDOOR UNIT
*
(B)
INDOOR UNIT
*
(C)
INDOOR UNIT
3 indoor units with CM1972/CLM1972
Disconnect
*
switch
Field supply
1
2
3
Terminal
Disconnect
switch
1
2
3
TerminalTerminal
Disconnect
switch
1
2
3
(C)
Grounding
line
Field supply
230/208V
230/208V
230/208V
Field supply
(C)
Grounding
line
230/208V
230/208V
230/208V
(C)
Grounding
(B)
230/208V
(B)
(B)
(B)
line
230/208V
230/208V
(B)
(B)
OUTDOOR UNIT
1
2
3
4
5
6
7
8
9
(2P)
)
1
2
Te r mi n a l(9P
Terminal
Fig. 25a
UNIT A
UNIT B
UNIT C
(A)
Power supply
Single-phase 230/208VAC 60HZ
L1
L2
Grounding line
4 indoor units with CM2472/CLM2472, CM3172/CLM3172
Disconnect
*
switch
Field supply
(A)
INDOOR UNIT
(B)
INDOOR UNIT
(C)
INDOOR UNIT
(D)
INDOOR UNIT
1
2
3
Terminal
1
2
3
Terminal
1
2
3
Terminal
Disconnect switch
*
1
2
3
Terminal
(C)
Grounding line
Disconnect
*
switch
Field supply
(C)
Grounding line
Disconnect switch
*
(Inter-unit)
power line
230/208V
230/208V
230/208V
Grounding
line
Field supply
(C)
Grounding
line
230/208V
230/208V
230/208V
230/208V
230/208V
230/208V
Field supply
(C)
230/208V
230/208V
230/208V
OUTDOOR UNIT
Terminal(12P
(B)
(B)
(B)
(B)
(B)
(B)
(B)
(B)
1
2
3
4
5
6
7
8
9
10
11
12
)
2P
(
Terminal
)
UNIT A
UNIT B
UNIT C
Power supply
Single-phase 230/208VAC 60HZ
UNIT D
L1
L2
1
2
(A)
Grounding line
Fig. 25b
22
Page 89
Screw and
special washer
Ring
connector
Wire
5-4. How to Connect Wiring to the Terminal
WARNING
Loose wiring may cause the
terminal to overheat or result
in unit malfunction. A fire
hazard may also exist. Therefore, be sure all wiring is
tightly connected.
When connecting each power wire to the corresponding
terminal, follow the instructions “How to connect wiring
to the terminal” and fasten the wire securely tight with
the fixing screw of the terminal plate.
How to connect wiring to the terminal
a) For Indoor Unit
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the wire about 9/32" (7 mm).
See the label (Fig. 26) near the terminal plate.
(2) Using a screwdriver, loosen the terminal screw on
the terminal plate.
(3) Insert the wire and tighten the terminal screw com-
pletely using a screwdriver.
b) For Outdoor Unit
I For solid core wiring (or F-cable)
9/32"
STRIP
SIZE
(7 mm)
Fig. 26
Solid wire
Strip 15/16" (25 mm)
Insulation
Fig. 27
Stranded wire
(ACTUAL
SIZE)
Loop
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the solid wire about 15/16" (25
mm). (Fig. 27)
(2) Using a screwdriver, remove the terminal screw(s)
on the terminal plate.
(3) Using the pliers, bend the solid wire to form a loop
suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the termi-
nal plate and fix it securely with the removed terminal screw using a screwdriver.
I For stranded wiring
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the stranded wiring about 3/8"
(10 mm) and tightly twist the wire ends. (Figs. 28
and 29)
(2) Using a screwdriver, remove the terminal screw(s)
on the terminal plate.
(3) Using a ring connector fastener or pliers, securely
clamp each stripped wire end with a ring connector.
(Fig. 28)
Wire
Special
washer
Ring
connector
Strip 3/8" (10 mm)
Fig. 28
Twist wire ends
Fig. 29
Screw
Ring connector
Te r mi nal plate
(4) Place the ring connector wire, and replace and
tighten the removed terminal screw using a screwdriver. (Fig. 30)
Fig. 30
23
Page 90
5-5. Wiring Instructions for the Outdoor Unit
CAUTION
G Be sure to correctly align inter-unit cables A, B, C and D.
Outdoor unit A
Te r mi nal board
1 2
Indoor unit A
A is the indoor unit with
refrigerant tubing that is
connected to service valve
A (top) of the outdoor unit.
Indoor unit B
B is the indoor unit with
refrigerant tubing that is
connected to service valve
B (top) of the outdoor unit.
Indoor unit C
C is the indoor unit with
refrigerant tubing that is
connected to service valve
C (top) of the outdoor unit.
Indoor unit D
D is the indoor unit with
refrigerant tubing that is
connected to service valve
D (top) of the outdoor unit.
3
2
1
3
2
1
3
2
1
3
2
1
Te r mi nal board
Inter-unit cables
#14 (not provided)
Label A
A
Te r mi nal board
Inter-unit cables
Label B
#14 (not provided)
B
Te r mi nal board
Inter-unit cables
Label C
#14 (not provided)
C
Te r mi nal board
Inter-unit cables
Label D
#14 (not provided)
D
1 2 3 4 5 6 7 8 9 10 11 12
Power supply
(conduit)
Powe r:
Single-phase,
230/208VAC 60HZ
Power switch
(not provided)
Ground
Power cable (not provided)
(#12: Less than 85 ft.)
Be sure to perform grounding.
Attach a ground wire to either the
outdoor unit or indoor unit.
If there is a grounding terminal
inside the room, use the grounding
screw inside the indoor unit.
Be sure to apply the provided labels to both
ends of the inter-unit cables to prevent miswiring. The units will not function if the wiring
connections are incorrect.
G Use a dedicated A/C circuit for power.
G To make connections to the outdoor unit, remove the
inspection panel and tubing panel.
G Do not bring the inter-unit cables or power cable into
contact with tubing or service valves.
G Use outdoor unit cable fasteners and fasten the inter-
unit cables at the location where the cables are doublesheathed.
G Arrange the wiring so that the inter-unit cables are con-
tained in the inspection panel and tubing panel, as
shown in Fig. 31.
# ... AWG (American Wire Gauge)
Inter Unit
(conduit)
Fig. 31
24
Page 91
Regulations on wire size differ from locality to locality. For
field wiring requirements, please refer to your local electrical codes. Make sure that the installation fully complies
with all local and national regulations.
(1) Remove access panel “C”. (Fig. 32)
(2) Connect the inter-unit and power supply line accord-
ing to the drawing on the panel side.
(3) Be sure to size each wire allowing approx. 4"
(10 cm) longer than the required length for wiring.
Store excess wiring inside the cabinet.
(4) When connections are completed, check that all con-
nections are correct as shown in the wiring system
diagram on panel side.
(5) Be sure to ground the unit according to your local
codes.
6. Test Run
Performing a test run
G Refer to the test run procedures in the indoor unit
installation manual.
G Perform the test run separately for each connected
indoor unit. If 2 units are operated simultaneously, it is
not possible to correctly check for errors in tubing and
wiring.
Terminal
block
Conduit
plate
Plug
Lock nut
Inter unit
(Conduit)
Cabinet
Access panel “C”
Power supply
(Conduit)
Fig. 32
Checking tubing and wiring
Perform the test run and check that operation is normal.
If there is an error in tubing or wiring, the refrigerant may
flow to indoor unit B when indoor unit A is operated (for
example).
CAUTION
G Stop operation immediately if there is an error in tubing
or wiring. Turn the power (breaker) to OFF, and check
whether the inter-unit cables are connected incorrectly,
or whether the narrow tubes A and B are connected in
reverse. Correct the connections.
G If there is an error in tubing, pump-down must be per-
formed. Be sure to perform pump-down. After making
corrections, again purge the air from the tubes.
Access panel C
Conduit plate
CAUTION
Make sure there is no gap between
access panel “C” and the conduit plate.
Fig. 33
25
Page 92
7. Connecting a Home Automation device
The HA (white) 4P terminal is located on the indoor unit PCB. If a HA device will be used,
connect it to this terminal.
8. Installation Check Sheet
The strength of the installation location is sufficient to support the A/C weight.
The indoor and outdoor units are installed level and vertically.
The power and voltage are as specified.
Inter-unit cables are securely fastened to the terminal board.
Inter-unit cables are securely fixed.
The power cord and inter-unit cables are not connected anywhere along their paths.
The ground wire is securely connected.
An air purge of the refrigerant circuit has been conducted.
A leak test of the tubing connections has been performed.
Thermal insulation has been applied to the tubing connections.
Drain connections are secure and water drains properly.
Putty has been used to close the hole in the wall.
All service valves are fully open.
Remote controller signals are being positively received.
26
Page 93
UNIT COMBINATION TABLESAPPENDIX B
<
List of Combination Tables
Name of Combination Table
3-Room Outdoor Unit Combination Table
4-Room Outdoor Unit Combination Table
4-Room Outdoor Unit Combination Table
NOTE
Be sure to operate the air conditioning system only when 2 or
more indoor units have been installed. If operated with only a
single unit installed, the returning fluid to the compressor may
cause a malfunction.
>
Model No. of Outdoor Unit
CLM1972
CLM2472
CLM3172
Remarks
OI-852-6-4180-827-00-2
OI-852-6-4180-828-00-2
OI-852-6-4180-829-00-2
A-2
Page 94
Save this Combination Table!
Please be sure to hand over this sheet to the user.
3-Room Outdoor Unit Combination Table
CLM1972
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
CAUTION
In this case, all the indoor units installed must not be operated concurrently under any
circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 3 indoor units are connected
at 230V
It is therefore possible to connect 3 units with respective capacities of 7500 + 11900 + 17500.
However, since this combination is not found in the 3-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 3 indoor units to match one of the combinations
found in the 2-room operation column of Table 1.
at 208V
It is therefore possible to connect 3 units with respective capacities of 7500 + 11900 + 17500.
However, since this combination is not found in the 3-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 3 indoor units to match one of the combinations
found in the 2-room operation column of Table 2.
If the following holds true
Rated cooling capacity of CLM1972 outdoor unit: C=19700 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
19700 x 2 7500 + 11900 + 17500
39400 36900
If the following holds true
Rated cooling capacity of CLM1972 outdoor unit: C=19700 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
19700 x 2 7500 + 11900 + 17500
39400 36900
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180827002 © SANYO 2008
Page 95
< Combinations of operatable indoor units >
Voltage Rating : 230V 60Hz
CLM1972
(Rated cooling capacity at 230V: 19700 BTU/h)
Table 1
Single-room
Operation
2-room
Operation
3-room
Operation
Indoor Unit Combination
7500 = 7500 7500 7500 ( 4700
9000 = 9000 9000 9000 ( 4700
11900 = 11900 11900 11900 ( 5100
17500 = 17500 17500 17500 ( 5400
+
7500
7500
7500
7500
9000
9000
9000
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
11900
7500 = 15000 7500 7500 15000 ( 6800
+
9000 = 16500 7485 9015 16500 ( 6800
+
11900 = 19400 6716 10684 17400 ( 6800
+
17500 = 25000 5717 13383 19100 ( 7100
+
9000 = 18000 8500 8500 17000 ( 6800
+
11900 = 20900 7713 10187 17900 ( 6800
+
17500 = 26500 6659 12941 19600 ( 7100
+
11900 = 23800 9350 9350 18700 ( 6800
+
17500 = 29400 7971 11729 19700 ( 7100
+
+
+
+
+
+
+
+
+
+
+
+
7500
7500
7500
7500
9000
9000
9000
11900
9000
9000
11900
11900
+
7500 = 22500 6133 6133 6133 18400 ( 8500
+
9000 = 24000 5835 5835 7029 18700 ( 9800
+
11900 = 26900 5458 5458 8684 19600 ( 9800
+
17500 = 32500 4538 4538 10624 19700 ( 9800
+
9000 = 25500 5779 6961 6961 19700 ( 9800
+
11900 = 28400 5190 6252 8257 19700 ( 9800
+
17500 = 34000 4334 5221 10146 19700 ( 9800
+
11900 = 31300 4711 7495 7495 19700 ( 9800
+
9000 = 27000 6567 6567 6567 19700 ( 9800
+
11900 = 29900 5932 5932 7835 19700 ( 9800
+
11900 = 32800 5410 7145 7145 19700 ( 9800
+
11900 = 35700 6567 6567 6567 19700 ( 9800
Room Room Room
ABC
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Capacity ( Min.
NOTE
7500 : KMS0772
9000 : KMS0972
11900 : KMS1272
17500 : KMS1872
-
Max. )
-
8800 )
-
10900 )
-
12200 )
-
19700 )
-
17400 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
The table lists the wall-mounted type of indoor units as representative models.
-2-
Page 96
Voltage Rating : 208V 60Hz
CLM1972
(Rated cooling capacity at 208V: 19700 BTU/h)
Table 2
Single-room
Operation
2-room
Operation
3-room
Operation
Indoor Unit Combination
7500 = 7500 7500 7500 ( 4700
9000 = 9000 9000 9000 ( 4700
11900 = 11900 11900 11900 ( 5100
17500 = 17500 17500 17500 ( 5400
+
7500
7500
7500
7500
9000
9000
9000
11900
11900
7500
7500
7500
7500
7500
7500
7500
7500
9000
9000
9000
11900
7500 = 15000 7500 7500 15000 ( 6800
+
9000 = 16500 7485 9015 16500 ( 6800
+
11900 = 19400 6716 10684 17400 ( 6800
+
17500 = 25000 5717 13383 19100 ( 7100
+
9000 = 18000 8500 8500 17000 ( 6800
+
11900 = 20900 7713 10187 17900 ( 6800
+
17500 = 26500 6659 12941 19600 ( 7100
+
11900 = 23800 9350 9350 18700 ( 6800
+
17500 = 29400 7971 11729 19700 ( 7100
+
+
+
+
+
+
+
+
+
+
+
+
7500
7500
7500
7500
9000
9000
9000
11900
9000
9000
11900
11900
+
7500 = 22500 6133 6133 6133 18400 ( 8500
+
9000 = 24000 5835 5835 7029 18700 ( 9800
+
11900 = 26900 5458 5458 8684 19600 ( 9800
+
17500 = 32500 4538 4538 10624 19700 ( 9800
+
9000 = 25500 5779 6961 6961 19700 ( 9800
+
11900 = 28400 5190 6252 8257 19700 ( 9800
+
17500 = 34000 4334 5221 10146 19700 ( 9800
+
11900 = 31300 4711 7495 7495 19700 ( 9800
+
9000 = 27000 6567 6567 6567 19700 ( 9800
+
11900 = 29900 5932 5932 7835 19700 ( 9800
+
11900 = 32800 5410 7145 7145 19700 ( 9800
+
11900 = 35700 6567 6567 6567 19700 ( 9800
Room Room Room
ABC
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
Capacity ( Min.
NOTE
7500 : KMS0772
9000 : KMS0972
11900 : KMS1272
17500 : KMS1872
-
Max. )
-
8800 )
-
10900 )
-
12200 )
-
19700 )
-
17400 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
-
19700 )
The table lists the wall-mounted type of indoor units as representative models.
-3-
Page 97
Save this Combination Table!
Please be sure to hand over this sheet to the user.
4-Room Outdoor Unit Combination Table
CLM2472
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
CAUTION
In this case, all the indoor units installed must not be operated concurrently under any
circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 4 indoor units are connected
at 230V If the following holds true
Rated cooling capacity of CLM2472 outdoor unit: C=25400 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
25400 x 2 7500 + 7500 + 7500 + 17500
50800 40000
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 7500 + 17500.
However, since this combination is not found in the 4-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 1.
at 208V If the following holds true
Rated cooling capacity of CLM2472 outdoor unit: C=24400 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
24400 x 2 7500 + 7500 + 7500 + 17500
48800 40000
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 7500 + 17500.
However, since this combination is not found in the 4-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 2.
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180828002 © SANYO 2008
Page 98
< Combinations of operatable indoor units >
(
)
)
)
(
)
)
)
)
)
)
)
)
)
)
)
)
(
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
Voltage Rating : 230V 60Hz
CLM2472
(Rated cooling capacity at 230V: 25400 BTU/h)
Table 1
Single-room
Operation
2-room
Operation
3-room
Operation
Indoor Unit Combination
7500 = 7500 7500 7500 ( 4700
9000
11900
17500
24200
7500 + 7500
7500 + 9000
7500 + 11900
7500 + 17500
7500 + 24200
9000 + 9000
9000 + 11900
9000 + 17500
9000 + 24200
11900 + 11900
11900 + 17500
11900 + 24200
17500 + 17500
7500 + 7500 + 7500
7500 + 7500 + 9000
7500 + 7500 + 11900
7500 + 7500 + 17500
7500 + 9000 + 9000
7500 + 9000 + 11900
7500 + 9000 + 17500
7500 + 11900 + 11900
7500 + 11900 + 17500
9000 + 9000 + 9000
9000 + 9000 + 11900
9000 + 9000 + 17500
9000 + 11900 + 11900
9000 + 11900 + 17500
11900 + 11900 + 11900
11900 + 11900 + 17500
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
Room Room Room Room
ABCDCapacity ( Min.
9000 9000 9000
11900 11900 11900(5100-12200
17500 17500 17500(5400-19700
24200 23200 23200 ( 5400-23200 )
15000 7500 7500 15000
16500 7485 9015 16500(6800-19700
19400 7488 11912 19400(6800-22800
25000 7124 16676 23800(7100-25200
31700 6009 19391 25400(7100-25400
18000 9000 9000 18000(6800-21400
20900 8876 11724 20600(6800-23200
26500 8494 16506 25000(7100-25400
33200 6904 18496 25400(7100-25400
23800 11400 11400 22800(6800-24800
29400 10277 15123 25400(7100-25400
36100 8387 17013 25400(7100-25400
35000 12700 12700 25400 ( 7100-25400 )
22500 7333 7333 7333 22000
24000 7177 7177 8645 23000(9800-25400
26900 7073 7073 11253 25400(9800-25400
32500 5851 5851 13697 25400(9800-25400
25500 7099 8551 8551 24200(9800-25400
28400 6692 8061 10647 25400(9800-25400
34000 5588 6731 13081 25400(9800-25400
31300 6074 9663 9663 25400(9800-25400
36900 5150 8194 12056 25400(9800-25400
27000 8467 8467 8467 25400(9800-25400
29900 7649 7649 10102 25400(9800-25400
35500 6441 6441 12518 25400(9800-25400
32800 6975 9212 9212 25400(9800-25400
38400 5957 7867 11576 25400(9800-25400
35700 8467 8467 8467 25400(9800-25400
41300 7317 7317 10766 25400 ( 9800-25400 )
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
NOTE
7500 : KMS0772
9000 : KMS0972
11900 : KMS1272
17500 : KMS1872
24200 : KMS2472
-
Max. )
-
4700-10900
6800-17400
8500-25400
8800 )
IMPORTANT!
4-room
Operation
The table lists the wall-mounted type of indoor units as representative models.
(Concurrent operation of 4 indoor units prohibited)
This multi outdoor unit allows up to four indoor units to be connected.
However, all four indoor units must not be operated concurrently.
Otherwise, the air conditioner may not run properly.
Up to three indoor units may be operated concurrently.
-2-
Page 99
Voltage Rating : 208V 60Hz
(
)
)
)
(
)
)
)
)
)
)
)
)
)
)
)
)
(
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
CLM2472
(Rated cooling capacity at 208V: 24400 BTU/h)
Table 2
Single-room
Operation
2-room
Operation
3-room
Operation
Indoor Unit Combination
7500 = 7500 7500 7500 ( 4700
9000
11900
17500
24200
7500 + 7500
7500 + 9000
7500 + 11900
7500 + 17500
7500 + 24200
9000 + 9000
9000 + 11900
9000 + 17500
9000 + 24200
11900 + 11900
11900 + 17500
11900 + 24200
17500 + 17500
7500 + 7500 + 7500
7500 + 7500 + 9000
7500 + 7500 + 11900
7500 + 7500 + 17500
7500 + 9000 + 9000
7500 + 9000 + 11900
7500 + 9000 + 17500
7500 + 11900 + 11900
7500 + 11900 + 17500
9000 + 9000 + 9000
9000 + 9000 + 11900
9000 + 9000 + 17500
9000 + 11900 + 11900
9000 + 11900 + 17500
11900 + 11900 + 11900
11900 + 11900 + 17500
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
Room Room Room Room
ABCDCapacity ( Min.
9000 9000 9000
11900 11900 11900(5100-12200
17500 17500 17500(5400-19700
24200 22400 22400 ( 5400-22400 )
15000 7500 7500 15000
16500 7485 9015 16500(6800-19700
19400 7488 11912 19400(6800-22800
25000 7124 16676 23800(7100-24200
31700 5772 18628 24400(7100-24400
18000 9000 9000 18000(6800-21400
20900 8876 11724 20600(6800-23200
26500 8290 16110 24400(7100-24400
33200 6632 17768 24400(7100-24400
23800 11400 11400 22800(6800-23200
29400 9873 14527 24400(7100-24400
36100 8057 16343 24400(7100-24400
35000 12200 12200 24400 ( 7100-24400 )
22500 7333 7333 7333 22000
24000 7177 7177 8645 23000(9800-24200
26900 6739 6739 10722 24200(9800-24400
32500 5575 5575 13050 24200(9800-24400
25500 7099 8551 8551 24200(9800-24200
28400 6429 7744 10228 24400(9800-24400
34000 5368 6466 12566 24400(9800-24400
31300 5835 9283 9283 24400(9800-24400
36900 4947 7871 11582 24400(9800-24400
27000 8133 8133 8133 24400(9800-24400
29900 7348 7348 9705 24400(9800-24400
35500 6188 6188 12025 24400(9800-24400
32800 6701 8850 8850 24400(9800-24400
38400 5722 7558 11120 24400(9800-24400
35700 8133 8133 8133 24400(9800-24400
41300 7029 7029 10342 24400 ( 9800-24400 )
Indoor Unit Capacity (BTU/h)
COOLING
Total Performance
NOTE
7500 : KMS0772
9000 : KMS0972
11900 : KMS1272
17500 : KMS1872
24200 : KMS2472
-
Max. )
-
4700-10900
6800-17400
8500-24200
8800 )
IMPORTANT!
4-room
Operation
The table lists the wall-mounted type of indoor units as representative models.
(Concurrent operation of 4 indoor units prohibited)
This multi outdoor unit allows up to four indoor units to be connected.
However, all four indoor units must not be operated concurrently.
Otherwise, the air conditioner may not run properly.
Up to three indoor units may be operated concurrently.
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Page 100
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4-Room Outdoor Unit Combination Table
CLM3172
<Combinations of Connectable Indoor Units>
The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be
operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible
provided that the following conditions are satisfied.
Conditions:
1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor
unit to be connected.
2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling
capacity of the outdoor unit.
CAUTION
In this case, all the indoor units installed must not be operated concurrently under any
circumstances. Otherwise, the air conditioner may not run properly and trouble may
occur.
Example: When 4 indoor units are connected
at 230V
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200.
However, since this combination is not found in the 4-room operation column of Table 1, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 1.
at 208V
It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200.
However, since this combination is not found in the 4-room operation column of Table 2, operating all these units concurrently
may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations
found in the 3-room operation column of Table 2.
If the following holds true
Rated cooling capacity of CLM3172 outdoor unit: C=30600 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
30600 x 2 7500 + 7500 + 11900 + 24200
61200 51100
If the following holds true
Rated cooling capacity of CLM3172 outdoor unit: C=28600 (BTU/h)
Rated cooling capacity of indoor units: K1, K2, ... (BTU/h)
Then:
C x 2 (200%) K1 + K2 + .......
28600 x 2 7500 + 7500 + 11900 + 24200
57200 51100
NOTE
Be sure to operate the air conditioning system only when 2 or more indoor units have been installed.
If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction.
Pub. OI-85264180829002 © SANYO 2008
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