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C : Standardization D : Design change E : Addition of parts F : New information Page No. Reason Contents of the Manual for change APPENDIX A Table 6 Fuse or Circuit Capacity of CM1972A : 20 700856-03 REFERENCE NO.
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For Parts or Service Assistance please contact your local Sanyo HVAC Contractor or Distributor United States: SCS, HVAC Solutions Canada: Sanyo Canada Inc. Web: www.SanyoHVAC.com Web: www.SanyoHVAC.com Parts: hvac.parts@sna.sanyo.com Parts/Service: hvac@sci.sanyo.com Service: hvac.service@sna.sanyo.com 6/11 Printed in Japan...
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TECHNICAL & SERVICE MANUAL OUTDOOR UNIT : CM1972A FILE NO. CM2472A CM3172A Destination: North America DC INVERTER MULTI-SYSTEM AIR CONDITIONER Capacity at 230V Outdoor Model No. Product Code No. 19,700 BTU/h CM1972A 1 852 356 14 CM2472A 1 852 356 11...
SAFETY PRECAUTIONS • Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here are divided into " Warning" and " Caution" items. Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly, are included in the "...
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Warning If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite. Prohibit If refrigerant gas leaks during the work, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated. Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle.
Table of Contents Page SAFETY PRECAUTIONS ......................TABLE OF CONTENTS ........................APPLICABLE INDOOR UNITS ..................... 1. OPERATING RANGE ........................2. SPECIFICATIONS 2-1. Unit Specifications ......................2-2. Major Component Specifications ..................2-3. Other Component Specifications ..................3. DIMENSIONAL DATA ........................4. REFRIGERANT FLOW DIAGRAM 4-1.
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Page 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 ....................
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 : CM1972A 1unit 2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
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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 : CM1972A 1unit 2. Rating conditions are: Cooling : Indoor air temp. 80°F D.B./ 67°F W.B.
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CM2472A Outdoor Unit KMS0972 Indoor Unit × < 230V > Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating 230V Single-Phase 60Hz Cooling Total Capacity BTU/h 25,400 ( 9,800 to 25,400 ) 7.50 ( 2.90 to 7.50 ) Sensible Capacity...
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CM2472A Outdoor Unit KMS0972 Indoor Unit × < 208V > Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating 208V Single-Phase 60Hz Cooling Total Capacity BTU/h 24,400 ( 9,800 to 24,400 ) 7.20 ( 2.90 to 7.20 ) Sensible Capacity...
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CM3172A Outdoor Unit KMS0972 Indoor Unit × < 230V > Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating 230V Single-Phase 60Hz Cooling Total Capacity BTU/h 30,600 ( 9,800 to 30,600 ) 9.00 ( 2.90 to 9.00 ) Sensible Capacity...
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CM3172A Outdoor Unit KMS0972 Indoor Unit × < 208V > Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Voltage Rating 208V Single-Phase 60Hz Cooling Total Capacity BTU/h 28,600 ( 9,800 to 28,600 ) 8.40 ( 2.90 to 8.40 ) Sensible Capacity...
2-2. Major Component Specifications 2-2-1. Outdoor Unit CM1972A Outdoor Unit Control PCB Part No. CB-CM1972A Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5KD240XAB21 / 1,700W Compressor Oil ... Amount Pints (cc) FV50S ...
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CM2472A Outdoor Unit Control PCB Part No. CB-CM2472A Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5KD240XAB21 / 1,700W Compressor Oil ... Amount Pints (cc) FV50S ... 1.91 (900) Coil Resistance (Ambient Temp. 68 °F (20 °C)) U - V : 0.720 V - W :...
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CM3172A Outdoor Unit Control PCB Part No. CB-CM3172A Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5JD420XAB22 / 3,000W Compressor Oil ... Amount Pints (cc) FV50S ... 2.55 (1,200) Coil Resistance (Ambient Temp. 68 °F (20 °C)) U - V : 0.435 V - W :...
2-3. Other Component Specifications Quantity of Sensor Model No. Sensor Name of sensor CM1972A CM2472A CM3172A Outdoor air temp sensor TKS295B Outdoor heat exchanger sensor TKS292B AW / AN sensor TKS292B 1 / 1 1 / 1 1 / 1...
4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram Outdoor Unit CM1972A Indoor unit Outdoor unit Service valve on wide tube Wide tube Main O.D.3/8" accumulator accumulator O.D.3/8" O.D.3/8" High pressure Header switch H.P. Electric expansion valve Service valve on narrow tube Narrow tube O.D.1/4"...
Outdoor Unit CM2472A Indoor unit Outdoor unit Service valve on wide tube Wide tube Main O.D.1/2" accumulator accumulator O.D.3/8" High pressure O.D.3/8" switch H.P. O.D.3/8" Header Electric expansion Service valve on valve narrow tube Narrow tube O.D.1/4" O.D.1/4" O.D.1/4" O.D.1/4" Strainer Header Cooling cycle...
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Outdoor Unit CM3172A Indoor unit Outdoor unit Service valve on wide tube Wide tube Main O.D.1/2" accumulator accumulator O.D.1/2" O.D.3/8" High pressure switch H.P. O.D.3/8" Header Electric expansion Service valve on valve narrow tube Narrow tube O.D.1/4" O.D.1/4" O.D.1/4" O.D.1/4" Strainer Header Cooling cycle...
5. PERFORMANCE DATA 5-1. Temperature Charts 5-1-1. Temperature Charts (CM1972A) Outdoor Unit CM1972A Indoor Unit KMS0772 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.3)
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Outdoor Unit CM1972A Indoor Unit KMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.3) (1.2) (1.1) (1.0) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C)
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Outdoor Unit CM1972A Indoor Unit KMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.2) (1.1) (1.0) (0.9) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C)
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Outdoor Unit CM1972A Indoor Unit KMS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart HH fan Lo fan Hi fan (1.2) (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C)
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Outdoor Unit CM1972A Indoor Unit XMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.2) (1.1) (1.0) (0.9) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C)
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Outdoor Unit CM1972A Indoor Unit XMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart (1.2) Lo fan Hi fan HH fan (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C)
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Outdoor Unit CM1972A Indoor Unit XS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart (1.2) HH fan Lo fan Hi fan (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C)
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5-1-2. Temperature Charts (CM2472A) Outdoor Unit CM2472A Indoor Unit KMS0772 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.3) (1.2) (1.1) (1.0) 77 (25) (30) (35)
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Outdoor Unit CM2472A Indoor Unit KMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.3) (1.2) (1.1) (1.0) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan...
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Outdoor Unit CM2472A Indoor Unit KMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.2) (1.1) (1.0) (0.9) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan...
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Outdoor Unit CM2472A Indoor Unit KMS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart HH fan Lo fan Hi fan (1.2) (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
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Outdoor Unit CM2472A Indoor Unit KMS2472 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.2) (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart HH fan Lo fan...
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Outdoor Unit CM2472A Indoor Unit XMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan HH fan (1.2) (1.1) (1.0) (0.9) 77 (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan...
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Outdoor Unit CM2472A Indoor Unit XMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart (1.2) Lo fan Hi fan HH fan (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
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Outdoor Unit CM2472A Indoor Unit XS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart (1.2) HH fan Lo fan Hi fan (1.1) (1.0) (0.9) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
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5-1-3. Temperature Charts (CM3172A) Outdoor Unit CM3172A Indoor Unit KMS0772 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan Hi fan HH fan (1.2) (1.0) (0.8) (0.6) (25) (30)
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Outdoor Unit CM3172A Indoor Unit KMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan Hi fan HH fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart...
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Outdoor Unit CM3172A Indoor Unit KMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan Hi fan HH fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart...
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Outdoor Unit CM3172A Indoor Unit KMS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
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Outdoor Unit CM3172A Indoor Unit KMS2472 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
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Outdoor Unit CM3172A Indoor Unit XMS0972 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan Hi fan HH fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart...
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Outdoor Unit CM3172A Indoor Unit XMS1272 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan Hi fan HH fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart...
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Outdoor Unit CM3172A Indoor Unit XS1872 × Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (230V, 60Hz) (1) Low pressure performance chart Lo fan Hi fan (1.2) (1.0) (0.8) (0.6) (25) (30) (35) (40) Outdoor air temperature °F (°C) (2) Operating current performance chart Lo fan Hi fan...
6. ELECTRICAL DATA 6-1. Electric Wiring Diagrams Outdoor Unit CM1972A UNIT INDOOR SUPPLY UNIT UNIT UNIT POWER INDOOR INDOOR INDOOR GRN/YEL GRN/YEL (2P)CONNECTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR (7P)CONNECTOR THERMISTOR OUTDOOR SWITCH COMP THERMISTOR PRESSURE HIGH COIL CORE FERRITE...
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Outdoor Unit CM2472A UNIT INDOOR SUPPLY UNIT UNIT UNIT UNIT POWER INDOOR INDOOR INDOOR INDOOR GRN/YEL GRN/YEL (2P)CONNECTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR (7P)CONNECTOR THERMISTOR OUTDOOR SWITCH COMP THERMISTOR PRESSURE HIGH COIL CORE FERRITE (PNK) (PNK) THERMISTOR COMPRESSOR (3P)CONNECTOR 8FA2-5257-59600-1...
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Outdoor Unit CM3172A UNIT INDOOR SUPPLY UNIT UNIT UNIT UNIT POWER INDOOR INDOOR INDOOR INDOOR CORE FERRITE GRN/YEL GRN/YEL (2P)CONNECTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR (7P)CONNECTOR THERMISTOR OUTDOOR SWITCH COMP THERMISTOR PRESSURE HIGH COIL CORE FERRITE (PNK) (PNK) THERMISTOR COMPRESSOR...
7. FUNCTIONS 7-1. Explanation of Functions The numerical values such as temperature, frequency, time and current in parentheses are an example NOTE of CM3172A and the values are different from the other models. Control/conditions Unit operation Explanation INITIAL Breaker is ON. Power is supplied to the indoor and outdoor unit control circuits, however the unit remains stopped.
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Control/conditions Unit operation Explanation COOL The ON/OFF operation The operation lamp illuminates. The outdoor unit does not operate for 3 minutes button on the remote even after the breaker is turned ON. The indoor fan operates at the set fan speed. controller is pressed.
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(1/f fluctuation fan) Control/conditions Unit operation Explanation SENSOR The ON/OFF operation The operation lamp illuminates. The outdoor unit does not operate for 3 minutes button on the remote even after the breaker is turned ON. The indoor fan operates at the set fan speed. controller is pressed.
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< Low Ambient Cooling Operation > 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.
7-2. Protective Functions NOTE The numerical values such as temperature, frequency, time and current in parentheses are an example of CM3172A 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.
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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) Example of operation during cooling Trip Hz reduction Hz reduction Hz increase prohibit Hz increase prohibit Hz reduction (16) Hz increase prohibit (15.6) Frequency (Hz)
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 outdoor- side 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.
8-2. Trouble Diagnosis by Error Monitor Lamps To prevent electric shock, do not inspect or repair until the Power Lamp on Warning 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.
8-3. Checking the Outdoor System 8-3-1. Checking the outdoor unit Work procedure Check items (unit operation) • Apply 220 V AC between terminals L1 and L2 on the • The LED (red) on the control board must illuminate. outdoor unit terminal plate. •...
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. Indoor unit Outdoor unit Others Problems No. of Inspection Points for Each part Inspection points Self-Diagnostics check...
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Indoor unit Outdoor unit Others Problems No. of Inspection Points for Each part Inspection points Breaker Refrigerant gas pressure 8-4-2. Inspection Points for Each Part (1) Outdoor control circuit board Refer to 8-3-1. Checking the outdoor unit. Do not remove or insert the outdoor control circuit board connector when power is being supplied to it. NOTE (The controller will be damaged.) (2) Fuse...
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10 to 20 seconds for No voltage on circuit board Voltage varies each point. Model No. Sequence CM1972A CM2472A CM3172A Check the coil resistance. Check the illumination Check the resistance between the gray lead of the red Power Lamp.
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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.
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: (A) Turn OFF the power before connecting or disconnecting the motor connectors.
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.
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.
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 Vacuum pump with anti-reverse flow (*1) Tools specifically for R410A (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.
9-5. In Case of Compressor Malfunction Should the compressor malfunction, be sure to make the switch to a replacement CAUTION 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 (1) Recover refrigerant...
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(5) Recharging Configuration and characteristics of cylinders Be sure to charge the specified amount of Valve 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.
9-6. In Case Refrigerant is Leaking Never attempt to charge additional refrigerant when refrigerant has been leaking CAUTION 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.
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. Never charge additional refrigerant if refrigerant is leaking from the unit. Follow CAUTION instructions given in "9-6.
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IMPORTANT! Please Read Before Starting When Installing… …In a Ceiling or Wall This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important Make sure the ceiling/wall is strong enough to hold the part of your job to install or service the system so it operates unit’s weight.
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(1/2" 3/8") CM3172A Packed in the outdoor unit. Reducer Labels for inter-unit 4 each CM1972A A B C D (3/8" 1/2") cable and tube 1-3. Optional Copper Tubing Kit Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing.
2. Installation Site Selection Indoor unit 2-1. Indoor Unit To prevent abnormal heat generation WARNING 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.
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(L1+L2+L3) or (H1, H2, H3, H4) Refrigerant per unit (L1+L2+L3) or (L1+L2+L3+L4) (ft.) (oz./ft.) (ft.) (L1+L2+L3+L4) (ft.) (ft.) CM1972A 150 (L1+L2+L3) 150 (L1+L2+L3) — CM2472A 150 (L1+L2+L3+L4) 200 (L1+L2+L3+L4) 0.22 CM3172A 150 (L1+L2+L3+L4) 230 (L1+L2+L3+L4) 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.
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Figures (4a) – (4k) show the different types of indoor unit connections, including the use of a reducer. To select the required indoor unit to be connected, refer to the Combination Table that was included in the outdoor unit package. (1) Connecting indoor unit for CM1972A Outdoor unit Indoor unit 3/8"(9.52mm)
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Outdoor unit Indoor unit 1/2"(12.70mm) (KMS1872) (XS1872) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Fig. 4d (1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm) Outdoor unit Indoor unit 5/8"(15.88mm) (KMS2472) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm)
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(3) Connecting indoor unit for CM3172A (1/2"(12.70mm) 3/8"(9.52mm)) Supplied Reducer Flare 1/2"(12.70mm) Union 3/8"(9.52mm) Outdoor unit Indoor unit 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Fig. 4g (1/2"(12.70mm 3/8"(9.52mm)) Supplied Reducer Flare 1/2"(12.70mm)
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(1/2"(12.70mm) 5/8"(15.88mm))Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm) Outdoor unit Indoor unit 5/8"(15.88mm) (KMS2472) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Flare 1/2"(12.70mm) Union 3/8"(9.52mm) (1/2"(12.70mm) 3/8"(9.52mm))Supplied Reducer Fig. 4j (1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm)
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2-3. Outdoor Unit Exhaust fan AVOID: Hot air heat sources, exhaust fans, etc. (Fig. 5a) Heat source damp, humid or uneven locations. Obstacle above Outdoor unit choose a place as cool as possible. Min. choose a place that is well ventilated. Min.
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25/32 CM3172A (mm) For Air Discharge Dimensions Model CM1972A, 2472A, (inch) 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 3172A (mm) Material to be used: Metal plate with corrosion protection treatment Plate thickness: 0.0394 to 0.0472" (1.0 to 1.2 mm)
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(3) Installation procedure 1. Air Intake Baffle 2. Air Discharge Baffle 1. Remove the panels front, top, side L and R from the (1) Left side unit and drill 4 holes of ø1/4 inch (6.5 mm) at the 1. Remove the top panel from the unit. prescribed positions.
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2-5. Outer Dimensions of Outdoor Unit (1) CM1972A 23-15/16 5-11/32 15/32 35-7/16 (900) 2-29/32 Service valve on narrow tube side (Outer diameter 1/4"( 6.35 )) Service valve on wide tube side (Outer diameter 3/8"( 9.52 )) 2-1/32 4-1/2 1-13/16 2-1/16 Fig.
Diagram of Outdoor Unit Installation 2-6. Never install only a single indoor unit. Ceiling-mounted Wall-mounted types cassette types Indoor unit D Indoor unit D 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.
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3. Installation Process Embedding the Tubing and Wiring 3-1. Do not connect tubes to locations that are embedded. Be sure to bind refrigerant tubing and inter-unit cables together with vinyl tape. The power cable must be obtained on-site. (#12: Less than 85 ft.) # ...
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NOTE Copper tubing When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 9) (3) Remove the flare nut from the unit and be sure to mount Reamer it on the copper tube. (4) Make a flare at the end of copper tube with a flare tool.* (Figs.
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Torque wrench Be sure to match refrigerant CAUTION tubing and electric wiring between indoor and outdoor Spanner Indoor unit units. Outdoor unit Fig. 15 3-6. Insulation of Refrigerant Tubing Insulation IMPORTANT Thickness: min. 5/16" Min. To prevent heat loss and wet floors due to dripping of con- (8 mm) 5/16"...
3-7. Taping the Tubes After a tube has been insulated, CAUTION never try to bend it into a narrow curve, as this may cause the tube Clamp to break or crack. Insulated tubes (1) At this time, the 2 refrigerant tubes (and electrical wire if local codes permit) should be taped together with armoring tape.
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Stopper Cap tightening torque: 170 – 215 lbs·in Spindle Perform the air purge for tubes A, B, C, and D. Use the same (200 – 250 kgf·cm) procedures for all tubes. Service port (Tighten by hand, then Screw diameter: 1/2 use a wrench to turn (1) Check that each tube (both narrow and wide tubes) UNF 20 threads...
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(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)).
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 break- er for overcurrent protection provided in the exclusive line.
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Electrical noise may CAUTION affect the operation. Always comply with national and local code requirements. 5-3. Wiring System Diagram 4 indoor units with CM2472A, CM3172A 3 indoor units with CM1972A Disconnect Disconnect switch switch Field supply Field supply...
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5-4. How to Connect Wiring to the Terminal Loose wiring may cause the WARNING terminal to overheat or result in unit malfunction. A fire hazard may also exist. There- fore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring 9/32"...
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5-5. Wiring Instructions for the Outdoor Unit CAUTION Be sure to correctly align inter-unit cables A, B, C and D. Outdoor unit Terminal board Power supply 1 2 3 4 5 6 7 8 9 10 11 12 (conduit) Power: Single-phase, 230/208VAC 60HZ Power breaker...
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Regulations on wire size differ from locality to locality. For Lock nut Cabinet field wiring requirements, please refer to your local electri- cal 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.
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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 air conditioner weight. The indoor and outdoor units are installed level and vertically.
Name of Model No. of Type of Remarks Combination Table Outdoor Unit Indoor Unit Wall Mounted Type OI-852-6-4180-818-00-5 3-Room Outdoor Unit CM1972A Combination Table Semi-Concealed Type OI-852-6-4181-163-00-1 Wall Mounted Type OI-852-6-4180-819-00-5 4-Room Outdoor Unit CM2472A Combination Table Semi-Concealed Type OI-852-6-4181-164-00-1...
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< Combinations of operatable indoor units > Voltage Rating : 230V 60Hz CM3172, A NOTE (Rated cooling capacity at 230V: 30600 BTU/h) 9000 : XMS0972 11900 : XMS1272 17500 : XS1872 Table 1 Indoor Unit Capacity (BTU/h) COOLING Indoor Unit Combination Total Performance Room Room...
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Voltage Rating : 208V 60Hz CM3172, A NOTE (Rated cooling capacity at 208V: 28600 BTU/h) 9000 : XMS0972 11900 : XMS1272 17500 : XS1872 Table 2 Indoor Unit Capacity (BTU/h) COOLING Indoor Unit Combination Total Performance Room Room Room Room Capacity ( Min.
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For Parts or Service Assistance please contact your local Sanyo HVAC Contractor or Distributor United States: SCS, HVAC Solutions Canada: Sanyo Canada Inc. Web: www.SanyoHVAC.com Web: www.SanyoHVAC.com Parts: hvac.parts@sna.sanyo.com Parts/Service: hvac@sci.sanyo.com Service: hvac.service@sna.sanyo.com 6/11 Printed in Japan...