Sanyo CM2472 User Manual

IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
●
Wall mounted type
KMS0772
KMS0972
KMS1272
KMS1872
KMS2472
< Applicable Indoor Units >
TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : CLM1972
CLM2472
CLM3172
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Destination: North America
Product Code No.
1 852 330 33
1 852 330 34
1 852 330 35
REFERENCE NO.
SM700680-03
Capacity at 230V
19,700 BTU/h
25,400 BTU/h
30,600 BTU/h
Outdoor Model No.
CLM1972
CLM2472
CLM3172
NOTE
CLM1972
CLM2472
CLM3172
For details about the combination, refer to
"Unit Combination Table" in the Appendix
of this manual.
FILE NO.

Sanyo CM2472 Specifications

General

Noise Level (Indoor)	45 dB
Noise Level (Outdoor)	55 dB
Type	Split
Power Supply	220V, 50Hz
Cooling Capacity	24000 BTU/h

Summary

APPLICABLE INDOOR UNITS

OPERATING RANGE

Defines the operational temperature and conditions for cooling.

SPECIFICATIONS

Unit Specifications

Details electrical and physical specifications for each outdoor unit model.

Major Component Specifications

Lists specifications for key components like compressor, fan motor, and coils.

Other Component Specifications

Provides details on sensor models and their quantities for different units.

DIMENSIONAL DATA

REFRIGERANT FLOW DIAGRAM

Refrigerant Flow Diagram

Illustrates the path of refrigerant through the system components.

PERFORMANCE DATA

Temperature Charts

Presents performance charts based on indoor and outdoor air temperatures.

Cooling Capacity

Tabulates total and sensible cooling capacities under various conditions.

Cooling Capacity (Low Ambient)

Details cooling capacities at low ambient outdoor temperatures.

ELECTRICAL DATA

Electric Wiring Diagrams

Provides detailed wiring diagrams for each outdoor unit model.

FUNCTIONS

Explanation of Functions

Explains basic unit operations, including ON/OFF and automatic modes.

Protective Functions

Describes system protections like current control and freeze prevention.

TROUBLESHOOTING

Precautions before Performing Inspection or Repair

Highlights safety precautions, especially regarding electrical charges.

Trouble Diagnosis by Error Monitor Lamps

Details how to interpret error codes indicated by monitor lamps.

Checking the Outdoor System

Outlines procedures for checking the outdoor unit's basic operation.

Trouble Diagnosis of Each Part

Provides a table mapping problems to inspection points for various components.

Trouble Diagnosis of Fan Motor

Guides troubleshooting for the outdoor DC fan motor issues.

REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT

Characteristics of New Refrigerant R410A

Explains the properties and handling precautions for R410A refrigerant.

Checklist before Servicing

Lists essential checks and precautions before performing service.

Tools Specifically for R410A

Lists specialized tools required for servicing R410A systems.

Tubing Installation Procedures

Details the correct procedures for installing refrigerant tubing.

In Case of Compressor Malfunction

Provides steps for replacing a malfunctioning compressor.

In Case Refrigerant is Leaking

Outlines procedures for detecting, repairing, and recharging refrigerant leaks.

Charging Additional Refrigerant

Explains how to properly charge refrigerant, especially when tubes are extended.

Retro-Fitting Existing Systems

Advises on using existing units and tubing when transitioning to R410A.

APPENDIX A INSTALLATION INSTRUCTIONS

General

Covers general tools, accessories, and materials required for installation.

Installation Site Selection

Guides on choosing optimal locations for indoor and outdoor unit installation.

Installation Process

Details the steps for installing tubing, flaring, and making connections.

Air Purging

Explains the process of removing air and moisture from the refrigerant system.

Wiring Instructions

Covers wiring precautions, wire sizing, and connection procedures.

Test Run

Describes how to perform a test run and check for errors.

Connecting a Home Automation device

Explains how to connect a home automation device to the indoor unit.

Installation Check Sheet

Provides a checklist to ensure all installation steps are completed correctly.

APPENDIX B UNIT COMBINATION TABLES

3-Room Outdoor Unit Combination Table CLM1972

Lists valid combinations for 3-room setups with CLM1972 outdoor units.

4-Room Outdoor Unit Combination Table CLM2472

Lists valid combinations for 4-room setups with CLM2472 outdoor units.

4-Room Outdoor Unit Combination Table CLM3172

Lists valid combinations for 4-room setups with CLM3172 outdoor units.