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Owner’s Manual -  

CMA12-48SD 

 

  

 

3

1) Install according to these installation instructions strictly. If installation is defective, it will cause water

leakage, electrical shock fire, and may void the warranty.

 

 

 

.

2) Use the manufacturer’s specified and supplied parts only

3) Install in a strong and firm location which is able to withstand the unit’s weight. If the strength is

insufficient or installation is not properly done, the units can fall and cause injury.

4) For electrical work, follow all local and National electrical codes  and these installation instructions.

An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or a

defect found in electrical work, it may cause electrical shock or fire.

5) Use the specified cable, connect tightly and clamp the cable so that no external force will be applied

to the terminal. If connection is loose, it may cause excessive heat build up.

6) Wire routing must be properly arranged so that control board cover is fixed properly. If control board

cover is not fixed perfectly, it will cause heat build up at connection point of terminal, fire or electrical shock.

     

 

     

 

   

 

   

     

 

7) When carrying out piping connections, take care not to let air substances other than the specified

refrigerant go into refrigeration circuit. Otherwise, it will cause lower capacity, abnormal high pressure

in the refrigeration cycle, explosion and injury.

1) This equipment must be properly grounded and installed with 

ground leakage circuit breaker,

 electrical shock.

otherwise it may cause

2)

 

Do not install th

is

 unit in places where leakage of flammable gas may occur. If gas leaks and

accumulates near the unit, it may cause fire.

3) Carry out drainage piping as mentioned in installation instructions. If drainage is not properly done,

water may enter the room and damage furniture.

          The seriousness of safety precautions is classified by the following indications:

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to property.

SAFETY PRECAUTIONS

CAUTION

WARNING

CAUTION

WARNING

      Please read this installation manual completely before installing the product.

      If the power cord is damaged, replacement work shall be performed by authorized personnel only.

      Installation work must be performed in accordance with all local and national codes by authorized 

      personnel only. 

      Contact an authorized service technician for repair, maintenance or installation of this unit.

       

The design and specifications are subject to change without prior notice for product improvement. 

      Consult with the sales agency or manufacturer for details.

All the pictures in the instructions are for explanation purposes only, and may differ from the actual 

      product you purchased.

      

 

Summary of Contents for COMFORT-AIRE CMA12SD-0

Page 1: ...INSTALLATION OPERATION MAINTENANCE MANUAL Horizontal Side Discharge Condensing Units Models CMA12SD 0 CMA18SD 1 CMA24SD 1 CMA30SD 1 CMA36SD 1 CMA48SD 1 517 787 2100 www marsdelivers com...

Page 2: ...ance TABLE OF CONTENTS Safety Precautions 3 General Operating Instructions 4 General Product Information 5 Outdoor Unit Installation 6 7 Unit Wiring 8 Wiring Diagrams 9 12 Refrigerant Piping 13 Leak T...

Page 3: ...uit Otherwise it will cause lower capacity abnormal high pressure in the refrigeration cycle explosion and injury 1 This equipment must be properly grounded and installed with a ground leakage circuit...

Page 4: ...e frequent starts call your service contractor 4 For energy conservation reasons you may want to set your thermostat at a higher temperature when you are away Do not raise the temperature setting by m...

Page 5: ...ar metering devices are acceptable for use but bleed style thermostatic expansion valves should be used where specific AHRI Match ratings require or where oversized coils or other application specific...

Page 6: ...of onto the unit In climates where snow is a consideration locate the unit away from areas prone to drifting Ensure the location of the unit will not be subject to snow drifts heavy accumulation of sn...

Page 7: ...and outlets are not obstructed See Fig 4 Anchor the outdoor unit with a 10mm 3 8 inch diameter bolt and nut tightly on a concrete or rigid surface See Fig 5 Anchoring is especially recommended in seas...

Page 8: ...compressor and other electrical components and voids the warranty NOTE The supply voltage must be consistent with the rated voltage of the air conditioner not to exceed 10 Ensure the unit is properly...

Page 9: ...48SD 9 Owner s Manual CMA12 48SD 9 OUTDOOR UNIT WIRING CONNECTION continued NOTE Please refer to the installation instructions of the 24V thermostat used in conjunction with this unit for additional...

Page 10: ...Owner s Manual CMA12 48SD 10 Owner s Manual CMA12 48SD 10 OUTDOOR UNIT WIRING CONNECTION continued...

Page 11: ...Owner s Manual CMA12 48SD 11 Owner s Manual CMA12 48SD 11 OUTDOOR UNIT WIRING CONNECTION continued...

Page 12: ...Owner s Manual CMA12 48SD 12 Owner s Manual CMA12 48SD 12 OUTDOOR UNIT WIRING CONNECTION continued...

Page 13: ...s service valves are shipped in the closed position and should not be opened until final connections leak testing and evacuation are completed The recommended procedure for leak test evacuation and r...

Page 14: ...temperature and humidity all have an effect on the system pressures and superheat conditions Charge must be added for the interconnecting tubing Use of piston style metering device is typical Where T...

Page 15: ...original consumer The consumer must retain a receipted bill of sale as proof of warranty period Without this proof the express warranty begins on the date of shipment from the factory REMEDY PROVIDED...

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