Mars COMFORT-AIRE CMA12SD-0 Installation, Operation & Maintenance Manual Download Page 2

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Owner’s Manual -

CMA12-48SD

Horizontal/Side Discharge Condensing Units:

Installation, Operation and Maintenance

TABLE OF CONTENTS

Safety Precautions ................................................................................................................... 3

General Operating Instructions................................................................................................. 4

General Product Information .................................................................................................... 5

Outdoor Unit Installation ........................................................................................................6-7

Unit Wiring ..........................................................................................................................

.....

Wiring Diagrams ..................................................................................................................

-1

Refrigerant Piping ...................................................................................................................

Leak Test, Evacuation & Release of Refrigerant ....................................................................

Initial Start-Up & Checks ........................................................................................................

Field Charging ........................................................................................................................

nal

Inspection ......................................................................................................................

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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