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517.787.2100 • www.marsdelivers.com

Installation, Operation and 

Maintenance Manual

Horizontal/Side Discharge 

Condensing Units

Models:

CMA1412SG-0

CMA1418SG-1

CMA1424SG-1

CMA1430SG-1

CMA1436SG-1

CMA1448SG-1

Summary of Contents for Comfort-Aire CMA1412SG-0

Page 1: ...17 787 2100 www marsdelivers com Installation Operation and Maintenance Manual Horizontal Side Discharge Condensing Units Models CMA1412SG 0 CMA1418SG 1 CMA1424SG 1 CMA1430SG 1 CMA1436SG 1 CMA1448SG 1...

Page 2: ...ion Operation and Maintenance TABLE OF CONTENTS Safety Precautions 3 General Operating Instructions 4 General Product Information 5 Outdoor Unit Installation 6 7 Unit Wiring 8 12 Wiring Diagrams 8 12...

Page 3: ...efrigeration cycle explosion and injury 8 Do not modify the length of the power supply cord or use an extension cord and do not share the single outlet with other electrical appliances Otherwise it ma...

Page 4: ...imes per hour If you notice more 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 rai...

Page 5: ...uctless air handlers may be used but often do not include an expansion device A properly sized thermostatic expansion valve is recommended Consult AHRI s directory of certified products for indoor mat...

Page 6: ...r snow or ice may fall from a roof 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...

Page 7: ...e maintained to ensure that the air inlets 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...

Page 8: ...ll likely result in failure of the 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 exc...

Page 9: ...tinued NOTE1 Please refer to the installation instructions of the 24V thermostat used in conjunction with this unit for additional wiring instructions TERMINAL bLOCk OF OUTDOOR UNIT TERMINAL bLOCk OF...

Page 10: ...Horizontal Side Discharge Condensing Units 10 Horizontal Side Discharge Condensing Units OUTDOOR UNIT WIRING CONNECTION continued 12K 18K NOTE For reference only the actual wiring diagram shall preva...

Page 11: ...IOM Horizontal Side Discharge Condensing Units 11 24K 30K NOTE For reference only the actual wiring diagram shall prevail 36K...

Page 12: ...IOM Horizontal Side Discharge Condensing Units 12 48K Horizontal Side Discharge Condensing Units 12 NOTE For reference only the actual wiring diagram shall prevail...

Page 13: ...added for interconnecting tubing The unit s service valves are shipped in the closed position and should not be opened until final connections and evacuation are completed The recommended procedure fo...

Page 14: ...s a reference to ensure performance 2XWGRRU PELHQW 7HPSHUDWXUH 96 3UHVVXUH 2XWGRRU 7HPSHUDWXUH 1RWH 7 QGRRU 7HPSHUDWXUH 2 7 2XWGRRU 7HPSHUDWXUH 5HPRYH UHIULJHUDQW LI WKH SUHVVXUH LV DERYH WKH FKDUW YD...

Page 15: ...umer 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 BY THE LIMITE...

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