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Table of Contents
- 1 Table of Contents
- 2 Safety Precautions
- 3 General Operating Instructions
- 4 General Product Information
- 5 Outdoor Unit Installation
- 6 Unit Wiring
- 7 Wiring Diagrams
- 8 Refrigerant Piping
- 9 Leak Test, Evacuation & Release of Refrigerant
- 10 Initial Start-Up & Checks
- 11 Field Charging
- 12 Final Inspection
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Related Manuals for Mars COMFORT-AIRE CMA12SD-0
Summary of Contents for Mars 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...
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Page 2: Table Of Contents
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 ..........................8 Wiring Diagrams ........................9-12 Refrigerant Piping ........................ -
Page 3: Safety Precautions
Owner’s Manual - CMA12-48SD SAFETY PRECAUTIONS 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. -
Page 4: General Operating Instructions
Owner’s Manual - CMA12-48SD OPERATING INSTRUCTIONS IMPORTANT Air conditioners are designed to provide comfort cooling at outside temperatures above 65°F Wait at least 3 minutes after turning your air (18°C) but less than 109°F (43°C). Operating the conditioner off before trying to restart it. This air conditioner outside of this temperature range gives the unit the time needed to stabilize may cause unit failure and will void the warranty. -
Page 5: General Product Information
Owner’s Manual - CMA12-48SD GENERAL PRODUCT INFORMATION UNPACKING AND INSPECTION: THERMOSTAT AND INDOOR The condensing unit is shipped completely FAN TIME DELAY: assembled and in it’s own package. All goods are All indoor units should include a fan time delay. inspected at the factory and released to the freight This may be accomplished by using a digital wall company in good condition. -
Page 6: Outdoor Unit Installation
Owner’s Manual - CMA12-48SD OUTDOOR UNIT INSTALLATION UNIT LOCATION AND MOUNTING: An awning can be built over the outdoor unit to prevent direct sunlight or rain exposure or snowfall. Choose a location that places the condensing Ensure that the awning is at least 2 ft. above the unit as close to the indoor unit as possible. - Page 7 Owner’s Manual - CMA12-48SD OUTDOOR UNIT INSTALLATION continued 1. Split type outdoor unit clearances Clearances Fig. 4 1. Ensure that there is sufficient clearance around the unit for installation and maintenance. Clearance must be maintained to ensure that the air inlets and outlets are not obstructed. [See Fig.
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Page 8: Unit Wiring
Owner’s Manual - CMA12-48SD UNIT WIRING Outdoor unit wiring connection ELECTRICAL WIRING AND SUPPLY VOLTAGE: 1. Remove the electrical control cover from the All electrical wiring must be done according to outdoor unit. NEC and local codes. Nameplate data indicates the operating voltage, phase, ampacity, maximum 2. -
Page 9: Wiring Diagrams
Owner’s Manual - CMA12-48SD Owner’s Manual - CMA12-48SD OUTDOOR UNIT WIRING CONNECTION continued *NOTE: Please refer to the installation instructions of the 24V thermostat used in conjunction with this unit for additional wiring instructions. - Page 10 Owner’s Manual - CMA12-48SD Owner’s Manual - CMA12-48SD OUTDOOR UNIT WIRING CONNECTION continued...
- Page 11 Owner’s Manual - CMA12-48SD Owner’s Manual - CMA12-48SD OUTDOOR UNIT WIRING CONNECTION continued...
- Page 12 Owner’s Manual - CMA12-48SD Owner’s Manual - CMA12-48SD OUTDOOR UNIT WIRING CONNECTION continued...
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Page 13: Refrigerant Piping
Owner’s Manual - CMA12-48SD REFRIGERANT PIPING LEAk TEST, The length of refrigerant lines and the number of bends determine the pressure drop which affects EVACUATION capacity and efficiency of the system and oil return to the compressor. The outdoor unit connections &... -
Page 14: Initial Start-Up & Checks
Owner’s Manual - CMA12-48SD INITIAL START-UP & CHECkS FINAL INSPECTION Operation of the unit is automatic and will provide cooling depending on the setting of the thermostat. Do a final visual inspection of the entire installation and complete any final details and clean up. IMPORTANT! All panels must be installed, main power turned Review Unit Operation with the homeowner/user. - Page 15 CONDITIONS FOR WARRANTY COVERAGE • Unit must be operated according to MARS/Heat Controller operating 5. MARS/Heat Controller will not be liable for damages if our performance instructions included with the unit and cannot have been subjected regarding warranty resolution is delayed by events beyond our control...
- Page 16 8/2020...
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