Installation, Operation and Maintenance Manual Horizontal/Side Discharge Condensing Units Models: CMA1412SF-0 CMA1418SF-1 CMA1424SF-1 CMA1430SF-1 CMA1436SF-1 CMA1448SF-1 517.787.2100 • www.marsdelivers.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units: Installation, Operation and Maintenance TABLE OF CONTENTS Safety Precautions ................................................................................................................... 3 General Operating Instructions................................................................................................. 4 General Product Information .....................
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units 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. Contact an authorized service technician for repair, maintenance or installation of this unit.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units OPERATING INSTRUCTIONS IMPORTANT Air conditioners are designed to provide comfort cooling at outside temperatures above 65°F (18°C) but less than 109°F (43°C). Operating the air conditioner outside of this temperature range may cause unit failure and will void the warranty. If you have need for cooling at lower outdoor temperatures a “low ambient cooling” device can be field installed.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units GENERAL PRODUCT INFORMATION UNPACKING AND INSPECTION: THERMOSTAT AND INDOOR FAN TIME DELAY: The condensing unit is shipped completely assembled and in it’s own package. All goods are inspected at the factory and released to the freight company in good condition. When received at the site, a visual inspection of all packages should be made immediately.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units OUTDOOR UNIT INSTALLATION UNIT LOCATION AND MOUNTING: Choose a location that places the condensing unit as close to the indoor unit as possible. The maximum unit separation and vertical lift (compressor above evaporator) must be taken into account [See Fig 1]. Do not exceed allowable pipe lengths. Fig. 1 An awning can be built over the outdoor unit to prevent direct sunlight or rain exposure or snowfall.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units OUTDOOR UNIT INSTALLATION continued 1. Split type outdoor unit clearances Clearances Fig. 4 LQFK 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. 4].
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units UNIT WIRING Outdoor unit wiring connection ELECTRICAL WIRING AND SUPPLY VOLTAGE: 1. Remove the electrical control cover from the outdoor unit. All electrical wiring must be done according to NEC and local codes. Nameplate data indicates the operating voltage, phase, ampacity, maximum over current protection, and minimum voltage. 2.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units OUTDOOR UNIT WIRING CONNECTION TERMINAL bLOCk OF OUTDOOR UNIT 12K TERMINAL bLOCk OF OUTDOOR UNIT 18K-30K&48K TERMINAL bLOCk OF OUTDOOR UNIT 36K *NOTE1: Please refer to the installation instructions of the 24V thermostat used in conjunction with this unit for additional wiring instructions.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units OUTDOOR UNIT WIRING CONNECTION 12K 18K *NOTE: For reference only, the actual wiring diagram shall prevail : 10 10 continued
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units 24K & 30K 36K * NOTE: For reference only, the actual wiring diagram shall prevail 11 11
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units 48K * NOTE: For reference only, the actual wiring diagram shall prevail 12 12
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units REFRIGERANT PIPING LEAk TEST, EVACUATION & RELEASE OF REFRIGERANT The length of refrigerant lines and the number of bends determine the pressure drop which affects capacity and efficiency of the system and oil return to the compressor. Tube size should always be the same diameter as the connections provided at the service valves.
IOM - Horizontal/Side Discharge Condensing Units Horizontal/Side Discharge Condensing Units 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 on and the thermostat properly connected before operating the unit.
LIMITED EXPRESS WARRANTY ‘CMA’ SERIES HORIZONTAL/SIDE DISCHARGE CONDENSERS Congratulations on purchasing your new HVAC equipment. It’s been designed for long life and reliable service, and is backed by one of the strongest warranties in the industry. Your unit automatically qualifies for the warranty coverage listed below, providing you keep your proof of purchase (receipt) for the equipment and meet the warranty conditions.
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