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characteristics (features) described in the product <br />OPERATION AND MAINTENANCE <br />INSTRUCTIONS section of this booklet. <br />VIII. SYSTEM CHECKOUT <br />Airxcel, Inc. manufactures a wide range of roof top <br />air conditioners which incorporate different product <br />operation features. To properly evaluate the <br />performance of a newly installed air conditioner, it is <br />necessary to review the specific unit operation <br />PIN: 1980-006, Rev 2 03-05-2020 <br />TABLE OF CONTENTS <br /> General Information 2 <br /> Air Conditioning Sizing 2 <br /> Selecting an Installation Location 2 <br /> Installing the Roof Top Unit 2 <br /> Electrical Wiring 4 <br />V I. Installing the Optional Heater <br />Accessory 5 <br />VI .I Installing Ceiling Assembly <br />(9400 Sanas) 5 <br />VIII. System Checkout 6 <br />These instructions are a general guide for installing the 48000 Series Coleman-Mach roof top Air Conditioners. For <br />specific air conditioner details, it will be necessary to refer to ALL printed documents supplied with this unit. <br />NOTE: The words 'Shall" or "Must" indicate a requirement which is essential to satisfactory and safe product <br />performance. The words "Should ° or May in-dicate a recommendation or advice which is not essential and not <br />required but which may be useful or helpful. <br />WARNING! - SHOCK HAZARD To prevent the possibility of severe personal injury or equipment damage <br />due to electrical shock, always be sure the electrical power source to the appliance is disconnected. <br />CAREFULLY FOLLOW ALL INSTRUCTIONS AND WARNINGS IN THIS BOOKLET TO AVOID DAMAGE TO <br />THE EQUIPMENT, PERSONAL INJURY OR FIRE, <br />WARNING! Improper installation may damage equipment, can create a hazard and will void the warranty. <br />The use of components not tested in accordance with these units will void the warranty, may make the <br />equipment in violation of state codes, may create a hazard and may ruin the equipment. <br />IX. Operation and Maintenance 6 <br />I. General Information 6 <br /> Control Panel 6 <br /> Operation 9 <br />. Maintenance 9 <br />V• Wall Thermostat Identification and <br />Operation 10 <br />vi. Warranty Service 10 <br />X. Serial Number Nomenclature 23 <br />XI. Optional Extended Warranty 24 <br />INSTALLATION, OPERATION AND <br />MAINTENANCE INSTRUCTIONS FOR <br />48000 SERIES AIR CONDITIONERS <br />i YRV Products Division <br />VAIRXCEL <br />CHUNG <br />ASSEMBLY — <br />CHUTE CHUTE <br />FILTERS — - - FABRIC DUCT <br />MATERIAL <br />CEILING <br />ASSEMBLY <br />SHROUD <br />ROOF TOP UNIT <br />MOUNTING FRAME —\ <br />ROOFTOP STRUCTURE <br />* <br />CONTROL <br />KNOBS <br />--GRILLES <br />DUCT COL LAN <br />Figure 9 <br />IMPORTANT NOTICE <br />These instructions are for the use of qualified individuals specially trained and experienced in installation of this <br />type equipment and related system components. -- <br />Installation and service personnel are required by some state's to be licensed. PERSONS NOT QUALIFIED <br />SHALL NOT INSTALL NOR SERVICE THIS EQUIPMENT.