Carrier 48TC*D08 appendix Table of Contents, Safety Considerations

48TC*D08---D14 Nominal 7.5 to 12.5 Tons

With Puron® (R---410A) Refrigerant

Service and Maintenance Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1 UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . 2 SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 4 COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PURONR (R-410A) REFRIGERANT . . . . . . . . . . . . . . 8 COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . 10 CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . 16 SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . 17 PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . . 24 GAS HEATING SYSTEM . . . . . . . . . . . . . . . . . . . . . . 25 CONDENSER COIL SERVICE . . . . . . . . . . . . . . . . . . 35 PREMIERLINKt CONTROL . . . . . . . . . . . . . . . . . . . 36 RTU-MP CONTROL SYSTEM . . . . . . . . . . . . . . . . . . 44 ECONOMI$ER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . 57 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . 66 PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . . 69 START-UP, PREMIERLINK CONTROL . . . . . . . . . . 71 START-UP, RTU-MP CONTROL . . . . . . . . . . . . . . . . 71 OPERATING SEQUENCES . . . . . . . . . . . . . . . . . . . . . 75 FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . 85

APPENDIX I. MODEL NUMBER SIGNIFICANCE . 87 APPENDIX II. PHYSICAL DATA . . . . . . . . . . . . . . . . 88 APPENDIX III. FAN PERFORMANCE . . . . . . . . . . . 90 APPENDIX IV. WIRING DIAGRAM LIST . . . . . . . . 96

APPENDIX V. MOTORMASTER SENSOR LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

UNIT START-UP CHECKLIST . . . . . . . . . . . . . . . . . . 98

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untrained personnel can perform the basic maintenance functions of replacing filters. Trained service personnel should perform all other operations.

When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety-alert

symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.