Safety Considerations; Introduction; Receiving And Installation; Check Equipment - Payne PA3Z Installation Manual

Electrical Controls and Wiring...............................................................................................................................................................................19
Refrigerant Circuit ..................................................................................................................................................................................................19
Indoor Airflow ........................................................................................................................................................................................................20
Metering Devices ....................................................................................................................................................................................................20
Lubrication ..............................................................................................................................................................................................................20
Liquid Line Strainer................................................................................................................................................................................................20
High Flow Valves...................................................................................................................................................................................................20
TROUBLESHOOTING ...............................................................................................................................................................................................20
START-UP CHECKLIST............................................................................................................................................................................................20
NOTE TO INSTALLER—Before installation, READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY. Also, make sure the
User's Manual and Replacement Guide are left with the unit after installation.
Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and
qualified workers should install, repair, or service air-conditioning equipment.
Untrained workers can perform basic maintenance functions of cleaning coils and filters. All other operations should be performed by trained
service people. When working on air-conditioning equipment, pay attention to 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 extinguisher available for
all brazing operations.
WARNING: FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death and/or property damage.
Before performing service or maintenance operations on system, turn off main power to unit and install lockout tag. Turn off
accessory heater power switch if applicable.
Recognize safety information. This is the safety-alert symbol
for personal injury.
Understand the signal words DANGER, WARNING, CAUTION, and NOTE. 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.
These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions
exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require
these instructions as a minimum for a safe installation.
PA3Z cooling units are fully self-contained and designed for outdoor installation (See Fig. 1). As shown in Fig. 2, units are shipped in a
horizontal-discharge configuration for installation on a ground-level slab. All units can be field-converted to downflow discharge configurations
for rooftop applications with a field-supplied plenum.
PROCEDURE 1—CHECK EQUIPMENT
A. IDENTIFY UNIT
The unit model number and serial number are stamped on the unit identification plate. Check this information against shipping papers. Verify that
unit voltage and amperage listed on unit rating plate agree with power supplied for equipment.
Fig. 1—Unit PA3Z

SAFETY CONSIDERATIONS

. When you see this symbol in instructions or manuals, be alert to the potential

INTRODUCTION

RECEIVING AND INSTALLATION

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