Payne PH3Z024 User Manual

Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS ......................... 2
INTRODUCTION ................................... 2
RECEIVING AND INSTALLATION .................. 2-7
Check Equipment .................................. 2
Identify Unit .................................... 2
Inspect Shipment ................................. 2
Provide Unit Support ............................... 2
Slab Mount ..................................... 2
Ground Mount .................................. 2
Provide Clearances ................................. 2
Place Unit ........................................ 2
Select and Install Ductwork ........................... 2
Configuring Units for Downflow (Vertical) Discharge .... 3
Connect Condensate Drain ........................... 3
Install Electrical Connections ......................... 6
High-Voltage Connections ......................... 6
Routing Power Leads Into Unit ...................... 6
Connecting Ground Lead to Unit Ground .............. 6
Routing Control Power Wires ...................... 6
Accessory Electric Heat Wiring ...................... 6
PRE-START-UP .................................... 7
START-UP ...................................... 8-17
Check for Refrigerant Leaks .......................... 8
Start-Up Cooling and Make Adjustments ................ 8
Checking Cooling and Heating Control Operation ....... 8
Refrigerant Charge ................................. 8
No Charge ...................................... 8
Low Charge Cooling .............................. 8
Heating Mode Charge ............................. 8
Indoor Airflow and Airflow Adjustments ................ 9
Unit Controls ..................................... 9
High-Pressure Relief Valve ......................... 9
Loss-of-Charge Switch ........................... 9
Compressor Overload ............................ 10
Compressor Rotation ............................... 10
Sequence of Operation ............................. 10
Fan Operation .................................. 10
A05194
Fig. 1 - Unit PH3Z
Cooling Operation ............................ 10, 17
Heating Operation ............................... 17
Continuous Fan ................................. 17
Defrost ....................................... 17
Electric Resistance Heating ........................ 17
MAINTENANCE ................................ 17-20
Air Filter ........................................ 18
Unit Top Removal ................................. 18
Indoor Blower and Motor ........................... 18
Outdoor Coil, Indoor Coil, and Condensate Drain Pan ..... 19
Outdoor Fan ..................................... 19
Electrical Controls and Wiring ....................... 19
Refrigerant Circuit ................................. 20
Indoor Airflow ................................... 20
Metering Devices ................................. 20
Liquid Line Strainers ............................... 20
High Flow Valves ................................. 20
TROUBLESHOOTING .............................. 20
START-UP CHECKLIST ............................ 20

Payne PH3Z024 Specifications

General

SEER	Up to 16
Refrigerant	R-410A
Voltage (V)	208/230
Phase	1
Cooling Capacity (BTU)	24000
Sound Level (dB)	72

Summary

Safety Considerations

Introduction

Receiving and Installation

Check Equipment

Verify unit model and serial number against shipping papers and inspect for damage.

Provide Unit Support

Ensure proper unit placement on a level pad or ground for correct drainage.

Provide Clearances

Maintain adequate ventilation and outdoor air by ensuring proper clearances around the unit.

Select and Install Ductwork

Design and install duct systems per NFPA standards and ASHRAE recommendations.

Pre-Start-Up Procedures

Start-Up Procedures

Check for Refrigerant Leaks

Locate and repair refrigerant leaks, recover system, and recharge as needed.

Start-Up Cooling and Make Adjustments

Perform cooling start-up procedures, do not jumper safety devices.

Refrigerant Charge

Charge the system according to unit nameplate and Table 1 for proper operation.

Unit Controls

Understand internal protection controls like high-pressure relief valve and compressor overload.

Compressor Rotation

Ensure compressor is rotating in the proper direction for correct operation and noise level.

Sequence of Operation

Details fan, cooling, heating, continuous fan, defrost, and electric resistance heating operations.

Maintenance Procedures

Air Filter Maintenance

Inspect air filters monthly and replace or clean as needed.

Unit Top Removal

Procedure for removing the unit top for maintenance and service access.

Troubleshooting Guide

Start-Up Checklist