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Carrier PAD324 - User Manual

Carrier PAD324
27 pages
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INSTALLATION INSTRUCTIONS
R--410A Single Package Electric Cooling
PAD324--60
1&3Phase
These instructions must be read and understood completely before attempting installation
Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and NOTE
The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels
of hazard seriousness. The signal word DANGER
is only used o n product labels to signify an
immediate hazard. The signal words WARNING,
CAUTION, and NOTE will be used on product
labels and throughout this manual and other
manual that may apply to the product.
DANGER -- Immediate hazards which will result in
severe personal injury or death.
WARNING --Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION -- Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE -- Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
!
WARNING
Signal Words in Manuals
The signal word WARNING is used throughout
this manual in the following manner:
The signal word CAUTION is used throughout
this manual in the following manner:
!
CAUTION
Signal Words on Product Labeling
Signal words are used in combination with
colors and/or pictures or product labels.
SAFETY CONSIDERATIONS 2.................
RECEIVING AND INSTALLATION 2.............
Step 1 -- Check Equipment 2...................
Step 2 -- Provide Unit Support 2.................
Step 3 -- Provide Clearances 3..................
Step 4 -- Field Fabricate Ductwork 3.............
Step 5 -- Rig and Place Unit 3...................
Step 6 -- Provide for Condensate Disposal 7......
Step 7 -- Install Duct Connections 7..............
Step 8 -- Install Electrical Connections 9..........
PRE--START--UP 11............................
START--UP 11.................................
Step 1 -- Check for Refrigerant Leaks 11..........
Step 2 -- Start--Up Cooling Section and Make Adj. 11
Indoor Airflow Adjustments 12...................
Cooling Sequence of Operations 13..............
Wiring Diagram 15.............................
Maintenance 22................................
T roubleshooting 25.............................
Start--Up Checklist 27...........................
TABLE OF CONTENTS
!
WARNING
PERSONAL INJURY, AND/OR PROPERTY
DAMAGE HAZARD
Failure to carefully read and follow this warning
could result in equipment malfunction, property
damage, personal injury and/or death.
Installation or repairs made by unqualified
persons could result in equipment malfunction,
property damage, personal injury and/or death.
The information contained in this manual is
intended for use by a qualified service technician
familiar with safety procedures and equipped
with proper tools and test instruments.
Installation must conform with local building
codes and with the national Electrical Code
NFPA70 current edition or Canadian Electrical
Code part 1 CSA C.22.1.
513 01 3103 00
04/21/10
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Carrier PAD324 Specifications

General IconGeneral
BrandCarrier
ModelPAD324
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Labeling and Signal Words

Signal Word Definitions

Defines DANGER, WARNING, CAUTION, and NOTE signal words for hazard communication.

Signal Word Usage

Explains how signal words are used in manuals and on product labels for hazard identification.

Safety Considerations

Electrical, Environmental, and Physical Hazards

Covers electrical shock, refrigerant pressure, environmental release, and sharp metal hazards.

Introduction and Unit Receiving

Unit Introduction

Brief overview of the PAD3 unit design and capabilities.

Equipment Inspection Procedures

Steps for checking unit identification and inspecting for shipping damage.

Installation Procedures

Unit Placement, Clearances, and Ductwork

Guidelines for unit placement, clearances, and ductwork fabrication.

Rigging and Lifting Safety

Safety precautions for rigging, lifting, and potential falling hazards.

Rigging Hazard Warnings

Critical warnings about unit falling hazards and property damage during rigging operations.

Unit Dimensions and Clearances

Dimensional Data and Corner Weights

Details dimensions, center of gravity, and corner weights for PAD3 2-3 Ton units.

Safety Clearance Requirements

Specifies minimum clearances for combustible materials and NEC requirements.

Unit Dimensions and Clearances (Continued)

Dimensional Data and Corner Weights

Details dimensions, center of gravity, and corner weights for PAD3 3.5-5 Ton units.

Safety Clearance Requirements

Specifies minimum clearances for combustible materials and NEC requirements.

Roof Curb Installation Procedures

Roof Curb Details and Unit Placement

Illustrates roof curb construction, dimensions, and unit placement guidelines.

Rigging and Condensate Disposal

Rigging Weights and Safety Notices

Provides rigging weights and important safety notices for riggers.

Condensate Management and Trap

Instructions for condensate disposal and a diagram of the condensate trap setup.

Duct Connection Procedures

Ductwork and Configuration

Electrical Safety Precautions

Emphasizes disconnecting power before servicing electrical components.

Downflow Discharge Configuration

Steps for converting unit for downflow discharge and duct opening details.

Electrical Connection Procedures

Electrical Safety and Component Protection

Warns of electrical hazards and potential unit damage from improper wiring.

High-Voltage and Control Wiring Details

Steps for high-voltage connections and control wiring guidelines.

Wiring Diagrams and 208-V Operation

Refers to diagrams for connections and outlines 208-V operation procedures.

System Components and Accessories

Transformer Protection and Overloads

Information on transformer protection and overload troubleshooting.

Accessory Electric Heater Installation

Guidance on installing accessory electric heaters.

Pre-Start-Up and Initial Checks

Critical Safety Warnings

Covers fire, explosion, and electrical shock hazards during pre-start-up procedures.

Refrigerant Leak Check and Charging

Procedures for checking, repairing, and charging the refrigerant system.

Cooling System Start-Up and Controls

Steps for starting the cooling section, verifying controls, and adjusting refrigerant charge.

Cooling System Adjustments

Airflow and Unit Operation Hazards

Discusses airflow recommendations and hazards of improper operation.

Fan Speed Configuration

Instructions for setting single or dual cooling fan speeds, including dehumidification.

Fan Control and Cooling Operation

Interface Fan Board and Color Coding

Diagram of IFB and color coding for indoor fan motor leads.

Fan Operation Modes and Sequence

Explains continuous fan operation and the cooling sequence of operation.

Performance Data Tables

Wiring Diagram (208;230-1-60)

Ladder Wiring Diagram (208;230-1-60)

Electrical Safety Warning

Critical warning to disconnect power before servicing to prevent injury or death.

Wiring Diagram (208;230-3-60)

Electrical Safety Warning

Critical warning to disconnect power before servicing to prevent injury or death.

Ladder Wiring Diagram (208;230-3-60)

Electrical Safety Warning

Critical warning to disconnect power before servicing to prevent injury or death.

Wiring Diagram (460-3-60)

Electrical Safety Warning

Critical warning to disconnect power before servicing to prevent injury or death.

Ladder Wiring Diagram (460-3-60)

Electrical Safety Warning

Critical warning to disconnect power before servicing to prevent injury or death.

Cooling Charging Chart and Procedure

Maintenance Procedures

General Maintenance Hazards

Warns of personal injury, unit damage, and electrical hazards during maintenance.

Component Maintenance Guidelines

Guidelines for maintaining air filters, blower motor, and indoor coil.

Component Maintenance and Inspection

Fan Blade, Coil, and Drain Pan Care

Procedures for fan blade positioning, coil cleaning, and drain pan inspection.

Electrical and Refrigerant Circuit Checks

Annual inspection of electrical controls, wiring, and refrigerant circuit for leaks.

System Safety and Component Information

R-410 A Refrigerant Hazards and Handling

Details R-410A safety, pressure, explosion risks, and handling precautions.

System Components and Controls Overview

Information on evaporator airflow, metering devices, pressure switches, and compressor.

Service Precautions and Guides

Roof Service and Refrigerant Handling Precautions

Precautions for working on roofs and handling R-410A refrigerant and components.

Troubleshooting and Start-Up References

Directs users to troubleshooting charts and start-up checklists.

R-410 A Quick Reference Guide

Key safety and servicing notes specific to R-410A air conditioners.

Troubleshooting Guide

Compressor and Fan Operational Issues

Troubleshooting steps for compressor and fan operational failures.

Pressure and Cycling Problem Diagnosis

Diagnosing problems related to head pressure, suction pressure, and compressor cycling.

Start-Up Checklist

Preliminary Information and Checks

Recording unit details and verifying pre-start-up conditions.

Electrical and Refrigerant Start-Up Verification

Checklist items for electrical supply, compressor/fan amps, and refrigerant pressures.

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