EasyManua.ls Logo

AAON WHA-042 User Manual

AAON WHA-042
60 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
WH Series
Horizontal Water-Source Heat Pump Unit
Installation, Operation
& Maintenance
If the information in this manual is not
followed exactly, a fire may result
causing property damage, personal
injury, or loss of life.
WARNING
QUALIFIED INSTALLER
Improper
installation, adjustment,
alteration, service,
or maintenance
can cause property damage,
personal injury or loss of life. Startup
and service must be performed by a
Factory Trained Service Technician.
Keep a copy of this IOM with the unit.
WARNING

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the AAON WHA-042 and is the answer not in the manual?

AAON WHA-042 Specifications

General IconGeneral
BrandAAON
ModelWHA-042
CategoryHeat Pump
LanguageEnglish

Summary

AAON WH Series Features and Options Introduction

Key Features Overview

Highlights key features like energy efficiency, IAQ, humidity control, and system integration.

Installation and Maintenance Features

Covers features facilitating installation and maintenance, like easy access and clear wiring.

Safety

General Safety Statements

Explains the meaning of NOTE, CAUTION, and WARNING statements.

Operational Safety Cautions

Cautions regarding component rotation, fan motor operation, and chemical use.

Handling and Electrical Hazards

Covers warnings on unit handling, electrical shock, fire hazards, and chemical risks.

System Integrity Safety Warnings

Addresses warnings about grounding, rotating parts, water freezing, and water pressure.

General Information

Unit Purpose and Design

Describes the purpose and design of AAON WH Series WSHP units for indoor installation.

Codes and Ordinance Compliance

Details compliance with ETL, UL, CSA, ASHRAE, ICC, IMC, IBC, NFPA standards.

Unit Receiving and Preparation

Receiving and Inspecting the Unit

Instructions for checking the unit for shipping damage and verifying model/voltage.

Proper Storage Guidelines

Recommendations for storing the unit in a dry, protected area before installation.

Direct Expansion (DX) System Overview

Overview of factory-assembled DX systems including components and control instructions.

Installation Procedures

Unit Mounting and Location

Guidance on selecting unit location, mounting, and ensuring proper support.

Condensate Drain Piping

Details on installing p-traps and drain lines for condensate removal, including pitch and air breaks.

Electrical Connections

Power Supply and Wiring Requirements

Verifying unit nameplate, single point connections, and wiring requirements.

Voltage and Imbalance Considerations

Importance of correct voltage, maximum allowable imbalance, and checking connections.

Startup Procedures

Operation Limits and Pre-Startup Checks

Specifies operating limits and essential checks before unit startup.

Fan Air Flow Adjustment

Instructions for adjusting supply fan speed using motor taps or voltage signals.

Refrigerant Charge Adjustment

Guidelines for adjusting refrigerant charge based on sub-cooling and superheat.

Unit Operation

Pioneer Silver Controller Overview

Description of the Pioneer Silver Controller, its functions, and input/output terminals.

Controller Terminal Block Functions

Details on terminal blocks (H5, H1, H3, H6) and their functions for thermostat and sensors.

Controller Layout and Sequences of Operation

Explains the controller layout, relay status LEDs, and sequences for fan and compressor operation.

Alarm and Fault Code Management

Information on LED status, fault codes, and how the controller handles alarms.

Maintenance and Cleaning

Routine Maintenance Schedule

Recommendations for annual service checks by technicians and monthly inspections.

Supply Fan and Microchannel Coil Cleaning

Procedures for cleaning supply fans and microchannel coils using approved chemicals.

Filter Replacement Guidelines

Importance of monthly filter inspection and replacement for unit efficiency.

Appendices and Filter Information

Replacement Parts and Warranty Contact

How to obtain replacement parts and contact AAON for service and warranty.

Filter Specifications by Cabinet Type

Tables detailing filter sizes, quantities, and types for different cabinet models.

Heat Exchanger Corrosion Resistance

Information on chemical compatibility and resistance of copper and cupro-nickel heat exchangers.

Related product manuals