EasyManua.ls Logo

AAON WHA-012 User Manual

AAON WHA-012
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-012 and is the answer not in the manual?

AAON WHA-012 Specifications

General IconGeneral
Model NumberWHA-012
CategoryHeat Pump
Phase1
RefrigerantR-410A
Cooling Capacity12000 BTU/hr
Width24 inches

Summary

Safety Precautions and Warnings

General Safety Precautions

Explains CAUTION/WARNING statements and general safety rules for operation.

Electrical and System-Specific Safety

Covers electrical hazards, unit handling, chemical use, and water freezing.

Unit Handling and Lifting Safety

Details safe lifting, handling, and installation practices.

General Information and Unit Receiving

WARNING: System Failure and Damage

Warns against improper practices leading to failure or voided warranty.

Receiving Unit Inspection Procedures

Details checking for shipping damage, packaging, and nameplate verification.

Installation Procedures

Airflow Impact on Coils and Compressor

Explains how reduced airflow affects cooling coils and compressor lubrication.

Unit Mounting and Duct Connection

Covers mounting requirements, duct connection, and sealing.

Condensate Drain Piping Requirements

Specifies p-trap installation, drain line pitch, and air breaks.

CAUTION: Drain Pan Protection

Emphasizes using drain pans to prevent water damage.

WSHP WH Series Clearances and Unit Orientation

Minimum Installation Clearances

Provides table for required front, back, air intake, and bottom clearances.

Blower Assembly and Access Procedures

Side Access Blower Assembly Removal

Step-by-step guide for removing the blower assembly from the side.

Lifting and Handling the Unit Safely

Guidelines for safely lifting and moving the unit.

Horizontal Unit Bottom Access

Details accessing components through the bottom panel.

Blower Motor, Heat Exchanger Piping, and Corrosion

Bottom Access Blower Assembly Removal

Step-by-step guide for removing the blower assembly from the bottom.

Blower Motor and Fan Access

Procedures for accessing and removing the blower motor and fan.

Refrigerant-to-Water Heat Exchanger Piping

Discusses water piping for the heat exchanger and corrosion warnings.

Open Loop Application Corrosion Risks

Warns about chemical corrosion in open loop systems and warranty exclusions.

Freezing Water in Heat Exchanger Hazard

Explains damage caused by freezing water and warranty exclusions.

Water Piping and Connections

Electrical Installation and Safety

Voltage Imbalance and Grounding

Warns about voltage imbalance effects and grounding requirements.

Connecting to WH Series Disconnect

Thermostat Control Wiring

Filter Installation and Duct Connection

Startup and Refrigerant Charge Adjustment

Refrigerant Charge Adjustment Procedures

Guides on checking and adjusting refrigerant charge for sub-cooling and superheat.

AAON WSHP Pioneer Silver Controller Operations and Alarms

Controller Alarms and Fault Codes

Lists alarm conditions, LED diagnostic codes, and automatic reset logic.

AAON WSHP Pioneer Silver Expansion Board

Additional Operational Sequences and Maintenance

Coil Cleaning and Filter Replacement

Appendix A - Heat Exchanger Corrosion Resistance

Startup Form and Maintenance Log

WH Series Startup Form Checklist

Lists pre-startup checks for installing contractors.

Related product manuals