AAON RZ Series User Manual

RZ SERIES
(45-240 tons)
Packaged Rooftop Units & Outdoor Air Handling Units
Installation, Operation,
& Maintenance
o Do not store gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
o WHAT TO DO IF YOU SMELL GAS
 Do not try to light any appliance.

Do not touch any electrical switch; do not
use any phone in your building.
 Leave the building immediately.

Immediately call your gas supplier from a
phone remote from the building. Follow the
gas supplier’s instructions.

If you cannot reach your gas supplier, call
the fire department.
o Startup and service must be performed by a
Factory Trained Service Technician.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious
injury, death or property damage.
Be sure to read and understand
the installation, operation and
service instructions in this manual.
Improper installation, adjustment,
alteration, service or maintenance
can cause serious injury, death or
property damage.
A copy of this IOM must be kept
with the unit.
WARNING

AAON RZ Series Specifications

General

Brand	AAON
Model	RZ Series
Category	Air Handlers
Language	English

Summary

Safety Information

Electrical Hazard Warnings

Details electrical shock, arc flash, and other electrical dangers and precautions.

Fire, Explosion, and Gas Safety

Warning about fire, explosion, and carbon monoxide hazards from gas.

Mechanical and Handling Safety

Precautions for unit handling, rotating parts, water pressure, and freezing.

Unit Installation

Locating, Curb, and Mounting

Guidance on unit placement, curb installation, and mounting dimensions.

Lifting, Rigging, and Connections

Procedures for safely lifting, rigging, and connecting unit sections.

Electrical and System Connections

Instructions for making electrical connections and ensuring proper power supply.

Unit Configuration and Features

Feature String Nomenclature

Detailed explanation of the RZ Series feature string nomenclature for unit configuration.

Heating and Cooling Coil Options

Specifications for hot water, steam, and chilled water coil connections.

Energy Recovery Unit Features

Information on aluminum and polymer energy recovery wheels.

Unit Operation

Cooling and Heating Modes

Details on operating the unit in various cooling and heating modes.

Evaporative Condenser Operation

Operation of the evaporative condenser system, including water management.

Unit Maintenance and Service

Filter Maintenance and Replacement

Procedures for inspecting, replacing, and sizing air filters.

General Maintenance Tasks

Routine maintenance for fans, motors, and water systems.

Coil Cleaning Procedures

Step-by-step guide for cleaning various types of coils.

Startup and System Checks

Refrigerant Charge Adjustment

Procedures for checking and adjusting refrigerant sub-cooling and superheat.

Phase and Brownout Protection Module

Setup and configuration of the Digital Phase Monitor (DPM) module.

Startup Checklist and Procedures

Checklist and forms for unit startup and performance data recording.