AAON LN Series User Manual

LN Series
Chillers and Outdoor Mechanical Rooms
Installation, Operation,
& Maintenance
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 should be kept with
the unit.
Do not store gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
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 you 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.
Startup and service must be
performed by a Factory Trained
Service Technician.
WARNING
WARNING

AAON LN Series Specifications

General

Brand	AAON
Model	LN Series
Category	Chiller
Language	English

Summary

AAON LN Series Overview, Features, and Safety

General Safety Statement Definitions

Explains CAUTION, WARNING, and DANGER classifications used throughout the manual.

Electrical and Fire Hazards

Warns about electrical dangers, fire, explosion risks, and qualified installer requirements.

Qualified Installer and Gas Leak Response

Stresses technician qualifications and procedures for gas leak detection.

Installation and Setup Procedures

Chiller Placement and Mounting

Guidelines for unit location, required clearances, and mounting methods.

Startup and System Operation

Pre-Startup Checks and Safety

Essential checks and safety warnings before initial unit operation.

Compressor Operation and Cycling

Rules for compressor on/off times and crankcase heater operation.

Component Maintenance and Procedures

Suction Line Filter Service

Procedure for removing and replacing the refrigerant suction line filter.

Checking Liquid Sub-cooling

Method to measure and calculate liquid sub-cooling for system charge.

Refrigeration Circuit Values and Adjustments

Pump System Operation and Maintenance

Pump Introduction and Storage

Starting, Stopping, and General Care

Dual Pump Valve Operation and Isolation