Lennox 10ACC-060-230 User Manual

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ã 2002 Lennox Industries Inc.
Litho U.S.A.
Corp. 0201-L1
10ACC
Service Literature
10ACC SERIES UNITS
The 10ACC is a residential split-system condensing
unit available in sizes ranging from 1-1/2 to 5 tons. Con-
densing coil size, circuiting and air volume result in a
minimum SEER rating of 10.0. The series is designed
for use with an expansion valve or RFCIV system in the
indoor unit.
10ACC 1-1/2 to 3 ton units are equipped with reciprocating
compressors. All compressors are hermetically sealed for
long service life. The compressor is installed in the unit on re-
silient rubber mounts to assure quiet, vibration-free operation.
A built-in protection device assures protection from excessive
current and temperatures.
10ACC3-1/2to5ton units are equipped with scroll com-
pressors. The scroll operates likea standard compressorbut
it is unique in the way it compresses refrigerant.
WARNING
Refrigerant can be harmful if it is inhaled. Refriger-
ant must be used and recovered responsibly.
Failure to follow this warning may result in person-
al injury or death.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.
This manual is divided into sections which discuss the
major components, refrigerant system, charging proce-
dure, maintenance and operation sequence.
All specifications in this manual are subject to change.
IMPORTANT
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser-
vice must be performed by a qualified installer or
service agency.

Lennox 10ACC-060-230 Specifications

General

Brand	Lennox
Model	10ACC-060-230
Category	Heat Pump
Language	English

Summary

10ACC Series Unit Information

General Information

General Safety and Unit Overview

Overview of unit components and general safety precautions for the 10ACC series.

Unit Components

Control Box Components

Details compressor contactor, dual capacitor, start capacitor, and potential relay.

Scroll Compressor Details

Explains scroll compressor design, operation, and handling precautions.

Condenser Fan Motor

Describes the condenser fan motor, its requirements, and access for maintenance.

Refrigerant System

Plumbing and Line Sets

Specifies liquid and suction line sizes and types for various models.

Service Valves and Ports

Explains the function, operation, and safety for service valves and gauge ports.

Charging and Leak Testing

Pumping Down the System

Procedure for safely pumping down the refrigeration system before service.

Leak Testing Procedure

Steps for performing a leak test using nitrogen pressure before evacuation.

Evacuating the System

Detailed steps for evacuating the system to the required vacuum level.

Charging the System

Guidance on charging based on outdoor temperature and metering device.

Subcooling Charging Method

Method for charging fixed orifice systems at cooler outdoor temperatures.

Approach Charging Method

Method for charging TXV systems at warmer outdoor temperatures.

Maintenance Procedures

Coil and Unit Checks

Maintenance tasks for condenser/evaporator coils and indoor unit components.

Wiring and Operation Sequence

10ACC Operating Sequence

Details the sequence of operations for cooling demand and cessation.