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506469-01 Issue 1008 Page 1 of 24
The equipment covered in this manual is to be installed by trained and experienced service
and installation technicians. Improper installation, modification, service, or use can cause
electrical shock, fire, explosion, or other conditions which may cause personal injury, death,
or property damage. Use appropriate safety gear including safety glasses and gloves when
installing this equipment.
WARNING
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
TABLE OF CONTENTS
INSTALLATION ....................................................2
START-UP ..........................................................13
OPERATION ......................................................17
MAINTENANCE .................................................21
CONNECTION DIAGRAM..................................23
Risk of electrical shock. Disconnect all remote power
supplies before installing or servicing any portion of the
system. Failure to disconnect power supplies can result
in property damage, personal injury, or death.
WARNING
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service this
equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
WARNING
WARNING
Manufactured By
Allied Air Enterprises, Inc.
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*506469-01*
Save these instructions for future reference
INSTALLATION AND MAINTENANCE INSTRUCTIONS
4AC18LT SERIES
Split System Air Conditioner