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Literature Change History
YC-IOM-12 (October 2001)
First issue of manual; provides Installation, Operation, and
Maintenance instructions for 12-1/2 through 25 Ton pack-
aged gas/electric units.
Overview of Manual
Note: One copy of this document ships inside the
control panel of each unit and is customer property.
It must be retained by the unit’s maintenance
personnel.
This booklet describes proper installation, operation, and
maintenance procedures for air cooled systems. By carefully
reviewing the information within this manual and following
the instructions, the risk of improper operation and/or compo-
nent damage will be minimized.
It is important that periodic maintenance be performed to
help assure trouble free operation. A maintenance schedule
is provided at the end of this manual. Should equipment fail-
ure occur, contact a qualified service organization with quali-
fied, experienced HVAC technicians to properly diagnose
and repair this equipment.
Note: Do Not release refrigerant to the atmosphere!
If adding or removing refrigerant is required, the
service technician must comply with all federal,
state, and local laws.
General Information
Model Number Description
All products are identified by a multiple-character model
number that precisely identifies a particular type of unit. An
explanation of the alphanumeric identification code is pro-
vided below. Its use will enable the owner/operator, installing
contractors, and service engineers to define the operation,
specific components, and other options for any specific unit.
When ordering replacement parts or requesting service, be
sure to refer to the specific model number and serial number
printed on the unit nameplate.
