JOHNSON CONTROLS
3
Form 160.78-O1
Issue date: 05/19/2021
Changeability of this document
In complying with Johnson Controls’ policy for con-
tinuous product improvement, the information con-
tained in this document is subject to change without
notice. Johnson Controls makes no commitment to
update or provide current information automatically
to the manual or product owner. Updated manuals, if
applicable, can be obtained by contacting the nearest
Johnson Controls Service office or accessing the John-
son Controls Knowledge Exchange website at https://
docs.johnsoncontrols.com/chillers/.
It is the responsibility of rigging, lifting, and operating/
service personnel to verify the applicability of these
documents to the equipment. If there is any question
regarding the applicability of these documents, rig-
ging, lifting, and operating/service personnel should
verify whether the equipment has been modified and
if current literature is available from the owner of the
equipment prior to performing any work on the chiller.
Associated literature
Manual description Form number
YMC2 Installation 160.78-N1
YMC2 Unit Reassembly 160.78-N2
YMC2 Centrifugal Chiller Long Term Storage 50.20-NM5
YMC2 Field Connections 160.78-PW1
YMC2 Unit Wiring and Field Control Modications 160.78-PW2
YMC2 Unit Renewal Parts 160.78-RP1
YMC2 OptiViewTM Contol Center Operation Manual 160.78-O2
OptiSpeedTM VSD Model HYP744 Renewal Parts 160.78-RP3
Affected pages Description
24 Replaced maintenance requirements table with maintenance inspections section.
Revision notes
Revisions made to this document are indicated in the following table. These revisions are to technical information,
and any other changes in spelling, grammar, or formatting are not included.
Conditioned based maintenance
Traditional chiller maintenance is based upon assumed
and generalized conditions. In lieu of the traditional
maintenance program, a Johnson Controls YORK
Conditioned Based Maintenance (CBM) program can
be substituted. This CBM service plan is built around
the specific needs for the chiller, operating conditions,
and annualized impact realized by the chiller. Your lo-
cal Johnson Controls Branch can propose a customized
Planned Service Agreement that leverages real time
and historical data, delivering performance reporting,
corrective actions required and data enabled guidance
for optimal operation and lifecycle assurance. The pro-
gram will include fault detection diagnostics, operation
code statistics, performance based algorithms and ad-
vance rules based rationale delivered by the Johnson
Controls Connected Equipment Portal.
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